parts of an lcd touch screen manufacturer

Important technical improvements of LCD, such as LED backlighting and wide viewing Angle, are directly related to LCD. And account for an LCD display 80% of the cost of the LCD panel, enough to show that the LCD panel is the core part of the entire display, the quality of the LCD panel, can be said to directly determine the quality of an LCD display.

The production of civil LCD displays is just an assembly process. The LCD panel, the main control circuit, shell, and other parts of the main assembly, basically will not have too complex technical problems.

Does this mean that LCDS are low-tech products? In fact, it is not. The production and manufacturing process of the LCD panels is very complicated, requiring at least 300 process processes. The whole process needs to be carried out in a dust-free environment and with precise technology.

The general structure of the LCD panel is not very complex, now the structure of the LCD panel is divided into two parts: the LCD panel and the backlight system.

Due to the LCD does not shine, so you need to use another light source to illuminate, the function of the backlight system is to this, but currently used CCFL lamp or LED backlight, don’t have the characteristics of the surface light source, so you need to guide plate, spreadsheet components, such as linear or point sources of light evenly across the surface, in order to make the entire LCD panel on the differences of luminous intensity is the same, but it is very difficult, to achieve the ideal state can be to try to reduce brightness non-uniformity, the backlight system has a lot to the test of design and workmanship.

In addition, there is a driving IC and printed circuit board beside the LCD panel, which is mainly used to control the rotation of LCD molecules in the LCD panel and the transmission of display signals. The LCD plate is thin and translucent without electricity. It is roughly shaped like a sandwich, with an LCD sandwiched between a layer of TFT glass and a layer of colored filters.

LCD with light refraction properties of solid crystals, with fluid flow characteristics at the same time, under the drive of the electrode, can be arranged in a way that, in accordance with the master want to control the strength of the light through, and then on the color filter, through the red, green, blue three colors of each pixel toning, eventually get the full-screen image.

According to the functional division, the LCD panel can be divided into the LCD panel and the backlight system. However, to produce an LCD panel, it needs to go through three complicated processes, namely, the manufacturing process of the front segment Array,the manufacturing process of the middle segment Cell, and the assembly of the rear segment module. Today we will be here, for you in detail to introduce the production of the LCD panel manufacturing process.

The manufacturing process of the LCD panel Array is mainly composed of four parts: film, yellow light, etch and peel film. If we just look at it in this way, many netizens do not understand the specific meaning of these four steps and why they do so.

First of all, the motion and arrangement of LCD molecules need electrons to drive them. Therefore, on the TFT glass, the carrier of LCD, there must be conductive parts to control the motion of LCD. In this case, we use ITO (Indium Tin Oxide) to do this.ITO is transparent and also acts as a thin-film conductive crystal so that it doesn’t block the backlight.

The different arrangement of LCD molecules and the rapid motion change can ensure that each pixel displays the corresponding color accurately and the image changes accurately and quickly, which requires the precision of LCD molecule control.ITO film needs special treatment, just like printing the circuit on the PCB board, drawing the conductive circuit on the whole LCD board.

First, the ITO film layer needs to be deposited on the TFT glass, so that there is a smooth and uniform ITO film on the whole TFT glass. Then, using ionized water, the ITO glass is cleaned and ready for the next step.

Next, a photoresist is applied to the glass on which ITO film is deposited, and a uniform photoresist layer is formed on the ITO glass. After baking for a period of time, the solvent of the photoresist was partially volatilized to increase the adhesion of the photoresist material to the ITO glass.

Ultraviolet light (UV) is used to illuminate the surface of the photoresist through a pre-made electrode pattern mask, which causes the photoresist layer to react. The photoresist is selectively exposed under ultraviolet light by covering the photoresist on the glass coated with the photoresist.

The exposed part of the photoresist is then washed away with the developer, leaving only the unexposed part, and the dissolved photoresist is then washed away with deionized water.

Then etch off the ITO film without photoresist covering with appropriate acid etching solution, and only retain the ITO film under the photoresist. ITO glass is conductive glass (In2O3 and SnO2). The ITO film not covered by photoresist is easy to react with acid, while the ITO film covered by photoresist can be retained to obtain the corresponding wire electrode.

Stripping: High concentration of alkali solution (NaOH solution) is used as a stripping solution to peel off the remaining photoresist on the glass so that ITO glass can form ITO graphics exactly consistent with the photolithography mask.

Rinse the basic label of glass with an organic solution and remove the photolithographic tape after reaction to keep the glass clean. This completes the first thin-film conductive crystal process, which generally requires at least five identical processes to form a complex and sophisticated pattern of electrodes on the glass.

This completes the previous Array process. It is not difficult to see from the whole process that ITO film is deposited, photoresist coated, exposed, developed, and etched on TFT glass, and finally, ITO electrode pattern designed in the early stage is formed on TFT glass to control the movement of LCD molecules on the glass. The general steps of the whole production process are not complicated, but the technical details and precautions are very complicated, so we will not introduce them here. Interested friends can consult relevant materials by themselves.

The glass that the LCD board uses makes a craft also very exquisite. (The manufacturing process flow of the LCD display screen)At present, the world’s largest LCD panel glass, mainly by the United States Corning, Japan Asahi glass manufacturers, located in the upstream of the production of LCD panel, these manufacturers have mastered the glass production technology patents. A few months ago, the earthquake caused a corning glass furnace shutdown incident, which has caused a certain impact on the LCD panel industry, you can see its position in the industry.

As mentioned earlier, the LCD panel is structured like a sandwich, with an LCD sandwiched between the lower TFT glass and the upper color filter. The terminal Cell process in LCD panel manufacturing involves the TFT glass being glued to the top and bottom of a colored filter, but this is not a simple bonding process that requires a lot of technical detail.

As you can see from the figure above, the glass is divided into 6 pieces of the same size. In other words, the LCD made from this glass is finally cut into 6 pieces, and the size of each piece is the final size. When the glass is cast, the specifications and sizes of each glass have been designed in advance.

Then, the organic polymer directional material is coated on the surface of the glass, that is, a uniform directional layer is applied to the appropriate position of ITO glass by the method of selective coating. Meanwhile, the directional layer is cured.

Directional friction:Flannelette material is used to rub the surface of the layer in a specific direction so that the LCD molecules can be arranged along the friction direction of the aligned layer in the future to ensure the consistency of the arrangement of LCD molecules. After the alignment friction, there will be some contaminants such as flannelette thread, which need to be washed away through a special cleaning process.

After the TFT glass substrate is cleaned, a sealant coating is applied to allow the TFT glass substrate to be bonded to the color filter and to prevent LCD outflow.

Finally, the conductive adhesive is applied to the frame in the bonding direction of the glass of the color filter to ensure that external electrons can flow into the LCD layer. Then, according to the bonding mark on the TFT glass substrate and the color filter, two pieces of glass are bonded together, and the bonding material is solidified at high temperatures to make the upper and lower glasses fit statically.

Color filters are very important components of LCD panels. Manufacturers of color filters, like glass substrate manufacturers, are upstream of LCD panel manufacturers. Their oversupply or undersupply can directly affect the production schedule of LCD panels and indirectly affect the end market.

As can be seen from the above figure, each LCD panel is left with two edges after cutting. What is it used for? You can find the answer in the later module process

Finally, a polarizer is placed on both sides of each LCD substrate, with the horizontal polarizer facing outwards and the vertical polarizer facing inwards.

A polarizer is an optical plate that allows only light from a certain direction to pass through. It is an optical element that converts natural light into straight polarized light. The mechanism of action is to make the vertical direction light pass through the straight incident light after passing through the vertical polarizer, and the other horizontal direction light is absorbed, or use reflection and scattering and other effects to make its shade.

When making LCD panel, must up and down each use one, and presents the alternating direction, when has the electric field and does not have the electric field, causes the light to produce the phase difference and to present the light and dark state, uses in the display subtitle or the pattern.

The rear Module manufacturing process is mainly the integration of the drive IC pressing of the LCD substrate and the printed circuit board. This part can transmit the display signal received from the main control circuit to the drive IC to drive the LCD molecules to rotate and display the image. In addition, the backlight part will be integrated with the LCD substrate at this stage, and the complete LCD panel is completed.

Firstly, the heteroconductive adhesive is pressed on the two edges, which allows external electrons to enter the LCD substrate layer and acts as a bridge for electronic transmission

Next is the drive IC press. The main function of the drive IC is to output the required voltage to each pixel and control the degree of torsion of the LCD molecules. The drive IC is divided into two types. The source drive IC located in the X-axis is responsible for the input of data. It is characterized by high frequency and has an image function. The gate drive IC located in the Y-axis is responsible for the degree and speed of torsion of LCD molecules, which directly affects the response time of the LCD display. However, there are already many LCD panels that only have driving IC in the X-axis direction, perhaps because the Y-axis drive IC function has been integrated and simplified.

The press of the flexible circuit board can transmit data signals and act as the bridge between the external printed circuit and LCD. It can be bent and thus becomes a flexible or flexible circuit board

The manufacturing process of the LCD substrate still has a lot of details and matters needing attention, for example, rinse with clean, dry, dry, dry, ultrasonic cleaning, exposure, development and so on and so on, all have very strict technical details and requirements, so as to produce qualified eyes panel, interested friends can consult relevant technical information by a search engine.

LCD (LC) is a kind of LCD, which has the properties of light transmission and refraction of solid Crystal, as well as the flow property of Liquid. It is because of this property that it will be applied to the display field.

However, LCD does not emit light autonomously, so the display equipment using LCD as the display medium needs to be equipped with another backlight system.

First, a backplate is needed as the carrier of the light source. The common light source for LCD display equipment is CCFL cold cathode backlight, but it has started to switch to an LED backlight, but either one needs a backplate as the carrier.

CCFL backlight has been with LCD for a long time. Compared with LED backlight, CCFL backlight has many defects. However, it has gradually evolved to save 50% of the lamp and enhance the transmittance of the LCD panel, so as to achieve the purpose of energy-saving.

With the rapid development of LED in the field of lighting, the cost has been greatly reduced.LCD panels have also started to use LED as the backlight on a large scale. Currently, in order to control costs, an LED backlight is placed on the side rather than on the backplate, which can reduce the number of LED grains.

However, no matter CCFL backlight or LED backlight is placed in various ways, the nature of the backlight source cannot be a surface light source, but a linear light source or point light source. Therefore, other components are needed to evenly distribute the light to the whole surface. This task is accomplished by the diffuser plate and diffuser plate.

On the transparent diffuser plate, point-like printing can block part of the light. The LED backlight on the side drives the light from the side of the diffuser plate, and the light reflects and refracts back and forth in the diffuser plate, distributing the light evenly to the whole surface. Point-like printing blocks part of the light, screening the light evenly like a sieve.

At the top of the diffusion plate, there will be 3~4 diffuser pieces, constantly uniform light to the whole surface, improve the uniformity of light, which is directly related to the LCD panel display effect. Professional LCD in order to better control the brightness uniformity of the screen, panel procurement, the later backlight control circuit, will make great efforts to ensure the quality of the panel.

The backlight system also includes a backlight module laminator, located behind the backplane. In the CCFL backlight era, you can often see the long strip laminator like the one above, with each coil responsible for a set of tubes.

However, it is much simpler to use a side white LED as a backlight. The small circuit board on the far left of the figure above is the backlight of the LED.

This is the general structure of the backlight system. Since I have never seen the backlight mode of R.G.B LED, I cannot tell you what the backlight mode is like. I will share it with you when I see it in the future.

Since the LCD substrate and the backlight system are not fixed by bonding, a metal or rubber frame is needed to be added to the outer layer to fix the LCD substrate and the backlight system.

After the period of the Module, the process is completed in LCM (LCDModule) factory, the core of this part of the basic does not involve the use of LCD manufacturing technology, mainly is some assembly work, so some machine panel factories such as chi mei, Korea department such as Samsung panel factory, all set with LCM factories in mainland China, Duan Mo group after the LCD panel assembly, so that we can convenient mainland area each big monitor procurement contract with LCD TV manufacturers, can reduce the human in the whole manufacturing and transportation costs.

However, neither Taiwan nor Korea has any intention to set up factories in mainland China for the LCD panel front and middle manufacturing process involving core technologies. Therefore, there is still a long way to go for China to have its own LCD panel industry.

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Crystal Display Systems (CDS) is one of the world’s leading display technology partners and a European market leader in industrial TFT LCD display solutions with the widest range of LCD TFT Display Components, touchscreens, and accessories in the market.  The CDS range is designed for and focused on industrial applications with the highest quality and reliability.  The range covers many areas and product technologies as you can see below which with CDS’s extensive distribution portfolio of all of the leading global manufacturers, CDS can efficiently serve almost all customer requirements.

CDS with its huge range of display panel technologies and TFT LCD Display components including TFT, LCD. Electroluminescent, LED and OLED) suitable for most applications. Each of the technologies CDS offers give excellent but differing benefits and performance optimised for many different end applications. The CDS technical engineering teams can guide its customers with the decisions as to which display technology best suits the customer’s application.  This could include many aspects including wide temperature range, ruggedisation, sunlight readability, touchscreen choice, fast response time, interface solutions, or even low power operation.

The wide display and related product options enables CDS us to create a platform for modern and innovative application designs and sustainably which are oriented towards industrial applications.  It is critical for CDS to work towards the perfect implementation of visual communication utilising its displays between man and machine to result in the optimum display solution.  CDS’s professional services such as long-term availability, spares and repairs service and lifecycle management to help ensure the long-term availability of the display panels and display kits.

TFT LCDs are the definitive and most popular TFT LCD Display components for professional applications now but as highlighted CDS offers a full toolbox of Display technologies including high brightness displays, ultra-wide stretched TFT LCDS, touchscreens, monitors and touch monitors as well as those more specialist EL technologies for Military, aerospace and other industrial applications. CDS customers benefit regularly from our special offers, flexible conditions, a small focused technical team and an exceptional scope of service resulting in the best display product for the right industrial application.

The above can include many factors including screen size, factors such as design of panel, 6bit or 8 bit displays, MiPi, RGB or HDMI interface, viewing angle and required brightness and contrast which are some of the most important aspects when choosing an ideal display in the industrial sector. So, whether you are looking for slimmer versions or standard sizes of TFT, need TN, MVA or IPS technologies, for outdoor or indoor use etc. Crystal Display Systems has a solutions for you.

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Usually, touch screens and LCD displays are produced separately and glued together with air bonding technology. So, there will be an air gap between touch screen and LCD display.

Air bonding is a simpler manufacturing technology with a high yield rate. Double-sided adhesive fixes touch screen and display panel around perimeter. However, there is an air gap between display panel and touch screen, which makes the whole display thicker. Reflected light and dust in air gap make screens less clear, too.

Optical bonding on the other hand, is to glue touch panel onto LCD screen with optical adhesive. Full-fit technology eliminates the air gap between layers. Less reflected light means better display. However, Optical bonding is an expensive technology. Now only a small number of customers with special needs choose this type of touch screen. As more and more end-users demand better LCD display, optical LCD touch screen will become mainstream.

In-Cell refers to embedding touch panel function into liquid crystal pixels, that is, embedding touch sensor function inside LCD screen. Traditional touch panel is no longer necessary. In-cell is an innovation of loading circuits onto liquid crystal. This kind of LCD is much thinner with better readability in sunlight.

On-Cell means embedding touch screen between color filter substrate and polarizer, in other words, equipping sensor on LCD panel. Although manufacture of on-cell screens is easier than In-Cell, there are still thickness and color uneven problems.

OGS technology is to fit touch screen and protective glass together. Inside of protective glass is ITO conductive layer. Coating and lithography are done directly on the glass. This makes touch screen thinner and cheaper. However, protective glass is usually tempered first, then coated, etched, and finally cut. Cutting tempered glass is difficult with low yield rate. Capillary cracks on the edge will weaken the cut glass.

If you have any questions about touch screens, please consult us. Topway with more than 25 years of experience of LCD display, will give you a satisfactory solution.

Remanufacturer and distributor of liquid crystal, panel and touch screen displays. Available with 100 VAC to 240 VAC power supply. Features include front bezels, USB support, windows, auto-adjust buttons, built-in power supply and USB cable brackets. AutoCAD files accepted. Most items available in stock. 24/7 services provided. RoHS compliant. UL and cUL listed. CE certified. Two year warranty.

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Distributor of touch screen panel liquid crystal displays (LCDs). Available in 10.1 in. sizes. Inventory management services are also offered. Serves the electronics, computer, telecommunications, aerospace, aviation, medical, automotive and transportation industries. ITAR registered. Stock items available.

Manufacturer of standard and custom electric and electronic components including connectors, switches, fuses, block filters, and pulse transformers. Available in various voltage and current ratings, breaking capacity, operating temperature, and features. Also offers PCB assembly services. Serves the energy, aviation and space, automotive, data and communication, medical, and industrial electronic markets. Provides design and product life cycle management services. Meets various international standards including IEC, TUV, VDE, KME, and cURus. RoHS compliant.

Manufacturer of optically bonded, non-touch and touchscreen displays. Features vary depending upon model, including vision 2 display controllers with quad-core multimedia processors, liquid crystal displays, auto-dimmable display backlights, housings with powder-coated die-cast front, horizontal and vertical viewing angles, membrane keyboards, internal temperature sensors, programmable software and resistive touch screens. Meets ASME and OHSAS 18001 standards. CSA and NFPA approved. API registered. CE certified.

Manufacturer of flat-panel industrial monitors and displays rated for Division 1 and Division 2 environments. Custom engineered, designed, and manufactured to handle the dust, dirt, debris and chemical exposure common to rugged and hazardous applications in the oil and gas, pharmaceutical and food processing, manufacturing and chemical industries. Types of monitors include military grade, LCD, rugged, washdown, high definition, wide screen, panel mount, rack mount, flush mount, gas purged, and more.

Manufacturer of resistive touchscreen HMI displays with anodized aluminum housings, USB and Ethernet. Available in four screen sizes, 6.102 to 11.535 in. width, 2.283 in. depth and 5.315 to 8.78 in. height. Surrounding air operating temperature ranges up to +55 degrees C. Serves the automotive, railway system, power engineering, building, lighting, marine, offshore and process industries. Most items available in stock. RoHS compliant. UL listed. CE certified. JIT delivery.

Manufacturer of power, control and information solutions. Products and technologies include: circuit and load protection, computers and operator interfaces, connection devices, drives and motors, energy monitoring, input/output modules, lighting control, motion control, networks and communications, power supplies, programmable controllers, push buttons and signaling devices, relays and timers, safety products, sensors and switches, signal conditioners, software solutions, turbomachinery control.

Distributor of integrated touch screen displays. LCD, sunlight readable TFT, monochrome, chip on glass, TFT LCD, LED, automotive rear seat and OLED displays are also available. Vendor managed inventory (VMI) programs and stock items available. Meets AS9100 Rev C standards. Kanban and JIT delivery.

Manufacturer of Industrial touchscreen displays suitable for railway sign, airport control tower, digital signage, agriculture, factory automation, kiosk and retail applications. Available in 10.4 to 21.5 in. display size, -10 to 60 degrees C operating temperature and 9 to 50 volts DC voltage. Some monitors are offered with fanless and rugged design, LCD display, front panel IP65 waterproof, dual speakers, resistive and capacitive (PCAP) touch options available. EPA registered.

Manufacturer of touchscreen panel displays for medical and industrial applications. Available in 10.1 to 27 in. display sizes. Features vary depending upon model, including LED backlights, plastic design, USB, flat, power connectors, optional side brackets, input video signal interfaces and terminals. Accessories such as power adaptors, cords, cables and stands offered. Meets EN 60601-1-2 standards. Custom options depending upon applications are also provided.

Manufacturer of standard and custom thin film transistor liquid crystal displays (LCD) including human machine interface diagonal touchscreens. Available in 5 VDC power at 200 mA current, 4.3 in. screen sizes, 0.92 in. depth, 4.75 in. width and 3.70 in. height. Features include programmable, graphical operating systems, front panel mountable enclosures, protective overlays, built-in copy protection options and power management controllers. Serves the pharmaceutical packaging identification, instrumentation, emergency response service, recording and bioprocessing industries. Made in the USA.

Distributor of new, surplus, and used medical touchscreen LED and LCD displays. Same day shipping is offered. Serves oil, petrochemical, energy, food processing, mining, pulp, and paper industries.

Manufacturer and distributor of touchscreen, sound, video and theatrical displays. Types include counter top, back-up, extension, dual USB charger, heads up and four sided color changing displays. Available in a variety of configurations. Features vary depending upon model and include LED light strips, wireless remote control, LCD widescreen rear view mirrors and license plate cameras.

Manufacturer of wall mountable and desktop displays. Available in screen sizes ranging from 22 to 70 in. Features vary depending upon model, including removable computer module, echo canceling mic and speaker, portrait, landscape, tabletop orientation, LCD touchscreen, and multi-user interaction. Suitable for retail, hospitality, healthcare, and commercial applications. Serves the health and safety, government, education, and public sector industries.

Manufacturer of alphanumeric, touchscreen and LCD displays. Features vary depending upon model, including built-in Ethernet ports, hand-held versions, single port multi access (SPMA), integrated simulation functions, analog resistive touch, multiple communications, compact flash memory cards and FTP web interfaces. Serves the automotive, food/packaging, electronics, life sciences, material handling, machine tool, oil and gas, water, wastewater, security, detection, entertainment and other industries. 24/7 predictive maintenance services also provided.

Manufacturer of touchscreen displays for home automation, video intercom and door entry system. Features include up to 16 control functions, intuitive operation and capacitive touch display. Lifecycle management, engineering, consulting, installation, maintenance, replacement and training services are provided. Serves the automotive, chemical, marine, metal, food, beverage, mining, power generation or distribution, solar power, printing, aluminum, cement, automation, water, wind power, pulp and paper industries.

ISO 9001 certified worldwide manufacturer of touchscreen terminals, monitors & displays. Graphics touchscreen terminals enable operating, monitoring & control of large scale projects with different PLC"s simultaneously. Features include plain text messages & graphical overview screens for user-friendly diagnostics. Touchscreen terminals are available in sizes of 5.7 in., 6.5 in., 10.4 in. 12.1 in. & 15 in. Terminal features also include Microsoft Windows ® CE.net operating system, USB interfaces, serial interfaces, Ethernet interface, IP65 front, IP20 back & PCMCIA slots.

Six Sigma capable, ISO 9001:2008 & ISO 14000 certified manufacturer of touchscreen displays including flat panel monitors. Types of flat panel monitors include DVI/RGB and hazardous location compatible. Flat panel monitors feature front USB interface, 256K or 16 million color display, analog resistive touch panel, serial/USB touch interfaces, on-screen-display menu for brightness & contrast control, & VESA standard wall mounts. Available with a 2-year warranty. Markets served include industrial, automotive, oil & gas, water/wastewater, semiconductors & agriculture. Modbus-IDA, OMAC & ODVA affiliated. Products are UL® listed, CSA® approved, and ATEX & CE certified. Products are RoHS compliant.

Custom manufacturer of touchscreen displays for stationary storage, equipment, electric and hybrid vehicles. Battery management systems and vehicle control systems are offered. Fleet management software is also provided. Consulting is available as value added service. Serves the e-mobility, automotive and mobile robotics industries.

Precision CNC machining, sheet metal fabrication and assembly services. Repair services are also provided. Fiber optic junction boxes, converters, latches and switches are offered. Uninterruptible power supplies (UPS), liquid crystal displays (LCD), racks, consoles, multiplexers, control panels and quad-core processors and servers are also available. Serves aerospace and defense industries.

Manufacturer of LED/LCD displays for rugged, outdoor, touch embedded and industrial applications. Features vary depending upon model, including standard integrated frames, panel mount, USB interfaces, tempered smudge resistant protected glasses, backlights and LCD panels. Two year warranty.

Worldwide manufacturer of displays including touchscreen flat panel displays. Types include LCD displays & SCD displays. Flat panel touchscreen displays are available in different sizes & specifications. SCD touchscreen displays are available in standard sizes of 19 in. with picture diagonal sizes from 12 in. to 19 in & in rack-mounted & flush-mounted styles.

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On Alibaba.com, you will find a large selection of wholesale touchscreen parts from our suppliers. Whether you are looking for a gaming motherboard or a motherboard cpu combo, we have suppliers listing all sorts of touch screen parts. To pick the right motherboard pc, there are a number of factors to consider- what sockets does the motherboard need to include (this will depend on the cpu it is being connected to), do you need built-in wifi and high-end ports like thunderbolt 3 support? Motherboards also come in three different sizes, ATX, micro ATX and then mini ATX.

Alibaba.com features the most reliable, sturdy, and proficient touchscreen parts for displaying your ads more precisely and beautifully. These touchscreen parts are equipped with smart display features and higher resolutions to show your ads in a more creative way at stores or any other outdoor places. These touchscreen parts are automated and come with stands to be placed at any part of the store.The touchscreen parts are equipped with all the latest and smart technologies that can play your ads more vivaciously on screens with full HD resolutions. These wonderful pieces of touchscreen parts are equipped with a higher contrast ratio, enhanced brightness, and come in various sizes and pixel capacities to fit your requirements. The touchscreen parts are also equipped with enhanced memories and louder sounds to make the entire ad viewing experience unparalleled. Alibaba.com brings a host of different touchscreen parts based on the sizes, shapes.

If your car or truck factory radio LCD with touchscreen monitor needs replaced then we provide some of the best replacement car touch LCD screen replacement parts available on the market today. As is Factory Radio Parts standard: all of our car touchscreen repair kits are developed for both ease of use and functionality – so you can get your tunes blasting again in no time!

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New Vision Display is a custom LCD display manufacturer serving OEMs across diverse markets. One of the things that sets us apart from other LCD screen manufacturers is the diversity of products and customizations we offer. Our LCD portfolio ranges from low-cost monochrome LCDs to high-resolution, high-brightness color TFT LCDs – and pretty much everything in between. We also have extensive experience integrating LCD screen displays into complete assemblies with touch and cover lens.

Sunlight readable, ultra-low power, bistable (“paper-like”) LCDs. Automotive grade, wide operating/storage temperatures, and wide viewing angles. Low tooling costs.

Among the many advantages of working with NVD as your LCD screen manufacturer is the extensive technical expertise of our engineering team. From concept to product, our sales and technical staff provide expert recommendations and attentive support to ensure the right solution for your project.

In addition, our extensive technology portfolio and manufacturing capabilities enable us to deliver high-quality products that meet the unique specifications of any application. To learn more about what makes us the display manufacturer for your needs, get in touch with us today.

As a leading LCD panel manufacturer, NVD manufactures custom LCD display solutions for a variety of end-user applications: Medical devices, industrial equipment, household appliances, consumer electronics, and many others. Our state-of-the-art LCD factories are equipped to build custom LCDs for optimal performance in even the most challenging environments. Whether your product will be used in the great outdoors or a hospital operating room, we can build the right custom LCD solution for your needs. Learn more about the markets we serve below.

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One of the things that sets us apart from other touchscreen display manufacturers is the level of customization we offer. Our product portfolio includes a wide range of TFT & Monochrome LCDs, OLED, touch sensor and glass technologies, which we can provide stand-alone or integrated into complete assemblies.

Our custom display, touch and cover lens solutions are used in a variety of end-user applications. For example, our touchscreens are used in many vehicle infotainment systems and dashboard controls. We also provide custom touch displays for popular marine applications such as watercraft navigation screens and fish finders. For consumer electronics, we manufacture custom touchscreen display solutions and smartphone screen protectors. Whether your application will be used in the great outdoors, a construction site, or a hospital operating room, we can build a custom, all-in-one solution for your needs.

Our strength as a custom display company comes from the extensive technical expertise of our engineering team. The approach our engineers take is always based on experience and data-driven decisions that help you find the right solution for your application. In addition, our extensive manufacturing capabilities enable us to deliver quick design cycles, cost-effective solutions, and high-quality products that will meet your specifications even in the harshest conditions. To learn more about what makes us the display manufacturer for your needs, get in touch with us today.

Stockwell Elastomerics is a leading provider of gaskets for touch screens, displays and integrated touch panel assemblies that serve several functions: sealing, load distributing, gap filling, mechanical shock protection and over-press cushioning.

The obvious location is to seal the enclosure at the edge of the viewing area of the enclosure. The sealing function can be for simple dust sealing, light water exposure such as occasional water drips or cleaning or even more aggressive outdoor applications where there is heavy water exposure.

Often a touch screen gasket or display gasket will help spread the compression load of the housing or bezel on the display. Without a gasket, the enclosure that holds the display in place can create pressure points on the display. In some cases, these pressures can cause distortions, false contacts or short circuits.

Similar to load distributing, touch panel gaskets are used to fill gaps between the screen and the display and/or the screen and bezel. The display gasket will take up gaps generated by tolerance stack-ups in the device.

Display gaskets offer some degree of cushioning to protect the display from damage due to mechanical shock. In the event that a device is dropped or banged, the gasket will act as a touchscreen cushion, offering a limited amount of protection.

Touchscreen gaskets also serve as display cushions when a user presses on the display too hard. The gasket deflects, takes up and spreads the load offering some protection from over-press or overloading in a small area.

LCD dust seals and touch screen dust seals are the most basic requirement of display gasketing. These are often static (not portable), indoor applications where the device is not to be exposed to water. Sealing can be achieved by closed cell sponge materials or fine pore open cell materials such as PORON urethane foam.

Portable electronics or touchscreens used by the public such as gaming touchscreens or indoor information kiosks inevitably will be exposed to some water. This can come from cleaning and beverage splashing, or for portable devices – rain. These electronic devices are also more likely to be exposed to mechanical shocks, such as banging or dropping. Closed cell or compressed microcellular foam materials will offer more protection against incidental, light water exposure.

Outdoor displays such as outdoor information kiosks, ATMs and remote monitoring equipment require more design consideration. To contend with environments such as direct or wind-driven rain, sealing an enclosure, case or housing from ingress requires the proper material as well as proper compression on the gasket. Silicone foam or silicone sponge materials are preferred. Silicone gaskets remain flexible at low temperatures allowing for continued sealing against melting ice and snow as well as protecting against mechanical shock where many other materials will firm up in the cold and transfer energy. Other key features are: closed cell structure, low-stress relaxation, UV and ozone resistance, and general long life.

Ruggedized electronics typically need to withstand much more aggressive environments. This may include passing rain or wash down tests such as IP65, IP66 and possibly IP67. Beyond sealing, they often need to survive the cold soak drop test, tumbling, EMI susceptibility, and a variety of other tests depending on usage. View more information on ruggedizing electronics.

Light leaking is sometimes a concern with certain LCD or LED display applications. This can be addressed with black gasketing with either a very thin adhesive or a black supported adhesive. A common material configuration for this is soft PORON urethane foam with 3M 9795B adhesive. The 3M 9795B is a film supported double coat adhesive with a black PET support layer that does not pipe light.

Touchscreen gaskets and display gaskets tend to have narrow walls that don’t always lend themselves to easy installation. This can be addressed in a few ways such as fixturing or utilizing the centers as temporary supports. The preferred adhesives for touchscreen gaskets and display gaskets are repositionable adhesives such as Adchem 8311M or 3M 9415 depending on the bond strength required. Stockwell Elastomerics also offers medium and high bond strength adhesives for permanent bonding. View the current listing of pressure sensitive adhesive options.

Most touch panel or touch screen manufacturers offer guidelines for gasketing. These typically show the active screen area, viewing area, and the gasket area. The manufacturer offers various recommendations on adhesive strength and gasket material type, but caution should be taken since each application will vary.

Broad recommendations such as “closed cell foam” do not take into consideration factors such as stress relaxation, compression set, long term sealing performance, outgassing, plasticizer interaction, cost, and manufacturability. Over-designing the gasket can drive the cost up, whereas under designing could result in damaged devices and leaks when the units are in the field. Stockwell Elastomerics can offer guidance on design and manufacturability of touchscreen gaskets or touch panel gaskets. Key design points include:

The interior opening of the gasket should follow the touch screen manufacturer’s recommendation that stays clear of the active area. The outer dimension are defined by the available space behind the bezel or in the case. A rough rule of thumb is that the gasket wall should be 1.5x the thickness. (Example: .062″ thick gasket should have a gasket with .093″ or greater flange width.) This allows for die cutting and makes for a stable gasket when installed. A gasket that is taller than it is wide tends to fold over during compression. The exception to this is when the gasket is captive in a groove.

It is important to keep in mind the clamping loads. While wider gasket walls generally seal better, the overall surface area is directly related to the loads applied to the LCD and touchscreen. Compression Force Deflection curves of various materials are available to aid designers.

Some housing designs allow the touch panel gasket to wrap around the sides to make a tighter fit in the housing. Wrapping the gasket also gives the touch panel assembly additional cushioning for mechanical shock.

Proper compression of the gasket is critical to sealing. A rigid bezel or frame is required to prevent bowing between fasteners. Softer materials can help offset this however there are some limitations. Closed cell gasket materials help prevent wicking through the material but may not be soft enough. Soft open cell materials can be used but require more than 50% deflection (.062″ thick deflected to .031″ thick) in order to close the cell openings.

The gasket thickness will depend on the designed gap in the enclosure, the fastening scheme, rigidity of the housing and the level of sealing required. Many touch screen gaskets are thin and soft but as the display gets larger the tolerance stacks typically get larger as well. This may require a thicker gasket depending on the fastener locations.

PORON microcellular urethane foams are designed for electronic applications, therefore there are many standards, off-the-shelf thickness and firmness options available. Further, PORON is cast to an accurate thickness tolerance. PORON in thickness of .062″ and greater is cast to ± 10%. This is a very tight tolerance for a cellular gasketing material.

Designing the touch panel gasket for manufacturability can keep costs down – both part cost and touch panel assembling cost. For mid- and high-volume quantities, die cutting is the preferred method. A steel rule die can be produced quickly and inexpensively to allow the gasket to be kiss-cut against the adhesive release liner. Kiss-cutting allows the gasket installer to peel the gasket from a roll. Kiss-cut parts drastically improve throughput during assembly as compared to individually removing a liner from a loose part.

Some OEMs and contract manufacturers prefer to have the center of the gasket remain in place, held in place with small, breakaway tabs. Leaving the centers intact allows for easier positioning on the display when a fixture is not being used. Low tack, clean peeling adhesive is needed.

Specification requirements help with material selection, for example, NEMA 4, IP 65 or IP 66 will require closed cell or solid materials in order to pass testing. Less aggressive requirements such as NEMA 12 and IP 54 allow for more material options.

Typical UL specifications are UL 94, UL 508 (UL 60947) and UL 50. UL 94 addresses a flame requirement, UL 508 (UL 60947) is suitability for industrial controls, and UL 50 and UL 50E are for gasketing. Other UL specifications may apply depending on how and where the end product is being used.

Glass substrate with ITO electrodes. The shapes of these electrodes will determine the shapes that will appear when the LCD is switched ON. Vertical ridges etched on the surface are smooth.

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directlybacklight or reflector to produce images in color or monochrome.seven-segment displays, as in a digital clock, are all good examples of devices with these displays. They use the same basic technology, except that arbitrary images are made from a matrix of small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight will have black lettering on a background that is the color of the backlight, and a character negative LCD will have a black background with the letters being of the same color as the backlight. Optical filters are added to white on blue LCDs to give them their characteristic appearance.

LCDs are used in a wide range of applications, including LCD televisions, computer monitors, instrument panels, aircraft cockpit displays, and indoor and outdoor signage. Small LCD screens are common in LCD projectors and portable consumer devices such as digital cameras, watches, calculators, and mobile telephones, including smartphones. LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications. The phosphors used in CRTs make them vulnerable to image burn-in when a static image is displayed on a screen for a long time, e.g., the table frame for an airline flight schedule on an indoor sign. LCDs do not have this weakness, but are still susceptible to image persistence.

Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, often made of Indium-Tin oxide (ITO) and two polarizing filters (parallel and perpendicular polarizers), the axes of transmission of which are (in most of the cases) perpendicular to each other. Without the liquid crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer. Before an electric field is applied, the orientation of the liquid-crystal molecules is determined by the alignment at the surfaces of electrodes. In a twisted nematic (TN) device, the surface alignment directions at the two electrodes are perpendicular to each other, and so the molecules arrange themselves in a helical structure, or twist. This induces the rotation of the polarization of the incident light, and the device appears gray. If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer. This light will then be mainly polarized perpendicular to the second filter, and thus be blocked and the pixel will appear black. By controlling the voltage applied across the liquid crystal layer in each pixel, light can be allowed to pass through in varying amounts thus constituting different levels of gray.

The chemical formula of the liquid crystals used in LCDs may vary. Formulas may be patented.Sharp Corporation. The patent that covered that specific mixture expired.

Most color LCD systems use the same technique, with color filters used to generate red, green, and blue subpixels. The LCD color filters are made with a photolithography process on large glass sheets that are later glued with other glass sheets containing a TFT array, spacers and liquid crystal, creating several color LCDs that are then cut from one another and laminated with polarizer sheets. Red, green, blue and black photoresists (resists) are used. All resists contain a finely ground powdered pigment, with particles being just 40 nanometers across. The black resist is the first to be applied; this will create a black grid (known in the industry as a black matrix) that will separate red, green and blue subpixels from one another, increasing contrast ratios and preventing light from leaking from one subpixel onto other surrounding subpixels.Super-twisted nematic LCD, where the variable twist between tighter-spaced plates causes a varying double refraction birefringence, thus changing the hue.

LCD in a Texas Instruments calculator with top polarizer removed from device and placed on top, such that the top and bottom polarizers are perpendicular. As a result, the colors are inverted.

The optical effect of a TN device in the voltage-on state is far less dependent on variations in the device thickness than that in the voltage-off state. Because of this, TN displays with low information content and no backlighting are usually operated between crossed polarizers such that they appear bright with no voltage (the eye is much more sensitive to variations in the dark state than the bright state). As most of 2010-era LCDs are used in television sets, monitors and smartphones, they have high-resolution matrix arrays of pixels to display arbitrary images using backlighting with a dark background. When no image is displayed, different arrangements are used. For this purpose, TN LCDs are operated between parallel polarizers, whereas IPS LCDs feature crossed polarizers. In many applications IPS LCDs have replaced TN LCDs, particularly in smartphones. Both the liquid crystal material and the alignment layer material contain ionic compounds. If an electric field of one particular polarity is applied for a long period of time, this ionic material is attracted to the surfaces and degrades the device performance. This is avoided either by applying an alternating current or by reversing the polarity of the electric field as the device is addressed (the response of the liquid crystal layer is identical, regardless of the polarity of the applied field).

Displays for a small number of individual digits or fixed symbols (as in digital watches and pocket calculators) can be implemented with independent electrodes for each segment.alphanumeric or variable graphics displays are usually implemented with pixels arranged as a matrix consisting of electrically connected rows on one side of the LC layer and columns on the other side, which makes it possible to address each pixel at the intersections. The general method of matrix addressing consists of sequentially addressing one side of the matrix, for example by selecting the rows one-by-one and applying the picture information on the other side at the columns row-by-row. For details on the various matrix addressing schemes see passive-matrix and active-matrix addressed LCDs.

LCDs are manufactured in cleanrooms borrowing techniques from semiconductor manufacturing and using large sheets of glass whose size has increased over time. Several displays are manufactured at the same time, and then cut from the sheet of glass, also known as the mother glass or LCD glass substrate. The increase in size allows more displays or larger displays to be made, just like with increasing wafer sizes in semiconductor manufacturing. The glass sizes are as follows:

Until Gen 8, manufacturers would not agree on a single mother glass size and as a result, different manufacturers would use slightly different glass sizes for the same generation. Some manufacturers have adopted Gen 8.6 mother glass sheets which are only slightly larger than Gen 8.5, allowing for more 50 and 58 inch LCDs to be made per mother glass, specially 58 inch LCDs, in which case 6 can be produced on a Gen 8.6 mother glass vs only 3 on a Gen 8.5 mother glass, significantly reducing waste.AGC Inc., Corning Inc., and Nippon Electric Glass.

The origins and the complex history of liquid-crystal displays from the perspective of an insider during the early days were described by Joseph A. Castellano in Liquid Gold: The Story of Liquid Crystal Displays and the Creation of an Industry.IEEE History Center.Peter J. Wild, can be found at the Engineering and Technology History Wiki.

In 1888,Friedrich Reinitzer (1858–1927) discovered the liquid crystalline nature of cholesterol extracted from carrots (that is, two melting points and generation of colors) and published his findings at a meeting of the Vienna Chemical Society on May 3, 1888 (F. Reinitzer: Beiträge zur Kenntniss des Cholesterins, Monatshefte für Chemie (Wien) 9, 421–441 (1888)).Otto Lehmann published his work "Flüssige Kristalle" (Liquid Crystals). In 1911, Charles Mauguin first experimented with liquid crystals confined between plates in thin layers.

In 1922, Georges Friedel described the structure and properties of liquid crystals and classified them in three types (nematics, smectics and cholesterics). In 1927, Vsevolod Frederiks devised the electrically switched light valve, called the Fréedericksz transition, the essential effect of all LCD technology. In 1936, the Marconi Wireless Telegraph company patented the first practical application of the technology, "The Liquid Crystal Light Valve". In 1962, the first major English language publication Molecular Structure and Properties of Liquid Crystals was published by Dr. George W. Gray.RCA found that liquid crystals had some interesting electro-optic characteristics and he realized an electro-optical effect by generating stripe-patterns in a thin layer of liquid crystal material by the application of a voltage. This effect is based on an electro-hydrodynamic instability forming what are now called "Williams domains" inside the liquid crystal.

In 1964, George H. Heilmeier, then working at the RCA laboratories on the effect discovered by Williams achieved the switching of colors by field-induced realignment of dichroic dyes in a homeotropically oriented liquid crystal. Practical problems with this new electro-optical effect made Heilmeier continue to work on scattering effects in liquid crystals and finally the achievement of the first operational liquid-crystal display based on what he called the George H. Heilmeier was inducted in the National Inventors Hall of FameIEEE Milestone.

In the late 1960s, pioneering work on liquid crystals was undertaken by the UK"s Royal Radar Establishment at Malvern, England. The team at RRE supported ongoing work by George William Gray and his team at the University of Hull who ultimately discovered the cyanobiphenyl liquid crystals, which had correct stability and temperature properties for application in LCDs.

The idea of a TFT-based liquid-crystal display (LCD) was conceived by Bernard Lechner of RCA Laboratories in 1968.dynamic scattering mode (DSM) LCD that used standard discrete MOSFETs.

On December 4, 1970, the twisted nematic field effect (TN) in liquid crystals was filed for patent by Hoffmann-LaRoche in Switzerland, (Swiss patent No. 532 261) with Wolfgang Helfrich and Martin Schadt (then working for the Central Research Laboratories) listed as inventors.Brown, Boveri & Cie, its joint venture partner at that time, which produced TN displays for wristwatches and other applications during the 1970s for the international markets including the Japanese electronics industry, which soon produced the first digital quartz wristwatches with TN-LCDs and numerous other products. James Fergason, while working with Sardari Arora and Alfred Saupe at Kent State University Liquid Crystal Institute, filed an identical patent in the United States on April 22, 1971.ILIXCO (now LXD Incorporated), produced LCDs based on the TN-effect, which soon superseded the poor-quality DSM types due to improvements of lower operating voltages and lower power consumption. Tetsuro Hama and Izuhiko Nishimura of Seiko received a US patent dated February 1971, for an electronic wristwatch incorporating a TN-LCD.

In 1972, the concept of the active-matrix thin-film transistor (TFT) liquid-crystal display panel was prototyped in the United States by T. Peter Brody"s team at Westinghouse, in Pittsburgh, Pennsylvania.Westinghouse Research Laboratories demonstrated the first thin-film-transistor liquid-crystal display (TFT LCD).high-resolution and high-quality electronic visual display devices use TFT-based active matrix displays.active-matrix liquid-crystal display (AM LCD) in 1974, and then Brody coined the term "active matrix" in 1975.

In 1972 North American Rockwell Microelectronics Corp introduced the use of DSM LCDs for calculators for marketing by Lloyds Electronics Inc, though these required an internal light source for illumination.Sharp Corporation followed with DSM LCDs for pocket-sized calculators in 1973Seiko and its first 6-digit TN-LCD quartz wristwatch, and Casio"s "Casiotron". Color LCDs based on Guest-Host interaction were invented by a team at RCA in 1968.TFT LCDs similar to the prototypes developed by a Westinghouse team in 1972 were patented in 1976 by a team at Sharp consisting of Fumiaki Funada, Masataka Matsuura, and Tomio Wada,

In 1983, researchers at Brown, Boveri & Cie (BBC) Research Center, Switzerland, invented the passive matrix-addressed LCDs. H. Amstutz et al. were listed as inventors in the corresponding patent applications filed in Switzerland on July 7, 1983, and October 28, 1983. Patents were granted in Switzerland CH 665491, Europe EP 0131216,

The first color LCD televisions were developed as handheld televisions in Japan. In 1980, Hattori Seiko"s R&D group began development on color LCD pocket televisions.Seiko Epson released the first LCD television, the Epson TV Watch, a wristwatch equipped with a small active-matrix LCD television.dot matrix TN-LCD in 1983.Citizen Watch,TFT LCD.computer monitors and LCD televisions.3LCD projection technology in the 1980s, and licensed it for use in projectors in 1988.compact, full-color LCD projector.

In 1990, under different titles, inventors conceived electro optical effects as alternatives to twisted nematic field effect LCDs (TN- and STN- LCDs). One approach was to use interdigital electrodes on one glass substrate only to produce an electric field essentially parallel to the glass substrates.Germany by Guenter Baur et