tft display structure brands

... and dusty conditions. Plus, the protective glass serves to protect the display against sharp foreign objects, meaning the screen is still operable even with deep scratches on the surface.

TOPWAY Color TFT Modules are designed to provide robust and easy to install display products for industrial applications. For many years in business, the broad design experience and the full range of iconic products made ...

VMD 3002 is a robust 10.4-inch TFT LCD monitor with enhanced brightness, projected capacitive touchscreen, and high performance loud speaker. It is designed with a single cable to consolidate ...

VMD 1001 is a 7-inch TFT LCD monitor with 4 wire resistant touch screen sensor. With the high brightness display and automatically brightness control, it is designed ...

VMD 2002 is an 8-inch TFT LCD monitor with 4 wire resistant touch screen sensor. With the high brightness display and automatically brightness control, it is designed ...

Model Name：AMG-19OPDX01T7Screen Size：19"Active Display Area (mm)：376.32(H)x301.06(V)Pixel Pitch (mm)：0.294(H)x0.294(V)Display Mode：Normally whiteDisplay Resolution (pixel)：1280x1024Contrast Ratio：1000:1Touch screen(optional)：PCAP ...

The HANNspree HP248WJB is a 23.8-inch Full HD monitor featuring an integrated 5Mpixel webcam, microphone array and stereo speakers for video conferencing and live-streaming. The TFT panel delivers ultra-wide ...

... daisy chainable HS272PDB monitor has both a DisplayPort input and a DisplayPort output. The DisplayPort output connects to the next downstream display. This cabling arrangement, with one DisplayPort cable between each ...

Hengstar embedded open display products adopt industrial process, with standard DC 12V power input, 9 ~ 36V optional, working temperature support - 30 ~ ...

... . This compact display is less than 8” wide and weighs only 1 kg, and the same model is available in screen sizes up to 21.5". This touchscreen monitor can be connected to any computer including a rugged ...

Sysgration"s UPC-M series open frame monitor products are fit for various industries. With 10.1” to 21.5" display, featuring a projected capacitive touch and anti-glare display, the high-end UPC-M series can also be integrated ...

Sysgration"s UPC-M series open frame monitor products are fit for various industries. With 10.1” to 21.5" display, featuring a projected capacitive touch and anti-glare display, the high-end UPC-M series can also be integrated ...

Sysgration"s UPC-M series open frame monitor products are fit for various industries. With 10.1” to 21.5" display, featuring a projected capacitive touch and anti-glare display, the high-end UPC-M series can also be integrated ...

STONE Technologies is a proud manufacturer of superior quality TFT LCD modules and LCD screens. The company also provides intelligent HMI solutions that perfectly fit in with its excellent hardware offerings.

STONE TFT LCD modules come with a microcontroller unit that has a 1GHz Cortex-A8 CPU. Such a module can easily be transformed into an HMI screen. Simple hexadecimal instructions can be used to control the module through the UART port. Furthermore, you can seamlessly develop STONE TFT LCD color user interface modules and add touch control, features to them.

You can also use a peripheral MCU to serially connect STONE’s HMI display via TTL. This way, your HMI display can supply event notifications and the peripheral MCU can then execute them. Moreover, this TTL-connected HMI display can further be linked to microcontrollers such as:

Becoming a reputable TFT LCD manufacturer is no piece of cake. It requires a company to pay attention to detail, have excellent manufacturing processes, the right TFT display technology, and have a consumer mindset.

Now, we list down 10 of the best famous LCD manufacturers globally. We’ll also explore why they became among the top 10 LCD display Manufacturers in the world.

Interface Devises Business includes Display and Senor, Sensor, and Application Solutions. As a leading company in the global semiconductor display industry, BOE has made the Chinese display industry develop from scratch to maturity and prosperity. Now, more than one-quarter of the global display panels are made by BOE, with its UHD, flexible display, microdisplay, and other solutions broadly applied to well-known worldwide brands.

LG Display is a leading manufacturer of thin-film transistor liquid crystal displays (TFT-LCD) panels, OLED, and flexible displays.LG Display began developing TFT-LCD in 1987 and currently offers Display panels in a variety of sizes and specifications using different cutting-edge technologies (IPS, OLED, and flexible technology).

LG Display now operates back-end assembly plants in South Korea, China, and Vietnam. In addition, LG Display operates a sales subsidiary with a global network to effectively serve overseas markets.

With innovative and differentiated technologies, QINNOOptoelectronics provides advanced display integration solutions, including 4K2K ultra-high resolution, 3D naked eye, IGZO, LTPS, AMOLED, OLED, and touch solutions. Qinnooptoelectronics sets specifications and leads the market. A wide range of product line is across all kinds of TFT LCD panel modules, touch modules, for example, TV panel, desktop and laptop computer monitor with panels, small and medium scale “panels, medical, automotive, etc., the supply of cutting-edge information and consumer electronics customers around the world, for the world TFT – LCD (thin-film transistor liquid crystal display) leading manufacturers.

AU Optronics Co., LTD., formerly AU Optronics Corporation, was founded in August 1996. It changed its name to AU Optronics after its merger with UNIOPtronics in 2001. Through two mergers, AU has been able to have a full range of generations of production lines for panels of all sizes.Au Optronics is a TFT-LCD design, manufacturing, and r&d company. Since 2008, au Optronics has entered the green energy industry, providing customers with high-efficiency solar energy solutions.

Sharp has been called the “father of LCD panels”.Since its founding in 1912, Sharp developed the world’s first calculator and LIQUID crystal display, represented by the living pencil, which was invented as the company name. At the same time, Sharp is actively expanding into new areas to improve people’s living standards and social progress. Made a contribution.

Toshiba is a famous multinational company with a history of 130 years. It covers a wide range of businesses, including social infrastructure construction, home appliances, digital products, and electronic components. It covers almost every aspect of production and life. Toshiba has the largest research and development institution in Japan. Through unremitting innovation and development, Toshiba has been at the forefront of science and technology in the world.

From the introduction of Japan’s original washing machines, refrigerators, and other household appliances, to the world’s first laptop, the first 16MB flash memory, the world’s smallest 0.85-inch HDDs; Create advanced HDDVD technology; Toshiba created many “world firsts” in the research and manufacture of new SED displays and contributed to changing people’s lives through constant technological innovation.

Tianma microelectronics co., LTD., founded in 1983, the company focus on smartphones, tablets, represented by high order laptop display market of consumer goods and automotive, medical, POS, HMI, etc., represented by professional display market, and actively layout smart home, intelligent wear, AR/VR, unmanned aerial vehicles (UAVs) and other emerging markets, to provide customers with the best product experience.IN terms of technology, the company has independently mastered leading technologies such as LTPS-TFT, AMOLED, flexible display, Oxide-TFT, 3D display, transparent display, and in-cell/on-cell integrated touch control. TFT-LCD key Materials and Technologies National Engineering Laboratory, national enterprise Technology Center, post-doctoral mobile workstation, and undertake national Development and Reform Commission, The Ministry of Science and Technology, the Ministry of Industry and Information Technology, and other major national thematic projects. The company’s long-term accumulation and continuous investment in advanced technology lay the foundation for innovation and development in the field of application.

Let us start with the basics first; refresh the knowledge about TN and LCD displays in general, later we will talk about TFTs (Thin Film Transistors), how they differ from regular monochrome LCD displays. Then we will go on to the ghosting effect, so we will not only discuss the technology behind the construction of the TFT, but also some phenomena, like the ghosting effect, or grayscale inversion, that are important to understand when using an LCD TFT display.

Next, we will look at different technologies of the TFT LCD displays like TN, IPS, VA, and of course about transmissive and transflective LCD displays, because TFT displays also can be transmissive and transflective. In the last part we will talk about backlight.

Let us start with a short review of the most basic liquid crystal cell, which is the TN (twisted nematic) display. On the picture above, we can see that the light can be transmit through the cell or blocked by the liquid crystal cell using voltage. If you want to learn more about monochrome LCD displays and the basics of LCD displays, follow this link.

What is a TFT LCD display and how it is different from a monochrome LCD display? TFT is called an active display. Active, means we have one or more transistors in every cell, in every pixel and in every subpixel. TFT stands for Thin Film Transistor, transistors that are very small and very thin and are built into the pixel, so they are not somewhere outside in a controller, but they are in the pixel itself. For example, in a 55-inch TV set, the TFT display contains millions of transistors in the pixels. We do not see them, because they are very small and hidden, if we zoom in, however, we can see them in every corner of each pixel, like on the picture below.

On the picture above we can see subpixels, that are basic RGB (Red, Green, Blue) colors and a black part, with the transistors and electronic circuits. We just need to know that we have pixels, and subpixels, and each subpixel has transistors. This makes the display active, and thus is called  the TFT display. TFT displays are usually color displays, but there are also monochrome TFT displays, that are active, and have transistors, but have no colors. The colors in the TFT LCD display are typically added by color filters on each subpixel. Usually the filters are RGB, but we also have RGBW (Red, Green, Blue, White) LCD displays with added subpixels without the filter (White) to make the display brighter.

Going a little bit deeper, into the TFT cell, there is a part inside well known to us from the monochrome LCD display Riverdi University lecture. We have a cell, liquid crystal, polarizers, an ITO (Indium Tin Oxide) layer for the electrodes, and additionally an electronic circuit. Usually, the electronic circuit consists of one transistor and some capacitors to sustain the pixel state when we switch the pixel OFF and ON. In a TFT LCD display the pixels are much more complicated because apart from building the liquid crystal part, we also need to build an electronic part.

That is why TFT LCD display technologies are very expensive to manufacture. If you are familiar with electronics, you know that the transistor is a kind of switch, and it allows us to switch the pixel ON and OFF. Because it is built into the pixel itself, it can be done very quickly and be very well controlled. We can control the exact state of every pixel not only the ON and OFF states, but also all the states in between. We can switch the light of the cells ON and OFF in several steps. Usually for TFT LCD displays it will be 8-bit steps per color, so we have 256 steps of brightness for every color, and every subpixel. Because we have three subpixels, we have a 24-bit color range, that means over 16 million combinations, we can, at least theoretically, show on our TFT LCD display over 16 million distinct colors using RGB pixels.

Now that we know how the TFT LCD display works, we can now learn some practical things one of which is LCD TFT ghosting. We know how the image is created, but what happens when we have the image on the screen for a prolonged time, and how to prevent it. In LCD displays we have something called LCD ghosting. We do not see it very often, but in some displays this phenomenon still exists.

If some elements of the picture i.e., your company logo is in the same place of the screen for a long period of time, for couple of weeks, months or a year, the crystals will memorize the state and later, when we change the image, we may see some ghosting of those elements. It really depends on many conditions like temperature and even the screen image that we display on the screen for longer periods of time. When you build your application, you can use some techniques to avoid it, like very rapid contrast change and of course to avoid the positioning the same image in the same position for a longer time.

You may have seen this phenomenon already as it is common in every display technology, and even companies like Apple put information on their websites, that users may encounter this phenomenon and how to fix it. It is called image ghosting or image persistence, and even Retina displays are not free of it.

Another issue present in TFT displays, especially TN LCD displays, is grayscale inversion. This is a phenomenon that changes the colors of the screen according to the viewing angle, and it is only one-sided. When buying a TFT LCD display, first we need to check what kind of technology it is. If it is an IPS display, like the Riverdi IPS display line, then we do not need to worry about the grayscale inversion because all the viewing angles will be the same and all of them will be very high, like 80, 85, or 89 degrees. But if you buy a more common or older display technology type, like the TN (twisted nematic) display, you need to think where it will be used, because one viewing angle will be out. It may be sometimes confusing, and you need to be careful as most factories define viewing direction of the screen and mistake this with the greyscale inversion side.

On the picture above, you can see further explanation of the grayscale inversion from Wikipedia. It says that some early panels and also nowadays TN displays, have grayscale inversion not necessary up-down, but it can be any angle, you need to check in the datasheet. The reason technologies like IPS (In-Plane Switching), used in the latest Riverdi displays, or VA, were developed, was to avoid this phenomenon. Also, we do not want to brag, but the Wikipedia definition references our website.

We know already that TN (twisted nematic) displays, suffer from grayscale inversion, which means the display has one viewing side, where the image color suddenly changes. It is tricky, and you need to be careful. On the picture above there is a part of the LCD TFT specification of a TN (twisted nematic) display, that has grayscale inversion, and if we go to this table, we can see the viewing angles. They are defined at 70, 70, 60 and 70 degrees, that is the maximum viewing angle, at which the user can see the image. Normally we may think that 70 degrees is better, so we will choose left and right side to be 70 degrees, and then up and down, and if we do not know the grayscale inversion phenomena, we may put our user on the bottom side which is also 70 degrees. The viewing direction will be then like a 6 o’clock direction, so we call it a 6 o’clock display. But you need to be careful! Looking at the specification, we can see that this display was defined as a 12 o’clock display, so it is best for it to be seen from a 12 o’clock direction. But we can find that the 12 o’clock has a lower viewing angle – 60 degrees. What does it mean? It means that on this side there will be no grayscale inversion. If we go to 40, 50, 60 degrees and even a little bit more, probably we will still see the image properly. Maybe with lower contrast, but the colors will not change. If we go from the bottom, from a 6 o’clock direction where we have the grayscale inversion, after 70 degrees or lower we will see a sudden color change, and of course this is something we want to avoid.

To summarize, when you buy older technology like TN and displays, which are still very popular, and Riverdi is selling them as well, you need to be careful where you put your display. If it is a handheld device, you will see the display from the bottom, but if you put it on a wall, you will see the display from the top, so you need to define it during the design phase, because later it is usually impossible or expensive to change the direction.

We will talk now about the other TFT technologies, that allow us to have wider viewing angles and more vivid colors. The most basic technology for monochrome and TFT LCD displays is twisted nematic (TN). As we already know, this kind of displays have a problem with grayscale inversion. On one side we have a higher retardation and will not get a clear image. That is why we have other technologies like VA (Vertical Alignment), where the liquid crystal is differently organized, and another variation of the TFT technology – IPS which is In-Plane Switching. The VA and IPS LCD displays do not have a problem with the viewing angles, you can see a clear image from all sides.

Apart from the different organization of the liquid crystals, we also organize subpixels a little bit differently in a VA and IPS LCD displays. When we look closer at the TN display, we will just see the subpixels with color filters. If we look at the VA or IPS display they will have subpixels of subpixels. The subpixels are divided into smaller parts. In this way we can achieve even wider viewing angles and better colors for the user, but of course, it is more complicated and more expensive to do.

The picture above presents the TN display and grayscale inversion. For IPS or VA technology there is no such effect. The picture will be the same from all the sides we look so these technologies are popular where we need wide viewing angles, and TN is popular where we don’t need that, like in monitors. Other advantages of IPS LCD displays are they give accurate colors, and wide viewing angles. What is also important in practice, in our projects, is that the IPS LCD displays are less susceptible to mechanical force. When we apply mechanical force to the screen, and have an optically bonded touch screen, we push the display as well as squeeze the cells. When we have a TN display, every push on the cell changes the image suddenly, with the IPS LCD displays with in-plane switching, different liquid crystals organization, this effect is lesser. It is not completely removed but it is much less distinct. That is another reason IPS displays are very popular for smartphones, tablets, when we have the touchscreens usually optically bonded.

If we wanted to talk about disadvantages, there is a question mark over it, as some of them may be true, some of them do not rely on real cases, what kind of display, what kind of technology is it. Sometimes the IPS displays can have higher power consumption than others, in many cases however, not. They can be more expensive, but not necessarily. The new IPS panels can cost like TN panels, but IPS panels definitely have a longer response time. Again, it is not a rule, you can make IPS panels that are very fast, faster than TN panels, but if you want the fastest possible display, probably the TN panel will be the fastest. That is why the TN technology is still popular on the gaming market. Of course, you can find a lot of discussions on the internet, which technology is better, but it really depends on what you want to achieve.

Now, let us look at the backlight types. As we see here, on the picture above, we have four distinct types of backlight possible. The most common, 95 or 99 per cent of the TFT LCD displays on the market are the transmissive LCD display type, where we need the backlight from the back. If you remember from our Monochrome LCD Displays lecture, for transmissive LCD displays you need the backlight to be always on. If you switch the backlight off, you will not see anything. The same as for monochrome LCD displays, but less popular for TFT displays, we have the transflective LCD display type. They are not popular because usually for transflective TFT displays, the colors lack in brightness, and the displays are not very practical to use. You can see the screen, but the application is limited. Some transflective LCD displays are used by military, in applications where power consumption is paramount; where you can switch the backlight off and you agree to have lower image quality but still see the image. Power consumption and saving energy is most important in some kind of applications and you can use transflective LCD displays there. The reflective type of LCD displays are almost never used in TFT. There is one technology called Low Power Reflective Displays (LPRD) that is used in TFT but it is not popular. Lastly, we have a variation of reflective displays with frontlight, where we add frontlight to the reflective display and have the image even without external light.

Just a few words about Low Power Reflective Displays (LPRD). This kind of display uses environmental light, ambient light to reflect, and produce some colors. The colors are not perfect, not perfectly clear, but this technology is becoming increasingly popular because it allows to have color displays in battery powered applications. For example, a smartwatch would be a case for that technology, or an electrical bike or scooter, where we can not only have a standard monochrome LCD display but also a TFT LCD color display without the backlight; we can see the image even in

strong sunlight and not need backlight at all. So, this kind of TFL LCD display technology is getting more and more popular when we have outdoor LCD displays and need a low power consumption.

On the picture above, we have some examples of how transmissive and reflective LCD displays work in the sunlight. If we have a simple image, like a black and white pattern, then on a transmissive LCD display, even with 1000 candela brightness, the image probably will be lower quality than for a reflective LCD display; if we have sunlight, we have very strong light reflections on the surface of the screen. We have talked about contrast in more detail in the lecture Sunlight Readable Displays. So, reflective LCD displays are a better solution for outdoor applications than transmissive LCD displays, where you need a really strong backlight, 1000 candela or more, to be really seen outdoors.

To show you how the backlight of LCD displays is built, we took the picture above. You can see the edge backlight there, where we have LEDs here on the small PCB on the edge, and we have a diffuser that distributes the light to the whole surface of LCD screen.

In addition to the backlight, we have something that is called a frontlight. It is similar to backlight, it also uses the LEDs to put the light into it, but the frontlight needs to be transparent as we have the display behind. On the example on the picture above we can see an e-paper display. The e-paper display is also a TFT display variation, but it is not LCD (liquid crystal), it is a different technology, but the back of the display is the same and it is reflective. The example you see is the Kindle 4 eBook reader. It uses an e-paper display and a frontlight as well, so you can read eBooks even during the night.

The two buzzwords the tech world has been chatting about for a number of years now is IPS, (In-Plane Switching) screen technology used for liquid crystal displays or LCD’s for short, and TFT (Thin-Film-Transistor) an active matrix screen technology, which is more expensive, but a sharper image.

TFT (Thin-Film-Transistor) Liquid Crystal Display is a thin display type, where a transistor embedded into each crystal gate; these transistors are then printed on thin-transparent film. The technology was designed to improve image qualities, such as contrast and addressability.

Also designed in the late 1980’s, TFT display technologies is just another variation of LCD displays that offer greater color, contrast, and response times as opposed to available passive matrix LCD’s. One of the primary differences between IPS and TFT display technologies is the cost. IPS is more expensive than TN technology. However, there are some key differences between the two that should be noted.

Before we go into the differences, let’s talk about features of each technology. Note that we’re not talking TVs, computer, or tablets, but screens on a much smaller scale, (think 7” or smaller) which uses different rules to fit that scale. First, it’s interesting to discover that the TFT display technologies is the most common type of color display technology; more monochrome displays still out-sell color, due to lower cost and lower power consumption, however, the narrow poor visibility of TFTs in direct sunlight is their downside; but I’m getting ahead of myself here.

Brilliant color image – this is a huge advance in technology, from a Twisted Nematic (TN) display that only produced 6-bit color, to an 8-bit color display with the IPS technology

TFT display technologies have developed over the years and have become quite popular in tech circles. The features offered with this advancing technology are:Superior color display – for technology that requires it or for consumers that desire color screens

Features a longer half-life, (half-life is the amount of time in hours before the display is 50% as bright as when it was first turned on), than OLEDs and comes in varying sizes, from under an inch up to over 15 inches

Variety of displays, which can be interfaced through a variety of bus types, including 18 and 24 bit for red/green/blue, LVDS, and 8 bit and 16 bit for a CPU – many controllers allow for two or more different types of interfaces on the same TFT screen

Let me explain. As you can see, both have excellent color display and clarity; however, IPS screens offer greater color reproduction and viewing angles because of the way crystal orientation and polarizers are arranged. In a TFT screen, the structure of the crystals results in angular retardation in the light. The IPS screens thus offer less distortion properties. Other differences include power consumption and cost. With IPS screens, it takes more power (up to 15% more) than with a TFT screen. If you’re on a monitor, such as a computer screen that’s bigger than 7 inches, it will drain your battery faster than if you’re on a 3.5” screen. Regarding cost, IPS panels are more expensive to produce than TFT panels.

The color channels increase from 6 bits (TN displays) to 8 bits (IPS displays) to ensure the precision of shades per color channel, thus increasing manufacturing costs

If you want the benefits of having a Smartphone without a huge price tag, then TFT devices are your best bet. Another difference is that IPS screens have longer response times than TFT screens, so the lag output is greater. A few other key differences to be aware of are that with IPS panels, you get a bigger variety of panels, as was discussed above, with their super, advanced, and so forth developments, giving the consumer options, and IPS screens that can display 24-bit TrueColor; they also stay color-accurate and remain stable.

Now we will go over the downside of IPS screens, which we briefly touched on above, which includes a major disadvantage: cost. If you’re just looking for an average Smartphone or don’t need all the fancy coloring and clarity for LCD displays, then cost may not be a big factor; however, this is the main reason why IPS technology is beginning to come down. As with every new invention, discovery or technology, demand is everything. Another disadvantage is that colors may not always transcribe correctly or accurately, which may or may not be a deterrent. Also, high resolutions are not always readily available for personal applications. In certain circumstances, the brightness may not be enough, especially in darkness.

Steve Jobs said it best: “Design is not just what it looks like and feels like. Design is how it works.” I tend to agree with him. With TFT display technologies, less energy consumption is a big deal, especially when dealing with bigger screens, and of course less electricity means lower cost, overall. The visibility is sharper, meaning no geometric distortion, which is great for these tired, old eyes. The response time and physical design of the screens are also appealing. TFT displays can also save space and be placed virtually anywhere in an office or home, because of the brightly lit feature and crisp clear images.

Some cons of TFT screens deal with the viewing angle, which create distortion, resulting in a less-than-perfect image. Static resolution, meaning the resolution can’t be changed, may also cause a problem, but newer models seem to have tackled that issue. The accuracy of the display of colors is not perfect, specifically strong blacks and bright whites, so when printing an image, it may not display the spectrum of colors.

And there you have it. In the future, even this superb technology will change and new, more exciting technology will take its place. But until then, IPS & TFT screens are forging ahead with their own advances and improvements, so stayed tune. You don’t want to miss it.

Focus Display Solutions (www.FocusLCDs.com) offers off-the-shelf Color TFT display technologies in both TN and IPS. Many of the color modules contain built in touch panels.

TFT stands for thin-film transistor, which means that each pixel in the device has a thin-film transistor attached to it. Transistors are activated by electrical currents that make contact with the pixels to produce impeccable image quality on the screen. Here are some important features of TFT displays.Excellent Colour Display.Top notch colour contrast, clarity, and brightness settings that can be adjusted to accommodate specific application requirements.Extended Half-Life.TFT displays boast a much higher half-life than their LED counterparts and they also come in a variety of size configurations that can impact the device’s half-life depending on usage and other factors.TFT displays can have either resistive or capacitive touch panels.Resistive is usually the standard because it comes at a lower price point, but you can also opt for capacitive which is compatible with most modern smartphones and other devices.TFT displays offer exceptional aspect ratio control.Aspect ratio control contributes to better image clarity and quality by mapping out the number of pixels that are in the source image compared to the resolution pixels on the screen.Monitor ghosting doesn’t occur on TFT displays.This is when a moving image or object has blurry pixels following it across the screen, resembling a ghost.

TFT displays are incredibly versatile.The offer a number of different interface options that are compatible with various devices and accommodate the technical capabilities of all users.

There are two main types of TFT LCD displays:· Twisted nematic TFT LCDs are an older model. They have limited colour options and use 6 bits per each blue, red, and green channel.

In-plane switching TFT LCDs are a newer model. Originally introduced in the 1990s by Hitachi, in-plane switching TFT LCDs consist of moving liquid pixels that move in contrast or opposite the plane of the display, rather than alongside it.

Relies on backlighting to provide brightness rather than producing its own light, hence, they need built-in light emitting diodes (LEDs) in their backlighting structure

The type of TFT LCD monitor or industrial display you choose to purchase will depend on the specifications of your application or project. Here are a few important factors to consider when selecting an appropriate TFT LCD display technology:Life expectancy/battery life.Depending on the length of ongoing use and the duration of your project, you’re going to want to choose a device that can last a long time while maintaining quality usage.

Image clarity.Some TFT displays feature infrared touchscreens, while others are layered. The former is preferable, especially in poor lighting conditions or for outdoor and industrial applications, because there’s no overlay and therefore no obstructions to light emittance.

The environmental conditions make a difference in operation and image clarity. When choosing a TFT for outdoor or industrial applications, be sure to choose one that can withstand various environmental elements like dust, wind, moisture, dirt, and even sunlight.

As a leading manufacturer and distributor of high-quality digital displays in North America, Nauticomp Inc. can provide custom TFT LCD monitor solutions that are suitable for a multitude of industrial and commercial indoor and outdoor applications. Contact us today to learn more.

Rocktech Displays Limited was established in 2002 and had been committed to LCD technology with consistent concentration since then. We have two LCD factories in Shenzhen mainly focusing on TFT-LCD design, manufacture and customized total solution. We offer qualified and competitive TFT-LCD modules from 1.44" to 19", services such as the customization of FPC interface/structure, backlight structure/brightness and open frame/monitor structure, the assembly of assorted size CTP/RTP, and the design/manufacture of A/D board/Android system solution board, TN/STN/FSTN mono LCD and COG/TAB/COB mono LCM.During the past more than 14 years, Our products are very popular in dozens of countries including China, United States, Germany, France, Italy, Japan, South Korea etc., with our own brand name “Rocktech”. Via policy of “qualify first, professional technical solution, competitive price, flexibility, honest service”, Rocktech has gained a very good reputation and set up a stable industr...

From the MOSFET, the TFT was born. The TFT varies from standard MOSFETs, or bulk MOSFETs, because, as the name implies, it uses thin films. The TFT began a new era of electronics. In 1968, just six years after the first TFT development, Bernard J. Lechner of RCA shared his idea of the TFT Liquid Crystal Display (LCD), something that would boom in popularity in our modern times. The TFT LCD was then first created in 1973 at the Westinghouse Research Laboratories. These LCDs were composed of pixels controlled by transistors. In FETs, substrates were just the semiconductor material, but in manufacturing TFT LCDs, glass substrates were used so that the pixels could be displayed.

But that was not the end of TFT developments. Soon after, in 1974, T. Peter Brody, one of the developers of the TFT LCD, and Fang-Chen Luo created the first active-matrix LCD (AM LCD). An active matrix controls each pixel individually, meaning that each pixel’s respective TFT had its signal actively preserved. This opened doors to better performance and speed as displays became more complex.

Though TFTs can use a variety of materials for their semiconductor layers, silicon has become the most popular, creating the silicon-based TFT, abbreviated as Si TFT. As a semiconductor device, the TFT, as well as all FETs, use solid-state electronics, meaning that electricity flows through the structure of the semiconductor layer rather than vacuum tubes.

Due to the variety in silicon’s possible structures, the Si TFT’s characteristics can vary as well. The most common form is amorphous silicon (A-Si), which is deposited during the first step of the semiconductor fabrication process onto the substrate in low temperatures. It is most usable when hydrogenated into the form A-Si:H. This then significantly alters the properties of A-Si; without the hydrogen, the material struggles with doping (the introduction of impurities to increase mobility of charges); in the form A-Si:H, however, the semiconductor layer becomes much more photoconductive and dopable. The A-Si:H TFT was first developed in 1979 which is stable at room temperature and became the best option for AM LCDs which consequently began rising in popularity after this breakthrough.

A second potential form of silicon is the microcrystalline silicon. Though it retains a similar form to A-Si, this type of silicon also has grains of what is known as crystalline structures. Amorphous structures have a more random, less geometric shape to their network-like structures, but crystalline, on the other hand, is more structured and organized. If grown correctly, microcrystalline silicon has better electron mobility than A-Si:H and greater stability too, as it has less hydrogen within its structure. It is deposited in a similar fashion to A-Si’s deposition.

And lastly, there is polycrystalline silicon, also known as polysilicon and poly-Si. Microcrystalline silicon is the middle between A-Si and poly-Si since poly-Si’s structure is composed of many crystallites. This specific form is made by annealing the silicon material which means adding heat to alter the properties of the structure. With poly-Si, the atoms in the crystal lattice shift and move when heated, and when cooled, the structure recrystallizes.

The biggest difference between these forms, notably A-Si and poly-Si, is that charge carriers are much more mobile and the material is much more stable when it comes to using poly-Si over A-Si. When creating complicated and high-speed TFT-based displays, poly-Si’s characteristics allow for this. Yet, A-Si is still very important due to its low-leakage nature, meaning that leakage current is not lost as heavily when a dielectric insulator is not totally non-conductive.

Several years later, another development was made in 2012 in the form of indium gallium zinc oxide (IGZO) which allowed for a more powerful display in terms of refresh rates and more efficiency in terms of power consumption. This semiconducting material, as stated in the name, uses indium, gallium, zinc, and oxygen. Though it is a form of zinc oxide (ZnO), the addition of indium and gallium allows this material to be deposited in a uniform amorphous phase but also maintaining the oxide’s high carrier mobility.

As TFTs began to increase their presence in display technology, transparent semiconductors and electrodes became more appealing to the manufacturers. Indium tin oxide (ITO) is an example of a popular transparent oxide used for its appearance, good conductivity, and ease of deposition.

Research of the TFT with different materials has led to the application of threshold voltage, or how much voltage is needed to turn on the device. This value is greatly dependent on thickness and choice of the oxide. When it comes to the oxide, this relates back to the idea of leakage current. With thinner layers and certain types of oxide, the leakage current may be greater, but this in turn could lower threshold voltage, as leakage into the device will also increase. In order to tap into the TFT’s potential for low power consumption, the lower the threshold voltage, the better the device’s appeal.

Another branch of development that stemmed from the TFT is that of organic TFTs (OTFT). First created in 1986, OTFTs usually use solution-casting of polymers, or macromolecules. This device made people hesitant, as it tended to have a slow carrier mobility, meaning slow response times. However, researchers have carried out experimentation with the OTFT because it has potential to be applied to displays different from those that traditional TFTs are used for, such as flexible, plastic displays. This research still continues today. With its simpler processing than traditional silicon technology, the OTFT holds much potential for modern day and future technologies.

Apollo specializes in TFT-LCD flat panel technologies and supply chain solutions. We offer a huge selection of TFT-LCD monitors and touchscreens, as well as corresponding components. We also offer hardware and software solutions for all of our products and digital signage applications.

As a worldwide supplier of state-of-the-art TFT technologies and system solutions, Apollo Displays supports you in all project phases – 1 from construction of the metal housing and procurement of specific parts to in-house development of controller boards and touchscreen integration.

This 13.3inch capacitive touch screen is with the same size as 13.3”LCD screen, it is compatible with 1920*1080 13.3 inch TFT LCD. Above the touch screen, other covers are not suggested to being placed for better touch performance. With same pin assignment, we have another version with bigger cover glass with round corners. Other cover glass size can be customized. It can be applied to video door phone, GPS, camcorder, industrial equipment, all kinds of device, which require high quality flat panel displays, excellent visual effect. This module follows RoHS.

As a TFT LCD manufacturer, we import mother glass from brands including BOE, INNOLUX, and HANSTAR, Century etc., then cut into small size in house, to assemble with in house produced LCD backlight by semi-automatic and fully-automatic equipment. Those processes contain COF(chip-on-glass), FOG(Flex on Glass) assembling, Backlight design and production, FPC design and production. So our experienced engineers have ability to custom the characters of the TFT LCD screen according to customer demands, LCD panel shape also can custom if you can pay glass mask fee, we can custom high brightness TFT LCD, Flex cable, Interface, with touch and control board are all available.