why are touch screen monitors so expensive made in china

2023-01-03 12:32:11

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why are touch screen monitors so expensive made in china

Science fiction has always served as a window into a potential future, namely in the way of technology. But what was once regulated to episodes of Star Trek is quickly becoming the stuff of reality. Many fixtures of these kinds of shows and books have begun to inspire real-life counterparts, including - but not limited to - touchscreen technology.

One only has to look at how far cell phones have come since their inception. Physical keyboards, like those from BlackBerry, gave people about as much of a solution as is possible for those who found themselves doing more on the devices as they became more advanced. Where tactile options came up short, touchscreens graciously stepped up to bat, providing a much fuller experience. This kind of functionality then spread to tablets, which are considered by many to be rivals of laptops and even standard PCs.

While there are still some things that are best done on a desktop computer, that does not change the fact that many users find themselves longing for the same abilities on their PCs afforded by many of their mobile devices. This is what helped breed the touchscreen monitor market, which has many viable options for people seeking the best of both worlds. With stronger computing power and a finer ability to control actions occurring in the screen, users can get more work done in new and exciting ways.

Traditionally, computer mice are what have allowed us to "touch" in a virtual context, but touchscreen monitors are changing all that. It might be said that the reason that mice were used in the first place was because the technology had not evolved to a responsive enough level to enable that natural solution. Now that people have the touchscreen technology, they want it everywhere.

If one thing is for certain, it is that the burgeoning adoption of touchscreen technology is no fad. Proliferation has already come too far to turn back now, and computer manufacturers are taking notice. Everyone is trying to get a piece of the action, including ELO Touch Solutions, Laiputuo Electronics, Planar, HP, 3M, Touch Systems, ViewSonic, Dell and ACER as well. Getting into the touchscreen monitor game is a no-brainer for the companies involved in this generation of computing. With so many different applications made for touchscreen monitors, options exist for all sorts of interested parties.

Touchscreen monitors are becoming the new standard in both private and enterprise settings. Here are some of the ways they can be leveraged effectively for business: touchscreen monitors for workstations, touchscreen monitors for hospitals, and touchscreen monitors for POS systems.

Newegg offers a large selection of touchscreen monitors which vary according to the type from 5-wire Resistive touchscreen monitors, and Accu Touch touchscreen monitors, to Capacitive touchscreen monitors, and more. Newegg’s wide selections will definitely meet your needs.

why are touch screen monitors so expensive made in china

--Stable running in shock and vibration application, as well as electromagnetic interference and radiation enviroment. --Sealed bezel and True flat are more efficient for water resistance. --Stable running in shock and vibration application, as well as electromagnetic interference and radiation enviroment.

why are touch screen monitors so expensive made in china

Working with a laptop computer can be a challenge—especially if you need to multitask with multiple windows open once. But when you’re on-the-go, it isn’t practical to lug around a full-size monitor. This is where portable monitors come in: This is where portable monitors come in: These lightweight, external second screens go where your laptop goes. The best portable monitors can increase your available screen real estate, which can improve your productivity without requiring the same weight or bulk as a dedicated monitor.

“Portable monitors are mainly aimed at business travelers looking for enhanced productivity while on the road,” notes Paul Gagnon, vice president and industry advisor on consumer technology at research firm The NPD Group. “But they can also have utility for hybrid workers or students not looking to invest in a dedicated home office setup for space or financial reasons.”

Portable monitors typically come in sizes that pair well with laptop computers—14 to 17 inches—and typically offer a baseline resolution of 1080 pixels. The larger you go in screen size or the more screens you add, the heavier your remote work setup will be. Some monitors stand apart with 2K or 4K resolution—like our best overall pick, the SideTrack Solo 4K 15.6-Inch—while others have a touchscreen display, a fast refresh rate, built-in speakers or some combination of all four.

No matter which flavor of portable monitor you choose, these handy devices can help you do more in less space—wherever you may be. To guide you in your search, we’ve done the testing and research to narrow down the best portable monitors available right now.

The SideTrak Solo is a free-standing portable monitor, unlike most other models from this company that attach to your computer screen. The Solo is among the priciest models we’ve seen, but it also packs all the features you could want in a monitor—with 4K resolution, a touchscreen and built-in speakers. It connects to your computer using a single cable and also has a built in blue light filter to help reduce eyestrain.

With high dynamic range (HDR), dynamic contrast ratio (DCR) and AMD FreeSync modes, you can switch seamlessly from business to watching movies or gaming—and see everything with rich, vivid colors and detailed clarity. You can even connect this monitor to a console games, like Sony PlayStation or Microsoft Xbox, in addition to any computer, smartphone or tablet. All of this comes in a package that weighs 2.9 pounds—which is about the same as some lightweight laptops.

For less than $200, you can easily connect this Lepow C2S portable monitor to your laptop computer and benefit from an additional 15.4-inch screen. You get 1080p resolution with a 60Hz refresh rate in a 1.7-pound package. The display uses an integrated and adjustable-angle kickstand so you can position it horizontally or vertically. The monitor has multiple inputs, with USB Type-C, Mini-HDMI and Mini-DisplayPort, plus a second USB Type-C port for power.

It has a 178-degree viewing angle, wide enough so you can sit off center from the monitor and still clearly see the screen. The monitor has three modes: extend, duplicate and second screen. The dual built-in speakers produce stereo sound, and it has a 3.5mm audio jack for connecting headphones.

The Newsoul MDS-15608 monitor comes in at a budget price, one of the lowest we’ve seen for a model with multiple inputs. It displays content at 1,920 x 1,080 pixels, with a refresh rate of 60Hz and a 16:9 aspect ratio. This highly affordable monitor comes with a wall mount and a foldable screen cover which doubles as a stand for either horizontal or vertical use. The screen has a 178-degree viewing angle, making it useful for sharing what’s displayed on your screen with others—like a PowerPoint presentation.

The monitor connects to the laptop using a USB Type-C port for both power and imaging. It also has a second USB Type-C port and an OTG Micro-USB port for connecting additional peripherals. Its dual stereo speakers deliver 360-degree spatial audio, unusual for such a compact unit.

The Lenovo ThinkVision 14-inch portable monitor comes in at 1.3 pounds, so you can easily take it just about anywhere your remote work life takes you without adding a ton of extra weight to your bag. This model has 1,920 x 1,080 pixel resolution, with a 60Hz refresh rate and a 6ms response time.

Its 16:9 aspect ratio LED screen has an anti-glare coating to help with eyestrain. You also get a 178-degree viewing angle. The monitor’s brightness can reach a reasonably bright 300 nits, which makes it easier to use in ambient light. Built into the base are two USB 3.1 Type-C ports for connecting to your laptop and power. And it comes with a protective sleeve, so you can comfortably toss the monitor into your bag when on-the-go.

All portable monitors are, by definition, easy to tote around. But this Dell 14 Portable Monitor C1422H takes portability to the next level. At a mere 1.3 pounds, it won’t add much weight to your travel bag. And at 14-inches, it pairs well with most 13- to 15.6-inch laptops, without adding the extra heft and bulk of a larger 15.6-inch portable monitor.

This screen also has a maximum brightness of 300 nits, brighter than some laptops and other portable monitors. To help prevent eyestrain, it has blue-light reduction built in. Without speakers or lots of ports, though, this monitor is all business—making it good for work, but not play. It has just two USB Type-C ports, one on each side of the monitor’s adjustable base.

The Asus ZenScreen MB16AMT 15.6-inch display sets itself apart by having a built-in rechargeable battery inside its slim, two-pound chassis. This monitor offers 1,920 x 1,080 resolution at a 60Hz refresh rate and a 16:9 aspect ratio. It also has two 1W internal speakers for stereo sound. The 7800mAh battery lasts for up to four hours per charge.

The monitor adapts automatically to horizontal or vertical orientation. Its touchscreen works with Windows, Android and Chrome OS. The certified flicker-free backlit screen also has blue light filtering. Together, these features work to mitigate eye fatigue. The included Smart Case protects the screen during transport. It folds out to create a multi-position tabletop stand.

The ViewSonic TD1655 is a 15.6-inch touchscreen portable monitor at one of the best prices of any similar model from major manufacturers. This pick is also one of the few touchscreen monitors to work with both Macs and PCs—thanks to ViewSonic’s vTouch driver. This driver enables full touch and gesture control on the display when paired with macOS Big Sur, Catalina, Monterey or Ventura running on Intel, M1 or M2 chips. The touchscreen works without the driver on Windows 10 or newer computers with USB Type-C connectivity.

The TD1655 has a 16:9 aspect ratio and comes with a screen cover and a built-in stand to use in either horizontal or vertical orientation. It also comes with a passive stylus for use on the in-cell capacitive LED touchscreen. The screen is flicker-free—with a blue light filter to reduce eyestrain. And it packs two 0.8-watt speakers, plus an impressive 250 nits of brightness.

Australian start-up Espresso Displays’ eponymous V2 model comes in 13- and 15.6-inch versions with a touchscreen, along with a 13-inch version without touch. Espresso’s prices are a bit more than some competitors, but all models share the same stylish design aesthetic, plus a bevy of features other portable monitors don’t have. Take the 15.6-inch touchscreen portable monitor, for example. It has a brushed aluminum and glass chassis and a super-slim (0.2-inch) design, with a 16:10 aspect ratio display and two USB Type-C ports. The maximum screen brightness is 300 nits.

This model works with a pressure-sensitive stylus, though the tool doesn’t come with monitor and costs an extra $79. However, the stylus supports 4,096 levels of pressure sensitivity and closely mimics the feel of pen and pencil—making this a great choice for drawing or writing on screen. Other optional accessories include a choice of stands, the coolest one being the espressoStand, a $69 foldable magnetic stand for mounting the monitor for vertical or horizontal viewing. Last but not least, this pick is versatile. The Espresso comes with its own software, called Duet, allowing you to use the touchscreen on both Mac and PC laptops.

While this 12.5-inch monitor is a smaller-size display than most, the SideTrak Swivel mounts directly to your laptop’s display with a magnetic frame. It then pulls out from behind the screen when needed. This approach makes it extremely easy to transport and ensures both displays are at the same height. You can manually adjust the SideTrak’s viewing angle, or you can rotate the monitor 360 degrees. If you’re looking for some detachment, the Swivel’s collapsible mounting frame also allows the monitor to stand on its own using a built-in kickstand.

This version of the SideTrak Swivel Portable Monitor is compatible with Windows or Mac laptops, with a built-in display between 13 inches and 17 inches. It is not, however, compatible with Microsoft Surface devices that have their own kickstand, or with many 2-in-1 laptops whose screens contort into different positions. The 16:9 monitor’s refresh rate is 50Hz (most portable monitors are at 60Hz), but its brightness is higher than others, at a maximum of 300 nits. The unit comes with the mounting plates needed to attach securely it to your computer.

The Xebec Tri-Screen 2 uses a mounting frame to attach two slide-out 10.1-inch displays to the back of your laptop’s existing screen. Each Xebec display slides out from behind your laptop—one on each side of your laptop’s display—thus creating a highly portable three-display work area. Installing these two monitors and its bracket requires the supplied frame clamps, but nothing extra, like magnets or glue.

Each 16:10 aspect ratio display measures 6.5 millimeters thick, with 1920 x 1200 resolution at 60-hertz refresh rate. And each monitor can rotate 180 degrees. This setup is compatible with all Windows PCs, Macs and ChromeOS-based computers, yet it only adds two pounds to what you need to carry around. Overall, this is an extremely useful design that’ll dramatically boost your productivity when working (or playing) remotely. It’s well worth the investment.

The ASUS ROG Strix 17.3-inch portable monitor has an impressive 300 nits of brightness, higher than most competitors. It also has fast 240Hz refresh rate, a 3ms response time and adaptive-sync support, which translates into fluid graphics and animations during gameplay.

The ViewSonic VX1755 targets gamers who need portability and speed. This 17.2-inch display carries 1080p resolution, and it has a fast 144Hz refresh rate and AMD FreeSync Premium support to help gameplay look buttery smooth. It also has an anti-glare and flicker-free screen with a built-in blue light filter.

The viewing angle is good, but not as wide as some at 170-degrees. This monitor comes with a built-in stand that doubles as a cover. You have two USB Type-C ports to work with, plus two-way power over a single cable so the laptop can power the monitor. At 2.2 pounds, this monitor weighs only a little more than some smaller 15.6-inch models.

The Arzopa G1 portable monitor is a solid choice for gamers watching their budget. The G1 packs a fast 144Hz refresh rate, which translates into smooth and artifact-free animations and gameplay. It lets you choose to display content in either a 16:9 or 4:3 aspect ratio, and it supports 100% of the sRGB color gamut, displaying 16.7 million colors at 1,920 x 1,080-pixel resolution.

Also of note: This monitor is incredibly lightweight at just 1.4 pounds and thin (a mere 0.4-inches), making it an ideal add-on to your mobile kit. Overall, it’s a superb value for less than $200.

If you’re using a 17.3-inch portable monitor for productivity, a 2K resolution display offers an excellent compromise, with sharper text and more detailed images than you’d get from a standard 1080p monitor. This Bimawen BN7S monitor has a 60Hz refresh rate and 16:9 aspect ratio, as well as blue light reduction to make staring at the monitor easier on your eyes. The monitor supports 100% of the sRGB color gamut.

It comes with a convenient magnetic Smart Cover which doubles as an adjustable stand. Thanks to the 178-degree field of view, multiple people will have no trouble viewing the monitor at the same time—even if they’re looking at it from an angle. It’s heavier than most portable monitors, listed at 4.8 pounds.

Consider the overall size and weight of the monitor, especially if you expect to carry it along with your laptop when on the road. Smaller screen sizes are lighter than larger ones, by nature. An attached monitor may make sense, given its small size and light weight. It also conveniently attaches to your laptop’s screen, so you can carry everything as one unit.

As a secondary monitor used for multitasking, you may find a smaller size display will accommodate your work habits and need for extra portability. Meanwhile, if your work requires photo editing, writing, drawing or annotating, choosing a second monitor with a touchscreen display will be likely be beneficial.

Many portable monitors rely on your laptop’s power, unless they come with their own built-in battery. Some monitors have a second USB Type-C port, through which you can attach your own power source. If you’re using a monitor powered by your laptop, then expect your laptop’s battery charge to run low faster. And the monitor will drain power faster still if it’s 4K, since higher resolution displays require more power. Power might be one reason brightness suffers on a portable monitor, so we advise to look for monitors with an LED backlight for a brighter display that’s usable in a well-lit environment.

This is display panel technology used by monitors to produce better colors and widen the display’s effective viewing angle. Especially if you"ll be playing games, viewing graphic or video-based content, or working with high-resolution digital images, look for a monitor that uses IPS. Beware lower-cost models that use less capable display technologies.

While some portable monitors have two tiny, low-powered speakers built-in, chances are the speakers built into your computer offer higher-quality audio. For the best audio experience, consider using headphones or wireless earbuds with noise cancellation, as opposed to relying on the audio that some of these portable monitors can generate. Check out our picks for the best wireless headphones and earbuds.

In general, larger displays cost more. Higher resolution and faster refresh rates also add to the price of a portable monitor. Well-known brand names—like ViewSonic, ASUS, Lenovo or Dell—carry a small premium over some of the generic models you can find at Amazon and other e-tailers.

All non-touchscreen portable monitors can work with a Mac or a PC. Some models can work with other operating systems, such as ChromeOS or Linux, so double check the specs if you want to use the monitor with one of those operating systems.

Touchscreen portable monitors are trickier. All have Windows support, but only some support additional operating systems—including MacOS, ChromeOS and Android. If you want to use the monitor with a Mac, look specifically for monitors with a dedicated driver or software to enable touch. ViewSonic, Espresso and SideTrak all come with some variation of Mac software.Use your Apple iPad as a second screen for your MacBook or iMac thanks to the SideCar feature.Apple

If you’re a MacBook (or iMac) user and have an iPad tablet, the latest MacOS and iPadOS operating systems have a Sidecar feature, so you can use your iPad tablet as a second monitor for your computer—either with or without a cable.

Portable monitors are small, compact and lightweight computer screens designed to be connected to your laptop computer to expand the on-screen real estate available to run your favorite applications. A portable monitor makes multitasking on a laptop computer much easier and more efficient.

Most portable monitors rely on your laptop computer’s battery power to function—requiring just one cable to link it with your computer. This option will reduce your laptop computer’s battery life between charges. However, some portable monitors have their own built-in rechargeable battery. All are easy to transport and can likely fit within your existing laptop case, briefcase, or carry-on bag.

The best portable monitors come in a wide range of sizes. The size you choose is a matter of personal preference and should be based on your work habits and needs, as well as how much you want to spend.The SideTrak portable monitor attaches to the back of your laptop computer"s existing screen and ... [+]provides a second screen.SideTrak

Some portable monitors are extremely compact and provide an extra 12- to 14-inch display, although it’s more common for a portable monitor to offer at least a 15.6-inch display. A few displays go up to just over 17 inches. Displays larger still are more cumbersome to travel with and typically need to be plugged into an electrical outlet to function, making them less portable and more like a smaller desktop monitor.

As for thickness, most portable monitors are less than 0.5 inches and the monitors themselves weigh less than two pounds. Most come with a travel case or cover—making them very easy to transport with your laptop computer. Of course, this varies based on the screen size and model you choose.

Yes. Portable monitors typically include some cables, such as a USB Type-C to USB Type-C cable, a Mini-HDMI to HDMI cable and a USB Type-C to USB Type-A cable. As soon as you plug a portable monitor into your computer, Windows or Mac identifies it as a display and it should work immediately. In some cases, however, you may need to download a free driver or adjust the System Display Settings (Windows) or Display System Preferences (Mac) on your computer for the portable monitor to function properly.

With the proper drivers installed, almost any portable monitor will work with almost any Windows PC or MacOS-based laptop computer. For the best user experience, position the additional monitor directly to the side of your laptop computer’s existing monitor, making sure they’re both at the same height. Or, choose a vertical portrait orientation, so you can see a document in a longer length, just as you can on a tablet.

A portable monitor adds screen real estate, either doubling or tripling your screens (if you get a multi-screen model as from Xebec). This makes multitasking much easier, and it allows you to view multiple applications at once. The extra screen space can help if you have a laptop with a smaller display, such as a 13-inch ultraportable laptop.

It all comes down to what you use your computer for, whether being able to multitask is important to you and how much physical space you have to set up your equipment on a desk or flat surface. Most people discover that having two or even three screens can be extremely beneficial for increasing their productivity and making their workflow easier. This is a must-have accessory if you’re a remote worker who need to be highly productive from airports, hotels, or even coffee shops. However, not everyone needs a 4K resolution portable monitor or one that’s 15-inches or larger. You’ll typically save money going with a smaller display that offers 1080p resolution.

why are touch screen monitors so expensive made in china

This is mainly because China has a large population, about the same as the rest of the developed world put together, but it has not yet developed to the point where services account for a large proportion. Because China has a large population and a large number of employed people, labor is cheaper than in other countries. Foreign enterprises can take advantage of China’s labor force by putting their products into production in China, which not only increases the employment rate of Chinese people but also saves a lot of costs in the production of products. Therefore, made in China is so popular.

A guy on Quora mentions that”If you import a lot of raw Material from broad, it will cost a lot of money, but China has a very special weapon: infrastructure. Since the demand for products (mostly commodities) drives demand for raw material, that drives demand for infrastructure to route these raw materials effectively and cheaply. Unlike India, China has that infrastructure and system, and so raw material can flow in large batches and routed effectively to minimize cost.”

It is also true that in the eyes of foreign companies, Chinese products in almost any field can be produced. China’s development in the production field in recent years is very comprehensive, including raw materials, production, logistics, trade, and other supporting industrial chains, which can be said to be very complete. Therefore, foreign enterprises can find a complete industrial chain in a very short time when they come to China, so the reputation of Chinese manufacturing is also very good.

When it comes to cheap Labour, it is much cheaper in south-east Asia than in China. But why is China so popular? This involves the quality of the product. The reason why the labor force in many countries in southeast Asia is cheap is mainly that the economic level of these countries is not high, so no matter the production technology or technological level is inferior to China. To ensure the quality of their products, foreign companies naturally prefer to choose China.

In terms of product production efficiency, China is hard to compare with many other countries. According to relevant data, domestic product manufacturing efficiency is the highest in the world. On the one hand, this is because China’s factories have more comprehensive equipment and a high level of science and technology, which can shorten the production cycle of products. On the other hand, it is because of the high quality of Chinese workers, strong learning ability, and developed transportation, which also speeds up the operation of all aspects of product production.

In order to export more products to other parts of the world, the Chinese government has only a VAT system and only taxes value-added services. As a result, production costs are much cheaper than in other countries. On the other hand, the United States and some other developed countries do not impose low import tariffs on Chinese goods.

why are touch screen monitors so expensive made in china

Optical touchscreens use cameras that continuously scan the touchscreen. When an object comes into contact with the touchscreen, some of the light is blocked and the location of the contact is then calculated by using information from both sensors and mathematical triangulation.

• Optical touchscreens have high transmittance, and because they use optical sensors, can be operated by both conductive and non-conductive materials.

why are touch screen monitors so expensive made in china

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why are touch screen monitors so expensive made in china

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why are touch screen monitors so expensive made in china

Touch panel technologies are a key theme in current digital devices, including smartphones, slate devices like the iPad, the screens on the backs of digital cameras, the Nintendo DS, and Windows 7 devices. The term touch panel encompasses various technologies for sensing the touch of a finger or stylus. In this session, we"ll look at basic touch panel sensing methods and introduce the characteristics and optimal applications of each.

Note: Below is the translation from the Japanese of the ITmedia article "How Can a Screen Sense Touch? A Basic Understanding of Touch Panels"published September 27, 2010. Copyright 2011 ITmedia Inc. All Rights Reserved.

A touch panel is a piece of equipment that lets users interact with a computer by touching the screen directly. Incorporating features into the monitor like sensors that detect touch actions makes it possible to issue instructions to a computer by having it sense the position of a finger or stylus. Essentially, it becomes a device fusing the two functions of display and input.

It"s perhaps not something we think of often, but touch panels have integrated themselves into every aspect of our lives. People who enjoy using digital devices like smartphones interact with touch panels all the time in everyday life—but so do others, at devices like bank ATMs, ticket vending machines in railway stations, electronic kiosks inside convenience stores, digital photo printers at mass merchandisers, library information terminals, photocopiers, and car navigation systems.

A major factor driving the spread of touch panels is the benefits they offer in the way of intuitive operation. Since they can be used for input through direct contact with icons and buttons, they"re easy to understand and easily used, even by people unaccustomed to using computers. Touch panels also contribute to miniaturization and simplification of devices by combining display and input into a single piece of equipment. Since touch panel buttons are software, not hardware, their interfaces are easily changed through software.

While a touch panel requires a wide range of characteristics, including display visibility above all, along with precision in position sensing, rapid response to input, durability, and installation costs, their characteristics differ greatly depending on the methods used to sense touch input. Some typical touch-panel sensing methods are discussed below.

As of 2010, resistive film represented the most widely used sensing method in the touch panel market. Touch panels based on this method are called pressure-sensitive or analog-resistive film touch panels. In addition to standalone LCD monitors, this technology is used in a wide range of small to mid-sized devices, including smartphones, mobile phones, PDAs, car navigation systems, and the Nintendo DS.

With this method, the position on screen contacted by a finger, stylus, or other object is detected using changes in pressure. The monitor features a simple internal structure: a glass screen and a film screen separated by a narrow gap, each with a transparent electrode film (electrode layer) attached. Pressing the surface of the screen presses the electrodes in the film and the glass to come into contact, resulting in the flow of electrical current. The point of contact is identified by detecting this change in voltage.

The advantages of this system include the low-cost manufacture, thanks to its simple structure. The system also uses less electricity than other methods, and the resulting configurations are strongly resistant to dust and water since the surface is covered in film. Since input involves pressure applied to the film, it can be used for input not just with bare fingers, but even when wearing gloves or using a stylus. These screens can also be used to input handwritten text.

Drawbacks include lower light transmittance (reduced display quality) due to the film and two electrode layers; relatively lower durability and shock resistance; and reduced precision of detection with larger screen sizes. (Precision can be maintained in other ways—for example, splitting the screen into multiple areas for detection.)

Capacitive touch panels represent the second most widely used sensing method after resistive film touch panels. Corresponding to the terms used for the above analog resistive touch panels, these also are called analog capacitive touch panels. Aside from standalone LCD monitors, these are often used in the same devices with resistive film touch panels, such as smartphones and mobile phones.

With this method, the point at which the touch occurs is identified using sensors to sense minor changes in electrical current generated by contact with a finger or changes in electrostatic capacity (load). Since the sensors react to the static electrical capacity of the human body when a finger approaches the screen, they also can be operated in a manner similar to moving a pointer within an area touched on screen.

Two types of touch panels use this method: surface capacitive touch panels and projective capacitive touch panels. The internal structures differ between the two types.

Surface capacitive touch panels are often used in relatively large panels. Inside these panels, a transparent electrode film (electrode layer) is placed atop a glass substrate, covered by a protective cover. Electric voltage is applied to electrodes positioned in the four corners of the glass substrate, generating a uniform low-voltage electrical field across the entire panel. The coordinates of the position at which the finger touches the screen are identified by measuring the resulting changes in electrostatic capacity at the four corners of the panel.

While this type of capacitive touch panel has a simpler structure than a projected capacitive touch panel and for this reason offers lower cost, it is structurally difficult to detect contact at two or more points at the same time (multi-touch).

Projected capacitive touch panels are often used for smaller screen sizes than surface capacitive touch panels. They"ve attracted significant attention in mobile devices. The iPhone, iPod Touch, and iPad use this method to achieve high-precision multi-touch functionality and high response speed.

The internal structure of these touch panels consists of a substrate incorporating an IC chip for processing computations, over which is a layer of numerous transparent electrodes is positioned in specific patterns. The surface is covered with an insulating glass or plastic cover. When a finger approaches the surface, electrostatic capacity among multiple electrodes changes simultaneously, and the position were contact occurs can be identified precisely by measuring the ratios between these electrical currents.

A unique characteristic of a projected capacitive touch panel is the fact that the large number of electrodes enables accurate detection of contact at multiple points (multi-touch). However, the projected capacitive touch panels featuring indium-tin-oxide (ITO) found in smartphones and similar devices are poorly suited for use in large screens, since increased screen size results in increased resistance (i.e., slower transmission of electrical current), increasing the amount of error and noise in detecting the points touched.

Larger touch panels use center-wire projected capacitive touch panels in which very thin electrical wires are laid out in a grid as a transparent electrode layer. While lower resistance makes center-wire projected capacitive touch panels highly sensitive, they are less suited to mass production than ITO etching.

Above, we"ve summarized the differences between the two types of capacitive touch panels. The overall characteristics of such panels include the fact that unlike resistive film touch panels, they do not respond to touch by clothing or standard styli. They feature strong resistance to dust and water drops and high durability and scratch resistance. In addition, their light transmittance is higher, as compared to resistive film touch panels.

On the other hand, these touch panels require either a finger or a special stylus. They cannot be operated while wearing gloves, and they are susceptible to the effects of nearby metal structures.

Surface acoustic wave (SAW) touch panels were developed mainly to address the drawbacks of low light transmittance in resistive film touch panels—that is, to achieve bright touch panels with high levels of visibility. These are also called surface wave or acoustic wave touch panels. Aside from standalone LCD monitors, these are widely used in public spaces, in devices like point-of-sale terminals, ATMs, and electronic kiosks.

These panels detect the screen position where contact occurs with a finger or other object using the attenuation in ultrasound elastic waves on the surface. The internal structure of these panels is designed so that multiple piezoelectric transducers arranged in the corners of a glass substrate transmit ultrasound surface elastic waves as vibrations in the panel surface, which are received by transducers installed opposite the transmitting ones. When the screen is touched, ultrasound waves are absorbed and attenuated by the finger or other object. The location is identified by detecting these changes. Naturally, the user does not feel these vibrations when touching the screen. These panels offer high ease of use.

The strengths of this type of touch panel include high light transmittance and superior visibility, since the structure requires no film or transparent electrodes on the screen. Additionally, the surface glass provides better durability and scratch resistance than a capacitive touch panel. Another advantage is that even if the surface does somehow become scratched, the panel remains sensitive to touch. (On a capacitive touch panel, surface scratches can sometimes interrupt signals.) Structurally, this type of panel ensures high stability and long service life, free of changes over time or deviations in position.

Weak points include compatibility with only fingers and soft objects (such as gloves) that absorb ultrasound surface elastic waves. These panels require special-purpose styluses and may react to substances like water drops or small insects on the panel.

All in all, however, these touch panels offer relatively few drawbacks. Recent developments such as improvements in manufacturing technology are also improving their cost-performance.

The category of optical touch panels includes multiple sensing methods. The number of products employing infrared optical imaging touch panels based on infrared image sensors to sense position through triangulation has grown in recent years, chiefly among larger panels.

A touch panel in this category features one infrared LED each at the left and right ends of the top of the panel, along with an image sensor (camera). Retroreflective tape that reflects incident light along the axis of incidence is affixed along the remaining left, right, and bottom sides. When a finger or other object touches the screen, the image sensor captures the shadows formed when the infrared light is blocked. The coordinates of the location of contact are derived by triangulation.

While this type differs somewhat from the above touch panels, let"s touch on the subject of electromagnetic induction touch panels. This method is used in devices like LCD graphics tablets, tablet PCs, and purikura photo sticker booths.

This input method for graphics tablets, which originally did not feature monitors, achieves high-precision touch panels by combining a sensor with the LCD panel. When the user touches the screen with a special-purpose stylus that generates a magnetic field, sensors on the panel receive the electromagnetic energy and use it to sense the position of the pen.

Since a special-purpose stylus is used for input, input using a finger or a general-purpose stylus is not possible, and the method has limited applications. Still, this has both good and bad points. It eliminates input errors due to the surrounding environment or unintended screen manipulation. Since the technology was intended for use in graphics tablets, it offers superior sensor precision—making it possible, for example, to change line width smoothly by precisely sensing the pressure with which the stylus is pressed against the screen (electrostatic capacity). This design approach also gives the screen high light transmittance and durability.

The table below summarizes the characteristics of the touch panels we"ve looked at. Keep in mind that even in devices based on the same sensing method, performance and functions can vary widely in the actual products. Use this information only as an introduction to general product characteristics. Additionally, given daily advances in touch-panel technological innovations and cost reductions, the information below is only a snapshot of current trends as of September 2010.

Each touch-panel type offers its own strengths and weaknesses. No single sensing method currently offers overwhelming superiority in all aspects. Choose a product after considering the intended use and environmental factors.

why are touch screen monitors so expensive made in china

In recent time, China domestic companies like BOE have overtaken LCD manufacturers from Korea and Japan. For the first three quarters of 2020, China LCD companies shipped 97.01 million square meters TFT LCD. And China"s LCD display manufacturers expect to grab 70% global LCD panel shipments very soon.

BOE started LCD manufacturing in 1994, and has grown into the largest LCD manufacturers in the world. Who has the 1st generation 10.5 TFT LCD production line. BOE"s LCD products are widely used in areas like TV, monitor, mobile phone, laptop computer etc.

TianMa Microelectronics is a professional LCD and LCM manufacturer. The company owns generation 4.5 TFT LCD production lines, mainly focuses on making medium to small size LCD product. TianMa works on consult, design and manufacturing of LCD display. Its LCDs are used in medical, instrument, telecommunication and auto industries.

TCL CSOT (TCL China Star Optoelectronics Technology Co., Ltd), established in November, 2009. TCL has six LCD panel production lines commissioned, providing panels and modules for TV and mobile products. The products range from large, small & medium display panel and touch modules.

Established in 1996, Topway is a high-tech enterprise specializing in the design and manufacturing of industrial LCD module. Topway"s TFT LCD displays are known worldwide for their flexible use, reliable quality and reliable support. More than 20 years expertise coupled with longevity of LCD modules make Topway a trustworthy partner for decades. CMRC (market research institution belonged to Statistics China before) named Topway one of the top 10 LCD manufactures in China.

Founded in 2006, K&D Technology makes TFT-LCM, touch screen, finger print recognition and backlight. Its products are used in smart phone, tablet computer, laptop computer and so on.

The Company engages in the R&D, manufacturing, and sale of LCD panels. It offers LCD panels for notebook computers, desktop computer monitors, LCD TV sets, vehicle-mounted IPC, consumer electronics products, mobile devices, tablet PCs, desktop PCs, and industrial displays.

In Topway, we work side by side to help you overcome any technical and none technical challenges that may arise during product design, manufacture or installation. We can even take care of component sourcing and manufacturing for you.

why are touch screen monitors so expensive made in china

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