Machine Lcd
LCD can only support so-called real resolution
Touch LCD Monitor from a positive point of view, with no significant difference between normal display, view from behind, then more than ordinary display a signal line, that is, the signal line connecting the touch screen. Ordinary display when in use, generally do not need special drivers, while the touch screen when in use, you must have a dedicated touch screen driver, otherwise it can not touch the operation of Rights.
Basically, the international famous brands 3M, ELO, GVision, etc., but the price is relatively high; country is the quality a bit weak, but the price is relatively LCD flat Panel Monitor low, but the whole, fairly decent, such as the domestic Chinese and other advantages of the HY-TOUCH, if the pursuit of High Quality, but cost-effective if the domestic brand is a good choice!
First as a professional touch LCD monitor manufacturers, the overall mold and institutional design, the layout of electronic components, touch screens are a unique way of fixed, take GVision products, in addition to their own development and design of the A / D board, the design of the whole body, but also for the touch screen fixed to do a professional design, unique design with several pieces of iron as a fixed, rather than simply be fixed with tape and paste. Second, the professional touch screen, the general reserve a degree of installation space, you can install other touch-screen compatible. Third, the professional touch screen work more stable, not only Contacts precise contact with another touch, the display machine will not shake, more stable. Fourth, the touch screen machine of quality assurance. so overall performance is more reliable. This touch display more general application in the high-end and demanding local touch display, such as high-end restaurant POS systems, industrial scene, the medical system, conference room and so on.
The first thing to do is carefully check if there computer peripheral sources of electromagnetic interference, and then replace a graphics card, or receipt of another computer monitor, video card itself does not confirm the problem, and then adjust the refresh rate. If you exclude the above reasons, it is possible that the quality of the LCD monitor problem, such as the thermal stability of the bad issues. There is a liquid crystal display water ripple of the more common quality problems, they can not solve, the proposed replacement or repair as soon as possible.
Because LCD and CRT monitors display different principle, it belongs to a direct one correspondence of pixels displayed. Work under the best resolution of the LCD to display graphics output of the analog signal through the processing, transformation to the specific address information (the pixels on the screen of the absolute address) of the display signal, and then into the LCD panel, directly to the display signal added to the corresponding pixel on the drive pipe, some with memory addressing and write similar. So LCD screen resolution is not arbitrarily set, but the traditional CRT monitors support for the resolution of the more flexible. LCD can only support so-called "real resolution", and only real resolutions to show the best image. When set to true resolution other than resolution, generally by increasing or reducing the scope screen, display remains the same, more than some of the black handle. Such as liquid crystal displays working in low resolution 800 * 600 when the pixel if the display is still one correspondence with the display, then it can only screen in the center of the screen narrow the center of that 800 * 600 pixels to display, although picture is still clear, but the display area is too small, not only feel uncomfortable but also for expensive liquid crystal display panel is a tremendous waste. Another interpolation method can also be used, whatever remains full screen resolutions, but this time displayed is compromised. In addition, LCD refresh rate settings and the picture quality to a certain extent. Friends according to their actual situation may be appropriate to set the refresh rate, normally set to 60Hz or better.
Three shortcomings: LCD brightness and contrast are not very good. As the liquid crystal molecules are neither light, therefore, need to rely on external light source LCD auxiliary light. In general, 140 lumens per square meter is enough. Some manufacturers standards and practical standards for the parameters there is a gap.
Disadvantage 4: LCD "dead pixels" problem. LCD glass commonly used materials, it is easy to break, plus each pixel is very small, often result in broken behavior of individual TFT Monitor pixels, commonly known as "dead pixels", which is beyond repair, only replace the entire display screen, while the price is often very expensive to replace.
Five shortcomings: a limited lifespan. Unlike ordinary LCD display so durable. Two to three years is generally considered the normal life span, and thus to consider when buying two or three years is willing to replace the display again.
In general, the traditional CRT displays in color and fast image display and other advantages are obvious, while the LCD in the form and no radiation, no flicker of the advantages are very outstanding. Turnip cabbage all have love, in the end what kind of display products to buy, must according to your specific needs to be.
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In general, the traditional CRT displays in color and fast image display and other advantages are obvious, while the Philips LCD Monitor in the form and no radiation, no flicker of the advantages are very outstanding. Turnip cabbage all have love, in the end what kind of display products to buy, must according to your specific needs to be.
4.3 inch LCD Order machine on Samsung ARM11(S3C6431)@667MHz
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