How to Test LCD AD Display?

LCD, or liquid crystal display technology now is very popular and it has been applied to various kinds of areas. It boasts perfect image geometry and should be perfectly sharp. LCD is the monitor of choice for office and technical or CAD applications. And there are different kinds of liquid crystal display types both in domestic and international markets for your selection. For example, there are displays made from in-plane switching or IPS liquid crystal modes.
When it comes to the test of lcd ad display, there are many aspects that should be taken into your consideration actually. For example, you should test the clock or phasing for analog inputs, the inversion, cross-talk, color and viewing-angle dependence, greyscale setup, refresh rate, response time, flicker and motion-blur and so forth. These aspects are closely connected with the quality and effects of lcd ad display actually.
Let's begin with the clock or phasing for analog inputs. Generally speaking, the symptoms of incorrect or wrong clock/phase settings include blurry or shimmering text and shimmering on fine crosshatch patterns. You are advised to wait for 5-10 minutes for the monitor to warm up before your test actually.
It is very difficult to get exactly the same voltage on the cell in both polarities, hence the pixel-cell brightness will tend to flicker to some extent at half the frame-rate actually. It is only the magnitude of the applied voltage which determines the light transmission. The polarity of the cell voltage is reversed on alternate video frames to prevent polarisation of the liquid crystal material. The flicker would be highly objectionable if the polarity of the whole screen were inverted at once. Some diagonal cross-hatch patterns used for shading by CAD programs can interact with inversion and cause objectionable flicker on some lcd monitors.
Also, there are also other aspects that should be tested respectively, like the refresh rate, response time and flicker and motion-blur and the color etc. You are advised to test it carefully and learn more about the test measures. Diagnosing your display in time can help prolong its lifespan actually.
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