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We always follow the principle "Quality Very first, Prestige Supreme". We have been fully committed to delivering our customers with competitively priced high-quality products and solutions, prompt delivery and experienced services for 3.99 inch bar lcd touch screen,3.99 inch Long Strip tft display RGB,3.99 inch Long Strip lcd display 400*960,3.99 inch Long Strip tft lcd 400*960,3.99 inch Long Strip IPS High Brightness display, We guaranteed high-quality, if clients were not pleased together with the products' good quality, you can return inside of 7days with their original states.
3.99 inch bar lcd touch screen, Due to our dedication, our items are well known throughout the world and our export volume continuously grows every year. We will continue to strive for excellence by providing high quality solutions that will exceed the expectation of our customers.

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    White spots on TFT LCD screens are usually fixed white spots or areas on the screen, which do not change with the displayed content

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    The LCD screen itself does not emit light, and a backlight needs to be added to the back of the glass for normal display. This involves how to test the surface brightness and backlight uniformity of the LCD screen. The brightness of the LCD screen surface and backlight brightness are measured through BM -7 equipment test, the test is more accurate when the display is powered normally and displays a solid color picture.

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