China 1.14 inch tft display interface SPI 13PIN Manufacturers, Suppliers, Factory

How to choose between amorphous silicon (a-Si) and low temperature polysilicon (LTPS) for project development with display

Ordinary LCD screens use CCFL light sources, that is, cold-cathode fluorescent lamps (similar to the scanning lamps in the copy), with one on each side of the screen and a backlight on the back of the display, which is composed of fluorescent substances. The light sources on both sides can be evenly distributed on the back of the entire screen, so that the entire screen can be evenly illuminated. However, due to technical limitations, the brightness of such a display is not completely uniform, but it is difficult to find it. At the same time, the lamp also has a certain lifespan, and it will turn yellow after a long time.

Static electricity can be grounded in the early hardware design. In the later production, pay attention to wearing static bracelets and finger cots to avoid holding the display screen directly with your hands. Then, static electricity experiments can be performed to detect whether the static electricity of the entire machine meets the standards.

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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