Problem analysis and solutions in the process of LED backlight test
I have recently followed up a customer's order for an LCD screen + LED backlight, and I am deeply impressed. A lot of product knowledge is lacking, which leads to communication barriers, which also summarizes many own problems and learns some experience. Today, I would like to share with you the problems and solutions in the LED backlight test process: 1. The brightness is not enough and the color is relatively light. Analysis: The customer is emerald green (high-brightness LED lights), and the thickness of the open-molded light guide plate is only 1.4mm. Solution: Choose emerald green LED lights that are close to the customer's high brightness. Change the screen-printed light guide plate to an open mold. The screen-printed light guide plate has dense dots, and the light transmission and light guide effect is not as good as that of the mold. Two methods can increase the brightness of the lamp. 2. Light leakage (light leakage eye) analysis: The shading area is not enough reserved, only 3mm. The general situation is 5-8MM, and the lamp holder of the plug-in lamp is relatively large, so the most suitable shading area is 8MM. Solution: When the project produces renderings, communicate with the customer. According to the customer's product structure, if the customer's product structure is limited, the drawing will mark the light leakage here. 3. Conductivity. Analysis: During the process of assembling the LCD liquid crystal module, the LED backlight will be placed on the PCBA circuit board. If the two are in contact, it will cause poor contact and cause a short circuit. Solution: The patch lamp on the toothpick board of the LED backlight does not need solder, but can be fixed with glue to play the role of insulation. Another very important thing to note is that the edging film around the light guide plate must not contain any conductive metal materials. Replace it with ordinary vinyl according to the customer's sample, which plays a role of insulation. The above is the order I have entered, and the 3 problems and solutions for the LED backlight.
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