Mobile Phone LCD Screen Quality Control Expert

Precautions for LED color digital tube design and development

by:Kimeery     2021-08-26
The design and development of LED color digital tubes and the design and development of LCD screens are actually quite different. The working principle of the LED color digital tube is similar to that of the backlight. It is composed of diaphragm, plastic frame, PCB and light-emitting diode. There are still a lot of details that we need to pay attention to when designing and developing. If the details are not considered clearly, the LED digital tube effect developed in this way will have big problems. When we get the customer's original drawings, we must make an all-round consideration. For example, does the design of the display content meet the requirements of our company's production process. If it is too small, it will affect the process. When designing the diaphragm, the gap between the pen segments should generally be above 0.8mm, and the combination of the diaphragm and the digital tube plastic frame should leave a margin of at least 0.15mm. If the gap between the pen segments is too small, light leakage will occur. In other words, there will be light in the segments that should not be lit. There is also a problem to pay attention to is that the height of the LED digital tube should be above 8mm. If it is too short, the digital tube will be deformed in the process of fixing the glue. That is, the LED digital tube is originally straight, but it becomes curved after being deformed. LED color digital tubes can be divided into bonding process and patch process in process. The difference between these two processes is quite big, especially for the patch LED digital tube, special processing is required on the diaphragm. For example, the diaphragm should have a diffusion function. In addition, to prevent light leakage in the gaps of the diaphragm, apply a layer of light-blocking oil. In general, the design and development of LED color digital tubes must be considered in terms of technology, and must meet the company's process requirements.
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