What Is The Reason For The Disconnection Of The Number Of Characters On The LCD Screen?

Risenta specializes in the production of various LCD screens, please click to contact us

I believe that most of my friends have encountered this kind of situation. When using or just lighting up, there will be defects in the number of words or letters. In the face of this

How much do you know about the reasons for the series?

First of all, it is certain that this is a bad phenomenon, and this bad phenomenon also has many pleasant names, such as missing pen paragraphs and missing strokes.

Back to the topic, when this happens, the first thing to do is to find out the reason. Then solve the problem, this phenomenon of missing segments is divided into two types, - -

There are regular missing segments, and the other is irregular missing segments. First of all, let's talk about regular missing segments, compare the truth table in the LCD drawing, and focus on

Whether the segment that is not displayed is on the same COM pin or the same SEG pin, how to rule out the difference between the two?

The first point is to check whether the corresponding COM and SEG pins have false welding.

The second point is to check whether the pins are damaged, which affects the conductivity and causes missing segments. Of course, there must be some special reasons for this. There have been friends before.

Friends asked, there was no problem at the beginning, but after a period of time, there was a lack of pen sections. After analysis in the later stage, it was because the manufacturers cut corners and materials, which caused the oxygen of the PCB.

, and finally formed the poor electrical properties and missing segments that we have seen.

The third point is that it is because of irregular missing paragraphs. What does it mean? The main reason is that it is not the same COM or the same SEG. This is not the case

It may be a problem with the PCB hardware or the LCD screen.

So first of all, we need to find the problem from the program, get one of the pen segments that is not displayed, use the instrument to correspond to the waveforms of the two, and then test the corresponding

The established Xilaohong Xingzai map provides 7 questions to help the W and I.