The bad point of the LCD screen is also called the absenteeism. It refers to the sub-pixel points displayed on the LCD screen in black and white and red, green and blue. Each point refers to a sub-pixel. The most feared LCD screen is the dead point. Once a dead pixel occurs, the point on the display always shows the same color regardless of the image displayed on the display. This “bad point” is unserviceable and can only be solved by replacing the entire display. The bad points can be divided into two categories. The dark and bad points are the “black spots” that cannot display the content regardless of the change of the screen display content, and the most annoying thing is the kind of bright spots that always exist after booting. If the technical problem is caused by the dead pixels is still irreparable. However, if it is because of the dead pixels that are left in a still picture for a long time, it may be removed by software repair or wiping.

The dead pixel is a physical damage that is inevitable in the production and use of liquid crystal screens. In most cases, it occurs when the screen is manufactured. Impact or natural loss during use may also cause bright/bad spots. As long as one or more of the three primary colors that make up a single pixel are damaged, bright/bad points are generated, and both production and use may cause damage.

However, some LCD screens have a bad point in the process of use. Below Topfoison simply enumerates some places to pay attention to when using it normally:

1. Keep the voltage power normal;

2, LCD screen is one of the most vulnerable parts, it is best not to use pens, keys and other sharp objects to point on the screen;

3, to minimize the possibility of direct exposure of the screen under strong light, in order to prevent the screen from being exposed to strong light, resulting in excessive temperature and accelerated aging.

4, when using, must avoid long-time boot work, but can not display the same screen for a long time, so it is easier to accelerate the aging of the LCD screen, and promote the formation of dead pixels.

The above is just a few small methods when checking the LCD panel. There are still many ways to identify LCD panels. We have a newer and better way to tell you the first time.a