The utility model relates to LCD display light detection tool

Release Time:

2022-08-03 10:57

The utility model relates to LCD display light detection tool

The LCD consists of two polarizing filters that are perpendicular to each other, so under normal conditions all light trying to penetrate should be blocked. However, due to the distortion of the liquid crystal between the two filters, the light is changed by the liquid crystal molecules by 90 degrees after passing through the first filter and finally through the second filter. On the other hand, if a voltage is applied to the liquid crystal, the molecules will be placed exactly parallel from the beginning, so that the light does not change and is therefore blocked by a second filter. In short, electricity blocks light, and no electricity emits light. Of course, the position of the LCD in the LCD can also be changed to light when powered on and block when not. But since LCDS are almost always on, only "power on" can block out the light.

Under the action of electric field, the alignment direction of liquid crystal molecules changes, thus changing (modulating) the transmittance of external light source and completing the electro-optical conversion. Then, using the different excitation of R-GrectorB three primary color signal, the color reproduction in time and space which is different from that of CRT color picture tube is completed through three main color filters: red, green and blue. It uses digital addressing and digital signal excitation to reproduce the image.

Thus testing the LCD display light is particularly important, in the LCD and touch screen is also in this procedure before laminating, rapid detection of the LCD can work normally is a very important content, research and development of liquid crystal display light detection tools, our company can be very good to help us improve this item, make product production process can be more fluent, Greatly reduce the defective rate of products.