How to judge the quality of tft-lcd LCD screen?

The tft-lcd LCD screen is applied to the smart terminal, but some smart terminal companies purchase that they don’t know how to judge the quality of the tft-lcd LCD screen. Here are a few tips shared by Chenghao Display, so that you can quickly master how to judge the tft-lcd The quality of the LCD screen can avoid the dilemma of being at a loss when purchasing a tft-lcd LCD screen.

1. Observe the appearance of the screen with eyes

When you take out the tft-lcd LCD panel, you need to wear finger cots to avoid leaving fingerprints on the LCD screen and avoid scratching your fingers due to contact with electronic components. When checking the LCD display screen, we mainly check whether the appearance of the tft-lcd LCD screen is deformed or damaged, whether the film is smooth, whether there are foreign objects, creases, etc. inside the tft-lcd LCD screen.

2. Electrical measurement

The power test is mainly a quality inspection method to check the display effect after powering on the tft lcd module. After powering on the lcd screen, focus on checking whether the screen is dotted, whether the display is uneven, whether the color looks realistic, whether the display effect is good, etc. If the tft lcd module has a touch screen, it is also necessary to test whether the touch screen works and whether the touch Fluency, whether there is a jumping phenomenon, etc. For tft lcd, electrical measurement is very important, because the electrical measurement effect of tft-lcd LCD screen is the actual display effect.

3. Experiment to see the results

The specific performance data of the tft lcd screen cannot be directly obtained through appearance inspection or electrical measurement, and experimental testing is the only means to obtain specific performance parameters. If you have the test conditions, the tests you can do on the tft-lcd LCD screen include brightness test, contrast test, high and low temperature test, aging test and so on.