What is the Uniformity of ​TFT LCD Display?

TFT is thin film field effect transistor. The so-called thin film transistor means that each liquid crystal pixel on the liquid crystal display is driven by the thin film transistor integrated behind it. The TFT LCD display is a thin film transistor type liquid crystal display. Each pixel is equipped with a semiconductor switch. Each pixel can be directly controlled by dot pulses. Therefore, each node is relatively independent and can be continuously controlled, which not only improves The response speed of the display screen can accurately control the display color gradation, so the color of TFT liquid crystal is more real. So what is the uniformity of TFT LCD display?

Ⅰ. The specific performance of the unevenness of the TFT LCD display

Generally, the uneven display of the TFT LCD display will be reflected in the display effect. The local display brightness is higher or darker than other parts. There is an obvious difference in brightness, and even some uneven TFT LCD display module can cause backlight leakage and other phenomena. The uneven brightness of the TFT LCD screen is a common quality problem. The average user using the uneven brightness of the TFT LCD screen will be more prone to fatigue, and the display effect is not good, generally in a specific white or black screen. More obvious.

Ⅱ. The methods of judging the uniformity of the TFT LCD display

The uniformity of the TFT LCD display can be known by measurement, and then the uniformity can be obtained by the calculation formula of the average brightness distribution uniformity. It is not judged directly with the naked eye because there may be deviations. Proculus tells the formula here. Everyone: the uniformity of the TFT LCD display = minimum brightness ÷ maximum brightness × 100%. The higher the uniformity value of the TFT LCD display, the better the uniformity of the TFT LCD display.

The above content is an introduction to the uniformity of the TFT LCD display. The TFT LCD display has a semiconductor switch for each pixel. Each pixel can be directly controlled by a dot pulse, so each node is relatively independent. It can be controlled continuously, which not only improves the response speed of the display screen, but also accurately controls the display color gradation, so the color of the TFT LCD is more true.