Vertical alignment liquid crystal display device that has transistors with different switch-on resistance and method

摘要

A vertical alignment liquid crystal display device (VA-LCD) includes a display panel. The display panel includes a plurality of pixels. Each pixel unit includes a first thin film transistor (TFT), a second TFT, and a liquid crystal capacitor having a pixel electrode and a common electrode. The common electrode is applied with a common voltage, a first gray voltage is applied to the pixel electrode through a first TFT, and a second gray voltage is applied to the pixel electrode through a second TFT different from the first gray voltage, such that liquid crystal capacitor maintains two different gray voltages in a display frame time of the VA-LCD.

主权项

1. A liquid crystal display (LCD) device, comprising:
a display panel comprising a plurality of pixels, a plurality of data lines, and a plurality of scan lines intersecting the plurality of data lines, the plurality of scan lines and the plurality of data lines defining the plurality of pixels, a first pixel of the plurality of pixels comprising a first thin film transistor (TFT), a second TFT, a liquid crystal capacitor, a pixel electrode, and a common electrode, the first TFT and the second TFT being directly connected to the liquid crystal capacitor, wherein in the first pixel, the common electrode is electrically connected to a source of the second TFT, a drain of the second TFT is directly connected to the pixel electrode, a source of the first TFT is electrically connected to a first data line of the plurality of data lines, a drain of the first TFT is directly connected to the pixel electrode, and a switch-on resistance of the second TFT is greater than a switch-on resistance of the first TFT, and a same gate voltage is applied to the first TFT and the second TFT, wherein in a display frame time of the LCD device, the common electrode is applied with a common voltage, and the first pixel maintains a first gray voltage and a second gray voltage, the first gray voltage being different from the second gray voltage, wherein a plurality of grooves are formed in the pixel electrode.