Pixel array substrate and LCD device

Abstract

The invention provides a pixel array substrate, comprising a substrate, a first patterned conductor layer, a second patterned conductor layer and a plurality of pixel electrodes, wherein, the first patterned conductor layer comprises a plurality of scanning beams and a plurality of grids; the second patterned conductor layer comprises a plurality of data wires, a plurality of source electrodes, a plurality of drain electrodes and a plurality of capacitor electrodes; the data wires and the scanning beams define a plurality of pixel areas; the capacitor electrodes and the first patterned conductor layer are coupled into a plurality of pixel storing capacitors CST, the drain electrodes and the corresponding grids are coupled in an overlapping area into a plurality of grid / drain capacitors CGD, a liquid crystal capacitor CLC is arranged on the upper part of each pixel electrode; in at least one pixel area, the ratio of the capacitance values of CST to CGD is alpha, the ratio of the capacitance values of CLC to CST is beta; moreover, CST can have a first error value, CGD can have a second error value, the ratio of the first error value to the second error value is within the range of alpha (1+beta)(1+-50 percent).

Description

field of invention [0001] The present invention relates to an array substrate and a display device, and in particular to a pixel array substrate (pixel array substrate) and a liquid crystal display device (Liquid Crystal Display, LCD). technical background [0002] The rapid progress of the multimedia society is mostly due to the rapid progress of semiconductor components or man-machine display devices. As far as display devices are concerned, flat panel display devices with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation have gradually become the mainstream of the market. Among various flat display devices, thin film transistor (Thin Film Transistor, TFT) liquid crystal display (Liquid Crystal Display, LCD) is currently the most mature flat display device. [0003] FIG. 1 is a schematic circuit diagram of a known thin film transistor liquid crystal display device. Please refer to Figure 1, the...

AI Technical Summary

Problems solved by technology

If it is distributed in the exposure range of a large-sized mask, the pixel patterning process in some areas is more difficult to control accurately, so the pixel storage capacitor C in each area ST with gate / drain capacitance C GD also often have an insignificant error from its ideal estimate

Therefore, according to equation (1), the V of the pixels in each area F There will also be a phenomenon that the compensation cannot be performed accurately. As mentioned above, it also causes flickering or unevenness (mura) in the screen of the liquid crystal display device.

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