Fringe-field-switching-type liquid crystal display device, array substrate and manufacturing method of array substrate

Abstract

The invention discloses an array substrate of a fringe-field-switching-type crystal display device. The array substrate comprises a plurality of data lines, a plurality of grid lines, pixel electrodes, first public electrodes and second public electrodes, wherein the grid lines and the data lines are arranged in a crossed mode to define pixel regions, the pixel electrodes are arranged in the pixel regions, the first public electrodes are formed between the data lines and the pixel electrodes, the positions, corresponding to the data lines, of the first public electrodes are hollowed out, the second public electrodes and the pixel electrodes are located on the same layer and the second public electrodes are overlapped with the data lines. According to the array substrate, stray capacitance between the first public electrodes and the data lines is reduced, signal transmission delay is shortened, and power consumption is lowered. Meanwhile, due to the arrangement of the second public electrodes, interference brought to the pixel electrodes by the data lines is shielded, stray capacitance of the pixel electrodes between the adjacent pixel regions is also reduced, interference of the pixel electrodes between the adjacent pixel regions is effectively absorbed, and the quality of displayed frames is improved.

Description

technical field [0001] The invention relates to flat panel display technology, in particular to a fringe field liquid crystal display device, an array substrate and a manufacturing method thereof. Background technique [0002] A fringe field (FFS, Fringe Field Switching) liquid crystal display device has the advantages of wide viewing angle, high aperture ratio, low power consumption, and high brightness, and is widely used in various fields. The FFS liquid crystal display device generates a fringe electric field through the electrodes between pixels in the same plane, so that the aligned liquid crystal molecules between the electrodes and directly above the electrodes can be rotated and switched in the plane direction parallel to the substrate, thereby improving the light transmission efficiency of the liquid crystal layer. The FFS liquid crystal display device overcomes the problem of low light transmission efficiency of conventional in-plane switching (IPS, In-Plane-Switc...

AI Technical Summary

Problems solved by technology

For the FFS liquid crystal display device with high-resolution point inversion, the electric field difference between the pixel electrodes 16 of adjacent pixel regions 13 is relatively large, thereby forming a large pixel electrode capacitance Cpp, which affects the display quality

At the same time, there is only an insulating layer between the data line 11 and the common electrode 15, and a large parasitic capacitance Ccp will be formed between the common electrode 15 and the data line 11, resulting in an excessive load on the data line 11 and a delay in signal transmission. As a result, the quality of the display picture is reduced, and the power consumption is relatively large.

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