Multi-domain LCD

Abstract

A multi-domain liquid crystal display, the display includes: a first and a second transparent substrate facing each other; a liquid crystal layer interposed between the first and the second transparent substrate; a shared electrode arranged on the first On the transparent substrate; a first metal layer formed on the second transparent substrate; a first dielectric layer formed on the second transparent substrate and covering the first metal layer; a second metal layer formed on the first dielectric layer on the electrical layer; a second dielectric layer formed on the first dielectric layer and covering the second metal layer; a plurality of common wirings formed on the second dielectric layer; a third dielectric layer formed on the On the second dielectric layer and covering the common wiring; a plurality of first and second pixel electrodes are alternately distributed on the third dielectric layer, and these first and second pixel electrodes are in the same frame controlled by an inversion driving sequence have opposite polarities to each other. Through the design of the present invention, an excellent pixel structure aperture ratio can be obtained while obtaining the multi-domain alignment effect.

Description

technical field [0001] The invention relates to a multi-domain alignment liquid crystal display with high aperture ratio. Background technique [0002] It is known that negative liquid crystal materials with negative dielectric anisotropy are used to form liquid crystal alignment methods of vertical alignment or homeotropic alignment. When no voltage is applied, the liquid crystal molecules are Arranged vertically to the substrate, it can provide good contrast performance. However, generally, in order to form a multi-domain splitting effect in a vertically aligned LCD, the matched structure may have some light leakage or insufficient multi-domain splitting configuration capability. [0003] Figure 1A It is a schematic cross-sectional view showing the design of a known multi-domain vertically aligned LCD (MVA LCD). Such as Figure 1A As shown, bumps 106 are respectively formed on the upper and lower substrates 102, 104, and a vertical alignment film 108 covering the bumps ...

AI Technical Summary

Problems solved by technology

However, the way of forming the slit 206 at the electrode 204 must carefully consider the width of the slit 206 itself and the distance between the two slits 206, etc. Otherwise, the force generated by the slit 206 to make the liquid crystal molecules 208 fall is easily insufficient.

Furthermore, the design of the slit 206 causes the energy of the liquid crystal molecules 208 to rotate in either direction to be equal, so that the alignment distribution of the liquid crystal molecules 208 in space produces discontinuous disclination.

The misalignment defect region 210 is easily formed above the slit 206 and between the two slits 206, thereby reducing the overall light transmittance.

[0006] Furthermore, although the above method of forming protrusions 106, concave structures 116 or electrode slits 206 in the pixel structure can achieve the effect of manufacturing a plurality of liquid crystal micro-domains, distributing these structures will lead to a reduction in the effective display area (active areas) , that is to say, the problem of decreasing the aperture ratio of the pixel structure

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