Multiple-domain liquid crystal display

Abstract

A multi-domain liquid crystal display device comprises a colorful filter baseboard, an active element array baseboard, and a liquid crystal layer between, wherein the colorful filter baseboard is provided with a first share electrode, the active element array baseboard is arranged with a second share electrode and a pixel electrode, while the second share electrode surrounds and cooperates with the pixel electrode to generate an edge electric field. The invention can overcome the defects of prior technique, while each liquid crystal molecule is vertically directed without voltage (Voff), to avoid abundant optical path difference (delta nd=0), and avoid light leakage, and compared with prior method that forming slim at electrode, the invention uses the edge electric field generated by the voltage difference between the second share electrode and the pixel electrode, to provide a strong liquid crystal molecule flip force, to reduce the formation of bias defect area to improve the light penetrate rate.

Description

technical field [0001] The invention relates to a multi-domain liquid crystal display, in particular to a multi-domain liquid crystal display which utilizes a fringe field effect to obtain a wide viewing angle effect. Background technique [0002] It is known that a negative type liquid crystal material with a negative dielectric anisotropy is used to form a liquid crystal alignment method of vertical alignment or homeotropic alignment. When no voltage is applied, the liquid crystal molecules are aligned vertically. Arranged in the form of substrates, it can provide good contrast (contrast) performance. However, a vertically aligned LCD usually has poor viewing angle characteristics in gray level display states at different viewing angles. Therefore, different known designs have been proposed to improve the above situation. [0003] FIG. 1A is a schematic cross-sectional view showing the design of a conventional multi-domain vertically aligned LCD (multi-domain vertically ...

AI Technical Summary

Problems solved by technology

However, the way of forming the slit 206 at the electrode 204 must carefully consider the alignment error of the upper and lower substrates, the width of the slit 206 itself, and the distance between the two slits 206, etc. Otherwise, the liquid crystal molecules 208 will fall due to the slit 206. easily lack of strength

Moreover, the structure forming 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 dislocation defects (disclination)

The misalignment defect region 210 is easy to form above the slit 206 and between the two slits 206, thereby reducing the overall light transmittance

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