Pixels of multi-domain vertical alignment liquid crystal displays

Abstract

A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. Each pixel also contains extra-planar fringe field amplifiers that separate the color dots of a pixel. The voltage polarity of the color dots and extra-planar fringe field amplifiers are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and fringe field amplifying regions of the display are arranged so that neighboring polarized elements have opposite polarities.

Description

technical field [0001] The invention relates to a liquid crystal display, in particular to a pixel of a large pixel multi-area vertical alignment liquid crystal display which can be manufactured with a smooth substrate. Background technique [0002] Liquid Crystal Displays (LCDs), first used in simple monochrome displays such as calculators and electronic watches, have become the most dominant display technology. Liquid crystal displays are often used to replace cathode ray tubes (Cathode Ray Tube, CRT) in computer display and television display applications. Various disadvantages of liquid crystal displays have been overcome to improve the quality of liquid crystal displays. For example, active-matrix displays, which widely replace passive-matrix displays, have reduced ghosting and improved resolution, color gradation, viewing angle, and contrast ( Contrast Ratio) and Response Time. [0003] However, the main disadvantages of the traditional twisted nematic LCD (Twisted ...

AI Technical Summary

Problems solved by technology

[0008] Therefore, multi-domain vertically aligned LCDs that provide wide and symmetrical viewing angles are very costly due to the difficulty of adding protrusions to the upper and lower substrates, and the difficulty of aligning the protrusions correctly to the upper and lower substrates

In particular, one protrusion on the lower substrate must be placed in the center of two protrusions on the upper substrate; any alignment between the upper and lower substrates will reduce the production yield

Other technologies that use physical features on the substrate, such as ITO slits that have been used in place of or in conjunction with protrusions, are very expensive to manufacture

Furthermore, the gap between the protrusion and the ITO cannot transmit light, thus reducing the brightness of the multi-domain vertical alignment liquid crystal display (brightness)

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