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Liquid-crystal displaying apparatus

A liquid crystal display device and liquid crystal technology, which can be used in identification devices, instruments, nonlinear optics, etc., and can solve problems such as insufficient improvement of display quality.

Inactive Publication Date: 2005-08-24
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the present inventors have found that display quality cannot be sufficiently improved merely by providing an electrode structure as disclosed in this patent application

Method used

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  • Liquid-crystal displaying apparatus
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Embodiment Construction

[0101] The embodiments of the present invention will now be described with reference to the drawings.

[0102] First, the electrode structure and function of the liquid crystal display device of the present invention will be described. Hereinafter, preferred embodiments of the present invention will be described with respect to an active matrix type liquid crystal display device using thin film transistors (TFT). Furthermore, although the preferred embodiment of the present invention will be described with respect to a transmissive liquid crystal display device, alternatively, the present invention may use a reflective liquid crystal display device or a transmissive / reflection combined liquid crystal display device.

[0103] Note that in this specification, the area of ​​the liquid crystal display device corresponding to the "pixel" will be referred to as the "pixel area", which is the smallest unit of display. In a color liquid crystal display device, R, G, and B "pixels" corresp...

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Abstract

A first substrate includes, on one side thereof that is closer to a liquid crystal layer, a picture element electrode provided for each picture element region, a switching element, and a bus line. A second substrate includes a counter electrode opposing the picture element electrode. The picture element electrode includes a plurality of openings and a solid portion that includes a plurality of unit solid portions. In each picture element region, the liquid crystal layer takes a vertical alignment in the absence of an applied voltage, and forms a plurality of liquid crystal domains, each of which takes a radially-inclined orientation, in the plurality of openings and the solid portion by inclined electric fields produced at respective edge portions of the plurality of openings of the picture element electrode in response to an applied voltage. In each picture element region, at least one of the plurality of openings of the picture element electrode that is located along the bus line and located between two adjacent ones of the plurality of unit solid portions is superposed on the bus line.

Description

Technical field [0001] The present invention relates to a liquid crystal display device, in particular to a liquid crystal display device with wide viewing angle characteristics and capable of producing high-quality displays. Background technique [0002] In recent years, thin and light-weight liquid crystal display devices have been used as personal computer displays and PDA (Personal Digital Assistant) displays. However, conventional twisted nematic (TN) type and super twisted nematic (STN) type liquid crystal display devices have narrow viewing angles. Various technological developments have been adopted to solve this problem. [0003] A typical technique for improving the viewing angle characteristics of a TN-type or STN-type liquid crystal display device is to add an optical compensation plate to it. Another method is to use a lateral electric field mode, in which a horizontal electric field relative to the plane of the substrate is applied to the liquid crystal layer. The l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337G02F1/1333G02F1/1343G02F1/1345G02F1/1362G02F1/1368
CPCG02F1/133707G02F2001/133742G02F1/1362G02F1/133742G02F1/1337
Inventor 久保真澄荻岛清志越智贵志渡边启三
Owner SHARP KK
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