Liquid crystal display device

a liquid crystal display and display device technology, applied in static indicating devices, non-linear optics, instruments, etc., can solve the problems of difficult to realize stable production of devices, narrow viewing angle of conventional twist nematic and super twist nematic liquid crystal display devices, and high probability of rubbing streaks in displayed images. achieve the effect of wide viewing angle, high continuity, and improved display quality of conventional liquid crystal display devices
US20080266499A1Inactive Publication Date: 2008-10-30SHARP KK
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SHARP KK
Publication Date
2008-10-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

In each picture element region, a first electrode provided on one side of the first substrate that is closer to the liquid crystal layer includes a plurality of sub-electrodes, whereby the liquid crystal layer forms a liquid crystal domain taking a radially-inclined orientation above each sub-electrode by an inclined electric field produced around the sub-electrode. The second substrate includes a stepped portion including an upper tier located in the reflection region, a lower tier located in the transmission region and a side surface connecting the upper tier and the lower tier to each other, the side surface of the stepped portion being located in the reflection region and covered by the second electrode. The plurality of sub-electrodes are arranged in a line in a column direction D2, and picture elements that are adjacent to each other in a row direction D1 are driven with voltages of opposite polarities in each frame.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having a wide viewing angle characteristic and being capable of producing a high quality display.BACKGROUND OF THE INVENTION

[0002] In recent years, liquid crystal display devices, which are thin and light in weight, are used as personal computer displays and PDA (personal digital assistance) displays. However, conventional twist nematic (TN) type and super twist nematic (STN) type liquid crystal display devices have a narrow viewing angle. Various technical developments have been undertaken to solve the problem.

[0003] A typical technique for improving the viewing angle characteristic of a TN or STN type liquid crystal display device is to add an optical compensation plate thereto. Another approach is to employ a transverse electric field mode in which a horizontal electric field with respect to the substrate plane is applied across the ...

Claims

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