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Liquid crystal display using planar cholesteric liquid crystal as electric control delay wafer

A technology of liquid crystal display and cholesteric liquid crystal, which can be used in static indicators, polarizing elements and other directions, and can solve the problems of poor contrast, high color display cost, and low light utilization rate.

Inactive Publication Date: 2008-11-26
赵勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid crystal display is equipped with TFT and red, green and blue three primary color sequential light sources, which can be made into a sequential multi-gray scale full-color liquid crystal display, which solves the problems of slow response speed, low light utilization rate, poor contrast and problems existing in existing color liquid crystal displays. Technical problems such as high cost of color display

Method used

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  • Liquid crystal display using planar cholesteric liquid crystal as electric control delay wafer
  • Liquid crystal display using planar cholesteric liquid crystal as electric control delay wafer
  • Liquid crystal display using planar cholesteric liquid crystal as electric control delay wafer

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Embodiment Construction

[0074] see figure 1 , which schematically shows an embodiment of a liquid crystal display using a planar cholesteric liquid crystal as an electrically controlled retarder. In this embodiment, there is a liquid crystal cell, which is provided with upper and lower transparent substrates B 1 , B 2 , the transparent substrate can be made of glass or other materials. The cell thickness of this liquid crystal cell is 4 μm, and a sealing ring is provided on the periphery. An alignment layer Q with a pretilt angle is provided on the inner surfaces of the two transparent electrodes 1 , Q 2 , the function of this layer is to make the surface liquid crystal layer have a certain orientation and pretilt angle. The material of the alignment layer in this embodiment is polyimide, and the pretilt angle is about 3°.

[0075] On the inner surface of the lower substrate of one of the two transparent substrates, corresponding to each pixel, a multi-toothed comb electrode G made of materials...

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Abstract

This invention relates to a liquid crystal display taking a plane cholesteric phase crystal as the electric controlled delay chip, a crystal box as the electric controlled delay chip is composed of up and down two parallel glass base plates surrounded by a seal loop. An orientation layer is set on the inside surface of the two base boards characterizing that each pixel of the base boards is set with multi-tooth comb electrode. The plane cholesteric phase LC is charged in the LC box, its optical delay is controlled by the electric field generated by electrodes to alter its intensity, which enables the optical delay to vary continuously and quickly between o-lamda / 2. Two vertical polarized chips are adhered on outer surface of the base plates of the box with 45deg. angle of the polarized direction to the comb electrode to make up of LCD matched with TFT and three basic color time sequence light source to constitute the time sequence color LCD.

Description

technical field [0001] The invention relates to a liquid crystal display using planar cholesteric liquid crystal as an electrically controlled retarder. The electronically controlled retarder is made of planar cholesteric liquid crystal. Its core technology is that each pixel on the lower (or upper) substrate of the liquid crystal cell is provided with a multi-toothed comb-shaped electrode, and the optical retardation of the liquid crystal is controlled by the multi-toothed comb-shaped electrode. The transverse electric field formed between the electrodes parallel to the substrate is controlled, and the electric field strength can be changed to make the optical retardation change rapidly and continuously between 0-λ / 2. The electronically controlled liquid crystal retardation plate can be made into a liquid crystal display together with a polarizing plate. The liquid crystal display is equipped with a TFT and red, green and blue primary color sequential backlight sources, and ...

Claims

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Application Information

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IPC IPC(8): G02F1/133G02B5/30
Inventor 吴葆刚高建谧温景梧李裕宽范志新吴佶宁张玮赵勤
Owner 赵勤
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