Active matrix type bistable chiral nematic liquid crystal display and driving method thereof

A technology of liquid crystal display and driving method, which is applied in the field of active bistable bistable nematic liquid crystal display and its driving, can solve the problems of slow update speed of the whole frame, slow response speed, insufficient contrast, etc., and achieve improved frame Update speed, reduce flicker, improve contrast

Inactive Publication Date: 2013-06-26
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the slow response of the bistable state to the chiral nematic liquid crystal, if the driving method of the general active liquid crystal display is used, there will be insufficient contrast or flickering phenomenon, and if multiple sub-frames are used to drive the active bistable state pair Using a chiral nematic liquid crystal display to present grayscale will cause the overall frame update speed to slow down

Method used

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  • Active matrix type bistable chiral nematic liquid crystal display and driving method thereof
  • Active matrix type bistable chiral nematic liquid crystal display and driving method thereof
  • Active matrix type bistable chiral nematic liquid crystal display and driving method thereof

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Embodiment Construction

[0022] figure 1 It shows the pixel structure of the active bistable chiral nematic liquid crystal display according to an embodiment of the present disclosure. Such as figure 1 As shown, each pixel P includes a transistor T, a capacitor C, and a liquid crystal layer LC. When the scan line G transmits a scan signal to select a pixel P, the transistor T is turned on so that the data signal on the data line D is written into the pixel P to drive the liquid crystal layer LC, and the capacitor C is used to maintain the written signal voltage. When the updating is completed, the scanning line G transmits a non-selection signal to the pixel P to make the transistor T non-conductive, and the liquid crystal layer LC is maintained in a specific state by the charge stored in the capacitor C. The above-mentioned actions are the process of driving 1 pixel.

[0023] The traditional driving method and the driving method of an embodiment of the present disclosure will be used to drive fig...

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Abstract

The disclosure provides a driving method for an active matrix type bistable chiral nematic liquid crystal display, including: dividing a frame into at least two fields, wherein each field is formed by a plurality of pixel rows; driving one of the at least two fields by a plurality of driving operations, wherein a liquid crystal unit of each pixel in the field is driven to one of two predetermined states in each driving operation; and driving the other fields by the plurality of driving operations.

Description

technical field [0001] The present disclosure relates to an active bistable chiral nematic liquid crystal display and its driving method (Active Matrix Type Bistable Chiral Nematic Liquid Crystal Display And Driving Method Thereof), and in particular to an active bistable capable of accelerating the frame update rate A chiral nematic liquid crystal display and a driving method thereof. Background technique [0002] Among the types of liquid crystals, cholesteric liquid crystals belong to a bistable chiral nematic liquid crystal. Compared with general liquid crystal displays, maintenance voltage is required to maintain the alignment of liquid crystal molecules, because active bistable chiral nematic liquid crystal displays have Bistable characteristics, so it has the advantages of low power consumption, low cost, high contrast, wide viewing angle, etc., and has great potential in the market. Compared with the passive bistable bistable nematic liquid crystal display, the acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/36
CPCG09G3/3651G09G2300/0486G09G2310/0224
Inventor 陈志仁徐健智吴致宏
Owner IND TECH RES INST
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