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Bistable chiral alignment type liquid crystal display and drive method thereof

A technology of a liquid crystal display and a driving method, which is applied in the field of a bistable chiral nematic liquid crystal display and its drive, and can solve the problem that the resolution, dynamic picture and display quality of the bistable chiral nematic liquid crystal display are difficult to improve, Reduced aperture ratio in pixels, complicated pixel architecture design, etc.

Active Publication Date: 2006-12-20
上海虹夏光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the limitations of the passive matrix on the drive, it is difficult to improve the resolution, dynamic picture and display quality of the bistable nematic liquid crystal display.
[0005] Furthermore, Philips provides a dynamic driving method in its U.S. Patent No. 6703995 "bistable chiral nematic liquid crystal display and its driving method" to drive active matrix bistable chiral nematic liquid crystal display , in order to achieve the special waveform of the dynamic driving method, it adopts the 5T1C pixel structure, and in order to control the transistors of this structure, a lot of control signals are added, which increases the cost of the driving system and complicates the design of the pixel structure, thereby reducing the manufacturing yield Rate
In addition, the pixel structure has multiple transistors and capacitors, which reduces the aperture ratio in the pixel and affects the display quality.

Method used

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  • Bistable chiral alignment type liquid crystal display and drive method thereof
  • Bistable chiral alignment type liquid crystal display and drive method thereof
  • Bistable chiral alignment type liquid crystal display and drive method thereof

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Embodiment Construction

[0078] The invention mainly provides a bistable anti-chiral nematic liquid crystal display and an active driving method thereof. Each pixel of the bistable chiral nematic liquid crystal display includes at least one transistor as a switch for inputting a row voltage to the pixel. The pixel may also include a capacitor for storing the voltage of the pixel. The panel of the bistable chiral nematic liquid crystal display includes a pixel circuit for driving the display, and the data signal enters a selector from the data bus, and the selector selects an input terminal composed of at least one fixed voltage and a data signal from the control signal terminal. One of the signals is an output signal, which is used as a row voltage for driving the chiral nematic liquid crystal. At the same time, the common electrode at the other end of the pixel is applied with an appropriate voltage to control the steady state of the chiral nematic liquid crystal of the pixel.

[0079] More specifi...

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Abstract

The invention discloses a double-steady state hand-opposite nematic LCD and driving method, which is characterized by the following: each pixel of double-steady state hand-opposite nematic LCD contains at least one transistor as pixel switch of input line voltage and capacitance to reserve pixel voltage, which updates image into plural secondary images with secondary images driving the displayed dielectric corresponding condition according to different driving conditions.

Description

technical field [0001] The invention relates to a bistable anti-chiral nematic liquid crystal display and a driving method thereof; in particular, it relates to a bistable anti-chiral nematic liquid crystal display adopting an active driving method. Background technique [0002] Cholesteric liquid crystal (Cholesteric liquid crystal) is a reflective material that provides grayscale images in hyperchromatic colors. The cholesteric liquid crystal material can also be used as a bistable material, and can have a very wide viewing angle (view angle) after special design, and does not need additional components such as polarizers and color filters. Therefore, cholesteric liquid crystal materials can provide displays with high resolution, high color image quality, low power and low price. [0003] The cholesteric liquid crystal material has two stable states, wherein the reflective state (planar state) of the cholesteric liquid crystal material is stable under zero applied electri...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/36G09F9/35
Inventor 路智强张忠益廖奇璋贡振邦
Owner 上海虹夏光电科技有限公司
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