Control method and control apparatus for liquid crystal display

A technology of a liquid crystal panel and a control method, applied in the direction of cathode ray tube indicators, static indicators, instruments, etc., can solve the problems of brightness, dynamic range reduction, failure to obtain brightness deviation, etc., to ensure brightness and improve display. quality effect
CN100495138CInactive Publication Date: 2009-06-03SEIKO EPSON CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SEIKO EPSON CORP
Publication Date
2009-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The image display apparatus of the invention applies a tone-based voltage, which corresponds to a tone value of image data at each of multiple pixels on a VA liquid crystal display, to the pixel for display of an image represented by the image data on the VA liquid crystal display. The tone-based voltage of each pixel is restricted, based on a transmittance-voltage characteristic of the pixel that differs by the position of the pixel on the plane of the VA liquid crystal display. This arrangement ensures application of adequate voltages according to the tone values of image data to the VA liquid crystal, thus enhancing the quality of images displayed on the VA liquid crystal display.
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Description

technical field

[0001] The present invention relates to the control of a liquid crystal panel, and in particular, to the control of a liquid crystal panel in which liquid crystal molecules enclosed between opposing substrates become oriented perpendicular to the substrates in a state where no voltage is applied. Light is blocked, and the orientation is changed to the side parallel to the substrate according to the applied voltage, thereby allowing light to pass through. Background technique

[0002] Liquid crystals are classified and called according to the characteristics of their liquid crystal alignment, and liquid crystals with the above-mentioned liquid crystal alignment are called VA (Vertical Alignment: Vertical Alignment) liquid crystals. Since the VA liquid crystal does not cause so-called twist in the liquid crystal alignment caused by the application of voltage, it has a short response time and a large viewing angle (viewing angle), so it is being rapidly populari...

Claims

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