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LCD device

A liquid crystal display and liquid crystal display panel technology, applied to static indicators, instruments, etc., can solve problems such as shutdown afterimages, and achieve the effect of eliminating shutdown afterimages

Inactive Publication Date: 2008-05-07
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of the residual image after shutdown that exists in the liquid crystal display in the prior art, it is necessary to provide a liquid crystal display that can effectively eliminate the residual image after shutdown.

Method used

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Embodiment Construction

[0015] see figure 2 , is an equivalent circuit diagram of a preferred embodiment of the liquid crystal display of the present invention. The liquid crystal display 200 includes a liquid crystal display panel (not shown), a scan driving circuit 210 and a data driving circuit 220 . The scan driving circuit 210 and the data driving circuit 220 are bonded on the liquid crystal display panel by a chip-on-glass process. The scan driving circuit 210 is used to scan the liquid crystal display panel, and the data driving circuit 220 is used to provide grayscale voltages to the liquid crystal display panel when the liquid crystal display panel is scanned.

[0016] The LCD panel includes a pixel array 230 , a short circuit test circuit 240 and a control unit 290 . The short circuit test circuit 240 and the control unit 290 constitute a discharge circuit. When the liquid crystal display 200 is powered off, a large amount of charge stored in the liquid crystal display panel is quickly r...

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Abstract

The invention relates to a liquid crystal display capable of eliminating residual image after shutdown, which comprises a liquid crystal display panel, a scanning driving circuit and a data driving circuit. The liquid crystal display panel includes a pixel array, a short circuit test circuit and a control unit. The scanning driving circuit is used to scan the liquid crystal display panel, and the data driving circuit is used to provide gray scale voltage to the liquid crystal display panel when the liquid crystal display panel is scanned. The control unit and the short-circuit test circuit constitute a discharge circuit. When the liquid crystal display is powered off, the charges stored in the liquid crystal display panel are quickly released through the discharge circuit.

Description

technical field [0001] The invention relates to a liquid crystal display. Background technique [0002] Due to the advantages of lightness, thinness, and low power consumption, liquid crystal displays are widely used in modern information equipment such as televisions, notebook computers, mobile phones, and personal digital assistants. Generally, during the display time of one frame, the liquid crystal display uses a storage capacitor to store charges to maintain the display of the picture. When the liquid crystal display is turned off, if the charge stored in the storage capacitor cannot be released in time, there will be a residual image phenomenon. [0003] see figure 1 , is an equivalent circuit diagram of a prior art liquid crystal display. The liquid crystal display 100 includes a liquid crystal display panel (not shown), a scan driving circuit 110 and a data driving circuit 120 . The scan driving circuit 110 and the data driving circuit 120 are bonded on the liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/36
Inventor 祁小敬
Owner INNOCOM TECH SHENZHEN
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