Liquid crystal display device

A technology of liquid crystal display devices and thin film transistors, which is applied to static indicators, optics, instruments, etc., can solve the problem of afterimage after shutdown and achieve the effect of eliminating afterimage after shutdown
CN101546529BInactive Publication Date: 2011-06-15INNOCOM TECH (SHENZHEN) CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INNOCOM TECH (SHENZHEN) CO LTD
Publication Date
2011-06-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a liquid crystal display device, which comprises a scanning drive circuit, an active matrix, a reset circuit and a charging circuit, wherein the scanning drive circuit is used for outputting a first electrical level and a second electrical level; the active matrix includes a plurality of pixel units driven by the first electrical level and the second electrical level, each pixel unit includes a thin film transistor which is turned on when receiving the first electrical level and is turned off when receiving the second electrical level, the charging circuit is used for maintaining the first electrical level after shutdown; and the reset circuit makes all output of the scanning drive circuit select the first electrical level. The liquid crystal display device can quickly and effectively eliminate the remnant shade of the shutdown.
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Description

technical field

[0001] The invention relates to a liquid crystal display device. Background technique

[0002] Currently, liquid crystal display devices are widely used in desktop computers, personal digital assistants (PDAs), portable phones, televisions, and various office automation and audio-visual equipment. In liquid crystal display devices and related products, when the external power is turned off, since a large amount of residual charge in the liquid crystal display panel of the liquid crystal display device cannot be released in time, there will be residual images on the display screen after shutdown, that is, after-image phenomenon after shutdown.

[0003] see figure 1 , which is a schematic diagram of a circuit structure of a prior art liquid crystal display device. The liquid crystal display device 10 includes an active matrix 15 , a data driving circuit 11 and a scanning driving circuit 13 . The active matrix 15 includes a plurality of data lines 153 and a p...

Claims

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