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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

Inactive Publication Date: 2011-06-15
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of residual image after shutdown in the prior art liquid crystal display device, it is necessary to provide a liquid crystal display device that can effectively eliminate residual image after shutdown

Method used

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Examples

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Embodiment Construction

[0013] Please refer to FIG. 2 , which is a schematic diagram of the circuit structure of the first embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 20 includes an active matrix 25 , a data driving circuit 21 , a scanning driving circuit 23 , a reset circuit 27 and a charging circuit 28 . The scan driving circuit 23 is used to scan the active matrix 25; the data driving circuit 21 provides grayscale signals to the active matrix 25 when it is scanned. The reset circuit 27 and the charging circuit 28 are connected to the scan driving circuit 23 , and release the residual charge of the active matrix 25 after the liquid crystal display device 20 is turned off.

[0014] The active matrix 25 includes a plurality of data lines 251 and a plurality of scan lines 253 vertically insulated and intersected therewith. The plurality of data lines 251 and the plurality of scan lines 253 divide a plurality of pixel units 252 . Each pix...

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PUM

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36H03K17/687G02F1/1362
Inventor 闫东冯沙
Owner INNOCOM TECH (SHENZHEN) CO LTD
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