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Liquid crystal display and detection method thereof

A liquid crystal display and detection method technology, applied in static indicators, instruments, nonlinear optics, etc., can solve the problem of low detection accuracy of dead pixels of liquid crystal display panels, and achieve the effect of improving accuracy

Inactive Publication Date: 2014-01-15
FU TAI HUA IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem that the detection accuracy of dead pixels in the prior art liquid crystal display panel is not high, it is necessary to provide a liquid crystal display that can improve the detection accuracy of dead pixels

Method used

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  • Liquid crystal display and detection method thereof
  • Liquid crystal display and detection method thereof
  • Liquid crystal display and detection method thereof

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] see figure 1 , which is a schematic diagram of an equivalent circuit of a preferred embodiment of the liquid crystal display of the present invention. The liquid crystal display 1 includes a liquid crystal display panel 10 and a driving circuit 20 .

[0022] The liquid crystal display panel 10 includes a plurality of scanning lines 13 parallel to each other, a plurality of data lines 14 that are parallel to each other and vertically insulated and intersected with the scanning lines 13, and a plurality of data lines 14 formed by the intersection of the plurality of scanning lines 13 and the plurality of data lines 14. The pixel unit 16 defined by the smallest rectangular area.

[0023] Each pixel unit 16 includes a thin film transistor 15 and a liquid crystal capacitor 17 . Each thin film transistor 15 includes a gate 151, a source 152 and a drain 153, the gate 151 is connected to a corresponding scanning line 13, the source 152 is connected to a corresponding data lin...

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Abstract

The invention relates to a liquid crystal display and a detection method thereof. The liquid crystal display comprises a liquid crystal display panel and a drive circuit. The drive circuit drives the liquid crystal display panel to display images. The drive circuit comprises a control unit, a scan driving circuit, a data driving circuit and a detection circuit. The scan driving circuit and the data driving circuit exert a scanning impulse and a testing impulse respectively on a pixel unit defined by a scanning line and a data line in the liquid crystal display panel. The testing impulse comprises first voltage. The detection circuit is electrically connected with the data line. In second preset time after the scanning impulse and the testing impulse are output to the pixel unit, the control unit controls the detection circuit to detect the voltage of the data line. When the voltage on the data line is smaller than the first voltage, display of the pixel unit is indicated to be normal, and otherwise the pixel unit is indicated to be damaged.

Description

technical field [0001] The invention relates to a liquid crystal display and a detection method thereof, in particular to a liquid crystal display for automatically detecting dead pixels and a detection method thereof. Background technique [0002] Liquid crystal displays have been widely used in electronic devices such as TVs, laptops, mobile phones, and personal digital assistants due to their small size, light weight, thin thickness, low power consumption, no flickering, and low radiation. [0003] A liquid crystal display generally includes a liquid crystal display panel and a driving circuit for driving the liquid crystal display panel to work normally. The liquid crystal display panel generally includes a thin film transistor, a common electrode, a pixel electrode, and a plurality of liquid crystal molecules that are driven and twisted by the common electrode and the pixel electrode. When the thin film transistor applies the grayscale voltage received from the drive c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1362G02F1/13
CPCG09G3/006G09G3/3648
Inventor 王引战
Owner FU TAI HUA IND SHENZHEN
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