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Plane display device panel

A flat-panel display and panel technology, used in static indicators, instruments, optics, etc., can solve problems such as affecting the speed and accuracy of testing and increasing the manufacturing cost of liquid crystal display panels.

Inactive Publication Date: 2005-05-25
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, too many test signal pins will greatly increase the manufacturing cost of the LCD panel, but too few test pins will affect the speed and accuracy of the test under the common test structure

Method used

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  • Plane display device panel
  • Plane display device panel
  • Plane display device panel

Examples

Experimental program
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Embodiment Construction

[0021] See figure 2 , which is a functional block diagram of a preferred embodiment developed by the present invention. Similarly, the panel 2 of the present invention has a pixel matrix 20 in the central part, and a horizontal scanning circuit 211 and a vertical scanning circuit 211 are arranged around the pixel matrix 20. The display control circuit 21 constituted by the circuit 212 . The feature of the present invention is that an embedded test circuit 22 is added on the panel 2 , and the embedded test circuit 22 and other components are jointly arranged on the transparent substrate 23 .

[0022] see you again image 3 , which is a functional block diagram of the embedded test circuit 22 in the preferred embodiment above, which is mainly implemented by a combinational logic circuit 31, which can receive several shift register groups 301, . . . . , 30n and a number of output signals respectively issued by the display driving logic circuit 40 built in the panel for judgmen...

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PUM

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Abstract

The invention relates to a flat display panel, which includes the following components: a substrate; a pixel matrix arranged on the substrate; a display control circuit arranged on the substrate and electrically connected to the pixel matrix, which controls the pixels The matrix is ​​turned on and off; and an embedded test circuit is arranged on the substrate and electrically connected to the display control circuit, which tests the display control circuit and outputs a test result to the outside of the panel.

Description

technical field [0001] The invention relates to a display device, in particular to a flat display panel with an embedded test circuit. Background technique [0002] See figure 1 , which is a functional block diagram of a current common thin film transistor liquid crystal display panel, the central part has a pixel matrix 10, and the pixel matrix 10 is surrounded by horizontal scanning circuits 11 and vertical scanning circuits 12 (if the size of the pixel matrix 10 If it is very large, horizontal scanning circuits must be provided on both sides to have sufficient driving force), and a driver integrated circuit 13 (driver IC) arranged outside the panel 1 passes through several signal wires 14 (usually a soft row line) is connected with the panel to transmit a driving signal to the panel, and then drive the panel to display. [0003] Due to the advancement of thin film transistor manufacturing technology, the vertical scanning circuit 11 and horizontal scanning circuit 12 or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/136G09G3/36H01L29/786
Inventor 邱昌明
Owner TPO DISPLAY