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Liquid crystal display and method of repairing the same

A liquid crystal display, repair line technology, applied to static indicators, instruments, cleaning carpets, etc., can solve the problem that it is not easy to repair the gate drive circuit

Inactive Publication Date: 2007-07-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a fault occurs in the gate driving circuit, it is not easy to repair the gate driving circuit since the gate driving circuit is directly formed on the display panel

Method used

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  • Liquid crystal display and method of repairing the same
  • Liquid crystal display and method of repairing the same
  • Liquid crystal display and method of repairing the same

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Embodiment Construction

[0009] Throughout the specification, the same reference numerals denote the same elements. Referring to the plan view of the liquid crystal display shown in FIG. 1, the LCD 100 includes an LCD panel 30, and the LCD panel 30 includes a first substrate 10, a second substrate 20 opposite to the first substrate 10, and a substrate between the first substrate and the second substrate. intervening liquid crystal layer (not shown). The LCD panel 30 includes a display area DA displaying an image, and first and second peripheral areas PA1 and PA2 adjacent to the display DA. In the display area DA, a plurality of gate lines GL1-GLn extend along a first direction D1 and a plurality of data lines DL1-DLm extend along a second direction D2 perpendicular to the first direction D1. The pixel regions are formed in a matrix defined by intersecting gate and data lines.

[0010] In the display area DA, a plurality of repair lines RL1-RLn are parallel to a plurality of gate lines GL1-GLn. Each...

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Abstract

A liquid crystal display (LCD) having a working and a redundant shift register for driving the gate lines of the display. A plurality of repair lines RL 1 -RLn run in parallel with the plurality of gate lines GL 1 -GLn between the working shift register whose stages are arranged to one side of the display and the redundant shift register whose stages are arranged on the opposite side of the display. Initially the repair lines are not connected to either of the shift registers and the gate lines are only connected to the outputs of the working shift register. Both the working and the redundant shift register are connected to receive the same input driving signals. When a defect is discovered in the working shift register, a laser beam is used to disconnect the output of the defective shift register stage from its gate line. A laser beam is then used to connect end of the repair line to receive the input signal for the defective stage and connect the other end of the repair line to deliver the input signal to the input terminal of the corresponding stage of the redundant shift register. The output terminal of the corresponding stage of the redundant shift register is connected to normally unconnected end of the gate line from the defective stage so as to deliver output to the stage of working register following the defective stage.

Description

technical field [0001] The present invention relates to a display device and its repairing method, more specifically, to a liquid crystal display (LCD) and its repairing method. Background technique [0002] A liquid crystal display device generally includes a display panel; a gate driving circuit for driving the display panel; and a source driving circuit for outputting image signals to the display panel. The gate driving circuit and the source driving circuit may be disposed in the display panel in the form of a tape carrier package (TCP) or a chip on glass (COG). The gate driving circuit may be directly formed in the display panel. Such a structure in which a gate driving circuit is directly formed in a display panel includes a shift register including a plurality of stages cascaded to each other. A gate driving circuit according to the prior art is directly formed on a display panel having a plurality of amorphous silicon thin film transistors (hereinafter sometimes re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G09G3/36
CPCG09G2330/08G09G3/3677A47L13/225A47L13/44A47L2601/04
Inventor 张钟雄
Owner SAMSUNG ELECTRONICS CO LTD
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