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TFT-LCD (thin film transistor-liquid crystal display) device and repair method thereof

A liquid crystal display device and thin film transistor technology, which is applied in semiconductor/solid-state device manufacturing, instruments, optics, etc., can solve problems such as low repair success rate, and achieve the effect of avoiding pollution and improving repair success rate.

Active Publication Date: 2013-09-11
深圳市海云通信有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a thin film transistor liquid crystal display device and its repair method, to solve the problem of low repair success rate of the existing thin film transistor liquid crystal display device

Method used

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  • TFT-LCD (thin film transistor-liquid crystal display) device and repair method thereof

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Embodiment 1

[0041] This embodiment discloses a thin film transistor liquid crystal display device, including:

[0042] A substrate, a first metal layer on the surface of the substrate, a gate line disposed on the first metal layer, a gate insulating layer on the surface of the first metal layer, and a gate insulating layer on the surface of the gate insulating layer The semiconductor layer on the upper surface, the second metal layer on the surface of the semiconductor layer, the data line, the source electrode and the drain electrode arranged on the second metal layer, the data line is electrically connected to the source electrode, and the source electrode Set opposite to the drain, a passivation layer on the surface of the second metal layer, a transparent conductive layer on the surface of the passivation layer, a pixel electrode on the transparent conductive layer, the gate line and The data lines are vertically arranged to form a plurality of sub-pixels, the pixel electrodes are res...

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Abstract

The invention discloses a TFT-LCD device and a repair method thereof. The device is provided with a bulge on an overlapping area of a pixel electrode and a gate line, and the bulge is completely or partially overlapped with the gate line; a repair mark is arranged on the gate line, is far from a light-transmitting area of the pixel electrode, and overlapped with the bulge. The repair method comprises the step of laser-welding the position indicated by the repair mark in the pixel to enable the gate line to be electrically connected with the pixel electrode. In a process for repairing bright spots of the TFT-LCD device, the position of a repair point can be judged accurately according to the repair mark, and further, the bulge of the pixel electrode and the repair mark are far from the light-transmitting area of the pixel electrode, so that the repair point can be as far as possible from the light-transmitting area of the pixel in the bright spot repairing process, accordingly, light leakage at the pixel edge caused by pollution in the pixel or melt away of metal by the laser is avoided, and the repair success rate is improved.

Description

technical field [0001] The invention belongs to the field of liquid crystal display, in particular to a thin film transistor liquid crystal display device and a repair method thereof. Background technique [0002] In the process of making thin film transistor liquid crystal display (TFT-LCD, Thin Film Transistor-Liquid Crystal Display), due to the quality of film formation, the cleanliness of the environment, the design of the device itself and the equipment itself, it is not possible to Avoiding problems such as impurity particles and film shedding, which will lead to problems such as abnormal drive of pixel signals and pixel defects. When these problems appear at any point in the display area, the display quality of the thin film transistor liquid crystal display device will be greatly reduced. The existing solution is generally to make the bright spot defects into dark spots by laser repair after making the liquid crystal cell and powering on the test. [0003] The spec...

Claims

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Application Information

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IPC IPC(8): G02F1/1362G02F1/1368G02F1/13H01L21/77
Inventor 梁艳峰
Owner 深圳市海云通信有限公司
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