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GOA circuit repairing method

A repair method and circuit technology, applied to static indicators, instruments, etc., can solve problems such as damage, relatively high manufacturing process, and requirements

Active Publication Date: 2015-07-08
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of GOA technology applied to liquid crystal displays is to reduce costs, but at the same time it also has relatively high requirements for manufacturing processes
The process of making GOA circuits is prone to damage, and GOA circuits are difficult to repair after damage, which greatly affects the yield of GOA products, which does not meet the original intention of using GOA technology to reduce production costs

Method used

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Examples

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no. 1 example

[0064] First, a plurality of cascaded GOA unit circuits, a repair signal Repair signal, and a repair signal line L1 electrically connected to the repair signal Repair signal are provided;

[0065] Wherein, each level of GOA unit circuit includes a pull-up control module 100, a pull-up module 200, a downlink module 300, a first pull-down module 400, a bootstrap capacitor 500, and a pull-down maintenance module 600;

[0066]Assuming that N is a positive integer, in the Nth-level GOA unit circuit, the pull-up control module 100 includes an eleventh thin film transistor T11, and the gate of the eleventh thin film transistor T11 receives For the scanning control signal ST(N-1) of the GOA unit circuit, the source is electrically connected to the constant voltage high potential DCH, and the drain is electrically connected to the first node Q(N); the downlink module 300 outputs the Nth + the scanning control signal ST(N) of the GOA unit circuit of level 1; the pull-up module 200 outpu...

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Abstract

The invention provides a GOA circuit repairing method. Through a repairing signal line (L1), Repair signals are connected into an <N>th-level and <N + 1>th-level GOA unit circuits and are used as output signals of the <N>th-level GOA unit circuit and scanning control signals of the <N + 1>th-level GOA unit circuit respectively to achieve repairing of the <N>th-level GOA unit circuit, or through a starting signal line (L5), starting signals (STV) are connected into the <N + 1>th-level GOA unit circuit and an <N + 2>th-level GOA unit circuit and are used as output signals of the <N + 1>th-level GOA unit circuit and scanning control signals of the <N + 2>th-level GOA unit circuit respectively to achieve repairing of the <N + 1>th-level GOA unit circuit respectively, meanwhile, through the repairing signal line (L1), Repair signals are connected into the <N + 2>th-level and <N + 3>th-level GOA unit circuits and are used as output signals of the <N + 2>th-level GOA unit circuit and scanning control signals of the <N + 3>th-level GOA unit circuit respectively to achieve repairing of the <N + 2>th-level GOA unit circuit, the repairing difficulty of the GOA circuits can be lowered, the yield of GOA products can be improved, and production cost is lowered.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA circuit repair method. Background technique [0002] A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter substrate (Color Filter, CF), and apply driving force on the two substrates. The voltage is used to cont...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/36G09G3/3677
Inventor 戴超
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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