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Manufacture of thin-membrane transistor of liquid-crystal displaying device

A thin film transistor, liquid crystal display technology, applied in transistors, static indicators, instruments, etc., can solve problems such as high price

Active Publication Date: 2005-07-27
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main disadvantage of TFT LCD is that it is expensive, so that it has not been popularized in the market, especially in the lithography step process of the thin film transistor array of the liquid crystal display, so the number of required masks is effectively reduced as much as possible, which is currently Problems to be solved

Method used

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  • Manufacture of thin-membrane transistor of liquid-crystal displaying device
  • Manufacture of thin-membrane transistor of liquid-crystal displaying device
  • Manufacture of thin-membrane transistor of liquid-crystal displaying device

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Embodiment Construction

[0043]The method for manufacturing a thin film transistor liquid crystal display using a three-pass photomask process of the present invention preferably includes forming a plurality of external peripheral lines composed of the transparent conductive layer on the periphery of the pixel area, one end of which is electrically connected to the data signal line or the scanning signal line, The other end is connected with a driving circuit to control the signal of the data signal line or the scanning signal line, and the external peripheral circuit of the data signal line and the external peripheral circuit of the scanning signal line may have the same or different structures. In addition, after forming the transparent conductive layer and before forming the first insulating layer, it is preferable to form the first metal layer again, so that a light-shielding layer formed by the first metal layer is also included in the thin film transistor region, so as to prevent the thin film tra...

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Abstract

A method for preparing liquid crystal display by includes forming transparent conductive layer, the first insulation layer and the second metal layer in sequence on transparent backing; forming wire regions of source electrode, drain electrode and picture element electrode as well as forming multiple data lines by yellow half image and etching; forming conductive layer and the second insulation line on backing; forming channels and holes on said wire regions by etching and forming the third metal layer and insulation layer on backing to form scan signal line and grating by etching.

Description

technical field [0001] The invention relates to a method for manufacturing a thin film transistor liquid crystal display, in particular to a method for manufacturing a thin film transistor liquid crystal display using a three-pass photomask process. Background technique [0002] Compared with traditional image tube monitors, liquid crystal displays have the advantages of low power consumption, small size and no radiation. The liquid crystal display can be divided into various specifications according to the principle of its action on the liquid crystal, but it can be mainly divided into the early passive matrix type (Passive Matrix LCD, PM LCD) and the current mainstream active matrix type (Thin Film Transistor LCD, TFT LCD). ) two specifications, PM LCD can also be divided into three types: TN (Twisted Nematic), STN (SuperTwisted Nematic), DSTN (Double layer Twisted Nematic). The main difference between these two specifications is that the arrangement of LCD liquid crystal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G02F1/136H01L21/00H01L29/786
Inventor 陈宏德
Owner AU OPTRONICS CORP