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Manufacturing method for pixel structure of LCD

A technology of liquid crystal display and pixel structure, which is applied in the manufacture of semiconductor/solid-state devices, photoengraving process of pattern surface, and instruments, etc., can solve the problems of adverse effects of light transmittance in display area 135, high mask cost, and high manufacturing cost.

Active Publication Date: 2009-07-29
AU OPTRONICS CORP
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Problems solved by technology

[0006] However, due to the high cost of the mask, the more frequent the use of the mask, the higher the manufacturing cost; moreover, the manufacturing process of using the mask is more cumbersome, and the complex manufacturing process is likely to cause an increase in the product defect rate, which is difficult to meet the requirements of today's liquid crystal Display Manufacturing Requirements
In addition, there are still ineffective multi-layer structures on the display area 135 in the existing structure, and the light from the substrate 13 for display must pass through these structures before they can be used, even if these structures are made of transparent materials However, it will still have a negative impact on the light transmittance of the display area 135, resulting in relatively insufficient product competitiveness

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  • Manufacturing method for pixel structure of LCD
  • Manufacturing method for pixel structure of LCD
  • Manufacturing method for pixel structure of LCD

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Embodiment Construction

[0044] The invention is applied to a liquid crystal display, especially a low temperature polysilicon liquid crystal display (LTPS-LCD), wherein the liquid crystal display has a substrate on which a plurality of pixel regions and a plurality of pad regions are defined. figure 2 Shown is a schematic plan view of a pixel structure 2 formed by the manufacturing process of the present invention, and only one of the pixel regions is shown. figure 2 In the figure, a thin film transistor structure 31, a capacitor structure 33, a display structure 35, and a pad structure 37 located on the periphery of the substrate are shown, wherein the pad structure 37 is used to connect with a data line 21 for transmitting Or receive a voltage information, similarly, the scan line will also be connected to the corresponding pad structure.

[0045] The manufacturing method of the pixel structure of the liquid crystal display disclosed by the present invention is as follows in sequence Figure 3 to ...

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Abstract

The present invention is a manufacturing method of a pixel structure of a liquid crystal display. In the manufacturing process of the pixel structure, compared with the existing seven mask manufacturing process, the present invention only needs to use four mask manufacturing processes, so the manufacturing cost can be greatly reduced; in addition, during the manufacturing process, it can be removed together Unnecessary multi-layer structure on the display area to improve its light transmittance.

Description

technical field [0001] The invention relates to a method for manufacturing a pixel structure of a liquid crystal display; in particular, a method for manufacturing a pixel structure of a low-temperature polysilicon thin film transistor liquid crystal display (LTPS-TFTLD), which requires only four mask manufacturing processes. Background technique [0002] Due to the advantages of power saving, light weight, low radiation and easy portability, liquid crystal displays have become mainstream products in the display market. Among them, the technology of thin film transistor liquid crystal display (TFT-LCD) can be mainly divided into two types at present: amorphous silicon (Amorphous Silicon, abbreviated as α-Si) and polycrystalline silicon (Poly-Si). In polysilicon LCD technology, low temperature polysilicon (Low Temperature PolySilicon, LTPS) is a new generation of manufacturing technology. Compared with traditional amorphous silicon liquid crystal display, the transistor carri...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1362H01L27/12H01L21/027H01L21/203H01L21/00G03F7/00
Inventor 李振岳
Owner AU OPTRONICS CORP