发明名称 |
Preparation Method of Poly-Silicon TFT Array Substrate and Array Substrate Thereof |
摘要 |
A preparation method of a poly-silicon thin film transistor (TFT) array substrate and an array substrate thereof are provided. The preparation method includes: forming a photoresist layer on a poly-silicon layer, and exposing and developing the photoresist layer with a gray tone mask to form patterns of a photoresist completely-reserved region, a photoresist partially-reserved regions and a photoresist completely-removed region; removing part of the poly-silicon layer located in the photoresist completely-removed region, to form patterns of active layers; ashing the photoresist so as to expose part of the active layer located in the photoresist partially-reserved regions and inject P+ions of high concentration into the part of the active layer, to form doping regions of patterns of source-drain electrodes of a P-type TFT; and stripping off remaining photoresist. |
申请公布号 |
US2017110488(A1) |
申请公布日期 |
2017.04.20 |
申请号 |
US201615212871 |
申请日期 |
2016.07.18 |
申请人 |
BOE Technology Group Co., Ltd. |
发明人 |
Sun Shuang;Niu Jing;Zhang Fangzhen;Lv Zhijun |
分类号 |
H01L27/12;H01L29/66 |
主分类号 |
H01L27/12 |
代理机构 |
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代理人 |
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主权项 |
1. A preparation method of a poly-silicon thin film transistor (TFT) array substrate, comprising:
forming patterns of light-shielding layers and a poly-silicon layer on a base substrate by a first patterning process; performing a second patterning process, to form a photoresist layer on the poly-silicon layer, and exposing and developing the photoresist layer with a gray tone mask to form patterns of a photoresist completely-reserved region, a photoresist partially-reserved regions and a photoresist completely-removed region; removing part of the poly-silicon layer located in the photoresist completely-removed regions to form patterns of active layers; ashing the photoresist so as to expose part of the active layers located in the photoresist partially-reserved regions and inject P+ions of high concentrations into the part of the active layers, to form doping regions of patterns of source-drain electrodes of a P-type TFT; and stripping off remaining photoresist. |
地址 |
Beijing CN |