发明名称 |
METHOD FOR FORMING POLY PLUG OF THIN FILM TRANSISTOR |
摘要 |
PURPOSE: A method for forming a poly plug of a thin film transistor is provided to enhance reliability of the thin film transistor by reducing a step difference without a loss of a poly plug. CONSTITUTION: An interlayer dielectric(32) is deposited on a substrate(31). A contact hole is formed by etching the interlayer dielectric(32). A polysilicon layer is deposited on the interlayer dielectric(32) including the contact hole. The thickness of the polysilicon layer is reduced by etching the polysilicon layer. A photoresist layer is deposited on the polysilicon layer. The photoresist layer is patterned by performing an exposing process and a developing process. A poly plug(33a) is formed by etching the polysilicon layer. A poly gate(35) and a gate oxide layer(36) are formed by depositing and etching a polysilicon layer and an oxide layer. A poly channel layer(37) is formed by depositing a silicon layer on the gate oxide layer(36). A part of the poly gate(35) is exposed by patterning the poly channel layer(37).
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申请公布号 |
KR20020058431(A) |
申请公布日期 |
2002.07.12 |
申请号 |
KR20000086536 |
申请日期 |
2000.12.30 |
申请人 |
HYNIX SEMICONDUCTOR INC. |
发明人 |
CHOI, YUN JE;LEE, JEONG UNG |
分类号 |
H01L21/28;(IPC1-7):H01L21/28 |
主分类号 |
H01L21/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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