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US07674658B2 Semiconductor device and manufacturing method thereof 有权
半导体装置及其制造方法

Semiconductor device and manufacturing method thereof
Abstract:
A semiconductor device and a manufacturing method thereof are provided. The manufacturing method can form a structure of a thin film transistor (TFT) having a symmetric lightly doped region, and thus provide superior operation reliability and electrical performance. In addition, the manufacturing method forms gate patterns of different TFTs by the same mask process and thereby avoids the misalignment of masks so as to improve the processing yield and reduce the manufacturing cost.
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