Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal – Including integrally formed optical element
Patent
1997-11-26
2000-05-30
Dutton, Brian
Semiconductor device manufacturing: process
Making device or circuit emissive of nonelectrical signal
Including integrally formed optical element
438158, H01L 2100, H01L 2184
Patent
active
060690194
ABSTRACT:
According to the present invention, a gate insulation film, a silicon film and silicon nitride film are laminated on a gate backing pad made of a gate metal film, and etching is carried out on the silicon nitride film such that it remains on the gate backing pad as a protective insulation film. Thus, the corrosion of the gate backing pad, which is caused as the etching solution penetrate the silicon film in defect, can be prevented. Further, a protective semiconductor layer formed by patterning the protective insulation film and the silicon film, is formed above the gate backing pad. Thus, the gate backing pad can be protected from the etching solution during the patterning of the pixel electrode made of ITO. Therefore, the disconnection of the gate backing pad can be prevented.
REFERENCES:
patent: 5334859 (1994-08-01), Matsuda
Ishii Hiromitsu
Tosaka Hisao
Casio Computer Co. Ltd.
Dutton Brian
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