Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-05-31
2005-05-31
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S044000, C349S138000, C349S187000, C257S059000
Reexamination Certificate
active
06900861
ABSTRACT:
The invention provides an electric optical apparatus and a manufacturing method thereof, in which, when forming a contact hole by wet etching to control an electric potential of a light-shielding layer, etching liquid does not infiltrate the bonding boundary between a supporting substrate and a semiconductor substrate. An electric optical apparatus includes a first insulator layer formed on an underside of a semiconductor layer, a second insulator layer formed on a side lower than the first insulator layer, a light-shielding layer formed between the first insulator layer and the second insulator layer, and a contact hole passing through at least the first insulator layer to the light-shielding layer. The light-shielding layer is located at a position upper than that of the bonding boundary between a supporting substrate and a semiconductor substrate.
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Chowdhury Tarifur R.
Oliff & Berridg,e PLC
Seiko Epson Corporation
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