Patent
1988-12-16
1991-05-07
Wojciechowicz, Edward J.
357 55, 357 68, H01L 2714
Patent
active
050141007
ABSTRACT:
A contact image sensor for use in facsimile machines is described. A light window is opened through a photosensitive semiconductor film deposited on a glass sustrate. Light rays are passed through the light window, reflected on an original and absorbed by the semiconductor film in order to produce image signals containing visual information of the original. Provided on the light incident side of the semiconductor film is a light blocking electrode which prevents incident light rays from directly entering the semiconductor film therethrough without reflection on the original. The opposing electrode formed on the other side of the semiconductor film is made of a transparent film covering the side surface of the light window. The opposing electrode on the side surface functions to eliminate noise signals caused by undesirable light rays incident through the side surface, which otherwise, would deteriorate the output signals of the image sensor.
REFERENCES:
patent: 4518815 (1985-05-01), Yamazaki
Amachi Nobumitsu
Codama Mitsufumi
Fukada Takeshi
Sakama Mitsunori
Sakamoto Naoya
Semiconductor Energy Laboratory Co,. Ltd.
Wojciechowicz Edward J.
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