Image sensor free from undesirable incident light rays having a

Details Image sensor free from undesirable incident light rays having a Image sensor free from undesirable incident light rays having a

1989-01-25

1990-11-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

35821313, H01J 4014

Patent

active

049703820

ABSTRACT:
An improved image sensor is described. The image sensor is produced with a light window by removing a portion of a photosensitive laminate structure by projection of a laser beam. The laminate structure comprises a light blocking electrode, a semiconductor film and an opposed electrode formed on a transparent substrate in this order. Because of differences in laser scribing effectiveness at different depths, the laminate structure is partially removed in a somewhat conical form and therefore the light blocking electrode extends beyond the semiconductor film.

REFERENCES:
patent: 4189753 (1980-02-01), Parsons et al.
patent: 4660095 (1987-04-01), Cannella et al.

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