High resistance optical shield for visible sensors

Details High resistance optical shield for visible sensors High resistance optical shield for visible sensors

1985-02-27

1990-07-10

Moskowitz, Nelson

357 31, H01L 2714, H01L 3100

Patent

active

049410296

ABSTRACT:
An improved light shield for selectively shielding selected light sensitive elements in a visible sensor semiconductor device from incident light comprising a layer of high resistance semiconductor material carried upon the surface of the semiconductor substrate. The high resistance semiconductor material is selected to have a band gap narrower than the silicon semiconductor material it is shielding in order to substantially absorb light which would otherwise fall upon the shielded photosensitive elements.

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patent: 4148048 (1979-04-01), Takemoto et al.
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patent: 4467341 (1984-08-01), Suzuki
patent: 4532536 (1985-07-01), Hatanaka et al.
patent: 4549195 (1985-10-01), Bluger

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