Color sensor having improved uniformity of sensitivity

Details Color sensor having improved uniformity of sensitivity Color sensor having improved uniformity of sensitivity

1988-03-17

1989-07-25

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250226, 357 30, H01J 4014

Patent

active

048516589

ABSTRACT:
A color sensor produced in accordance with the present invention comprises a colorless and transparent substrate; at least one color filter disposed on a main surface of the substrate; a colorless and transparent front electrode layer of transparent conductive oxides (TCO) formed on the opposite main surface of the substrate, corresponding to each of the filters; a semiconductor layer formed on the front electrode layer, wherein the interface between the front electrode layer and semiconductor layer is roughened to have a periodic unevenness thereby to decrease the reflectance of visible incident light at the interface; and a back electrode layer formed on the semiconductor layer.

REFERENCES:
patent: 4395629 (1983-07-01), Sasano et al.
patent: 4520381 (1985-05-01), Moriguchi et al.
patent: 4532537 (1985-07-01), Kane
patent: 4599482 (1986-07-01), Yamazaki

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