Patent ID: 6069378
Filing Date: 2000-05-30
Classification: H01L,Y10T

Abstract:
A photo sensor integrated circuit comprising:photoelectric transfer means for converting received light into photoelectric current when subjected to solar radiation;signal processing means for processing the photoelectric current of said photoelectric transfer means; anda semiconductor substrate for integrating said photoelectric transfer means and said signal processing means as one chip component, said semiconductor substrate including a shielding film covering a circuit element that is part of said signal processing means;wherein an amount of the substrate covered by the shielding film L (.mu.m) satisfies the following relationship so as to eliminate malfunction of the signal processing means which may be induced by diffusion of incoming light reaching from outside said shielding film ##EQU7## where Io represents a current generated in said circuit element when subjected to 100,000 lux light irradiation without said shielding film, which Imal(min) represents a minimum current of said circuit element which induces malfunction in said signal processing means under the 100,000 lux light irradiation.