Solid state camera element

Details Solid state camera element Solid state camera element

1997-11-18

2000-05-16

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

25037011, 2504831, G01J 158

Patent

active

060640693

ABSTRACT:
A solid state camera element having photodiode provided on a matrix and shielding film formed in the layer above the circumference of photodiode, wherein fluorescence film is provided in the layer above any one of photodiodes or in the layer above photodiode, extending from the top surface to the lower layer of shielding film. Interference filter of one or multiple layers is provided in the layer above fluorescence film for transmitting an absorption wavelength and reflecting a luminescence wavelength of the fluorescence film. Also, N well of photodiode is formed deep in the substrate and the peak wavelength of sensitivity is shifted to a longer wavelength side from the normal setting peak value of 550 nm. Therefore, the present invention can enhance the blue sensitivity of the solid state camera element by using fluorescent pigment without causing cross talk with a neighboring photodiode.

REFERENCES:
patent: 4051374 (1977-09-01), Drexhage et al.
patent: 5294288 (1994-03-01), Melpoder et al.
patent: 5351081 (1994-09-01), Matsui et al.
patent: 5510627 (1996-04-01), Snow
patent: 5514888 (1996-05-01), Sano et al.

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