Solid image pickup device having microlenses

Details Solid image pickup device having microlenses Solid image pickup device having microlenses

1991-02-04

1993-08-24

Hannaher, Constantine

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

359620, 359621, 359622, H01L 310232

Patent

active

052394123

ABSTRACT:
In a solid image pickup device, a plurality of microlenses are provided on a substrate having light receiving portions in opposition to the light receiving portions so that incident light can converge onto the light receiving portions. The microlenses are covered with a transparent resin layer having a refractive index smaller than that of the microlenses. Therefore, the solid image pickup device, even when packaged in a molded body made of a resin having a refractive index similar to that of the microlenses, can realize good sensitivity because the microlenses can effectively operate as condenser lenses due to the resin layer between the molded body and the microlenses.

REFERENCES:
patent: 1943995 (1934-01-01), Weld
patent: 3018313 (1962-01-01), Gattone
patent: 3383676 (1968-05-01), Nagel
patent: 3984583 (1976-10-01), Hermans et al.
patent: 4129628 (1978-12-01), Tamutus
patent: 4667092 (1987-05-01), Ishihara
patent: 4695719 (1987-09-01), Wilwerding
patent: 4807978 (1989-02-01), Grinberg et al.
patent: 5104435 (1992-04-01), Oikawa et al.
"On-Chip Color Filter for CCD Imagers," National Technical Report, vol. 36, No. 3, Jun., 1990.
Nikkei Microdevices, pp. 87-94, Jun., 1990.

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