Solid state image sensor provided with a transparent resin layer

Details Solid state image sensor provided with a transparent resin layer Solid state image sensor provided with a transparent resin layer

1993-09-15

1995-12-26

Ngo, Ngan V.

Active solid-state devices (e.g., transistors, solid-state diode

With means to control surface effects

Insulating coating

257232, 257233, 257432, 257435, 257437, 257440, 257788, 257789, H01L 2934, H01L 2714, H01L 3100

Patent

active

054790492

ABSTRACT:
A first transparent protection layer is formed on color filters, and micro lenses are further formed on the first transparent protection layer. Then unevenness due to the micro lenses is flattened by a first transparent resin layer which has water repellency and oil repellency (low surface energy), a high transmittance in visible light range, a high flattening capability in a coating process, and a refractive index lower than the refractive index of the micro lenses. With the above-mentioned arrangement, dust or the like can be difficult to contaminate the surface of the solid state image sensor without loosing the light converging effect of the micro lenses. Even when dust or the like attaches to the surface, it can be easily removed with a cotton swab or the like.

REFERENCES:
patent: 4781844 (1988-11-01), Kortmann et al.
patent: 4841348 (1989-06-01), Shizukuishi et al.
patent: 5239412 (1993-08-01), Naka et al.
T. Aoki, et al., "Solid State Image Sensor", Excerpt on which the exceptions of lack of novelty under Sec. 1 of Art 30 of the Japanese Patent Law is claimed for Japanese Patent Appln. No. 5-14515 (with translation).

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