Patent ID: 11881495
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 8:
9. An imaging device, comprising:
a semiconductor substrate having a first surface that receives light and a second surface opposite to the first surface;
a first photoelectric conversion region disposed in the semiconductor substrate;
a second photoelectric conversion region disposed in the semiconductor substrate and adjacent to the first photoelectric conversion region;
a first color filter region disposed over the first photoelectric conversion region, the first color filter region including a top surface and a bottom surface;
a second color filter region disposed over the second photoelectric conversion region, the second color filter region including a top surface and a bottom surface;
a separation region disposed between the first color filter region and the second color filter region, the separation region including a metal film and an insulating film; and
a microlens formed over the first and second color filter regions,
wherein the metal film extends from the bottom surfaces of the first and second color filter regions toward the top surfaces of the first and second color filter regions to a height less than midway a height of the first and second color filter regions in a cross-sectional view,
wherein the insulating film extends to a height greater than half a height of the first and second color filter regions in the cross-sectional view, and
wherein the insulating film extends to top surfaces of the first and second color filter regions abutting the microlens without extending into the microlens in the cross-sectional view.