Patent ID: 11923388
Assignee: SK HYNIX INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensing device, comprising:
a semiconductor substrate;
a plurality of photoelectric conversion elements supported by the semiconductor substrate, each photoelectric conversion element configured to generate an electrical signal corresponding to incident light by performing a photoelectric conversion of the incident light;
a plurality of color filters disposed over the semiconductor substrate to filter the incident light to be received by the photoelectric conversion elements; and
a grid structure disposed between the color filters and structured to include asymmetric sidewalls that are shaped based on colors of adjacent color filters among the plurality of color filters,
wherein the asymmetric sidewalls include a first metal layer that has a first reflectivity and a second metal layer that has a second reflectivity lower than the first reflectivity, and
wherein the asymmetric sidewalls include:
a first sidewall including the first metal layer without the second metal layer; and
a second sidewall opposite to the first sidewall and including the second metal layer.