Patent ID: 11953719
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical device comprising:
a substrate;
a first optical layer on the substrate, wherein the first optical layer comprises a top surface, a first sidewall and a second sidewall opposite to the first sidewall;
a high k layer disposed on the top surface of the first optical layer, wherein the high k layer comprises a fifth sidewall and a sixth sidewall opposite to the fifth sidewall, wherein the fifth sidewall is coplanar with the first sidewall and the sixth sidewall is coplanar with second sidewall; and
a second optical layer on the high k layer, wherein the second optical layer comprises a top surface, a third sidewall and a fourth sidewall opposite to the third sidewall, wherein the first sidewall of the first optical layer is misaligned with the third sidewall of the second optical layer, and wherein the second sidewall of the first optical layer is coplanar with the fourth sidewall of the second optical layer.