Patent ID: 11955501
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A method for forming an image-sensing structure, comprising:
forming a spacer on a sidewall of an opening in a substrate;
implanting a dopant into a bottom of the opening to form an implant layer in contact with the spacer;
epitaxially growing a crystalline layer on the implant layer and in contact with the spacer;
epitaxially growing a multi-faceted radiation-sensing region on the crystalline layer and in contact with the spacer; and
forming a multi-faceted stack structure, comprising:
depositing a first layer with a first refractive index on the multi-faceted radiation-sensing region; and
depositing a second layer with a second refractive index different from the first refractive index on the first layer.