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

Claim 0:
1. An image-sensing structure, comprising:
a stack structure, comprising:
a first layer with a first refractive index and a first thickness substantially equal to one fourth of a wavelength of an incident radiation divided by the first refractive index; and
a second layer with a second refractive index different from the first refractive index and a second thickness substantially equal to one fourth of the wavelength of the incident radiation divided by the second refractive index;

a radiation-sensing region comprising a first epitaxial layer disposed on the stack structure;
a second epitaxial layer in contact with a sidewall and a top surface of the radiation-sensing region; and
an implant layer in contact with a sidewall and a top surface of the second epitaxial layer.