Patent ID: 11948950
Assignee: STMICROELECTRONICS (CROLLES 2) SAS
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. An image acquisition device, comprising:
a semiconductor substrate including a first region with digital circuits and a second region with photodetection circuits, said semiconductor substrate including a back surface;
an opaque conductive layer on the back surface in the first region;
a matrix of color filters on the back surface in the second region;
an organic material layer covering the opaque conductive layer in the first region;
at least one layer made from an inorganic dielectric material that covers the matrix of color filters in the second region and covers the organic material layer in the first region; and
a transparent material layer that covers the at least one layer made from the inorganic dielectric material in both the first and second regions, said transparent material layer shaped to form microlenses in the second region positioned over the matrix of color filters.