US Patent Issued to STMicroelectronics (Crolles 2) on Oct. 28 for "Backside illumination image sensor and manufacturing method" (French Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,817, issued on Oct. 28, was assigned to STMicroelectronics (Crolles 2) SAS (Crolles, France).

"Backside illumination image sensor and manufacturing method" was invented by Maurin Douix (Grenoble, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "An integrated sensor includes a substrate made of a first semiconductor material having a first optical refractive index. The substrate includes a pixel array, wherein each pixel has a photosensitive active zone formed by an index contrast zone including a matrix of the first semiconductor material and a periodic structure embedded in the matrix. The periodic structure extends from the backside of the su...