Patent ID: 8537255

Claim:
An image sensor, comprising: a semiconductor substrate; first and second photo detecting elements in the semiconductor substrate, the first and second photo detecting elements being configured to convert incident light into at least one electric signal; a backside dielectric layer on the semiconductor substrate, the backside dielectric layer being on a back surface of the semiconductor substrate; a photo blocking region in the backside dielectric layer, the photo blocking region being on a region of the semiconductor substrate that is at least one of between and adjacent to the first and second photo detecting elements, and the photo blocking region including, one or more metal lines, and a contact configured to electrically connect the one or more metal lines to the semiconductor substrate, the contact being configured to discharge holes in the semiconductor substrate through the one or more metal lines; first and second color filters on the backside dielectric layer, the first and second color filters corresponding to the first and second photo detecting elements; first and second micro lenses on the first and second color filters, the first and second micro lenses corresponding to the first and second photo detecting elements; a front side dielectric layer on a front surface of the semiconductor substrate; and at least one gate structure in the front side dielectric layer, the at least one gate structure being configured to transfer and amplify the at least one electric signal.