Patent ID: 9735192
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. A solid state imaging device, comprising: a semiconductor substrate comprising a light sensing section and comprising a first surface and a second surface opposite to the first surface, wherein the first surface is on a light incident side of the semiconductor substrate; a wiring layer on the second surface; and at least three layers over the first surface, the three layers comprising a first layer, a second layer and a third layer, wherein the first layer and the third layer are insulating layers, and the second layer comprises a material selected from halfnium oxide (HfO wherein the second layer is disposed between the first layer and the third layer, wherein the light sensing section includes at least a first light receiving surface and a second light receiving surface and a pixel separating region, wherein the pixel separating region is disposed between the first light receiving surface and the second light receiving surface in a plan view, and wherein at least the first layer is disposed over the first light receiving surface, the second light receiving surface, and the pixel separating region.