Patent ID: 8054371
Filing Date: 2011-11-08
Classification: G02B

Abstract:
1. An image sensor device, comprising: a semiconductor substrate having a front surface and a back surface; a plurality of pixels formed on the front surface of the semiconductor substrate; a plurality of grid arrays aligned with one of the plurality of pixels, each grid array having first portions in a first direction and second portions in a second direction perpendicular to the first direction; wherein one of the plurality of grid arrays is configured to allow only a selected waveband of light to pass through to the corresponding one of the plurality of pixels, wherein the selected waveband of light is of a type selected from the group consisting of: red light, green light, and blue light, wherein the one of the plurality of grid arrays includes at least one opening defined by the first and second portions, wherein the at least one opening has a width that is equal to one-half of a wavelength of light within the selected waveband so that maximum transmission occurs with respect to the selected waveband.