Patent ID: 7829908
Filing Date: 2010-11-09
Classification: G02B,H01L

Abstract:
1. A solid-state image sensor, comprising: an optical unit separating incident light into a plurality of color elements; an optical receiving unit comprising multiple pixels which convert respective color elements separated by said optical unit to corresponding electrical signals; and an anti-reflection film including a high-refractive-index layer having a refractive index of 1.7 or higher and a low-refractive-index layer having a refractive index of less than 1.7, the anti-reflection film being provided between the optical unit and said optical receiving unit for each of the pixels, wherein with respect to at least a first color element of the plurality of color elements, the anti-reflection film of the respective pixel comprises a quantity of at least two separate high-refractive-index layers and a quantity of at least two separate low-refractive-index layers; and with respect to a second color element of the plurality of color elements, the anti-reflection film of the respective pixel comprises a quantity of separate high-refractive-index layers and a quantity of separate low-refractive-index layers that are different from the respective quantities of high-refractive-index layers and low-refractive-index layers of the anti-reflection film of the pixel for the first color element.