Patent ID: 7884392

Claim:
An image sensor comprising: a substrate having a front surface and a rear surface, wherein the front surface of the substrate includes a first region and a second region, wherein the rear surface of the substrate includes a first region, a second region, and a third region, and wherein the second region of the front surface of the substrate is opposite the second region of the rear surface of the substrate; a photoelectric converting portion located in the first region of the front surface of the substrate; a through via extending through the substrate, wherein the through via is electrically connected to the photoelectric converting portion, and is located in the second region of the rear surface of the substrate; a connection pad located in the second region of the front surface of the substrate, wherein the connection pad is electrically connected to the photoelectric converting portion, and wherein a width of the connection pad defines the boundaries of the second region of the rear surface of the substrate; an external connection terminal located in the third region of the rear surface of the substrate, wherein the external connection terminal is connected to the through via; and a light shading layer formed at least in the first region of the rear surface of the substrate, wherein the light shading layer is substantially opaque with respect to an external light, and wherein the light shading layer is also formed in the second region of the rear surface of the substrate, such that the light shading layer extends through part of the second region of the rear surface of the substrate, but does not extend entirely throughout the second region of the rear surface of the substrate.