Patent ID: 7868366

Claim:
An image sensor, comprising: a second semiconductor substrate including a second metal interconnection and a second interlayer dielectric; a second via penetrating the second interlayer dielectric so that the second via is connected to the second metal interconnection; a first semiconductor substrate on the second interlayer dielectric, the first semiconductor substrate having a unit pixel; a pre-metal dielectric on the first semiconductor substrate; a first via penetrating the pre-metal dielectric and the first semiconductor substrate, the first via being connected to the second via; a first interlayer dielectric on the pre-metal dielectric including the first via; a first metal interconnection on the first interlayer dielectric and connected to the first via and the unit pixel; a conductive barrier layer on the first metal interconnection; and a color filter and a microlens on the first interlayer dielectric on the unit pixel.