Patent ID: 8502902
Filing Date: 2013-08-06
Classification: G06F,H01L,H04N

Abstract:
1. A semiconductor device comprising: a first photo sensor in a pixel; a transistor in the pixel, wherein the transistor is electrically connected to a pixel electrode; a second photo sensor out of the pixel; a controller for setting a drive condition of the first photo sensor in accordance with intensity of light obtained by the second photo sensor; and a light-blocking film overlapping with the first photo sensor and the transistor, wherein sensitivity of the first photo sensor is changed in accordance with the drive condition, wherein the first photo sensor includes a semiconductor layer, the semiconductor layer including a first region including an impurity element which imparts n-type conductivity and a second region including an impurity element which imparts p-type conductivity, and wherein the first region and the second region are over and in contact with a same surface.