| 摘要 |
PROBLEM TO BE SOLVED: To improve optical detection accuracy in a photosensor, and to widen a light receiving area of the photosensor.SOLUTION: A photosensor comprises: a light receiving element that converts light into an electric signal; a first transistor that transfers the electric signal; and a second transistor that amplifies the electric signal. The light receiving element is formed by using a silicon semiconductor, and the first transistor is formed by using an oxide semiconductor. In addition, the light receiving element is a lateral junction type photodiode, and an n-layer or a p-layer included in the light receiving element, and the first transistor are formed so as to be overlapped with each other.SELECTED DRAWING: Figure 19 |
