| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve accuracy of light detection in a photo-sensor, and to increase light-receiving area of the photo-sensor.SOLUTION: A photo-sensor comprises: a light-receiving element for converting light into an electric signal; a first transistor for transferring the electric signal; and a second transistor for amplifying 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. The light-receiving element is a lateral junction type photodiode, and an n-layer or a p-layer included in the light-receiving element is formed while overlapping with the first transistor.</p> |
