LIGHT SENSING SYSTEM AND LIGHT SENSOR WITH POLARIZER

• Main Authors: BONAKDAR ALIREZA, LIAN SHINN-JHY
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

Disclosed are a light sensing system and a light sensor with a polarizer. The light sensor includes a photodiode, an interlayer dielectric layer and a plurality of metal layers. A polarizer is disposed in the plurality of metal layers. The photodiode is coupled to generate charge in response to incident light directed through a first side of the semiconductor layer. The polarizer includes a first metal grid formed with a first metal layer and a second metal grid formed with a third metal layer. The second metal grid is stacked with the first metal grid such that the first and second metal grids are disposed above and aligned with the photodiode. The photodiode is optically coupled to receive incident light through the first and second metal grids of the polarizer and through the first side of the semiconductor layer. 本申请案涉及具有偏光片的光感测系统以及光感测器。一种光传感器包含光电二极管、层间电介质层和多个金属层。偏光片安置于所述多个金属层中。所述光电二极管经耦合以响应于入射光被引导穿过所述半导体层的第一侧而产生电荷。所述偏光片包含形成有第一金属层的第一金属网格，以及形成有第三金属层的第二金属网格。所述第二金属网格与所述第一金属网格堆叠，使得所述第一和第二金属网格安置于所述光电二极管上方并与之对准