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发明公开
CN109801934A 一种图像传感单元及其制作方法、图像传感器 审中-实审

一种图像传感单元及其制作方法、图像传感器
摘要：
本发明公开了一种图像传感单元及其制作方法、图像传感器，其中，图像传感单元设置有陷光结构，入射光经过陷光结构反射、散射、折射后被分散到各个角度，加上侧壁反射墙的反射作用，可以延长光在图像传感单元中的有效光程，从而提高了光在图像传感单元中的吸收效率，而不需增加器件厚度；另外，一种图像传感单元的制作方法，实现了图像传感单元的制作，其中，图像传感单元具有第一陷光结构和第二陷光结构，可以提高图像传感单元的光吸收效率。
摘要（英）：

The invention discloses an image sensing unit and a manufacturing method thereof, and an image sensor. The image sensing unit is provided with light trapping structures. The incident light is dispersed to various angles after being reflected, scattered and refracted by the light trapping structure, which, with the addition of the reflection function of a sidewall reflecting wall, can extend the effective optical path of the light in the image sensing unit. Therefore, the absorption efficiency of light in the image sensing unit can be improved without increasing the thickness of the device. Inaddition, a manufacturing method of the image sensing unit is disclosed, which realizes the manufacture of the image sensing unit. The image sensing unit has a first light trapping structure and a second light trapping structure, which can improve the light absorption efficiency of the image sensing unit.

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