发明名称 |
Mechanisms for forming image-sensor device with deep-trench isolation structure |
摘要 |
A method for fabricating an image-sensor device is provided. The method includes forming a radiation-sensing region and a doped isolation region in a semiconductor substrate. The doped isolation region is adjacent to the radiation-sensing region. The method also includes thinning the semiconductor substrate such that the radiation-sensing region and the doped isolation region are exposed. The method further includes partially removing the doped isolation region to form a recess. In addition, the method includes forming a negatively charged film over an interior surface of the recess and a surface of the radiation-sensing exposed after the thinning of the semiconductor substrate. |
申请公布号 |
US9318526(B2) |
申请公布日期 |
2016.04.19 |
申请号 |
US201514822575 |
申请日期 |
2015.08.10 |
申请人 |
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD. |
发明人 |
Lin Jeng-Shyan;Yaung Dun-Nian;Liu Jen-Cheng;Hung Feng-Chi |
分类号 |
H01L21/00;H01L27/146 |
主分类号 |
H01L21/00 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A method of fabricating an image-sensor device, comprising:
providing a substrate having a front surface and a back surface; forming a radiation-sensing region and a doped isolation region adjacent to the front surface, the doped isolation region being adjacent to the radiation-sensing region; forming a trench in the doped isolation region from the back surface; and forming a negatively charged film over the back surface and covering an interior surface of the trench. |
地址 |
Hsin-Chu TW |