High sensitivity and no-cross-talk pixel technology for embedded CMOS image sensor

被引:1
|
作者
Furumiya, M [1 ]
Ohkubo, H [1 ]
Muramatsu, Y [1 ]
Kurosawa, S [1 ]
Nakashiba, Y [1 ]
机构
[1] NEC Corp Ltd, ULSI Device Dev Div, Sagamihara, Kanagawa 2291198, Japan
关键词
D O I
10.1109/IEDM.2000.904415
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A high-photosensitivity and no-cross-talk pixel technology has been developed for an embedded active-pixel CMOS image sensor using a 0.35-mum CMOS logic process. To increase photosensitivity, we developed a deep low-concentration p-well (deep p-well) photodiode. To suppress pixel cross-talk caused by obliquely incident light, a double-metal photoshield was used. The cross-talk caused by electron diffusion in the substrate was suppressed by using the deep p-well photodiode. A 1/3-inch 330k-pixel active-pixel CMOS image sensor was fabricated using this technology. A sensitivity improvement of 110% for 550-nn incident light was obtained.
引用
收藏
页码:701 / 704
页数:4
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