Invention Application
- Patent Title: PARTIAL BURIED CHANNEL TRANSFER DEVICE FOR IMAGE SENSORS
- Patent Title (中): 用于图像传感器的部分通道传输设备
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Application No.: US13273026Application Date: 2011-10-13
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Publication No.: US20130092982A1Publication Date: 2013-04-18
- Inventor: Gang Chen , Sing-Chung Hu , Hsin-Chih Tai , Duli Mao , Manoj Bikumandla , Wei Zheng , Yin Qian , Zhibin Xiong , Vincent Venezia , Keh-Chiang Ku , Howard E. Rhodes
- Applicant: Gang Chen , Sing-Chung Hu , Hsin-Chih Tai , Duli Mao , Manoj Bikumandla , Wei Zheng , Yin Qian , Zhibin Xiong , Vincent Venezia , Keh-Chiang Ku , Howard E. Rhodes
- Applicant Address: US CA Santa Clara
- Assignee: OMNIVISION TECHNOLOGIES, INC.
- Current Assignee: OMNIVISION TECHNOLOGIES, INC.
- Current Assignee Address: US CA Santa Clara
- Main IPC: H01L27/148
- IPC: H01L27/148 ; H01L31/18 ; H01L31/101

Abstract:
Embodiments of an image sensor pixel that includes a photosensitive element, a floating diffusion region, and a transfer device. The photosensitive element is disposed in a substrate layer for accumulating an image charge in response to light. The floating diffusion region is dispose in the substrate layer to receive the image charge from the photosensitive element. The transfer device is disposed between the photosensitive element and the floating diffusion region to selectively transfer the image charge from the photosensitive element to the floating diffusion region. The transfer device includes a buried channel device including a buried channel gate disposed over a buried channel dopant region. The transfer device also includes a surface channel device including a surface channel gate disposed over a surface channel region. The surface channel device is in series with the buried channel device. The surface channel gate has the opposite polarity of the buried channel gate.
Public/Granted literature
- US09698185B2 Partial buried channel transfer device for image sensors Public/Granted day:2017-07-04
Information query
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