Invention Grant
- Patent Title: Pixel sensor cell including light shield
- Patent Title (中): 像素传感器单元包括遮光罩
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Application No.: US12538194Application Date: 2009-08-10
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Publication No.: US09543356B2Publication Date: 2017-01-10
- Inventor: Jeffrey P. Gambino , Mark D. Jaffe , John Ellis-Monaghan , Richard Rassel
- Applicant: Jeffrey P. Gambino , Mark D. Jaffe , John Ellis-Monaghan , Richard Rassel
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Main IPC: H01L27/148
- IPC: H01L27/148 ; H01L27/146

Abstract:
CMOS image sensor pixel sensor cells, methods for fabricating the pixel sensor cells and design structures for fabricating the pixel sensor cells are designed to allow for back side illumination in global shutter mode by providing light shielding from back side illumination of at least one transistor within the pixel sensor cells. In a first particular generalized embodiment, a light shielding layer is located and formed interposed between a first semiconductor layer that includes a photoactive region and a second semiconductor layer that includes the at least a second transistor, or a floating diffusion, that is shielded by the light blocking layer. In a second generalized embodiment, a thin film transistor and a metal-insulator-metal capacitor are used in place of a floating diffusion, and located shielded in a dielectric isolated metallization stack over a carrier substrate.
Public/Granted literature
- US20100230729A1 PIXEL SENSOR CELL INCLUDING LIGHT SHIELD Public/Granted day:2010-09-16
Information query
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