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    • 2. 发明授权
    • Pixel sensor cell including light shield
    • 像素传感器单元包括遮光罩
    • US09543356B2
    • 2017-01-10
    • US12538194
    • 2009-08-10
    • Jeffrey P. GambinoMark D. JaffeJohn Ellis-MonaghanRichard Rassel
    • Jeffrey P. GambinoMark D. JaffeJohn Ellis-MonaghanRichard Rassel
    • H01L27/148H01L27/146
    • H01L27/14689H01L27/14609H01L27/14623H01L27/1464
    • 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.
    • CMOS图像传感器像素传感器单元,用于制造像素传感器单元的方法和用于制造像素传感器单元的设计结构被设计成允许在全局快门模式中进行背面照明,通过提供来自至少一个晶体管的背侧照明的光屏蔽 像素传感器单元。 在第一特定广义实施例中,遮光层位于包括光活性区的第一半导体层和包括至少第二晶体管的第二半导体层之间并形成,或者浮置扩散部被屏蔽 遮光层。 在第二广义实施例中,使用薄膜晶体管和金属 - 绝缘体 - 金属电容器来代替浮动扩散,并且被定位在载体衬底上的介电隔离金属化堆叠中。