会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • High dynamic range imaging cell with electronic shutter extensions
    • 具有电子快门延伸功能的高动态范围成像单元
    • US07948535B2
    • 2011-05-24
    • US11948463
    • 2007-11-30
    • John J. Ellis-MonaghanAlain LoiseauKirk D. Peterson
    • John J. Ellis-MonaghanAlain LoiseauKirk D. Peterson
    • H04N3/14H04N5/335
    • H04N5/37452H04N5/35527H04N5/3559
    • A pixel sensor cell of improved dynamic range and a design structure including the pixel sensor cell embodied in a machine readable medium are provided. The pixel cell comprises a coupling transistor that couples a capacitor device to a photosensing region (e.g., photodiode) of the pixel cell, the photodiode being coupled to a transfer gate and one terminal of the coupling transistor. In operation, the additional capacitance is coupled to the pixel cell photodiode when the voltage on the photodiode is drawn down to the substrate potential. Thus, the added capacitance is only connected to the imager cell when the cell is nearing its charge capacity. Otherwise, the cell has a low capacitance and low leakage. In an additional embodiment, a terminal of the capacitor is coupled to a “pulsed” supply voltage signal that enables substantially full depletion of stored charge from the capacitor to the photosensing region during a read out operation of the pixel sensor cell. In various embodiments, the locations of the added capacitance and photodiode may be interchanged with respect to the coupling transistor. In addition, the added capacitor of the pixel sensor cell allows for a global shutter operation.
    • 提供了改进的动态范围的像素传感器单元和包括体现在机器可读介质中的像素传感器单元的设计结构。 像素单元包括将电容器器件耦合到像素单元的光敏区域(例如,光电二极管)的耦合晶体管,光电二极管耦合到传输栅极和耦合晶体管的一个端子。 在操作中,当光电二极管上的电压向下拉到衬底电位时,附加电容耦合到像素单元光电二极管。 因此,当电池接近其充电容量时,所添加的电容仅连接到成像器单元。 否则,电池具有低电容和低泄漏。 在另外的实施例中,电容器的端子耦合到“脉冲”电源电压信号,其在像素传感器单元的读出操作期间使存储的电荷从电容器到光敏区域基本上完全耗尽。 在各种实施例中,增加的电容和光电二极管的位置可以相对于耦合晶体管互换。 此外,像素传感器单元的附加电容允许全局快门操作。