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    • 76. 发明申请
    • IMAGING SYSTEMS AND METHODS FOR PERFORMING UNBOOSTED IMAGE SENSOR PIXEL CONVERSION GAIN ADJUSTMENTS
    • 成像系统和执行未成像图像传感器像素转换增益调整的方法
    • US20160316163A1
    • 2016-10-27
    • US14692512
    • 2015-04-21
    • SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    • Jeffery BECK
    • H04N5/378H04N5/372H04N5/351H04N5/369
    • H04N5/3559H04N5/243
    • An image sensor may include an array of pixels arranged in rows and columns. Each pixel may include a floating diffusion node, a capacitor, a dual conversion gain (DCG) transistor having a gate terminal coupled to the floating diffusion, a source terminal, and a drain terminal coupled to the floating diffusion through the capacitor. Column readout circuitry may provide per-column control signals to the source terminal of the DCG transistor in the pixels of a selected row to place the pixels into a low conversion gain mode by turning the DCG transistor on and into a high conversion gain mode by turning the DCG transistor off. In this way, the readout circuitry may provide per-column conversion gains for each row without boosting DCG control signals to magnitudes greater than the pixel supply voltage, thereby reducing voltage stress on the pixel array and improving lifetime of the image sensor.
    • 图像传感器可以包括以行和列排列的像素阵列。 每个像素可以包括浮动扩散节点,电容器,具有耦合到浮动扩散的栅极端子的双转换增益(DCG)晶体管,源极端子和耦合到通过电容器的浮动扩散器的漏极端子。 列读出电路可以向所选行的像素中的DCG晶体管的源极端子提供每列控制信号,以通过将DCG晶体管导通并转换为高转换增益模式,将像素转换为低转换增益模式,通过转动 DCG晶体管关闭。 以这种方式,读出电路可以为每行提供每列转换增益,而不会将DCG控制信号提升到大于像素电源电压的幅度,从而降低像素阵列上的电压应力并改善图像传感器的寿命。
    • 77. 发明授权
    • Electronic apparatus, control method, and image sensor
    • 电子设备,控制方法和图像传感器
    • US09451193B2
    • 2016-09-20
    • US14165715
    • 2014-01-28
    • Sony Corporation
    • Yuuki YamagataShizunori Matsumoto
    • H04N5/378H04N5/351H04N5/359
    • H04N5/378H04N5/351H04N5/3598
    • An electronic apparatus includes: a reference-signal output section that outputs a reference signal; a comparator that compares an electrical signal output from a pixel with the reference signal; a counter that obtains a count value as an AD conversion result of the electrical signal, the count value being obtained by counting time taken for the reference signal to change until the electrical signal and the reference signal match each other; and an auto-zero control section that performs control so that auto zero processing for setting the comparator is completed in a reset period, in which the pixel is reset, so that a comparison result indicating that two input signals supplied to the comparator match each other.
    • 电子设备包括:参考信号输出部分,其输出参考信号; 比较器,将来自像素的电信号与参考信号进行比较; 获得作为电信号的AD转换结果的计数值的计数器,所述计数值是通过对所述参考信号进行改变直到所述电信号和所述参考信号彼此匹配来计算时间而获得的; 以及自动归零控制部,其进行控制,使得在复位周期中完成用于设置比较器的自动零处理,其中像素被复位,使得指示提供给比较器的两个输入信号的比较结果彼此匹配 。