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    • 3. 发明申请
    • Image sensors and image sensing methods selecting photocurrent paths according to incident light
    • 图像传感器和图像感测方法根据入射光选择光电流路径
    • US20080012973A1
    • 2008-01-17
    • US11806594
    • 2007-06-01
    • Jong-Eun ParkYong-Jei Lee
    • Jong-Eun ParkYong-Jei Lee
    • H04N5/335
    • H04N5/335H04N5/378
    • Example embodiments may be directed to CMOS image sensors and image sensing methods selecting a path for photocurrent according to the quantity or amount of incident light. The CMOS image sensor may include a pixel array comprised of a plurality of pixel pairs. A pixel pair may include a first pixel, including a first photo diode, a first pair of transistors, and a first floating diffusion node having a first capacitance. The pixel pair may further include a second pixel, including a second photo diode, a second pair of transistors, and a second floating diffusion node having a second capacitance. A first one of the first pair of transistors may be connected between the first photo diode and the first floating diffusion node. A second one of the first pair of transistors may be connected between the first photo diode and the second floating diffusion node. A first one of the second pair of transistors may be connected between the second photo diode and the second floating diffusion node. A second one of the second pair of transistors may be connected between the second photo diode and a first floating diffusion node of a next pixel pair. The first capacitance of the first floating diffusion node may be greater than the second capacitance of the second floating diffusion node.
    • 示例性实施例可以针对CMOS图像传感器和图像感测方法,其根据入射光的量或量选择光电流的路径。 CMOS图像传感器可以包括由多个像素对组成的像素阵列。 像素对可以包括第一像素,包括第一光电二极管,第一对晶体管和具有第一电容的第一浮动扩散节点。 像素对还可以包括第二像素,包括第二光电二极管,第二对晶体管和具有第二电容的第二浮动扩散节点。 第一对晶体管中的第一对可以连接在第一光电二极管和第一浮动扩散节点之间。 第一对晶体管中的第二对可以连接在第一光电二极管和第二浮动扩散节点之间。 第二对晶体管中的第一对可以连接在第二光电二极管和第二浮动扩散节点之间。 第二对晶体管中的第二对可以连接在第二光电二极管和下一个像素对的第一浮动扩散节点之间。 第一浮动扩散节点的第一电容可以大于第二浮动扩散节点的第二电容。
    • 5. 发明申请
    • PIXEL CIRCUIT, DEPTH SENSOR AND OPERATING METHOD
    • 像素电路,深度传感器和操作方法
    • US20130126716A1
    • 2013-05-23
    • US13611607
    • 2012-09-12
    • YONG-JEI LEEYOON-DONG PARKYOUNG-GU JIN
    • YONG-JEI LEEYOON-DONG PARKYOUNG-GU JIN
    • G01J1/44
    • G01J1/44G01J1/0228G01J1/18G01S7/4914G01S17/89H04N5/3696
    • A pixel circuit for a depth sensor operating in a detection period and an output period in either a first operating mode (high incident light intensity) or a second operating mode (low incident light intensity). The pixel circuit includes a light receiving unit generating charge in response to the incident light, a signal generation unit accumulating charge in a FDN in response to a transmission signal, reset signal and selection signal during the detection period, and generating an analog signal having a level corresponding to a voltage apparent at the FDN during the output period, and a refresh transistor coupled between a supply voltage and the light receiving unit and discharging charge to the supply voltage in response to a refresh signal.
    • 用于在第一操作模式(高入射光强度)或第二操作模式(低入射光强度)中的检测周期和输出周期中操作的深度传感器的像素电路。 像素电路包括响应于入射光而产生电荷的光接收单元,信号生成单元响应于在检测周期期间的发送信号,复位信号和选择信号在FDN中累积电荷,并且生成具有 对应于在输出周期期间在FDN处显现的电压的电平,以及耦合在电源电压和光接收单元之间的刷新晶体管,并且响应于刷新信号将电荷放电到电源电压。
    • 8. 发明申请
    • CMOS IMAGE SENSOR AND METHOD OF DRIVING THE SAME
    • CMOS图像传感器及其驱动方法
    • US20080035966A1
    • 2008-02-14
    • US11679319
    • 2007-02-27
    • Sung-In HwangYong-Jei LeeJung-Chak AhnJu-Hyun Ko
    • Sung-In HwangYong-Jei LeeJung-Chak AhnJu-Hyun Ko
    • H01L31/062H01L21/00
    • H01L27/14643H01L27/14609H04N5/3741H04N5/3745H04N5/37452
    • A complementary metal-oxide semiconductor (CMOS) image sensor and a method of driving the CMOS image sensor that can reduce the number of devices required by each of a plurality of pixels and can stably drive the pixels, in which each of the pixels includes a photodiode that converts light energy into an electrical signal, a transfer transistor that transmits photocarriers stored in the photodiode to a floating diffusing region, a drive transistor that has a gate connected to the floating diffusion region and drives a voltage signal according to a voltage of the floating diffusion region, the voltage signal being output to an external device, and a capacitive device that is connected between a control voltage source and the floating diffusion region and, when a sensing operation of a corresponding pixel is terminated, deselects the pixel by altering the voltage of the floating diffusion region according to a control voltage provided by the control voltage source.
    • 互补金属氧化物半导体(CMOS)图像传感器和驱动CMOS图像传感器的方法,其可以减少多个像素中的每一个所需的器件的数量,并且可以稳定地驱动像素,其中每个像素包括 将光能转换为电信号的光电二极管,将存储在光电二极管中的光载流子传输到浮动漫射区的传输晶体管,具有连接到浮动扩散区的栅极并根据所述浮动扩散区的电压驱动电压信号的驱动晶体管 浮动扩散区域,电压信号被输出到外部设备;以及电容器件,其连接在控制电压源和浮动扩散区域之间,并且当相应像素的感测操作终止时,通过改变像素 根据由控制电压源提供的控制电压,浮动扩散区域的电压。