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31. 发明申请

US20120188430A1 IMAGER PIXEL ARCHITECTURE WITH ENHANCED COLUMN DISCHARGE AND METHOD OF OPERATION 有权
标题翻译：具有增强柱排放的图像像素架构和操作方法
公开(公告)号：US20120188430A1
公开(公告)日：2012-07-26
申请号：US13073158
申请日：2011-03-28
申请人： CHUNG CHUN WAN , Xiangli Li
发明人： CHUNG CHUN WAN , Xiangli Li
IPC分类号： H04N5/335
CPC分类号： H04N5/376 , H04N5/378
摘要： A pixel circuit includes a photosensor and a floating diffusion node. A circuit is coupled to the floating diffusion node, for selectively providing a pixel output signal to a column line. A reset circuit, which resets the floating diffusion node, is configured to be activated by the column line. A pullup circuit is included for controlling the reset circuit through a signal on the column line. A discharge circuit, which is separate from the reset circuit, is used for discharging the pixel output signal on the column line. The discharge circuit includes a transistor having a first source/drain terminal coupled to the column line and a second source/drain terminal coupled to a fixed voltage level. The gate of the transistor activates the discharging of the column line.
摘要翻译：像素电路包括光电传感器和浮动扩散节点。电路耦合到浮动扩散节点，用于选择性地向列线提供像素输出信号。将浮动扩散节点复位的复位电路配置为由列线激活。包括上拉电路，用于通过列线上的信号来控制复位电路。与复位电路分离的放电电路用于对列线上的像素输出信号进行放电。放电电路包括具有耦合到列线的第一源极/漏极端子和耦合到固定电压电平的第二源极/漏极端子的晶体管。晶体管的栅极激活列线的放电。

32. 发明申请

US20080169414A1 Method and apparatus for measuring source follower gain in an image sensor array 有权
标题翻译：用于测量图像传感器阵列中源极跟随器增益的方法和装置
公开(公告)号：US20080169414A1
公开(公告)日：2008-07-17
申请号：US11652680
申请日：2007-01-12
申请人： Xiangli Li
发明人： Xiangli Li
IPC分类号： H01L27/00
CPC分类号： H04N17/002 , H04N5/341 , H04N5/3698 , H04N5/374 , H04N5/376
摘要： Disclosed embodiments provide a method and apparatus for measuring the gain of output transistors of pixels in an imager device. Source/drain terminals of the output transistor and a reset transistor are driven with various input voltages to generate pixel output voltages. The slope of a line representing the relationship between the output voltages and the input voltages is determined. A component of the slope corresponding to gain not caused by the output transistor is removed from the slope to determine the gain of the output transistor.
摘要翻译：公开的实施例提供了一种用于测量成像器装置中的像素的输出晶体管的增益的方法和装置。输出晶体管的源极/漏极端子和复位晶体管由各种输入电压驱动以产生像素输出电压。确定表示输出电压和输入电压之间的关系的线的斜率。对应于不是由输出晶体管引起的增益的斜率的分量从斜率去除以确定输出晶体管的增益。

33. 发明申请

US20070188642A1 METHOD AND APPARATUS FOR DARK CURRENT AND HOT PIXEL REDUCTION IN ACTIVE PIXEL IMAGE SENSORS 审中-公开
标题翻译：用于激活像素图像传感器中的暗电流和高像素减少的方法和装置
公开(公告)号：US20070188642A1
公开(公告)日：2007-08-16
申请号：US11737186
申请日：2007-04-19
申请人： Gennadiy Agranov , Xiangli Li , Peter Altice , Rick Mauritzson
发明人： Gennadiy Agranov , Xiangli Li , Peter Altice , Rick Mauritzson
IPC分类号： H04N5/225
CPC分类号： H04N5/3591 , H01L27/14609 , H01L27/14654 , H04N5/361 , H04N5/3745
摘要： A method of operating an imager pixel that includes the act of applying a relatively small voltage on the gate of a transfer transistor during a charge acquisition period. If a small positive voltage is applied, a depletion region is created under the transfer transistor gate, which creates a path for dark current electrons to be transferred to a pixel floating diffusion region. The dark electrons are subsequently removed by a pixel reset operation. If a small negative voltage is applied to the transfer gate, electrons that would normally create dark current problems will instead recombine with holes thereby substantially reducing dark current.
摘要翻译：一种操作成像器像素的方法，其包括在电荷采集周期期间在传输晶体管的栅极上施加相对小的电压的动作。如果施加小的正电压，则在传输晶体管栅极之下产生耗尽区，其产生用于暗电流电子被传送到像素浮动扩散区的路径。随后通过像素复位操作去除暗电子。如果向传输栅极施加小的负电压，则通常会产生暗电流问题的电子将与空穴复合，从而显着减少暗电流。

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