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    • 6. 发明授权
    • Unit pixel of CMOS image sensor
    • CMOS图像传感器的单位像素
    • US07348533B2
    • 2008-03-25
    • US11458018
    • 2006-07-17
    • Joo Yul KoWon Tae ChoiDeuk Hee ParkShin Jae Kang
    • Joo Yul KoWon Tae ChoiDeuk Hee ParkShin Jae Kang
    • H01L27/00
    • H04N5/3745H04N5/361
    • In a unit pixel of a CMOS image sensor which compensates for a dark current generated in a photo diode to enhance its driving range, the photo diode generates a charge in accordance with a received light amount. A drive transistor has a gate for receiving the charge in the photo diode to output as an electrical signal, and a drain to which a power voltage is applied. A saturation detector receives a gate voltage of the drive transistor and judges the drive transistor saturated if an output voltage is smaller than a preset reference voltage. A switch connects or disconnects between the power voltage and the gate of the drive transistor in response to the judgment of the saturation detector.
    • 在补偿光电二极管中产生的暗电流以增强其驱动范围的CMOS图像传感器的单位像素中,光电二极管根据接收的光量产生电荷。 驱动晶体管具有用于接收光电二极管中的电荷作为电信号输出的栅极和施加电源电压的漏极。 饱和检测器接收驱动晶体管的栅极电压,并且如果输出电压小于预设参考电压,则判断驱动晶体管饱和。 响应于饱和检测器的判断,开关连接或断开驱动晶体管的电源电压和栅极之间的连接。
    • 7. 发明申请
    • ACTIVE PIXEL ARRAY OF CMOS IMAGE SENSOR
    • CMOS图像传感器的主动像素阵列
    • US20070030370A1
    • 2007-02-08
    • US11423666
    • 2006-06-12
    • Shin Jae KangWon Tae ChoiJoo Yul KoDeuk Hee Park
    • Shin Jae KangWon Tae ChoiJoo Yul KoDeuk Hee Park
    • H04N9/04H04N5/335
    • H04N5/335H04N9/045
    • The present invention relates to an active pixel array of a CMOS image sensor. The active pixel array includes a pixel sensor array in which a pixel sensor which detects first and second light signals, of which the wavelengths are different from each other, among all wavelengths of light signals so as to generate current and voltage signals and a pixel sensor which detects a third light signal with a predetermined wavelength so as to generate a current or voltage signal are alternately arranged; and a color filter array that is formed on the pixel sensor array and in which a filter which transmits all wavelengths of light signals and a filter which transmits the third signal with a predetermined wavelength are alternately arranged.
    • 本发明涉及CMOS图像传感器的有源像素阵列。 有源像素阵列包括像素传感器阵列,其中检测第一和第二光信号(其波长彼此不同)的像素传感器,在所有波长的光信号中产生电流和电压信号,以及像素传感器 检测出具有预定波长的第三光信号以产生电流或电压信号交替布置; 并且形成在像素传感器阵列上并且其中传输所有波长的光信号的滤波器和传输具有预定波长的第三信号的滤波器的滤色器阵列交替排列。
    • 8. 发明授权
    • LED driving apparatus and method
    • LED驱动装置及方法
    • US08890431B2
    • 2014-11-18
    • US13220041
    • 2011-08-29
    • Change Seok LeeYeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin Lee
    • Change Seok LeeYeun Joong LeeDeuk Hee ParkSang Hyun ChaJae Shin Lee
    • H05B37/02H05B33/08
    • H05B33/0815
    • There are provided an LED driving apparatus and an LED driving method thereof. The LED driving apparatus includes: a light emitting unit including one or more LEDs, a rectifying unit rectifying an input signal to generate a first signal; a signal conversion unit inverting a waveform of a first signal to generate a second signal; and an operation unit arithmetically operating the first and second signals. A plurality of AC signals each having a different waveform are arithmetically operated to generate a signal having a small amount of a ripple component, and an LED is driven by the signal, thus preventing a lifespan of the LED from being shortened by omitting a smoothing electrolytic capacitor, one of main causes shortening the lifespan of an LED driving circuit.
    • 提供了LED驱动装置及其LED驱动方法。 LED驱动装置包括:发光单元,包括一个或多个LED;整流单元对输入信号进行整流以产生第一信号; 信号转换单元,反转第一信号的波形以产生第二信号; 以及操作单元,算术地操作第一和第二信号。 每个具有不同波形的多个AC信号被算术运算以产生具有少量纹波分量的信号,并且由信号驱动LED,从而通过省略平滑电解而防止LED的寿命缩短 电容器,主要原因之一是缩短了LED驱动电路的使用寿命。