公开(公告)号：US07489262B2

公开(公告)日：2009-02-10

申请号：US11728903

申请日：2007-03-27

申请人： Cheol-Min Kim ,  Il-Gon Kim ,  Gi-Chang Lee ,  Yang-Hwa Choi ,  Oh-Kyong Kwon

发明人： Cheol-Min Kim ,  Il-Gon Kim ,  Gi-Chang Lee ,  Yang-Hwa Choi ,  Oh-Kyong Kwon

IPC分类号： H03M1/66

CPC分类号： G09G3/20 ,  G09G3/3291 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021 ,  H03M1/76

摘要： A digital-to-analog converter (DAC) includes a decoder unit for receiving an external digital data signal operating over a first predefined voltage range (i.e., 0-5V); a resistor array for generating a plurality of gray voltages defined across a second voltage range that is substantially wider than the first predefined voltage range, and a voltage selecting unit for selecting one of the gray voltages based on an output of the decoder unit, wherein the decoder unit includes a plurality of decoder stages and first and second boost circuits for generating output signals operating over a third voltage range (i.e., 0-7V) that is substantially wider than the first predefined voltage range while not requiring an additional power supply for producing voltages of the third voltage range (i.e., 0-7V).

摘要翻译： 数模转换器（DAC）包括用于接收在第一预定电压范围（即0-5V）上工作的外部数字数据信号的解码器单元; 用于产生在比第一预定电压范围宽的第二电压范围内限定的多个灰度电压的电阻器阵列;以及用于基于解码器单元的输出来选择灰度电压之一的电压选择单元，其中， 解码器单元包括多个解码器级和第一和第二升压电路，用于产生在比第一预定电压范围宽的第三电压范围（即，0-7V）上工作的输出信号，而不需要额外的电源来产生 第三电压范围的电压（即0-7V）。

公开(公告)号：US20090027423A1

公开(公告)日：2009-01-29

申请号：US12107167

申请日：2008-04-22

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G5/10 ,  G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/2022 ,  G09G2300/0852 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

摘要： An organic light emitting display and a method for driving the same, which may compensate for the degradation of an organic light emitting diode. The organic light emitting display includes: a plurality of pixels, each including an organic light emitting diode and a pixel circuit for controlling a supply of an electric current to the organic light emitting diode; and a sensing unit for converting a voltage applied to the organic light emitting diode to a digital value during a sensing period, and for sinking a second current from the pixel corresponding to the digital value to compensate for a degradation of the organic light emitting diode during a sampling period.

摘要翻译： 一种有机发光显示器及其驱动方法，其可补偿有机发光二极管的劣化。 有机发光显示器包括：多个像素，每个像素包括有机发光二极管和用于控制向有机发光二极管供应电流的像素电路; 以及感测单元，用于在感测周期期间将施加到有机发光二极管的电压转换为数字值，并且用于从对应于数字值的像素吸收第二电流，以补偿有机发光二极管的劣化 抽样期。

公开(公告)号：US20080252569A1

公开(公告)日：2008-10-16

申请号：US12080956

申请日：2008-04-08

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

摘要： An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses deterioration of the organic light emitting diode and threshold voltage and/or mobility of a drive transistor and modifies the data supplied to the pixel according to the sensed parameters.

摘要翻译： 公开了能够显示具有均匀亮度的图像的有机发光显示器，而不管有机发光二极管的劣化和驱动晶体管的阈值电压和/或迁移率如何。 有机发光显示器感测有机发光二极管的劣化和驱动晶体管的阈值电压和/或迁移率，并且根据感测的参数修改提供给像素的数据。

公开(公告)号：US20080252568A1

公开(公告)日：2008-10-16

申请号：US12080955

申请日：2008-04-08

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

摘要： An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses deterioration of the organic light emitting diode and threshold voltage and/or mobility of a drive transistor and modifies the data supplied to the pixel according to the sensed parameters.

公开(公告)号：US07423638B2

公开(公告)日：2008-09-09

申请号：US11293156

申请日：2005-12-05

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G5/00 ,  G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0417 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043 ,  H01L27/12 ,  H01L27/3262

摘要： Disclosed is an OELD and a pixel circuit which comprise: an organic EL element for emitting light corresponding to a supplied current; a first switch for switching data voltage supplied to a data line in response to a select signal supplied to a scan line; a first TFT for supplying the current to the organic EL element in response to the data voltage supplied to a gate of the first TFT via the first switch; a second TFT having a gate coupled to the gate of the first TFT and compensating for a deviation of a threshold voltage of the first TFT; and a capacitor for maintaining the data voltage supplied to the gate of the first TFT during a predetermined time.

摘要翻译： 公开了一种OELD和像素电路，其包括：用于发射对应于所提供的电流的光的有机EL元件; 用于响应于提供给扫描线的选择信号切换提供给数据线的数据电压的第一开关; 第一TFT，用于响应于通过第一开关提供给第一TFT的栅极的数据电压向有机EL元件提供电流; 第二TFT，其栅极耦合到第一TFT的栅极，并补偿第一TFT的阈值电压的偏差; 以及用于在预定时间内保持提供给第一TFT的栅极的数据电压的电容器。

公开(公告)号：US20080157682A1

公开(公告)日：2008-07-03

申请号：US11998526

申请日：2007-11-30

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： H05B41/36 ,  H01J40/14

CPC分类号： G09G3/3406 ,  G01J1/32 ,  G01J1/4204 ,  G01J1/46 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0408 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0219 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2360/144

摘要： An ambient light sensor circuit and a flat panel display device having same that can automatically control screen brightness by sensing ambient brightness and controlling an output current. The ambient light sensor circuit includes a transistor electrically coupled to a first power source; a first capacitive element electrically coupled between a control electrode of the transistor and a first reference power source; a second capacitive element electrically coupled between the first capacitive element and a second reference power source; a first light receiving element electrically coupled between the first and third reference power sources and controlling a coupling voltage of the first capacitive element and charge/discharge voltages of the second capacitive element by conducting current in response to ambient light; a first switch electrically coupled to the transistor and enabling the transistor to output current from the first power source according to the coupling voltage of the first capacitive element; and a second switch electrically coupled between the first light receiving element and the first capacitive element and interrupting a leakage current of the first light receiving element, thereby preventing the coupling voltage of the first capacitive element from being changed.

摘要翻译： 环境光传感器电路和平板显示装置具有能够通过感测环境亮度并控制输出电流来自动控制屏幕亮度的装置。 环境光传感器电路包括电耦合到第一电源的晶体管; 电耦合在晶体管的控制电极和第一参考电源之间的第一电容元件; 电耦合在所述第一电容元件和第二参考电源之间的第二电容元件; 电耦合在第一和第三参考电源之间的第一光接收元件，并且响应于环境光通过传导电流来控制第一电容元件的耦合电压和第二电容元件的充电/放电电压; 电耦合到所述晶体管并使所述晶体管能够根据所述第一电容元件的耦合电压从所述第一电源输出电流的第一开关; 以及第二开关，电耦合在第一光接收元件和第一电容元件之间，并且中断第一光接收元件的漏电流，从而防止第一电容元件的耦合电压发生变化。

公开(公告)号：US07109952B2

公开(公告)日：2006-09-19

申请号：US10457730

申请日：2003-06-10

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G3/30

CPC分类号： G09G3/325 ,  G09G2300/0809 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/06 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/043

摘要： A driving transistor for outputting a current for driving an organic electroluminescent (EL) element is formed on a pixel circuit of an organic EL display. A first capacitor is coupled between a power supply voltage and a gate of the driving transistor, and a second capacitor is coupled between the gate and a scan line. First a voltage matched with a data current is stored in the first capacitor in response to a select signal from the scan line. The voltage of the first capacitor is changed by variation of the select signal's voltage level. A driving current is output from the transistor because of the changed voltage of the first capacitor, and the organic EL element emits light as a result of the driving current.

公开(公告)号：US20060077166A1

公开(公告)日：2006-04-13

申请号：US11226816

申请日：2005-09-13

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G3/36

CPC分类号： G09G5/006 ,  G09G3/3674 ,  G09G2300/0408 ,  G09G2310/0267 ,  G09G2320/0252

摘要： A level shifter includes: a first transistor including a first electrode coupled to a first power source, a second electrode coupled to a first output terminal, and a control electrode coupled to a second output terminal; a second transistor including a first electrode coupled to the first power source, a second electrode coupled to the second output terminal, and a control electrode coupled to the first output terminal; a third transistor including a first electrode, and a second electrode coupled to the second output terminal; a fourth transistor including a first electrode, and a second electrode coupled to the first output terminal; a first capacitor including a first terminal and a second terminal; and a second capacitor including a first terminal and a second terminal.

摘要翻译： 电平移位器包括：第一晶体管，包括耦合到第一电源的第一电极，耦合到第一输出端的第二电极和耦合到第二输出端的控制电极; 第二晶体管，包括耦合到第一电源的第一电极，耦合到第二输出端的第二电极和耦合到第一输出端的控制电极; 第三晶体管，包括第一电极和耦合到第二输出端子的第二电极; 第四晶体管，包括第一电极和耦合到第一输出端子的第二电极; 第一电容器，包括第一端子和第二端子; 以及包括第一端子和第二端子的第二电容器。

公开(公告)号：US20060077143A1

公开(公告)日：2006-04-13

申请号：US11229460

申请日：2005-09-16

申请人： Oh-Kyong Kwon

发明人： Oh-Kyong Kwon

IPC分类号： G09G3/30

CPC分类号： G09G3/3283 ,  G09G3/3208 ,  G09G2310/027 ,  G09G2320/0276

摘要： A display device including a display unit including a plurality of data lines for transmitting data currents, a plurality of scan lines for transmitting scan signals, and a plurality of pixel areas defined by the data lines and the scan lines; a data driver for converting a plurality of grayscale data that include first data and second data into at least one of the data currents, and applying the at least one of the data currents to at least one of the data lines; and a scan driver for sequentially applying the scan signals to the plurality of scan lines, and wherein the data driver divides the plurality of grayscale data into at least two grayscale ranges including a first grayscale range, outputs a first current of the first grayscale range including at least one of the plurality of grayscale data by using the first data, and outputs a second current that corresponds to the second data in the first grayscale range.

摘要翻译： 一种显示装置，包括：显示单元，包括用于传输数据电流的多条数据线;多条用于发送扫描信号的扫描线;以及由数据线和扫描线定义的多个像素区域; 用于将包括第一数据和第二数据的多个灰度数据转换成数据电流中的至少一个的数据驱动器，以及将至少一个数据电流施加到数据线中的至少一个; 以及扫描驱动器，用于将所述扫描信号顺序地应用于所述多条扫描线，并且其中所述数据驱动器将所述多个灰度级数据划分成包括第一灰阶范围的至少两个灰阶范围，输出所述第一灰阶范围的第一电流，所述第一灰度范围包括 通过使用第一数据，多个灰度数据中的至少一个，并输出与第一灰度范围内的第二数据相对应的第二电流。

公开(公告)号：US20050017934A1

公开(公告)日：2005-01-27

申请号：US10886014

申请日：2004-07-06

申请人： Ho-Kyoon Chung ,  Yang-Wan Kim ,  Choon-Yul Oh ,  Oh-Kyong Kwon ,  Sang-Moo Choi

发明人： Ho-Kyoon Chung ,  Yang-Wan Kim ,  Choon-Yul Oh ,  Oh-Kyong Kwon ,  Sang-Moo Choi

IPC分类号： H01L51/50 ,  G09F9/30 ,  G09G3/20 ,  G09G3/30 ,  H05B33/08 ,  H05B33/14 ,  G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043 ,  G09G2320/045

摘要： A pixel circuit in an organic light emitting device capable of realizing high gradation representation by self-compensating a threshold voltage, and a method for driving the same. The pixel circuit includes an electroluminescent element for emitting light in response to an applied driving current. A first transistor delivers a data signal voltage in response to a current scan line signal. A second transistor generates a driving current to drive the electroluminescent element in response to the data signal voltage. A third transistor connects the second transistor in the form of a diode in response to a current scan signal to self-compensate the threshold voltage of the second transistor. A capacitor stores the data signal voltage delivered to the second transistor. A fourth transistor delivers a power supply voltage to the second transistor in response to a current light-emitting signal. A fifth transistor provides the driving current, provided from the second transistor, for the electroluminescent element in response to the current light-emitting signal.

摘要翻译： 能够通过自补偿阈值电压来实现高灰度表示的有机发光装置中的像素电路及其驱动方法。 像素电路包括用于响应于施加的驱动电流发光的电致发光元件。 第一晶体管响应于当前的扫描线信号传送数据信号电压。 第二晶体管响应于数据信号电压产生驱动电流以驱动电致发光元件。 第三晶体管响应于当前扫描信号而以二极管的形式连接第二晶体管，以自补偿第二晶体管的阈值电压。 电容器存储传送到第二晶体管的数据信号电压。 第四晶体管响应于当前的发光信号而向第二晶体管提供电源电压。 响应于当前的发光信号，第五晶体管提供从第二晶体管提供的用于电致发光元件的驱动电流。