公开(公告)号：US08913046B2

公开(公告)日：2014-12-16

申请号：US13051082

申请日：2011-03-18

申请人： Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Yang-Hwa Choi ,  Se-Hyang Kim ,  Chul-Ho Kim

发明人： Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Yang-Hwa Choi ,  Se-Hyang Kim ,  Chul-Ho Kim

IPC分类号： G09G5/00 ,  G09G3/36

CPC分类号： G09G3/3648 ,  G09G3/3655 ,  G09G2300/0814 ,  G09G2320/0214 ,  G09G2330/021

摘要： An LCD and a driving method thereof include: data writing for applying a common voltage and a data voltage to a plurality of pixels; and sustaining for applying a shifted common voltage shifted by a predetermined level from the common voltage to the plurality of pixels for a sustain period during which the plurality of pixels emit light, corresponding to the data voltage. The shifted common voltage is shifted to an opposite polarity of a polarity of a gate-off voltage applied to the plurality of pixels to float the plurality of pixels. During a sustain period, a gate-source voltage of the switching transistor can be increased, and accordingly an influence due to the leakage current can be minimized, thereby preventing image deterioration. Further, since capacitance of the sustain capacitor can be reduced so that power consumption of the LCD can be reduced.

摘要翻译： LCD及其驱动方法包括：向多个像素施加公共电压和数据电压的数据写入; 以及对应于所述数据电压，将用于从所述公共电压偏移了预定电平的偏移公共电压施加到所述多个像素，持续所述多个像素发光的维持周期。 偏移的公共电压被移动到施加到多个像素的栅极截止电压的极性的相反极性，以浮动多个像素。 在维持期间，可以提高开关晶体管的栅源电压，能够使由漏电流引起的影响最小化，防止图像劣化。 此外，由于能够减小维持电容器的电容，能够降低LCD的功耗。

公开(公告)号：US20120098816A1

公开(公告)日：2012-04-26

申请号：US13051082

申请日：2011-03-18

申请人： Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Yang-Hwa Choi ,  Se-Hyang Kim ,  Chul-Ho Kim

发明人： Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Yang-Hwa Choi ,  Se-Hyang Kim ,  Chul-Ho Kim

IPC分类号： G06F3/038

CPC分类号： G09G3/3648 ,  G09G3/3655 ,  G09G2300/0814 ,  G09G2320/0214 ,  G09G2330/021

摘要： An LCD and a driving method thereof include: data writing for applying a common voltage and a data voltage to a plurality of pixels; and sustaining for applying a shifted common voltage shifted by a predetermined level from the common voltage to the plurality of pixels for a sustain period during which the plurality of pixels emit light, corresponding to the data voltage. The shifted common voltage is shifted to an opposite polarity of a polarity of a gate-off voltage applied to the plurality of pixels to float the plurality of pixels. During a sustain period, a gate-source voltage of the switching transistor can be increased, and accordingly an influence due to the leakage current can be minimized, thereby preventing image deterioration. Further, since capacitance of the sustain capacitor can be reduced so that power consumption of the LCD can be reduced.

摘要翻译： LCD及其驱动方法包括：向多个像素施加公共电压和数据电压的数据写入; 以及对应于所述数据电压，将用于从所述公共电压偏移了预定电平的偏移公共电压施加到所述多个像素，持续所述多个像素发光的维持周期。 偏移的公共电压被移动到施加到多个像素的栅极截止电压的极性的相反极性，以浮动多个像素。 在维持期间，可以提高开关晶体管的栅源电压，能够使由漏电流引起的影响最小化，防止图像劣化。 此外，由于能够减小维持电容器的电容，能够降低LCD的功耗。

公开(公告)号：US20110227894A1

公开(公告)日：2011-09-22

申请号：US12946176

申请日：2010-11-15

申请人： Yang-Hwa Choi ,  Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Chul-Ho Kim ,  Se-Hyang Kim

发明人： Yang-Hwa Choi ,  Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Chul-Ho Kim ,  Se-Hyang Kim

IPC分类号： G06F3/038

CPC分类号： G09G3/3655 ,  G09G2300/0814 ,  G09G2310/0281 ,  G09G2320/0252 ,  G09G2330/021

摘要： A display device includes: a plurality of pixels; a data driver connected to the plurality of pixels by a plurality of data lines and applying data signals to the plurality of pixels; a scan driver connected to the plurality of pixels by a plurality of scan lines and applying scan signals to the plurality of pixels for the data signals to be applied to the plurality of pixels; a boost driver connected to the plurality of pixels by a plurality of boost lines and applying boost signals, boosting the pixel voltage charged to the plurality of pixels by the data signals, to the plurality of pixels; and a boost voltage maintaining unit applying a restoring voltage restoring the voltage in the plurality of boost lines by the scan signal to the plurality of boost lines. The voltage generated in the boost line by the coupling may be quickly restored and the crosstalk may be minimized, thereby improving the image quality.

摘要翻译： 显示装置包括：多个像素; 数据驱动器，其通过多条数据线连接到所述多个像素，并将数据信号施加到所述多个像素; 扫描驱动器，其通过多条扫描线连接到所述多个像素，并且将扫描信号施加到所述多个像素，以供应用于所述多个像素的数据信号; 升压驱动器，其通过多个升压线连接到所述多个像素，并且施加升压信号，通过所述数据信号将所述多个像素的像素电压升压到所述多个像素; 以及升压保持单元，通过所述扫描信号将多个升压线中的电压恢复到所述多个升压线路而施加恢复电压。 通过耦合在升压线中产生的电压可以被快速恢复，并且串扰可以被最小化，从而提高图像质量。

公开(公告)号：US08884862B2

公开(公告)日：2014-11-11

申请号：US12946176

申请日：2010-11-15

申请人： Yang-Hwa Choi ,  Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Chul-Ho Kim ,  Se-Hyang Kim

发明人： Yang-Hwa Choi ,  Seung-Kyu Lee ,  Kyung-Hoon Kim ,  Chul-Ho Kim ,  Se-Hyang Kim

IPC分类号： G09G3/36

CPC分类号： G09G3/3655 ,  G09G2300/0814 ,  G09G2310/0281 ,  G09G2320/0252 ,  G09G2330/021

摘要： A display device includes: a plurality of pixels; a data driver connected to the plurality of pixels by a plurality of data lines and applying data signals to the plurality of pixels; a scan driver connected to the plurality of pixels by a plurality of scan lines and applying scan signals to the plurality of pixels for the data signals to be applied to the plurality of pixels; a boost driver connected to the plurality of pixels by a plurality of boost lines and applying boost signals, boosting the pixel voltage charged to the plurality of pixels by the data signals, to the plurality of pixels; and a boost voltage maintaining unit applying a restoring voltage restoring the voltage in the plurality of boost lines by the scan signal to the plurality of boost lines. The voltage generated in the boost line by the coupling may be quickly restored and the crosstalk may be minimized, thereby improving the image quality.

摘要翻译： 一种显示装置，包括：多个像素; 数据驱动器，其通过多条数据线连接到所述多个像素，并将数据信号施加到所述多个像素; 扫描驱动器，其通过多条扫描线连接到所述多个像素，并且将扫描信号施加到所述多个像素，以供应用于所述多个像素的数据信号; 升压驱动器，其通过多个升压线连接到所述多个像素，并且施加升压信号，通过所述数据信号将所述多个像素的像素电压升压到所述多个像素; 以及升压保持单元，通过所述扫描信号将多个升压线中的电压恢复到所述多个升压线路而施加恢复电压。 通过耦合在升压线中产生的电压可以快速恢复，并且串扰可以最小化，从而提高图像质量。

公开(公告)号：US08310469B2

公开(公告)日：2012-11-13

申请号：US11948284

申请日：2007-11-30

申请人： Kee-Chan Park ,  Shang-Min Yhee ,  Doo-Hyung Woo ,  Zhi Feng Zhan ,  Seong-Il Park ,  Seung-Kyu Lee ,  Yang-Hwa Choi

发明人： Kee-Chan Park ,  Shang-Min Yhee ,  Doo-Hyung Woo ,  Zhi Feng Zhan ,  Seong-Il Park ,  Seung-Kyu Lee ,  Yang-Hwa Choi

IPC分类号： G06F3/038

CPC分类号： G09G3/3291 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2310/0216 ,  G09G2310/0262 ,  G09G2320/043

摘要： A display device includes a light emitting element, a capacitor, a driving transistor, and first to third switching units. The capacitor is connected between a first node and a second node. The driving transistor has an input terminal connected with a first voltage, an output terminal, and a control terminal connected with the second node, and it outputs a driving current to the light emitting element. The first switching unit selects and connects one of a data voltage and a second voltage to the first node. The second switching unit switches a connection between the second voltage and the second node. The third switching unit selects and connects one of the second node and the light emitting element to the output terminal of the driving transistor.

摘要翻译： 显示装置包括发光元件，电容器，驱动晶体管和第一至第三开关单元。 电容器连接在第一节点和第二节点之间。 驱动晶体管具有与第一电压，输出端子和与第二节点连接的控制端子连接的输入端子，并且其向发光元件输出驱动电流。 第一开关单元选择并连接数据电压和第二电压中的一个到第一节点。 第二开关单元切换第二电压和第二节点之间的连接。 第三开关单元将第二节点和发光元件之一选择并连接到驱动晶体管的输出端子。

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：US20140146028A1

公开(公告)日：2014-05-29

申请号：US13901064

申请日：2013-05-23

申请人： Yang-Hwa Choi ,  Cheol-Min Kim

发明人： Yang-Hwa Choi ,  Cheol-Min Kim

IPC分类号： G09G3/34

CPC分类号： G09G3/3225 ,  G09G2300/0852 ,  G09G2310/0248 ,  G09G2320/045

摘要： A pixel, a display device including the same, and a driving method thereof. The display device includes: a data driver transmitting data signals; a scan driver generating and transmitting scan signals; a display panel including pixels, each emitting light with a driving current according to the data signals; a compensation signal unit generating and transmitting a compensation control signal for controlling simultaneous transmission of a predetermined bias voltage to each of the pixels before a data voltage according to the data signals is applied to each of the pixels; a power controller controlling voltage levels of the first power source voltage and the second power source voltage and supplying the level-controlled first and second power source voltages; and a timing controller generating the data signals by processing an external image signal and generating a plurality of driving control signals.

摘要翻译： 像素，包括该像素的显示装置及其驱动方法。 显示装置包括：数据驱动器，发送数据信号; 产生和发送扫描信号的扫描驱动器; 包括像素的显示面板，每个都根据数据信号发射具有驱动电流的光; 补偿信号单元，产生并发送补偿控制信号，用于在根据数据信号的数据电压被施加到每个像素之前，同时传输预定偏置电压到每个像素; 电源控制器，其控制所述第一电源电压和所述第二电源电压的电压电平，并提供所述电平控制的第一和第二电源电压; 以及定时控制器，通过处理外部图像信号并产生多个驱动控制信号来产生数据信号。

公开(公告)号：US20070241952A1

公开(公告)日：2007-10-18

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）。