公开(公告)号：US08115721B2

公开(公告)日：2012-02-14

申请号：US11822234

申请日：2007-07-03

申请人： Teru Yoneyama

发明人： Teru Yoneyama

IPC分类号： G09G3/36

CPC分类号： G09G5/005

摘要： A display data receiving circuit of the present invention includes a PLL circuit 25 which generates internal clock signal ICLK having an integral multiple of the frequency of differential clock signals CLK and /CLK in response to differential clock signals CLK and /CLK, and a serial/parallel conversion circuit 23 which receives serial data signal transmitting display data in synchronization with the internal clock signal ICLK, and generates parallel data signal by executing serial/parallel conversion for the serial data signal. The serial/parallel conversion circuit 23 is configured to be able to execute either a single edge operation, which receives serial data signals in response to one of a rising edge and a falling edge of the internal clock signal ICLK, or a double edge operation, which receives serial data signals in response to both of a rising edge and a falling edge of the internal clock signal ICLK. Further, the PLL circuit 25 is configured to be able to change the frequency of the internal clock signal ICLK.

摘要翻译： 本发明的显示数据接收电路包括PLL电路25，该PLL电路25响应于差分时钟信号CLK和/ CLK产生具有差分时钟信号CLK和/ CLK的频率的整数倍的内部时钟信号ICLK，以及串行/ 并行转换电路23，其接收与内部时钟信号ICLK同步地发送显示数据的串行数据信号，并且通过对串行数据信号执行串行/并行转换来产生并行数据信号。 串行/并行转换电路23被配置为能够执行响应于内部时钟信号ICLK的上升沿和下降沿之一接收串行数据信号的单边沿操作或双边沿操作， 其响应于内部时钟信号ICLK的上升沿和下降沿两者而接收串行数据信号。 此外，PLL电路25被配置为能够改变内部时钟信号ICLK的频率。

公开(公告)号：US20080007508A1

公开(公告)日：2008-01-10

申请号：US11822234

申请日：2007-07-03

申请人： Teru Yoneyama

发明人： Teru Yoneyama

IPC分类号： G09G3/36

CPC分类号： G09G5/005

摘要： A display data receiving circuit of the present invention includes a PLL circuit 25 which generates internal clock signal ICLK having an integral multiple of the frequency of differential clock signals CLK and /CLK in response to differential clock signals CLK and /CLK, and a serial/parallel conversion circuit 23 which receives serial data signal transmitting display data as in synchronization with the internal clock signal ICLK, and generates parallel data signal by executing serial/parallel conversion for the serial data signal. The serial/parallel conversion circuit 23 is configured to be able to both of a single edge operation which receives serial data signals in response to one of a rising edge and a falling edge of the internal clock signal ICLK, and a double edge operation which receives serial data signals in response to both of a rising edge and a falling edge of the internal clock signal ICLK. Further, the PLL circuit 25 is configured to be able to change the frequency of the internal clock signal ICLK.

摘要翻译： 本发明的显示数据接收电路包括PLL电路25，该PLL电路25响应于差分时钟信号CLK和/ CLK产生具有差分时钟信号CLK和/ CLK的频率的整数倍的内部时钟信号ICLK，以及串行/ 并行转换电路23，其接收与内部时钟信号ICLK同步地发送显示数据的串行数据信号，并通过对串行数据信号执行串行/并行转换来产生并行数据信号。 串行/并行转换电路23被配置为能够响应于内部时钟信号ICLK的上升沿和下降沿中的一个而接收串行数据信号的单个边缘操作两者，以及接收 串行数据信号响应于内部时钟信号ICLK的上升沿和下降沿两者。 此外，PLL电路25被配置为能够改变内部时钟信号ICLK的频率。

公开(公告)号：US20050168416A1

公开(公告)日：2005-08-04

申请号：US11045608

申请日：2005-01-31

申请人： Yoshiharu Hashimoto ,  Teru Yoneyama

发明人： Yoshiharu Hashimoto ,  Teru Yoneyama

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

CPC分类号： G09G3/3233 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2320/0276

摘要： A drive circuit for a display apparatus includes a gradation voltage generation circuit and a D/A conversion circuit. The gradation voltage generation circuit generates a plurality of different first gradation voltages and a plurality of different second gradation voltages. The D/A conversion circuit drives a light emitting element of a pixel through a data line with a gradation voltage based on one of the first gradation voltages as a first specific gradation voltage in a precharge period and drives the light emitting element of the pixel through the data line with a gradation current based on one of the second gradation voltages as a second specific gradation voltage. The D/A conversion circuit includes a voltage driver to drive the light emitting element, and a current driver to drive the light emitting element.

摘要翻译： 用于显示装置的驱动电路包括灰度电压产生电路和D / A转换电路。 灰度电压产生电路产生多个不同的第一灰度级电压和多个不同的第二灰度电压。 D / A转换电路在预充电期间，通过具有基于第一灰度等级电压之一的灰度电压的数据线驱动像素的发光元件作为第一特定灰度电压，并且驱动像素的发光元件通过 具有基于第二灰度级电压之一的灰度电流的数据线作为第二特定灰度电压。 D / A转换电路包括用于驱动发光元件的电压驱动器和用于驱动发光元件的电流驱动器。

公开(公告)号：US20050156635A1

公开(公告)日：2005-07-21

申请号：US11028672

申请日：2005-01-05

申请人： Teru Yoneyama ,  Yutaka Saeki

发明人： Teru Yoneyama ,  Yutaka Saeki

IPC分类号： H01L51/50 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32 ,  H01L33/00 ,  H03B1/00 ,  H03M1/74 ,  H04N3/12 ,  H04N5/20 ,  H05B33/08 ,  H05B33/14

CPC分类号： G09G3/32 ,  G09G3/3283 ,  G09G2300/08 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0673

摘要： Disclosed is a display driver that includes a first current driver circuit, which has a plurality of current sources for outputting current of a value decided based upon a reference current, and switch circuits that on/off control current paths between the plurality of current sources and a current output terminal based upon a prescribed lower-order bit signal of a video signal, for outputting a first output current conforming to the prescribed lower-order bit signal of the video signal; a second current driver circuit for outputting a second output current conforming to a higher-order bit signal of the video signal; and a current-source circuit for varying the reference current based upon the higher-order bit signal of the video signal. A current that is the result of combining the first and second output currents from the first and second current driver circuits is output as an output current. An amount of change in the output current that corresponds to a change of one LSB of the video signal is varied in accordance with the value of the video signal, the gamma characteristic is linearly approximated and the overall luminance of a display panel is controlled based upon a control signal from a luminance adjustment circuit.

摘要翻译： 公开了一种显示驱动器，其包括：第一电流驱动器电路，其具有用于输出基于参考电流确定的值的电流的多个电流源;以及开/关控制多个电流源之间的电流路径和 基于视频信号的规定的低位比特信号的电流输出端子，用于输出符合视频信号的规定的低位比特信号的第一输出电流; 第二电流驱动器电路，用于输出符合视频信号的高位位信号的第二输出电流; 以及电流源电路，用于基于视频信号的高阶位信号来改变参考电流。 将来自第一和第二电流驱动器电路的第一和第二输出电流组合的结果的电流作为输出电流输出。 对应于视频信号的一个LSB​​的变化的输出电流的变化量根据视频信号的值而变化，伽马特性被线性近似，并且基于显示面板的整体亮度被控制 来自亮度调节电路的控制信号。

公开(公告)号：US08614656B2

公开(公告)日：2013-12-24

申请号：US11515889

申请日：2006-09-06

申请人： Yoshiharu Hashimoto ,  Teru Yoneyama

发明人： Yoshiharu Hashimoto ,  Teru Yoneyama

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2320/0276

摘要： A drive circuit which outputs an output signal to an output terminal, includes a drive transistor configured to output a gradation current to the output terminal; a single differential amplifier; a resistance element connected with the drive transistor; and a plurality of switches. The plurality of switches are controlled such that a precharge voltage is outputted from the differential amplifier to the output terminal in a first period while blocking off an output from the drive transistor and such that a gradation current is outputted from the drive transistor to the output terminal in a second period after the first period.

摘要翻译： 向输出端子输出输出信号的驱动电路包括：驱动晶体管，被配置为向输出端子输出灰度电流; 单个差分放大器; 与驱动晶体管连接的电阻元件; 和多个开关。 多个开关被控制为使得在第一时间段内从差分放大器输出预充电电压到输出端子，同时阻止来自驱动晶体管的输出，并且从驱动晶体管输出灰度电流到输出端子 在第一个时期后的第二个时期。

公开(公告)号：US07443391B2

公开(公告)日：2008-10-28

申请号：US10801819

申请日：2004-03-17

申请人： Teru Yoneyama

发明人： Teru Yoneyama

IPC分类号： G09G5/00

CPC分类号： G05F3/262

摘要： A current drive circuit is provided with a bias generator and a current output unit; wherein the bias generator is provided with: p-channel MOS transistor, p-channel MOS transistor, and reference current source; and the current output unit is provided with: p-channel MOS transistor, switch means, p-channel MOS transistor, and output terminal.

摘要翻译： 电流驱动电路设有偏置发生器和电流输出单元; 其中所述偏置发生器设置有：p沟道MOS晶体管，p沟道MOS晶体管和参考电流源; 并且电流输出单元设置有：p沟道MOS晶体管，开关装置，p沟道MOS晶体管和输出端子。

公开(公告)号：US20060066548A1

公开(公告)日：2006-03-30

申请号：US11221890

申请日：2005-09-09

申请人： Teru Yoneyama ,  Yoshiharu Hashimoto

发明人： Teru Yoneyama ,  Yoshiharu Hashimoto

IPC分类号： G09G3/36

CPC分类号： G09G3/3685 ,  G09G2310/027

摘要： A sample-and-hold circuit according to the present invention includes an amplifier circuit amplifying a signal from an input terminal to output the amplified signal to an output terminal, a first switch connected to the input terminal, and a second switch arranged in parallel to the first switch and connected to the input terminal. Hence, an amplifier circuit operable at high speeds can be provided. In addition, a driver circuit for applying a grayscale voltage to each signal line of a display device includes a grayscale voltage output unit outputting a grayscale voltage, a precharge voltage generating unit generating a precharge voltage for a predetermined period before scanning, at a time of displaying on the display device, and an amplifier circuit amplifying an input signal to output the amplified signal to the display device.

摘要翻译： 根据本发明的采样和保持电路包括放大电路，放大来自输入端的信号，以将放大的信号输出到输出端，连接到输入端的第一开关和与第一开关并联布置的第二开关 第一个开关并连接到输入端。 因此，可以提供以高速操作的放大器电路。 此外，用于向显示装置的每个信号线施加灰度电压的驱动电路包括输出灰阶电压的灰度级电压输出单元，在扫描之前的预定时间段内产生预充电电压的预充电电压产生单元， 在显示装置上显示，放大电路放大输入信号，以将放大的信号输出到显示装置。

公开(公告)号：US20110050761A1

公开(公告)日：2011-03-03

申请号：US12839831

申请日：2010-07-20

申请人： Teru YONEYAMA

发明人： Teru YONEYAMA

IPC分类号： G09G5/02

CPC分类号： G09G3/325 ,  G09G3/2081 ,  G09G2310/0259 ,  G09G2310/0262 ,  G09G2320/0223

摘要： A display device uses a plurality of pixel circuits each of which includes a light-emitting element; a light-emission control switching element; a current control circuit for supplying a driving current, which corresponds to gray-level display data, to the light-emitting element via the light-emission control switching element; and a voltage control circuit, which includes a first capacitance element for storing a voltage corresponding to the gray-level display data, and controls ON/OFF operation of the light-emission switching element in accordance with the voltage stored. If the gray-level display data is data for causing the light-emitting element to display less than a certain luminance, the current control circuit supplies the light-emitting element with a constant driving current corresponding to the gray-level display data for displaying the certain luminance, and the voltage control circuit controls the ON time of the light-emission control switching element in accordance with a voltage stored.

摘要翻译： 显示装置使用多个像素电路，每个像素电路包括发光元件; 发光控制开关元件; 电流控制电路，用于经由发光控制开关元件向发光元件提供对应于灰度级显示数据的驱动电流; 以及电压控制电路，其包括用于存储与灰度级显示数据相对应的电压的第一电容元件，并且根据存储的电压来控制发光开关元件的接通/断开操作。 如果灰度级显示数据是用于使发光元件显示小于一定亮度的数据，则电流控制电路向与发送元件的灰度级显示数据相对应的恒定驱动电流供给发光元件， 一定的亮度，并且电压控制电路根据存储的电压来控制发光控制开关元件的接通时间。

公开(公告)号：US07595776B2

公开(公告)日：2009-09-29

申请号：US11045608

申请日：2005-01-31

申请人： Yoshiharu Hashimoto ,  Teru Yoneyama

发明人： Yoshiharu Hashimoto ,  Teru Yoneyama

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2320/0276

摘要： A drive circuit for a display apparatus includes a gradation voltage generation circuit and a D/A conversion circuit. The gradation voltage generation circuit generates a plurality of different first gradation voltages and a plurality of different second gradation voltages. The D/A conversion circuit drives a light emitting element of a pixel through a data line with a gradation voltage based on one of the first gradation voltages as a first specific gradation voltage in a precharge period and drives the light emitting element of the pixel through the data line with a gradation current based on one of the second gradation voltages as a second specific gradation voltage. The D/A conversion circuit includes a voltage driver to drive the light emitting element, and a current driver to drive the light emitting element.

摘要翻译： 用于显示装置的驱动电路包括灰度电压产生电路和D / A转换电路。 灰度电压产生电路产生多个不同的第一灰度级电压和多个不同的第二灰度电压。 D / A转换电路在预充电期间，通过具有基于第一灰度等级电压之一的灰度电压的数据线驱动像素的发光元件作为第一特定灰度电压，并且驱动像素的发光元件通过 具有基于第二灰度级电压之一的灰度电流的数据线作为第二特定灰度电压。 D / A转换电路包括用于驱动发光元件的电压驱动器和用于驱动发光元件的电流驱动器。

公开(公告)号：US07482759B2

公开(公告)日：2009-01-27

申请号：US11038163

申请日：2005-01-21

申请人： Teru Yoneyama ,  Yutaka Saeki

发明人： Teru Yoneyama ,  Yutaka Saeki

IPC分类号： G09G3/10

CPC分类号： G09G3/32 ,  G09G3/3283 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0626

摘要： Disclosed is a display driver that includes a first current driver circuit, a second current driver circuit and a reference current source circuit. The first current driver circuit, which has plural current sources the output current values of which are determined based on a reference current, and switch circuits for on/off controlling the current path between the plural current sources and the current output terminal based on video signal composed of plural bits. The first current driver circuit outputs a first output current conforming to the video signal. The second current driver circuit outputs the second output current conforming to the video signal, while the reference current source circuit variably controls the reference current based on the value of the video signal. A current that is the result of combining the first and second output currents from the first and second current driver circuits is output as an output current. An amount of change in the output current that corresponds to a change of one LSB of the video signal, is varied in accordance with the value of the video signal, the gamma characteristic is approximated by piece-wise linear approximation and the overall luminance of the display pane is variably controlled based on a control signal from a panel luminance adjustment circuit.

摘要翻译： 公开了一种显示驱动器，其包括第一电流驱动器电路，第二电流驱动器电路和参考电流源电路。 第一电流驱动电路，其具有基于参考电流确定其输出电流值的多个电流源，以及基于视频信号来控制多个电流源与当前输出端之间的电流路径的开关电路 由多个位组成。 第一电流驱动器电路输出符合视频信号的第一输出电流。 第二电流驱动器电路输出符合视频信号的第二输出电流，而参考电流源电路基于视频信号的值可变地控制参考电流。 将来自第一和第二电流驱动器电路的第一和第二输出电流组合的结果的电流作为输出电流输出。 对应于视频信号的一个LSB​​的变化的输出电流的变化量根据视频信号的值而变化，伽马特性通过分段线性近似和总亮度近似 基于来自面板亮度调整电路的控制信号可变地控制显示面板。