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    • 11. 发明授权
    • Drive circuit, electro-optical device and driving method thereof
    • 驱动电路,电光装置及其驱动方法
    • US07034797B2
    • 2006-04-25
    • US10455652
    • 2003-06-05
    • Katsuhiko Maki
    • Katsuhiko Maki
    • G09G3/36
    • G09G3/3688G09G2310/027G09G2310/0297G09G2330/021
    • A drive circuit is provided that can drive a display panel with low power consumption, and an electro optical device including the drive circuit and its drive method are included. Switching signals RSEL, GSEL, and BSEL for demultiplexing are produced so as to control turning switching elements DSWR, DSWG, and DSWB for demultiplexing on and off, which separate data signal where R, G, and B are multiplexed and transmitted. An overlapped period, for periods of activating RSEL, GSEL, and BSEL is set between the timing of changing polarity of common voltage and the timing of assuring writing data signal to a pixel electrode. A drive circuit includes a reference voltage production circuit and a digital to analog conversion circuit and an output circuit, which outputs a programmed voltage (a reference voltage having the same phase as the common voltage) during the overlapped period. The first reference voltage production circuit includes plurality of operational amplifiers and the first and second voltage division circuits.
    • 提供了能够以低功耗驱动显示面板的驱动电路,并且包括包括驱动电路及其驱动方法的电光装置。 产生用于解复用的开关信号RSEL,GSEL和BSEL,以便控制转换开关元件DSWR,DSWG和DSWB用于多路分解导通和关断,分离数据信号,其中R,G和B被复用和发送。 在改变公共电压的极性的定时和确保将数据信号写入像素电极的定时之间,设置激活RSEL,GSEL和BSEL的周期。 驱动电路包括参考电压产生电路和数模转换电路和输出电路,其在重叠周期期间输出编程电压(与公共电压具有相同相位的参考电压)。 第一参考电压产生电路包括多个运算放大器和第一和第二分压电路。
    • 13. 发明授权
    • Operation amplifier circuit, drive circuit and method of controlling operation amplifier circuit
    • 运算放大电路,驱动电路及控制运算放大电路的方法
    • US06753731B2
    • 2004-06-22
    • US10356353
    • 2003-01-30
    • Katsuhiko Maki
    • Katsuhiko Maki
    • H03F345
    • H03F3/3023H03F1/0261H03F3/45183
    • An operational amplifier circuit includes a differential section, an output section having drive transistors PT15 and NT15, a voltage setting circuit which sets a programming voltage at a node N1, and a capacitance element C1. The programming voltage is set to the node N1, and then a change in voltage at an output node NQ1 of the differential section is transferred to the node N1 by the capacitance element C1. Switching elements SW1 and SW2 are turned off before the programming voltage is set to the node N1, and are turned on after the setting. A switching element SW4 is turned on and the node N1 is set to VSS, and subsequently the node N1 is set to the programming voltage (VDD−VTH) by turning on the switching element SW3. The programming voltage is set in a switching period between scan periods.
    • 运算放大器电路包括差分部分,具有驱动晶体管PT15和NT15的输出部分,设置节点N1处的编程电压的电压设置电路和电容元件C1。 编程电压被设定为节点N1,然后通过电容元件C1将差分部分的输出节点NQ1的电压变化传送到节点N1。 开关元件SW1和SW2在编程电压被设置到节点N1之前被断开,并且在设置之后被接通。 开关元件SW4导通,节点N1设定为VSS,通过接通开关元件SW3,将节点N1设定为编程电压(VDD-VTH)。 编程电压设置在扫描周期之间的切换周期内。
    • 15. 发明授权
    • D/A conversion circuit, data driver, integrated circuit device, and electronic instrument
    • D / A转换电路,数据驱动器,集成电路器件和电子仪器
    • US08174475B2
    • 2012-05-08
    • US12251865
    • 2008-10-15
    • Motoaki NishimuraHaruo KamijoKatsuhiko Maki
    • Motoaki NishimuraHaruo KamijoKatsuhiko Maki
    • G09G3/36
    • G09G3/3696G09G2300/0408G09G2310/0291
    • A D/A conversion circuit includes a first D/A converter and a second D/A converter that respectively output a first voltage and a second voltage. An ith two-input selector among a plurality of input selectors of the first D/A converter selects a (4i+1)th input voltage or a (4i+3)th input voltage based on input data, and outputs the selected input voltage to a selector of a selector block in the subsequent stage. An ith three-input selector among a plurality of three-input selectors of the second D/A converter selects a 4ith input voltage, a (4i+2)th input voltage, or a (4i+4)th input voltage based on the input data, and outputs the selected input voltage to a selector of a selector block in the subsequent stage.
    • D / A转换电路包括分别输出第一电压和第二电压的第一D / A转换器和第二D / A转换器。 第一D / A转换器的多个输入选择器中的第二双输入选择器基于输入数据选择(4i + 1)输入电压或第(4i + 3)输入电压,并输出所选择的输入电压 到后续阶段中的选择器块的选择器。 第二D / A转换器的多个三输入选择器中的第三个三输入选择器基于第二输入选择器选择第四输入电压,第(4i + 2)输入电压或第(4i + 4)输入电压, 输入数据,并将选择的输入电压输出到下一级的选择器块的选择器。
    • 18. 发明申请
    • DATA DRIVER, INTEGRATED CIRCUIT DEVICE, AND ELECTRONIC INSTRUMENT
    • 数据驱动器,集成电路器件和电子仪器
    • US20090096816A1
    • 2009-04-16
    • US12251776
    • 2008-10-15
    • Haruo KAMIJOKatsuhiko MAKI
    • Haruo KAMIJOKatsuhiko MAKI
    • G09G5/10
    • G09G3/3688G09G2310/0294
    • A data driver includes a D/A conversion circuit that receives grayscale data and outputs a first grayscale voltage and a second grayscale voltage corresponding to the grayscale data by time division in each of first to Nth sampling periods, and first to Nth data line driver circuits that share the D/A conversion circuit. Each of the first to Nth data line driver circuits includes a grayscale generation amplifier that samples the first grayscale voltage and the second grayscale voltage output from the D/A conversion circuit in a corresponding sampling period among the first to Nth sampling periods, and generates a grayscale voltage between the first grayscale voltage and the second grayscale voltage.
    • 数据驱动器包括D / A转换电路,其接收灰阶数据,并且在第一至第N采样周期中的每一个中以时分方式输出对应于灰度数据的第一灰度电压和第二灰度电压,以及第一至第N数据线驱动电路 共享D / A转换电路。 第一至第N数据线驱动器电路中的每一个包括在第一至第N采样周期中的相应采样周期中对从D / A转换电路输出的第一灰度电压和第二灰度电压进行采样的灰度级放大器, 第一灰度电压与第二灰阶电压之间的灰度电压。
    • 19. 发明授权
    • Data driver, display device, and method for controlling data driver
    • 数据驱动程序,显示设备和控制数据驱动程序的方法
    • US07477271B2
    • 2009-01-13
    • US11071776
    • 2005-03-03
    • Katsuhiko Maki
    • Katsuhiko Maki
    • G09G3/36G09G5/10
    • G09G3/3688G09G2310/027
    • A data driver is provided comprising: a gamma correction resistor for outputting a gray scale voltage, a gray scale voltage supply switch, first and second operational amplifiers for driving a first and second data lines, inputs of these first and second operational amplifiers being electrically coupled with the gray scale voltage signal line, and first and second bypass switches for bypassing each operational amplifier. In a first period of a drive period, the first and second data lines are driven by the first and second operational amplifiers based on the gray scale voltage of a gray scale voltage signal. In a second period of the drive period, the gray scale voltage supply switch is set to a cut-off state, whereby the first data line is electrically coupled with the second data line via the gray scale voltage signal line, the first bypass switch, and the second bypass switch.
    • 提供了一种数据驱动器,包括:用于输出灰度级电压的伽马校正电阻器,灰度级电压供应开关,用于驱动第一和第二数据线的第一和第二运算放大器,这些第一和第二运算放大器的输入电耦合 具有灰度级电压信号线,以及用于旁路每个运算放大器的第一和第二旁路开关。 在驱动周期的第一周期中,第一和第二数据线由第一和第二运算放大器基于灰度级电压信号的灰度级电压驱动。 在驱动期间的第二期间,灰度电压供给开关被设定为切断状态,由此第一数据线经由灰度级电压信号线与第二数据线电耦合,第一旁路开关, 和第二旁路开关。
    • 20. 发明申请
    • Driver circuit, electro-optical device, and electronic instrument
    • 驱动电路,电光装置和电子仪器
    • US20070008265A1
    • 2007-01-11
    • US11453057
    • 2006-06-15
    • Katsuhiko Maki
    • Katsuhiko Maki
    • G09G3/36
    • G09G3/3688G09G3/3696G09G2300/0426G09G2310/027G09G2320/0276
    • A driver circuit includes first and second color component first and second grayscale signal line groups which extend in a first direction and to which grayscale voltages are supplied, first and second voltage select circuits which output the grayscale voltages corresponding to first and second grayscale data from the grayscale voltages supplied to the first and second grayscale signal line groups, and first and second output circuits which drive data lines based on the grayscale voltages output from the first and second voltage select circuits. The first and second voltage select circuits are disposed to be adjacent in the first direction in an upper layer or a lower layer of the second grayscale signal line group, and the grayscale voltages supplied to the first grayscale signal line group are supplied to the first voltage select circuit through interconnects extending in a second direction which intersects the first direction.
    • 驱动器电路包括第一和第二颜色分量第一和第二灰度信号线组,其在第一方向上延伸并且被提供灰度级电压;第一和第二电压选择电路,其输出对应于第一和第二灰阶数据的灰度电压 提供给第一和第二灰阶信号线组的灰度电压以及基于从第一和第二电压选择电路输出的灰度电压来驱动数据线的第一和第二输出电路。 第一和第二电压选择电路被设置为在第二灰度信号线组的上层或下层中沿第一方向相邻,并且提供给第一灰阶信号线组的灰度电压被提供给第一电压 通过在与第一方向相交的第二方向延伸的互连来选择电路。