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    • 4. 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。
    • 6. 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。
    • 10. 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
    • US20060284806A1
    • 2006-12-21
    • US11436038
    • 2006-05-18
    • Katsuhiko Maki
    • Katsuhiko Maki
    • G09G3/36
    • G09G3/3688G09G3/3696G09G2310/027G09G2330/02G09G2330/021G09G2360/16
    • A driver circuit includes an operational amplifier OPC1 which drives a data line by a rail-to-rail operation or a non-rail-to-rail operation based on a grayscale voltage corresponding to one of first to Pth (P is an integer of four or more) grayscale values, and an operational amplifier control section OPCC1 which causes the operational amplifier OPC1 to perform the rail-to-rail operation or the non-rail-to-rail operation based on grayscale data. When the sth (1≦s≦P, s is an integer) grayscale value corresponding to the grayscale data is in a range of the qth (1
    • 驱动器电路包括运算放大器OPC 1,其通过轨到轨操作或非轨到轨操作来驱动数据线,该运算放大器基于与第一至第 Pth(P是四个或更多个的整数)灰度值,以及使运算放大器OPC 1执行轨至轨的运算放大器控制部分OPCC1 < 基于灰度数据的轨道操作或非轨到轨操作。 当与灰度级数据对应的sth(1 <= s <= P,s为整数)灰度级值在q(1 基于与sth灰度值对应的灰度电压,通过非轨到轨操作来驱动数据线, 当灰度级灰度值不在第q至第r灰度值的范围内时,运算放大器OPC 1 通过轨到轨操作基于对应于 sth灰度值。