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1. 发明授权

US07405622B2 Operational amplifier with less offset 失效
标题翻译：运算放大器偏移较小
公开(公告)号：US07405622B2
公开(公告)日：2008-07-29
申请号：US11398546
申请日：2006-04-06
申请人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
发明人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
IPC分类号： H03F3/26
CPC分类号： H03F3/45192 , G09G3/3688 , H03F3/3022 , H03F3/45345 , H03F3/45744 , H03F2203/30081 , H03F2203/30114 , H03F2203/45212 , H03F2203/45366 , H03F2203/45512 , H03F2203/45648 , H03F2203/45681 , H03F2203/45732
摘要： A differential amplifier includes an input stage circuit including a first differential pair and a second differential pair which are complementary to each other; a first current mirror circuit connected with the first differential pair and configured to function as an active load; a second current mirror circuit connected with the second differential pair and configured to function as an active load; an output stage circuit having a pair of output transistors connected in series between a higher power supply and a lower power supply; an operation point setting circuit configured to set an operation point of the output transistors; and a floating constant current source connected between an input terminal of the first current mirror circuit and an input terminal of the second current mirror circuit, and configured to supply a constant current. The first current mirror circuit and the second current mirror circuit supply superimpose an output of the input stage circuit on a current corresponding to the constant current by the floating constant current source to supply to the operation point setting circuit.
摘要翻译：差分放大器包括：输入级电路，包括彼此互补的第一差分对和第二差分对; 与所述第一差分对连接并被配置为用作有效负载的第一电流镜电路; 与所述第二差分对连接并被配置为用作有效负载的第二电流镜电路; 输出级电路，其具有串联连接在较高电源和较低电源之间的一对输出晶体管; 操作点设定电路，被配置为设置所述输出晶体管的操作点; 以及浮置恒流源，连接在第一电流镜电路的输入端和第二电流镜电路的输入端之间，并且被配置为提供恒定电流。第一电流镜电路和第二电流镜电路电源通过浮动恒流源将输入级电路的输出叠加在与恒定电流相对应的电流上，以提供给操作点设置电路。

2. 发明申请

US20060226877A1 Operational amplifier with less offset 失效
标题翻译：运算放大器偏移较小
公开(公告)号：US20060226877A1
公开(公告)日：2006-10-12
申请号：US11398546
申请日：2006-04-06
申请人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
发明人： Kouichi Nishimura , Atsushi Shimatani , Motoyasu Ichimura
IPC分类号： G01R19/00
CPC分类号： H03F3/45192 , G09G3/3688 , H03F3/3022 , H03F3/45345 , H03F3/45744 , H03F2203/30081 , H03F2203/30114 , H03F2203/45212 , H03F2203/45366 , H03F2203/45512 , H03F2203/45648 , H03F2203/45681 , H03F2203/45732
摘要： A differential amplifier includes an input stage circuit including a first differential pair and a second differential pair which are complementary to each other; a first current mirror circuit connected with the first differential pair and configured to function as an active load; a second current mirror circuit connected with the second differential pair and configured to function as an active load; an output stage circuit having a pair of output transistors connected in series between a higher power supply and a lower power supply; an operation point setting circuit configured to set an operation point of the output transistors; and a floating constant current source connected between an input terminal of the first current mirror circuit and an input terminal of the second current mirror circuit, and configured to supply a constant current. The first current mirror circuit and the second current mirror circuit supply superimpose an output of the input stage circuit on a current corresponding to the constant current by the floating constant current source to supply to the operation point setting circuit.
摘要翻译：差分放大器包括：输入级电路，包括彼此互补的第一差分对和第二差分对; 与所述第一差分对连接并被配置为用作有效负载的第一电流镜电路; 与所述第二差分对连接并被配置为用作有效负载的第二电流镜电路; 输出级电路，其具有串联连接在较高电源和较低电源之间的一对输出晶体管; 操作点设定电路，被配置为设置所述输出晶体管的操作点; 以及浮置恒流源，连接在第一电流镜电路的输入端和第二电流镜电路的输入端之间，并且被配置为提供恒定电流。第一电流镜电路和第二电流镜电路电源通过浮动恒流源将输入级电路的输出叠加在与恒定电流相对应的电流上，以提供给操作点设置电路。

3. 发明授权

US07683714B2 Differential amplifier and display device using the same 有权
标题翻译：差分放大器和显示设备使用相同
公开(公告)号：US07683714B2
公开(公告)日：2010-03-23
申请号：US11645612
申请日：2006-12-27
申请人： Kouichi Nishimura , Atsushi Shimatani , Toshikazu Murata
发明人： Kouichi Nishimura , Atsushi Shimatani , Toshikazu Murata
IPC分类号： H03F3/45
CPC分类号： H03F3/45192 , H03F3/3022 , H03F3/45744 , H03F2203/45236 , H03F2203/45281 , H03F2203/45342 , H03F2203/45354 , H03F2203/45684
摘要： Disclosed is a differential amplifier which comprises a differential pair comprising depletion-type first and second N-channel MOS transistors, a first current source that supplies a current for the differential pair, a current mirror circuit formed by transistor pairs connected in cascode fashion in two stages, for connecting an output pair of the differential pair in folded connection, second and third current sources connected to an input terminal of the current mirror circuit and an output terminal of the current circuit, respectively, and a buffer amplifier with that has an input terminal connected to the output terminal of the current mirror circuit and has an output terminal connected to an output terminal of the differential amplifier.
摘要翻译：公开了一种差分放大器，其包括包括耗尽型第一和第二N沟道MOS晶体管的差分对，提供用于差分对的电流的第一电流源，由以二阶共享方式连接的晶体管对形成的电流镜电路用于连接折叠连接中的差分对的输出对，分别连接到电流镜电路的输入端的第二和第三电流源以及电流电路的输出端，以及具有输入的缓冲放大器端子连接到电流镜电路的输出端，并具有连接到差分放大器的输出端的输出端。

4. 发明申请

US20110205193A1 Operational amplifier with decreased through current, and display panel driver and display device incorporating the same 审中-公开
标题翻译：运算放大器具有降低的直流电流，以及显示面板驱动器和包含其的显示装置
公开(公告)号：US20110205193A1
公开(公告)日：2011-08-25
申请号：US12929840
申请日：2011-02-18
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： G09G5/00 , H03F3/45 , H03F3/16
CPC分类号： H03F3/3023 , H03F3/45183 , H03F3/4521 , H03F2200/411 , H03F2203/45352 , H03F2203/45366 , H03F2203/45564
摘要： An operational amplifier is provided with: a high-side output transistor connected between an output terminal and a positive power supply line; a low-side output transistor connected between the output terminal and a negative power supply line; a first capacitor element connected between a first node and the output terminal; a second capacitor element connected between a second node and the output terminal; a first PMOS transistor having a source connected to the gate of the high-side output transistor and a drain connected to the gate of the low-side output transistor; a first NMOS transistor having a source connected to the gate of the low-side output transistor and a drain connected to the gate of the high-side output transistor; a second PMOS transistor having a source connected to the first node and a drain connected to the gate of the high-side output transistor; and a second NMOS transistor having a source connected to the second node and a drain connected to the gate of the low-side output transistor. The gates of the first and second PMOS transistors are commonly connected and fed with a first bias voltage, and the gates of the first and second NMOS transistors are commonly connected and fed with a second bias voltage.
摘要翻译：运算放大器具有：连接在输出端和正电源线之间的高侧输出晶体管; 连接在输出端子和负电源线之间的低侧输出晶体管; 连接在第一节点和输出端之间的第一电容器元件; 连接在第二节点和输出端之间的第二电容器元件; 第一PMOS晶体管，其源极连接到高侧输出晶体管的栅极，漏极连接到低侧输出晶体管的栅极; 第一NMOS晶体管，其源极连接到低侧输出晶体管的栅极，漏极连接到高侧输出晶体管的栅极; 具有连接到第一节点的源极和连接到高侧输出晶体管的栅极的漏极的第二PMOS晶体管; 以及具有连接到第二节点的源极和连接到低侧输出晶体管的栅极的漏极的第二NMOS晶体管。第一和第二PMOS晶体管的栅极共同连接并馈送第一偏置电压，并且第一和第二NMOS晶体管的栅极共同连接并馈送第二偏置电压。

5. 发明申请

US20110025655A1 OPERATIONAL AMPLIFIER AND SEMICONDUCTOR DEVICE USING THE SAME 审中-公开
标题翻译：操作放大器和使用相同的半导体器件
公开(公告)号：US20110025655A1
公开(公告)日：2011-02-03
申请号：US12847664
申请日：2010-07-30
申请人： Kouichi Nishimura , Atsushi Shimatani , Hiromichi Ohtsuka
发明人： Kouichi Nishimura , Atsushi Shimatani , Hiromichi Ohtsuka
IPC分类号： H03F3/45 , G06F3/038
CPC分类号： H03F3/505 , G09G3/3688 , H03F3/3022 , H03F3/45219 , H03F3/45475 , H03F2203/45138 , H03F2203/45302 , H03F2203/45311 , H03F2203/45396 , H03F2203/45631 , H03F2203/45722 , H03F2203/5031
摘要： An operational amplifier is provide with: a first MOS transistor pair connected to a non-inverting input terminal and an inverting input terminal; an intermediate stage connected to the first MOS transistor pair connected to the first MOS transistor pair; a first output transistor having a drain connected to an output terminal; and a first source follower. The first source follower is inserted between a gate of the first output transistor and a first output node of the intermediate stage.
摘要翻译：运算放大器提供：连接到非反相输入端和反相输入端的第一MOS晶体管对; 连接到连接到第一MOS晶体管对的第一MOS晶体管对的中间级; 第一输出晶体管，其漏极连接到输出端子; 和第一源跟随器。第一源极跟随器被插入在第一输出晶体管的栅极和中间级的第一输出节点之间。

6. 发明申请

US20050093629A1 Differential amplifying circuit 有权
标题翻译：差分放大电路
公开(公告)号：US20050093629A1
公开(公告)日：2005-05-05
申请号：US10975935
申请日：2004-10-29
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： G09G3/36 , G09G3/20 , H03F3/45
CPC分类号： H03F3/4521 , H03F3/45183 , H03F2203/45682
摘要： A differential amplifier circuit includes a first differential transistor pair, a second differential transistor pair, an adder section and an amplifying unit. The first differential transistor pair receives first and second input signals and an output signal as a third input signal, and the second differential transistor pair receives the first and second input signals and the output signal as a fourth input signal. The adder section adds first output signals from the first differential transistor pair and second output signals from the second differential transistor pair, and the amplifying unit amplifies an addition resultant signal from the adder section to output to the first and second differential transistor pairs.
摘要翻译：差分放大器电路包括第一差分晶体管对，第二差分晶体管对，加法器部分和放大单元。第一差分晶体管对接收第一和第二输入信号以及输出信号作为第三输入信号，第二差分晶体管对将第一和第二输入信号和输出信号作为第四输入信号接收。加法器部分将来自第一差分晶体管对的第一输出信号和来自第二差分晶体管对的第二输出信号相加，并且放大单元放大来自加法器部分的相加结果信号以输出到第一和第二差分晶体管对。

7. 发明申请

US20090179890A1 Operational amplifier, drive circuit, and method for driving liquid crystal display device 有权
标题翻译：运算放大器，驱动电路及驱动液晶显示装置的方法
公开(公告)号：US20090179890A1
公开(公告)日：2009-07-16
申请号：US12314589
申请日：2008-12-12
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： H03F3/45 , G09G5/00
CPC分类号： G09G3/3688
摘要： The present invention enables rising and falling slew rates to be symmetrized and secures a drive current at the time of 2H inversion driving. An operational amplifier in accordance with one aspect of the present invention includes: a first output transistor and a second output transistor connected in series between a first power supply and a second power supply; an output terminal connected to a node between the first output transistor and the second output transistor; a phase-compensating element provided either between the gate of the first output transistor and the output terminal or between the gate of the second output transistor and the output terminal; and a floating current source connected between the gate of the first output transistor and the gate of the second output transistor.
摘要翻译：本发明使得上升和下降转换速率对称化，并且在2H反转驱动时确保驱动电流。根据本发明的一个方面的运算放大器包括：串联连接在第一电源和第二电源之间的第一输出晶体管和第二输出晶体管; 连接到第一输出晶体管和第二输出晶体管之间的节点的输出端子; 相位补偿元件，其设置在所述第一输出晶体管的栅极与所述输出端子之间或所述第二输出晶体管的栅极与所述输出端子之间; 以及连接在第一输出晶体管的栅极和第二输出晶体管的栅极之间的浮动电流源。

8. 发明授权

US07535302B2 Operational amplifier and display device 有权
标题翻译：运算放大器和显示设备
公开(公告)号：US07535302B2
公开(公告)日：2009-05-19
申请号：US11976751
申请日：2007-10-26
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： H03F3/45
CPC分类号： H03F3/4521 , H03F3/3022 , H03F3/45183 , H03F3/45753 , H03F2203/45212 , H03F2203/45534 , H03F2203/45726
摘要： To reduce the apparent effect of offset voltage by making the offset voltage spatially scattered. An operational amplifier 1 includes: a first differential pair having N-channel MOS transistors MN1 and MN2; a second differential pair having P-channel MOS transistors MP1 and MP2; an output stage having output transistors NP3 and MN3; first and second active loads 11 and 12 having a switch, adapted to convert differential outputs from the first and second differential pairs to a single output, respectively; first and second bias circuits 13 and 14 having a switch, adapted to select one of two outputs of each of the first and second active loads 11 and 12 having the switch and to determine idling current of the MP3 and MN3, respectively; first and second switches SW1 and SW2 adapted to respectively connect an output terminal and an input terminal to one of the gates of each of the first and second differential pairs; and a terminal 17 adapted to receive an offset cancellation signal for controlling switching functions and the switches in linkage with each other.
摘要翻译：通过使偏移电压在空间上分散来减少偏移电压的明显影响。运算放大器1包括：具有N沟道MOS晶体管MN1和MN2的第一差分对; 具有P沟道MOS晶体管MP1和MP2的第二差分对; 具有输出晶体管NP3和MN3的输出级; 具有开关的第一和第二有源负载11和12分别适于将来自第一和第二差分对的差分输出转换为单个输出; 第一和第二偏置电路13和14具有开关，适于选择具有开关的第一和第二有源负载11和12中的每一个的两个输出中的一个，并分别确定MP3和MN3的空转电流; 适于分别将输出端子和输入端子连接到第一和第二差分对中的每一个的栅极之一的第一和第二开关SW1和SW2; 以及适于接收用于控制开关功能的偏移消除信号和彼此联动的开关的端子17。

9. 发明申请

US20070159249A1 Differential amplifier and display device using the same 有权
标题翻译：差分放大器和显示设备使用相同
公开(公告)号：US20070159249A1
公开(公告)日：2007-07-12
申请号：US11645612
申请日：2006-12-27
申请人： Kouichi Nishimura , Atsushi Shimatani , Toshikazu Murata
发明人： Kouichi Nishimura , Atsushi Shimatani , Toshikazu Murata
IPC分类号： H03F3/45
CPC分类号： H03F3/45192 , H03F3/3022 , H03F3/45744 , H03F2203/45236 , H03F2203/45281 , H03F2203/45342 , H03F2203/45354 , H03F2203/45684
摘要： Disclosed is a differential amplifier which comprises a differential pair comprising depletion-type first and second N-channel MOS transistors, a first current source that supplies a current for the differential pair, a current mirror circuit formed by transistor pairs connected in cascode fashion in two stages, for connecting an output pair of the differential pair in folded connection, second and third current sources connected to an input terminal of the current mirror circuit and an output terminal of the current circuit, respectively, and a buffer amplifier with that has an input terminal connected to the output terminal of the current mirror circuit and has an output terminal connected to an output terminal of the differential amplifier.
摘要翻译：公开了一种差分放大器，其包括包括耗尽型第一和第二N沟道MOS晶体管的差分对，提供用于差分对的电流的第一电流源，由以二阶共享方式连接的晶体管对形成的电流镜电路用于连接折叠连接中的差分对的输出对，分别连接到电流镜电路的输入端的第二和第三电流源以及电流电路的输出端，以及具有输入的缓冲放大器端子连接到电流镜电路的输出端，并具有连接到差分放大器的输出端的输出端。

10. 发明授权

US08237693B2 Operational amplifier, drive circuit, and method for driving liquid crystal display device 有权
标题翻译：运算放大器，驱动电路及驱动液晶显示装置的方法
公开(公告)号：US08237693B2
公开(公告)日：2012-08-07
申请号：US12314589
申请日：2008-12-12
申请人： Kouichi Nishimura , Atsushi Shimatani
发明人： Kouichi Nishimura , Atsushi Shimatani
IPC分类号： G09G5/00 , H03F3/45
CPC分类号： G09G3/3688
摘要： The present invention enables rising and falling slew rates to be symmetrized and secures a drive current at the time of 2H inversion driving. An operational amplifier in accordance with one aspect of the present invention includes: a first output transistor and a second output transistor connected in series between a first power supply and a second power supply; an output terminal connected to a node between the first output transistor and the second output transistor; a phase-compensating element provided either between the gate of the first output transistor and the output terminal or between the gate of the second output transistor and the output terminal; and a floating current source connected between the gate of the first output transistor and the gate of the second output transistor.
摘要翻译：本发明使得上升和下降转换速率对称化，并且在2H反转驱动时确保驱动电流。根据本发明的一个方面的运算放大器包括：串联连接在第一电源和第二电源之间的第一输出晶体管和第二输出晶体管; 连接到第一输出晶体管和第二输出晶体管之间的节点的输出端子; 相位补偿元件，其设置在所述第一输出晶体管的栅极与所述输出端子之间或所述第二输出晶体管的栅极与所述输出端子之间; 以及连接在第一输出晶体管的栅极和第二输出晶体管的栅极之间的浮动电流源。

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