公开(公告)号：US20070159250A1

公开(公告)日：2007-07-12

申请号：US11648530

申请日：2007-01-03

申请人： Hiroshi Tsuchi ,  Junichiro Ishii ,  Kouichi Nishimura

发明人： Hiroshi Tsuchi ,  Junichiro Ishii ,  Kouichi Nishimura

IPC分类号： H03F3/45

CPC分类号： H03F3/45233 ,  H03F2203/45726

摘要： A differential amplifying circuit that includes a differential pair and a cascode current mirror circuit that forms the load circuit of this differential pair. The cascode current mirror circuit includes a control-terminal-coupled first transistor pair, and second and third transistor pairs that receive first and second bias signals at coupled control terminals, respectively. The second transistor pair is straight-connected between the first transistor pair and the input end and the output end of the cascode current mirror circuit, and the third transistor pair is cross-connected between the first transistor pair and the input end and the output end of the cascode current mirror circuit. The second and third transistor pairs are controlled so as to each be placed in active and inactive states by changing over voltage values of the first and second bias signals, with control being exercised in such a manner that when one of these transistor pairs is in an active state, the other is in an inactive state.

摘要翻译： 一种差分放大电路，其包括形成该差分对的负载电路的差分对和共源共栅电流镜电路。 共源共栅电流镜电路包括控制端耦合的第一晶体管对以及在耦合的控制端分别接收第一和第二偏置信号的第二和第三晶体管对。 第二晶体管对直接连接在第一晶体管对与共源共栅电流镜电路的输入端和输出端之间，第三晶体管对交叉连接在第一晶体管对与输入端之间，输出端 的共源共栅电流镜电路。 通过改变第一和第二偏置信号的电压值来控制第二和第三晶体管对，以便各自通过改变第一和第二偏置信号的电压值而被置于有功和无效状态，其中控制是以这样的方式进行的：当这些晶体管对中的一个处于 活动状态，另一个处于非活动状态。

公开(公告)号：US20070146042A1

公开(公告)日：2007-06-28

申请号：US11645687

申请日：2006-12-27

申请人： Hiroshi Tsuchi ,  Daigo Miyasaka

发明人： Hiroshi Tsuchi ,  Daigo Miyasaka

IPC分类号： H03L5/00

CPC分类号： H03K3/35613

摘要： A level shift circuit operates normally when amplitude of input signal is small and amplitude of output signal is large. First and second terminals receive an input signal and its complementary signal having a first amplitude. Third and fourth terminals output an output signal and its complementary signal having a second amplitude, which is larger than the first amplitude. Output circuit comprises first and second transistors of first polarity respectively connected between first power supply and fourth and third terminals, respectively. Third and fourth transistors of second polarity, respectively, are connected between second power supply and fourth and third terminals, respectively, having control ends connected to the third and the fourth terminals, respectively. First current control circuit controls so that a current driving the fourth terminal flows through the first transistor according to the input signal and the complementary signal of the output signal. Second current control circuit controls so that a current driving the third terminal flows through the second transistor according to the complementary signal of the input signal and the output signal.

摘要翻译： 当输入信号的幅度小，输出信号的幅度大时，电平移位电路正常工作。 第一和第二终端接收输入信号及其具有第一幅度的互补信号。 第三和第四端子输出输出信号，其互补信号具有大于第一幅度的第二幅度。 输出电路包括分别连接在第一电源和第四和第三端子之间的第一极性的第一和第二晶体管。 第二极性的第三和第四晶体管分别连接在第二电源和第四和第三端子之间，分别具有连接到第三和第四端子的控制端。 第一电流控制电路控制，使得驱动第四端子的电流根据输入信号和输出信号的互补信号流过第一晶体管。 控制第二电流控制电路，使得驱动第三端子的电流根据输入信号和输出信号的互补信号流过第二晶体管。

公开(公告)号：US20070085608A1

公开(公告)日：2007-04-19

申请号：US11526636

申请日：2006-09-26

申请人： Masao Iriguchi ,  Hiroshi Tsuchi

发明人： Masao Iriguchi ,  Hiroshi Tsuchi

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  G09G3/3688 ,  G09G2310/027 ,  H03F2203/45616 ,  H03F2203/45631 ,  H03F2203/45656 ,  H03F2203/45682 ,  H03F2203/45728 ,  H03M1/765

摘要： Disclosed is a differential amplifier of a multi-level output type comprising a load circuit including a diode-connected first transistor with a source thereof connected to a power supply and a second transistor with a source thereof connected to the power supply and connected to a gate of the first transistor through a capacitor, a differential pair including a third transistor and a fourth transistor with sources thereof connected in common and drains thereof connected to drains of the first and second transistors, respectively, a current source for supplying a current to the differential pair, a first switch connected between a gate of the second transistor and a drain of the fourth transistor, an amplifier with an input thereof connected to a drain of the second transistor and an output thereof connected to an output terminal, a second switch connected between a gate of the fourth transistor and a first input terminal, a third switch connected between the gate of the fourth transistor and a third input terminal, a fourth switch connected between a gate of the third transistor and a second input terminal, and a fifth switch connected between the gate of the third transistor and the output terminal. Switching control between a first state where the first, second and fourth switches are turned on and the third and fifth switches are turned off and a second state where the first and second fourth switches are turned off and the third and fifth switches are turned on is performed.

摘要翻译： 公开了一种多电平输出型的差分放大器，包括负载电路，负载电路包括二极管连接的第一晶体管，其源极连接到电源，第二晶体管的源极连接到电源并连接到栅极 第一晶体管通过电容器，差分对包括第三晶体管和第四晶体管，其源极分别连接到第一和第二晶体管的漏极，电流源分别连接到第一和第二晶体管的漏极，电流源用于向差分 连接在第二晶体管的栅极和第四晶体管的漏极之间的第一开关，放大器，其输入连接到第二晶体管的漏极，其输出连接到输出端子，第二开关连接在 第四晶体管的栅极和第一输入端子，连接在第四晶体管的栅极之间的第三开关 tor和第三输入端，连接在第三晶体管的栅极和第二输入端之间的第四开关，以及连接在第三晶体管的栅极和输出端之间的第五开关。 在第一，第二和第四开关导通的第一状态和第三和第五开关之间的开关控制被关断，而第一和第二第四开关被断开并且第三和第五开关导通的第二状态是 执行。

公开(公告)号：US20060244710A1

公开(公告)日：2006-11-02

申请号：US11411048

申请日：2006-04-26

申请人： Masao Iriguchi ,  Hiroshi Tsuchi

发明人： Masao Iriguchi ,  Hiroshi Tsuchi

IPC分类号： G09G3/36

CPC分类号： G09G3/3266 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2320/0252 ,  G09G2330/021

摘要： Disclosed is a display device including display unit, a column driver, a delay control circuit, an output switch control circuit, and a display controller. The display unit includes a plurality of pixel electrodes arranged at intersections between a plurality of data lines and a plurality of scan lines in a matrix form and TFTs. One of a drain and a source of each of the TFTs is connected to a corresponding one of the pixel electrodes. The other one of the drain and the source of each of the TFTs is connected to a corresponding one of the data lines, and a gate of each of the TFTs is connected to a corresponding one of the scan lines. The scan driver supplies a scan signal to each of the scan line in a preset scan cycle. The column driver includes D/A converter circuits for converting video data to gray scale signals, a plurality of buffer amplifiers for sequentially amplifying and outputting the gray scale signals in a preset output cycle, and an output switch circuit including a plurality of switches connected to output terminals of the buffer amplifiers and the data lines, respectively. The delay control circuit controls the scan driver so that the preset scan cycle is delayed from the preset output cycle just by a preset delay time. The output switch control circuit controls the output switch circuit to be kept off during the preset delay time. The display controller controls the video data, scan driver, column driver, delay control circuit, and output switch control circuit, respectively.

摘要翻译： 公开了一种显示装置，包括显示单元，列驱动器，延迟控制电路，输出开关控制电路和显示控制器。 显示单元包括布置在矩阵形式的多条数据线和多条扫描线与TFT之间的交叉处的多个像素电极。 每个TFT的漏极和源极之一连接到相应的一个像素电极。 每个TFT的漏极和源极中的另一个连接到对应的一条数据线，并且每个TFT的栅极连接到相应的一条扫描线。 扫描驱动器在预设的扫描周期中向扫描线提供扫描信号。 列驱动器包括用于将视频数据转换为灰度信号的D / A转换器电路，用于在预设输出周期中顺序放大并输出灰度信号的多个缓冲放大器，以及包括多个开关的输出开关电路， 缓冲放大器和数据线的输出端。 延迟控制电路控制扫描驱动器，使得预设的扫描周期从预设的输出周期延迟预设的延迟时间。 输出开关控制电路在预设的延迟时间内控制输出开关电路的关断。 显示控制器分别控制视频数据，扫描驱动器，列驱动器，延迟控制电路和输出开关控制电路。

公开(公告)号：US20060132344A1

公开(公告)日：2006-06-22

申请号：US11300387

申请日：2005-12-15

申请人： Junichirou Ishii ,  Hiroshi Tsuchi

发明人： Junichirou Ishii ,  Hiroshi Tsuchi

IPC分类号： H03M1/66

CPC分类号： H03M1/76

摘要： An output circuit, a digital/analog conversion circuit and a display apparatus can reduce the number of required input voltages and the number of transistors to save the necessary area. The output circuit and the digital/analog conversion circuit comprise a selection circuit for receiving as input a plurality of (m) reference voltages having mutually different respective voltage values, selecting two of the voltages according to a selection signal and outputting them and an amplifier circuit for receiving as input the voltages output from the selection circuit at two input terminals T1, T2 and outputting the voltage obtained by interpolating the voltage difference of the two input terminal voltages V(T1), V(T2) to a predetermined ratio. It may alternatively be so arranged that the selection circuit sequentially outputs the selected two voltages and the amplifier circuit sequentially receives as two input the two voltages and outputs the output voltage obtained by interpolation.

摘要翻译： 输出电路，数字/模拟转换电路和显示装置可以减少所需输入电压的数量和晶体管的数量以节省必要的面积。 输出电路和数字/模拟转换电路包括一个选择电路，用于接收具有相互不同的相应电压值的多个（m）个参考电压作为输入，根据选择信号选择两个电压并输出它们，以及一个放大器电路 用于从两个输入端子T 1，T 2处输入从选择电路输出的电压，并将通过将两个输入端子电压V（T 1），V（T 2）的电压差内插到预定的 比。 或者，可选地，选择电路顺序地输出所选择的两个电压，并且放大器电路依次接收两个电压作为两个输入，并输出通过插值获得的输出电压。

公开(公告)号：US20060132193A1

公开(公告)日：2006-06-22

申请号：US11304599

申请日：2005-12-16

申请人： Hiroshi Tsuchi

发明人： Hiroshi Tsuchi

IPC分类号： H03K5/22

CPC分类号： H03F3/45179 ,  H03F2203/45504 ,  H03F2203/45521 ,  H03F2203/45616

摘要： Disclosed is a differential amplifier which includes first and second input terminals, an output terminal, first and second differential pairs, and first and second current sources for supplying currents to the first and second differential pairs. The first differential pair has first and second inputs of an input pair connected to the first input terminal and the output terminal, respectively. The second differential pair has first and second inputs of an input pair connected to the second input terminal the output terminal, respectively. The differential amplifier further includes a load circuit connected to output pairs of the first and second differential pairs for outputting a signal obtained on combining outputs of the first and second differential pairs from at least one of a pair of connection nodes between the output pairs of the first and second differential pairs and the load circuit, an amplifier stage supplied with at least one signal at a connection node of the output pairs of the first and second differential pairs and the load circuit to output a voltage at the output terminal, and a current control circuit controlling the first and second current sources for controlling the ratio of currents supplied to the first and second differential pairs.

公开(公告)号：US20060028274A1

公开(公告)日：2006-02-09

申请号：US11197635

申请日：2005-08-04

申请人： Jun-ichirou Ishii ,  Hiroshi Tsuchi

发明人： Jun-ichirou Ishii ,  Hiroshi Tsuchi

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F3/72

摘要： Disclosed is a Rail-to-Rail amplifier including a plurality of differential pairs of a first conductivity type and a plurality of differential amplifiers of a second conductivity type each with one of an input pair thereof constituting an input terminal, a differential amplifier that outputs an output voltage according to the range of provided supply voltage, a determination unit for determining whether to stop operations of the differential pairs of the first conductivity type or the second conductivity type according to a predetermined input signal, and a differential pair control unit for stopping the operations of the differential pairs of the first conductivity type or the second conductivity type according to the output signal of the determination unit.

摘要翻译： 公开了一种轨至轨放大器，其包括多个第一导电类型的差分对和多个第二导电类型的差分放大器，每个差分放大器的输入对之一构成输入端，差分放大器输出 根据提供的电源电压的范围的输出电压;确定单元，用于根据预定输入信号确定是否停止第一导电类型或第二导电类型的差分对的操作;以及差分对控制单元，用于停止 根据确定单元的输出信号对第一导电类型或第二导电类型的差分对进行操作。

公开(公告)号：US20050212791A1

公开(公告)日：2005-09-29

申请号：US11093245

申请日：2005-03-29

申请人： Hiroshi Tsuchi

发明人： Hiroshi Tsuchi

IPC分类号： H03M1/78 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  H03F3/34 ,  H03F3/345 ,  H03F3/45 ,  H03M1/66

CPC分类号： G09G3/3685 ,  G09G2310/027 ,  G09G2310/0291 ,  H03M1/0682 ,  H03M1/765

摘要： A differential amplifier includes a first differential pair, a second differential pair, a load circuit, connected in common to the first and second differential pairs, and first and second current sources for supplying the current to the first and second differential pairs, and amplifies a signal responsive to a common output signal of the first and second differential pairs. One of differential inputs of the first differential pair is connected to a reference voltage. A data output period includes a first period and a second period. During the first period, voltages of first and second input terminals are input through first and fourth switches in the on-state to differential inputs of the second differential pair. The other of the differential inputs of the first differential pair is connected through a third switch in the on-state to an output terminal. An output voltage is stored in a capacitor C connected to the other differential input of the first differential pair. The first, third and fourth switches are turned off during the second period. One of the differential inputs of the second differential pair is connected through a second switch to the output terminal. The other differential input of the second differential pair is connected through a fifth switch to a third input terminal.

摘要翻译： 差分放大器包括第一差分对，第二差分对，负载电路，共同连接到第一和第二差分对，以及第一和第二电流源，用于将电流提供给第一和第二差分对，并且放大一个 响应于第一和第二差分对的公共输出信号的信号。 第一差分对的差分输入之一连接到参考电压。 数据输出周期包括第一周期和第二周期。 在第一时段期间，第一和第二输入端的电压通过导通状态的第一和第四开关输入到第二差分对的差分输入。 第一差分对的另一个差分输入通过导通状态的第三开关连接到输出端。 输出电压存储在连接到第一差分对的另一个差分输入的电容器C中。 在第二时段期间，第一，第三和第四开关被关断。 第二差分对的差分输入之一通过第二开关连接到输出端。 第二差分对的另一差分输入通过第五开关连接到第三输入端。

公开(公告)号：US20050088329A1

公开(公告)日：2005-04-28

申请号：US10970706

申请日：2004-10-21

申请人： Hiroshi Tsuchi

发明人： Hiroshi Tsuchi

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/26 ,  G09G3/36 ,  H03F1/00 ,  H03F3/45 ,  H03K19/00 ,  H03M1/00 ,  H03M1/66 ,  H03M1/76

CPC分类号： G09G3/3696 ,  G09G3/3688 ,  G09G2310/027 ,  H03M1/765

摘要： A selection circuit receives a plural number (m) of respective different values of voltages as reference voltages to select and output two voltages. An amplifier receives at two input terminals the two reference voltages output from the selection circuit to output an output voltage extrapolated from the two input terminal voltages.

摘要翻译： 选择电路接收多个（m）个不同的电压值作为参考电压，以选择和输出两个电压。 放大器在两个输入端接收从选择电路输出的两个参考电压，以输出从两个输入端电压外推的输出电压。

公开(公告)号：US06816144B2

公开(公告)日：2004-11-09

申请号：US09986937

申请日：2001-11-13

申请人： Hiroshi Tsuchi

发明人： Hiroshi Tsuchi

IPC分类号： G09G336

CPC分类号： G09G3/3688 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3614 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/027

摘要： A data line drive circuit for a liquid crystal display comprises a selection circuit 20 receiving from a D/A converter 16 a plurality of voltages V1 to V3 corresponding to data lines 301 to 303 of the liquid crystal display, for outputting a selected one of the received voltages, an analog buffer 22A connected to an output of the selection circuit, a distribution circuit 24 receiving an output of the analog buffer for selectively distributing the output of the analog buffer to a selected one of the data lines, and a precharge circuit 26 for precharging each of the data lines to either VDD or VSS in accordance with at least the most significant bit of the corresponding digital data, during a precharge period at the beginning of each scan line selection period. During a first writing period succeeding to the precharge period, a voltage V1 corresponding to the data line 301 is supplied to the analog buffer 22A, and the output of the analog buffer is supplied to the data line 301. During a succeeding and second writing period, a voltage V2 corresponding to the data line 302 is supplied to the analog buffer 22A, and the output of the analog buffer is supplied to the data line 302.