公开(公告)号：US08593222B2

公开(公告)日：2013-11-26

申请号：US13312146

申请日：2011-12-06

申请人： Ju-Lin Huang ,  Keko-Chun Liang ,  Po-Yu Tseng

发明人： Ju-Lin Huang ,  Keko-Chun Liang ,  Po-Yu Tseng

IPC分类号： H03F3/45

CPC分类号： H03F3/4521 ,  H03F2200/411

摘要： An amplifier includes an output stage circuit, a current source, a PMOS input pair, an NMOS input pair and a current transferring circuit. The output stage circuit is electrically coupled to a supply voltage and a ground voltage. The current source has a node to provide a current. The PMOS input pair is coupled to the node and the ground voltage and controlled by an input voltage. The NMOS input pair coupled to the supply voltage is controlled by the input voltage. The current transferring circuit is coupled to the node and the NMOS input pair. When the input voltage is less than a specific value, the current flows into the PMOS input pair through the node. When the input voltage is larger than or equal to the specific value, the current flows into the NMOS input pair through the node and the current transferring circuit.

摘要翻译： 放大器包括输出级电路，电流源，PMOS输入对，NMOS输入对和电流传输电路。 输出级电路电耦合到电源电压和接地电压。 当前源有一个节点提供电流。 PMOS输入对耦合到节点和接地电压并由输入电压控制。 耦合到电源电压的NMOS输入对由输入电压来控制。 电流传输电路耦合到节点和NMOS输入对。 当输入电压小于特定值时，电流通过该节点流入PMOS输入对。 当输入电压大于或等于特定值时，电流通过节点和电流传输电路流入NMOS输入对。

公开(公告)号：US20130002353A1

公开(公告)日：2013-01-03

申请号：US13275319

申请日：2011-10-18

申请人： Ju-Lin Huang ,  Chun-Yung Cho ,  Yu-Shao Liu

发明人： Ju-Lin Huang ,  Chun-Yung Cho ,  Yu-Shao Liu

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/0277 ,  H03F3/211

摘要： An output error compensation method adapted to a multi-input operational amplifier is disclosed. The output error compensation method includes following steps. A plurality of original transconductances of a plurality of differential pairs is obtained regarding a specific combination of input voltages received by the differential pairs. Transconductance differences of a plurality of adjustable differential pairs among the differential pairs are obtained according to the original transconductances. Adjusted transconductance of the adjustable differential pairs are obtained according to the original transconductances and the transconductance differences. Transconductances of the adjustable differential pairs are respectively adjusted according to the adjusted transconductances, so that an output voltage can match an expected value when each of a plurality of combinations of the input voltages is received.

摘要翻译： 公开了一种适用于多输入运算放大器的输出误差补偿方法。 输出误差补偿方法包括以下步骤。 关于由差分对接收的输入电压的特定组合，获得多个差分对的多个原始跨导。 根据原始跨导获得差分对之间的多个可调差分对的跨导差异。 根据原始跨导和跨导差异，可调节差分对的跨导。 可调节差分对的跨导根据调节的跨导分别调整，使得当输入电压的多个组合中的每一个被接收时，输出电压可以匹配期望值。

公开(公告)号：US08054134B2

公开(公告)日：2011-11-08

申请号：US12759714

申请日：2010-04-14

申请人： Ju-Lin Huang ,  Chia-Wei Su ,  Po-Yu Tseng

发明人： Ju-Lin Huang ,  Chia-Wei Su ,  Po-Yu Tseng

IPC分类号： H03F1/14

CPC分类号： H03F3/45

摘要： A coupling isolation method for preventing a load signal from coupling into an operational amplifier is disclosed. The coupling isolation method includes generating a system signal before the operational amplifier outputs a computation result, switching off a Miller compensation signal path of the operational amplifier at a first time point according to the system signal, and electrically connecting an output end of the operational amplifier and a load at a second time point according to the system signal to output the computation result.

摘要翻译： 公开了一种用于防止负载信号耦合到运算放大器中的耦合隔离方法。 耦合隔离方法包括在运算放大器输出计算结果之前产生系统信号，根据系统信号在第一时间点关闭运算放大器的米勒补偿信号路径，并将运算放大器的输出端电连接 并根据系统信号在第二时间点进行负载以输出计算结果。

公开(公告)号：US20110102081A1

公开(公告)日：2011-05-05

申请号：US12687892

申请日：2010-01-15

申请人： Chia-Wei Su ,  Ju-Lin Huang ,  Keko-Chun Liang

发明人： Chia-Wei Su ,  Ju-Lin Huang ,  Keko-Chun Liang

IPC分类号： H03F3/45

CPC分类号： H03F3/211 ,  H03F1/52 ,  H03F1/523 ,  H03F3/265 ,  H03F3/303 ,  H03F3/45 ,  H03F3/45071 ,  H03F3/45475 ,  H03F2200/444 ,  H03F2203/21178 ,  H03F2203/45218

摘要： An amplifier circuit with overshoot suppress scheme including an input amplifier, an output amplifier, and a diode is provided. A first and a second input ends of the output amplifier are coupled to a differential output pair of the input amplifier. A first end of the diode is coupled to an output end of the output amplifier. A second end of the diode is coupled to the first input end of the output amplifier. When the voltage difference between the output and the input ends of the output amplifier is greater then the barrier voltage of the diode, the diode is turned on, so that the output end of the output amplifier is coupled to the input end of the output amplifier. In the transient state, it rapidly smoothes the overshoot signal. In the steady state, the diode is cut off to maintain the normal operation of the operational amplifier.

摘要翻译： 提供了具有输入放大器，输出放大器和二极管的具有过冲抑制方案的放大器电路。 输出放大器的第一和第二输入端耦合到输入放大器的差分输出对。 二极管的第一端耦合到输出放大器的输出端。 二极管的第二端耦合到输出放大器的第一输入端。 当输出放大器的输出端和输入端之间的电压差大于二极管的势垒电压时，二极管导通，使得输出放大器的输出端耦合到输出放大器的输入端 。 在瞬态状态下，它会快速平滑过冲信号。 在稳定状态下，二极管被切断以保持运算放大器的正常工作。

公开(公告)号：US20110069053A1

公开(公告)日：2011-03-24

申请号：US12690087

申请日：2010-01-19

申请人： Ju-Lin Huang

发明人： Ju-Lin Huang

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0673

摘要： A driving circuit of a liquid crystal display including a first input port, a second input port, a first gamma buffer, a second gamma buffer, and a switching circuit is provided. A plurality of first gamma voltages are inputted from the first input port, and a plurality of second gamma voltages are inputted from the second input port. The switching circuit switches the connections between the two input ports and the two gamma buffers, such that a first line of pixels of the liquid crystal display receives the gamma voltages from the first gamma buffer within a first frame period and a second frame period, and that a second line of pixels of the liquid crystal display receives the gamma voltages from the second gamma buffer within the first frame period and the second frame period.

摘要翻译： 提供了包括第一输入端口，第二输入端口，第一伽马缓冲器，第二伽马缓冲器和开关电路的液晶显示器的驱动电路。 从第一输入端口输入多个第一伽马电压，并且从第二输入端口输入多个第二伽玛电压。 开关电路切换两个输入端口和两个伽马缓冲器之间的连接，使得液晶显示器的第一行像素在第一帧周期和第二帧周期内从第一伽马缓冲器接收伽马电压，以及 液晶显示器的第二行像素在第一帧周期和第二帧周期内从第二伽马缓冲器接收伽马电压。

公开(公告)号：US20090206930A1

公开(公告)日：2009-08-20

申请号：US12121753

申请日：2008-05-15

申请人： Ju-Lin Huang

发明人： Ju-Lin Huang

IPC分类号： H03F3/45 ,  G06F3/14

CPC分类号： H03F3/45183 ,  H03M1/661

摘要： An amplifier circuit with a voltage interpolation function includes an N-type differential pair and a P-type differential pair. The N-type differential pair includes a first transconductance value, and has a first differential input terminal coupled to a first voltage and a second differential input terminal coupled to a voltage output terminal. The P-type differential pair includes a second transconductance value, and has a first differential input terminal coupled to a second voltage and a second differential input terminal coupled to the voltage output terminal. The N-type differential pair and the P-type differential pair are further coupled to the voltage output terminal through an output stage, and voltages outputted by the voltage output terminal are interpolation results of the first voltage and the second voltage weighted by the first transconductance value and the second transconductance value.

摘要翻译： 具有电压内插功能的放大器电路包括N型差分对和P型差动对。 N型差分对包括第一跨导值，并且具有耦合到第一电压的第一差分输入端和耦合到电压输出端的第二差分输入端。 P型差分对包括第二跨导值，并且具有耦合到第二电压的第一差分输入端和耦合到电压输出端的第二差分输入端。 N型差分对和P型差分对进一步通过输出级耦合到电压输出端，并且由电压输出端输出的电压是由第一跨导加权的第一电压和第二电压的插值结果 值和第二跨导值。

公开(公告)号：US20080272839A1

公开(公告)日：2008-11-06

申请号：US11831975

申请日：2007-08-01

申请人： Ju-Lin Huang

发明人： Ju-Lin Huang

IPC分类号： G06G7/12

CPC分类号： H03F3/45179 ,  H03F1/0205 ,  H03F3/45475 ,  H03F2203/45248 ,  H03F2203/45511 ,  H03F2203/45541 ,  H03F2203/45566

摘要： An operation amplifier (op-amp) and a circuit for providing dynamic current thereof are disclosed. The circuit can be applied to any current op-amp. The circuit comprises two transistors which are simultaneously or non-simultaneously turned on as the input signals respectively received by the first input and the second input of the op-amp get a transition, namely, as the op-amp is in the transient state, so as to increase the bias current at the first input terminal or/and the second input terminal of the op-amp by a dynamic current. Therefore, not only the internal slew rate of the op-amp can be accelerated by the circuit of the present invention, but also the power consumption of the op-amp can not be increased by the circuit of the present invention as the op-amp in the steady state.

摘要翻译： 公开了一种运算放大器（op-amp）和用于提供动态电流的电路。 该电路可以应用于任何当前的运算放大器。 该电路包括同时或不同时接通的两个晶体管，因为分别由第一输入端接收的输入信号和运算放大器的第二输入端获得转换，即当运算放大器处于暂态状态时， 以便通过动态电流来增加运算放大器的第一输入端子或/和第二输入端子处的偏置电流。 因此，不仅可以通过本发明的电路来加速运算放大器的内部转换速率，而且通过作为运算放大器的本发明的电路也不能增加运算放大器的功耗 处于稳定状态。

公开(公告)号：US08536946B2

公开(公告)日：2013-09-17

申请号：US13275319

申请日：2011-10-18

申请人： Ju-Lin Huang ,  Chun-Yung Cho ,  Yu-Shao Liu

发明人： Ju-Lin Huang ,  Chun-Yung Cho ,  Yu-Shao Liu

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/0277 ,  H03F3/211

摘要： An output error compensation method adapted to a multi-input operational amplifier is disclosed. The output error compensation method includes following steps. A plurality of original transconductances of a plurality of differential pairs is obtained regarding a specific combination of input voltages received by the differential pairs. Transconductance differences of a plurality of adjustable differential pairs among the differential pairs are obtained according to the original transconductances. Adjusted transconductance of the adjustable differential pairs are obtained according to the original transconductances and the transconductance differences. Transconductances of the adjustable differential pairs are respectively adjusted according to the adjusted transconductances, so that an output voltage can match an expected value when each of a plurality of combinations of the input voltages is received.

摘要翻译： 公开了一种适用于多输入运算放大器的输出误差补偿方法。 输出误差补偿方法包括以下步骤。 关于由差分对接收的输入电压的特定组合，获得多个差分对的多个原始跨导。 根据原始跨导获得差分对之间的多个可调差分对的跨导差异。 根据原始跨导和跨导差异，可调节差分对的跨导。 可调节差分对的跨导根据调节的跨导分别调整，使得当输入电压的多个组合中的每一个被接收时，输出电压可以匹配期望值。

公开(公告)号：US20120194575A1

公开(公告)日：2012-08-02

申请号：US13442882

申请日：2012-04-10

申请人： Chih-Jen Yen ,  Yueh-Hsiu Liu ,  Ju-Lin Huang ,  Peng-Yu Chen ,  Yu-Shao Liu

发明人： Chih-Jen Yen ,  Yueh-Hsiu Liu ,  Ju-Lin Huang ,  Peng-Yu Chen ,  Yu-Shao Liu

IPC分类号： G09G5/10

CPC分类号： G09G3/3696 ,  G09G3/3614 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0673

摘要： A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.

摘要翻译： 提供伽马电压发生器以产生多个第一伽马电压和第二伽马电压。 在第一帧周期内由伽马电压发生器的DAC产生的第一伽马电压中的至少一个和由第二帧周期内的DAC产生的第二伽马电压中的至少一个从相同的一个伽马缓冲器输出 的γ电压发生器，由此所传输的伽马电压具有基本相等的偏移。 因此，显示质量接近理想状态。

公开(公告)号：US08174481B2

公开(公告)日：2012-05-08

申请号：US12690087

申请日：2010-01-19

申请人： Ju-Lin Huang

发明人： Ju-Lin Huang

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2320/0673

摘要： A driving circuit of a liquid crystal display including a first input port, a second input port, a first gamma buffer, a second gamma buffer, and a switching circuit is provided. A plurality of first gamma voltages are inputted from the first input port, and a plurality of second gamma voltages are inputted from the second input port. The switching circuit switches the connections between the two input ports and the two gamma buffers, such that a first line of pixels of the liquid crystal display receives the gamma voltages from the first gamma buffer within a first frame period and a second frame period, and that a second line of pixels of the liquid crystal display receives the gamma voltages from the second gamma buffer within the first frame period and the second frame period.

摘要翻译： 提供了包括第一输入端口，第二输入端口，第一伽马缓冲器，第二伽马缓冲器和开关电路的液晶显示器的驱动电路。 从第一输入端口输入多个第一伽马电压，并且从第二输入端口输入多个第二伽玛电压。 开关电路切换两个输入端口和两个伽马缓冲器之间的连接，使得液晶显示器的第一行像素在第一帧周期和第二帧周期内从第一伽马缓冲器接收伽马电压，以及 液晶显示器的第二行像素在第一帧周期和第二帧周期内从第二伽马缓冲器接收伽马电压。