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    • 4. 发明申请
    • Output driving circuits of output buffers for source driver integrated circuits
    • 用于源极驱动器集成电路的输出缓冲器的输出驱动电路
    • US20100134471A1
    • 2010-06-03
    • US12591482
    • 2009-11-20
    • Ki-Won SeoJae-Wook KwonDo-Yun KimSung-Pil Choi
    • Ki-Won SeoJae-Wook KwonDo-Yun KimSung-Pil Choi
    • G09G5/00
    • G09G3/3688G09G3/3614G09G2320/02
    • An output driving circuit is provided that may reduce power consumption by decreasing static current leakage in a liquid crystal display device. The output driving circuit of an output buffer of a source driver integrated circuit may include: an output driving unit including a pull-up transistor and a pull-down transistor coupled to a source line driving signal output terminal; and a sub output driving unit configured to perform an output driving operation together with the output driving unit during a normal operation period of an active horizontal synchronization signal and configured to be disabled during a period in which the horizontal synchronization signal is inactive in response to a control signal, in order to reduce static current leakage flowing through the output driving circuit. Current leakage is reduced in the inactive period of a horizontal synchronization signal in an output driving circuit, thereby reducing power consumption of a liquid crystal display device.
    • 提供一种输出驱动电路,其可以通过降低液晶显示装置中的静电流泄漏来降低功耗。 源极驱动器集成电路的输出缓冲器的输出驱动电路可以包括:输出驱动单元,包括耦合到源极线驱动信号输出端的上拉晶体管和下拉晶体管; 以及副输出驱​​动单元,被配置为在活动水平同步信号的正常操作期间内与所述输出驱动单元一起执行输出驱动操作,并且被配置为在所述水平同步信号响应于所述水平同步信号无效的时段期间被禁用 控制信号,以减少流过输出驱动电路的静电流泄漏。 在输出驱动电路中的水平同步信号的无效期间,电流泄漏减少,从而降低了液晶显示装置的功耗。
    • 5. 发明授权
    • Operational amplifier for output buffer and signal processing circuit using the same
    • 输出缓冲器和信号处理电路的运算放大器使用相同
    • US07282990B2
    • 2007-10-16
    • US11375952
    • 2006-03-15
    • Sung-Pil ChoiDo-Youn KimJae-Wook Kwon
    • Sung-Pil ChoiDo-Youn KimJae-Wook Kwon
    • G06G7/12
    • H03K5/2481H03F3/45183H03F2203/45674
    • An operational amplifier includes: a differential amplifier for differentially amplifying first and second differential input signals to generate first and second output signals through first and second nodes; a driver for driving an output node in response to the second output signal; and a drive current adjuster for adjusting a driving current of the driver in response to the first output signal. The drive current adjuster includes: a first transistor including a drain connected to the output node, a gate, and a source connected to a ground voltage; a second transistor including a gate connected to the first node, a drain, and a source connected to a source voltage; a third transistor including a drain connected to the drain of the second transistor, a source, and a gate connected to a first bias voltage; and a fourth transistor including a drain connected to the source of the third transistor, a source connected to the ground voltage, and a gate connected to a second bias voltage, wherein the gate of the first transistor is commonly connected to the drains of the second and third transistors.
    • 运算放大器包括:差分放大器,用于差分放大第一和第二差分输入信号,以通过第一和第二节点产生第一和第二输出信号; 用于响应于所述第二输出信号驱动输出节点的驱动器; 以及驱动电流调节器,用于响应于第一输出信号调整驱动器的驱动电流。 驱动电流调节器包括:第一晶体管,包括连接到输出节点的漏极,栅极和连接到接地电压的源极; 第二晶体管,包括连接到第一节点的栅极,漏极和连接到源极电压的源极; 第三晶体管,包括连接到第二晶体管的漏极的漏极,源极和连接到第一偏置电压的栅极; 以及第四晶体管,包括连接到第三晶体管的源极的漏极,连接到接地电压的源极和连接到第二偏置电压的栅极,其中第一晶体管的栅极共同连接到第二晶体管的漏极 和第三晶体管。
    • 6. 发明申请
    • Operational amplifier for output buffer and signal processing circuit using the same
    • 输出缓冲器和信号处理电路的运算放大器使用相同
    • US20060238238A1
    • 2006-10-26
    • US11375952
    • 2006-03-15
    • Sung-Pil ChoiDo-Youn KimJae-Wook Kwon
    • Sung-Pil ChoiDo-Youn KimJae-Wook Kwon
    • H03K5/22G06G7/12
    • H03K5/2481H03F3/45183H03F2203/45674
    • An operational amplifier includes: a differential amplifier for differentially amplifying first and second differential input signals to generate first and second output signals through first and second nodes; a driver for driving an output node in response to the second output signal; and a drive current adjuster for adjusting a driving current of the driver in response to the first output signal. The drive current adjuster includes: a first transistor including a drain connected to the output node, a gate, and a source connected to a ground voltage; a second transistor including a gate connected to the first node, a drain, and a source connected to a source voltage; a third transistor including a drain connected to the drain of the second transistor, a source, and a gate connected to a first bias voltage; and a fourth transistor including a drain connected to the source of the third transistor, a source connected to the ground voltage, and a gate connected to a second bias voltage, wherein the gate of the first transistor is commonly connected to the drains of the second and third transistors.
    • 运算放大器包括:差分放大器,用于差分放大第一和第二差分输入信号,以通过第一和第二节点产生第一和第二输出信号; 用于响应于所述第二输出信号驱动输出节点的驱动器; 以及驱动电流调节器,用于响应于第一输出信号调整驱动器的驱动电流。 驱动电流调节器包括:第一晶体管,包括连接到输出节点的漏极,栅极和连接到接地电压的源极; 第二晶体管,包括连接到第一节点的栅极,漏极和连接到源极电压的源极; 第三晶体管,包括连接到第二晶体管的漏极的漏极,源极和连接到第一偏置电压的栅极; 以及第四晶体管,包括连接到第三晶体管的源极的漏极,连接到接地电压的源极和连接到第二偏置电压的栅极,其中第一晶体管的栅极共同连接到第二晶体管的漏极 和第三晶体管。
    • 7. 发明授权
    • Devices and methods of transmitting data, source drivers using the same, and liquid crystal display (LCD) devices having the same
    • 发送数据的装置和方法,使用其的源驱动器以及具有该数据的液晶显示器(LCD)装置
    • US07733838B2
    • 2010-06-08
    • US11743417
    • 2007-05-02
    • Jae-Wook KwonSung-Pil Choi
    • Jae-Wook KwonSung-Pil Choi
    • H04B7/216
    • G09G3/3674G09G2330/021G09G2330/06
    • A data transmission device for reducing power consumption includes a data source configured to provide data, a data transmission line having a plurality of data transmission sections, and data storage units respectively coupled to the data transmission sections. The respective data storage units determine whether the data storage units store the provided data, and store the provided data based on the determination result. The provided data is sequentially stored into the data storage units, from one end of the data storage units to the other end of the data storage units. A data transmission controller is configured to control the data transmission sections and to transmit the provided data to one of the data storage units. Therefore, the data transmission device may reduce electromagnetic interference (EMI) that is proportional to the current in the source driver.
    • 用于降低功耗的数据传输装置包括被配置为提供数据的数据源,具有多个数据传输部分的数据传输线以及分别耦合到数据传输部分的数据存储单元。 相应的数据存储单元确定数据存储单元是否存储提供的数据,并且基于确定结果来存储所提供的数据。 所提供的数据被顺序地存储到数据存储单元中,从数据存储单元的一端到数据存储单元的另一端。 数据传输控制器被配置为控制数据传输部分并将提供的数据发送到数据存储单元之一。 因此,数据传输设备可以减少与源驱动器中的电流成比例的电磁干扰(EMI)。