公开(公告)号：US20050259058A1

公开(公告)日：2005-11-24

申请号：US11128372

申请日：2005-05-13

申请人： satoshi Yamaguchi ,  Masuhiro Endo ,  Takehiko Kubo

发明人： satoshi Yamaguchi ,  Masuhiro Endo ,  Takehiko Kubo

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3688 ,  G09G2310/027 ,  G09G2310/0297

摘要： The present invention is directed to reduce the size of a liquid crystal driver (semiconductor integrated circuit for driving liquid crystal) having therein a D/A converting circuit, converting digital image data to analog gradation voltage, and outputting a voltage to be applied to a signal line (source line) of a color liquid crystal panel. Output amplifiers of the final stage for outputting an image signal converted to gradation voltage are divided into a plurality of groups. D/A converting circuits for converting image data to gradation voltage are provided as circuits common to the groups. While switching the group, the D/A converting circuit is operated in a time sharing manner. The output amplifiers in the final stage related to image signals of the same color are selected and grouped. A selector function is provided between the D/A converting circuit and the output amplifier, and an image signal converted to gradation voltage by the D/A converting circuit is supplied to a desired hold circuit.

摘要翻译： 本发明旨在减小其中具有D / A转换电路的液晶驱动器（驱动液晶的半导体集成电路）的尺寸，将数字图像数据转换为模拟灰度电压，并输出施加到 彩色液晶面板的信号线（源极线）。 用于输出转换为灰度电压的图像信号的最终级的输出放大器被分成多个组。 提供将图像数据转换为灰度电压的D / A转换电路作为组共用的电路。 在切换组时，D / A转换电路以分时方式工作。 与相同颜色的图像信号相关的最后阶段的输出放大器被选择并分组。 在D / A转换电路和输出放大器之间提供选择器功能，并且由D / A转换电路转换成灰度电压的图像信号被提供给期望的保持电路。

公开(公告)号：US20090219240A1

公开(公告)日：2009-09-03

申请号：US12463910

申请日：2009-05-11

申请人： Satoshi Yamaguchi ,  Masuhiro Endo ,  Takehiko Kubo

发明人： Satoshi Yamaguchi ,  Masuhiro Endo ,  Takehiko Kubo

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G2310/027 ,  G09G2310/0297

摘要： The present invention is directed to reduce the size of a liquid crystal driver (semiconductor integrated circuit for driving liquid crystal) having therein a D/A converting circuit, converting digital image data to analog gradation voltage, and outputting a voltage to be applied to a signal line (source line) of a color liquid crystal panel. Output amplifiers of the final stage for outputting an image signal converted to gradation voltage are divided into a plurality of groups. D/A converting circuits for converting image data to gradation voltage are provided as circuits common to the groups. While switching the group, the D/A converting circuit is operated in a time sharing manner. The output amplifiers in the final stage related to image signals of the same color are selected and grouped. A selector function is provided between the D/A converting circuit and the output amplifier, and an image signal converted to gradation voltage by the D/A converting circuit is supplied to a desired hold circuit.

摘要翻译： 本发明旨在减小其中具有D / A转换电路的液晶驱动器（驱动液晶的半导体集成电路）的尺寸，将数字图像数据转换为模拟灰度电压，并输出施加到 彩色液晶面板的信号线（源极线）。 用于输出转换为灰度电压的图像信号的最终级的输出放大器被分成多个组。 提供将图像数据转换为灰度电压的D / A转换电路作为组共用的电路。 在切换组时，D / A转换电路以分时方式工作。 与相同颜色的图像信号相关的最后阶段的输出放大器被选择并分组。 在D / A转换电路和输出放大器之间提供选择器功能，并且由D / A转换电路转换成灰度电压的图像信号被提供给期望的保持电路。

公开(公告)号：US08094104B2

公开(公告)日：2012-01-10

申请号：US11833704

申请日：2007-08-03

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.

摘要翻译： 一种具有差分型输入电路的液晶驱动装置，该差分型输入电路包括用于接收差分信号的差分放大级和用于基于差分放大级的输出产生输出信号的缓冲级，用于接收的液晶驱动装置 经由输入电路的显示数据的信号，并且基于显示数据输出用于驱动液晶面板的信号，其中液晶驱动电压VLCD大于用于提供给操作电压的逻辑的电源电压VCC 缓冲级提供给输入电路的差分放大级。 提供在不接收显示数据的期间中断差分放大级的工作电流的待机功能。

公开(公告)号：US07405732B2

公开(公告)日：2008-07-29

申请号：US10433666

申请日：2001-10-25

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G5/00

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.

摘要翻译： 一种具有差分型输入电路的液晶驱动装置，该差分型输入电路包括用于接收差分信号的差分放大级和用于基于差分放大级的输出产生输出信号的缓冲级，用于接收的液晶驱动装置 经由输入电路的显示数据的信号，并且基于显示数据输出用于驱动液晶面板的信号，其中液晶驱动电压VLCD大于用于提供给操作电压的逻辑的电源电压VCC 缓冲级提供给输入电路的差分放大级。 提供在不接收显示数据的期间中断差分放大级的工作电流的待机功能。

公开(公告)号：US20070279358A1

公开(公告)日：2007-12-06

申请号：US11833704

申请日：2007-08-03

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.

摘要翻译： 一种具有差分型输入电路的液晶驱动装置，该差分型输入电路包括用于接收差分信号的差分放大级和用于基于差分放大级的输出产生输出信号的缓冲级，用于接收的液晶驱动装置 经由输入电路的显示数据的信号，并且基于显示数据输出用于驱动液晶面板的信号，其中液晶驱动电压VLCD大于用于提供给操作电压的逻辑的电源电压VCC 缓冲级提供给输入电路的差分放大级。 提供在不接收显示数据的期间中断差分放大级的工作电流的待机功能。

公开(公告)号：US20050146493A1

公开(公告)日：2005-07-07

申请号：US10433666

申请日：2001-10-25

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.

摘要翻译： 一种具有差分型输入电路的液晶驱动装置，该差分型输入电路包括用于接收差分信号的差分放大级和用于基于差分放大级的输出产生输出信号的缓冲级，用于接收的液晶驱动装置 经由输入电路的显示数据的信号，并且基于显示数据输出用于驱动液晶面板的信号，其中液晶驱动电压VLCD大于用于提供给操作电压的逻辑的电源电压VCC 缓冲级提供给输入电路的差分放大级。 提供在不接收显示数据的期间中断差分放大级的工作电流的待机功能。

公开(公告)号：US20070279404A1

公开(公告)日：2007-12-06

申请号：US11833728

申请日：2007-08-03

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G5/00

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.

公开(公告)号：US20070279357A1

公开(公告)日：2007-12-06

申请号：US11833519

申请日：2007-08-03

申请人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

发明人： Arata Kinjo ,  Kazuo Ookado ,  Kouichi Kotera ,  Hitoshi Oda ,  Masuhiro Endo

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/06 ,  G09G2360/02 ,  G09G2370/08

摘要： A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.