公开(公告)号：US20180005554A1

公开(公告)日：2018-01-04

申请号：US15706776

申请日：2017-09-18

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Wei-Hsiang Hung

IPC: G09G3/00 ,  H04N5/14 ,  H02J4/00

CPC classification number: G09G3/00 ,  G09G2320/0276 ,  G09G2320/0626 ,  H02J4/00 ,  H04N5/148 ,  Y10T307/461

Abstract: An operational amplifier applicable to a display device is provided. The operational amplifier having multiple output stages. The operational amplifier includes an input stage, an output stage selection module and a plurality of output stages. The output stage selection module is coupled to the input stage. Each of the output stages is coupled to the output stage selection module and is coupleable to drive a corresponding one of a plurality of loads. The output stage selection module is configured to selectively couple or discouple each of the output stages respectively to the input stage according to a plurality of selection signal. Furthermore, a load driving apparatus and a grayscale voltage generating circuit are also provided.

公开(公告)号：US20140320474A1

公开(公告)日：2014-10-30

申请号：US13964121

申请日：2013-08-12

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chia-Hsun Kuo ,  Chia-Wei Su ,  Ji-Ting Chen ,  Shun-Hsun Yang ,  Wei-Hsiang Hung ,  Ying-Zu Lin ,  Li-Tang Lin

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021 ,  G09G2330/023

Abstract: A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level.

Abstract translation: 一种显示驱动器，包括：第一预定电压电平提供装置，用于提供包括至少一个第一预定电压电平的第一预定电压电平组; 第一图像数据提供装置，用于输出第一图像数据; 以及检测控制电路，用于根据第一图像数据的电压电平的绝对值和绝对值之间的关系来确定第一图像数据提供装置的输出端是否被预充电到第一预定电压电平 的第一预定电压电平。

公开(公告)号：US20130328631A1

公开(公告)日：2013-12-12

申请号：US13970618

申请日：2013-08-20

Applicant: NOVATEK Microelectronics Corp.

Inventor： Xie-Ren Hsu ,  Chia-Hung Lin ,  Wei-Hsiang Hung

IPC: H03F3/45

CPC classification number: H03F3/45076 ,  H03F1/0261 ,  H03F3/45632 ,  H03F2203/45244 ,  H03F2203/45248

Abstract: An adaptive amplification circuit is provided, which includes an operational amplifier comprising a variable bias current source for providing a variable bias current for the operational amplifier, an equivalent circuit of the operational amplifier for receiving an input voltage and generating an output voltage according to the input voltage, and a bias control unit for generating a bias control signal to the variable bias current source according to the output voltage so as to adjust the variable bias current.

Abstract translation: 提供一种自适应放大电路，其包括运算放大器，其包括用于为运算放大器提供可变偏置电流的可变偏置电流源，用于接收输入电压并根据输入产生输出电压的运算放大器的等效电路 电压和偏置控制单元，用于根据输出电压向可变偏置电流源产生偏置控制信号，以便调整可变偏置电流。

公开(公告)号：US09118287B2

公开(公告)日：2015-08-25

申请号：US13970618

申请日：2013-08-20

Applicant: NOVATEK Microelectronics Corp.

Inventor： Xie-Ren Hsu ,  Chia-Hung Lin ,  Wei-Hsiang Hung

IPC: H03F3/45 ,  H03F1/02

CPC classification number: H03F3/45076 ,  H03F1/0261 ,  H03F3/45632 ,  H03F2203/45244 ,  H03F2203/45248

Abstract: An adaptive amplification circuit is provided, which includes an operational amplifier comprising a variable bias current source for providing a variable bias current for the operational amplifier, an equivalent circuit of the operational amplifier for receiving an input voltage and generating an output voltage according to the input voltage, and a bias control unit for generating a bias control signal to the variable bias current source according to the output voltage so as to adjust the variable bias current.

Abstract translation: 提供一种自适应放大电路，其包括运算放大器，其包括用于为运算放大器提供可变偏置电流的可变偏置电流源，用于接收输入电压并根据输入产生输出电压的运算放大器的等效电路 电压和偏置控制单元，用于根据输出电压向可变偏置电流源产生偏置控制信号，以便调整可变偏置电流。

公开(公告)号：US09792843B2

公开(公告)日：2017-10-17

申请号：US13781777

申请日：2013-03-01

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Wei-Hsiang Hung

IPC: G09G3/00 ,  H02J4/00 ,  H04N5/14

CPC classification number: G09G3/00 ,  G09G2320/0276 ,  G09G2320/0626 ,  H02J4/00 ,  H04N5/148 ,  Y10T307/461

Abstract: A load driving apparatus for driving a plurality of loads is provided. The load driving apparatus includes an output stage module, a load driving module, and an output stage selection module. The output stage module includes a plurality of output stages. Each of the output stages is coupled to a corresponding one of the loads. The load driving module is coupled to the output stage module and outputs a driving signal to drive one of the loads through the output stage module. The output stage selection module is coupled between the output stage module and the load driving module and selects one of the output stages in the output stage module, so that the load driving module drives the load which is coupled to the selected output stage through the selected output stage. Furthermore, a grayscale voltage generating circuit including the foregoing load driving apparatus is also provided.

公开(公告)号：US09142181B2

公开(公告)日：2015-09-22

申请号：US13964121

申请日：2013-08-12

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chia-Hsun Kuo ,  Chia-Wei Su ,  Ji-Ting Chen ,  Shun-Hsun Yang ,  Wei-Hsiang Hung ,  Ying-Zu Lin ,  Li-Tang Lin

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021 ,  G09G2330/023

Abstract: A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level.

Abstract translation: 一种显示驱动器，包括：第一预定电压电平提供装置，用于提供包括至少一个第一预定电压电平的第一预定电压电平组; 第一图像数据提供装置，用于输出第一图像数据; 以及检测控制电路，用于根据第一图像数据的电压电平的绝对值和绝对值之间的关系来确定第一图像数据提供装置的输出端是否被预充电到第一预定电压电平 第一预定电压电平。

公开(公告)号：US20140078189A1

公开(公告)日：2014-03-20

申请号：US13781777

申请日：2013-03-01

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ji-Ting Chen ,  Wei-Hsiang Hung

IPC: G09G3/00 ,  H02J4/00

CPC classification number: G09G3/00 ,  G09G2320/0276 ,  G09G2320/0626 ,  H02J4/00 ,  H04N5/148 ,  Y10T307/461

Abstract: A load driving apparatus for driving a plurality of loads is provided. The load driving apparatus includes an output stage module, a load driving module, and an output stage selection module. The output stage module includes a plurality of output stages. Each of the output stages is coupled to a corresponding one of the loads. The load driving module is coupled to the output stage module and outputs a driving signal to drive one of the loads through the output stage module. The output stage selection module is coupled between the output stage module and the load driving module and selects one of the output stages in the output stage module, so that the load driving module drives the load which is coupled to the selected output stage through the selected output stage. Furthermore, a grayscale voltage generating circuit including the foregoing load driving apparatus is also provided.

Abstract translation: 提供了用于驱动多个负载的负载驱动装置。 负载驱动装置包括输出级模块，负载驱动模块和输出级选择模块。 输出级模块包括多个输出级。 每个输出级耦合到相应的一个负载。 负载驱动模块耦合到输出级模块并输出驱动信号以通过输出级模块驱动负载之一。 输出级选择模块耦合在输出级模块和负载驱动模块之间，并选择输出级模块中的一个输出级，使得负载驱动模块通过所选择的驱动模块驱动耦合到所选输出级的负载 输出阶段。 此外，还提供了包括上述负载驱动装置的灰度级电压发生电路。