公开(公告)号：US20190129533A1

公开(公告)日：2019-05-02

申请号：US16022710

申请日：2018-06-29

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Wei-Zen Chen

IPC: G06F3/044

Abstract: A readout circuit of a touch panel is provided. The readout circuit includes a charge modulator and a correlated double sampling demodulator. The charge modulator is configured to provide a driving current to charge or discharge a sensing electrode of the touch panel and generate a sensing voltage signal. The correlated double sampling demodulator is coupled to the charge modulator. The correlated double sampling demodulator is configured to sample the sensing voltage signal to obtain a voltage variation when a touch event happens. A method for driving the touch panel is also provided.

公开(公告)号：US20160351165A1

公开(公告)日：2016-12-01

申请号：US14727763

申请日：2015-06-01

Applicant: Novatek Microelectronics Corp.

Inventor： Kuei-Chung Chang ,  Wan-Yu Kuo ,  Tzu-Chu Yin ,  Chun-Ta Wu ,  I-Te Liu

IPC: G09G5/04 ,  G09G5/30 ,  G09G5/10 ,  G06F3/0484 ,  G09G5/00

CPC classification number: G06F3/04842 ,  G09G3/2003 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0666 ,  G09G2320/0673

Abstract: A display driver configured to drive a display panel to display an image is provided. The display driver includes an interpolation operation unit and a gamma circuit. The interpolation operation unit is configured to receive two gamma reference curves, and perform an interpolation operation on the two gamma reference curves to generate a plurality of gamma curves. The gamma circuit is configured to select one of the generated gamma curves based on a user selection signal, and drive the display panel to display the image based on the selected gamma curve, so as to adjust a color temperature of the image based on the user selection signal. Color temperatures of the generated gamma curves are distinct, and the generated gamma curves have the same gamma value. Furthermore, a method for adjusting a color temperature of an image is also provided.

Abstract translation: 提供了配置成驱动显示面板显示图像的显示驱动器。 显示驱动器包括内插运算单元和伽马电路。 内插运算单元被配置为接收两个伽马参考曲线，并对两个伽马参考曲线进行插值运算以产生多个伽马曲线。 伽马电路被配置为基于用户选择信号来选择所生成的伽马曲线中的一个，并且基于所选择的伽马曲线驱动显示面板显示图像，以便基于用户来调整图像的色温 选择信号。 产生的伽马曲线的色温是不同的，所产生的伽马曲线具有相同的伽马值。 此外，还提供了一种用于调节图像的色温的方法。

公开(公告)号：US09870087B2

公开(公告)日：2018-01-16

申请号：US14722168

申请日：2015-05-27

Applicant: Novatek Microelectronics Corp.

Inventor： Kun-Yueh Lin ,  I-Te Liu ,  Chien-Yu Chen

IPC: G06F3/041 ,  G02F1/1333

CPC classification number: G06F3/0416 ,  G02F1/13338

Abstract: A display driving apparatus configured to drive a touch display panel is provided. The touch display panel includes gate drivers and scan lines. The display driving apparatus includes a driving controller. The driving controller provides clock signals to the gate drivers during a display period. The display period includes scan operation periods. The gate drivers drive the scan lines according to the clock signals during the scan operation periods. The driving controller further provides a clear signal and a pre-charge signal to at least one of the gate drivers to insert at least one touch sensing period between the scan operation periods, so that the touch display panel performs a touch sensing operation during the at least one touch sensing period. Furthermore, a method for driving the touch display panel is also provided.

公开(公告)号：US09772756B2

公开(公告)日：2017-09-26

申请号：US14727763

申请日：2015-06-01

Applicant: Novatek Microelectronics Corp.

Inventor： Kuei-Chung Chang ,  Wan-Yu Kuo ,  Tzu-Chu Yin ,  Chun-Ta Wu ,  I-Te Liu

IPC: G09G5/02 ,  G06F3/0484 ,  G09G3/20

CPC classification number: G06F3/04842 ,  G09G3/2003 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0666 ,  G09G2320/0673

Abstract: A display driver configured to drive a display panel to display an image is provided. The display driver includes an interpolation operation unit and a gamma circuit. The interpolation operation unit is configured to receive two gamma reference curves, and perform an interpolation operation on the two gamma reference curves to generate a plurality of gamma curves. The gamma circuit is configured to select one of the generated gamma curves based on a user selection signal, and drive the display panel to display the image based on the selected gamma curve, so as to adjust a color temperature of the image based on the user selection signal. Color temperatures of the generated gamma curves are distinct, and the generated gamma curves have the same gamma value. Furthermore, a method for adjusting a color temperature of an image is also provided.

公开(公告)号：US10283071B2

公开(公告)日：2019-05-07

申请号：US15891389

申请日：2018-02-08

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Chia-Wei Chang ,  Chien-Yu Chen ,  Hsien-Wen Lo

IPC: G09G3/20 ,  G09G3/36

Abstract: An integrated circuit for driving a display panel is provided. The integrated circuit includes a gamma mapping circuit and a mura compensation circuit. The gamma mapping circuit is configured to receive a gray level of an image data, map the gray level to a gamma code according to at least one gamma table, and output the gamma code. The mura compensation circuit is configured to receive the gamma code, and compensate the gamma code according to at least one de-mura table to generate a compensation result after the gamma mapping circuit performs the step of mapping the gray level to the gamma code. The integrated circuit drives the display panel according to the compensation result. In addition, a method for driving a display panel is also provided.

公开(公告)号：US10585539B2

公开(公告)日：2020-03-10

申请号：US16022710

申请日：2018-06-29

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Wei-Zen Chen

IPC: G06F3/041 ,  G06F3/044 ,  H03K17/96 ,  H04N5/378

Abstract: A readout circuit of a touch panel is provided. The readout circuit includes a charge modulator and a correlated double sampling demodulator. The charge modulator is configured to provide a driving current to charge or discharge a sensing electrode of the touch panel and generate a sensing voltage signal. The correlated double sampling demodulator is coupled to the charge modulator. The correlated double sampling demodulator is configured to sample the sensing voltage signal to obtain a voltage variation when a touch event happens. A method for driving the touch panel is also provided.

公开(公告)号：US20180166030A1

公开(公告)日：2018-06-14

申请号：US15891389

申请日：2018-02-08

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Chia-Wei Chang ,  Chien-Yu Chen ,  Hsien-Wen Lo

IPC: G09G3/36 ,  G09G3/3258

CPC classification number: G09G3/3696 ,  G09G3/20 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/046

Abstract: An integrated circuit for driving a display panel is provided. The integrated circuit includes a gamma mapping circuit and a mura compensation circuit. The gamma mapping circuit is configured to receive a gray level of an image data, map the gray level to a gamma code according to at least one gamma table, and output the gamma code. The mura compensation circuit is configured to receive the gamma code, and compensate the gamma code according to at least one de-mura table to generate a compensation result after the gamma mapping circuit performs the step of mapping the gray level to the gamma code. The integrated circuit drives the display panel according to the compensation result. In addition, a method for driving a display panel is also provided.

公开(公告)号：US20180075802A1

公开(公告)日：2018-03-15

申请号：US15614629

申请日：2017-06-06

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Chia-Wei Chang ,  Chien-Yu Chen ,  Hsien-Wen Lo

IPC: G09G3/3233 ,  G09G3/36

Abstract: An integrated circuit for driving a display panel is provided. The integrated circuit includes a gamma mapping unit and a mura compensation unit. The gamma mapping unit is configured to receive a gray level of an image data, map the gray level to a gamma code according to at least one gamma table, and output the gamma code. The mura compensation unit is configured to receive the gamma code, and compensate the gamma code according to at least one de-mura table to generate a compensation result after the gamma mapping unit performs the step of mapping the gray level to the gamma code. The integrated circuit drives the display panel according to the compensation result. In addition, a method for driving a display panel is also provided.

公开(公告)号：US10699662B2

公开(公告)日：2020-06-30

申请号：US15614629

申请日：2017-06-06

Applicant: Novatek Microelectronics Corp.

Inventor： I-Te Liu ,  Chia-Wei Chang ,  Chien-Yu Chen ,  Hsien-Wen Lo

IPC: G09G3/36 ,  G09G3/20 ,  G09G3/3233

Abstract: An integrated circuit for driving a display panel is provided. The integrated circuit includes a gamma mapping unit and a mura compensation unit. The gamma mapping unit is configured to receive a gray level of an image data, map the gray level to a gamma code according to at least one gamma table, and output the gamma code. The mura compensation unit is configured to receive the gamma code, and compensate the gamma code according to at least one de-mura table to generate a compensation result after the gamma mapping unit performs the step of mapping the gray level to the gamma code. The integrated circuit drives the display panel according to the compensation result. In addition, a method for driving a display panel is also provided.

公开(公告)号：US20160349896A1

公开(公告)日：2016-12-01

申请号：US14722168

申请日：2015-05-27

Applicant: Novatek Microelectronics Corp.

Inventor： Kun-Yueh Lin ,  I-Te Liu ,  Chien-Yu Chen

IPC: G06F3/041 ,  G02F1/1333

CPC classification number: G06F3/0416 ,  G02F1/13338

Abstract: A display driving apparatus configured to drive a touch display panel is provided. The touch display panel includes gate drivers and scan lines. The display driving apparatus includes a driving controller. The driving controller provides clock signals to the gate drivers during a display period. The display period includes scan operation periods. The gate drivers drive the scan lines according to the clock signals during the scan operation periods. The driving controller further provides a clear signal and a pre-charge signal to at least one of the gate drivers to insert at least one touch sensing period between the scan operation periods, so that the touch display panel performs a touch sensing operation during the at least one touch sensing period. Furthermore, a method for driving the touch display panel is also provided.

Abstract translation: 提供了一种驱动触摸显示面板的显示驱动装置。 触摸显示面板包括栅极驱动器和扫描线。 显示驱动装置包括驱动控制器。 驱动控制器在显示期间向门驱动器提供时钟信号。 显示周期包括扫描操作周期。 栅极驱动器在扫描操作期间根据时钟信号驱动扫描线。 驱动控制器还向至少一个栅极驱动器提供清除信号和预充电信号，以在扫描操作周期之间插入至少一个触摸感测周期，使得触摸显示面板在at 至少一个触摸感应周期。 此外，还提供了一种用于驱动触摸显示面板的方法。