Novatek Microelectronics Corp.

I-Te Liu

Chien-Yu Chen

Chia-Wei Chang

Hsien-Wen Lo

Wei-Zen Chen

Kun-Yueh Lin

Kuei-Chung Chang

Yu-Huang Chen

Chun-Ta Wu

Wan-Yu Kuo

Tzu-Chu Yin

Chia-Chien Shih

A touch circuit including an integrator circuit and a compensation circuit is provided. The integrator circuit includes a first terminal, a second terminal and an output terminal. The first terminal of the integrator circuit is coupled to a touch sensor, and the second terminal of the integrator circuit is coupled to a first voltage. The compensation circuit includes a first terminal and a second terminal. The first terminal of the compensation circuit is coupled to the first terminal of the integrator circuit, and the second terminal of the compensation circuit is coupled to a second voltage. When the touch circuit senses a sensing current from the touch sensor, the first voltage is increased and the second voltage is decreased.

Touch circuit

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.

Integrated circuit for driving display panel and method thereof

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.

High sensitivity readout circuit for touch panel

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.

Driving apparatus and method

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.

Display driving apparatus and method for driving touch display panel

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.

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Chiayi County, Taiwan

I-Te Liu