公开(公告)号：US10725486B2

公开(公告)日：2020-07-28

申请号：US16052654

申请日：2018-08-02

Applicant: Novatek Microelectronics Corp.

Inventor： Yong-Ren Fang ,  Shen-Iuan Liu ,  Ju-Lin Huang ,  Tzu-Chien Tzeng ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Che-Wei Yeh

IPC: G05F1/46 ,  H03K5/24 ,  G01R19/165

Abstract: A reference voltage generator includes a detecting voltage provider, a comparator, and a core circuit. The detecting voltage provider provides a detecting voltage with a first voltage level corresponding to a voltage coefficient. The comparator compares the first voltage level of the detecting voltage with a plurality of sampled amplitudes of an input signal to respectively generate a plurality of comparison results. The core circuit is used to: collect a plurality of first comparison results associated with a current received bit of a preset value from the comparison results; take the voltage coefficient as a first boundary voltage coefficient in response to the first comparison results satisfying a first condition; take the voltage coefficient as a second boundary voltage coefficient in response to the first comparison results satisfying a second condition. The reference circuit generates a reference voltage according to the first and second boundary voltage coefficients.

公开(公告)号：US10121777B2

公开(公告)日：2018-11-06

申请号：US15275492

申请日：2016-09-26

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Yu Lin ,  Jie-Ting Chen ,  Ming-Dou Ker ,  Tzu-Chien Tzeng ,  Keko-Chun Liang ,  Ju-Lin Huang

IPC: H01L29/74 ,  H01L27/02 ,  H01L29/87 ,  H01L29/06

Abstract: A silicon controlled rectifier including a semiconductor substrate, first and second semiconductor wells, first and second semiconductor regions, third and fourth semiconductor regions and a silicide layer is provided. The first and the second semiconductor wells are formed in the semiconductor substrate. The first and the second semiconductor regions are respectively formed in the first and the second semiconductor wells in spaced apart relation. The third and the fourth semiconductor regions are respectively formed in the first and the second semiconductor wells. The silicide layer is formed on the third and the fourth semiconductor regions. The silicon controlled rectifier is at least suitable for high frequency circuit application. The silicon controlled rectifier has a relatively low trigger voltage, a relatively high electrostatic discharge level, and a relatively low capacitance.

公开(公告)号：US20140015587A1

公开(公告)日：2014-01-16

申请号：US13792245

申请日：2013-03-11

Applicant: NOVATEK MICROELECTRONICS CORP

Inventor： Cheng-Hung Chen ,  Ju-Lin Huang ,  Keko-Chun Liang

IPC: H03K3/012

CPC classification number: H03K3/012 ,  H03K3/356182

Abstract: A level shifting circuit with dynamic control includes a dynamic controller and a level shifter. The dynamic controller outputs a dynamic voltage and an output data signal. The level shifter under control by the dynamic controller includes an input signal receiver, an output signal generator, and a bias current controller, which are coupled in series between a ground voltage and a high level voltage. The input signal receiver receives the output data signal of the dynamic controller and the output signal generator produces a level-shifted data signal according to the input data signal. The bias current controller controlled by the dynamic voltage is at a first current-output capability when the level-shifted data signal is at a stable stage and at a second current-output capability when the level-shifted data signal is at an unstable stage. The first current-output capability is greater than the second current-output capability.

Abstract translation: 具有动态控制的电平移动电路包括动态控制器和电平转换器。 动态控制器输出动态电压和输出数据信号。 由动态控制器控制的电平移位器包括输入信号接收器，输出信号发生器和偏置电流控制器，它们串联在接地电压和高电平电压之间。 输入信号接收器接收动态控制器的输出数据信号，输出信号发生器根据输入数据信号产生电平移位数据信号。 当电平移位数据信号处于不稳定阶段时，当电平移位数据信号处于稳定级并处于第二电流输出能力时，由动态电压控制的偏置电流控制器处于第一电流输出能力。 第一个电流输出能力大于第二个电流输出能力。

公开(公告)号：US12141392B2

公开(公告)日：2024-11-12

申请号：US17531848

申请日：2021-11-22

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Keko-Chun Liang ,  Jhih-Siou Cheng ,  Hsu-Chih Wei ,  Jui-Chan Chang ,  Ju-Lin Huang ,  Po-Ying Chen ,  Wen-Yi Hsieh

IPC: G06F3/041 ,  G09G3/36

Abstract: The present invention discloses a display panel and a display device. The display panel comprises a plurality of common electrode blocks and a plurality of display regions. During a display period, one or more common electrode blocks corresponding to one of the display regions which is to be displayed during the display period are coupled to a common voltage; and during the display period, one or more of the common electrode blocks corresponding to the display regions which are not to be displayed during the display period are kept in a floating state.

公开(公告)号：US11367390B2

公开(公告)日：2022-06-21

申请号：US16429049

申请日：2019-06-02

Applicant: Novatek Microelectronics Corp.

Inventor： Keko-Chun Liang ,  Yu-Hsiang Wang ,  Jhih-Siou Cheng ,  Yi-Chuan Liu ,  Ju-Lin Huang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: A display apparatus and a method for noise reduction are introduced. The method comprises steps of sensing a first pixel signal being superimposed by noises from a first pixel through a first sensing line in a first phase of a sensing operation and sensing a first noise signal from the first sensing line in a second phase of the sensing operation. The method further comprises steps of sensing a second noise signal from a second sensing line in the first phase of the sensing operation, and sensing a third noise signal from the second sensing line in the second phase of the sensing operation. The method further removes the noises that are superimposed to the first pixel signal according to a difference between the first pixel signal and the first noise signal and a difference between the second noise signal and the third noise signal to generate a denoised sensing value of the first pixel.

公开(公告)号：US20210383749A1

公开(公告)日：2021-12-09

申请号：US17409824

申请日：2021-08-24

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: A LED driving apparatus with differential signal interfaces is introduced, including: N-stages LED drivers, wherein the first stage LED driver receives a first data packet differential signal and a first clock differential signal and outputs a second data packet differential signal and a second clock differential signal, the Mth stage LED driver receives a Mth data packet differential signal and a Mth clock differential signal and outputs a (M+1)th data packet differential signal and a (M+1)th clock differential signal.

公开(公告)号：US20210304675A1

公开(公告)日：2021-09-30

申请号：US16827713

申请日：2020-03-24

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Po-Hsiang Fang ,  Chieh-An Lin ,  Keko-Chun Liang ,  Ju-Lin Huang

IPC: G09G3/3258

Abstract: A display driver and a display driving method are provided. The display driving is adapted for driving a display panel and sensing an electrical characteristic of the display panel. The display driver includes a first amplifier circuit. The first amplifier circuit is coupled to the display panel. The first amplifier circuit includes a first driving circuit, a first sensing circuit and a first operational amplifier. The first operational amplifier is coupled to the display panel through a first driving line and a first sensing line. The first driving circuit is configured to provide a first driving signal to the display panel through the first operational amplifier and the first driving line during a driving period. The first sensing circuit is configured to receive a first sensing signal from the display panel through the first operational amplifier and the first sensing line during a first sensing period.

公开(公告)号：US11010136B2

公开(公告)日：2021-05-18

申请号：US16159734

申请日：2018-10-15

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang

IPC: G06F7/58 ,  H03M3/00 ,  H03K3/84

Abstract: A random bit stream generator which includes a pseudo-random bit stream generator and a multi-stage noise shaping (MASH) delta-sigma modulator is introduced. The pseudo-random bit stream generator may generate a first random bit stream according to a first clock signal. The MASH delta-sigma modulator is coupled to the first random bit stream generator to receive the first random bit stream and output a second random bit stream according to the first random bit stream and a second clock signal. A frequency of the second clock signal is greater than a frequency of the first clock signal, and the random bit stream has bell-shaped distribution. A method of generating a random bit stream having bell-shaped distribution adapted to a random bit stream generator is also introduced.

公开(公告)号：US20210049956A1

公开(公告)日：2021-02-18

申请号：US17004025

申请日：2020-08-27

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: A LED driving apparatus with differential signal interfaces is introduced, including: N-stages LED drivers, wherein the first stage LED driver receives a first data packet differential signal and a first clock differential signal and outputs a second data packet differential signal and a second clock differential signal, the Mth stage LED driver receives a Mth data packet differential signal and a Mth clock differential signal and outputs a (M+1)th data packet differential signal and a (M+1)th clock differential signal.

公开(公告)号：US20190325808A1

公开(公告)日：2019-10-24

申请号：US15957910

申请日：2018-04-20

Applicant: Novatek Microelectronics Corp.

Inventor： Keko-Chun Liang ,  Jhih-Siou Cheng ,  Wen-Hsin Cheng

IPC: G09G3/20

Abstract: A driver of a display panel comprises an operational amplifier and a bias control circuit. The operational amplifier outputs an output signal to drive the display panel according to a bias voltage. The bias control circuit is coupled to the operational amplifier and is configured to output the bias voltage to the operational amplifier, wherein the bias control circuit generates the bias voltage according to a random bit stream. The bias voltage is changed according to signal levels of the random bit stream, and a systematic voltage offset of the operational amplifier is adjusted according to the bias voltage. A method adapted to a driver of a display panel, and a display system are also introduced.