公开(公告)号：US20220093037A1

公开(公告)日：2022-03-24

申请号：US17390394

申请日：2021-07-30

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jhih-Siou Cheng ,  Chun-Fu Lin ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.

公开(公告)号：US20220028775A1

公开(公告)日：2022-01-27

申请号：US16934016

申请日：2020-07-21

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Hong-Dyi Chang ,  Chun-Wei Kang ,  Chun-Fu Lin ,  Ju-Lin Huang

IPC: H01L23/498 ,  H01L23/00 ,  H01L25/16 ,  H01L25/18

Abstract: An integrated circuit package, a die carrier, and a die are provided. The die carrier includes at least one die pad and a plurality of leads. The at least one die pad is suitable for carrying the die. The leads surround the at least one die pad. The leads are disposed on four sides of the die carrier. A length of a long side among the four sides is twice or more a length of a short side among the four sides. The die carrier is suitable for a QFN package or a QFP package.

公开(公告)号：US11205382B2

公开(公告)日：2021-12-21

申请号：US16198864

申请日：2018-11-22

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Po-Yu Tseng ,  Keko-Chun Liang ,  Ju-Lin Huang ,  Chih-Hsien Chou

IPC: G09G3/32 ,  G09G3/3258 ,  H01L27/32 ,  H01L27/12

Abstract: A sensing circuit for an organic light-emitting diode (OLED) driver includes a sample and hold circuit and a clamping circuit. The sample and hold circuit includes a capacitor. The clamping circuit, coupled to the sample and hold circuit, is configured to clamp a sensing voltage received by the sample and hold circuit to conform to a withstand voltage of the capacitor.

公开(公告)号：US11196397B2

公开(公告)日：2021-12-07

申请号：US16731041

申请日：2019-12-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chih-Wen Lu ,  Chieh-An Lin ,  Yen-Ru Kuo ,  Jhih-Siou Cheng ,  Ju-Lin Huang

IPC: G09G3/3225 ,  H03F3/45

Abstract: The present invention includes a current integrator for an organic light-emitting diode (OLED) panel. The current integrator includes an operational amplifier, which includes an output stage. The output stage, coupled to an output terminal of the current integrator, includes a first output transistor, a second output transistor, a first stack transistor and a second stack transistor. The first stack transistor is coupled between the first output transistor and the output terminal. The second stack transistor is coupled between the second output transistor and the output terminal.

公开(公告)号：US20210203291A1

公开(公告)日：2021-07-01

申请号：US16731041

申请日：2019-12-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chih-Wen Lu ,  Chieh-An Lin ,  Yen-Ru Kuo ,  Jhih-Siou Cheng ,  Ju-Lin Huang

IPC: H03F3/45 ,  G09G3/3225

Abstract: The present invention includes a current integrator for an organic light-emitting diode (OLED) panel. The current integrator includes an operational amplifier, which includes an output stage. The output stage, coupled to an output terminal of the current integrator, includes a first output transistor, a second output transistor, a first stack transistor and a second stack transistor. The first stack transistor is coupled between the first output transistor and the output terminal. The second stack transistor is coupled between the second output transistor and the output terminal.

公开(公告)号：US11004373B2

公开(公告)日：2021-05-11

申请号：US16429051

申请日：2019-06-02

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Fang ,  Jhih-Siou Cheng ,  Ju-Lin Huang

IPC: G09G3/20

Abstract: A source driver and an operating method thereof are provided. The source driver includes a high voltage circuit, a low voltage circuit and a sensing circuit. The low voltage circuit is coupled to the high voltage circuit. The high voltage circuit and low voltage circuit drive a display panel. The sensing circuit is coupled to the low voltage circuit. The sensing circuit senses the display panel during an analog-to-digital operating period. At least one of the high voltage circuit and the low voltage circuit is disabled during at least part of the analog-to-digital operating period.

公开(公告)号：US10762846B2

公开(公告)日：2020-09-01

申请号：US16120468

申请日：2018-09-04

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Tzong-Honge Shieh ,  Chieh-An Lin ,  Ju-Lin Huang

IPC: G09G3/3258 ,  G06F3/041 ,  G06F3/044 ,  G09G3/3275 ,  G09G3/3208

Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels and a signal convertor. The plurality of sensing channels are configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals. The signal convertor is coupled to the sensing channels and configured to receive the sensing signals from the sensing channels. The signal convertor receives the sensing signals from the sensing channels in different sequences during different sensing periods.

公开(公告)号：US20200220350A1

公开(公告)日：2020-07-09

申请号：US16821947

申请日：2020-03-17

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Ju-Lin Huang ,  Chia-En Wu

IPC: H02H9/04 ,  H01L27/02

Abstract: The present invention provides an output circuit with electrostatic discharge (ESD) protection in a semiconductor chip of a source driver. The source driver is configured to drive a display panel. The output circuit includes an output buffer, an output pad, a switch and a first resistor. The switch is coupled between the output buffer and the output pad, wherein data voltages for driving the display panel are transmitted from the output buffer to the output pad via the switch. The switch includes a first metal oxide semiconductor (MOS) transistor, which includes a first terminal coupled to the output pad, a bulk terminal and a gate terminal. The first resistor is coupled between the bulk terminal of the first MOS transistor and a first power supply terminal.

公开(公告)号：US20200168154A1

公开(公告)日：2020-05-28

申请号：US16198864

申请日：2018-11-22

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Po-Yu Tseng ,  Keko-Chun Liang ,  Ju-Lin Huang ,  Chih-Hsien Chou

IPC: G09G3/3258 ,  H01L27/32 ,  H01L27/12

Abstract: A sensing circuit for an organic light-emitting diode (OLED) driver includes a sample and hold circuit and a clamping circuit. The sample and hold circuit includes a capacitor. The clamping circuit, coupled to the sample and hold circuit, is configured to clamp a sensing voltage received by the sample and hold circuit to conform to a withstand voltage of the capacitor.

公开(公告)号：US10417972B1

公开(公告)日：2019-09-17

申请号：US16219866

申请日：2018-12-13

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Ju-Lin Huang

IPC: H03M1/66 ,  G09G3/3291 ,  G09G3/3233 ,  H03M1/74

Abstract: A gamma correction digital-to-analog converter (DAC) includes a first DAC circuit, a second DAC circuit and a voltage generator. The first DAC circuit includes a plurality of first transistors and is configured to receive a plurality of first reference gamma voltages and 1 upper bits of k-bit digital data and generate a first gamma voltage based on the 1 upper bits of the k-bit digital data and the first reference gamma voltages. The second DAC circuit includes a plurality of second transistors and is configured to receive a plurality of second reference gamma voltages and m lower bits of the k-bit digital data and generate a second gamma voltage based on the m lower bits of the k-bit digital data and the second reference gamma voltages. The voltage generator is configured to generate a bulk voltage and supply the generated bulk voltage to a bulk terminal of each of the first transistors or supply the generated bulk voltage to a bulk terminal of each of the second transistors to generate a gamma correction analog signal according to the first gamma voltage and the second gamma voltage. A data driver including a gamma correction DAC and a method thereof are also introduced.