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公开(公告)号：US20250106961A1
公开(公告)日：2025-03-27
申请号：US18371453
申请日：2023-09-22
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Keko-Chun Liang , Chun-Fu Lin , Jin-Yi Lin , Chieh-An Lin , Po-Hsiang Fang
IPC: H05B45/14 , H05B45/325
Abstract: According to an embodiment of the invention, a backlight driver of driving a light-emitting diode (LED) string via a driving transistor in a load path is provided. The LED string, the driving transistor, and an electrical load are coupled to form the load path. The backlight driver includes a current regulator and a headroom detection circuit. The current regulator is coupled to the driving transistor and the first terminal of the electrical load to control a driving current flowing through the load path according to at least a feedback voltage from a first terminal of the electrical load. The headroom detection circuit is coupled to the first terminal of the electrical load and a voltage regulator to control the voltage regulator to regulate a supply voltage to a first terminal of the LED string according to at least the feedback voltage.
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公开(公告)号：US12142245B2
公开(公告)日：2024-11-12
申请号：US17945082
申请日：2022-09-14
Applicant: NOVATEK Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu , Yi-Yang Tsai , Po-Hsiang Fang
Abstract: A control system includes a plurality of driving circuits coupled in series, which include a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a first flag signal selector. The first transmitter is coupled to the first receiver, and the first flag signal selector is coupled between the first receiver and the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver, a second transmitter and a second flag signal selector. The second transmitter is coupled to the second receiver, and the second flag signal selector is coupled between the second receiver and the second transmitter.
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公开(公告)号：US12142190B1
公开(公告)日：2024-11-12
申请号：US18522263
申请日：2023-11-29
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-An Lin , Chun-Wei Kang , Po-Hsiang Fang , Keko-Chun Liang , Jhih-Siou Cheng , Nien-Tsung Hsueh , Che-Wei Yeh , Yu-Hsiang Wang
Abstract: A display control system for controlling a display panel having a plurality of display zones includes a main controller, a plurality of display driver circuits and a plurality of memories. Each of the display driver circuits is coupled to a corresponding display zone among the plurality of display zones, to control the corresponding display zone. Each of the memories is coupled to a corresponding display driver circuit among the plurality of display driver circuits, to store a compensation data for the corresponding display zone controlled by the corresponding display driver circuit. The plurality of display driver circuits are cascaded through a plurality of first transmission channels and connected through at least one second transmission channel, and each of the first transmission channels is coupled between two of the plurality of display driver circuits or between one of the plurality of display driver circuits and the main controller.
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公开(公告)号：US11749168B1
公开(公告)日：2023-09-05
申请号：US17857154
申请日：2022-07-04
Applicant: Novatek Microelectronics Corp.
Inventor： Ho-Chun Chang , Che-Wei Yeh , Yu-Hsiang Wang , Keko-Chun Liang
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2300/0838 , G09G2310/0289
Abstract: The disclosure provides a data receiver, including a first capacitor, a second capacitor, a first inverter and a second inverter. The first capacitor has a first terminal and a second terminal, and the first terminal receives a first input signal. The second capacitor has a third terminal and a fourth terminal, and the third terminal receives a second input signal. The first inverter has a first input terminal and a first output terminal. The second inverter has a second input terminal and a second output terminal. The first input terminal and the second output terminal are coupled to the second terminal of the first capacitor, and the second input terminal and the first output terminal are coupled to the fourth terminal of the second capacitor. The first output terminal generates a first output signal with a first output voltage, and the second output terminal generates a second output signal with a second output voltage.
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公开(公告)号：US11527195B2
公开(公告)日：2022-12-13
申请号：US17238179
申请日：2021-04-22
Applicant: NOVATEK Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu
Abstract: A display control system includes a plurality of driver circuits connected in series. A driver circuit among the plurality of driver circuits includes a receiver, a duty cycle correction circuit and a transmitter. The receiver is configured to receive a first signal from a previous driver circuit among the plurality of driver circuits. The duty cycle correction circuit, coupled to the receiver, is configured to adjust a duty cycle of the first signal to generate a second signal. The transmitter, coupled to the duty cycle correction circuit, is configured to transmit the second signal to a next driver circuit among the plurality of driver circuits.
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Patent Agency Ranking
公开(公告)号：US20220254305A1
公开(公告)日：2022-08-11
申请号：US17721337
申请日：2022-04-14
Applicant: Novatek Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu
IPC: G09G3/32
Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original data signal and outputs a first data signal, the Nth stage LED driver receives a (N−1)th data signal and outputs a Nth data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to the (N−1)th data signal; and a first transmitter outputting the Nth data signal according to the recovery clock signal and the recovery data signal.
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公开(公告)号：US11341904B2
公开(公告)日：2022-05-24
申请号：US17138772
申请日：2020-12-30
Applicant: Novatek Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu
IPC: G09G3/32
Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original data signal and outputs a first data signal, the Nth stage LED driver receives a (N−1)th data signal and outputs a Nth data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to the (N−1)th data signal; and a first transmitter outputting the Nth data signal according to the recovery clock signal and the recovery data signal.
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公开(公告)号：US11295671B2
公开(公告)日：2022-04-05
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.
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公开(公告)号：US20210118359A1
公开(公告)日：2021-04-22
申请号：US17138772
申请日：2020-12-30
Applicant: Novatek Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu
IPC: G09G3/32
Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original data signal and outputs a first data signal, the Nth stage LED driver receives a (N−1)th data signal and outputs a Nth data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to the (N−1)th data signal; and a first transmitter outputting the Nth data signal according to the recovery clock signal and the recovery data signal.
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公开(公告)号：US20210049952A1
公开(公告)日：2021-02-18
申请号：US16841686
申请日：2020-04-07
Applicant: Novatek Microelectronics Corp.
Inventor： Che-Wei Yeh , Keko-Chun Liang , Yu-Hsiang Wang , Yong-Ren Fang , Yi-Chuan Liu
IPC: G09G3/32
Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original display data signal and outputs a first display data signal, the Nth stage LED driver receives a (N−1)th display data signal and outputs a Nth display data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to a first phase difference between the (N−1)th display data signal and the recovery clock signal; and a first transmitter outputting the Nth display data signal according to the recovery clock signal and the recovery data signal.
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