公开(公告)号：US10804865B1

公开(公告)日：2020-10-13

申请号：US16729495

申请日：2019-12-30

Applicant: NOVATEK Microelectronics Corp.

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

IPC: H03M1/12 ,  H03F3/45

Abstract: A current integrator includes an operational amplifier, an integration capacitor and an offset cancelation capacitor. The operational amplifier includes a first input stage and a second input stage. The first input stage is coupled to an input terminal of the current integrator. The integration capacitor is coupled between the first input stage of the operational amplifier and an output terminal of the current integrator. The offset cancelation capacitor is coupled to the second input stage of the operational amplifier.

公开(公告)号：US11881136B2

公开(公告)日：2024-01-23

申请号：US17646198

申请日：2021-12-28

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jhih-Siou Cheng ,  Yen-Ru Kuo ,  Chih-Hsien Chou

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display driver and a driving method thereof is disclosed. The display driver includes at least one first latch, at least one second latch, an output buffer, and a comparator. The first latch receives input data. The input terminal of the second latch is coupled to the output terminal of the first latch. The output buffer, including at least one variable current source, is coupled to the second latch. The comparator is coupled to the first latch, the second latch, and the variable current source. The comparator generates at least one control signal of the variable current source.

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.