公开(公告)号：US11687105B2

公开(公告)日：2023-06-27

申请号：US17363472

申请日：2021-06-30

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Kuo Wei Cheng

IPC: H03K17/687 ,  G05F1/56 ,  H03K19/0944 ,  G05F1/44 ,  H03K17/06

CPC classification number: G05F1/56 ,  G05F1/44 ,  H03K17/063 ,  H03K17/6871 ,  H03K19/0944

Abstract: A driving device includes a voltage regulator, a voltage generator, and a first NMOSFET. The voltage regulator is coupled between a first high-voltage terminal and the output terminal of the driving device. The voltage regulator receives the first high voltage of the first high-voltage terminal. The voltage regulator steps down the first high voltage to generate a supply voltage. The voltage generator is coupled to a second high-voltage terminal and the output terminal of the driving device. The voltage generator provides a reference voltage for the output terminal of the driving device. The reference voltage is substantially lower than the supply voltage. The first NMOSFET is coupled between the output terminal of the driving device and a low-voltage terminal.

公开(公告)号：US20220021830A1

公开(公告)日：2022-01-20

申请号：US16933941

申请日：2020-07-20

Applicant: Novatek Microelectronics Corp.

Inventor： Kuo Wei Cheng ,  Jen-Yi Lin ,  Jung-Chen Chung

IPC: H04N5/369 ,  H04N5/378

Abstract: An optical sensing device, including a first power rail, a second power rail, and a plurality of optical sensing elements arranged in an array, is provided. Each optical sensing element can include a photo diode, a reset switch, and a buffer. The reset switch can have a control terminal to receive a reset signal. A first terminal of the reset switch can be coupled to the first power rail and a second terminal of the reset switch is coupled to the photo diode. A first terminal of the buffer can be coupled to the second power rail, a second terminal of the buffer can be coupled to the second terminal of the reset switch and the photo diode, and a third terminal of the buffer is configured to provide a sensing signal. The second power rail is separate or independent from the first power rail.

公开(公告)号：US11178351B1

公开(公告)日：2021-11-16

申请号：US16869584

申请日：2020-05-07

Applicant: Novatek Microelectronics Corp.

Inventor： Kuo Wei Cheng ,  Chi-Ting Chen

IPC: H04N5/378 ,  H04N5/357 ,  H01L27/146 ,  H04N5/3745

Abstract: A readout circuit is provided. The readout circuit is coupled to a pixel circuit for reading out signals from the pixel circuit. The readout circuit includes a biasing circuit. The biasing circuit includes a cascode transistor and a biasing transistor. A first terminal of the cascode transistor is coupled to an output terminal of the biasing circuit and the pixel circuit. A second terminal of the cascode transistor is coupled to a first terminal of the biasing transistor. A second terminal of the biasing transistor is coupled to a negative voltage.

公开(公告)号：US20210352237A1

公开(公告)日：2021-11-11

申请号：US16869584

申请日：2020-05-07

Applicant: Novatek Microelectronics Corp.

Inventor： Kuo Wei Cheng ,  Chi-Ting Chen

IPC: H04N5/378 ,  H04N5/3745 ,  H04N5/357 ,  H01L27/146

Abstract: A readout circuit is provided. The readout circuit is coupled to a pixel circuit for reading out signals from the pixel circuit. The readout circuit includes a biasing circuit. The biasing circuit includes a cascode transistor and a biasing transistor. A first terminal of the cascode transistor is coupled to an output terminal of the biasing circuit and the pixel circuit. A second terminal of the cascode transistor is coupled to a first terminal of the biasing transistor. A second terminal of the biasing transistor is coupled to a negative voltage.