公开(公告)号：US10473531B2

公开(公告)日：2019-11-12

申请号：US15695021

申请日：2017-09-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ying-Chieh Yen ,  Min-Hung Hu ,  Yuan-Te Chen ,  Cun-Kai Zhao ,  Chien-Chuan Huang

IPC: G01K11/00 ,  G01K7/16 ,  G02F1/1333 ,  H02H5/04

Abstract: A temperature sensor includes a plurality of temperature coefficient voltage generators, one or more converters and at least one variable voltage or current source. The temperature coefficient voltage generators are used for generating multiple temperature coefficient voltages. The converters, coupled to the temperature coefficient voltage generators, are used for converting the temperature coefficient voltages to digital values. The at least one variable voltage or current source, each coupled to at least one of the temperature coefficient voltage generators, includes a first variable voltage or current source for outputting a first voltage or current in a first time period, and outputting a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.

公开(公告)号：US20180188292A1

公开(公告)日：2018-07-05

申请号：US15394770

申请日：2016-12-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min-Hung Hu ,  Hsi-Ming Chen ,  Chao-Wei Su ,  Ying-Chieh Yen

IPC: G01R15/14 ,  G01R19/00

CPC classification number: G01R15/146 ,  G01R19/0023 ,  G01R19/0092

Abstract: A current measurement circuit for measuring a current consumption of a circuit system includes a plurality of current measurement units and a current-to-voltage (I-V) converter. Each of the current measurement units includes an impedance unit and a voltage-to-current (V-I) converter. The impedance unit includes a first terminal and a second terminal. The V-I converter, coupled to the first terminal and the second terminal of the impedance unit, includes an output terminal and an operational transconductance amplifier (OTA). The plurality of output terminals of the plurality of V-I converters of the plurality of current measurement units are coupled to a first node. The I-V converter is coupled to the first node.

公开(公告)号：US10175267B2

公开(公告)日：2019-01-08

申请号：US15394770

申请日：2016-12-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min-Hung Hu ,  Hsi-Ming Chen ,  Chao-Wei Su ,  Ying-Chieh Yen

IPC: G01R15/14 ,  G01R19/00

Abstract: A current measurement circuit for measuring a current consumption of a circuit system includes a plurality of current measurement units and a current-to-voltage (I-V) converter. Each of the current measurement units includes an impedance unit and a voltage-to-current (V-I) converter. The impedance unit includes a first terminal and a second terminal. The V-I converter, coupled to the first terminal and the second terminal of the impedance unit, includes an output terminal and an operational transconductance amplifier (OTA). The plurality of output terminals of the plurality of V-I converters of the plurality of current measurement units are coupled to a first node. The I-V converter is coupled to the first node.

公开(公告)号：US11783795B1

公开(公告)日：2023-10-10

申请号：US17894122

申请日：2022-08-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ying-Chieh Yen ,  Po-Chiang Hsu ,  Ching-Hao Lee ,  Cheng-Hsun Tsai

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G2310/0291 ,  G09G2330/025 ,  G09G2330/06

Abstract: A gate driver for a panel, wherein the gate driver comprises at least an output channel unit, each of the output channel unit includes a first driving unit; a second driving unit; a first current limit circuit, coupled to the first driving unit, configured to control an output current according to an output voltage of the gate driver to limit an output current slew rate of the gate driver; and a second current limit circuit, coupled to the second driving unit, configured to control the output current according to the output voltage of the gate driver to limit the output current slew rate of the gate driver.

公开(公告)号：US20190072435A1

公开(公告)日：2019-03-07

申请号：US15695021

申请日：2017-09-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ying-Chieh Yen ,  Min-Hung Hu ,  Yuan-Te Chen ,  Cun-Kai Zhao ,  Chien-Chuan Huang

IPC: G01K7/16

CPC classification number: G01K7/16 ,  G01K7/01 ,  G01K7/21 ,  G01K2219/00 ,  G02F1/133382 ,  H02H1/0007 ,  H02H5/042

Abstract: A temperature sensor includes a plurality of temperature coefficient voltage generators, one or more converters and at least one variable voltage or current source. The temperature coefficient voltage generators are used for generating multiple temperature coefficient voltages. The converters, coupled to the temperature coefficient voltage generators, are used for converting the temperature coefficient voltages to digital values. The at least one variable voltage or current source, each coupled to at least one of the temperature coefficient voltage generators, includes a first variable voltage or current source for outputting a first voltage or current in a first time period, and outputting a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.