公开(公告)号：US20220004734A1

公开(公告)日：2022-01-06

申请号：US17475367

申请日：2021-09-15

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Wu-Wei Lin ,  Cheng-Hsun Chan

IPC: G06K9/00 ,  H01L27/146 ,  G02F1/1335 ,  G02F1/1333

Abstract: A fingerprint recognition apparatus including a frontplane, a backplane and a display medium layer is provided. The frontplane includes an upper substrate, a black matrix layer, a color filter layer, and a plurality of filtering elements. The black matrix layer is disposed on the upper substrate, and the color filter layer is disposed on the black matrix layer. The black matrix layer includes a plurality of pixel apertures and a plurality of first apertures. The filtering elements cover the first apertures and the filtering elements. The backplane includes a lower substrate and a sensor layer. The sensor layer includes a plurality of photo sensing elements. The photo sensing elements are configured to receive reflected lights from an object through the first apertures and the filtering elements. Areas of the photo sensing elements are overlapped with the first apertures in a longitudinal direction. The display medium layer is disposed between the frontplane and the backplane.

公开(公告)号：US20200232780A1

公开(公告)日：2020-07-23

申请号：US16252739

申请日：2019-01-21

Applicant: Novatek Microelectronics Corp.

Inventor： Chen-Tsung Wu ,  Ji-Ting Chen

IPC: G01B7/287 ,  G06K9/00

Abstract: A capacitive image sensing device and a capacitive image sensing method are provided. The capacitive image sensing device includes a sensor array, a first charge amplifier, a second charge amplifier, a differential amplifier and a first switching circuit. The sensor array includes a plurality of sensing electrodes and a first reference sensing electrode. An input terminal of the first charge amplifier is coupled to one of the sensing electrodes. A first input terminal of the differential amplifier is selectively coupled to an output terminal of the first charge amplifier. A second input terminal of the differential amplifier is coupled to an output terminal of the second charge amplifier. The first switching circuit is configured to selectively electrically connect and disconnect the first reference sensing electrode and the input terminal of the second charge amplifier.

公开(公告)号：US20150270811A1

公开(公告)日：2015-09-24

申请号：US14468338

申请日：2014-08-26

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: H03F1/02 ,  H03F3/45

CPC classification number: H03F3/45237 ,  H03F3/3028 ,  H03F3/45 ,  H03F2200/411 ,  H03F2203/30021 ,  H03F2203/45054 ,  H03F2203/45124 ,  H03F2203/45646 ,  H03F2203/45648

Abstract: An operational amplifier, including an input stage circuit, an output stage circuit and a constant-gm circuit is provided. The input stage circuit provides a driving voltage according to an input voltage. Input terminals of the output stage circuit receive the driving voltage, and an output terminal of the output stage circuit provides an output voltage according to the driving voltage. The constant-gm circuit includes a constant-gm switch circuit, a current mirror circuit and a current mirror switch circuit. The constant-gm switch circuit controls the operation of the constant-gm circuit. The constant-gm switch circuit allows the current mirror circuit to operate during a transient time when the driving voltage is transited according to the driving voltage, so as to provide a compensated current for the input stage circuit. When the driving voltage is during a non-transient time, the current mirror switch circuit turns off the current mirror circuit.

Abstract translation: 提供了一种运算放大器，包括输入级电路，输出级电路和恒流电路。 输入级电路根据输入电压提供驱动电压。 输出级电路的输入端接收驱动电压，输出级电路的输出端根据驱动电压提供输出电压。 恒流电路包括恒定gm开关电路，电流镜电路和电流镜开关电路。 恒定开关电路控制恒流电路的工作。 恒流开关电路允许电流镜电路在驱动电压根据驱动电压转换的瞬态时间内操作，以便为输入级电路提供补偿电流。 当驱动电压处于非瞬时时间时，电流镜开关电路关闭电流镜电路。

公开(公告)号：US09041639B2

公开(公告)日：2015-05-26

申请号：US14269218

申请日：2014-05-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Kuang-Feng Sung

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3688 ,  G09G2330/021

Abstract: The present disclosure provides a driving device for driving a liquid crystal display (LCD) device. The driving device comprises a plurality of first charge sharing switches and a plurality of second charge sharing switches. Each of the plurality of first charge sharing switches is individually coupled between two adjacent odd data channels of a plurality of data channels. Each of the plurality of second charge sharing switches is individually coupled between two adjacent even data channels of the plurality of data channels.

Abstract translation: 本公开提供了一种用于驱动液晶显示（LCD）装置的驱动装置。 驱动装置包括多个第一电荷共享开关和多个第二电荷共享开关。 多个第一电荷共享开关中的每一个单独耦合在多个数据信道的两个相邻的奇数数据信道之间。 多个第二电荷共享开关中的每一个单独地耦合在多个数据信道的两个相邻偶数数据信道之间。

公开(公告)号：US20140125414A1

公开(公告)日：2014-05-08

申请号：US13776732

申请日：2013-02-26

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ji-Ting Chen

IPC: H03F3/45

CPC classification number: H03F3/45224

Abstract: An operational amplifier circuit includes an output stage circuit. The output stage circuit includes a first and a second output transistors, a capacitor unit, and a switch unit. A drain of the first output transistor is coupled to a drain of the second output transistor via an output terminal of the output stage circuit. The switch unit is coupled between gates of the first and the second output transistors and coupled to a first terminal of the capacitor unit. A second terminal of the capacitor unit is coupled to the output terminal of the output stage circuit. The switch unit determines to conduct a signal transmission path between the gate of the first output transistor and the first terminal of the capacitor unit or conduct a signal transmission path between the gate of the second output transistor and the first terminal of the capacitor unit according to a control signal.

Abstract translation: 运算放大器电路包括输出级电路。 输出级电路包括第一和第二输出晶体管，电容器单元和开关单元。 第一输出晶体管的漏极经由输出级电路的输出端耦合到第二输出晶体管的漏极。 开关单元耦合在第一和第二输出晶体管的栅极之间并耦合到电容器单元的第一端。 电容器单元的第二端子耦合到输出级电路的输出端子。 开关单元确定在第一输出晶体管的栅极和电容器单元的第一端之间进行信号传输路径，或者根据第二输出晶体管的栅极与电容器单元的第一端之间的信号传输路径 一个控制信号。

公开(公告)号：US20140085010A1

公开(公告)日：2014-03-27

申请号：US13727622

申请日：2012-12-27

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ji-Ting Chen

IPC: H03F3/68

CPC classification number: H03F3/68 ,  H03F3/45183 ,  H03M1/00

Abstract: An operational amplifier module including an operational amplifier circuit and a comparator circuit is provided. The operational amplifier circuit includes an input stage circuit and an output stage circuit. The input stage circuit receives an input signal. The output stage circuit is coupled to the input stage circuit for enhancing the driving capability of the input signal. The comparator circuit is coupled to the output stage circuit for receiving the input signal. The comparator circuit determines whether the input signal changes so as to output an enable control signal to the output stage circuit to enhance the driving capability of the operational amplifier circuit. Furthermore, a method for enhancing the driving capability of the foregoing operational amplifier circuit is also provided.

Abstract translation: 提供了包括运算放大器电路和比较器电路的运算放大器模块。 运算放大器电路包括输入级电路和输出级电路。 输入级电路接收输入信号。 输出级电路耦合到输入级电路，以增强输入信号的驱动能力。 比较器电路耦合到输出级电路以接收输入信号。 比较器电路确定输入信号是否改变以便向输出级电路输出使能控制信号，以增强运算放大器电路的驱动能力。 此外，还提供了一种用于增强前述运算放大器电路的驱动能力的方法。

公开(公告)号：US20140077880A1

公开(公告)日：2014-03-20

申请号：US13776734

申请日：2013-02-26

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ji-Ting Chen

IPC: H03F3/45

CPC classification number: H03F3/45076 ,  H03F3/45475 ,  H03F2203/45248

Abstract: An operational amplifier module including an operational amplifier circuit, a rate-increasing circuit and an overdriving circuit is provided. The operational amplifier switches an input voltage to an output voltage and outputs the switched output voltage. The rate-increasing circuit receives the input voltage and the output voltage and increases the rate of switching the input voltage to the output voltage according to the difference between the input voltage and the output voltage. The overdriving circuit provides an overdriving voltage to the rate-increasing circuit and the operational amplifier circuit during an overdriving period according to a selection signal. The level of the overdriving voltage is higher or lower than the levels of the input voltage and the output voltage. Furthermore, a method for increasing the slew rate of the operational amplifier circuit is provided.

Abstract translation: 提供了包括运算放大器电路，增速电路和过驱动电路的运算放大器模块。 运算放大器将输入电压切换到输出电压并输出开关输出电压。 增速电路接收输入电压和输出电压，并根据输入电压和输出电压之间的差异增加输入电压切换到输出电压的速率。 过驱动电路根据选择信号在过驱动期间向增速电路和运算放大器电路提供过驱动电压。 过驱动电平的电平高于或低于输入电压和输出电压的电平。 此外，提供了一种用于增加运算放大器电路的转换速率的方法。

公开(公告)号：US20180239884A1

公开(公告)日：2018-08-23

申请号：US15436875

申请日：2017-02-20

Applicant: NOVATEK Microelectronics Corp.

Inventor： Sheng-Ruei Hsu ,  Ji-Ting Chen

IPC: G06F21/32 ,  G06F3/044 ,  G06K9/00

Abstract: The present invention discloses a method of finger touch authentication through a fingerprint sensor. The method includes obtaining a plurality of touch operations through the fingerprint sensor, detecting a pattern of the plurality of touch operations; comparing the pattern with a registered pattern to generate a comparison result, and authenticating the plurality of touch operations on the basis of the comparison result, wherein the pattern indicates at least one feature, and the fingerprint sensor is capable of authenticating a fingerprint of a user after or before the finger touch authentication.

公开(公告)号：US09774346B2

公开(公告)日：2017-09-26

申请号：US14876842

申请日：2015-10-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: G09G3/20 ,  H03M1/76 ,  G09G3/36

CPC classification number: H03M1/76 ,  G09G3/3685 ,  G09G3/3696 ,  G09G2310/027

Abstract: A digital-to-analog convertor for a driving module of a display device is disclosed. The digital-to-analog convertor includes a plurality of switches, forming a tree structure with a plurality of stages for outputting one of a plurality of gamma voltages to an output end according to a plurality of bits of a digital input signal; and a bypass unit, coupled between a first output end of a first switch in the plurality of switches and the output end for adjusting a connection between the first output end and the output end according to a most significant bit in among the plurality of bits and the bits between the most significant bit and a first bit controlling the first switch in among the plurality of bits.

公开(公告)号：US08890614B2

公开(公告)日：2014-11-18

申请号：US13776734

申请日：2013-02-26

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: H03F3/45

CPC classification number: H03F3/45076 ,  H03F3/45475 ,  H03F2203/45248

Abstract: An operational amplifier module including an operational amplifier circuit, a rate-increasing circuit and an overdriving circuit is provided. The operational amplifier switches an input voltage to an output voltage and outputs the switched output voltage. The rate-increasing circuit receives the input voltage and the output voltage and increases the rate of switching the input voltage to the output voltage according to the difference between the input voltage and the output voltage. The overdriving circuit provides an overdriving voltage to the rate-increasing circuit and the operational amplifier circuit during an overdriving period according to a selection signal. The level of the overdriving voltage is higher or lower than the levels of the input voltage and the output voltage. Furthermore, a method for increasing the slew rate of the operational amplifier circuit is provided.

Abstract translation: 提供了包括运算放大器电路，增速电路和过驱动电路的运算放大器模块。 运算放大器将输入电压切换到输出电压并输出开关输出电压。 增速电路接收输入电压和输出电压，并根据输入电压和输出电压之间的差异增加输入电压切换到输出电压的速率。 过驱动电路根据选择信号在过驱动期间向增速电路和运算放大器电路提供过驱动电压。 过驱动电平的电平高于或低于输入电压和输出电压的电平。 此外，提供了一种用于增加运算放大器电路的转换速率的方法。