公开(公告)号：US10311279B2

公开(公告)日：2019-06-04

申请号：US15299473

申请日：2016-10-21

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: H01L21/00 ,  G06K9/00 ,  G06F1/00

Abstract: A fingerprint sensor device and an operation method thereof are provided. The fingerprint sensor device includes a driving electrode, a driving circuit, a fingerprint sensing plate, a reading circuit and a determination circuit. The driving circuit applies a driving signal to an object through the driving electrode. The fingerprint sensing plate has sensing electrodes configured to sense the object. The reading circuit reads the driving signal through the fingerprint sensing plate. During a period between a rising edge time point and its adjacent falling edge time point of the driving signal, the reading circuit respectively samples the driving signal in at least two different phases to obtain at least two sampling results and outputs a difference value of the at least two sampling results. The determination circuit checks the difference value to determine whether the object to be sensed is a real finger or a fake finger.

公开(公告)号：US20150235625A1

公开(公告)日：2015-08-20

申请号：US14702773

申请日：2015-05-04

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Kuang-Feng Sung

IPC: G09G5/18 ,  G09G3/36

CPC classification number: G09G5/18 ,  G09G3/3614 ,  G09G3/3685 ,  G09G3/3688 ,  G09G2330/021

Abstract: The present disclosure provides a driving device for driving a display device. The driving device includes a first charge sharing switch, a second charge sharing switch and one or more third charge sharing switches. The first charge sharing switch is coupled between two adjacent odd data channels of a plurality of data channels. The second charge sharing switch is coupled between two adjacent even data channels of the plurality of data channels. Each of the one or more third charge sharing switches is coupled between two adjacent ones of the plurality of data channels. A first charge sharing is performed when the first charge sharing switch is turned on.

Abstract translation: 本公开提供了一种用于驱动显示装置的驱动装置。 驱动装置包括第一电荷共享开关，第二电荷共享开关和一个或多个第三电荷共享开关。 第一电荷共享开关耦合在多个数据信道的两个相邻的奇数数据信道之间。 第二电荷共享开关耦合在多个数据信道的两个相邻偶数数据信道之间。 一个或多个第三电荷共享开关中的每一个耦合在多个数据信道中的两个相邻数据信道之间。 当第一电荷共享开关接通时，执行第一电荷共享。

公开(公告)号：US09112453B2

公开(公告)日：2015-08-18

申请号：US14014368

申请日：2013-08-30

Applicant: Novatek Microelectronics Corp.

Inventor： Pei-Ye Wang ,  Ji-Ting Chen

IPC: H03F1/14 ,  H03F3/16

CPC classification number: H03F3/16 ,  H03F3/45183

Abstract: An operational amplifier circuit including a main circuit, a compensation capacitor, a power circuit, and a set of switches is disclosed. The main circuit has an output terminal. The compensation capacitor has a first end connected to an internal node of the main circuit and a second end connected to the output terminal of the main circuit. The power circuit provides a current or a voltage as predetermined. The set of switches connects the power circuit to the compensation capacitor. When the main circuit is not in an output state, the set of switches is switched to allow the power circuit to provide the current or voltage to the compensation capacitor. When the main circuit is in the output state, the set of switches is switched to disconnect the power circuit from the compensation capacitor and allow the main circuit to return to an output circuit state and operate normally.

Abstract translation: 公开了一种包括主电路，补偿电容器，电源电路和一组开关的运算放大器电路。 主电路有一个输出端子。 补偿电容器具有连接到主电路的内部节点的第一端和连接到主电路的输出端子的第二端。 电源电路提供预定的电流或电压。 该组开关将电源电路连接到补偿电容器。 当主电路不处于输出状态时，开关组被切换以允许电源电路向补偿电容器提供电流或电压。 当主电路处于输出状态时，切换开关组，使电源电路与补偿电容断开，使主电路返回到输出电路状态并正常工作。

公开(公告)号：US08963638B2

公开(公告)日：2015-02-24

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：US08937510B2

公开(公告)日：2015-01-20

申请号：US13727622

申请日：2012-12-27

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: H03F3/68 ,  H03F3/45 ,  H03M1/00

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：US20180039816A1

公开(公告)日：2018-02-08

申请号：US15229126

申请日：2016-08-05

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: G06K9/00

CPC classification number: G06K9/00067 ,  G06K9/00013

Abstract: A reading device and a reading method for a fingerprint sensor are provided. The reading device includes a switching circuit, a plurality of analog front end (AFE) circuits and a calculation circuit. The switching circuit is coupled to a plurality of pixel units of the fingerprint sensor. The AFE circuits are coupled to the switching circuit. The calculation circuit is coupled to the AFE circuits for calculating a plurality of pixel data of the pixel units. For a first pixel unit among the pixel units, the calculation circuit reads the first pixel unit by using different AFE circuits among the AFE circuits, so as to obtain a plurality of first original sensing values of the first pixel unit. The calculation circuit calculates the pixel data of the first pixel unit according to the plurality of first original sensing values.

公开(公告)号：US09792843B2

公开(公告)日：2017-10-17

申请号：US13781777

申请日：2013-03-01

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen ,  Wei-Hsiang Hung

IPC: G09G3/00 ,  H02J4/00 ,  H04N5/14

CPC classification number: G09G3/00 ,  G09G2320/0276 ,  G09G2320/0626 ,  H02J4/00 ,  H04N5/148 ,  Y10T307/461

Abstract: A load driving apparatus for driving a plurality of loads is provided. The load driving apparatus includes an output stage module, a load driving module, and an output stage selection module. The output stage module includes a plurality of output stages. Each of the output stages is coupled to a corresponding one of the loads. The load driving module is coupled to the output stage module and outputs a driving signal to drive one of the loads through the output stage module. The output stage selection module is coupled between the output stage module and the load driving module and selects one of the output stages in the output stage module, so that the load driving module drives the load which is coupled to the selected output stage through the selected output stage. Furthermore, a grayscale voltage generating circuit including the foregoing load driving apparatus is also provided.

公开(公告)号：US09531336B2

公开(公告)日：2016-12-27

申请号：US14468338

申请日：2014-08-26

Applicant: Novatek Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: H03F3/45 ,  H03F3/30

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：US20160300524A1

公开(公告)日：2016-10-13

申请号：US14876842

申请日：2015-10-07

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ji-Ting Chen

IPC: G09G3/20 ,  H03M1/76

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.

Abstract translation: 公开了一种用于显示装置的驱动模块的数模转换器。 数模转换器包括多个开关，根据数字输入信号的多个位，形成具有多个级的树结构，用于将多个伽马电压中的一个输出到输出端; 以及旁路单元，其耦合在所述多个开关中的第一开关的第一输出端和所述输出端之间，用于根据所述多个位中的最高有效位来调整所述第一输出端与所述输出端之间的连接;以及 最高有效位之间的位和控制多个位之间的第一开关的第一位。

公开(公告)号：US09142181B2

公开(公告)日：2015-09-22

申请号：US13964121

申请日：2013-08-12

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chia-Hsun Kuo ,  Chia-Wei Su ,  Ji-Ting Chen ,  Shun-Hsun Yang ,  Wei-Hsiang Hung ,  Ying-Zu Lin ,  Li-Tang Lin

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021 ,  G09G2330/023

Abstract: A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level.

Abstract translation: 一种显示驱动器，包括：第一预定电压电平提供装置，用于提供包括至少一个第一预定电压电平的第一预定电压电平组; 第一图像数据提供装置，用于输出第一图像数据; 以及检测控制电路，用于根据第一图像数据的电压电平的绝对值和绝对值之间的关系来确定第一图像数据提供装置的输出端是否被预充电到第一预定电压电平 第一预定电压电平。