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    DISPLAY DRIVING CIRCUIT, DRIVING METHOD THEREOF AND DISPLAY APPARATUS
    41.
    发明申请
    DISPLAY DRIVING CIRCUIT, DRIVING METHOD THEREOF AND DISPLAY APPARATUS 有权
    显示驱动电路，其驱动方法和显示设备

    公开(公告)号：US20150379949A1

    公开(公告)日：2015-12-31

    申请号：US14417337

    申请日：2014-05-28

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yanfeng Wang ,  Yan He ,  Yanan Jia ,  Guobing Yin

    IPC: G09G3/36

    CPC classification number: G09G3/3648 ,  G09G3/3611 ,  G09G3/3674 ,  G09G3/3685 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2370/08

    Abstract: Provided are a display driving circuit, a driving method thereof and a display apparatus. The display driving circuit comprises a timing sequence control unit (20) and at least one signal driving unit (30) connected to the timing sequence control unit (20). The timing sequence control unit (20) comprises a receiving module (201), a processing module (202) and a sending module (203). The receiving module (201) receives feedback signals (FB) outputted from respective signal driving units (30) to the timing sequence control unit (20); the processing module (202) obtains a maximum delay time after comparing signal delay time of the signal driving units (30) according to the feedback signals (FB); the sending module (203) sends a second clock signal (CLK2) to respective signal driving units (30) according to the maximum delay time such that respective signal driving units (30) receive the second clock signal (CLK2) simultaneously. Therefore, delay errors of the display driving signals can be eliminated, and distortion of the display image can be avoided.

    Abstract translation: 提供了显示驱动电路，其驱动方法和显示装置。 显示驱动电路包括定时序列控制单元（20）和连接到时序控制单元（20）的至少一个信号驱动单元（30）。 定时序列控制单元（20）包括接收模块（201），处理模块（202）和发送模块（203）。 接收模块（201）从各个信号驱动单元（30）接收从定时序列控制单元（20）输出的反馈信号（FB）。 在根据反馈信号（FB）比较信号驱动单元（30）的信号延迟时间之后，处理模块（202）获得最大延迟时间; 发送模块（203）根据最大延迟时间向相应的信号驱动单元（30）发送第二时钟信号（CLK2），使得各个信号驱动单元（30）同时接收第二时钟信号（CLK2）。 因此，可以消除显示驱动信号的延迟误差，并且可以避免显示图像的失真。

    Pattern identification device and display apparatus
    42.
    发明授权
    Pattern identification device and display apparatus 有权

    公开(公告)号：US11769344B2

    公开(公告)日：2023-09-26

    申请号：US17804474

    申请日：2022-05-27

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Pinchao Gu ,  Haisheng Wang ,  Chunwei Wu ,  Yingming Liu ,  Rui Xu ,  Changfeng Li ,  Lijun Zhao ,  Yanan Jia ,  Yuzhen Guo ,  Yunke Qin

    IPC: G06V10/147 ,  H01L27/32 ,  G06V10/145 ,  G06V40/13 ,  H10K59/65 ,  G06V40/16

    CPC classification number: G06V40/1318 ,  H10K59/65 ,  G06V40/16

    Abstract: A device for identifying a pattern over a first surface includes a photosensitive layer, and a light-guiding layer disposed between the photosensitive layer and the first surface. The photosensitive layer includes a plurality of photosensitive elements, each configured to convert incident light into an electrical signal. The light-guiding layer includes a plurality of light-guiding units, each positionally corresponding to one of the plurality of photosensitive elements. Each light-guiding unit include a plurality of light-transmitting portions, each configured to guide a light beam reflected from a feature of the pattern positionally corresponding thereto to transmit therethrough and reach one of the plurality of photosensitive elements corresponding to the each of the plurality of light-guiding units. The device can be used for identification of fingerprint, as well as other biometric or non-biometric features, and has a reduced thickness and an improved accuracy for pattern identification.

    Display panel, display device and method for displaying Braille information
    43.
    发明授权
    Display panel, display device and method for displaying Braille information 有权

    公开(公告)号：US11189194B2

    公开(公告)日：2021-11-30

    申请号：US16080618

    申请日：2018-02-02

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Changfeng Li ,  Haisheng Wang ,  Yingming Liu ,  Xiaoliang Ding ,  Rui Xu ,  Pengpeng Wang ,  Wei Liu ,  Yuzhen Guo ,  Pengcheng Lu ,  Yanan Jia ,  Pinchao Gu

    IPC: G09B21/00 ,  G09G3/00

    Abstract: The embodiments of the present disclosure provide a display panel, a display device, and a method for displaying Braille information. The display panel includes a plurality of scan lines, data lines, and display circuits arranged at intersections of the plurality of scan lines and the plurality of data lines. The display circuit includes a switch configured to be turned on or off according to a scan signal from the scan line, and a dot element coupled to the switch. The dot element includes a substrate, an electrode provided on the substrate, a thermosensitive layer provided on the electrode, and a dot key arranged on the thermosensitive layer. The electrode is coupled to the switch, and configured to be applied with a data signal from the data line when the switch is turned on. The thermosensitive layer is configured to be heated by the electrode to protrude the dot.

    Device for temperature detection
    45.
    发明授权
    Device for temperature detection 有权

    公开(公告)号：US10914642B2

    公开(公告)日：2021-02-09

    申请号：US15999745

    申请日：2018-01-02

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Lijun Zhao ,  Haisheng Wang ,  Yingming Liu ,  Rui Xu ,  Changfeng Li ,  Yanan Jia ,  Pengpeng Wang ,  Chih Jen Cheng

    IPC: G01K7/00 ,  G01K7/01 ,  H03K5/134 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786 ,  H03K5/00

    Abstract: The embodiments of the present disclosure relate to a device for temperature detection, including a delay unit including an odd number of inverters coupled end to end, a switching transistor having a control electrode coupled to an output end of the delay unit, a first electrode coupled to an operating voltage node of the device, and a second electrode coupled to an input end of the delay unit, a first capacitor having a first end coupled to the input end of the delay unit, and a second end coupled to the first electrode of the switching transistor or a ground node of the device, and a temperature sensitive transistor having a control electrode coupled to a bias voltage end of the device, a first electrode coupled to the input end of the delay unit, and a second electrode coupled to the ground node of the device.

    Optical fingerprint recognition apparatus and display panel
    49.
    发明授权
    Optical fingerprint recognition apparatus and display panel 有权

    公开(公告)号：US10664680B2

    公开(公告)日：2020-05-26

    申请号：US15759755

    申请日：2017-09-18

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Rui Xu ,  Xue Dong ,  Haisheng Wang ,  Chun-Wei Wu ,  Yingming Liu ,  Changfeng Li ,  Yunke Qin ,  Xiaoliang Ding ,  Pinchao Gu ,  Lijun Zhao ,  Yanan Jia ,  Yuzhen Guo ,  Jing Lv ,  Xiaochuan Chen

    IPC: G06K9/00 ,  G02B27/30

    Abstract: The embodiments of the present disclosure provide an optical fingerprint recognition apparatus and a display panel. The apparatus comprises: a light emitting structure (1), a collimating structure (2) and a plurality of photosensitive sensors (3); the light emitting structure (1) is used for generating detecting light; the collimating structure (2) is used for filtering the detecting light reflected by a finger, such that light with a scattering angle in a predetermined range transmits through the collimating structure (2); the photosensitive sensors (3) are used for receiving the light transmitted through the collimating structure (2) and acquiring fingerprint information according to the received light. The embodiments of the present disclosure are used for manufacturing a display panel. The present disclosure can enhance accuracy of the recognized fingerprint information during an optical fingerprint recognition process.

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