IMAGE PROCESSING METHOD FOR SCREEN INNER HOLE OF DISPLAY DEVICE

    公开(公告)号:US20210334936A1

    公开(公告)日:2021-10-28

    申请号:US16476945

    申请日:2019-04-19

    Inventor: Chuan SHUAI

    Abstract: An image processing method for a screen inner hole of a display device is provided, including steps as follows: determining coordinates at a center and a radius r of the screen inner hole, and drawing a circle with the radius r to obtain a pixel range of an inner hole area, and calculating a pixel variance of the pixel range; analyzing an image configuration in the inner hole area and a peripheral area around the inner hole area, and determining whether key information is in the inner hole area; locating and determining a range of the inner hole area and a range of the peripheral area; and separately calculating, in the inner hole area and in the peripheral area, a pixel mean and a pixel variance.

    ELECTROMAGNETIC TOUCH SCREEN AND ELECTROMAGNETIC TOUCH DEVICE

    公开(公告)号:US20250044908A1

    公开(公告)日:2025-02-06

    申请号:US18921010

    申请日:2024-10-21

    Abstract: The present disclosure provides an electromagnetic touch screen and an electromagnetic touch device including the electromagnetic touch screen. The electromagnetic touch scree includes receiving coils and transmitting coils. The transmitting coils are correspondingly arranged in a peripheral area around the receiving coils. The transmitting coils are configured to transmit transmitting signals through which a first magnetic field is generated to charge the stylus before a touch operation, and the receiving coils are configured to generate receiving signals during the touch operation.

    DISPLAY PANEL AND DISPLAY DEVICE
    4.
    发明公开

    公开(公告)号:US20240127623A1

    公开(公告)日:2024-04-18

    申请号:US17297545

    申请日:2021-05-18

    CPC classification number: G06V40/1329 G02B27/30 G06V40/1318

    Abstract: The present application discloses a display panel and a display device. The display panel includes a fingerprint recognition area. The display panel includes a cover plate and an optically transparent layer. The optically transparent layer at least covers a portion of the cover plate located in the fingerprint recognition area. A refractive index of the optically transparent layer is greater than a refractive index of air and less than a refractive index of a finger. A thickness of the optically transparent layer is an even multiple of a half-wavelength of a fingerprint recognition light ray. Half-wave loss and interference of light are used to improve fingerprint recognition performance.

    DISPLAY PANEL, DRIVING METHOD THEREOF, AND ELECTRONIC TERMINAL

    公开(公告)号:US20240402849A1

    公开(公告)日:2024-12-05

    申请号:US18560150

    申请日:2023-06-29

    Abstract: The present disclosure provides a display panel and a driving method thereof, and an electronic terminal. The display panel includes a drive circuit. The drive circuit includes a timing circuit configured to provide a frame synchronization signal having a frame period (including a plurality of sub-periods). Each sub-period includes a sub-charging time period and a sub-blanking time period. In a first type of frame period, a gate drive circuit and an electromagnetic touch drive circuit in the drive circuit are respectively configured to provide a display pulse during the sub-charging time period and provide an electromagnetic touch scanning signal during the sub-blanking time period.

    ELECTROMAGNETIC TOUCH SCREEN AND ELECTROMAGNETIC TOUCH DEVICE

    公开(公告)号:US20240126398A1

    公开(公告)日:2024-04-18

    申请号:US18082010

    申请日:2022-12-15

    CPC classification number: G06F3/046 G06F3/03545 G06F3/0412

    Abstract: An electromagnetic touch device and an electromagnetic touch screen are provided. The electromagnetic touch device includes the electromagnetic touch screen. The electromagnetic touch screen is coupled with a stylus. The electromagnetic touch screen includes transmitting coils and receiving coils. The transmitting coils are correspondingly arranged in a peripheral area around the receiving coils. During interaction between the stylus and the electromagnetic touch screen, the transmitting coils transmit transmitting signals to generate a first magnetic field through which the stylus is charged. When a touch operation is performed, the receiving coils generate receiving signals according to a second magnetic field generated by the stylus, a touch point of the stylus is obtained according to the receiving signals.

    UNDER-SCREEN FINGERPRINT IDENTIFICATION DEVICE AND DISPLAY DEVICE

    公开(公告)号:US20230177864A1

    公开(公告)日:2023-06-08

    申请号:US16966236

    申请日:2019-11-11

    Inventor: Chuan SHUAI

    CPC classification number: G06V40/1318 H04M1/0266

    Abstract: Embodiments of the present disclosure provide an under-screen fingerprint identification device and a display device. The under-screen fingerprint identification device comprises a light guiding plate comprising a light guiding region, wherein the light guiding region is disposed in a display area of the display panel, and a light emitting element disposed under the light guiding region. Wherein the light emitting element comprises a plurality of light emitting pixel columns, the plurality of light emitting pixel columns form a light emitting pixel region as a light source for fingerprint identification, each of the plurality of light emitting pixel columns comprises a plurality of sensors.

    UNDER-SCREEN FINGERPRINT IDENTIFICATION DEVICE, DISPLAY PANEL, AND DISPLAY DEVICE

    公开(公告)号:US20210406507A1

    公开(公告)日:2021-12-30

    申请号:US16771758

    申请日:2019-11-11

    Inventor: Chuan SHUAI

    Abstract: The present disclosure provides an under-screen fingerprint identification device, a display panel, and a display device. In the present disclosure, light control films are added to pixel opening areas to distinguish fingerprint identification light from normal display light, and image sensors are set to only identify invisible light, so invisible light can be transmitted to the image sensors only through pinholes in a pinhole layer, thereby improving a signal-to-noise ratio of a fingerprint identification signal.

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