Display apparatus, display drive circuit and driving method of electronic paper display unit

    公开(公告)号:US11640801B2

    公开(公告)日:2023-05-02

    申请号:US17425044

    申请日:2021-01-13

    Abstract: The present disclosure relates to a display apparatus, a display drive circuit and a driving method of an electronic paper display unit, which relates to the field of display technology. The display drive circuit includes a display control circuit, the display control circuit includes a capacitor unit, a radio frequency circuit, a voltage collection circuit, and a control circuit. The radio frequency circuit includes an induction circuit and a communication circuit. The induction circuit can charge the capacitor unit in response to a radio frequency signal of the terminal device. The collection circuit can collect the voltage of the capacitor unit. The control circuit can perform the transmission action when the voltage of the capacitor unit reaches an operating threshold voltage of the electronic paper display unit; turn off the voltage collection circuit and the communication circuit after the transmission action is completed.

    Display panel including fluoro-polymeric layer

    公开(公告)号:US11581509B2

    公开(公告)日:2023-02-14

    申请号:US16930334

    申请日:2020-07-16

    Abstract: A display panel includes a light-emitting device on a substrate and an encapsulation structure on a light output surface on one side of the light-emitting device. The encapsulation structure includes a first inorganic layer and a fluoro-polymeric layer. Ductility and bending resistance of the fluoro-polymeric layer are greater than those of the first inorganic layer. Defects between the fluoro-polymeric layer and the first inorganic layer are fewer than those between the first inorganic layer and another layer.

    Display panel and display device
    65.
    发明授权

    公开(公告)号:US11501709B2

    公开(公告)日:2022-11-15

    申请号:US17552570

    申请日:2021-12-16

    Abstract: The embodiment of the present disclosure provides a display panel and a display device. The display panel includes: a first sub-pixel configured to display a first color, a second sub-pixel configured to display a second color, and a third sub-pixel configured to display a third color; when a picture displayed by the display panel is switched from a black picture to a picture having a maximum gray scale of the first color, the second color and the third color, respectively, a ratio of a brightness of a first frame of picture to a maximum value among brightness of stabilized several frames of pictures is a first initial frame brightness proportion, a second initial frame brightness proportion and a third initial frame brightness proportion, respectively; the first, second and third initial frame brightness proportions have a Max-Min less than or equal to a threshold.

    Optical communication drive circuit and method, optical communication transmitter and system, and vehicle

    公开(公告)号:US11474556B2

    公开(公告)日:2022-10-18

    申请号:US16769297

    申请日:2019-03-29

    Abstract: The present disclosure provides an optical communication drive circuit and method, an optical communication transmitter, an optical communication system, and a vehicle. The optical communication drive circuit includes a clock circuit and a modulation circuit. The clock circuit is configured to output a clock signal with an initial frequency signal as an input under control of information to be transmitted. The clock signal includes alternating first and second frequency signals, the first frequency signal and the second frequency signal having different frequencies and being generated based on the initial frequency signal; and the modulation circuit is configured to modulate an optical signal by the clock signal to obtain a modulated optical signal.

    Display substrate and display device

    公开(公告)号:US11362167B2

    公开(公告)日:2022-06-14

    申请号:US16913319

    申请日:2020-06-26

    Abstract: The present disclosure provides a display substrate, including a substrate, a first power line on the substrate, a second power line, and a plurality of pixel groups, each of which includes a plurality of pixels arranged in a first direction, the plurality of pixel groups are arranged in a second direction parallel to an extending direction of the first power line, the second direction is different from and intersects with the first direction, each of the plurality of pixels includes a light emitting unit having a first electrode and a second electrode, the first electrode of the light emitting unit is coupled to the first power line through an additional resistor with an additional resistance, and the second electrode of the light emitting unit is coupled to the second power line through an equivalent resistor with an equivalent resistance.

    A DIGITAL CLOCK CIRCUIT FOR GENERATING HIGH-RATIO FREQUENCY MULTIPLICATION CLOCK SIGNAL

    公开(公告)号:US20210119618A1

    公开(公告)日:2021-04-22

    申请号:US16975267

    申请日:2019-10-21

    Abstract: A digital clock circuit is provided. The digital clock circuit includes a first sub-circuit comprising a first digitally-controlled oscillator driven by a frequency control word to control a first output frequency synthesized from multiple first pulses, and a first frequency divider to generate a trigger signal having a frequency equal to 1/M of the first output frequency. The digital clock circuit also includes a second sub-circuit comprising a loop of feedback including a frequency detector to compare an input frequency with a feedback frequency, a controller to adjust the frequency control word, a second digitally-controlled oscillator driven by the frequency control word plus a constant to control a second output frequency synthesized from multiple second pulses induced by the trigger signal, and a second frequency divider to set the feedback frequency equal to 1/N of the second output frequency in the loop of feedback.

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