Phased-array antenna, display panel, and display device

    公开(公告)号:US12142838B2

    公开(公告)日:2024-11-12

    申请号:US16641933

    申请日:2018-12-13

    Abstract: Embodiments of the present disclosure relate to a phased-array antenna, a display panel, and a display device. The phased-array antenna includes a first substrate and a second substrate arranged oppositely, and a plurality of phased-array elements located between the first substrate and the second substrate. At least one of the phased-array elements includes a first electrode, a second electrode arranged opposite to the first electrode, a voltage-controlled phase shift material located between the first electrode and the second electrode, wherein the first electrode is configured to receive a bias signal for controlling the voltage-controlled phase shift material, and the second electrode serves as a ground electrode, and a microstrip line located at a side of the first electrode far away from the voltage-controlled phase shift material and electrically insulated from the first electrode, wherein the microstrip line is configured to receive or transmit a transmission signal.

    Feeding structure, microwave radio frequency device and antenna

    公开(公告)号:US11949142B2

    公开(公告)日:2024-04-02

    申请号:US17280873

    申请日:2020-08-13

    CPC classification number: H01P1/18 H01P1/20 H01P5/12

    Abstract: A feeding structure is provided, which includes first and second substrates opposite to each other, a reference electrode, and a dielectric layer between the first and second substrates. The first substrate includes a coupling branch and a delay branch, which are respectively connected to two output terminals of a power divider and form a current loop with the reference electrode, on a side of a first base plate proximal to the dielectric layer. The second substrate includes a receiving electrode on a side of a second base plate proximal to the dielectric layer, the receiving electrode and the coupling branch form a coupling structure, and their orthographic projections on the first base plate at least partially overlap each other. A length of an orthographic projection of both the coupling branch and the receiving electrode on the first base plate is different from a length of the delay branch.

    Liquid crystal phase shifter and antenna

    公开(公告)号:US11870122B2

    公开(公告)日:2024-01-09

    申请号:US17309614

    申请日:2020-10-13

    CPC classification number: H01P1/18 H01P1/184 H01P3/08 H01Q3/36

    Abstract: A liquid crystal phase shifter and an antenna are provided. The liquid crystal phase shifter includes: first and second substrates opposite to each other, a liquid crystal layer, a first electrode, and a second electrode that are between the first and second substrates, a first shielding electrode on a side of the first substrate distal to the liquid crystal layer, and a second shielding electrode on a side of the second substrate distal to the liquid crystal layer. The first and second electrodes generate an electric field when being provided with different voltages, respectively, to change a dielectric constant of the liquid crystal layer so as to adjust a phase shifting degree of a microwave signal. The first and second shielding electrodes shield radiation generated by the first and second electrodes when the different voltages are applied to the first and second electrodes, respectively.

    PHASE-SHIFT UNIT, PHASE SHIFTER AND ANTENNA

    公开(公告)号:US20220158347A1

    公开(公告)日:2022-05-19

    申请号:US17649708

    申请日:2022-02-02

    Abstract: A phase-shift unit includes: a first substrate and a second substrate provided opposite to each other; a medium layer provided between the first substrate and the second substrate; a microstrip line disposed at a side of the second substrate facing towards the first substrate; and a grounding layer provided at a side of the first substrate facing towards the second substrate and formed with a via hole; wherein a projection of the via hole onto the second substrate and a projection of the microstrip line onto the second substrate have an overlapped area therebetween; and wherein the via hole is configured to feed a phase-shifted microwave signal out of the phase-shift unit, or feed a microwave signal into the phase-shift unit such that the microwave signal is phase-shifted.

    Antenna structure and modulation method therefor

    公开(公告)号:US11283185B2

    公开(公告)日:2022-03-22

    申请号:US16609822

    申请日:2019-04-03

    Abstract: An antenna structure and a modulation method therefor are provided. The antenna structure includes a radiation patch, a radio-frequency port, a first signal line, a second signal line, a power divider, and a first phase modulator. The radiation patch includes a first feed point and a second feed point. One end of the first signal line is connected to the first feed point. One end of the second signal line is connected to the second feed point. The power divider is separately connected to the radio-frequency port, the other end of the first signal line, and the other end of the second signal line, and is configured to allocate electromagnetic waves of the radio-frequency port to the first signal line and the second signal line; and the first phase modulator is configured to modulate the phase of the electromagnetic waves of the first signal line.

    Pixel circuit, method of driving the same, aging detection method and display panel

    公开(公告)号:US11263937B2

    公开(公告)日:2022-03-01

    申请号:US17010613

    申请日:2020-09-02

    Abstract: A pixel circuit includes a data written-in sub-circuit, a driving sub-circuit, a threshold compensation sub-circuit, a light-emitting element, a sensing sub-circuit and a first light-emission control sub-circuit. The driving sub-circuit is configured to control a driving current for driving the light-emitting element to emit light. The data written-in sub-circuit writes threshold compensation information into a second terminal of the driving sub-circuit at a compensation stage. The threshold compensation sub-circuit stores a data signal and adjusts a voltage at the second terminal of the driving sub-circuit in a coupled manner. The sensing sub-circuit writes a sensing voltage into a first terminal and the second terminal of the driving sub-circuit at a display process, senses aging information of the light-emitting element during an aging detection process and transmits the aging information to the aging detection device.

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