Acoustic transduction unit, manufacturing method thereof and acoustic transducer

    公开(公告)号:US11919039B2

    公开(公告)日:2024-03-05

    申请号:US17332884

    申请日:2021-05-27

    发明人: Tuo Sun

    IPC分类号: B06B1/00 B06B1/02

    CPC分类号: B06B1/0292

    摘要: An acoustic transduction unit is provided including: a first electrode on a base substrate, a support pattern on a side of the first electrode distal to the base substrate, a vibrating diaphragm pattern surrounded by the support pattern, the first electrode and the vibrating diaphragm pattern and on a side of the support pattern distal to the first electrode; and a second electrode on a side of the vibrating diaphragm pattern distal to the first electrode and opposite to the first electrode; and a first dielectric pattern at the bottom of the vibrating cavity; wherein a thickness of the first dielectric pattern gradually increases from a first vertex to an edge of the first dielectric pattern; and/or, a second dielectric pattern at the top of the vibrating cavity; wherein a thickness of the second dielectric pattern gradually increases from a second vertex to an edge of the second dielectric pattern.

    Liquid crystal antenna, method of driving the same, communication device

    公开(公告)号:US11387548B2

    公开(公告)日:2022-07-12

    申请号:US16623706

    申请日:2019-05-08

    发明人: Tuo Sun

    摘要: A liquid crystal antenna, a method of driving the same, and a communication device are provided. The liquid crystal antenna includes a first substrate and a second substrate opposite to each other; a liquid crystal layer between the first substrate and the second substrate; a first electrode on the first substrate and on a side of the first substrate facing the liquid crystal layer; a second electrode on the second substrate and on a side of the second substrate facing the liquid crystal layer, the second electrode being opposite to the first electrode; and a control circuit configured to output a first voltage signal to the first electrode and output a second voltage signal to the second electrode, wherein the first voltage signal is opposite in polarity to the second voltage signal.

    Pixel driving circuit, driving method, array substrate and display apparatus

    公开(公告)号:US10657883B2

    公开(公告)日:2020-05-19

    申请号:US14648670

    申请日:2014-09-30

    摘要: There provide a pixel driving circuit and driving method thereof, an array substrate and display apparatus, wherein the pixel driving circuit comprises: a data line; a gate line; a first power supply line; a second power supply line; a light emitting device connected to the second power supply line; a driving transistor connected to the first power supply line; a storage capacitor having a first terminal connected to a gate of the driving transistor and configured to transfer information including the data voltage to the gate of the driving transistor; a resetting unit configured to reset a voltage across the storage capacitor as a predetermined signal voltage; a data writing unit configured to write information including the data voltage into the second terminal of the storage capacitor; a compensating unit configured to write information including a threshold voltage of the driving transistor and information of the first power supply voltage into the first terminal of the storage capacitor; and a light emitting control unit connected to the storage capacitor, the driving transistor and the light emitting device, and configured to control the driving transistor to drive the light emitting device to emit light.

    Display substrate and driving method thereof, display device

    公开(公告)号:US10373547B2

    公开(公告)日:2019-08-06

    申请号:US15325053

    申请日:2016-02-16

    发明人: Tuo Sun Zhanjie Ma

    摘要: Embodiments of the disclosure provide a display substrate and a driving method thereof, as well as a display device. The display substrate comprises a plurality of select switch arrays and a plurality of selecting control circuits formed on the base substrate. Each select switch array comprises a plurality of select switches, a first terminal of each select switch being connected to a corresponding data line, a second end of each select switch being connected to a same data voltage input terminal, a control terminal of each select switch being connected to a same selecting control circuit. Each data line is connected with two columns of pixels, and the gate lines connected with the two columns of pixels are different. Each selecting control circuit is connected to a plurality of selecting control signal input terminals and a corresponding select switch array.

    Method for preparing graphene, thin-film transistor, array substrate, and display panel

    公开(公告)号:US10224205B2

    公开(公告)日:2019-03-05

    申请号:US14316220

    申请日:2014-06-26

    发明人: Tuo Sun

    摘要: This present invention discloses a method for preparing graphene, a thin-film transistor, an array substrate, and a display panel. Above all, an amorphous carbon thin film and a catalyst metal thin film are formed on a base substrate in this order. Then, the catalyst metal thin film and the amorphous carbon thin film are allowed to form a eutectic at a high temperature caused by an excimer laser in a manner of excimer laser irradiation. When the irradiation is finished, the surface temperature of the catalyst metal thin film is drastically decreased, allowing most of carbon atoms of the amorphous carbon thin film to be locked in the catalyst metal thin film and only a small amount of carbon atoms to be precipitated on the lower surface of the catalyst metal thin film, so that a graphene thin film is formed. Since the above described the method employs excimer laser irradiation to grow a graphene thin film, and the excimer laser has minor effect on other film layers located under the graphene thin film, graphene can be formed on the base substrate without a transfer process. Therefore, damage and contamination of graphene thin film caused by the transfer process are prevented and properties of graphene thin film are ensured.

    Pixel circuit, driving method, organic electroluminescent display panel, and display device

    公开(公告)号:US10170050B2

    公开(公告)日:2019-01-01

    申请号:US15320407

    申请日:2015-09-18

    发明人: Tuo Sun

    摘要: A pixel circuit, a driving method, an organic electroluminescent display panel, and a display device are provided. The pixel circuit comprises a driving controller, a light emitter, a light emitting controller, an initialization controller, and a compensation controller. The pixel circuit can compensate the drift of the threshold voltage of the driving controller by using the preset threshold voltage which is written by the compensation controller and has a same threshold voltage as the driving controller. The driving current by which the driving controller drives the light emitter to emit light is only dependent on the voltage of the data signal and the voltage of the initialization signal, and independent on the threshold voltage of the driving controller, thus preventing the threshold voltage of the driving controller from affecting the light emitter.