Abstract: A display panel, a fabricating method and a control method thereof and a display device are provided. Display panel includes a display assembly and sound generation assemblies. Display assembly includes a display assembly substrate and pixel components disposed on a side of display assembly substrate. Each sound generation assembly includes a vibrating membrane, an exciter, and a support structure. Support structure is disposed on a side of vibrating membrane and has a cavity. Exciter includes a motion part in contact with vibrating membrane and a drive part disposed in cavity. Drive part drives motion part to vibrate, and motion part vibrates to drive vibrating membrane to vibrate. Display assembly substrate and vibrating membrane are the same structure, and pixel components are disposed on a side of vibrating membrane facing away from support structure. Display device includes the display panel above.

Abstract: A display device and an operation method of the display device are provided in the present disclosure. The display device includes a display screen a sound-generation driving module, and further includes an acoustic scanning module, arranged on a non-display side of the display screen and configured to determine a spatial contour of a space where the display device is located through acoustic scanning; a viewer position detection module, configured to detect viewer coordinates in the space where the display device is located; and a control module, configured to control the sound-generation driving module to generate sound in accordance with the spatial contour and the viewer coordinates.

Abstract: A PDCCH candidate allocation method for cross-carrier scheduling and a device are provided. This method includes: when configuration of a first cell includes search space set configuration or PDCCH candidate quantity configuration thereof, determining a PDCCH candidate quantity and/or a monitoring parameter thereof based on the configuration thereof; or when a first cell has no PDCCH configuration and configuration of a second cell includes only PDCCH configuration thereof, determining a PDCCH candidate quantity and/or a monitoring parameter of the first cell based on the PDCCH configuration of the second cell; or when a first cell has no PDCCH configuration and PDCCH configuration of a second cell includes search space set configuration or PDCCH candidate quantity configuration of the first cell, determining a PDCCH candidate quantity and/or a monitoring parameter of the first cell based on the search space set configuration or PDCCH candidate quantity configuration of the first cell.

Abstract: An exemplary embodiment of the present disclosure provides a membrane including a supporting base layer, which can be permeable, and a dual layer oxygen barrier film disposable over the supporting base layer. The supporting barrier film can include a polymeric or paper-based material. The dual layer oxygen barrier film can include a chitin material and a cellulosic material.

Abstract: A circuit and a method for detecting a current zero-crossing point, and a circuit and method for detecting a load voltage are disclosed. The circuit for detecting current zero-crossing point includes: a load power supply circuit, a voltage-dividing resistor, a transistor switch, a zero-crossing detection circuit; the load power supply circuit includes: a load, a diode, and a transformer; one end of a primary winding of the transformer is connected with the operating voltage input terminal, the other end of the primary winding of the transformer is connected with a first end of the transistor switch and a first end of the voltage-dividing resistor, a second end of the voltage-dividing resistor and a second end of the transistor switch are connected with the ground, the load voltage is controlled by the transistor switch.

Abstract: A circuit and a method for detecting a current zero-crossing point, and a circuit and method for detecting a load voltage are disclosed. The circuit for detecting current zero-crossing point includes: a load power supply circuit, a voltage-dividing resistor, a transistor switch, a zero-crossing detection circuit; the load power supply circuit includes: a load, a diode, and a transformer; one end of a primary winding of the transformer is connected with the operating voltage input terminal, the other end of the primary winding of the transformer is connected with a first end of the transistor switch and a first end of the voltage-dividing resistor, a second end of the voltage-dividing resistor and a second end of the transistor switch are connected with the ground, the load voltage is controlled by the transistor switch.

Abstract: A circuit and a method for detecting a current zero-crossing point, and a circuit and method for detecting a load voltage are disclosed.

Abstract: A circuit and a method for detecting a current zero-crossing point, and a circuit and method for detecting a load voltage are disclosed.

Abstract: A system and method for dimming an LED lighting installation using an AC power source are disclosed. The disclosed LED lighting system includes an LED light having one or more LEDs, a dimming control module for controlling and adjusting brightness level of the LED light toward a desired target brightness, and a user-operated lighting control device including a power on/off switch and a dimmer. The power on/off switch passes or interrupts the AC power fed into the dimming control module. A series of turned-off operations of the power on/off switch of transitory duration causes LED light target brightness levels to be progressively increasing or decreasing leading to a desired target brightness. Operations of the dimmer result in a target brightness setting signal being generated for the dimming control module, representative of a desired target brightness as well.

Abstract: A system and method for dimming an LED lighting installation using an AC power source are disclosed. The disclosed LED lighting system includes an LED light having one or more LEDs, a dimming control module for controlling and adjusting brightness level of the LED light toward a desired target brightness, and a user-operated lighting control device including a power on/off switch and a dimmer. The power on/off switch passes or interrupts the AC power fed into the dimming control module. A series of turned-off operations of the power on/off switch of transitory duration causes LED light target brightness levels to be progressively increasing or decreasing leading to a desired target brightness. Operations of the dimmer result in a target brightness setting signal being generated for the dimming control module, representative of a desired target brightness as well.