Abstract: A display module includes a back plate, a light guide plate, a rubber frame and a display panel, the light guide plate is fixed on a bearing surface, a connecting line between two end portions of the bearing surface forms a first curve. The first curve includes a circular arc segment and a transition curve segment, and bends in a direction away from the display panel; the circular arc segment is located at the middle, at least one end of the circular arc segment is provided with the transition curve segment; the transition curve segment is located at a first position, the first position being a position of the bearing surface opposite to a second position, the second position being a position where light leaks from the display panel, the radius of curvature of the transition curve increases along a direction close to an end portion of the first curve.

Abstract: Provided are a method for driving a light-emitting substrate, a driving circuit and a display apparatus. The light-emitting substrate includes: at least one control region, which includes a plurality of light-emitting sub-regions, the light-emitting sub-region includes a plurality of light-emitting elements which are connected in series and/or in parallel; each light-emitting sub-regions includes a first signal end and a second signal end, in a same control region, the first signal ends of all the light-emitting sub-regions are electrically connected with each other, and the second signal ends of the different light-emitting sub-regions are independent of each other; the method includes: loading a first signal to the first signal ends in the control region; and loading second signals to the second signal ends of each of the plurality of the light-emitting sub-regions in the control region when a first duration is delayed after the first signal is provided.

Abstract: A curved optical plate includes a curved light exit surface including at least one curved edge and at least one uncurved edge, and at least one first side surface connected to the at least one uncurved edge of the light exit surface; a first side surface includes a first surface, and the first surface extends toward an interior of the curved optical plate.

Abstract: A PFC converter and a control method thereof are provided. The PFC converter includes a first bridge, an inductor, a second bridge and a control unit. The first bridge includes a first switch and a second switch connected in series. There is a first node between the first and second switches. Two terminals of the inductor are coupled to the first node and a first terminal of an AC power source respectively. The second bridge includes a third switch and a fourth switch connected in series. There is a second node between the third and fourth switches, and the second node is coupled to a second terminal of the AC power source. The control unit controls a ratio of a high level duration on the second node in every line frequency cycle to be smaller than (250/Vbus)2, where Vbus is an output voltage of the PFC converter.

Abstract: The invention discloses a system for hole making for an aircraft skin by normal positioning and locking. The hole-making system includes a posture adjustment part, a normal positioning and locking part and a hole-making execution part. This system solves the problems that the device in the prior art has high complexity and cumbersome positioning and does not adapt to complex curved surfaces, thereby failing to satisfy the needs of efficient hole making in different space states. In the present invention, the expansion of an outer expansion sleeve in a bottom sleeve locks a normal direction for hole making, thereby ensuring the positioning accuracy of the normal direction. An axial position is locked by the mutual cooperation of an axial positioning groove of the bottom sleeve and an axial positioning rib of the outer expansion sleeve. A hole-making auxiliary cylinder contracts to counteract part of an axial force for hole making.

Abstract: A transformer is disclosed, including a magnetic core, a bobbin, a primary winding wound around the bobbin, at least a first secondary winding and a second secondary winding and at least one turn of coil of the first secondary winding is adjacent to at least one turn of coil of the second secondary winding, and the first secondary winding and the second secondary winding are applied in a full-wave rectifier circuit. A leakage inductance groove is provided between a primary winding groove for winding the primary winding and a secondary winding groove for winding the secondary winding for isolating the primary winding and the secondary winding.

Abstract: A method of presenting a user interface object. The method includes providing data to a display panel of an electronic device having a memory and one or more processors to concurrently display a plurality of user interface objects in a user interface, the plurality of user interface objects including a plurality of menu user interface objects and a plurality of user interface control objects, the plurality of menu user interface objects including at least a first menu user interface object and a second menu user interface object, and the plurality of user interface control objects including at least a first user interface control object and a second user interface control object.

Abstract: A PFC converter and a control method thereof are provided. The PFC converter includes a first bridge, an inductor, a second bridge and a control unit. The first bridge includes a first switch and a second switch connected in series. There is a first node between the first and second switches. Two terminals of the inductor are coupled to the first node and a first terminal of an AC power source respectively. The second bridge includes a third switch and a fourth switch connected in series. There is a second node between the third and fourth switches, and the second node is coupled to a second terminal of the AC power source. The control unit controls a ratio of a high level duration on the second node in every line frequency cycle to be smaller than (250/Vbus)2, where Vbus is an output voltage of the PFC converter.

Abstract: A parking management system and a parking management method are disclosed. The parking management system includes a control device and a parking space boundary indicating device. The control device is configured to acquire size information of a vehicle to be parked and information of the vacant area where no vehicle is parked in a parking lot, determine parking area information of the vehicle to be parked according to the size information and the information of the vacant area, and send the parking area information to the parking space boundary indicating device; the parking space boundary indicating device is configured to form parking space boundary lines by shedding light on a parking area according to the parking area information.

Abstract: A method of presenting a user interface object. The method includes providing data to a display panel of an electronic device having a memory and one or more processors to concurrently display a plurality of user interface objects in a user interface, the plurality of user interface objects including a plurality of menu user interface objects and a plurality of user interface control objects, the plurality of menu user interface objects including at least a first menu user interface object and a second menu user interface object, and the plurality of user interface control objects including at least a first user interface control object and a second user interface control object.

Abstract: The present disclosure generally relates to display technologies. A liquid crystal display panel includes: a light guide layer having a first refractive index, a refractive layer on the light guide layer, a first polarizing layer on the refractive layer, a color filter layer on the first polarizing layer, a liquid crystal layer on the color filter layer, and an array substrate on the liquid crystal layer. The refractive layer includes a plurality of higher refractive index portions having a second refractive index and a plurality of lower refractive index portions having a third refractive index, the plurality of higher refractive index portions and the plurality of lower refractive index portions being arranged in an alternating manner. The liquid crystal display panel is configured to emit light substantially through the higher refractive index portions of the refractive layer.

Abstract: The invention discloses a system for hole making for an aircraft skin by normal positioning and locking. The hole-making system includes a posture adjustment part, a normal positioning and locking part and a hole-making execution part. This system solves the problems that the device in the prior art has high complexity and cumbersome positioning and does not adapt to complex curved surfaces, thereby failing to satisfy the needs of efficient hole making in different space states. In the present invention, the expansion of an outer expansion sleeve in a bottom sleeve locks a normal direction for hole making, thereby ensuring the positioning accuracy of the normal direction. An axial position is locked by the mutual cooperation of an axial positioning groove of the bottom sleeve and an axial positioning rib of the outer expansion sleeve. A hole-making auxiliary cylinder contracts to counteract part of an axial force for hole making.

Abstract: The present disclosure generally relates to display technologies. A liquid crystal display panel includes: a light guide layer having a first refractive index, a refractive layer on the light guide layer, a first polarizing layer on the refractive layer, a color filter layer on the first polarizing layer, a liquid crystal layer on the color filter layer, and an array substrate on the liquid crystal layer. The refractive layer includes a plurality of higher refractive index portions having a second refractive index and a plurality of lower refractive index portions having a third refractive index, the plurality of higher refractive index portions and the plurality of lower refractive index portions being arranged in an alternating manner. The liquid crystal display panel is configured to emit light substantially through the higher refractive index portions of the refractive layer.

Abstract: The present disclosure provides a rapid passing method and device for a target vehicle. The rapid passing method for the target vehicle includes: determining a passing route of the target vehicle according to a place where the target vehicle is located and a destination; acquiring position information of the target vehicle in real time; and controlling lane indicating devices in the passing route to indicate a special-purpose lane used by the target vehicle in the passing route according to the real-time position information and the passing route of the target vehicle, and controlling traffic lights to indicate vehicles disturbing passing of the target vehicle to stop driving when the target vehicle passes through an intersection.

Abstract: A parking management system and a parking management method are disclosed. The parking management system includes a control device and a parking space boundary indicating device. The control device is configured to acquire width size information of a vehicle to be parked and information of the vacant area where no vehicle is parked in a parking lot, determine parking area information of the vehicle to be parked according to the width size information and the information of the vacant area, and send the parking area information to the parking space boundary indicating device; the parking space boundary indicating device is configured to form parking space boundary lines by shedding light on a parking area according to the parking area information.

Abstract: The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.

Abstract: The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.

Abstract: A transformer is disclosed, including a magnetic core, a bobbin, a primary winding wound around the bobbin, at least a first secondary winding and a second secondary winding and at least one turn of coil of the first secondary winding is adjacent to at least one turn of coil of the second secondary winding, and the first secondary winding and the second secondary winding are applied in a full-wave rectifier circuit. A leakage inductance groove is provided between a primary winding groove for winding the primary winding and a secondary winding groove for winding the secondary winding for isolating the primary winding and the secondary winding.

Abstract: The invention discloses a motor running test line, comprising a plurality of motor placing plates, a rack and a plurality of station frames; the rack is provided with an inlet end, and the station frame is provided with an outlet end; the rack is provided with a rack slide rail which makes it possible for motor placing plates to slide thereon, each station frame is provided with a station frame slide rail which makes it possible for motor placing plates to slide thereon, and one end of each station frame is communicated to the rack slide rail, respectively; each station frame is provided with a plurality of stations, each station is equipped with a set of motor running test equipment, and the motor running test equipment comprises an equipment body, a running switch and a motor wiring terminal; and the equipment body is equipped with a timing device.

Abstract: The invention discloses a motor running test line, comprising a plurality of motor placing plates, a rack and a plurality of station frames; the rack is provided with an inlet end, and the station frame is provided with an outlet end; the rack is provided with a rack slide rail which makes it possible for motor placing plates to slide thereon, each station frame is provided with a station frame slide rail which makes it possible for motor placing plates to slide thereon, and one end of each station frame is communicated to the rack slide rail, respectively; each station frame is provided with a plurality of stations, each station is equipped with a set of motor running test equipment, and the motor running test equipment comprises an equipment body, a running switch and a motor wiring terminal; and the equipment body is equipped with a timing device.