Abstract: The present application provides a loudspeaker diaphragm, comprising a first surface layer, a middle layer and a second surface layer, that are in a stacked structure. The loudspeaker diaphragm is characterized in that: at least one surface layer of the first surface layer and the second surface layer has a composite structure which is composed of a base layer and a reinforcing layer, and the other surface layer comprises a base layer; the base layer is a poly(ether-ether-ketone) layer, a polyarylester layer, a polyethylene terephthalate layer, a polyetherimide layer or a composite structure composed of any two of the above layers, and the reinforcing layer is a thermoplastic polyurethane elastomer layer or a thermoplastic elastomer layer. The loudspeaker diaphragm can reduce diaphragm breakage after power test is performed on a loudspeaker product, improve substrate toughness and improve acoustical property of the loudspeaker.

Abstract: A wearable electronic apparatus is provided. The wearable electronic apparatus includes: a head-mounted headphone having two sound generators and an elastic headband connected to the two sound generators; a display assembly having two end parts and a central part located between the two end parts; and two connecting mechanisms. Each of the two connecting mechanisms is connected to one of the two sound generators corresponding to the connecting mechanism and connected to one of the two end parts of the display assembly corresponding to the connecting mechanism, so that the end part of the display assembly is configured to deflect with respect to the sound generator.

Abstract: A multi-diaphragm speaker comprises at least four diaphragms, inner connecting rods, and outer connecting rods. The diaphragms located at odd-numbered positions are connected to the inner connecting rods via connecting points, and then the inner connecting rods are connected via the outer connecting rods, thus forming a first set of diaphragms. The diaphragms located at even-numbered positions are connected to the inner connecting rods via connecting points, and then the inner connecting points are connected via the outer connecting rods, thus forming a second set of diaphragms. The long rods and short rods of the inner connecting rods in the first set of diaphragms and in the second set of diaphragms are staggered. The present invention can implement connection of diaphragms without requiring penetration of the diaphragms, thus preventing occurrences of air leakage and poor sound quality, and enhancing sound effects of the speaker.

Abstract: A manufacturing method of a semiconductor structure is provided. The manufacturing method of the semiconductor structure includes the following steps: providing a semiconductor substrate, wherein the semiconductor substrate has a first region and a second region surrounding the first region; forming a gate stack and a dummy gate stack in the first region, wherein the dummy gate stack surrounds the gate stack; forming an oxide layer on an exterior wall and a top surface of the dummy gate stack; forming a dummy conductive layer on the gate stack, the dummy gate stack and the oxide layer, wherein the dummy conductive layer has a concave bowl-shaped top surface in the first region; and performing a chemical mechanical polishing (CMP) process on the dummy conductive layer.

Abstract: A non-volatile memory device includes a substrate, a gate stack structure, an erase gate structure, and a ferroelectric layer. The gate stack structure is disposed on the substrate. The erase gate structure is disposed on the substrate and disposed at a first side of the gate stack structure. The ferroelectric layer is disposed on a sidewall of the gate stack structure, and the ferroelectric layer is disposed between the gate stack structure and the erase gate structure. The ferroelectric layer disposed between the gate stack structure and the erase gate structure may be used to forma negative capacitance effect for amplifying the voltage applied to the erase gate structure. The purpose of reducing power consumption may be achieved accordingly.

Abstract: A loudspeaker vibration system includes a diaphragm body part and a voice coil engaged at a lower side of the diaphragm body part. The diaphragm body part includes a rigid dome part, a silicon rubber membrane, and a plastic support engaged to an edge of the silicon rubber membrane. The dome part is engaged at a middle position of the silicon rubber membrane. A convex or concave bent ring part is provided at a location at an outer side of the dome part on the silicon rubber membrane. A spacing between the edge at an outer side of the dome part and an edge of the bent ring part closer to the dome part is in a range of 0.02 mm and 0.2 mm, and colloid is disposed in a gap between the dome part and the bent ring part. The loudspeaker vibration system according to the present disclosure may improve product sensitivity, reduce distortion and enhance acoustic performance of the product.

Abstract: A multi-diaphragm speaker system comprises a speaker apparatus and a front/rear cavity sealing apparatus. The speaker apparatus comprises at least four diaphragms. Cavities of the speaker apparatus are formed between every two adjacent diaphragms of the speaker apparatus. The cavities that are spaced apart from each other jointly form a first acoustic cavity of the speaker apparatus. The cavities adjacent to the first acoustic cavity form a second acoustic cavity of the speaker apparatus. The first acoustic cavity and the second acoustic cavity are separated via the front/rear cavity sealing apparatus. Utilization of the present utility model solves the problem of speaker front/rear cavity separation.

Abstract: The present application refers to a head-mounted electronic device including a headphone, a display portion, and two position limiting structures. The headphone includes a C-shaped elastic belt which has two connection ends, two movable members, each rotatably connected to one connection end around a first axis, and two sound generators, each rotatably connected to one movable member around a second axis. The display portion includes a main body generating and projecting images, and two connection members connected to opposite ends of the main body. Each of the two connection members is rotatably connected to the sound generators around a respective third axis. When rotating around the third axis, the headphone is driven by the display portion to rotate around the first axis and the second axis, which avoids distortion of the elastic belt and the connection member, and ensures the display portion can be folded together with the headphone.

Abstract: The present disclosure relates to a head-mounted electronic device. The head-mounted electronic device includes: a U-shaped head-mounted headphone; a U-shaped display component rotatably connected to the headphone; a sensor component disposed to the headphone and configured to sense a wearing state of the headphone; and a control means electrically connected to the sensor component and configured to control the display component and/or the headphone to make a correlative response when the sensor component senses that the headphone is switched between the wearing state and a non-wearing state.

Abstract: A woofer speaker is provided, comprising a woofer speaker unit, a first sealing pad, a second sealing pad and a housing. The first sealing pad is fixed closely with the outer edge of the housing; the woofer speaker unit is fixed and sealed within the housing by the first sealing pad, and the second sealing pad is located between the woofer speaker unit and the housing; a sound hole is provided on the housing, and the shape and size of the sound hole correspond to those of the woofer speaker; and the terminal installation plane is the rear cover of the woofer speaker, and together with the housing forms the rear sound cavity of the woofer speaker through the first sealing pad. The cavity of the woofer speaker provided by the invention and the installation terminal applying the woofer speaker resolve the rear cover vibration problem of ultra-thin woofer speakers.

Abstract: A method for fabricating memory device includes the steps of: providing a substrate; forming a tunnel oxide layer on the substrate; forming a first gate layer on the tunnel oxide layer; forming a negative capacitance (NC) insulating layer on the first gate layer; and forming a second gate layer on the NC insulating layer. Preferably, the second gate layer further includes a work function metal layer on the NC insulating layer and a low resistance metal layer on the work function metal layer.

Abstract: A method for fabricating semiconductor device is disclosed. The method includes the steps of: providing a substrate having a first region and a second region; forming a gate layer on the substrate; forming a first gate dielectric layer on the gate layer; forming a first channel layer on the first region and a second channel layer on the second region; and forming a first source/drain on the first channel layer and a second source/drain on the second channel layer.

Abstract: A speaker comprises at least four diaphragms, inner connecting rods, outer connecting rods, and a cavity sealing housing. Diaphragms spaced apart from each other respectively form a set of diaphragms. The two sets of diaphragms move relative to each other. Connecting points are provided on rigid domes of each of the diaphragms. The inner connecting rods are connected to the diaphragms via the connecting points on the domes. The inner connecting rods respectively connected to the two sets of diaphragms are connected one to another via different outer connecting rods. Cavities of the speaker are formed between adjacent diaphragms. Cavities spaced apart from each other jointly form a front acoustic cavity. The cavities adjacent to the front acoustic cavity form a rear acoustic cavity. The cavity sealing housing seals the front acoustic cavity/rear acoustic cavity, thus allowing separation of the front and rear acoustic cavities of the speaker.

Abstract: A tablet woofer and an electronic device using same. The woofer comprises a vibrating diaphragm, at least four mutually independent drive units (5), and a housing (3). The vibrating diaphragm is a rectangle shape, and comprises a rigid arc portion (1) at the central position and a spiral curve portion (2) at the periphery; the drive unit (5) comprises a voice coil unit and a corresponding magnetic circuit unit, and four angles of the arc portion (1) of the vibrating diaphragm are each combined with one voice coil unit; the housing (3) is provided with mounting holes (4) for accommodating and mounting the drive units (5), and sound holes penetrating through the mounting plane; the spiral curve portion (2) of the vibrating diaphragm is fixedly connected to the periphery of the upper side of the housing (3).

Abstract: This application discloses a data traffic management method and apparatus. The method includes: obtaining traffic control information of a first application and a data traffic value used by the first application, where the traffic control information includes at least an upper traffic threshold; and disconnecting a data connection of the first application when the data traffic value used by the first application is greater than or equal to the upper traffic threshold included in the traffic control information of the first application. In the foregoing solution, real-time traffic management on a single application is implemented, so that a user instantly modifies traffic control information according to a requirement, to manage data traffic in real time.

Abstract: A light-erasable embedded memory device and a method for manufacturing the same are provided in the present invention. The light-erasable embedded memory device includes a substrate with a memory region and a core circuit region, a floating gate on the memory region of the substrate, at least two light-absorbing films above the floating gate, wherein each light-absorbing film is provided with at least one dummy via hole overlapping the floating gate, and a dielectric layer on each light-absorbing film and filling up the dummy via holes.

Abstract: A flat plate bass loudspeaker comprising a flat plate diaphragm, at least three driving units and a housing. The driving unit comprises a voice coil unit and a magnetic circuit unit; the voice coil units are dispersedly coupled to one side of the diaphragm near the housing; mounting holes for accommodating and fixing the magnetic circuit units, and voice outlet holes penetrating through the housing are arranged on the housing; the number and position of the mounting holes are corresponding to those of voice coils attached to the spherical top of the diaphragm; and ratio of the total area of the voice outlet holes to the orthographic projection area of the diaphragm on the housing is in a range less than 0.9. The flat plate bass loudspeaker provided by the present invention can avoid the problems occurred in thick and heavy voice coils and excessive magnet performance.