135results about "Bending wave transducers" patented technology

Display device. A display device is disclosed, including a display panel configured to display an image by emitting light; a rear surface structure configured to surround a side surface and a rear surface of the display panel; a vibration generation device connected with the rear surface structure and configured to vibrate the display panel; a rear sound emission portion located between the display panel and the rear surface structure; and a rear sound guide member located between the display panel and the rear surface structure to surround the vibration generation device in a spiral shape and configured to be connected with the rear sound emission portion.

The vibration apparatus may include a vibration generating portion including a first vibration portion and a second vibration portion overlapping the first vibration portion, a first cover member at a first surface of the vibration generating portion, a second cover member at a second surface different from the first surface of the vibration generating portion, and a signal cable including first, second and third signal lines connected to the first vibration portion and the second vibration portion and disposed between the first cover member and the second cover member. An apparatus for vibration may include a passive vibration member and the vibration apparatus.

In an acoustic vibration device that vibrates panel material, a drip-proof structure is added while suppressing an increase in the height dimension. [Solution] The acoustic vibration device 1 comprises a frame 11 fixed to the ceiling interior material 501 side between the ceiling interior material 501 and the outer panel 502 of the vehicle, a vibration unit 12 including a cylindrical body 4 and a magnetic circuit unit 3, a voice coil 52 arranged in the magnetic gap of the magnetic circuit unit 3, a bobbin 51 around which the voice coil 52 is wound, a first damper 61 connecting the cylindrical body 4 and the bobbin 51, a second damper 62 connecting the cylindrical body 4 and the frame 11, and a drip-proof cover 2 to prevent water droplets falling from the outer panel 502 side from adhering to the second damper 62. The drip-proof cover 2 is formed in an annular shape with an open center, is attached to the vibration unit 12, and is positioned on the outer circumference side of the magnetic circuit unit 3 and above the second damper 62. The upper part of the magnetic circuit unit 3 is positioned above the drip-proof cover 2, passing through the opening 23 of the drip-proof cover 2.

An acoustic excitation device includes a frame fixed to a panel material, an excitation unit including a cylindrical body and a magnetic circuit unit attached to an inner circumference of the cylindrical body, and a drip-proof cover that prevents water droplets falling from above the panel material, wherein the drip-proof cover is attached to the excitation unit.

The present invention relates to vehicle glazing suitable for acoustic transmission, comprising an exciter and a glazed assembly, the exciter comprising a connecting portion and a movable portion, the glazing comprising at least one spacer, the connecting portion comprising a mounting portion and a suspended portion, the spacer being fixedly mounted on the mounting portion and on the glazed assembly, the suspended portion having a first face and the glazed assembly having a second face, the first face being arranged facing the second face, the glazing comprising a cavity arranged between the first face and the second face, the cavity being formed by the first face and preferably by the second face.

Embodiments of this application provide a display terminal, and relate to the field of display technologies, to resolve a problem that an overall screen-to-body ratio decreases due to a receiver disposed on a display terminal. The display terminal includes a middle frame, a display module, a vibrator, and at least one vibrating sheet. The display module is connected to the middle frame, and accommodation space is formed between the display module and the middle frame. At least a part of the vibrator is disposed in the accommodation space. The vibrator is connected to the display module or the middle frame. The vibrating sheet is located in the accommodation space. An upper surface of the vibrating sheet is connected to a lower surface of the display module. A lower surface of the vibrating sheet faces the middle frame. In a direction perpendicular to the upper surface of the vibrating sheet, the vibrator and the vibrating sheet are configured to drive the display module to vibrate up and down.

A sound apparatus comprises a vibration member, an enclosure at a rear surface of the vibration member, a connection member between the vibration member and the enclosure, movably supporting an edge of the vibration member, and a vibration apparatus vibrating the vibration member.

The invention relates to a glazing unit comprising: – a glass sheet or a glazed assembly (1) comprising at least one hole; and – at least one audio exciter (2) mounted on a base; wherein the base is inserted into the at least one hole in the glass sheet or glazed assembly (1). The invention also relates to methods for manufacturing such a glazing unit.

This disclosure relates to a complete set of equipment, particularly a display panel that generates sound. The display device according to this disclosure includes: a display module; a back cover disposed on the rear surface of the display module; a recessed portion recessed into the back cover from a first surface of the back cover with a first width and a first depth; a penetrating portion penetrating from a second surface of the back cover to the recessed portion with a second width and a second depth, the second width being less than the first width, and the second depth corresponding to the difference between the thickness of the back cover and the first depth; and a first piezoelectric vibration unit disposed at a stepped portion between the penetrating portion and the recessed portion.

A sound apparatus includes a vibration member having a plate shape; and a first vibration device, a plurality of second vibration devices, and a third vibration device configured to each have a plate shape including a first main surface and a second main surface opposite to each other and configured to vibrate based on a driving signal input thereto. The first main surface of the first vibration device may be connected to the vibration member, a portion of the second main surface of the first vibration device and a portion of the first main surface of the third vibration device may be connected to each other by an elastic member so that the first main surface of the third vibration device is spaced apart from and opposite to the second main surface of the first vibration device by a certain distance. A portion of each of the plurality of second vibration devices may be connected to a portion of the third vibration device and a portion of the first main surface of each of the plurality of second vibration devices may be connected to a portion of the vibration member by an elastic member, so that the plurality of second vibration devices extend radially from the third vibration device in a plane. A driving signal input to the first vibration device may have a phase opposite to a phase of a driving signal input to the third vibration device.

The invention provides an acoustic electric exciter with opposite magnetic force and spring force and an output device. The invention relates to an electrodynamic exciter having a voice coil arrangement, a magnetic circuit system and a spring arrangement, in which the magnetic circuit system comprises a (annular) outer magnetic circuit part which extends radially beyond the voice coil arrangement, in which the voice coil arrangement and the outer magnetic circuit part are arranged in a fixed relationship to one another, and in which the spring arrangement is arranged in the outer magnetic circuit part. The magnetic circuit system includes an inner magnetic circuit portion disposed radially within the voice coil device. The spring device couples the inner magnetic circuit portion to the outer magnetic circuit portion and allows relative movement between the inner magnetic circuit portion and the outer magnetic circuit portion in an offset direction parallel to the voice coil axis, where the magnetic force and the spring force are opposite. Further, an output device is disclosed comprising a sound emitting structure and such an electrodynamic actuator connected thereto.

An apparatus includes at least one actuator configured to generate vibrations over a range of vibration frequencies. The at least one actuator includes a housing configured to be positioned on or within a recipient's body. The actuator further includes a support portion configured to be in operative communication with a fixture implanted within the recipient's body. The actuator further includes an oscillator within the housing, the oscillator includes piezoelectric material and has a first portion in mechanical communication with the support portion and a second portion spaced from the support portion. The piezoelectric material is configured to undergo bending oscillations in response to received electric voltage signals in which the second portion moves relative to the first portion. The actuator further includes at least one damper configured to damp at least one vibrational resonance of the at least one actuator over at least a portion of the range of vibration frequencies and independently of spring damping by the piezoelectric material.

The invention relates to an electric driver for a loudspeaker or acoustic transducer with improved damping. An electric driver for a plate-like structure or diaphragm is disclosed, the electric driver comprising a voice coil, a magnetic circuit system and a plurality of arms movably coupling the voice coil and the magnetic circuit system. The arms are made of a metal having a fatigue strength of at least 370 N / mm 2 or an ultimate tensile strength of at least 1100 N / mm 2 . Each of the arms comprises at least two arm sections arranged to be movable relative to each other and connected to each other by a damping material having a tensile storage modulus of 0.1 MPa - 6000 MPa and a tensile loss factor of at least 0.1, both measured at room temperature of 20°C. Furthermore, the invention relates to a loudspeaker and electric transducer having such an electric driver and to a method of manufacturing an intermediate product for such an electric driver.

A display device (2) includes: a display panel (8) that displays an image on a front surface (8a) of the display panel (8); a rear cover (10) that includes a front surface (10a) facing a back surface (8b) of the display panel (8); and an audio output unit (12) that outputs audio by causing the rear cover (10) to vibrate. The audio output unit (12) is provided spaced apart from the back surface (8b) of the display panel (8) and supported on a back surface (10b) of the rear cover (10).

To provide a vibration device that improves reliability and sound pressure characteristics, and a device including the same.SOLUTION: A vibration device includes a vibration generator 10 including a piezoelectric material in a vibration structure 11, and a sensor unit 30 configured as the vibration generator, and is capable of correcting or compensating for changes in the electrical characteristics of the vibration generator, and capable of correcting or compensating for the vibration characteristics of the vibration generator.SELECTED DRAWING: Figure 1

To provide a panel speaker for improving sound quality of audio to be output.SOLUTION: A panel speaker includes: a first panel (display panel 110); a second panel (transmission panel); a vibration actuator 150 for vibrating the first panel and the second panel; adhesive layers (first adhesive layers 120) for joining one surface of the first panel with one surface of the second panel; and a coupling part (second adhesive layer 140) for joining the other surface of the second panel with the vibration actuator. The adhesive layers include a plurality of belt-shaped areas parallel in one direction. The coupling part is arranged in an area sandwiched between the belt-shaped areas in a plane view.SELECTED DRAWING: Figure 5

Provided in the embodiments of the present disclosure is an assembled screen unit, including a display panel, a frame, a sound-production stimulation unit, and a supporting structure; the supporting structure is configured to support the sound-production stimulation unit; the back side of the display panel includes a central region and an edge region; the sound-production stimulation unit is in contact with the central region; the frame is configured to support the display panel; the frame includes a first sub-portion and a second sub-portion; and a first vibration isolation portion is provided between the first sub-portion and the display panel; a second vibration isolation portion is provided between the second sub-portion and the display panel; and the first vibration isolation portion has a thickness less than the second vibration isolation portion.

An electronic device is disclosed, comprising: an electronic device housing having a housing plate portion; at least one speaker arranged in the electronic device housing, the speaker comprising: a magnetic circuit assembly defining a magnetic gap and comprising a magnet and a magnetic conductive assembly, the magnetic conductive assembly being configured to guide and concentrate magnetic flux from the magnet through the magnetic gap, the magnetic conductive assembly comprising a first magnetic conductive member constituting at least a portion of bottom of the magnetic circuit assembly, and a vibration assembly comprising a diaphragm and a voice coil connected to the diaphragm, with at least a portion of the voice coil being suspended within the magnetic gap, wherein the first magnetic conductive member of the magnetic circuit assembly is directly fixedly connected to the housing plate portion of the electronic device housing.

A system comprising a diaphragm having a first face and a second face, a roll surround disposed around a perimeter of the first face of the diaphragm, a modal coupling apparatus comprising a plurality of connecting arms and a central body, the modal coupling apparatus coupled to the second face of the diaphragm using the plurality of connecting arms, the central body having a shaped first end for receiving a voice coil former, a voice coil wound upon and secured to an outer surface on a first end of the voice coil former, a second end of the voice coil former placed within the shaped first end of the central body, and a positive electrical terminal and a negative electrical terminal, each terminal coupled to the voice coil for transmitting an electrical current through the voice coil upon receiving electrical power.

Embodiments of the present disclosure provide a display apparatus and an electromagnetic actuator, the display apparatus includes a display structure, a sound-emitting substrate, at least one electromagnetic actuator and a stabilizer; where one side of the sound-emitting substrate is attached to the display structure, and the electromagnetic actuator is fixedly attached to the other side of the sound-emitting substrate through the stabilizer; the electromagnetic actuator includes a bracket and a plurality of flexible support feet extending away from the bracket. The electromagnetic actuator is fixedly arranged on the sound-emitting substrate through the stabilizer, and the bracket receives the electromagnetic actuator, the plurality of flexible support feet can keep the electromagnetic actuator stable during the vibration process of the electromagnetic actuator, which helps avoid position shift of the electromagnetic actuator under long-time working.

There is provided a display device including: a substrate including an upper surface, a first side surface extending from a first side of the upper surface, and a second side surface extending from a second side of the upper surface, in which the first side surface is bent with respect to a first bending line that is a boundary between the upper surface and the first side surface, and the second side surface is bent with respect to a second bending line that is a boundary between the upper surface and the second side surface; the second side surface is bent with respect to a second bending line which is a boundary between the upper surface and the second side surface; a first sound unit below the upper surface and configured to output sound by vibrating the vibrating layer; and a first sensing unit below the first side surface and configured to sense a current value or a voltage value according to a force applied to the first sensing unit.

A display device is provided, the display device including a display panel including a display layer including light emitting elements disposed on a substrate and a sensor electrode layer disposed on the display layer. The sensor electrode layer includes first and second sound electrodes, a vibration layer electrically contacting the first and second sound electrodes and deforming in response to a first sound drive voltage applied to the first sound electrode and a second sound drive voltage applied to the second sound electrode, and a sensor electrode disposed on the vibration layer. The sensor electrode senses an input.

The invention relates to an electrodynamic actuator with a coil arrangement, a magnet system and a spring arrangement, wherein the magnet system comprises an outer magnetic circuit part, which runs radially out of the coil arrangement, wherein the coil arrangement and the outer magnetic circuit part are arranged in fixed relation to each other, and wherein the magnet system comprises an inner magnetic circuit part, which is arranged radially within the coil arrangement. The spring arrangement couples the inner magnetic circuit part to the outer magnetic circuit part and allows a relative movement between the inner magnetic circuit part and the outer magnetic circuit part in an excursion direction parallel to the coil axis, wherein the magnet force and the spring force are opposed. In addition, an output device is disclosed, which comprises a sound emanating structure and an electromagnetic actuator of said kind connected thereto.