A multi-layered laminate for producing membranes for electroacoustic transducers, comprises a first layer of a polyether ether ketone film having a heat of crystallisation of at least 15 J/g, a second layer (of a thermoplastic plastic film having a heat of crystallisation of no more than 5 J/g, and an adhesive layer arranged between the first and second layers. Alternatively, the first and second layers are defined by their shrinkage properties after 15 minutes at 200° C.: the first layer has shrinkage of more than 10% in at least one direction, and the second layer has shrinkage of less than 10% in the longitudinal and transverse directions. A laminate constructed in this manner exhibits lower fold formation when processed using multi-cavity thermoforming. The laminates are useful for the production of membranes for electroacoustic transducers.

A microphone device includes a base and a microelectromechanical system (MEMS) transducer and an integrated circuit (IC) disposed on the base. The microphone device also includes a cover mounted on the base and covering the MEMS transducer and the IC. The MEMS transducer includes a diaphragm attached to a surface of the substrate and a back plate mounted on the substrate and in a spaced apart relationship with the diaphragm. The diaphragm is attached to the surface of the substrate along at least a portion of a periphery of the diaphragm. The diaphragm can include a silicon nitride insulating layer, and a conductive layer, that faces a conductive layer of the back plate. The MEMS transducer can include a peripheral support structure that is disposed between at least a portion of the diaphragm and the substrate. The diaphragm can include one or more pressure equalizing apertures.

A microphone device includes a base and a microelectromechanical system (MEMS) transducer and an integrated circuit (IC) disposed on the base. The microphone device also includes a cover mounted on the base and covering the MEMS transducer and the IC. The MEMS transducer includes a diaphragm attached to a surface of the substrate and a back plate mounted on the substrate and in a spaced apart relationship with the diaphragm. The diaphragm is attached to the surface of the substrate along at least a portion of a periphery of the diaphragm. The diaphragm can include a silicon nitride insulating layer, and a conductive layer, that faces a conductive layer of the back plate. The MEMS transducer can include a peripheral support structure that is disposed between at least a portion of the diaphragm and the substrate. The diaphragm can include one or more pressure equalizing apertures.

Embodiments of the present disclosure relate to an organic light emitting display device which directly vibrates an organic light emitting display panel to generate sound, and includes: an organic light emitting display panel including a light emitting layer including an organic light emitting material layer and an encapsulation layer disposed at one side of the light emitting layer; and a sound generating actuator in direct contact with the organic light emitting display panel to vibrate the organic light emitting display panel to generate sound. Especially, the organic light emitting display panel is a bottom emission type device, and thus can prevent generation of a weighted color mixing phenomenon in a wide viewing angle at the time of panel vibration and reduce the thickness or weight of the panel to thereby enhance the sound generation characteristic.

A speaker device includes a vibration generator, a rod-like member, and a sound generator. The vibration generator vibrates when receiving an electrical signal. The rod-like member has a first longitudinal end fixed to the vibration generator. The sound generator is attached to a part of the rod-like member. The sound generator integrally includes a vibration transmitter which has a fibrous structure and a diaphragm which is a sheet and has a fibrous structure. When a fiber direction is defined as a direction in which fibers of a fibrous structure are oriented, a fiber direction of the vibration transmitter and a fiber direction of the diaphragm intersect with each other.

The present application discloses a mobile terminal, which comprises a flexible screen, a middle frame matched with the flexible screen to form an accommodation space, an exciter fixed on the middle frame, a support layer clamped between the flexible screen and the middle frame, and a steel sheet at least covering a sound generation area, wherein an area, in which the support layer is not arranged, on the flexible screen forms the sound generation area; and the exciter is fixed on the steel sheet to drive the sound generation area to generate sound through vibration. The sound generation area of the flexible screen is driven by the exciter to generate the sound, so that the mobile terminal provided by the present invention has a better sound generation effect compared with the related art.

The present disclosure discloses a silica gel vibrating diaphragm and a method for fabricating the same. The method comprises: forming a composite material belt by using two layers of a base material and liquid silica gel in a calendering manner, wherein the liquid silica gel is between the two layers of the base material; wholly hot-press molding the composite material belt by a vibrating diaphragm die holder, a temperature of the hot-press molding being higher than a vulcanization temperature of the liquid silica gel; removing the two layers of the base material to obtain a whole sheet of silica gel vibrating diaphragm; and blanking the whole sheet of silica gel vibrating diaphragm that has been removed of the two layers of the base material to fabricate a required silica gel vibrating diaphragm. As compared with conventional solutions, the technical solution of the present disclosure has the advantages of simple molding manner, low cost, various styles of the vibrating diaphragm, and small thickness of the vibrating diaphragm.

The present invention provides a diaphragm structure of a sounding apparatus comprising: a thin-film layer; a first circuit thin-film layer fixed on a first side of the thin-film layer by means of a first electrolytic bonding layer; a second circuit thin-film layer fixed on a second side of the thin-film layer by means of a second electrolytic bonding layer; multiple holes passing through the first circuit thin-film layer, the thin-film layer and the second circuit thin-film layer; and multiple conductive layers disposed on inner circumferential walls of the holes and in contact with the first circuit thin-film layer and the second circuit thin-film layer. In the diaphragm structure provided by the present invention, instead of using back adhesives, electrolytic bonding is used to fix the circuit thin-film layers on two sides of a thin-film layer, thereby greatly reducing the thickness of the diaphragm structure.

A MEMS microphone and a method for manufacturing a MEMS microphone are disclosed. Embodiments of the invention provide a MEMS microphone including a MEMS microphone structure having at least one counter electrode structure and a diaphragm structure deflectable with respect to the counter electrode structure and a thermocouple arranged at the MEMS microphone structure.

An interior component of a vehicle comprises a carrier having a front face directed toward a passenger compartment of the vehicle and an opposite rear face; a speaker including an at least partially transparent diaphragm and a transducer coupled to the diaphragm. Movement of the transducer causes vibration of the diaphragm to generate sound by vibration of the diaphragm, the diaphragm having a front face directed towards the passenger compartment and an opposite rear face. The carrier provides a support along at least part of the periphery of the diaphragm where the diaphragm is attached to the carrier where the front face and the rear face of the diaphragm are free of the carrier across a part of the diaphragm surface so that the diaphragm is suspended in the carrier of the interior component.