A package structure of a micro speaker includes a substrate, a diaphragm, a coil, a carrier board, a lid, a first permanent magnetic element, and a second permanent magnetic element. The substrate has a hollow chamber. The diaphragm is suspended over the hollow chamber. The coil is embedded in the diaphragm. The carrier board is disposed on the bottom surface of the substrate. The first permanent magnetic element is disposed on the carrier board and in the hollow chamber. The lid is wrapped around the substrate and the diaphragm. The lid exposes a portion of the top surface of the diaphragm. The second permanent magnetic element is disposed either above the lid or under the lid.

An acoustic transducer is disposed within a wearable sound device or to be disposed within the wearable sound device. The acoustic transducer includes a first anchor structure and a first flap. The first flap includes a first end and a second end. The first end is anchored by the first anchor structure, and the second end is configured to perform a first up-and-down movement to form a vent temporarily. The first flap partitions a space into a first volume to be connected to an ear canal and a second volume to be connected to an ambient of the wearable sound device. The ear canal and the ambient are connected via the vent temporarily opened.

The present application discloses a display panel and a display device including the display panel. The display panel includes a display panel body, a magnet structure and a drive membrane. The drive membrane is located on the display panel body, and the magnet structure is located on a side of the drive membrane facing away from the display panel body. One or more conductive traces are arranged within the drive membrane, and the magnet structure is configured for generating a magnetic field. The drive membrane is configured to deform under an interaction between the magnetic field and a modulation current applied onto the one or more conductive traces, thereby driving the display panel body to vibrate and produce sounds.

The present disclosure relates to a speaker and a magnetic circuit system thereof. The speaker includes a housing and at least one magnetic circuit system and at least one vibration system arranged in the housing. The at least one vibration system includes at least one layer of drive circuit configured to generate mechanical motion under the action of a magnetic field of the at least one magnetic circuit system, and a diaphragm driven by the at least one layer of drive circuit. The at least one layer of driving circuit is mounted to the diaphragm and has a planar shape. Since the driving circuit of the vibration system has a planar shape, the thickness of the speaker of the present disclosure can be effectively reduced.

An acoustic transducer is disposed within a wearable sound device or to be disposed within the wearable sound device. The acoustic transducer includes a first anchor structure and a first flap. The first flap includes a first end and a second end. The first end is anchored by the first anchor structure, and the second end is configured to perform a first up-and-down movement to form a vent temporarily. The first flap partitions a space into a first volume to be connected to an ear canal and a second volume to be connected to an ambient of the wearable sound device. The ear canal and the ambient are connected via the vent temporarily opened.

An acoustic transducer is configured to perform an acoustic transformation. The acoustic transducer is disposed within a wearable sound device or to be disposed within the wearable sound device. The acoustic transducer includes at least one anchor structure, a film structure and an actuator. The film structure is disposed within a first layer and anchored by the anchor structure disposed within a second layer. The actuator is disposed on the film structure, and the actuator is configured to actuate the film structure to form a vent temporarily. The film structure partitions a space into a first volume to be connected to an ear canal of a wearable sound device user and a second volume to be connected to an ambient of the wearable sound device. The ear canal and the ambient are to be connected via the vent temporarily opened when the film structure is actuated.

An electromagnetic transducer, including at least one active air gap, wherein the active air gap is a non-axial air gap. In some instances, the electromagnetic transducer of claim further comprises a coil configured to generate a dynamic magnetic field, the coil having a longitudinal axis, wherein the active air gap extends in the direction of the longitudinal axis of the coil.

A sound producing package structure includes a first sub-package structure and a second sub-package structure. The first sub-package structure includes a first substrate having a first opening and a first chip including a first membrane, wherein a first cavity is formed between the first membrane and the first substrate. The first sub-package structure and the second sub-package structure are stacked, and the second sub-package structure includes a second substrate and a second chip. The second substrate is connected to the first substrate and has a second opening. The second chip includes a second membrane, wherein a second cavity is formed between the second membrane and the second substrate. A gap, connected to the first opening and the second opening, is formed between the first substrate and the second substrate, such that an ambient of the sound producing package structure, the first cavity and the second cavity are connected.

Provided is a speaker driver. The speaker driver includes a pair of yoke members that is arranged to face each other so as to have empty spaces provided on inner sides thereof and fixed to a stand base, two or more magnets that are mounted on inner side surfaces of the yoke members, and a rotating member that is provided with a voice coil disposed in parallel in a direction facing the magnet and disposed between the yoke members, and has one end rotatably coupled to the yoke members and the other end provided with a diaphragm coupling part to which a diaphragm is coupled.

A package structure of a micro speaker is provided. The package structure includes a substrate, a diaphragm, a coil, an etch stop layer, a carrier board, a permanent magnetic element, and package lid. The substrate has a hollow chamber. The diaphragm is suspended over the hollow chamber. The coil is embedded in the diaphragm. The etch stop layer is positioned below the coil and overlaps the coil in the direction that is perpendicular to the top surface of the diaphragm. The etch stop layer is made of a metal material. The carrier board is disposed on the bottom surface of the substrate. The permanent magnetic element is disposed on the carrier board and in the hollow chamber. The package lid is wrapped around the substrate and the diaphragm, and has a lid opening that exposes a portion of the top surface of the diaphragm.