Aspects of the subject technology relate to a device comprising a moving-coil speaker including a diaphragm to play low-frequency signals from an audio-signal source, and a piezoelectric transducer coupled to the diaphragm to play high-frequency signals from the audio-signal source. A coupler couples the diaphragm to a housing of the device.

A piezoelectric microelectromechanical system microphone comprises a support substrate, a membrane including a piezoelectric material attached to the support substrate and configured to deform and generate an electrical potential responsive to impingement of sound waves on the membrane, and a compliant anchor including a trench defined in the support substrate about a portion of a perimeter of the membrane to increase sensitivity of the piezoelectric microelectromechanical system microphone.

A microelectromechanical systems (MEMS) diaphragm assembly comprises a first diaphragm and a second diaphragm. A plurality of pillars connects the first and second diaphragms, wherein the plurality of pillars has a higher distribution density at a geometric center of the MEMS diaphragm assembly than at an outer periphery thereof.

A loudspeaker includes a first electrode layer, a second electrode layer arranged opposite to the first electrode layer, a piezoelectric layer between the first electrode layer and the second electrode layer. The first electrode layer is configured for receiving a first driving voltage. The second electrode layer is configured for receiving a second driving voltage. The piezoelectric layer having an outer contour that is smooth. The piezoelectric layer is configured for making sound by generating mechanical vibration according to the first driving voltage and the second driving voltage.

Disclosed is a vibrating diaphragm assembly, which relates to the technical field of electroacoustic products. The vibrating diaphragm assembly comprises a vibrating diaphragm, wherein the vibrating diaphragm comprises a middle part and a folding ring part surrounding the periphery of the middle part; the vibrating diaphragm comprises a vibrating diaphragm substrate layer and a silica gel layer; the silica gel layer is at least partially combined with the vibrating diaphragm substrate layer; the vibrating diaphragm substrate layer is a high molecular material layer; the silica gel layer is combined on the surface of the folding ring part; and the silica gel layer and the high molecular material layer are formed through injection molding. The vibrating diaphragm assembly of the present invention can improve the compliance of a vibrating diaphragm by arranging a silica gel layer on the surface of a folding ring part and compounding the silica gel layer and a high molecular material layer, improve the chemical stability and the temperature adaptability thereof, optimize the acoustic performance, and improve the product qualification rate.

A display device including a display panel including a substrate and a pixel array layer disposed on a first surface of the substrate, a sound generation device disposed on a second surface of the substrate opposite to the first surface of the substrate, and a circuit board disposed on the second surface of the substrate, in which the circuit board includes a first hole overlapping the sound generation device.

An integrated voice coil and cone assembly includes a cone assembly having a top diaphragm skin and a bottom diaphragm skin with a space between the top diaphragm skin and bottom diaphragm skin. The integrated voice coil and cone assembly also includes a voice coil configured to engage the cone assembly along a perimeter edge thereof and an adhesive material placed between the top diaphragm skin and bottom diaphragm skin such that the adhesive material fills all of the space between the top and bottom diaphragm skins. The adhesive material also bonds the top diaphragm skin, bottom diaphragm skin, and voice coil into a single, integrated unit.

An integrated voice coil and cone assembly includes a cone assembly having a top diaphragm skin and a bottom diaphragm skin with a space between the top diaphragm skin and bottom diaphragm skin. The integrated voice coil and cone assembly also includes a voice coil configured to engage the cone assembly along a perimeter edge thereof and an adhesive material placed between the top diaphragm skin and bottom diaphragm skin such that the adhesive material fills all of the space between the top and bottom diaphragm skins. The adhesive material also bonds the top diaphragm skin, bottom diaphragm skin, and voice coil into a single, integrated unit.

The present application provides a method of manufacturing a resonant panel (200) of a flat panel loudspeaker. The method comprises: pressing a resonant panel blank between a first pressing surface (302) and a second pressing surface of a press, whereby to form the resonant panel (200) of the flat panel loudspeaker. The second pressing surface substantially opposes the first pressing surface (302). The first pressing surface (302) comprises at least one tool relief region (306, 312, 314, 316, 318), whereby to form at least one corresponding respective panel relief region (206, 212, 214, 216, 218) in a surface of the resonant panel (200).

A sound apparatus includes a first vibration member, a second vibration member adjacent to the first vibration member, a third vibration member adjacent to the second vibration member, a first vibration apparatus configured to vibrate the first vibration member and the second vibration member and output a sound of a first pitched sound band and a sound of a second pitched sound band which differ, and a second vibration apparatus disposed at a rear surface of the third vibration member and configured to vibrate the third vibration member and output a sound of a third pitched sound band which differs from the sound of the first pitched sound band.