Abstract:
The invention concerns a hearing aid, which has a casing accommodating one or more sound to electric signal converting transducers (11,12) and a signal path from the transducer (11,12) to a receiver which provides a sound signal at the ear of the user. The signal processing is provided in the signal path to ensure a signal amplification/attenuation according to the needs of the user. A battery (6) is accommodated in the casing and a battery lid is arranged with a first side (1) facing the surrounding and a second side (2) facing the interior of the casing whereby the battery lid is operable for replacement of the battery. According to the invention the battery lid has means (3) for receiving at least one sound to electric signal converting transducer (11,12) and a sound transmission path is provided between the first side (1) of the battery lid and the at least one transducer (11,12).
Abstract:
The invention regards an audio processing device with at least one encapsulated electronic component mounted and electrically connected to electric leads in a mounting substrate. Further electric components are mounted for connection with the encapsulated electronic component through the substrate and the encapsulation material is moulded onto the substrate. According to the invention at least one metal layer is deposited on a surface part of the encapsulation material. The invention further regards a method for producing an amplifier for an audio device whereby at least one encapsulated electronic component is mounted on, and electrically connected to a PCB and where the encapsulation material is provided to protect the electronic component wherein further a metal layer is generated at least on a surface area of the encapsulation material.
Abstract:
The invention concerns a process for generating a through wafer via from a first to a second external surface of a CMOS or similar circuitry containing wafer, whereby a metal layer is deposited on the second surface of the wafer and where a DRIE process is subsequently used to generate the hole through the wafer material from the first surface to the metal layer and using the metal layer as an etch stop, and whereafter an electrical insulation layer is deposited on the side walls of the hole and an electrically conducting material is provided on top of the electrical insulation material.
Abstract:
The invention concerns a method for producing miniature amplifier and signal processing unit. The method comprises the steps of: producing arrays of individual integrated circuits on a side of a wafer, where each circuit has a number of I/O connection points; providing a number of solder connection pads at each integrated circuit for redistribution of the I/O connection points of the integrated circuit; coating the side of the wafer having the solder connection pads with a protection coating and ensuing through going apertures in the coating to provide electrical contact with the solder connection pads; applying electrical components onto the coating and gaining electrical contact with the solder connection pads through the apertures of the coating material; singulating the individual amplifiers from the wafer and ensuring light protection of the edges and possible unprotected side of the amplifiers.