摘要:
A gas laser arrangement includes a discharge tube arranged between a cathode and anode and including a central discharge channel and at least one gas return channel. An auxiliary electrode for pre-discharge is allocated to the cathode, the auxiliary electrode being connected to an operating voltage source through a resistor.
摘要:
A gas laser arrangement includes a discharge tube between a cathode and an anode, the discharge tube including a central discharge channel and at least one gas return channel. A blocking electrode is provided at the openings of the gas return channels at least in the cathode space and possibly also in the anode space, the blocking electrode being connected to a blocking voltage to avoid misfirings of the laser through the gas return channels.
摘要:
An ion laser includes a magnetic field source to generate an axial magnetic field in one region and transverse field components outside the region, the magnetic field source being shorter than the discharge channel of the laser. Axially spaced permanent magnets in the proximity of the discharge channel are adapted to the laser structure and can include magnetic rings or ring structures. The magnets are preferrably adjacent the cathode end of the discharge channel.
摘要:
The invention relates to a method for producing a microphone, in which a transducer element (WE) is mounted on a carrier (TR); a cover is arranged over the transducer element (WE) and the carrier (TR) such that the transducer element (WE) is enclosed between the cover and the carrier (TR); a first sound inlet opening (S01) is produced in the carrier (TR); a functional test of the microphone is carried out; the first sound inlet opening (S01) is closed; and a second sound inlet opening (S02) is created in the cover. The present invention further relates to a microphone resulting from the method, in which the first sound inlet opening (S01) is prepared but closed.
摘要:
Frames (3) applied on a wafer (1) are leveled and covered with a covering film, such that gas-tight housings are formed for component structures (5), in particular for filter or MEMS structures. Inner columns (4) can be provided for supporting the housing and for the ground connection; outer columns (4) can be provided for the electrical connection and are connected to the component structures by means of conductor tracks (6) that are electrically insulated from the frames (3).
摘要:
A plurality of unpackaged substrates connected to one another is disclosed. The stepped structures on and/or in a first main area of a first substrate include a plurality of integrated circuits. The stepped structures run between the integrated circuits. The first conductor tracks extend from at least some contact connections of the respective integrated circuits as far as the stepped structures. The first substrate is connected on the side of the first main area to a further substrate. The first substrate is severed from a second main area opposite to the first main area such that the first substrate is divided into a plurality of substrate pieces. Each substrate piece has one of the integrated circuits. The first conductor tracks are accessible in interspaces between the substrate pieces. The second conductor tracks are formed from the second main area. At least some of the second conductor tracks lead from the second main area over side walls of the substrate pieces as far as the first conductor tracks.
摘要:
A chip device is produced providing at least one wafer having a plurality of chip components. The wafer or wafers are separated into the individual chip components and/or into groups of chip components. The individual chip components and/or the groups of chip components are applied to a carrier element, in such a way that interspaces having a predetermined width are formed between the individual chip components and/or the groups of chip components. A polymer is introduced into the interspaces in order to form a composite element composed of the chip components and a polymer matrix. The composite element is separated in such a way that chip devices composed of in each case one of the chip components and at least one section of the polymer matrix are formed. The invention furthermore relates to a chip device produced by means of the method.
摘要:
A MEMS component includes a chip that has a rear side having a low roughness of less than one tenth of the wavelength at the center frequency of an acoustic wave propagating in the component. Metallic structures for scattering bulk acoustic waves are provided on the rear side of the chip and a material of the metallic structures is acoustically matched to a material of the chip.
摘要:
A circuit board comprising a circuit carrier, a cover layer composed of a nonconductive material, comprising an organic substance, arranged on the circuit carrier, a first metallization layer at least partly arranged on the cover layer, wherein the first metallization layer has a flexible region.
摘要:
Frames (3) applied on a wafer (1) are leveled and covered with a covering film, such that gas-tight housings are formed for component structures (5), in particular for filter or MEMS structures. Inner columns (4) can be provided for supporting the housing and for the ground connection; outer columns (4) can be provided for the electrical connection and are connected to the component structures by means of conductor tracks (6) that are electrically insulated from the frames (3).