摘要:
A magnetic coupling device that supplies a high-frequency electromagnetic field appropriate for sensing and reading of information to a fine magnetic coupling circuit component contained in/added to individual banknotes, securities, or any other valuable sheet-like or plate-like objects, ensures sufficient magnetic coupling, and supplies sufficient electric power; and a reading device having equivalent functions are provided.A scanning probe (a magnetic coupling device) 100 is a magnetic coupling device having a loop antenna for generation of a high-frequency electromagnetic field that resonates with and senses a tank circuit built into a fine magnetic coupling circuit component, and the loop antenna has a dielectric substrate 101, a first loop antenna 102A formed on the foreside of the dielectric substrate, a second loop antenna 102B formed on the backside of the dielectric substrate so as to be located in the same position and have the same diameter as the first loop antenna, and junctions (through holes) 108 and 110 connecting the first loop antenna and the second loop antenna in series.
摘要:
A method for manufacturing a semiconductor device comprises dry-etching a thin film using a resist mask carrying patterns in which at least one of the width of each pattern and the space between neighboring two patterns ranges from 32 to 130 nm using a halogenated carbon-containing compound gas with the halogen being at least two members selected from the group consisting of F, I and Br. The ratio of at least one of I and Br is not more than 26% of the total amount of the halogen atoms as expressed in terms of the atomic compositional ratio to transfer the patterns onto the thin film. Such etching of a thin film avoids causing damage to the resist mask used. The resulting thin film carrying the transferred patterns is used as a mask for subjecting the underlying material to dry-etching.
摘要:
For a multilayer insulating film of a semiconductor device, the distributed quantity of carbon or fluorine is maximized at the interface between insulating films. The concentration of carbon present at the interface is 1.times.10.sup.20 atoms/cm.sup.3 or more.
摘要:
A bipolar transistor includes a base region made of silicon crystal doped with a first impurity to a first level so as to establish a first carrier concentration in the base region and an emitter region made of silicon crystal doped with a second impurity to a second level substantially larger than the first level by a predetermined factor so as to establish a second carrier concentration in the emitter region, in which the second impurity exceeds the solubility limit of the second impurity in silicon crystal. The first and second levels are chosen in such a range that a difference in the carrier concentrations between the emitter region and the base region decreases substantially with increasing impurity level in the base region.
摘要:
A multilayer insulating film of a semiconductor device, where the distributed quantity of carbon or fluorine is maximized at the interface between insulating films. The concentration of carbon present at the interface is 1.times.10.sup.20 atoms/cm.sup.3 or more.
摘要:
A metal-insulator-semiconductor (MIS) device comprising a MIS transistor and a MIS input element which are fabricated apart from each other on a semiconductor substrate. The MIS transistor is provided with source and drain regions as well as a channel region between the source and drain regions, a gate insulating layer on the channel region and a gate on the insulating layer. The MIS input element is provided with an input region of the same conductive type as the channel region, an insulating layer on the input region and an electrode on the insulating layer. The electrode and insulating layer of the input element are made of the same material in the same thickness as the gate and insulating layer of the MIS transistor, and the gate of the MIS transistor is exclusively electrically interconnected to the electrode of the MIS input element.