Lintec Corporation

Ehime Prefectural Government

C.d.n. Corporation

Taiga Matsushita

Yasukazu Nakata

Katsuyoshi Matsuura

Yuichi Iwakata

Katsumi Katakura

Takakazu Murakami

Masateru Yamakage

Masaharu Ito

Naoki Hasegawa

Takashi Morioka

Yuma Katsuta

Kousaku Nagashima

Masaaki Morikawa

Ryuzo Noda

Katumi Katakura

Katsuhisa Fujiwara

Satoshi Yamamoto

Tatsuo Senba

Yoshio Nikawa

A pseudo sheet structure is usable for a sensor configured to emit an electromagnetic wave in a band ranging from 20 GHz to 100 GHz. The pseudo sheet structure includes a plurality of conductive linear bodies arranged at an interval L satisfying a formula (1) below, 0.034×λ≤L≤20 mm (1). In the formula (1), L is the interval between the plurality of conductive linear bodies, λis a wavelength of the electromagnetic wave emitted by the sensor, and a unit for each of L and λis mm.

Pseudo sheet structure, sheet conductive member, and sensor device

An aspect of the present invention provides an electromagnetic wave absorption film that is less susceptible to the surrounding environment. An electromagnetic wave absorption filmhas: a planar base; a first electromagnetic wave absorption patternformed on the base; a second electromagnetic wave absorption patternformed on the base; and a third electromagnetic wave absorption patternformed on the base, wherein when A [GHz] is defined as a frequency at which an absorption amount of an electromagnetic wave absorbed by the first electromagnetic wave absorption patternexhibits its local maximum value in a range from 20 to 110 GHz, B [GHz] satisfies Expression (1), B [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the second electromagnetic wave absorption patternexhibits its local maximum value, and C [GHz] satisfies Expression (2), C [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the third electromagnetic wave absorption patternexhibits its local maximum value,1.037&#xd7;&#x2264;1.30&#xd7;&#x2003;&#x2003;Expression (1)0.60&#xd7;&#x2264;0.963&#xd7;&#x2003;&#x2003;Expression (2).

Electromagnetic wave absorption film, electromagnetic wave absorption sheet

An antenna circuit which includes a substrate and a planar circuit with a circuit line of a conductive material formed on a surface of the substrate, and at least one conductive pad (notch-forming part) electrically connected with the circuit line of the planar circuit. Cutting lines, such as perforations, are provided in the substrate around an outer periphery of the notch-forming part and extend into the notch-forming part on either side of connection points where the circuit line connects with the notch-forming part, The cutting lines approach each other in the notch-forming part to form a section (notch port). The antenna circuit can be destroyed even if an IC tag provided with the antenna circuit is peeled off from various directions, and the destruction rate of the circuit can be increased stably.

Antenna circuit

The present invention provides an electronic circuit which comprises a circuit line and a terminal portion connected to the circuit line, wherein the terminal portion has a folding endurance structure at a junction where the terminal portion is connected to the circuit line and the folding endurance structure of the terminal portion has a plane width gradually-increasing portion, in which the width of the terminal portion in plane view increases continuously or intermittently as the folding endurance structure of the terminal portion becomes away from the junction where the terminal portion is connected to the circuit line. The electronic circuit and an IC tag incorporating the electronic circuit of the present invention are excellent in folding endurance property, and can have an electronic circuit which is hard to break even if the electronic circuit is folded.

Electronic circuit and IC tag

According to the present invention, there is disclosed an antenna circuit characterized by comprising:

IC tag

When at least one IC chip is mounted on electrode parts, a connecting part for mounting IC chip according to the present invention can control an area of an overlap between the electrode parts on which each IC chip is mounted and each IC chip according to a mounting position of each IC chip. An antenna circuit according to the present invention includes a connecting part for mounting IC chip and an antenna unit of the present invention. An IC inlet according to the present invention includes at least one IC chip on the connecting part for mounting IC chip of the antenna circuit of the present invention.

Connecting part for mounting IC chip, antenna circuit, IC inlet, IC tag and method of adjusting capacitance

The present invention discloses: an IC inletwhich comprises a substrate, a surface circuit including a plain coil circuit portionformed on the substrate and opposed electrodesandindividually connected with the two ends of the plain coil circuit portion, and an IC chipmounted in connection with the opposed electrodes, wherein a cut-away broken lineformed in at least a portion of the surface circuit so as to pass through the substrate and the surface circuit, and IC tag which is produced by the use of the IC inlet.

Antenna circuit, IC inlet and IC tag

The present invention discloses a connecting part of conductor pattern, which is connected to a conductor pattern formed on a surface of an insulating substrate and which has at least one dent on the surface, and a conductor patterns-connected structure obtained by electrically connecting the connecting parts of conductor patterns, mentioned above, to each other with a conductive material which fills the inside of the dent of each connecting part and further is adhered to each connecting part.

Connecting part of conductor pattern and conductor patterns-connected structure

An antenna circuit includes a plurality of antenna circuit units on a circuit substrate. The plurality of antenna circuit units includes: a large antenna circuit unit whose circuit size is large; and a small antenna circuit unit whose circuit size is smaller than the size of the large antenna circuit unit, the small antenna circuit unit provided inside the large antenna circuit unit and provided detachable from the large antenna circuit unit.

Antenna circuit, IC inlet, multi tag, and method for producing multi tag

An IC tag and an IC card are provided to achieve reduction in size, improvement on workability and the yield rate when manufacturing, reduction of manufacturing cost, etc., The IC tag of this invention is formed for transmitting information in non-contact manner, and two pieces of antenna circuitsare folded and superposed on each other therebetween. One of the two pieces of antenna circuitsis a mounted circuitA on which an IC chipis not mounted, and the other is an opened circuitB on which on IC chipis mounted. On one surface of the antenna circuitis provided a surface printing materialon which visible information is printed. On the other surface of the antenna circuitis provided an adhesive member, so that the antenna circuitcan be stuck with each other by folding a circuit support portion

Antenna circuit, IC inlet, IC tag, and IC card, as well as manufacturing method of IC tag and manufacturing method of IC card

The present invention provides a flip chip mounting substrate which comprises an electronic circuit composed of a circuit line and plural mounting pads connected to both ends of the circuit line formed on one surface of a base sheet, wherein the plural mounting pads are faced each other and spaced a pad clearance gap apart, and one or more semiconductor mounting paste guide paths are formed in the mounting pads. The flip chip mounting substrate can reduce voids that might be produced in the semiconductor mounting paste, when flip-chip-mounting an IC chip on a flip chip mounting substrate.

Flip chip mounting substrate

The present invention provides identification functional paper which allows secure measurement of a change in signal caused by a magnetic material and excels in waveform reproducibility when measuring a single specimen two or more times, and an identification card including the identification functional paper. The identification functional paper includes a magnetized fiber obtained by filling the fiber inner cavity with a magnetic material, and the identification card includes the identification functional paper.

Identification function paper and identification card

The present invention provides an IC tag which has a structure comprising a first adhesive layer laminated on a surface of a substrate sheet, an electronic circuit containing a circuit line having a bypass line and an IC chip connecting to the electronic circuit which are formed on a surface of the first adhesive layer, a second adhesive layer laminated for covering the electronic circuit and the IC chip, and a release agent layer formed partly at the position corresponding to a circuit section consisting of the electronic circuit and the IC chip and located at the interface between the substrate sheet and the first adhesive layer, wherein the angle formed by the tangent of the bypass line at the connection between the bypass line and the circuit line and the tangent of the circuit line at the connection is 10 degree or greater. When the IC tag attached to an article is peeled off, the built-in electronic circuit is surely broken.

To present the ID tag including flat coil component, and characteristic adjusting method of ID tag capable of suppressing product fluctuations about the desired characteristic. The flat coil component of the ID tag of the invention comprises a flat coil composed of a conductive material provided continuously and spirally on an insulating substrate, and a jumper disposed on the flat coil with insulation, from one of inner end or outer end of this flat coil to the outside or inside of the flat coil where other end is positioned, in which the jumper is composed of a plurality of jumpers variable in the number of pieces in arrangement. The characteristic is adjusted by varying the number of effective pieces for forming the parallel arrangement.

Flat coil component, characteristic adjusting method of flat coil component, ID tag, and characteristic adjusting method of ID tag

A loop antenna is constructed by bending a linear conductor so that it forms concavo-convex portions within an antenna plane. As an example, the shape of the loop antenna comprises a long straight line portion (LP) which elongates substantially straight in the direction of the arrow X, a short straight line portion (TP) which is at a predetermined angle (&#x3b8;) with respect to the long straight line portion (LP) and shorter than the long straight line portion (LP), and a short straight line portion (TP) which is at a predetermined angle (&#x3b8;) with respect to the short straight line portion (TP) and at a predetermined angle (&#x3b8;) with respect to the long straight line portion (LP) and has approximately same length as the short straight line portion (TP), wherein an acute angle portion (TG) which is formed by the short straight line portions (TP) and (TP), and acute angle portions (TGTGand TG) each having approximately same shape as the acute angle portion (TG) are succeeding in the opposite direction of the arrow X to the vicinity of a feeding point (P).

Growing community of inventors

Tokyo, Japan

Taiga Matsushita