National Institute of Advanced Industrial Science and Technology

Tokusen Kogyo Co., Ltd.

Sumitomo Seika Chemicals Co., Ltd.

National Institute of Advanced Industrial Science

Manabu Yoshida

Takeo Ebina

Toshihide Kamata

Taiki Nobeshima

Sei Uemura

Naoki Shirakawa

Takeshi Kobayashi

Takashi Nakamura

Seiji Bando

Hiromichi Hayashi

Hirobumi Ushijima

Shin Sumimoto

Kenichi Nomura

Takehito Kozasa

Nobuko Fukuda

Masato Yamashita

Toshihiro Takeshita

Kazunori Kuribara

Noriko Iwase

Daisuke Misho

Kazunori Kawasaki

Provided is a sheet-shape electrostatic sound pressure-electrical signal conversion device that is three-dimensionally deformable and has a low drive voltage. The sound pressure-electrical signal conversion device includes a polymer sheet sandwiched between a pair of electrodes facing each other, the polymer sheet is a dielectric film, at least one of the electrodes includes an insulating flexible substrate having a plurality of through-holes and a plurality of conductive fibers having one end fixed to the flexible substrate with a pressure sensitive adhesive, electrical conduction in an in-plane direction is formed by contact between the conductive fibers, the conductive fibers are vibrated by giving an electrical signal to the pair of electrodes or the conductive fibers are vibrated by receiving sound pressure to cause the pair of electrodes to output an electrical signal.

Sound pressure-electrical signal conversion device and conversion method for same

A stretchable raised electrode having a stretch property that can be used as a biological electrode for collecting biological signals while being pressed against a body is provided, and a method of manufacturing the stretchable raised electrode is provided. This raised electrode is a raised electrode formed by raising a surface of a sheet material having the stretch property. This raised electrode includes: a resin layer configured to be stretchable to follow the surface of the sheet material; and a plurality of conductive fibers each having an inserted portion, one end of which is inserted into the resin layer. The conductive fibers that are adjacent to one another are electrically in contact with one another at non-inserted portions into the resin layer, and the conductive fibers are formed in the resin layer so as to have such a density as causing an in-plane isotropic electric conductivity of an electrode region of the sheet material in which the conductive fibers are formed. This raised electrode can be obtained by an electrostatic spraying method.

Stretchable raised electrode and method of manufacturing thereof

A stretchable contractible wiring sheet includes: stretchable contractible first elastomer sheet; stretchable contractible second elastomer sheet facing and bonded on the first elastomer sheet, and lead that has a transverse section having any cross-sectional shape selected from circular shape, elliptical shape, and track shape, and is plastically deformed in wavy shape periodically curving along longer direction, the lead being interposed between the first elastomer sheet and the second elastomer sheet in a manner that height direction of waves in wavy shape is along in-plane direction of facing surfaces of the first elastomer sheet and second elastomer sheet. The wiring sheet that can be produced easily at low costs, has high flexibility and durability, and undergoes small resistance value change along with stretching and contracting, and stretchable contractible touch sensor sheet.

Stretchable wiring sheet and stretchable touch sensor sheet

A stretchable electrically-conductive sheet according to the present invention includes an elastomer sheethaving an adhesive layer corresponding to a wiring region with a predetermined pattern formed on a front surface of the elastomer sheet, and also includes electrically-conductive fiber materialseach having a predetermined diameter and a predetermined length. When the elastomer sheetis stretched or bended, the electrically-conductive fiber materials relatively move maintaining mutual electrical continuity so as to maintain the electrical continuity in the wiring region. Accordingly, it is possible to achieve a low-cost stretchable electrically-conductive circuit having excellent stretchability, bendability, and durability.

Stretchable electrically-conductive circuit and manufacturing method therefor

Provided are an element applicable to a high-precision, high-sensitivity pressure detecting sensor and switch, a manufacturing method for the element; and a sensor, an electronic circuit, and an input device that include the element. The electret element of the present invention has a semiconductor sandwiched between a pair of electrodes, and an electret film disposed at a location opposite to the semiconductor via a gap. The electret element of the present invention may be structured so that the semiconductor contacts with the electret film, or so as to have micro-sized gaps therebetween. The electret film is semi-permanently kept in a positively or negatively charged state. By having a structure in which the electret film can contact with or approach the semiconductor, an amount of electric currents flowing between the pair of electrodes can be controlled.

Electret element and manufacturing method therefor, sensor, electronic circuit, and input device

The invention provides a process and an apparatus for producing a high quality electronic component by reducing sagging at pattern side walls, which may occur when patterns of a wiring, an electrode, etc. are printed by a screen printing process using an electroconductive paste, an insulation paste, or a semiconductor paste, and reducing a mesh mark on the patterns of a wiring, an electrode, etc., or a full solid surface film, as well as a pattern formation process, by which screen printing can be applied and double face printing can be conducted with the number of process steps less than a conventional process. A pattern is formed by that a pattern is printed on a blanket having a surface comprising polydimethylsiloxane using an electroconductive paste, an insulation paste, or a semiconductor paste by a screen printing process, and the pattern is transferred from the blanket to a printing object.

Method for forming pattern

Provided are a conductive substrate which can be produced from inexpensive materials at a lower temperature than those for conventional substrates, and a process for producing the conductive substrate. The conductive substrate comprises a substrate () and a conductive pattern () provided on the substrate (), wherein the conductive pattern (), except on a surface and in a vicinity thereof on a side opposite to the substrate side, entirely has a structure comprising a binder () and fine aluminum grains () dispersed therein, and on the surface and in the vicinity a surface metal aluminum layer () is formed in which the fine aluminum grains () are spread with a roller to form a conductive junction connecting the fine aluminum grains to each other.

Conductive substrate and process for producing same

A conductive pattern forming film provides a pattern formed on a film substrate having flexibility by pressurizing, under heating, a conductive paste in which powder or fine particles of metal or semiconductor are dispersed and filled. A conductive pattern forming apparatus comprises a sample installation table having a flat placement surface, and a driving body for pressure application which is placed in a manner facing the placement surface and movable, wherein the driving body for pressure application is equipped with a support which is constituted by a flat metal panel having metal spheres along its bottom face.

Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film

A thin-film transistor includes a substrate (), a gate electrode () provided on a portion of the substrate, an insulation layer () arranged to cover the gate electrode and the substrate, a source or drain () provided on the insulation layer in a region corresponding to a region of the gate electrode, a semiconductor layer () arranged to cover the source or drain () and the insulation layer, a drain or source () provided on the semiconductor in a portion of a region corresponding to a region of the source or drain () that overlaps with the gate electrode, and a channel () formed between the source or drain () and the drain or source () and having a length defined by a film thickness of the semiconductor layer ().

Growing community of inventors

Tsukuba, Japan

Manabu Yoshida