Nitto-denko Corporation

Nitto Electric Industrial Co., Ltd.

Kaoru Aizawa

Michirou Kawanishi

Shinichi Komura

Masaya Adachi

Kunio Nagasaki

Yozo Oishi

Kiyohiro Kamei

Hiroomi Hanai

Tatsuya Kubozono

Naoki Okochi

Toshimitsu Okuno

Hiroki Ichikawa

Kyoichi Araki

Tatsuo Kurono

Toshiyuki Ohshima

A display device having: a light-emitting layer; a light-reflecting member disposed on a back surface of the light-emitting layer; a polarized light separating unitprovided so that light in a predetermined wavelength range corresponding to light emitted from the light-emitting layer is separated into two kinds of polarized light components by reflection and transmission; a polarizer; and a retarder, the polarized light separating unit, the polarizerand the retarderbeing disposed on a front surface side of the light-emitting layer.

Display device

A strippable pressure-sensitive adhesive and an adhesive material using the same are disclosed, adhesive comprising a highly elastic base polymer whose dynamic modulus of elasticity is in the range of from 250,000 to 10,000,000 dyne/cm.sup.2 at a temperature between ambient temperature and 150.degree. C. with a small rate of change with temperature, having incorporated therein a blowing agent, which adhesive reduces or loses its adhesiveness on expansion or blowing of blowing agent. The adhesive and adhesive material are easily re-applied, is capable of satisfactorily following the shape of an adherent during forming of the adherent, reduces its adhesiveness on heating, and is applicable to various adherents with excellent workability.

Strippable pressure-sensitive adhesive and adhesive material using the

A tracking resistant pressure-sensitive adhesive tape comprising an electrically insulating film having a comparative tracking index by an tracking resistant test of the IEC method of at least 400 V, a modulus of elasticity of from 20 to 1,200 kg/mm.sup.2, and a thickness of from 5 to 150 .mu.m, and having formed on one side thereof a pressure-sensitive adhesive layer.

Tracking resistant pressure-sensitive adhesive tape

An adhesive sheet comprising a substrate having formed on one surface or both surfaces thereof a rubber-like elastic layer, a heat-expandable layer, and an adhesive layer in the order from the substrate side.

Adhesive sheet

An electronic component carrier includes an elongated substrate having a series of electronic component-setting portions spaced from one another at a predetermined interval along the length of the substrate. The substrate has push bar-insertion holes formed therethrough and disposed respectively at the electronic component-setting portions. Adhesive layers are formed respectively on surfaces of the electronic component-setting portions. The electronic components are adapted to be bonded respectively to the electronic component-setting portions through the adhesive layers. A push bar is adapted to be inserted into the push bar-insertion hole so as to be engaged with the electronic component to release the same from the adhesive layer.

Electronic component carrier

An electronic component carrier includes a carrier tape having a series of through holes formed therethrough and spaced from one another at a predetermined interval along the length of the casrrier tape. An adhesive tape having an adhesive layer is bonded to one side of the carrier tape by the adhesive layer. The adhesive layer partially covers each of the through holes. A plurality of electronic components are received respectively in the series of through holes and are bonded to that portion of the adhesive layer partially covering the through holes, thereby holding the electronic components on the carrier tape. An area of adhesive contact between the adhesive tape and the carrier tape and an area of adhesive contact between the adhesive tape and the electronic component can be isolated from each other at least in the direction of the width of the carrier tape.

A polarizing film comprising (a) a polarizer and (b) a film formed on at least one surface of the polarizer from a member selected from the group consisting of thermoplastic polycarbonates, polysulfones, polyethersulfones, polyesters, polyamides and poly(estercarbonate)s' and having a retardation .delta. of about 500 nm or less with the retardation .delta. being calculated by the following equation:

Growing community of inventors

Osaka, Japan

Kaoru Aizawa