3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Michiru Hata

Albert I Everaerts

Tetsu Kitamura

Arthur L Kotz

Yoshinori Araki

Yuji Hiroshige

Hiroaki Yamaguchi

Naoyuki Toriumi

Mary B Poppendieck

To provide an anisotropically conductive adhesive composition that can be rapidly cured at a low temperature during thermocompression bonding and has a sufficiently long working life, while also exhibiting excellent mutual connection stability after connection between substrates. The anisotropically conductive adhesive composition comprises an epoxy resin comprising a cycloaliphatic epoxy resin and a glycidyl group-containing epoxy resin, an ultraviolet activatable cationic polymerization catalyst and a cationic polymerization retarder, and conductive particles.

Anisotropically conductive adhesive composition and anisotropically conductive adhesive film formed from it

An optical fiber ( ) is disclosed which emits light radially along its peripheral surface ( ). A light extractor provided on the core ( ) includes both a reflective light extraction element ( ) and a transmissive light extraction element ( ) in order to increase the light emission luminance from the optical fiber, the transmission light extraction element is preferably a light extracting film ( ) comprising a plurality of integrally formed light transmissive projections ( ) closely adhered to the core ( ) and through which light is extracted. Gaps ( ) between the film ( ) and the core ( ) are formed by the projections ( ). The optical fiber may be used as a linear light source.

Optical fiber linear light source

A spot light fiber ( ) which comprises a core ( ) which can transmit the light entered from an incident end towards an output end ( ) and output the light from the output end, and a light leaking means ( ) positioned along the peripheral direction on the external peripher face near the output end of the core; characterized in that the light leaking means is formed by using a light diffusive-transmissive light leaking film.

Spot light fiber and illuminating apparatus

The present invention is directed to a front light extraction tape for coupling light out of a light guiding device. The tape has a flexible, light transmissive outer portion and a light coupling element secured to a lower surface of the outer portion without using adhesive. An input surface of the light coupling element is contactable with an output surface of the light guiding device for receiving light therefrom. A reflecting surface of the light coupling element is aligned so as to reflect light received into the light coupling element through the light transmissive outer portion. The light coupling element may be formed integrally with the outer portion so as to avoid a material interface between the light coupling element and the outer portion.

Front light extraction film for light guiding systems and method of

A heat-activatable adhesive comprising an acrylic copolymer, which copolymer comprises a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol having a Tg of about 0.degree. C. or lower; a monomer consisting of an acrylate or methacrylate ester of an alcohol having a Tg of at least about 5.degree. C.; and a functional monomer. Selected embodiments include a retroreflective article comprising a film having a substantially flat surface and a structured surface, the structured surface comprising a plurality of precisely shaped projections, a colored layer disposed on the structured surface and adhered thereto in a plurality of discrete locations, and a heat-activatable adhesive layer disposed on the colored layer.

Heat-activatable adhesive composition

A method for forming retroreflective sheeting comprising a binder layer having a first surface with protrusions thereon and a plurality of retroreflective elements partially embedded in the surface, wherein the method comprises forming the binder layer in a first profile, embedding the retroreflective elements therein, and then activating that binder layer such that it is restored to the first profile via shape memory.

Growing community of inventors

Sagamihara, Japan

Michiru Hata