Sumitomo Bakelite Company Limited

Promerus, Lcc

Nobuo Tagashira

Larry Funderburk Rhodes

Osamu Onishi

Pramod Kandanarachchi

Haruo Ikeda

A heat radiating substrate includes an insulating layer () (insulating substrate) and a circuit pattern () of a metal provided on the insulating layer () in direct contact with the insulating layer (), in which a contour line of the circuit pattern () has a corner portion () that forms a curved line exhibiting a circular arc with a radius of 0.2 mm or more and 5 mm or less when viewed in a top view.

Circuit board

A heat radiating substrate () includes an insulating layer () and a circuit pattern () of a metal formed on the insulating layer () in direct contact with the insulating layer (), in which a side surface (that is, metal layer side surface ()) of the circuit pattern () has a region in which an angle θ formed by a surface (insulating layer upper surface (a)) of the insulating layer () (insulating substrate) and a tangential line L at a middle portion (X) in a height direction in a cross-sectional view perpendicular to an extending direction of the metal is 80 degrees or more and 100 degrees or less.

Copolymers and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such copolymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such and maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.

Self-imageable layer forming polymer and compositions thereof

Embodiments in accordance with the present invention provide polymers for forming layers/films useful in the manufacture of a variety of types of optoelectronic displays. Such embodiments also provide compositions of such polymers for forming such layers/films where the formed layers/films have high transparency over the visible light spectrum.

Growing community of inventors

Tokyo, Japan

Nobuo Tagashira