Rohm & Haas Electronic Materials LLC

Shipley Company LLC

Eternal Technology Corporation

Edgardo Anzures

Robert K Barr

Daniel E Lundy

James G Shelnut

Corey O'Connor

Philip D Knudsen

Thomas Charles Sutter

Edward J Brady

A mask is described for forming an image on a substrate. The mask may be selectively applied to a radiant energy sensitive material on the substrate. Actinic radiation applied to the composite chemically changes portions of the radiant energy sensitive material not covered by the mask. The mask and portions of the radiant energy sensitive material are removed using a suitable aqueous base developer. The mask is composed of aqueous base soluble or dispersible polymers and light-blocking agents.

Mask

Provided are methods of forming printed circuit boards having optical functionality. The methods involve applying a dry-film to a printed circuit board substrate and forming an optical waveguide over the dry-film. The invention finds particular applicability in the electronics and optoelectronics industries.

Methods of forming printed circuit boards having optical functionality

A polymer having &#x3b1;,&#x3b2; unsaturated groups and a group that generates a free radical when exposed to actinic radiation. The polymer may be self-cross-linking.

Functional polymer

A dry film photoresist includes a functional polymer. The functional polymer has &#x3b1;,&#x3b2;-unsaturated groups and groups that generate a free radical upon exposure to actinic radiation.

Dry film photoresist

A composition and method to reduce photolithographic residue and scum formation on a substrate or in a solution, and to reduce or prevent foam formation. The composition contains a diphenyl oxide compound in combination with an antifoam agent. The composition may be added to developer solutions and stripper solutions used in manufacturing printed wiring boards.

Photoresist processing aid and method

A composition and method to reduce or to prevent residue and scum formation on a substrate or in a solution. The composition contains an aromatic alkoxylate in combination with a polyol or ether or ester of a polyol. The composition also reduces or prevents foam formation such as in developing processes in the manufacturing of printed wiring boards.

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Westborough, MA, United States of America

Edgardo Anzures