Methods of forming optical devices
AssigneeRohm and Haas Electronic Materials LLC
InventorsJames Shelnut, Matthew Moynihan, Luke Little
Life of this patent
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Abstract
Provided are methods of forming an optical device. The methods involve: (a) applying over a first substrate a dry-film including: a carrier substrate and a first polymeric layer over the carrier substrate; (b) forming a second polymeric layer over the first substrate by a method that includes coating over the first substrate a liquid composition; and (c) patterning the first polymeric layer and/or the second polymeric layer. Also provided are methods of forming printed wiring boards having optical functionality. The invention finds particular applicability in the optoelectronics industry.
Claims10
A method of forming an optical device, comprising:
- (a) applying over a first substrate a dry-film comprising:
- a carrier substrate and a first polymeric layer over the carrier substrate;
- (b) forming a second polymeric layer over the first substrate by a method comprising coating over the first substrate a liquid composition;
- and
- (c) patterning the first polymeric layer and/or the second polymeric layer.
A method of forming a printed wiring board having optical functionality, comprising:
- (a) providing a waveguide first clad layer over a printed wiring board substrate, wherein the first clad layer comprises units of the formula (R1SiO1.5), wherein R1 is a substituted or unsubstituted organic group;
- (b) applying over the first clad layer a dry-film comprising:
- a carrier substrate and a waveguide core layer over the carrier substrate, the core layer comprising units of the formula (R2SiO1.5), wherein R2 is a substituted or unsubstituted organic group, and wherein R1 and R2 are the same or different;
- (c) patterning the core layer to form a core structure;
- and
- (d) forming a waveguide second clad layer over the first clad layer and the core structure by a method comprising coating over the first clad layer and the core structure a liquid polymer comprising units of the formula (R3SiO1.5), wherein R3 is a substituted or unsubstituted organic group and is the same as or different from R1 and/or R2.
Dependencies are inferred from the claim text.