Patent ID: 9101956
Filing Date: 2015-08-11
Classification: B05D,B42D,G02B,G02F,G03F,G11B

Abstract:
1. A method of making a patterned film, comprising: providing a first film having a first reflective characteristic, the first film also having a first absorption characteristic suitable to, upon exposure to a first radiant beam, absorptively heat a portion of the first film by an amount sufficient to change the first reflective characteristic to a second reflective characteristic by a change in birefringence, and the first film comprising a first group of layers arranged to selectively reflect light by constructive or destructive interference to provide the first reflective characteristic; providing a second film having a first detectable characteristic that changes to a different second detectable characteristic upon exposure to a second radiant beam, and the second film comprising a second group of layers; directing the first radiant beam preferentially at a second zone rather than a first zone of the first film to change the first reflective characteristic to the second reflective characteristic in the second zone by a change in birefringence so as to convert the first film to a patterned mask; and placing the first film in proximity to the second film, using the patterned mask to pattern the second radiant beam, and directing the patterned second radiant beam at the second film to change the first detectable characteristic to the second detectable characteristic at selected portions of the second film, wherein the change from the first reflective characteristic to the second reflective characteristic is substantially attributable to a change in birefringence of at least some of the first group of layers of the first film.