Patent ID: 9645496
Date: 2017-05-09
CPC Classifications: G03F

Claim:
1. A maskless method of printing patterns in a photoresist layer on a moving substrate, comprising: a) illuminating an image transducer with illumination light that defines one or more exposure doses to form patterned light using an array of configurable pixels of the image transducer that define a moving image-transducer pattern; b) reflecting the patterned light from a resonant scanning mirror to an objective lens to form an exposure pattern in the photoresist layer at a select position relative to an existing exposure pattern based on the one or more exposure doses; and c) scanning the resonant scanning mirror to scan the patterned light while synchronizing the moving of the image-transducer pattern with the moving of the substrate during the one or more exposure doses such that the exposure pattern has an amount of smearing that is one third of a pixel image or less, wherein the resonant scanning mirror has an oscillation angle that varies as a sinusoid over an angular range, and including limiting the angular range used for the one or more exposure doses to a substantially linear regime of the sinusoid so that the select position of the exposure pattern formed in the photoresist layer varies linearly with the oscillation angle and with time.