Patent ID: 8815477
Filing Date: 2014-08-26
Classification: G02B,G03F

Abstract:
1. A color filter manufacturing method for forming a filter segment and a black matrix by repeating at least: coating a substrate with a photosensitive resin layer made of a photosensitive resin composition; curing the photosensitive resin layer on the substrate by pattern exposure; removing an unexposed (uncured) portion of the photosensitive resin layer by development of the photosensitive resin layer; and thermosetting the developed photosensitive resin layer, in this order a plurality of number of times, wherein in the curing, a laser is used as a light source, a plurality of photomasks arranged along the widthwise direction of the substrate and each having a pattern region smaller than a whole exposure region on the substrate are used as photomasks for pixel formation, the substrate is fed in a longitudinal direction of the substrate during exposure, and proximity exposure is performed by repetitively emitting the laser a plurality of number of times via the photomasks such that a cumulative exposure amount is 1 to 150 mJ/cm a dimension or array of a same pattern formed on the photomask is randomized on the order of a few microns or submicrons.