Patent ID: 8343365
Filing Date: 2013-01-01
Classification: G03F

Abstract:
1. A method for producing a color filter, comprising: a first colorant-containing layer forming step of forming a first colorant-containing layer over a support; a first photoresist layer forming step of forming a first photoresist layer on the first colorant-containing layer; a first image forming step of removing the first photoresist layer in a first region, thereby forming a first image on the first colorant-containing layer; a first etching step of etching the first colorant-containing layer in the first region into the form of the first image formed in the first image forming step by dry etching, to form a first concave region in the first colorant-containing layer; a first photoresist layer removing step of removing the first photoresist layer remaining after the first etching step; a second colorant-containing layer forming step of forming a second colorant-containing layer different from the first colorant-containing layer over the first concave region formed in the first colorant-containing layer and also over remaining portions of the first colorant-containing layer, wherein the second colorant-containing layer is formed by embedding a curable composition into the first concave formed in the first colorant-containing layer; a second photoresist layer forming step of forming a second photoresist layer over the second colorant-containing layer; a second image forming step of removing the second photoresist layer in a second region; a second etching step of etching both the second colorant-containing layer and the first colorant-containing layer in the second region during the second etching step, thereby forming a second concave region at which the support is exposed; a second photoresist removing step to remove the second photoresist layer remaining after the second etching step; a third colorant-containing layer forming step of forming a third colorant-containing layer different from the first and second colorant containing layers in at least the second concave region; and a step of removing colorant-containing layers to leave only a colorant-containing layer nearest to the support, thereby providing a color filter, wherein the color filter has the first region formed from the second colorant-containing layer and the second region formed from the third colorant-containing layer, wherein the first and second concave regions do not overlap each other.