Patent ID: 7738071
Filing Date: 2010-06-15
Classification: G02F

Abstract:
1. A method of forming fine pattern, comprising: forming a photo-resist pattern on a conductive layer, the photo-resist pattern having a minimum line width corresponding to an exposure resolution of an exposure device; and over-etching the conductive layer by an etching process using the photo-resist pattern as a mask to form an electrode pattern having a line width narrower than the exposure resolution of the exposure device, wherein the step of over-etching the conductive layer performs etching so that a etching CD (Critical Dimension) bias between the photo-resist pattern and the electrode pattern is approximately 0.4˜3 μm, wherein a temperature of the etching process is between about 50° C. and about 70° C., and wherein an etching process time is between about 100 seconds and about 300 seconds.