| 摘要 |
Provided is a method of forming a color filter of an image sensor. The method is achieved by forming a trench region in a predetermined area after forming a top metal layer of a pixel of the image sensor, and forming the color filter in the trench region. A part of the color filter is formed to be convex through heat treatment to be used as a microlens. Since the color filter is formed in the trench region, optical cross talk is prevented and optical efficiency is improved.
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