The present invention relates to a light absorption layer composition for blackening a metal surface of a metal mesh for a touch panel, and a light absorption layer forming method and, more specifically, to a light absorption layer composition characterized by comprising a mixture of an oxidizing agent, a stabilizer, a wetting agent, a complexing agent, and pure water (deionized water), and a light absorption layer forming method using the light absorption layer composition. According to the present invention, the composition is capable of blackening a conductive metal surface of a metal mesh formed at the upper side of a transparent substrate such as a glass substrate or a transparent plastic substrate of at least one kind selected among polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polycarbonate (PC).;COPYRIGHT KIPO 2014
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