A carbon nanotube (“CNT”) composition includes CNTs, a dispersing agent containing a reactive functional group, and at least one kind of dispersion medium. A CNT layer structure includes a substrate and a CNT layer disposed on the substrate, the CNT layer including the CNT composition including the CNTs arranged in a network-shape, and an organic material adsorbed to the CNTs and chemically bonded to the substrate. A liquid crystal display device includes the CNT layer structure. A method of manufacturing the CNT layer structure uses the CNT composition. A method of manufacturing the liquid crystal display device includes forming a pixel electrode on a passivation layer, by using the method of manufacturing the CNT layer structure.
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