▎ 摘　　要

NOVELTY - The method involves preparing the substrate (110) made of polymer material having flexibility. Interconnection grooves (120) are formed on top surface of substrate to form desired circuit pattern (P). The substrate is soaked into graphene dispersed solution (G), after formation of the grooves. The graphene dispersed solution coated on the substrate is infiltrated into the groove. Finally, the graphene dispersed solution is evaporated to form printed circuit board. USE - Method for manufacturing printed circuit board installed in display device (all claimed). ADVANTAGE - The printed circuit board having improved mechanical property can be manufactured at low cost. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a printed circuit board; and (2) a display device. DESCRIPTION OF DRAWING(S) - The drawing shows an explanatory view showing the manufacturing process of printed circuit board. Substrate (110) Interconnection groove (120) Graphene dispersed solution (G) Circuit pattern (P)