Display panel, to processes for its preparation and composition of ink which is used by the process for its preparation

Display panel which comprises a resin substrate (15) and an electrode formed on at least a portion of the resin substrate by ink jet printing printed layer (2), wherein the printed layer (2) cured products (21, 22, 23, 24, 25) comprises UV-curing inks containing UV-curable monomers polymerized by UV irradiation and cured, and wherein the UV-curable ink, a containing monofunctional monomer and a polyfunctional monomer as the UV-curable monomers, and the printed layer (2) has at least two cured products (21, 22, 23, 24, 25) with different pencil hardness values, the concentrated by a low polyfunctional monomer ink the polyfunctional monomer in an amount of 5 weight percent or less in 100 parts by weight of contains UV-curable monomers, and a high concentration polyfunctional monomer, which contains the polyfunctional monomer in an amount of 10 parts by weight or more in 100 parts by weight of the UV-curable monomers are formed, the display panel (1) has a pressing part (29) in which at least a portion of the display panel is pressed by another element, and wherein the display panel in a vehicle instrument panel (5) is used, and the printed layer (2) the cured product (21, 22, 23, 24, 25), which is formed of the high concentration polyfunctional monomer, at least in the pressing member (29), and the surface of the display panel (1) a graphically the effect shaped part (151) to include scales or characters, wherein the graphically designed part is formed from the printed layer, the display panel (1) within a housing (55) is held, wherein the pressing member (29) is pressed by the housing, and wherein the pencil hardness value at the pressed part (29) is selected in such a way to be relatively higher than the pencil hardness value at another part of the display panel.