Patent ID: 8142866
Filing Date: 2012-03-27
Classification: B41M,B60K,G01D,Y10T

Abstract:
1. A display panel comprising: a resin substrate; and a printed layer formed on at least a part of the resin substrate by inkjet printing, wherein the printed layer comprises cured products of UV-curable inks containing UV-curable monomers which are polymerized and cured by UV irradiation and the UV-curable ink contains a monofunctional monomer and a polyfunctional monomer as the UV-curable monomers, and the printed layer has at least the two cured products having different pencil hardness values which are formed by a low concentration polyfunctional monomer ink containing the polyfunctional monomer having an amount of 5 parts by weight or less relative to 100 parts by weight of the UV-curable monomers, a high concentration polyfunctional monomer ink containing the polyfunctional monomer in an amount of 10 parts by weight or more in 100 parts by weight of the UV-curable monomers, the display panel has a pressed part where at least a part of the display panel is pressed by another member and the display panel is used in an automotive instrument panel, the printed layer has the cured product formed from the high concentration polyfunctional monomer ink, at least at the pressed part, the surface of the display panel has a graphical design part formed to comprise scales and characters and formed on the surface of the display panel, the graphical design part being composed of the printed layer, the display panel is held inside the casing and has a pressed part being pressed by the casing when the display panel is held inside the casing, the pressed part being at least part of the display panel, and the printed layer comprising the cured products has a pencil hardness value, and the pencil hardness value at the pressed part being set to be relatively higher than the pencil hardness value at a part of the display panel, the part of the display panel being except for the pressed part.