Patent ID: 9076093
Filing Date: 2015-07-07
Classification: G06K

Abstract:
1. A metal card comprising: a metal card sheet made of duralumin; an anodized layer formed by anodizing a surface of the metal card sheet; and a contact IC chip attached on a first etched area through an adhesive, the first etched area being formed on a front surface of the metal card sheet on which the anodized layer is formed, wherein a background color or pattern of the metal card is determined according to a composition of electrolyte of the anodizing for forming the anodized layer, wherein the first etched area is formed as a shape configured to receive the contact IC chip by performing etching before the anodizing, or the first etched area is formed as a shape configured to receive the contact IC chip by performing etching after the anodizing and performing anodizing the etched portion, and wherein the shape of the first etched area is a step shape having a shallow edge portion and a deep central portion.