IC TAG AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: SHIMAI TOSHIHARU, MIYAGI YOSHIHIRO, TOMITA JUNSHI, MURAYAMA MIKI
• Format: Patent
• Language: English; Japanese
• Published: 14.12.2023
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; CALCULATING; COMPUTING; COUNTING; ELECTRICITY; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

To provide an IC tag which can prevent damage of an antenna even when repeatedly receiving external force such as bending, and a method for manufacturing the same.SOLUTION: An IC tag includes an IC chip 2, an antenna 3 for electrically transmitting/receiving information stored in the IC chip 2, a sheet-like base material 1 for supporting the IC chip 2 and the antenna 3, and a protective layer 4 which is a dielectric body covering the IC chip 2 and the antenna 3 between the base material 1 and the protective layer 4 and is made of a resin, wherein a tensile elastic modulus [GPa] of the base material 1 and a tensile elastic modulus [GPa] of the protective layer 4 are regulated within a region surrounded by five lines indicated by the following expressions (1), (2), (3), (4) and (5) with the tensile elastic modulus of the base material 1 as an X axis and the tensile elastic modulus of the protective layer 4 as a Y axis. Expression (1): X=0.8, Expression (2): X=8, Expression (3): Y=0.03, Expression (4): Y=X0.4, and Expression (5): Y=0.01×X2.SELECTED DRAWING: Figure 2 【課題】屈曲などの外力を繰り返し受けてもアンテナの破損を防止することができる、ＩＣタグ及びその製造方法を提供する。【解決手段】本発明に係るＩＣタグは、ＩＣチップ２と、ＩＣチップ２に格納される情報を電気的に送受信するアンテナ３と、ＩＣチップ２及びアンテナ３を支持するシート状の基材１と、基材１との間で、ＩＣチップ２及びアンテナ３を覆う誘電体である樹脂製の保護層４と、を備え、基材１の引張弾性率[ＧＰａ]及び保護層４の引張弾性率[ＧＰａ]が、基材１の引張弾性率をＸ軸、保護層４の引張弾性率をＹ軸として、次式（１）（２）（３）（４）（５）で示す５つの線で囲まれる領域内に規定される構造である。Ｘ＝０．８ ...（１）Ｘ＝８ ...（２）Ｙ＝０．０３ ...（３）Ｙ＝Ｘ０．４...（４）Ｙ＝０．０１×Ｘ２...（５）【選択図】図２