Method of mounting combination-type IC card

• US 20040062012A1
• Filed: 09/22/2003
• Published: 04/01/2004
• Est. Priority Date: 09/27/2002
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Murohara, Masaru
• Granted Patent: US 6,867,981 B2
• Time in Patent Office: Days
• US Class Current: 361/737
• CPC Class Codes: G06K 19/0726 the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07769 the further communication means being a galvanic interface, e.g. hybrid or mixed smart cards having a contact and a non-contact interface
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48227 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01046 Palladium [Pd]
• CPC Class Codes: H01L 2924/19041 being a capacitor

Abstract

The invention is to set a resonance frequency to various resonance frequencies by cutting a signal line which connects a tuning capacitor for trimming and an antenna currently with a milling step making a hole for mounting an IC module.

Claims

1. A method of mounting a combination-type IC card having a tuning circuit including an antenna and at least one tuning capacitor for trimming in an antenna card and an IC module including LSI, which is electrically connected to the tuning circuit and mounted on the antenna card, and a contact portion connected to an external device, a resonance circuit including the tuning circuit and LSI, comprising:

a milling step of making a hole in which the IC module is mounted in the antenna card;

a trimming step of setting a resonance frequency to various resonance frequencies currently with the milling step by cutting a signal line which connects the tuning capacitor for trimming and the antenna; and

an implanting step of mounting the IC module into the hole after the trimming step.

2. The method according to claim 1, wherein the signal line to be trimmed is exposed in forming a rectangular hole, in which the IC module is mounted, in the antenna card through the milling step.

3. The method according to claim 1, wherein the signal line to be cut is exposed at a side different from a side where both end terminals of the antenna are exposed in forming a rectangular hole, in which the IC module is mounted, in the antenna card through the milling step.

4. The method according to claim 1, wherein the signal line to be cut is provided at a position where the signal line is exposed after milling through the milling step.

5. A mounting method of a combination-type IC card according to claim 1, wherein the trimming step carries out trimming by cutting a part of an exposed pattern exposed after milling through the milling step.

6. A combination-type card comprising:

an antenna card incorporating an antenna terminal and an LSI; and

an IC module held in the antenna card and including a contact unit and an antenna-connecting terminal electrically connected to the antenna terminal, the contact unit being connected to the LSI and to be connected to an external device,

wherein the antenna card comprises a plurality of tuning capacitors connected by signal lines to the antenna terminal, the antenna and the tuning capacitors constitute a turning circuit, the turning circuit and the LSI constitute a resonant, and a resonance frequency of the resonant circuit is adjusted by cutting at least one of the signal lines.

7. The combination-type card according to claim 6, wherein at least one of the signal lines is cut when a hole is made in the antenna card to hold the IC module.