JPS6242890A - Integrated circuit card - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an IC card, and particularly to an improvement in the external connection terminal portion thereof.

[Conventional technology]

Here, an IC card is used in place of a conventional card with a magnetic stripe, etc., and has a memory IC, CP [J, and other semiconductor pieces built-in in the base of the card, and has a conventional magnetic stripe. In addition to being able to have a storage capacity several orders of magnitude higher than that of an attached cart, it can also be equipped with arbitrary arithmetic functions.

FIG. 4 is a cross-sectional configuration diagram showing the main parts of such an IC card. In the figure, 6 is a card base made of resin such as glass epoxy, and 2 is a print housed in this card base 6. The board 10 is an IC module fixed on this board 2, which includes a memory IC and a CP [
IC chip 1 such as J, wiring 3. and a precoat section 4 for sealing the IC chip 1 and the wiring 3 with resin. Further, 5a and 5b are laminated films formed on both sides of the card base 60, and 7 is an external connection terminal connected to an electrode of a card reader (hereinafter referred to as a reader).

[Problem that the invention seeks to solve]

In the conventional IC card as mentioned above, the connection terminal 7
Since the terminals 7 are provided exposed to the outside, there is a problem that the terminals 7 easily become dirty, resulting in poor contact and malfunction. Furthermore, if the terminal 7 is touched by a person charged with static electricity, there is a problem that the internal IC chip will be damaged by static electricity.

The present invention was made to solve these conventional problems, and aims to provide an IC card that can prevent poor contact and electrostatic damage caused by dirty terminals and improve reliability. There is.

[Means for solving problems]

The IC card according to the present invention is provided with a protective cover covering the terminal portion over the terminal portion, and a conductive sheet is attached to the contact surface of the terminal portion of the protective cover.

[Effect]

In this invention, the terminal portion is prevented from becoming dirty by the protective cover, and static electricity generated by sliding of the protective cover is diffused to the outside of the card through the conductive sheet on the back surface of the cover.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a main part of an IC card according to an embodiment of the present invention, and in the figure, the same reference numerals as in FIG. 4 do not indicate the same or corresponding parts. 7 is a column connection terminal provided on the substrate 20 and connected to the electrode on the reader side; 1) is a protective cover provided above the terminal portion so as to cover the terminal 7;
This is slidable at the terminal 7-]-. The protective cover 1) is made of plastic or the like so as not to damage the terminals 7 when sliding, and has a protrusion Za that further protrudes from the surface of the IC car 1' on the surface of the counter. It is provided. 12 is this protective cover 1
), that is, the terminal contact surface, is a conductive sheet 12 attached to the terminal contact surface, and as shown in an enlarged view in FIG. It is attached so as to wrap around the rear end side part 1)b of the protective cover II. 13 is a spring that urges the protective cover 1) to be located at the terminal portion l-, that is, the protective cover 1) is in a closed state; 14 is a conductive member that receives this spring 13;

Next, the effects will be explained.

Normally, when this IC card is not inserted into the reader, it is in a closed state as shown in FIG. 1, and the terminals 7 are protected from external dust and the like. When the card is inserted into a reader (not shown), the protrusion 1)a of the protective cover 1) first comes into contact with a protrusion provided on the reader. When the card is further inserted into the reader, the protective cover 1) is brought into an open state against the spring force of the spring 13 due to the abutment of the projections, and the terminals 7 of the card are exposed to the outside. In this state, the electrode on the reader side comes into contact with the terminal 7, and signals are exchanged.

When the card is removed from the reader, the protective cover 1) is automatically closed by the spring 13 as shown in FIG.

In this embodiment, the terminal portion is covered by the protective cover 1) when the card is not in use.
It is possible to prevent the terminals 7 from becoming dirty due to lumps, etc., and therefore to prevent malfunctions due to poor contact, etc., which have been a problem with conventional IC cards. Furthermore, even if a person charged with static electricity holds this IC card, he or she will not directly touch the terminal 7, so that the internal IC chip will not be damaged by static electricity.

Here, the protective cover 1) needs to be made of plastic or the like so as not to damage the terminal 7, but since plastic is non-conductive, the protective cover 1) may slide and the sliding portion If static electricity is generated, there is a risk that the internal IC chip will be damaged by static electricity. However, in this embodiment, since the conductive sheet 12 is provided on the back surface of the protective cover 1), the static electricity generated by the sliding is absorbed by the conductive sheet 12, the spring 13. The electrostatic charge can be discharged to the outside through the conductive member 14, such as to the side of the filter, and therefore the internal IC chip will not be destroyed by the static electricity generated by the above-mentioned sliding.

Note that the present invention is not limited to the configuration of the above embodiment, and can also be applied to an IC card in which the terminal portion is provided at the end of the IC card, as shown in FIG. A similar effect can be obtained. Note that FIG. 3 shows a case where the protective cover 1) is in an open state and the terminals 7 are exposed.

〔Effect of the invention〕

According to the present invention, as shown in FIG. Poor contact due to dirt on the parts.

This has the effect of preventing electrostatic damage, etc., and providing an IC card with improved reliability.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of an IC card according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of the IC card, FIG. 3 is a diagram showing another embodiment of the present invention, and FIG. 4 is a sectional view of a conventional IC card. 6... Card base, 7... External connection terminal, 10...
・IC module, 1)...protective cover, 12...
conductive sheet. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) In an IC card having an IC chip built into the card base, a terminal section for exchanging information between the IC chip and the card reader, and a terminal section on the terminal section. An IC card comprising: a protective cover slidably provided to cover or expose; and a conductive sheet attached to a contact surface of the protective cover with the terminal portion.