JPH0748533B2 - Thin electronic devices - Google Patents

Description

Description: [Object of the Invention] (Field of Industrial Application) The present invention relates to a thin electronic device including an electronic component such as an IC chip, such as an IC card.

(Prior Art) In recent years, with the development of precision electronic technology and processing technology, electronic devices have been made smaller and thinner, and for example, calculators and the like have come to be manufactured in card form. In addition, recently, an IC card has been developed which is far superior to conventional magnetic cards in terms of information storage capacity and security. Furthermore, not only information is stored in the IC card, but also a multi-function IC card that has added functions such as arithmetic functions has been developed.

The multifunction IC card as such a thin electronic device is the third
There is one as shown in FIG. 4 and FIG.

In FIG. 1, reference numeral 1 is a substrate in which electronic components such as IC chips are embedded, and an outer frame 2 is arranged on the outer peripheral side of the substrate 1. A pair of outer plates 3 are arranged on both upper and lower surfaces of the outer frame 2 so as to sandwich the outer frame 2, and the outer frame 2 and the outer plate 3 are bonded to each other.

On the outer side of the outer plate 3, a protective sheet 4 made of a synthetic resin and designed by the issuer is adhered and laminated with an adhesive.

However, such an IC card is inserted into a reading / writing device when the IC card is used, or stored in a card case when not in use. Therefore, if the IC card is used for many years, the edge of the protection sheet 4
There is a problem that 4a is pushed by a finger, rubbed by a reading / writing device, a card case, or the like, and the outer peripheral portion of the protective sheet 4 is gradually turned off and peeled off from the outer plate 3.

(Problems to be Solved by the Invention) As described above, when the IC card is used for a long time, the outer peripheral portion of the protective sheet 4 is flipped off and peeled off from the outer plate 3. Focusing on the problem,
It is intended to form a convex portion in the thickness direction of the protective sheet on the main body outside the outer shape of the protective sheet to prevent the outer peripheral portion of the protective sheet from being turned over and peeled off.

[Structure of the Invention] (Means for Solving Problems) In order to solve such problems, according to the present invention, a main body having an electronic component built therein and an outer shape smaller than the outer shape of the main body are used. The protective sheet is laminated on the main body, and a convex portion is formed in the thickness direction of the protective sheet on the main body outside the outer shape of the protective sheet.

(Function) Since the convex portion is formed in the thickness direction of the protective sheet on the main body outside the outer shape of the protective sheet, it is the convex portion that the end portion of the protective sheet is pushed by a finger or rubbed by the device or the case. Is prevented by.

(Example) Hereinafter, the present invention will be described with reference to the drawings. 1 and 2 are views showing an embodiment of a thin electronic device according to the present invention, that is, a multifunction IC card.

First, the configuration will be described.

In the figure, 11 is a substrate of a multi-function IC card, and inside the substrate 11, an IC chip (not shown) as an electronic component and the like are embedded. Further, a pair of outer plates 12 and 13 made of stainless steel are arranged on both upper and lower sides of the substrate 11 to protect the substrate 11 and sandwich the substrate 11. The upper outer plate 12 is provided with a connection terminal 14 for contacting a contact member of the reading / writing device to send and receive data, a key 15 for data input, and a display unit 16 for displaying a calculation result. ing.

The outer peripheral portions 12a and 13a of the outer plates 12 and 13 are bent and joined in a stepwise manner toward the opposite sides. This outer peripheral portion 12a,
An outer frame 17 made of a substantially rectangular synthetic resin is formed on the outer peripheral portion 1a of 13a.
It is attached so that 2a and 13a are sandwiched in the thickness direction. On the outer side of the outer plate 12, a protective sheet 18 having a smaller outer shape than the outer plate 12 and made of a synthetic resin and designed by the issuer is adhered and laminated with an adhesive. The outer frame 17 outside the outer shape of the protective sheet 18 has the protective sheet 18
In the thickness direction of the protective sheet 18, there is formed a convex portion 17a having substantially the same height as the thickness of the protective sheet 18 and a rounded outer end side.
The substrate 11, the outer plates 12 and 13, and the outer frame 17 together constitute a main body 19 of the multifunction IC card.

Next, the operation will be described.

Since a convex portion 17a is formed in the thickness direction of the protective sheet 18 on the outer frame 17 outside the outer shape of the protective sheet 18, the multifunctional I
When inserting the C card into the reading / writing device,
The end portion 18a of the protective sheet 18 is pressed by a finger, read /
The protrusion 17a prevents the writing device from rubbing. Also, when the multifunction IC card is stored in the card case, the convex portion 17a prevents the end portion 18a of the protective sheet 18 from being rubbed by the card case as well.

Therefore, the outer peripheral portion of the protective sheet 18 is turned over,
The peeling from 12 is prevented, and as a result, the durability of the multi-function IC card can be improved.

Although the multifunctional IC card has been described as a thin electronic device in the above-described embodiment, it is needless to say that the invention can be applied to a card-like calculator.

As described above, according to the present invention, since the convex portion is formed in the thickness direction of the protective sheet on the main body outside the outer shape of the protective sheet, the end portion of the protective sheet is pushed by the finger. It is prevented by this convex portion that it is scratched by the device or the case. Therefore, the outer periphery of the protective sheet is turned over,
It can prevent peeling from the main body.

[Brief description of drawings]

1 and 2 are views showing an embodiment of a thin electronic device according to the present invention, FIG. 1 is a plan view of the thin electronic device, and FIG. 2 is a line II-II in FIG. It is an expanded sectional view. 3 and 4 are views showing a conventional thin electronic device, and FIG. 3 is a plan view of the thin electronic device.
The drawing is an enlarged sectional view taken along line IV-IV in FIG. 18… Protective sheet 19… Main body

Claims (1)

[Claims] 1. A protective sheet having a main body having an electronic component built-in and a protective sheet having an outer shape smaller than that of the main body and laminated on the main body, wherein the main body outside the outer shape of the protective sheet has a protective sheet. A thin electronic device characterized in that a convex portion is formed in the thickness direction of the.