JPH035633B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a card-shaped small electronic device, for example, a portable storage card having a built-in electronic circuit section such as a semiconductor memory for storing various data, calculation methods, etc.

BACKGROUND TECHNOLOGY AND PROBLEMS Recently, data and calculations stored on this card, such as portable record cards that store various data and calculation methods, etc., have been introduced by inserting them into various devices. 2. Description of the Related Art Card-shaped small electronic devices have become popular, and are used in such a way that the main body of the device is made to perform required operations based on laws and regulations. In this type of card-like small electronic device, a flexible sheet having an electronic circuit section including a memory element, etc. is housed in a card-like case, and input/output terminals on the flexible sheet are connected through terminal windows drilled in the case. When this card-shaped small electronic device, ie, a portable storage card, is inserted into the main body of various devices as described above, the input/output terminals of the device main body are exposed to the outside through the terminal window of the card, The operation is performed by contacting the input/output terminal section of the terminal.

In such small card-like devices such as portable memory cards, a flexible sheet having an electronic circuit section is housed in a card-like case as described above, and the input/output terminal section of the circuit section on this sheet is connected to the case. It is designed to face the outside through a terminal window drilled in the interior. However, with this configuration, the flexible sheet is separated from the inner surface of the case where the terminal window is located, making it difficult for the input/output terminals to be exposed to the outside through the terminal window of the case, making it difficult to attach the card-shaped device to the device body. When this happens, there arises a problem that the input/output terminals of this card-like device and the input/output terminals of the device body do not come into good contact.

Purpose of the Invention The present invention provides a card-like small electronic device as described above, in which the input/output terminals of the electronic circuit section inside the case are reliably exposed to the outside through the terminal window of the card-like case. equipment.

Summary of the Invention In the present invention, a flexible sheet having an electronic circuit section is placed inside a card-like case having a terminal window, a terminal lifter is placed on the back of the flexible sheet, and the terminal lifter is used to insert the flexible sheet. The part having the output terminal portion is pushed up toward the terminal window bored in the card-like case to ensure that the input/output terminal portion faces the terminal window.

Embodiment An example of a card-shaped small electronic device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an enlarged perspective view of an example of a card-shaped small electronic device according to the present invention, and FIGS. 2 and 3 are enlarged cross-sections along the thickness direction of the card-shaped electronic device taken along lines - and - in FIG. 1. The sectional view and FIG. 4 show an exploded enlarged perspective view thereof. In the figure, 1 generally indicates a card-shaped small electronic device, such as a portable storage card, according to the present invention. Reference numeral 2 denotes a card-shaped metal case, and this case 2 includes first and second panels 3 and 4 made of rectangular stainless steel plates, respectively, and two panels 3 and 4, which are also made of stainless steel and are interposed between both panels 3 and 4. It consists of a metal frame 5 in the shape of a rectangular frame along the periphery of the panels 3 and 4, and is surrounded by the first and second panels 3 and 4 and the metal frame by joining the three parts. A flat space 6 is formed. A flexible sheet 7 having an electronic circuit section 8 is housed in the space 6. The flexible sheet 7 is made of, for example, a polyimide film, and a wiring pattern 9 is formed on both sides of the flexible sheet 7, for example, on the first panel 3.
A component 10 such as a semiconductor integrated circuit having a semiconductor memory element is mounted on the side facing the
Each terminal lead 10a of this component 10 is electrically connected to a predetermined portion of the wiring pattern 9, respectively. 11
1 is an input/output terminal section in which input/output terminals 11a led out from the circuit section 8 are arranged, for example, in a line at a required interval, and this terminal section 11 is provided on the surface of the sheet 7 on the panel 3 side. Each terminal 11 of the terminal section 11
A and the wiring pattern 9 can be formed at the same time, for example, by selectively etching, for example, a copper foil adhered onto the flexible sheet 7 into a predetermined pattern using lithography technology.

On the other hand, the first panel 3 facing the input/output terminal section 11 is provided with a terminal window 12 having a shape and size corresponding to the entire area of the input/output terminal section 11.

A sealing adhesive 18 such as a pressure-sensitive adhesive is applied in a frame shape around the terminal window 12 on the inner surface of the panel 3, for example.

Particularly in the present invention, on the side of the flexible sheet 7 opposite to the side on which the input/output terminal section 11 is attached, the flexible sheet 7 extends with a width and a length facing almost the entire area of the input/output terminal section 11. A prismatic terminal lifter 13 made of metal such as Al is provided,
As a result, the flexible sheet 7 is lifted at its input/output terminal portion 1 so that each terminal 11a faces the terminal window 12 of the panel 3 with certainty. The length a of this terminal lifter 13 is the length a of the terminal window 12.
The length is selected to be smaller than the length A and to be able to sufficiently lift all the terminals 11a. On the other hand, the width b of the terminal lifter 13 is smaller than the width B of the terminal window 112, and the flexible sheet 7 is bent by the ridge lines on both sides of the lifter 13 in the direction of the width b. It is desirable to select B>b+2t, taking into consideration the thickness t.

Further, on each outer surface of both panels 3 and 4, a cosmetic outer covering sheet 15 made of polyethylene terephthalate film or the like is printed with various characters and symbols.
and 16 are each bonded by, for example, a heat-sensitive adhesive applied to the inner surface thereof. In the outer cover sheet 15 that is joined to the panel 3 having the terminal windows 12, small windows 19 corresponding to each terminal 11a of the terminal section 11 on the flexible sheet 7 are arranged.
Each terminal 11a faces the outside independently.

When manufacturing a card-shaped small electronic device with such a configuration, for example, the terminal lifter 13 is temporarily fixed in advance at a predetermined position corresponding to the terminal portion 11 on the back surface of the flexible sheet 7 with an adhesive material or the like. On the other hand, with the panel 3 adhered to the metal frame 5, the flexible sheet 7 is inserted into the metal frame, and epoxy resin powder etc. are loaded, and in this state, the other panel 4 is aligned with the metal frame 5. At the same time or in a separate step, the first and second outer covering sheets 15 and 16 are brought into contact with the panel 3 and subjected to a thermocompression bonding process to melt and fill the loaded epoxy and to cure it. In this manner, the panel 3, metal frame 5, and panel 4 are aligned, and with the flexible sheet 7 placed in the space 6 formed by these, the whole is integrated by filling with resin.

In this case, especially in the present invention, the terminal lifter 13 is arranged on the back side of the flexible sheet 7, and the portion of the sheet 7 having the input/output terminal section 11 is bent and pushed up toward the terminal window 12 of the case 2. All the terminals 11a of the input/output terminal section 11 surely face the terminal window 12 and the corresponding small windows 19 of the outer covering sheet 15.

In this case, the terminal window 1 is provided on the inner surface of the panel 3.
When the adhesive material 18 for bonding and sealing, such as a pressure-sensitive adhesive, is placed in a frame shape surrounding the outer periphery of the panel 2, as described above, the panel 3 and the flexible sheet 7 are bonded to the terminal portion 11. The filled resin 17
It is possible to prevent the terminals 11 from being exposed to the inside of the terminal window 12 and contaminating or covering the terminals 11.

Effects of the Invention As described above, in the present invention, the flexible sheet 7 having an electronic circuit section is arranged in a card-like case so that its input/output terminal section 11 faces the outside through the terminal window 12. Since a terminal lifter 13 is placed on the back of the input/output terminal section 11 of the flexible sheet 7, the input/output terminal 11 can be securely moved to the window 12 of the case 2.
Since the small window 19 of the outer covering sheet can be viewed from the outside, it is possible to reliably avoid inconveniences such as incomplete contact between these input/output terminals and the input/output terminals of the main body of the device.

[Brief explanation of drawings]

FIG. 1 is an enlarged perspective view of an example of a card-shaped small electronic device according to the present invention, FIGS. 2 and 3 are sectional views thereof, and FIG. 4 is an exploded perspective view thereof. 1 is a card-shaped small electronic device according to the present invention; 2 is a card-shaped case; 3 and 4 are first and second panels thereof; 5 is a metal frame; 7 is a flexible sheet;
Reference numeral 8 designates an electronic circuit portion thereof, 12 a terminal window formed in the panel 3, 13 a terminal lifter, and 15 and 16 first and second outer covering sheets.

Claims (1)

[Claims] 1. A flexible sheet having an electronic circuit section is arranged in a card-like case having a terminal window, and a terminal lifter is arranged on the back of the flexible sheet, and the input/output terminal section of the flexible sheet is controlled by the terminal lifter. A card-shaped small electronic device, the input/output terminal portion facing the terminal window by pushing up the input/output terminal portion toward the terminal window bored in the case.