JPS60129895A - Card type miniature electronic device - Google Patents

Abstract

PURPOSE:To miniaturize a card type electronic device by setting a flexible sheet contanining an electronic circuit part into a card-shaped case with the input/output terminal part of the sheet set opposite to outside through a terminal window and then sealing the sheet into the case surely with an adhesive provided at the fringe part of the terminal window. CONSTITUTION:A card-shaped case 2 of a card type miniature electronic device 1 is constituted with the 1st and 2nd panels 3 and 4 and a metallic frame 5 set along the periphery of both panels. A flat space 6 is formed with these panels 3 and 4 and the frame 5 to store a flexible sheet 7 contanining an electronic circuit part 8. A sealing adhesive 18 is applied around a terminal window 12 drilled through the panel 3. At the same time, a prismatic terminal lifter 13 is set to the sheet 7 opposite to the entire area of an input/output terminal part 11 and at the side opposite to an area where the terminal 11 is coated. Thus the sheet 7 can be sealed surely into the case 2, and the 1st and 2nd cover sheets 15 and 16 are provided to the panels 3 and 4 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a small card-shaped 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 Art and Problems Recently, data and calculation methods stored on the card can be stored by inserting it into various devices, such as the portable recording card V that stores various data and calculation methods. Card-shaped small electronic devices that can be used in different ways have become popular, allowing the main body of the device to perform required operations based on the following information. In this type of card-like small electronic device, a flexible sheet having an electronic circuit section including a memory element, etc. is housed and distributed in a card-like case, and input/output terminals on this flexible sheet are connected through terminal windows drilled in the case. When this card-shaped small lightning device, ie, a portable memory card, is inserted into the main body of various devices as described above, the input/output terminals of the device main body are connected to the outside through the terminal window of the car F. Its operation is performed by contacting the input/output terminal section inside the case.

In a small card-like device such as a portable storage card, a flexible sheet having an electronic circuit section is housed in a card-like case as described above, and its input/output terminal section is inserted through a terminal window provided in the case. The flexible sheet is placed outside as desired, but in this case, the case is often filled with resin for the purpose of stably holding and protecting the flexible sheet.

However, when filling with resin in this way, this resin leaks into the terminal window mentioned above, causing problems such as inhibiting electrical contact between the input/output terminals on the flexible sheet and the input/output terminals on the main body of the device. Come.

OBJECTS OF THE INVENTION The present invention provides for, in a card-like small electronic device as described above, ensuring that the human output W of the electronic circuit section inside the card-like case is exposed to the outside through the terminal window of the card-like case, and The present invention provides a card-shaped small electronic device that can reliably prevent, for example, leakage of resin from a terminal window.

Summary of the Invention The present invention arranges a flexible sheet having an electronic circuit section inside a card-like case, and allows the input/output on the flexible sheet to be exposed to the outside through a terminal window drilled in the card-like case. In particular, in the present invention, an adhesive is placed on the inner surface of the case to surround the outer periphery of the terminal window and to bond and seal the flexible sheet.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 view of an example of a card-shaped small electronic device according to the present invention, and FIGS. 2 and 3 are line I-1 and
FIG. 4 is an enlarged cross-sectional view taken along the thickness direction of the card-shaped electronic device taken along line -■, and FIG. 4 is an exploded enlarged perspective view thereof. In the figure, (1) generally shows a card-shaped small electronic device, such as a portable storage card, according to the present invention. (2)
is a card-shaped metal case, and this case (2) has first and second panels (3) and (4) each made of, for example, a rectangular stainless steel plate, and both panels ( The metal frame (5) is interposed between 3) and (4) and forms a polygonal frame along the periphery of both four channels (3) and (4). A flat space (6) surrounded by the first and second panels (3) and (4), the metal frame (5), and K is formed. A flexible sheet (7) having a busy electronic circuit section (8) is accommodated in the space (6). The flexible sheet (7) is made of, for example, a polyimide film, and has, for example, wires and wires (9) deposited on both sides thereof, and has a semiconductor memory element on the side facing the second panel (3), for example. A component (if) such as a semiconductor integrated circuit is mounted, and each terminal lead (IOa) of this component 0O is mounted.
are electrically connected to predetermined portions of the wiring and turns (9), respectively. α◇ is an input/output terminal section in which input/output terminals (Ila) derived from the circuit section (8) are arranged at required intervals, for example, in - rows, and this terminal section αη is the input/output terminal section of the sheet (7).
Provided on the panel (3) side surface. Each terminal (lla) of the terminal portion αη and the wiring pattern (9) can be formed simultaneously by selectively etching, for example, a copper foil bonded onto a flexible sheet (7) in predetermined grooves and turns using a phosphorography technique. can be formed.

On the other hand, the first panel (3) facing this input/output terminal section (11) is provided with terminal windows α group having a shape and size corresponding to the entire area of this input/output terminal section (<11). .

Particularly in the present invention, a sealing adhesive α barrel such as a pressure-sensitive adhesive is applied in a frame shape around the terminal window ◇ on the inner surface of the panel (3).

Also, the input/output terminal section Q of \flexible sea) (7)
) is attached to the input/output terminal section 0υ on the opposite side
A prismatic terminal lifter α made of metal such as stainless steel and extending across almost the entire area with opposing widths and lengths.
■ is provided, thereby making the flexible sheet (7)
Lift it up at the input/output terminal section α■ and
Make sure that each panel a) faces the terminal window (2) of the panel (3). The long Ia of this terminal lifter α■ is the terminal window (1
→The length is selected to be smaller than the length A and to be able to sufficiently lift all the terminals (lla). On the other hand, terminal lifter α1
The width of the flexible sheet is smaller than the width B of the terminal window (B), and since the flexible sheet (F) is bent by the ridge lines on both sides of the lifter α3 in the direction of the width B) considering the thickness t of
b + 2 t C It is desirable to select C. In addition, the outer surfaces of both panels (3) and (4) are coated with a decorative outer covering sheet αG made of polyethylene terephthalate film, etc., on which various characters, symbols, etc. are printed. and (1(
The ils are each adhered, for example by means of a heat-sensitive adhesive applied to its inner surface. And a panel with all terminal windows α (3
), small windows α corresponding to the respective electrons (l1m) on the flexible sheet (7) are arranged, and each terminal (11-a) are made to face the outside world independently.

When manufacturing a card-like small electronic device with such a configuration, for example, a terminal lifter is temporarily fixed in advance with an adhesive material or the like at a predetermined position facing the rear face of the flexible sheet (7). On the other hand, with the panel (3) glued onto the metal frame (5), insert a flexible sheet into the metal frame and load epoxy resin powder, etc., and in this state, attach the other panel (4) to the metal frame. At the same time or in a separate process, the first and second outer covering sheets αG and θQ are applied to the frame (5), and then the first and second outer covering sheets αG and θQ are applied to the panel (3) and subjected to thermocompression bonding. The 4 panels (3), the metal frame (5), and the panel (4) are fitted together and the flexible sheet is placed in the space (6) formed by them. With (7) arranged, the whole is integrated by filling with resin.

In this case, in particular, in the present invention, an adhesive such as a pressure-sensitive adhesive or the like is used in a frame shape to surround the outer periphery of the terminal window α on the inner surface of the No9 panel (3), and to form a bonding seal as described above. Since 0Q is placed, the 74 flannel (3) and the flexible sheet (7) surround the terminal part 0■ and are hermetically sealed.
It is possible to avoid the possibility that the terminal α]) may be covered with contaminated material.

Effects of the Invention As mentioned above, in the present invention, a flexible card having an electronic circuit section inside a card-like case (7) k
The input/output terminal section <11) is arranged so as to face the outside through the terminal window α■, and by placing adhesive on the periphery of the window (6), the inside of the case is reliably sealed. This makes it possible to prevent the resin material from leaking into the window in a molten state even when filling the case with resin, thereby ensuring that inconveniences such as poor contact at the terminals are avoided. This can be avoided.

BRIEF DESCRIPTION OF THE 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-like small electronic device according to the present invention, (2) is a card-like case, and (3) and (4) are the first and second parts thereof.
(5) is the metal frame, (7) is the flexible sheet, (8) is the electronic circuit part, ← is the terminal window drilled in the panel (3), and 0 o'clock is the area around it. Adhesives, 00 and (1 (i are the first and second outer covering sheets). Figure 3

Claims (1)

[Claims] A flexible sheet having an electronic circuit section is arranged inside a card-like case, and the input/output terminal section on the flexible sheet faces the outside through a terminal window bored in the case, and extends around the outer periphery of the terminal window. A card-shaped small electronic device comprising an adhesive for bonding and sealing between the inner surface of the case and the flexible sheet.