JPH01128881A - Manufacture of portable medium - Google Patents

Abstract

PURPOSE: To upgrade the quality of a finished product following the improvement of workability and also increase dependability through bettering durability against an externally inflicted force by first previously fitting an indicator integrally with the opening of a spacer and fitting the indicator into a card substrate. CONSTITUTION: A liquid crystal indicator LCD 5 is previously fitted integrally into the opening part 7 of a spacer 1 by bonding the indicator LCD 5 with an adhesive 11. In this case, the peripheral part of the opening part 7 in the spacer 1 is superposed on a fitting part 5a formed on the surrounding of the display part of the LCD 5 and the display part is correctly positioned at the opening part 7. On the other hand, other required electronic parts such as an LSI chip excepting the LCD 5 are mounted on a wiring board 4 on which specified printed wiring or the like are formed. Next, the wiring board 4 is bonded and fixed on the back face of the spacer 1 with the help of the adhesive 11 by positioning a contact 6 to a contact opening part 8. After that, a guard frame 3 for a front panel 2 and the peripheral part of the spacer 1 are joined together by welding by wrapping the wiring board 4 and the back face of the wiring board 4 and the front panel 2 are bonded and fixed with the adhesive 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method of manufacturing a portable medium such as a multifunctional IC card.

(Prior Art) To explain a portable medium using a multi-function IC card as an example, a multi-function IC card has a pocket-sized card base consisting of a front panel and a back panel made of stainless steel, and a CPU and memory. Required components such as an LSI chip, a liquid crystal display (hereinafter referred to as LCD), and a thin battery are mounted on a wiring board and installed inside the front panel. is displayed on the outside, a keyboard is provided on the first tier, and contacts for transmitting and receiving required data with external devices such as readers/writers are provided on the tier 1.

According to the I5O (International Organization for Standardization) standard, the thickness of a multifunctional IC card is defined as 0.76 mm, and the vertical and horizontal dimensions are also defined as predetermined dimensions.

Multi-function IC cards not only have the function of recording required information, but also operate the internal CPU by manual operation of the keyboard to display characters on the LCD, without using a reader/writer, etc., to record the recorded contents. This allows for confirmation etc.

FIG. 4 shows a multifunctional I as a portable medium as described above.
A conventional manufacturing method of a C card is shown.

In the figure, reference numeral 1.2 denotes a front panel and a back panel made of stainless steel as constituent members of the card base, and the front panel 1 has an LCD opening 13 and a contact opening 8, respectively. Also, back panel 2
A frame portion 3 having a required thickness is formed around the periphery. 1
4 is a wiring board for mounting, 5 is an LCD, and 6 is a contact.

First, in the first step, the wiring board 14 on which the contacts 6 and the like are formed and the required printed wiring is applied,
The LCD 5, an Sr chip (not shown), and other required electronic components are mounted.

Next, in a second step, the wiring l1i on which the electronic components are mounted is
The IW board 14 is adhered to the back surface of the front panel 1 with an adhesive such that the LCD 5 and contacts 6 are aligned with the LCD opening 13 and the contact opening 8, respectively.

After that, in a third step, the frame 3 of the back panel 2 and the peripheral edge of the front panel 1 are joined by welding so as to wrap around the wiring board 14, and at the same time, the wiring board 14 is welded.
4 and the back panel 2 of the LCD 5 are adhesively fixed to the back panel 2 with an adhesive 11, thereby completing a multifunctional IC card in which the required electronic components are housed in the card base.

FIG. 5 shows the structure of the interior portion of the LCD 5 in the multifunctional IC card manufactured through the above-mentioned steps.

As described in the second step, the LCD 5 is first mounted on the wiring board 14, and then when the wiring board 14 is bonded to the back surface of the front panel 1, the LCD opening 13 is
Therefore, in order to facilitate alignment, the size and shape of the LCD opening 13 is formed to be larger than the surface of the CD 5 by the required dimension, and with a margin, and the surface of the LCD 5 is It extends to a position almost close to the surface of the front panel 1. On the other hand, the back of LCD5 is
The entire back surface of the back panel 2 is fixed to the back surface etc. with an adhesive 11.

(Problems to be Solved by the Invention) In the conventional method of manufacturing a portable medium, after the LCD 5 is mounted on the wiring board 14, the wiring board 14 is adhesively fixed to the back surface of the front panel 1. Therefore, there were problems in that it was difficult to accurately align the LCD 5 with the LCD opening 13, resulting in poor workability, and positional deviations were likely to occur, resulting in quality deterioration.

Also, portable media manufactured by conventional methods include LCD
5 was extended to a position close to the surface of the front panel 1, and the entire back side of the LCD 5 was fixed to other members inside the card base.
When inserted into a reader/writer or the like, external force is likely to be directly applied to the LCD 5 due to the pressure of the conveyance roller, and this external force may cause shear stress hF4 and cause damage to the LCD 5, which is a problem.

This invention was made based on the above-mentioned circumstances, and it is possible to easily and accurately align the display to the opening of the front panel, thereby improving workability and product quality. The reliability of portable media can be improved by increasing the durability of portable media against external forces. The purpose is to provide a J-building method.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention incorporates necessary electronic components including a display in a card base having a front panel as a component, A method for manufacturing a portable medium, in which a display portion of the display unit faces an opening of the front panel, the display unit being integrated in advance with the opening of the front panel, and then attached to the card base. The main purpose is to interior design.

(Function) Since the display device is integrated in advance into the opening of the front panel before being installed in the card base, it is easy to accurately align the display device with the opening of the front panel. Ru. In addition, as a result of being able to easily perform accurate positioning,
By making the shape and dimensions of the opening smaller than the surface of the display device, the surface position of the display device can always be accurately defined at a position below the thickness of the front panel, and the pressure of the conveyance roller in the reader/writer can be reduced. External forces can be prevented from being applied directly to the display, thereby preventing damage to the display and improving durability against external forces.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. This embodiment is applied to a method of manufacturing a multifunctional IC card as a portable medium.

In addition, in FIGS. 1 to 3, the same or equivalent members and parts in FIGS. 4 and 5 are designated by the same reference numerals, and redundant explanation will be omitted.

First, we will explain the members applied to this example.
Compared to the area of the LCD opening 7 opened in the front panel 1 shown in FIG. There is.

When the LCD 5 is integrated into the opening 7 of the front panel 1, the peripheral edge of the opening is overlapped on the mounting part 5a, and the surface of the LCD 5 is It is made to be one step lower than the surface of the front panel by the thickness of the front panel. Reference numeral 9 denotes a keyboard, the switch portion of which is formed on the wiring board 4 in advance.

Next, a method for manufacturing a multifunctional IC card will be explained.

First, in the first step, L is inserted into the opening 7 of the front panel 1.
The CD 5 is integrally attached in advance by adhesion with an adhesive 11. At this time, as shown in FIGS. 2 and 3, the peripheral edge of the opening 7 in the front panel 1 is overlapped on the mounting portion 5a formed around the display section of the LCD 5, and The display section is accurately aligned with the opening 7.

Since the LCD 5 is attached alone to the front panel 1, accurate positioning can be easily performed.

Note that the LCD 5 may be attached as one part to the frontage 7 of the front panel 1 after assembly is completed, or it may be formed integrally with the frontage 7 of the front panel 1 during the assembly stage. You can. Even if the LCD 5 is integrated using the above-mentioned method, the opening 7 of the front panel 1
accurately aligned.

On the other hand, in a second step that is carried out in parallel with the first step, the wiring board 4, which has been provided with the necessary printed wiring, etc., is provided with an LS (not shown) excluding the LCD 5.

Mount the required electronic components such as an I-chip.

Next, in a third step, adhesive 1 is applied to the back surface of the front panel 1 by aligning the contacts 6 with the contact openings 8 of the wiring board 4 prepared as described above.
Glue and fix with step 1.

After that, in a fourth step, the frame 3 of the back panel 2 and the peripheral edge of the front panel 1 are joined by welding so as to wrap around the wiring board 4, and at the same time, the back surface of the wiring board 4 and the back panel 2 are adhesively fixed with adhesive 11. At this time, no adhesive is poured into the back surface of the LCD 5, and the back surface of the LCD 5 is not fixed to the back panel 2 or the like. In this way, a multifunctional IC card is completed in which the card base 10 is equipped with necessary electronic components.

Since the multifunctional IC card as a portable medium is manufactured as described above, the LCD 5 can be easily and precisely aligned with the opening 7 of the front panel 1, improving workability and product quality. Improved.

In addition, even if the pressure of the conveyance rollers is applied to the card base 10 when inserted into a reader/writer, etc., external forces such as that pressure are prevented from being applied directly to the LCD 5, and furthermore, the bending stress due to the pressure is avoided. Tensile stress F due to F1
2 and the compressive stress F3 do not generate any shearing stress in the LCD 5, thus preventing damage to the LCD 5 and increasing its durability against external forces.

[Effects of the Invention] As explained above, according to the present invention, the display device is integrated into the opening of the front panel in advance and is then incorporated into the card base. It has the advantage that it can be easily and accurately aligned with the parts, improving workability and product quality. In addition, the display is a liquid crystal display, and the peripheral edge of the opening in the front panel is fitted with the mounting part formed around the display part of the liquid crystal display, so that the display part of the liquid crystal display is attached from the surface of the front panel. According to an embodiment in which the thickness of the front panel is lowered by the thickness of the front panel, and the back surface of the liquid crystal display is not fixed to other members in the card base, in addition to the common advantages mentioned above, the reader - When inserted into a lighter, etc., external forces such as the pressure of the conveyance rollers are not directly applied to the liquid crystal display, and almost no Ir stress is generated within the liquid crystal display due to that pressure. However, there is an advantage that damage to the liquid crystal display device can be accurately prevented and durability against external forces can be increased.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining an embodiment of the method for manufacturing a portable medium according to the present invention, and FIG. 1 is an exploded perspective view of the portable medium for explaining the manufacturing process, and FIG. 2
The figure is a front view of the portable medium manufactured in the same process as above.
The figure is a vertical cross-sectional view of the liquid crystal display portion of the same portable medium, and Figure 4 explains the conventional manufacturing method of the portable medium.
FIG. 5 is a vertical sectional view of a liquid crystal display portion of the portable medium manufactured by the conventional method. 1: Front panel, 2: Back panel, 4: Wiring board, 5: Liquid crystal display, 7: Im mouth,
10: Cards too! Body, 11: Adhesive.

Claims (4)

[Claims] (1) A method for manufacturing a portable medium, in which necessary electronic components including a display are installed in a card base having a front panel as a component, and the display part of the display is faced to the opening of the front panel. The method for manufacturing a portable medium, wherein the display device is integrated into the opening of the front panel in advance and then installed inside the card base. (2) The method for manufacturing a portable medium according to claim 1, wherein the back surface of the display is not fixed to other members within the card base. (3) The portable medium according to claim 1, wherein a peripheral edge of the opening in the front panel is overlapped with a mounting portion formed around a display portion of the display device. Production method. (4) The method for manufacturing a portable medium according to claim 2 or 3, wherein the display is a liquid crystal display.