JPS60205786A - Portable electronic device - Google Patents

Abstract

PURPOSE:To prevent an integrated circuit from being broken mechanically when the integrated circuit is made large-size and a device is made thin, by dividing the integrated circuit to plural chips and distributing and arranging them. CONSTITUTION:In an IC card 1, an interface circuit 4 for data input/output, a control circuit 5 for instruction sequence, an arithmetic circuit 6 for various arithmetics, a control circuit 7 for data memory control, a memory 8 for program, and data memories 9, 10 for data storage consisting of PROMs or E<2>PROMs are distributed to individual IC chips and are incorporated. Consequently, even if the IC card is bent as shown in the figure, the danger of mechanical break of IC chips is reduced sufficiently because the size of each IC chip is small.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a mobile device such as an IC card having a plurality of IC chips including a CPU, data memory, etc.
fi [: Regarding the core device 6.

[Technical background of the invention and its problems]

Recently, an IC card having an IC chip has been developed and put into practical use as a memory card for recording information. This IC card has a thinner profile (0.76 Ij according to the draft ISO standard).
ul), multi-functionality is required. For this reason, large integrated circuit chips are now being housed in thin cards. This results in mechanical deformation or warping of the card.
There is a high risk that the chip will be damaged due to bending or the like. Furthermore, the increased size of the chip causes an increase in heat generation or localized heat generation during chip operation, which has the disadvantage of increasing the risk of card deformation and deterioration due to heat.

[Purpose of the invention]

This invention was made in view of the above circumstances, and its purpose is to protect integrated circuits from mechanical damage caused by larger integrated circuits and thinner devices, and to protect integrated circuits from mechanical damage caused by heat generated by integrated circuits. transformation.

Can you turn off your phone to prevent deterioration? Providing electronic equipment (there are two).

[Summary of the invention]

This invention has a configuration in which an integrated circuit is divided into a plurality of chips and these chips are distributed.

[Examples of inventions]

An embodiment of the present invention will be described below with reference to the drawings.

In Figures 1 and 2, 1 is an IC card as a portable device, and this is a card base made of a material such as zolastinx, which undergoes mechanical deformation during normal use. It has bending strength to prevent damage. On the surface of the IC card 1, there is provided a connection section 3 consisting of terminals for inputting and outputting data and for applying electrical pressure. Each terminal of this connecting part 3 is connected to the connecting part of an IC card reader/writer (not shown), so that the terminals are connected like two. = is an interface circuit for data output 4. A control circuit for instruction sequence (C
PU)5. Arithmetic circuit that performs various calculations 6. Control circuit for data memory control 2. Memory for programs 8. In each of the data memory 99.J□ for data storage consisting of FROM and B"FROM, a single IC chip (integrated circuit) is distributed and built-in as shown in Figure 3. ing.

Each of the chinches Ill is connected by a thin flexible printed circuit board (not shown) or conductive ink (two-way printed wiring).

Further, the interface circuit 4 and the connecting section 3 are connected by the printed circuit board.

Next, the operation in such a configuration will be explained. For example, now, the IC card 17al - a card reading/writing machine (not shown) is set. Then, the connecting part of the card reading/writing machine and the connecting part of the IC card 1 come into electrical contact. Data from the reading/writing machine is supplied to the control circuit 5 via the connection section 3 and the interface circuit 4. Thereby, the control circuit 5 stores the supplied data in the data memory 9, 1°, The arithmetic circuit 6 performs calculations.Furthermore, the stored contents of the data memos 9y and xo, the calculation results of the arithmetic circuit 6, etc. are sent to the input/output interface circuit 4 and the connection section 3.
The card continuation receipt is outputted to one machine via the above.

As mentioned above, since the integrated circuit is divided into multiple IC chips and these divided IC chips are distributed, even if the IC card is warped, each IC chip is Due to the small size of the chip, the risk of mechanical damage to the IC chip can be significantly reduced.

Also, it is a matter of reducing the warm rise in each part where each IC chip is arranged to a range that does not have a thermal effect on the IC card 1.

In the above embodiments, an IC chip built into an IC card has been described, but this is not limited to 1, and it is also possible to mount a control circuit, etc. in an electronic device inside the base of a casing or cover made of plastic material, etc. The same method can be used in other cases as well.

〔Effect of the invention〕

As detailed above, this method can protect integrated circuits from mechanical damage that occurs as integrated circuits become larger and devices become thinner, and prevents thermal deformation and deterioration due to heat generation of integrated circuits. It is possible to provide a portable pudding device that can prevent this from happening.

[Brief explanation of drawings]

The drawings show one embodiment 7 of the present invention, and FIG. 1 shows an IC
FIG. 2 is a perspective view showing the appearance of the card, FIG. 2 is a view showing the structure of the IC chip, and FIG. 3 is a sectional view showing the distributed state of each IC chip. 1°°・Ic card, 3... Connecting section, 4... Interface circuit, 5... Control circuit (CPU), 6
...Arithmetic circuit, 7...Control circuit, 8...Memory,
9.10...Data memory. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] (11) A portable indicator device incorporating a circuit,
A portable electronic device characterized in that the integrated circuit is divided into a plurality of chips and arranged in a distributed manner.(2) A portable electronic device characterized in that the integrated circuit is composed of a CPU and a router memory. A portable electronic device according to claim 1.