JP2001272480A - Wrist watch with communication function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrist watch with communication function wherein appear ance is improved by thinning a watch, a sufficient communication distance is ensured and restriction of design or the like does not exist. SOLUTION: This wrist watch with communication function has an antenna part for transmission and reception using at least electromagnetic waves and electronic components including IC chips, and transmits and receives information to and from an external apparatus. In the watch, a coil type antenna pattern turning to the antenna part and decoration members are formed simultaneously on a disk type substrate. The electronic components are mounted on the disk type substrate and assembled inside the watch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wristwatch with a communication function for transmitting, receiving or transmitting and receiving information by electromagnetic waves.

[0002]

2. Description of the Related Art When a card such as a ticket or a commuter pass is inserted into an automatic ticket gate such as a subway, data recorded on the card is read. The automatic ticket gate main body performs an arithmetic process based on the read data, and an entrance / exit process is performed based on the arithmetic process. Recently, a system for performing entrance / exit processing using a non-contact IC card (pass card) having a communication function has been proposed and put into practical use.

In the case of a non-contact IC card (pass card),
Although it is troublesome that the user has to take it out of his pocket etc. every time it is used, the communication function is incorporated in a wristwatch, and data is transmitted and received just by bringing the wristwatch close to the automatic ticket gate. The type that passes through is also being put to practical use.

FIG. 1 is a schematic sectional view of a conventional timepiece with a communication function. FIG. 2 shows a non-contact I of a conventional watch with a communication function.
It is a top view of C module. A non-contact IC module 1 used at the time of communication has a coiled antenna pattern 3 formed on a substrate 2 and electronic components such as an IC chip 4 and a capacitor 5 mounted thereon. The coil antenna pattern 3 is formed on both surfaces of the substrate 2. The IC chip 4 receives, for example, data such as subway fee information and the number of times of use, and the coil-shaped antenna pattern 3 transmits and receives the data in a non-contact manner. The substrate 2 has a disk shape, and has a central portion formed in a hollow state. The coil-shaped antenna pattern 3 is formed on the periphery of the substrate 2, and an IC chip 4 and a capacitor 5 are mounted on the substrate 2 and connected to the coil-shaped antenna pattern 3. The non-contact IC module 1 is adhesively fixed to the bottom of the back cover 6 of the watch case. Watch movement 7
Are arranged and fixed in the central portion of the non-contact IC module 1 where the contact is removed. An auxiliary ring 8 supports the dial 9 and the clock movement 7. Reference numeral 10 denotes an exterior of a watch case. A windshield 11 is put on the exterior 10 to constitute a wristwatch with a communication function. Reference numeral 12 denotes a pointer indicating time.

[0005] A space A is provided between the timepiece movement 7 and the non-contact IC module 1 to ensure a good communication state.

[0006]

In the wristwatch with the communication function having the above-described structure, it is necessary to provide the space A between the timepiece movement 7 and the non-contact IC module 1 in consideration of the communication state. Was increasing. In addition, since the antenna pattern 3 of the non-contact IC module 1 serving as a communication unit is directly bonded to the back cover 6,
There is a problem that the communication state is deteriorated and the communication distance is shortened. Further, since the antenna pattern 3 has a structure in which the back cover 6 is directly in contact with the back cover 6, a material such as a metal cannot be used, and there is a restriction in the design of the watch. In the conventional example, a plastic material is used for the watch case.

[0007] In view of the above problems, the present invention reduces the thickness of the timepiece, improves the appearance, and secures a sufficient communication distance.
It is an object of the present invention to provide a wristwatch with a communication function without design restrictions.

[0008]

DISCLOSURE OF THE INVENTION In a wristwatch having a communication function for transmitting and receiving information to and from an external device, the wristwatch has at least an antenna unit for transmitting and receiving by electromagnetic waves and electronic parts including an IC chip. A wristwatch with a communication function is formed by simultaneously forming a coil-shaped antenna pattern serving as an antenna portion and a decorative member on the substrate, mounting electronic components on the disk-shaped substrate, and incorporating the electronic components inside the timepiece.

The disk-shaped substrate is a wristwatch with a communication function having a dial function and a communication function.

[0010] The coil-shaped pattern serving as the antenna portion and the decorative member are simultaneously formed by etching.

[0011]

FIG. 3 is a schematic sectional view of a wristwatch with a communication function according to an embodiment of the present invention. Reference numeral 13 denotes a substrate, and a coil-shaped antenna pattern (not shown) serving as an antenna portion is formed on the periphery of the front surface and the back surface of the substrate.
4. The non-contact IC module is configured by mounting the capacitor 15. Further, decorative members such as numerals, cutouts, logos and the like are also formed on the surface of the substrate 13 so as to have a function as a communication module and a function as a dial. 16 is a back pig, 17 is a clock movement. Since it is not a configuration in which a non-contact IC module is mounted on the back cover 16 as in the related art, there is no need to provide a gap, and a reduction in thickness can be achieved. Reference numeral 18 denotes a watch exterior case, 19 denotes a windshield, and 20 denotes a pointer.

FIG. 4 is a view showing a non-contact IC module portion (a dial) of a wristwatch with a communication function according to the present invention.
Is a front view, and (b) is a back view. The substrate 13 is formed in a disk shape, and a coil-shaped antenna pattern 21 serving as an antenna portion is formed on the periphery of the front and back surfaces. The coil-shaped antenna patterns 21 on the front surface and the back surface are connected via through holes 13 a provided in the substrate 13.
On the surface of the substrate 13, a numeral 22, a cut 23 and the like are simultaneously formed. On the back surface, an IC chip 14 and a capacitor 15 are mounted to constitute a non-contact IC module having a function of a dial.

A glass epoxy substrate is used for the substrate 13, a copper foil is formed on the entire surface by plating or the like, and a coil-shaped antenna pattern 21, a numeral 22, a cut portion 23 and the like are simultaneously formed by etching. A pattern for mounting electronic components such as the IC chip 14 and the capacitor 15 is also formed at the same time. The pattern for mounting electronic components is plated with Ni or Au. At the time of mass production, a plurality of antenna patterns, numerals, and cut portions are formed on a single substrate, and the outer shape of the disk-shaped substrate is formed by pressing.

FIG. 5 is a plan view of a wristwatch with a communication function according to the present invention. The disk-shaped substrate 13 configured as described above is incorporated in a watch case in the same manner as a normal watch assembly, and a wristwatch having both a communication function and a function as a dial is completed.

[0015]

Since the communication function and the dial function are provided on the same substrate, the number of parts can be reduced and the cost can be reduced. Further, since the coil-shaped antenna pattern and the decorative member are formed at the same time, the number of steps can be reduced.

A substrate having a communication function and a dial function includes:
Since it is incorporated as a timepiece dial during assembly, there is no need for a step of bonding to the back cover, and the number of assembly steps can be reduced.

Since there is no substrate for the non-contact IC module alone, there is no need to provide a space, and the timepiece can be made thinner.

Since the antenna unit approaches the receiver, the communication distance increases.

Since the coil-shaped antenna pattern does not come into contact with the watch case member such as the back cover, metal can be used for the watch case member, and the degree of freedom in design is increased.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a timepiece with a communication function according to the related art.

FIG. 2 is a plan view of a conventional non-contact communication module of a timepiece with a communication function.

FIG. 3 is a schematic sectional view of a wristwatch with a communication function showing an embodiment of the present invention.

4A and 4B are diagrams showing a non-contact IC module portion (a dial) of a wristwatch with a communication function of the present invention, wherein FIG.
(B) Back view

FIG. 5 is a plan view of a wristwatch with a communication function according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Non-contact communication module 2 Substrate 3 Coiled antenna pattern 4 IC chip 5 Capacitor 6 Back cover 7 Watch movement 8 Auxiliary ring 9 Dial 10 Exterior 11 Windshield 12 Pointer 13 Board 13a Through hole 14 IC chip 15 Capacitor 16 Back cover 17 Clock Movement 18 Exterior 19 Windshield 20 Pointer 21 Coiled antenna pattern 22 Numeral 23 Cut

Claims (3)

[Claims] 1. A wristwatch having a communication function having at least an antenna unit for transmitting and receiving by an electromagnetic wave and an electronic component including an IC chip and transmitting and receiving information to and from an external device. A wristwatch with a communication function, wherein a coil-shaped antenna pattern as a part and a decorative member are simultaneously formed, and electronic components are mounted on the disk-shaped substrate and incorporated in the timepiece. 2. The wristwatch with a communication function according to claim 1, wherein said disk-shaped substrate has a dial function and a communication function. 3. The wristwatch with a communication function according to claim 1, wherein the coil-shaped antenna pattern serving as the antenna portion and the decorative member are formed simultaneously by etching.