JPS6082883A - digital electronic watch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an integrated structure of a movement, an exterior, and a band of a digital electronic wristwatch. A movement 1, which has a time display function and consists of a display panel, a circuit block, a switch spring, a battery, a frame for fixing them, etc., is fixed and housed in a storage section made by a body 2 made of resin or metal, and a back cover O. A band 4 is connected to the iron part of the body 2 by a spring bar or something similar.

As is clear from the above, the conventional carrying method is to attach the body to the arm with a band, and since the body 2 and back cover 3 are thick and heavy compared to the movement, and are rigid bodies, it does not feel portable. It was so bad that I had to take my poetry out of my arms especially when I was doing work or exercise that involved vigorous physical movement. Furthermore, the body 2 is expensive, and furthermore, it takes a considerable amount of time to connect the body 2 and the band 4, and these costs are extremely large compared to the cost of the movement.

The present invention provides a new digital electronic wristwatch to eliminate these drawbacks, and for this purpose, the parts corresponding to the body and back cover are removed and the movement is embedded in the band. The present invention will be explained below along with the drawings.

FIGS. 2 and 3 show an embodiment of the present invention.

5 is a urethane-based band base material having sufficient flexibility, and both ends thereof are provided with a function capable of satisfying the fixing function of a normal band. Reference numeral 7 denotes a liquid crystal display panel, which displays the time based on electrical signals sent from a circuit block 8 on which electrical elements such as a crystal 8a and a MOS chip are mounted. Further, 6 is a button type battery that supplies power to the circuit block 8. These liquid crystal display panel 7, circuit block 8, and battery 6 are connected to one flexible polyimide resin substrate 10 on which a copper foil pattern is wired. and the polyimide resin substrate 10:F, and the liquid crystal display panel 7 and the polyimide resin substrate 10 are pressed together while applying heat from the polyimide resin substrate side with a conductive anisotropic film 11 interposed between the respective contact points.

FIG. 4 shows the connection between the battery 6 and the polyimide resin substrate 10, and the polyimide resin 10a is connected in advance to the contact portions 12 of the polyimide resin substrate 10, which are to be connected to the positive and negative cans of the battery B, over a wide range. Remove the copper foil 10b, leaving only the copper foil 10b, and connect that part to the positive and negative cans of battery B by spot welding. Reference numeral 16 denotes an adhesive for adhering a part of the polyimide resin substrate 10 near the contact portions in order to prevent the force acting in the direction of peeling off the polyimide resin substrate from each contact portion. The band base material 5 includes a liquid crystal panel 7, a circuit block 8, a battery 6, and a polyimide resin substrate 10.
There are four parts distributed on a flat surface in which the parts can be fitted snugly. A transparent acrylic plate 9 is provided on the top surface of the liquid crystal panel 7, and is bonded to the liquid crystal panel 7 at the outer periphery of the upper panel 7'.This protects the liquid crystal panel 7, especially from external forces applied from two sides. The force applied to the acrylic plate 9 from the top surface escapes from the outer periphery of the acrylic plate to the band base material 5', and no external force is applied directly to the liquid crystal panel 7, thereby preventing negative effects such as breaking the panel glass. It will not affect you. Reference numeral 14 is a film-like cover, which is made of polyester or the like as a substrate and has an aesthetic appearance and texture by printing, chemical treatment, or laminating with other films.This film-like cover is the band base material of 5. ” is pasted on two sides with adhesive. The portion of the film cover 14 that covers the display area 7a of the liquid crystal panel 7 is transparent, and the time and other information displayed on the liquid crystal panel 7 can be read from the top surface.

As described above, the digital electronic wristwatch according to the present invention is extremely light compared to conventional wristwatches because there are no so-called exterior members on the body and back cover, and the liquid crystal panel, circuit blocks, and batteries are distributed in a flat manner, making it very light. Because it is thin and each part is connected with a flexible base material, the entire watch has a certain degree of flexibility and fits easily on the wrist, making it easy to carry.
The feeling has been significantly improved (7), and there is no feeling of bother or fatigue in the arms, and the purpose is fully achieved.

In this example, a glass substrate liquid crystal panel was used, but a flexible polymer film substrate liquid crystal panel was used, and the circuit board on which the electrical elements of the circuit block were mounted was also a film-like substrate with flexible ribs. Furthermore, by providing an appropriate number of grooves running in the horizontal direction on the back surface of the band base material, the flexibility of the watch as a whole is further improved. In addition, although a liquid crystal panel was used in this example, it can also be applied to digital electronic wristwatches using display elements such as EL and electrochromic.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a conventional wristwatch, and FIG. 2 is a partial plan view of a digital electronic wristwatch showing an embodiment of the present invention.
FIG. 6 is a sectional view of FIG. 2. FIG. 4 is an enlarged view of the connecting portion between the battery and the polyimide resin substrate in FIG. 3. 5. Resin band base material 6, battery 7, liquid crystal panel 8, circuit block 9, transparent acrylic plate 1
D...Polyimide resin substrate 14...Film-like cover or more

Claims (1)

[Claims] 1) A digital type characterized in that a display panel, a circuit block, and a battery, which are distributed on a flat surface on a hand base material, are sandwiched and fixed between the band base material and the cover? [L child watch. 2) The band base material is made of resin, and the band base material has four parts disposed in advance in planes from the upper surface near the center in the longitudinal direction, and the display panel, circuit block, and battery are housed in the recessed parts, The cover is in the form of a film with an aesthetic appearance and texture in which the area covering the display parting part is transparent, and the cover is attached to the upper surface of at least four parts of the band base material by fixing means such as pasting. Digital electronic wristwatch 0 according to claim 1, characterized in that:
6) The digital electronic wristwatch according to claim 1, characterized in that a resin transparent plate is provided on the top surface of the display panel. 4) The digital electronic wristwatch according to claim 1, characterized in that six elements, a display panel, a circuit block, and a battery, are electrically connected by one flexible film-like substrate.