JPS6047980A - Structure of electronic timepiece - Google Patents

Abstract

PURPOSE:To attain to enhance mass-productivity by attaining to simplify the structure of an electronic watch, and enabling automatic assembling, by constituting at least one base board of an electro-optical display cell from a resin base board, and adhering the resin base board and the upper opening part of a case part to seal both of them. CONSTITUTION:A film shaped solar cell 21 is arranged to the upper surface side of a rectangular large areal sheet shaped battery 20 in a laminated state and two electrodes of the solar cell 21 are connected to solar cell terminals 9a, 9b by wire bonding while a charging circuit 22 including a diode for preventing a reverse-current is connected between the solar cell terminal 9b and a battery terminal 8b. The sheet shaped battery 20 is a solid chargeable one wherein metal lithium is used in a negative electrode and titanium disulfide is used in a positive electrode while a solid thin film comprising lithium silicate and lithium phosphate is used as an electrolyte material while the solar cell 21 has a thin flexible structure wherein a thin film is formed on a thin film base and, by laminating both of them on a resin film 2, a power source apparatus having a large area and flexibility can be constituted on a band.

Description

[Detailed description of the invention] This invention relates to an electronic timepiece structure constructed by molding.

In recent years, with the advancement of plastic molding technology, in the watch industry, efforts are being made to rationalize the configuration and reduce costs of electronic wristwatches by utilizing the molding technology in the construction of watch cases, substrates, and other elements. .

In particular, digital electronic watches that use one liquid crystal display cell as a one-time display are constructed with a small number of parts, such as a crystal oscillator, a circuit block display cell, a circuit block display cell, and a circuit block display correction block. Since there is no fixed moving part and only the spiritual connection between the parts is required, the use of the molding technology simplifies the structure - diversifies the design - and streamlines assembly. becomes possible.

An object of the present invention is to provide an electronic timepiece whose structure is extremely simplified using the above-mentioned molding technique.

Another object of the present invention is to provide an electronic timepiece with a high design quality by integrally forming a watch case and a band using the above-mentioned molding technique. Takami's objective is to provide a child's watch.

Embodiments of the present invention σ) will be described in detail below with reference to the drawings.

FIG. 1 shows a connection board for a slave clock used in the present invention. The connection board 1 is constructed in the same way as a film carrier used in the mini-monod method in the well-known IC hidden technology. The polyimide resin film 2 has a pilot hole 6 for positioning and conveyance, and the pilot hole 6 is used as a reference πLC=IC. After pasting them together, an enoching process is performed to form display element lead group 6 - ICIJ-de group 7, battery electrodes 8a - 10 electrodes 8b - solar cell terminals 9a and 9b, crystal mounting terminal 10, and condenser! -i
'11-Although not shown in one drawing, lead patterns are formed to connect the electrode patterns such as the switch end halves 12a and 12b as necessary.

Figure 2 shows the connection board shown in Figure 1 with each element removed.
An IC chip 14 is attached to the IC lead group 7, a crystal resonator 15 is attached to the terminal 10, and an oscillation capacitor 1 is attached to the capacitor terminal 11.
The electrodes 8a to 8blC of a battery 6 are connected to a rectangular large-area notebook battery 2°.The switch terminals 12a and 12b are respectively connected to pressure-sensitive snow-making rubber 17 having a conductive film 17a formed on its upper surface. Furthermore, film-shaped solar cells 21 are arranged in a stacked manner on the upper surface side of the battery 20θ),
The two electrodes of the solar cell 21 are connected to the solar cell terminals 9a-9b by wire punching between the two electrodes, and the solar cell end-knee 91 and the 'Aike end-7
Charging circuit 2 including a current flow prevention σ) diode between -8b
2 is connected.

The sheet-type battery 20 is a rechargeable solid-state battery using metallic lithium for the negative electrode, titanium trichloride for the positive electrode, and a solid thin film of silicic acid/lithium phosphate θ) as a ferrolytic material. Salmon - only 40 microns thick,
Also, 1 solar cell z, thin 1 on a thin film base]
By using a thin and flexible structure σ) and laminating the two on a 4.1:1 resin film, a flexible power supply device can be placed on the band. lII
It is possible to create f.

With the above configuration, a timepiece device having the functional configuration of a digital electronic timepiece except for one display device on the connection board 1 is completed.

FIG. 3 is a cross-sectional view of essential parts of an electronic timepiece in which a time opening exterior made of an organic material is integrally formed with the timepiece device shown in FIG. 2, and a display device is further attached. It represents.

In FIG. 3, reference numeral 4 denotes a watch exterior integrally molded from an organic material such as urethane, and as shown in FIG. 26 and a band portion 25 that accommodates each element constituting the timepiece device.
Furthermore, around the upper opening window 260 of the case part 24, there is a step part 24a for adhering one electronic optical display cell.
is provided.

Reference numeral 60 denotes an electro-optical display cell, which is a liquid crystal cell using resin substrates as upper and lower substrates, and an upper substrate 61 constituting the liquid crystal cell 60 is formed with an eaves portion 31a for adhesion. As this liquid crystal cell 60, a Soysto-Matic type liquid crystal is used, and the resin substrate of the earthwork has a cell structure in which both have polarization characteristics and display electrodes are formed on the inner surface.Or a guest host type liquid crystal is used. It is possible to use a cell structure in which one of the resin substrates does not have polarization characteristics.

66 and 64 are conductive rubber connectors, which are connected to the liquid crystal cell 3.
0 and the display element lead group 6 on the connection substrate 1 are connected to each other.

Next, a method for installing the liquid crystal cell filter O in the watch case 4 will be explained. As shown in FIG. 3, place the display element half-board 6 above the lightning conductor 1 rubber connector 66-64 in the upper opening window 23, insert the liquid crystal cell 30 from above, and cover the eaves part 31a with the case. A sealed structure is achieved by seam welding the entire circumference to the stepped portion 24a of the portion 24.

The electronic watch with the above configuration has an IC 14 that operates using a sheet battery 20 charged by a solar cell 21 as a power source.
drives the liquid crystal cell 60 via the conductive rubber connectors 33-34 to display the time. Further, the pressure-sensitive rubber 17 is compressed by pressing the switch portion 25a of the band portion 25, and the pressure-sensitive rubber 17 is compressed by pressing the switch portion 25a of the band portion 25, and the pressure-sensitive rubber 17 is compressed by pressing the switch portion 25a of the band portion 25.
By making 2b conductive, the lease inser signal is transferred to IC14.
It provides functions such as one-time adjustment.

FIG. 4 is a perspective view showing the structure of a work glove according to the present invention, and the same numbers as in FIG. 3 indicate the same dimensions. In other words, the case part 24 and the band part 25 are integrally formed by molding the connecting board 1, which has each of the elements constituting the electronic watch, into an insert molded with resin, and the watch exterior 4 is made into a single thin belt as a whole. σ), and metal adjustment pieces 40 are attached to both ends of the band portion 25 by insert molding, and buckles 41 and 42 are attached to both ends of the adjustment pieces 40. ing.

Furthermore, the color tone of the watch exterior 4L molding resin must be selected in consideration of both the light incident on the solar cell 21 and the design of the watch as a whole.

FIG. 5 is a sectional view showing the specific structure of one liquid crystal cell 30, which is attached to the case part 24 of the watch case 4 by providing a corrugated part 31b on the eaves part 31a of the tenth board 61. It is designed to increase flexibility.

As described above, according to the present invention, each component of an electronic timepiece is arranged on eleven film substrates, and then a timepiece exterior including a case part with an upper opening window and a band part is formed by integrally molding one organic material. In addition, a flexible resin substrate type display cell is used as the electro-optical display cell, and an upper substrate constituting the display cell is adhered and sealed around the soil opening formed in the special training exterior. The entire time-opening exterior has an extremely flexible structure, making it possible to create an electronic wristwatch with a significantly better design and ease of wearing on the wrist than in the past. Since there is no need to consider the assemblability of the watch exterior and the movement, it is possible to specify the shape of the case part and the band part at the time of molding the so-called exterior, and also to reduce the coloring and O during the molding process.・The metal plating on the surface allows for diversification of designs.

Furthermore, since each component of the above-mentioned timepiece has a molded structure with a watch exterior, it can be made thinner and has many effects such as improved reliability in terms of moisture resistance and the like.

[Brief explanation of drawings]

FIG. 1 is a plan view of a connection board of an electronic timepiece according to the present invention;
FIG. 2 is a plan view showing the state in which each element is attached to the connection board shown in FIG. External perspective view of an electronic timepiece - Figure 5 is a top view showing a specific configuration of a resin substrate type liquid crystal cell in the present invention. 1... Connection board - 4... Time opening Exterior-14--,
IC chip, 20...Sheet type 'peeking pond', 21...
...Nolar cell, 30...Liquid crystal cell.

Claims (1)

[Claims] A reference vibrator, an electronic circuit means, an electronic device comprising an electro-optical display cell, a case portion having an upper opening window for housing and fixing the electro-optical display cell, and a band portion integrally molded from an organic material. In the case of opening, at least one of the substrates of the electro-optical display cell is constituted by a resin substrate, and the resin substrate of the electro-optical display cell and the upper opening window of the case portion are sealed by bonding. The structure of an electronic watch is characterized by: