JPH10160861A - Dial plate for timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance quality and commercial performance by constituting part exposing to front surface of dial plate of an indication member consisting of a plurality of different kinds of members. SOLUTION: A dial plate for time piece 20 comprises an outer member 22 of circular ring and an inner member 24 of disk shape coupled in the circular central hole formed on it. The outer member 22 or the inner member 24 is formed on it with specified print, time figure print, paint, plating, etc., and used in combination with natural materials such as jewels, shell and ceramics, metal and synthetic element such as resin. In the case natural materials are used for the outer member 22, an annular fixing member such as metal, plastics, etc., provided on the periphery of the outer member 22 with a fixing part for fixing to the timepiece body is coupled. On its back surface a chin part projecting inside from the periphery of the central hole is formed and the outer member 22 is coupled in the recess formed with the central hole and the chin part. In this manner, coloring and multiple coloring of the dial plate for timepiece are made possible and thus, timepieces with high quality sense can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece display plate (character plate), and more particularly, to a timepiece display plate having a high quality and a high quality feeling, in particular, a variety of designs such as colorization and multicoloring. The present invention relates to a timepiece display plate and an EL (electroluminescence) timepiece display plate.

[0002]

2. Description of the Related Art Conventionally, a solar cell has been used as a power source for a clock, a calculator, a portable radio, and the like. This solar cell is usually formed of amorphous silicon or the like and converts light energy into electric energy. It is necessary to dispose it at a position where light shines due to its function, that is, at a surface position directly visible from the outside.

Conventionally, a solar cell has been used for a display panel structure of a wristwatch.
0 and the module 3 of the wristwatch as shown in FIG.
A solar cell 332 having a fan shape in plan view
And the solar cell 3
32, a translucent resin thin film layer 335 is laminated on a transparent polycarbonate (polycarbonate) resin or acrylic resin transparent plate 334.

However, in such a solar clock display panel structure, since the solar cell 332 is usually brown or dark blue, a solar cell or the like existing below can be seen through the transparent plate. Since the dial has the color of a solar cell, and the solar cell 332 has an insulating band 333 between the solar cells 332, the insulating band 333 appears as a crosshair, and the design including the color tone is greatly limited. In addition, the appearance was inferior, and the merchantability decreased.

On the other hand, there has been proposed a timepiece in which an interference filter or the like is provided on the front surface of the solar cell so that the solar cell is not directly visible. However, there is a problem in supplying light energy to the solar cell. And the appearance quality of the watch dial is poor.

In order to solve such a problem, for example, Japanese Patent Publication No. 5-38464 discloses a solar cell and a light in a wavelength range provided in front of the solar cell and contributing to power generation of the solar cell. A color diffusion layer including a color filter that transmits light and a scattering layer that is provided between the solar cell and the color filter, and that transmits a part of light transmitted by the color filter and scatters the remainder in four directions; A solar cell is disclosed.

[0007] As such a scattering layer, a white diffuser plate is used.
Acrylic milky white plate, half mirror with matte clear lacquer applied, glass whose one side is roughened by blasting, white diffuser with aluminum or other striped or net-like mirror on the other side of plastic It has been suggested to use

[0008]

However, in such a conventional technique, an acrylic milky white plate is used as the scattering layer. However, burrs are generated at the time of processing and deburring is required, so that the process is complicated. And the cost is high. In addition, when a matte clear lacquer is applied to a half mirror, a half mirror process or a coating process is required, and the process is complicated, and the thickness of the film is uneven due to the coating process, resulting in a variation in transmittance and color unevenness. There was a risk of doing. Further, such a blasting process, a mirroring process, and the like must be performed on a glass whose one surface is roughened by blasting or a mirror formed in a striped or net shape with aluminum or the like on the opposite side of the plastic. However, the process is complicated, and there is a problem that the thickness, the degree of unevenness, and the like become non-uniform due to these processes, the transmittance varies, and color unevenness occurs.

In any case, providing such a scattering layer between the color filter and the solar cell requires a complicated process, and the transmittance of the scattering layer varies, thereby deteriorating the power generation performance and causing color unevenness. However, the appearance quality is deteriorated due to the characteristics of the material itself, which is not preferable.

On the other hand, in the conventional solar clock display panel, it is difficult to visually recognize information such as the time on the display panel in a dark environment without illumination at night or the like. was there.

Conventionally, in a dark environment without illumination such as at night, in order to visually recognize information such as the time on the display panel, a fluorescent resin such as zinc sulfide is provided on a transparent resin plate provided with transparent electrodes on upper and lower surfaces. An EL-equipped timepiece has been developed in which EL (electroluminescence) cells in which a body is dispersed are disposed below a display panel. However, in this case, there is a similar problem that the lower EL cell can be seen through. there were.

Further, in the conventional timepiece display panel, since the display panel is made of the same type of material, the entire display panel can only be expressed in the same color, so that the design cannot be diversified. In particular, conventional solar clock display panels and EL clock display panels do not have a display panel composed of a combination of precious stones, shells, or metal. Had not been proposed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a solar cell and an insulating band crossed below a display panel, and an E-line.
L cells etc. are not seen through, and the display panel can be colored and multi-colored, and the design variation including the color tone is greatly expanded,
It is an object of the present invention to provide a watch display panel, which has a high quality by using high-grade members such as precious stones, has good appearance quality, and is excellent in merchantability, particularly a solar watch display panel and an EL-equipped watch display panel.

Another object of the present invention is to provide a timepiece display panel which can confirm the time in a dark environment such as at night by light emission due to the afterglow characteristic.

[0015]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned objects and objects of the prior art, and the timepiece display panel of the present invention is incorporated in a timepiece body. A disc-shaped timepiece display plate, wherein at least a portion of the display plate exposed on the surface side is formed of a display member made of at least two kinds of different kinds of members.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A timepiece display panel according to the present invention comprises:
The display member comprises an inner peripheral member and an outer peripheral member.

In the timepiece display panel of the present invention, the inner peripheral member,
Natural materials such as precious stones such as sapphire, blue pearl, onyx, and trame stones, shells such as white butterfly shells, glass, or ceramics such as Al ₂ O ₃
Titanium, stainless steel such as SUS304, metals such as copper alloys such as brass and nickel silver, and synthetic materials such as plastics such as polycarbonate and polyacetal resins can be used. These materials can be appropriately combined and selected from different materials. I just need.

Further, in the timepiece display panel of the present invention, the inner peripheral member is fitted in a central hole provided in the outer peripheral member. In this case, the display panel can be colored and multi-colored, and it is possible to prevent the solar cell and the like from being seen through by selecting the material, and the design variation including the color tone is greatly increased. Along with the enlargement, the use of high-grade materials such as precious stones gives a sense of quality, and it is possible to provide a timepiece display panel having good appearance quality and excellent marketability.

Further, in the timepiece display panel of the present invention, the inner peripheral member is fitted in a central concave portion provided in the outer peripheral member. In this case, the same effect can be obtained, and the outer peripheral member is located (overlaps) below the inner peripheral member, so that the solar cell is not seen through, the strength is improved, and the material is improved. Depending on the combination, the color tone of the outer peripheral side member overlaps the inner peripheral side member, and it is possible to bring out a subtle color tone in the central portion of the display panel, and the design variation is expanded.

Further, in the timepiece display panel of the present invention, the inner peripheral member is connected to the outer peripheral member by fitting the central projection provided on the inner peripheral member into the central hole provided on the outer peripheral member. It is characterized by having been done. In this case as well, the same effect can be obtained, and the inner peripheral side member is located (overlaps) below the outer peripheral side member. Therefore, there is no possibility that the solar cell can be seen through, and the strength is improved.
Depending on the combination of the materials, the color tone of the inner peripheral side member may overlap with the outer peripheral side member to produce a subtle color tone at the outer peripheral portion of the display panel, and the design variation is expanded.

In the timepiece display panel of the present invention, a base material made of the same material as the inner peripheral member and the outer peripheral member is attached to the back surface of the inner peripheral member and the outer peripheral member. It is characterized by. In this case as well, a similar effect can be obtained, and the base material is located (overlaps) below the outer peripheral member and the inner peripheral member, so that the strength is further improved and the solar cell is transparent. It does not look visible, and depending on the combination of materials,
The color tone of the base material overlaps with the color tone of the inner peripheral member, so that it is possible to create a subtle color tone on the entire display panel, and the design variation is expanded.

In the timepiece display panel of the present invention, when the outer peripheral member and the base material are made of a natural material made of precious stones, shells, glass or ceramics, the outer peripheral member and the base material may be used. An annular mounting member made of metal or plastic, on which a fixing portion for fixing to the timepiece body is formed, is fitted on the outer periphery, and a flange portion is provided on the back side of the mounting member so as to protrude inward from the periphery of the central hole. Is formed, and the outer peripheral side member and the base material are fitted in a concave portion formed by the central hole and the flange portion. In this case, the outer peripheral side member, a precious stone as a base material,
When using natural materials such as shells and ceramics, it is difficult to process protrusions and notches for attaching to the watch body, which increases the cost.However, mounting members such as metal or plastic require processing. It is easy, and between the module 4 disposed below the display plate member,
Since there is a gap corresponding to the thickness of the flange portion of the mounting member (100 to 200 μm), even if the module is deformed at the time of impact or the like, the module is not affected by the deformation, and cracks and damages to the timepiece display panel are prevented. Since it does not occur, the appearance and quality are not impaired.

A timepiece display panel of the present invention is a solar timepiece used in a solar timepiece display plate structure comprising a solar cell built in a timepiece and a solar timepiece display panel disposed on the front side of the solar cell. The display panel is characterized in that the light transmittance of the timepiece display panel that contributes to power generation is in the range of 10 to 60%. In this case, the function as a solar clock is ensured, and the solar cell positioned below is not seen through, so that the design variation can be expanded as described above.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of a watch display panel according to a first embodiment of the present invention used as a solar watch display panel in a wristwatch. FIG. 2 is a view of the watch display panel according to the first embodiment of the present invention. FIG. 3 is an enlarged sectional view and FIG. 3 is a plan view of a timepiece display panel according to the first embodiment of the present invention.

As shown in FIG. 1, a module 4 is fixed via a support frame 3 made of a synthetic resin fitted inside an outer shell 2, and a solar clock display panel structure A is provided on the front side of the module 4. It is configured. In addition, a needle shaft 5 having a double shaft configuration provided in the module 4 is made to pass through a central hole A1 formed in the solar clock display plate structure A, and is inserted into an outer shaft 5a of the needle shaft 5. The hour hand 6 and the minute hand 7 are attached to the inner shaft 5b, respectively. Further, the watch 1 is configured by attaching a back cover 9 to the bottom side of the outer body 2 via a waterproof packing 8 and attaching a windshield 10 to the front side of the outer body 2.

The display structure A for a solar clock is
Basically, as shown in FIG. 2, a solar cell 11 fixed to the front side of the module 4 and this solar cell 11
Of the watch is provided on the front side of the watch.

As shown in FIG. 2, the timepiece display panel 20 includes a circular ring-shaped outer peripheral member 22 and an outer peripheral member 2.
2 is formed of a disc-shaped inner peripheral side member 24 fitted in a circular central hole 23 formed. Further, on the upper surface of the outer peripheral side member 22 or the inner peripheral side member 24, a predetermined printing / time character 26 is formed by printing, painting, plating or the like.
When the inner peripheral member 24 is fitted into the central hole 23 of the outer peripheral member 22, an epoxy adhesive, an acrylic adhesive, a urethane adhesive, or an adhesive using a modified resin thereof, It is fitted via an ultraviolet-curable adhesive such as a UV-curable acrylic resin, a UV-curable urethane resin, or a UV-curable epoxy resin. Although not shown, a center hole corresponding to the above-described center hole A1 is provided in the center of the inner peripheral member 24.

The size of the timepiece display panel 20 is to be determined by the size of the timepiece, and is not particularly limited.
It has a round shape and an irregular shape (rectangular shape or the like), and has a thickness of 200 to 500 mm so that the light transmittance contributing to power generation is in the range of 10 to 60% as described later.
It is preferably set to μm. In addition, the ratio of the size of the outer peripheral member 22 to the inner peripheral member 24 depends on the arrangement relationship of the print / time character 26, the design, the light transmittance, and the like, and is particularly limited. However, it is preferable that the outer diameter R1 of the outer peripheral member 22 be 1.5 to 3.0 times the outer diameter r1 of the inner peripheral member 24. For example, the outer diameter R1 of the outer peripheral side member 22 is set to 30 m.
m and the outer diameter r1 of the inner peripheral member 24 may be about 12 mm.

As the material constituting the outer peripheral side member 22 and the inner peripheral side member 24, natural materials include (1) precious stones such as sapphire, blue pearl, onyx, and tramestone;
(2) shellfish such as white butterfly, (3) glass, or (4)
Ceramics such as Al ₂ O ₃ can be used, and (5) metals such as titanium, stainless steel such as SUS304, copper alloys such as brass, nickel silver, etc .;
(6) Polycarbonate and polyacetal resins (for example, “Duracon (trade name) Polyplastics Co., Ltd.)
And plastics such as “Delrin” (trade name, manufactured by Dupont) can be used, and the outer peripheral member 22 and the inner peripheral member 24 are made of different materials by appropriately combining them. It should be used for.

When a synthetic material such as metal or plastic is used as the outer peripheral side member 22, a fixing portion is formed to fix the timepiece display plate 20 to the timepiece body as shown in FIG. I have. That is, substantially rectangular protrusions 22A to 22D are formed at symmetrical positions on the outer peripheral portion of the outer peripheral side member 22, and these protrusions 22A to 22D are, as shown in FIG. Recess 1 formed in upper part
2 so as to be fixed. At this time, the upper surface of the timepiece display panel 20 and the upper surface of the support frame 3 are substantially flush with each other. In the present embodiment, a notch 22a for alignment is provided at the tip of one of the protrusions 22A to 22D among the protrusions 22A to 22D, and is provided in one of the recesses 12 of the support frame 3. The alignment is made possible by fitting with the projected portion 12A for alignment.

In order to fix the timepiece display panel 20 to the timepiece body, instead of such protrusions 22A to 22D, as shown in FIG. A substantially semicircular cutout portion 22'A to 22'D is formed at a position, and the cutout portion 22'A to 22'D is fixed so as to fit with a projecting portion (not shown) formed corresponding to the support frame 3. Alternatively, as shown in FIG. 6, a substantially circular hole 22 "A to 22" D is formed at a symmetrical position near the outer peripheral portion, and the module 4 is formed.
It is possible to adopt a configuration in which a projection (not shown) formed corresponding to the front side is fixed by fitting. When one of the outer peripheral member 22 and the inner peripheral member 24 is made of metal, a small columnar metal (generally referred to as “et foot”) is spot-welded on the back surface of the metal. The module 4 may be welded and protruded, and fixed so as to fit into a concave portion (not shown) formed on the front side of the module 4. In this embodiment,
It has only one of the protrusions, notches, and holes, but it may have two or more, and the number of the protrusions, notches, and holes is four and provided at symmetrical positions. In the present invention, two or more protrusions, notches, and holes may be provided at non-target positions.

However, when a natural material such as precious stones, shells, or ceramics is used as the outer peripheral member 22, it is difficult to process such protrusions and cutouts, which increases the cost. Therefore, in this case, FIG.
As shown in (1), an annular mounting member 30 made of metal or plastic and having a fixing portion for fixing to the timepiece main body is fitted around the outer peripheral member 22.
That is, on the back side of the mounting member 30, a flange 32 projecting inward from the peripheral edge of the central hole 31 is formed, and a concave portion 33 formed by the central hole 31 and the flange 32 is provided with a ring-shaped outer peripheral side. A member 22 is fitted. When the attachment member 30 is fitted to the outer periphery of the outer peripheral member 22, an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, an adhesive using a denatured resin thereof, or an ultraviolet-curable adhesive thereof is used. It is fitted via a mold adhesive.

As shown in FIG. 7 (b), substantially rectangular projections 32A to 32D are formed at symmetrical positions on the outer peripheral portion of the mounting member 30 as fixing portions for fixing to the timepiece body. The projections 32A to 32D are fixed by being fitted into the recesses 12 formed in the upper part of the support frame 3, as in FIG. It should be noted that such a fixing portion has the same configuration as a cutout portion as shown in FIG. 5, a circular hole as shown in FIG. 6, a protruding portion formed by welding a small metal column in the case of metal. Of course, it is also possible.

The size of the mounting member 30 depends on the size of the intended timepiece.
0, the ring width is 170 to 250 μm, the protruding width of the flange 32 is 700 to 750 μm, and the thickness of the flange 32 is 100 to
It is preferably 200 μm. In this case, a gap is provided between the outer peripheral member 22 and the inner peripheral member 24 and the module 4 disposed thereunder by the thickness of the flange 32 of the mounting member 30 (100 to 200 μm). Therefore, even if the module 4 is deformed at the time of impact or the like, the module 4 is not affected by the deformation, and the watch display panel is not cracked or damaged, so that the appearance and quality are not impaired.

In this embodiment, the outer peripheral member 22 has a circular ring shape and the inner peripheral member 24 has a disk shape.
According to the shape of the timepiece, the inner peripheral member 24 may be a rectangular disk, an elliptical disk, or the like, and the outer peripheral member 22 may be formed in a ring shape according to these shapes. The shape of the central hole 23 provided can be appropriately changed to a shape other than the circular hole in consideration of design variations in accordance with these shapes. It is needless to say that the outer peripheral side member 22 may be a rectangular disk (including a square), an elliptical disk or the like instead of the circular ring shape, and the inner peripheral side member 24 may be a disk shape.

FIG. 7B shows the mounting member 30.
In addition to the circular ring as shown in FIG. 17, a rectangular ring-shaped mounting member 30 'having protrusions 32'A and 32'C as shown in FIG. 16, and a protrusion 32 "as shown in FIG. A,
Of course, it is also possible to form an elliptical annular mounting member 30 "having 32" C.

In the timepiece display panel 20 configured as described above, the material forming the outer peripheral member 22 and the inner peripheral member 24 is set so that the light transmittance contributing to power generation is in the range of 10 to 60%. May be appropriately selected from the above (1) to (6), and their thickness and the dimensional ratio of the outer peripheral member 22 and the inner peripheral member 24 may be determined.

The light transmittance in the present invention is determined from the amount of power generated by the solar cell by the light transmitted through the dial for the solar cell clock. That is, in a device in which external light is prevented from entering, light is applied to a solar cell placed at a fixed distance from a light source, and a current value when converted from light energy to electric energy is A ₀ , Is a numerical value in which a current value measured in the same manner as described above is indicated by A ₁ , and A ₁ is expressed as a percentage of A ₀ , with a dial for a solar battery timepiece placed on the upper surface of FIG.

When used as a solar clock display panel, it is necessary to transmit light even in a part of the display panel. Therefore, it is necessary to select such a combination. A combination of plastic and the inner peripheral member 24 made of plastic or ceramic is particularly preferable from the viewpoint of light transmittance.

The outer peripheral member 22 or the inner peripheral member 24
When a ceramic such as Al ₂ O ₃ is used as a constituent material of the above, the purity is 99.90% or more, preferably 9% or more.
It is composed of 9.99% or more of Al ₂ O ₃ and has a light transmittance of 20%.
６０60%, preferably 40-60%. Further, from the viewpoint of light transmittance, a white color is desirable, and when the purity of Al ₂ O ₃ is in the above range, light transmittance is reduced due to absorption of impurity light,
This is because if the color is not colored during the manufacture and the light transmittance is in the above range, the color of the solar cell can be sufficiently concealed, and there is no hindrance to the supply of light energy to the solar cell. Further, the surface roughness (R _a ) measured by a stylus type surface roughness meter is 0.01 to 2 μm, preferably 0.02 to 2 μm.
It is desirable to be in the range of 1 μm. Surface roughness is 0.0
If the thickness is less than 1 μm, the dial for a solar battery watch has a glossy white color, and the light transmittance is reduced. If the surface roughness is more than 2 μm, the scattered light increases and the white color tone becomes dark, and the light transmittance decreases. To produce such Al ₂ O ₃ , the purity must be 99.90%.
And Al ₂ O ₃ described above, polyvinyl alcohol, an organic binder such as polyethylene oxide, were mixed with water to prepare an Al ₂ O ₃ mixture, the Al ₂ O ₃ mixture dried and granulated with granular After preparing a dial plate precursor from the granular material, the dial plate precursor is fired at 700 to 1500 ° C. in an air atmosphere to prepare a calcined product. 1 × 10 ^-2 to 1 × 10 ^-5
It may be fired at 1500 to 1800 ° C. under Torr pressure for 1 to 10 hours.

If the light transmittance is within the range of 20 to 60%, the color tone may be used. In this case, Al ₂ O
Method of making colored members by putting other metal oxides in ₃ ,
There is a method in which a glaze is applied to the front or back surface of a ceramic to form a colored member. Although alumina (Al ₂ O ₃ ) has been described as the ceramic, it is a matter of course that zirconia-based ceramics (ZrO ₂ , zirconia content of 80% or more) can be used.

The outer peripheral member 22 or the inner peripheral member 24
However, when plastic, through the display plate, the solar cell located below the display plate and the crosshairs of the insulating band and the like are not seen through, and furthermore, the display plate is colored, and the color tone is included. In order to expand the design variation, the plastic is made of a transparent resin, and a light diffusing agent, a phosphorescent phosphor, and one or more color diffusing agents selected from coloring agents made of dyes or pigments. It is preferred to process, for example, to contain a color diffusing agent.

As such a light diffusing agent, silicic acid powder, calcium carbonate powder, calcium phosphate powder and the like can be used, and the particle diameter thereof is 5 to 15 μm in consideration of an intended diffusion effect. It is preferably about 8 to 12 μm.

As the phosphorescent phosphor, a long-persistence phosphorescent phosphor is preferable. For use in a solar clock, it has a high light transmittance so as not to hinder the power generation of the solar cell. Things are good, have a luxurious color tone,
Those that emit light brightly for as long as possible in a dark environment are preferred.

As such a phosphorescent phosphor, a green light-emitting phosphorescent phosphor, that is, a compound represented by MAl ₂ O ₄ , as disclosed in Japanese Patent Application Laid-Open No. 7-011250, wherein M is A phosphorescent phosphor having, as a mother crystal, a compound comprising at least one or more metal elements selected from the group consisting of calcium, strontium, and barium; and at least one phosphor selected from the group consisting of calcium, strontium, and barium. Luminescent phosphors in which a metal and magnesium are combined, or europium as an activator for these phosphors in an amount of 0.1% by mole based on the metal element represented by M.
Phosphorescent phosphors containing 001% or more and 10% or less can be used.

Further, as a phosphorescent phosphor, MO.a (Al ₁ -bB _b ) ₂ O ₃ : cR 0 .3 as disclosed in US Pat. No. 5,376,303. 5 ≦ a ≦ 10.0 0.0001 ≦ b ≦ 0.5 0.0001 ≦ c ≦ 0.2 (where MO is MgO, CaO, SrO, and ZnO
At least one divalent metal oxide selected from the group consisting of: wherein, in addition to Eu ²⁺ , Pr, Nd, Dy and T
m, which is at least one or more rare earth elements selected from the group consisting of m). Of course, other phosphorescent phosphors can also be used.

The coloring agent may be a white ink such as an acrylic resin or a urethane resin mixed with a pearl pigment (for example, "Pearl Grace (trade name)" manufactured by Nippon Koken Co., Ltd.). It can be used, and the type of pigment or dye may be appropriately selected from the desired color tone. For example, as a pigment component of white color tone, titanium oxide, zinc oxide, etc. Ferrous) and a pigment or dye containing chromium oxide as a green color tone component. A method of applying such a color-imparting agent as an ink or a paint to form a color on plastic by forming it on plastic, or a method of mixing a color-imparting agent into plastic and colorizing it by means such as injection molding. Can be used.

Further, a minute uneven portion may be formed on the surface on the light incident side to have a light diffusion function, and chromium, nickel, aluminum, or the like may be formed on the back surface on the solar cell side.
An extremely thin metal film, for example, 100, is formed by using a metal having high light reflectance such as palladium, rhodium, and platinum by, for example, vapor deposition, dry plating such as ion plating.
A reflective layer formed as a metal coating of 0 to 3000 °, preferably 1500 to 2500 ° may be provided.

As described above, when a plastic is treated with a light diffusing agent, a phosphorescent phosphor, a color diffusing agent composed of a coloring agent composed of a dye or a pigment, the display plate is colored by a specific color tone of the plastic. The visibility of the display panel is improved, and these light diffusion effects prevent the underlying solar cells and crosshairs from being seen through, greatly increasing the design variation including color tone. It is enlarged, the appearance quality is improved, and the commercial value is improved. In addition, coloring
In a display panel that contains a luminous phosphor as a light diffusing agent, the light that contributes to the power generation of the solar cell in a bright environment, together with such an effect, excites the long persistence luminous phosphor. Therefore, in a dark environment such as at night, the light continues to be emitted due to its afterglow characteristic, and the front side of the display panel is illuminated. Therefore, the time can be confirmed even in a dark environment such as at night.

In the present embodiment, the timepiece display panel 20 is used as a solar timepiece display panel, but can be used for an EL (electroluminescence) timepiece. In this case, the outer peripheral member 22 or the inner peripheral member 24
In the case of plastic, the EL cell located below the display plate is not seen through the display plate,
In addition, a hologram is used as the material in order to color the display panel and expand design variations including color tones. As shown in FIG. 8, a polyester layer or a polyethylene terephthalate layer 201 which is a transparent resin layer is provided on an EL (electroluminescence) cell 200.
And a reflection plate 203 in which a hologram layer 202 is integrated, and a surface protection layer 205 made of a transparent or translucent synthetic resin is laminated on the hologram layer 202 via an adhesive 204. Such a reflector 203 includes a general volume (Lipman) hologram and the like. The function of the reflector 203 will be described below.

The hologram layer 202 has upper and lower surfaces 202.
a and a virtual mirror surface 208 which is a reflection surface different from the surface 202b. Therefore, the incident light 2 incident from the light source 206
06a are upper and lower surfaces 202a, 20
The light is tilted by the virtual mirror surface 208 so as not to coincide with the surface reflected lights 206b and 206c reflected by 2b, and reflects only light of a specific wavelength. Therefore, the reflected light 206d reflected by the virtual mirror surface 208 has a certain predetermined color and reaches the eyes of the observer 207, and the color of the EL cell 200 is hidden by such an action. It cannot be seen through. When the EL cell 200 emits light by applying an AC voltage to the electrode of the EL cell 200, the light emission and the hologram layer 202 are emitted.
And the reflected light 206d reflected by the virtual mirror surface 208 of the image of FIG. The design variation including the color tone is greatly expanded by the color tone presented by the hologram layer 202, the appearance quality is improved, and the commercial value is improved.

Further, in this embodiment, an example is described in which the clock display panel 20 is used for a solar clock display panel or a timepiece with EL (electroluminescence), but the clock display panel 20 is used for displaying a normal clock. Of course, it can be used as a plate.

Further, in this embodiment, the timepiece display panel 20
The printing / time character 26 is formed directly on the upper surface of the outer member 22, that is, the upper surface of the outer member 22 and the inner member 24. For example, a transparent resin such as an acrylic resin, a urethane resin, an alkyd resin, an epoxy resin After forming the surface protective coating layer made of a resin, a printing / time character 26 may be formed on the upper surface, and the weather resistance and the moisture resistance are improved.

The above description is basically the same in the following second to fifth embodiments, and is similarly applied unless otherwise specified.

[0055]

EXAMPLE 1 diameter 26 mm, a thickness of 300μm, Al ₂ O ₃ (99.99% purity of a circular ring shape having a central hole having an inner diameter of 17mm at the center thereof, the light transmittance of 50%, a surface roughness R _a = 0.05 μm (based on JIS B 0601, measured by Mitutoyo Corporation, “Surf Pack”). A disk-shaped onyx having an outer diameter slightly smaller than the center hole and having a thickness of 300 μm was fitted into the center hole of the Al ₂ O ₃ plate using an epoxy-based adhesive to produce a timepiece display panel. .

When the light transmittance of this was measured on a solar cell, the light transmittance was about 30%. Further, the solar cell was not seen through and its color tone was full of luxury.

FIG. 9 is an enlarged sectional view of a timepiece display panel according to a second embodiment of the present invention. Clock display panel 40 of the present embodiment
Is composed of a substantially disk-shaped outer peripheral member 42 and a disk-shaped inner peripheral member 44 fitted in a central recess 43 formed at the center of the outer peripheral member 42. As in the first embodiment, the inner peripheral member 44 is connected to the central hole 4 of the outer peripheral member 42.
When fitting to 3, an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive or an adhesive using these modified resins, or a UV-curable acrylic resin, UV
It is fitted via an ultraviolet curable adhesive such as a curable urethane resin or a UV curable epoxy resin.

The size of the central concave portion 43 formed at the center of the outer peripheral member 42, that is, the size of the inner peripheral member 44 (although it is slightly smaller than the size of the central concave member 43) is as follows.
It depends on the arrangement relationship of the printing / time character 26, the design, the light transmittance, and the like, and is not particularly limited. The diameter r2 of the member 44 is in the range of 50% to 70%, the thickness t2 of the inner peripheral member 44 is 100 μm to 250 μm in consideration of strength and the like, and 20% of the thickness T2 of the outer peripheral member 42. It is preferable to set it in the range of ５０50%. For example, the outer diameter R2 of the outer peripheral side member 42 is 26 m
In the case where m and the thickness T2 are 500 μm, the diameter r2 of the inner peripheral side member 44 may be 17 mm and the thickness t2 may be 200 μm. In this case, in order to manufacture the outer peripheral member 42, the outer peripheral member 42 may be formed by molding, or may be formed by cutting a concave portion after punching.

Further, the outer peripheral member 42 and the inner peripheral member 4
The materials constituting No. 4 are the same as those in the first embodiment, and are precious stones such as sapphire, blue pearl, onyx, and tramestone, shells such as white butterfly, glass, or Al ₂ O.
Natural materials such as ceramics such as ₃ , titanium, SUS
Metals such as stainless steel such as 304, brass, copper alloys such as nickel silver, synthetic materials such as polycarbonate and plastics such as polyacetal resin can be used,
These may be appropriately combined and selected from different materials. When used as a solar clock display panel,
For example, a combination in which the outer peripheral member 42 is made of polycarbonate and the inner peripheral member 44 is made of metal subjected to surface treatment such as patterning, plating, and painting is particularly preferable in terms of light transmittance, strength, and design.

When a synthetic material such as metal or plastic is used for the outer peripheral side member 42 as in the first embodiment, the timepiece display panel 40 is connected to the timepiece main body in the same manner as in the first embodiment. A projection, a notch, a hole, or the like (not shown), which is a fixing portion, is formed in order to fix the fixing portion to the base.

Further, as the outer peripheral side member 42, a precious stone,
When a natural material such as shellfish or ceramics is used, similarly to the first embodiment, as shown in FIG. Alternatively, an annular mounting member 50 made of metal or plastic on which a fixing portion (not shown) such as a hole is formed is fitted. Note that the configuration of the mounting member 50 is the same as that of the mounting member 30 of the first embodiment, and a description thereof will be omitted.

In this embodiment, the outer peripheral member 42 is located (overlaps) below the circular ring-shaped inner peripheral member 44.
As a result, the solar cell does not show through, and depending on the combination of materials, the inner peripheral side member 4
4, the color tone of the outer peripheral side member 42 overlaps, and it is possible to produce a subtle color tone at the center of the display panel.

[0063]

EXAMPLE 2 A disk-shaped transparent resin plate such as a polycarbonate (polycarbonate) resin having a diameter of 26 mm, a thickness of 300 μm, and a central concave portion having an inner diameter of 17 mm and a depth of 150 μm at its center was prepared. On the surface of this transparent resin plate, a light diffusing agent of calcium carbonate powder (particle diameter of about 8 to 12 μm) is kneaded in a range of 10% by weight with respect to the powder of the green light-emitting phosphorescent phosphor of BaAl ₂ O. Then, a binder made of an acrylic transparent resin was mixed in an amount of 50 parts by weight with respect to 100 parts by weight of the phosphorescent phosphor to form a phosphorescent phosphor layer having a thickness of 100 μm applied on the front side of the display substrate.

Next, a disc-shaped white butterfly shell having a thickness slightly smaller than that of the central hole and having a thickness of 200 μm was fitted to the central hole of the polycarbonate plate using an epoxy-based adhesive to display a timepiece. A plate was made.

When the light transmittance of this was measured on a solar cell, the light transmittance was about 40%. The color tone was also a pale green color exhibited by the fluorescent phosphor, and the solar cell was not seen through, and the color tone was white butterfly. The shell was pale and rainbow-colored and pale green tones, giving it a sense of luxury.

FIG. 11 is an enlarged sectional view of a timepiece display panel according to a third embodiment of the present invention. Clock display panel 6 of this embodiment
Reference numeral 0 denotes an outer peripheral member 62 having a circular ring shape and an inner peripheral member 64 having a substantially disc shape, and a central hole 63 formed at a central portion of the outer peripheral member 62, and an inner peripheral member 64. The outer peripheral member 62 and the inner peripheral member 64 are joined by fitting the formed cylindrical central projecting portion 64A. As in the first embodiment, when joining the inner peripheral member 64 to the outer peripheral member 62, an epoxy-based adhesive,
Acrylic adhesive, urethane-based adhesive or adhesive using these modified resins, or UV-curable adhesive such as UV-curable acrylic resin, UV-curable urethane resin, UV-curable epoxy resin, etc. It is fitted.

The dimension of the central hole 63 formed at the center of the outer peripheral member 62, that is, the dimension of the cylindrical central projecting portion 64A formed at the inner peripheral member 64 (the central hole 6)
3) is equivalent to the size of the inner peripheral side member 64 that appears on the surface of the timepiece display panel 60, and the positional relationship of the printing / time character 26, the design, the light transmission, and the like. The diameter r3 of the central protruding portion 64A is 50% to 70% with respect to the outer diameter R3 of the outer peripheral side member 62.
%, The height h3 of the central projecting portion 64A is set to 100 μm to 250 μm in consideration of strength and the like, and is set to be in a range of 20% to 50% with respect to the entire thickness T3 of the timepiece display panel 60. Is preferred. For example, the thickness T3 of the clock display panel 60 is 500 μm, and the outer diameter R3 of the outer peripheral member 62 is 2 μm.
When the diameter is 6 mm, the diameter r3 of the central projection 64A is 1
The height h3 of the central projecting portion 64A may be set to 200 μm. In this case, in order to manufacture the inner peripheral side member 64, the inner peripheral side member 64 may be formed by molding, or may be formed by cutting a concave portion after punching.

Further, the outer peripheral member 62 and the inner peripheral member 6
The materials constituting No. 4 are the same as those in the first embodiment, and are precious stones such as sapphire, blue pearl, onyx, and tramestone, shells such as white butterfly, glass, or Al ₂ O.
Natural materials such as ceramics such as ₃ , titanium, SUS
Metals such as stainless steel such as 304, brass, copper alloys such as nickel silver, synthetic materials such as polycarbonate and plastics such as polyacetal resin can be used,
These may be appropriately combined and selected from different materials.

When used as a solar clock display panel, for example, a combination in which the outer peripheral member 62 is made of white butterfly and the inner peripheral member 64 is made of ceramics is particularly preferable in terms of light transmittance and design.

When a synthetic material such as metal or plastic is used as the outer peripheral member 62, a fixing portion for fixing the timepiece display panel 60 to the timepiece body as in the first embodiment. Projection, notch or hole (not shown)
Are formed. In the case of the present embodiment, since the inner peripheral member 64 is also located on the outermost peripheral side of the timepiece display panel 60, it is a matter of course that a fixing portion may be provided on this.

Further, as the outer peripheral side member 62,
When a natural material such as shellfish or ceramics is used, as in the first embodiment, as shown in FIG. Alternatively, an annular mounting member 70 made of metal or plastic on which a fixing portion (not shown) such as a hole is formed is fitted. Note that the configuration of the mounting member 70 is the same as that of the mounting member 30 of the first embodiment, and a description thereof will be omitted.

In this embodiment, the inner peripheral member 64 is located (overlaps) below the circular ring outer peripheral member 62.
Therefore, there is no possibility that the solar cell can be seen through, and depending on the combination of materials, the outer peripheral side member 6
2, the color tone of the inner peripheral side member 64 overlaps, and it is possible to produce a subtle color tone at the outer peripheral portion of the display panel.

[0073]

EXAMPLE 3 A substantially disc-shaped transparent resin plate such as a polycarbonate (polycarbonate) resin having a diameter of 26 mm, a thickness of 300 μm, and a central projection with a diameter of 17 mm and a height of 200 μm at the center was prepared. On the surface of the transparent resin plate, powder of calcium carbonate (particle size: about 8 to 12 μm) was applied to the powder of the green light-emitting phosphorescent phosphor of BaAl ₂ O.
In a range of 10% by weight, and a binder made of an acrylic transparent resin is mixed with the light diffusing agent.
The mixture was mixed in an amount of 50 parts by weight with respect to parts by weight to form a phosphorescent phosphor layer having a thickness of 100 μm applied on the front side of the display substrate.

Next, a 200 μm thick circular ring-shaped colored ceramic having an inner diameter slightly larger than the central projection is fitted into the center hole of the Al ₂ O ₃ plate using an epoxy adhesive. In this way, a watch display plate was manufactured.

When the light transmittance of this was measured on a solar cell, the light transmittance was about 40%, and the color tone was also a pale green color tone exhibited by the fluorescent phosphor, and the solar cell was not seen through, and the color tone was a colored ceramic. Green (with a green glaze applied to the ceramic surface) and light green tones give it a luxurious look, with subtle tones especially in the outer part.

FIG. 13 is an enlarged sectional view of a timepiece display panel according to a fourth embodiment of the present invention. Clock display panel 8 of this embodiment
0 has a basic configuration in that it has a circular ring-shaped outer peripheral member 82 and a disk-shaped inner peripheral member 84 fitted in a circular central hole 83 formed in the outer peripheral member 82. The structure is the same as that of the first embodiment described above, but the base material 91 is further provided on the back surface thereof, that is, on the solar cell side.
Is different. Therefore, the configuration other than the base material 91 is the same as that of the first embodiment, and the description thereof is omitted.

As in the first embodiment, when the base material 91 is attached to the inner peripheral member 84 and the outer peripheral member 82, an epoxy adhesive, an acrylic adhesive, a urethane adhesive is used. The bonding may be performed using an agent or an adhesive using a modified resin thereof, or an ultraviolet-curable adhesive such as a UV-curable acrylic resin, a UV-curable urethane resin, or a UV-curable epoxy resin.

The outer diameter of the base member 91 is the same as the outer diameter of the outer peripheral member 82, and the thickness t4 of the base member 91 is reduced to the total thickness T4 of the timepiece display panel 80. On the other hand, it is preferable to be in the range of 20% to 40%. For example, the thickness T4 of the timepiece display panel 80 is set to 500
μm, the thickness t4 of the base substrate 91 is set to 200 μm
And it is sufficient.

Further, the material forming the base substrate 91 is the same as the inner peripheral member 84 and the outer peripheral member 82, and is made of precious stones such as sapphire, blue pearl, onyx, and trame stone, and white butterfly shells. Shellfish, glass, or Al ₂ O
Natural materials such as ceramics such as ₃ , titanium, SUS
Metals (having slits and holes that transmit light) such as stainless steel such as 304, copper alloy such as brass and nickel silver, and synthetic materials such as plastics such as polycarbonate and polyacetal resin can be used. What is necessary is just to select suitably combining.

When used as a solar clock display panel, for example, a combination in which the outer peripheral side member 82 is made of a white butterfly shell and the inner peripheral side member 84 is made of a precious stone such as blue pearl gives a sense of luxury in design. And particularly preferred.

When a synthetic material such as metal or plastic is used as the outer peripheral side member 82, it is a fixing portion for fixing the timepiece display plate 80 to the timepiece body as in the first embodiment. Projection, notch or hole (not shown)
Are formed. In the case of the present embodiment, the base member 91 is also located on the outermost peripheral side of the timepiece display panel 80, so that it is a matter of course that a fixing portion may be provided thereon.

Further, the outer peripheral member 82 and the base material 9
When a natural material such as precious stones, shells, or ceramics is used as 1, as shown in FIG. 14, as shown in FIG.
An annular mounting member 90 made of metal or plastic and formed with a fixing portion (not shown) such as a protrusion, a notch, or a hole for fixing to the watch main body is fitted. The configuration of the mounting member 90 is the same as that of the mounting member 3 of the first embodiment.
Since the configuration is the same as 0, the description is omitted.

In this embodiment, since the base material 91 is located (overlaps) below the outer peripheral member 82 and the inner peripheral member 84, the strength is improved and the solar cell can be seen through. In addition, depending on the combination of the materials, the color tone of the base material overlaps with the color tone of the outer peripheral member 82 and the inner peripheral member 84, so that a subtle color tone can be produced on the entire display panel.

[0084]

Example 4 A circular ring-shaped white butterfly shell plate having a diameter of 26 mm, a thickness of 200 μm, and a central hole having an inner diameter of 17 mm at the center was prepared. A disc-shaped blue trameterite having a thickness of 200 μm and having an outer diameter slightly smaller than the center hole is fitted into the center hole of the Al ₂ O ₃ plate using an epoxy-based adhesive to produce a timepiece display panel. did. The lower surface has a diameter of 26
A white butterfly shell plate having a thickness of 100 μm and a thickness of 100 μm was bonded using an epoxy adhesive.

When this was measured on a solar cell, the light transmittance was about 40%. Further, the solar cell was not seen through and the solar cell was not seen through. The stone was full of luxury with the blue color, and the subtle color tone was produced especially in the center.

FIG. 15 is an enlarged sectional view of a timepiece display panel according to a fifth embodiment of the present invention. Clock display panel 1 of the present embodiment
00 is a disk-shaped inner peripheral member 104 and inner peripheral member 104
Substantially circular ring-shaped outer peripheral side member 10 fitted around the outer periphery
And 2.

In this case, when a natural material such as precious stone, shell, ceramics, etc. is used as the inner peripheral member 104,
Since it is difficult to perform processing such as protrusions and cutouts on the inner peripheral member 104 and the cost increases, the outer peripheral member 102 itself has the same configuration as the mounting member 30 as shown in the first embodiment. It was done. That is, the configuration is such that an annular outer peripheral member 102 made of metal or plastic on which a fixing portion for fixing to the timepiece body is formed is fitted to the outer periphery of the inner peripheral member 104.

That is, on the back side of the outer peripheral side member 102,
A flange 102 protruding inward from the periphery of the central hole 102a
b is formed, and the central hole 102a and the flange 102
The inner peripheral side member 104 is fitted in the concave portion 102c formed by b. Note that the dimensions and the like of the outer peripheral side member 102 are the same as those in the first embodiment, and a description thereof will be omitted.

In the above embodiment, two types of dissimilar members are used and the structure of the inner peripheral member and the outer peripheral member has been described. You may comprise more than kinds of display members. For example, as shown in FIG. 19, an outer peripheral member 522 and two kinds of different members (524, 524 ′) are adhered to the inner side with an adhesive, and the front side of the display panel 500 is made of three types of members. It is also possible to configure with. Thereby, the design variation can be further expanded.

In the case where the outer shape of the display panel is irregular (other than round), as shown in FIG. 18, two or more kinds of different members (422A to 422E) are formed in a stripe shape, and each member is formed. The display panel 400 may be bonded to each other with an adhesive so that the surface of the display panel 400 has a stripe shape. As a result, the design variation of the odd-shaped display panel can be expanded, and a display panel with an unprecedented sense of quality can be provided.

[0091]

According to the timepiece display panel of the present invention, there is provided a watch-shaped timepiece display board incorporated in a timepiece body, wherein at least a portion of the display board exposed at least on the surface side is made of at least two kinds of different members. The display member is composed of an inner peripheral member and an outer peripheral member, and the inner peripheral member and the outer peripheral member are formed of natural materials such as precious stones, shells, glass, and ceramics. Since it is made of metal and plastic, it has the following unique and remarkable effects. (1) When used as a solar clock display panel or an EL clock display panel, the solar cell, the crosshairs of the insulating band, the EL cell, and the like are not seen through, and the light transmittance contributing to power generation is reduced. Since the setting is made, the function does not decrease, and the appearance and the commercial value do not decrease. (2) It is possible to color and multi-color the display board,
By freely combining high-quality materials, such as precious stones, it is possible to expand the design variations in the same manner as a normal clock display board, and to provide a high-quality, luxury watch. (3) When the outer peripheral member is made of a natural material such as precious stones, shells, glass, or ceramics, a metal having a fixing portion formed on the outer periphery of the outer peripheral member to be fixed to the timepiece body. Alternatively, in the case of a display plate having a configuration in which an annular mounting member made of plastic is fitted, it is difficult to perform processing such as a protrusion or a notch on the outer peripheral side member for mounting on the timepiece body, and the cost increases. If such a mounting member is used, processing is easy, and there is a gap between the module and the module disposed below the display plate member by the thickness of the flange of the mounting member. Even if the module is deformed in, for example, it is not affected by the deformation, and the watch display panel is not cracked or damaged, so that the appearance and quality are not impaired. (4) In a display panel using a plastic containing a luminous phosphor as a material as a coloring imparting / light diffusing agent,
The solar cell does not show through, and the light that has contributed to the power generation of the solar cell in a bright environment excites the long-persistent phosphorescent phosphor. Since the front side of the display panel is continuously illuminated by the light characteristics, the time can be confirmed even in a dark environment such as at night. (5) Further, when a hologram is used, colors in the visible light range can be emitted, so that various color expressions can be exhibited. (6) In the timepiece display panel of the present invention, the light transmittance of 10% or more can be secured in any structure, so that the power generation of the solar cell is not hindered. Never stop.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view in which a watch display panel according to a first embodiment of the present invention is used for a wristwatch as a solar watch display panel.

FIG. 2 is an enlarged sectional view of the timepiece display panel according to the first embodiment of the present invention.

FIG. 3 is a plan view of the timepiece display panel according to the first embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view illustrating a fixed state of the timepiece display panel of the first embodiment of the present invention.

FIG. 5 is a plan view showing another embodiment of the fixing portion of the timepiece display panel of the first embodiment of the present invention.

FIG. 6 is a plan view showing still another embodiment of the fixing portion of the timepiece display panel according to the first embodiment of the present invention.

FIG. 7A is an enlarged sectional view showing another embodiment of the timepiece display panel of the first embodiment of the present invention, and FIG. 7B is a plan view thereof.

FIG. 8 is a cross-sectional view for explaining a material when the timepiece display panel of the first embodiment of the present invention is used for an EL-equipped timepiece.

FIG. 9 is an enlarged sectional view of a timepiece display panel according to a second embodiment of the present invention.

FIG. 10 is an enlarged sectional view showing another embodiment of the timepiece display panel of the second embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a timepiece display panel according to a third embodiment of the present invention.

FIG. 12 is an enlarged sectional view showing another aspect of the timepiece display panel of the third embodiment of the present invention.

FIG. 13 is an enlarged sectional view of a timepiece display panel according to a fourth embodiment of the present invention.

FIG. 14 is an enlarged sectional view showing another embodiment of the timepiece display panel of the fourth embodiment of the present invention.

FIG. 15 is an enlarged sectional view of a timepiece display panel according to a fifth embodiment of the present invention.

FIG. 16 is an enlarged sectional view showing another embodiment of the mounting member of the timepiece display panel of the present invention.

FIG. 17 is an enlarged sectional view showing still another embodiment of the mounting member of the timepiece display panel of the present invention.

FIG. 18 is a plan view showing another embodiment of the timepiece display panel of the present invention.

FIG. 19 is a plan view showing still another embodiment of the timepiece display panel of the present invention.

FIG. 20 is a plan view of a wristwatch provided with a conventional solar watch display panel structure.

FIG. 21 is a partially enlarged sectional view of a conventional solar watch display panel structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wristwatch 4 ... Module 11 ... Solar cell 20, 40, 60, 80, 100 ... Clock display board 22, 42, 62, 82, 102 ... Outer peripheral side member 24, 44, 64, 84, 104 ... Inner peripheral member 30,50,70,90 ... Mounting member 91 ... Base substrate

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G04G 9/00 301 G04G 9/00 301C 302 302D

Claims (20)

[Claims] 1. A watch-shaped timepiece display plate incorporated in a timepiece body, wherein at least a portion of the display plate exposed on the front surface side is formed of at least two kinds of display members made of different kinds of members. A clock display board characterized by the above-mentioned. 2. The timepiece display panel according to claim 1, wherein the display member comprises an inner peripheral side member and an outer peripheral side member. 3. The timepiece display board according to claim 2, wherein the inner peripheral member is fitted into a central hole provided in the outer peripheral member. 4. The timepiece display panel according to claim 2, wherein the inner peripheral member is fitted in a central recess provided in the outer peripheral member. 5. The inner peripheral side member is connected to the outer peripheral side member by fitting a central protruding portion provided on the inner peripheral side member into a central hole provided on the outer peripheral side member. The timepiece display panel according to claim 2. 6. The precious stone, shellfish, glass,
The timepiece display panel according to any one of claims 2 to 5, wherein the timepiece display panel is made of any one of a natural material made of ceramics and a synthetic material made of metal or plastic. 7. The method according to claim 2, wherein the outer peripheral member is made of a natural material made of precious stones, shells, glass, or ceramics, or a synthetic material made of metal or plastic. 7. The timepiece display panel according to any one of 6. 8. When the outer peripheral member is made of a synthetic material made of metal or plastic, a fixing portion for fixing to the timepiece body is formed on the outer peripheral member. Item 8. A timepiece display panel according to item 7. 9. A flange protruding inward from a peripheral edge of the central hole is formed on the back side of the outer peripheral member, and the inner peripheral member is fitted into a concave portion formed by the central hole and the flange. 9. The timepiece display panel according to claim 8, wherein: 10. A fixing portion for fixing to a timepiece body is formed on an outer periphery of the outer peripheral side member when the outer peripheral side member is made of a natural material made of precious stone, shell, glass or ceramics. 8. The timepiece display panel according to claim 7, wherein an annular mounting member made of metal or plastic is fitted. 11. A flange portion is formed on the back side of the mounting member so as to protrude inward from a peripheral edge of the central hole, and the outer peripheral member is fitted into a concave portion formed by the central hole and the flange portion. The timepiece display panel according to claim 10, wherein: 12. The timepiece display panel according to claim 2, wherein a base material is adhered to the back surfaces of the inner peripheral member and the outer peripheral member. 13. The method according to claim 12, wherein the base material is made of any one of a natural material made of precious stones, shells, glass, or ceramics, and a synthetic material made of metal or plastic. Clock display board as described. 14. When the outer peripheral member or the base material is made of a synthetic material made of metal or plastic, a fixing portion for fixing the timepiece body to the outer peripheral member or the base material is formed. The timepiece display panel according to claim 13, wherein: 15. When the outer peripheral member and the base material are made of a natural material made of precious stones, shells, glass, or ceramics, the outer peripheral member and the base material are fixed to the timepiece body on the outer periphery of the outer peripheral member and the base material. The timepiece display panel according to claim 13, wherein an annular mounting member made of metal or plastic and having a fixing portion formed thereon is fitted. 16. A flange portion is formed on the back side of the mounting member so as to protrude inward from a peripheral edge of the central hole, and the outer peripheral member and the base material are provided in a concave portion formed by the central hole and the flange portion. The timepiece display panel according to claim 15, wherein the timepiece display panel is fitted. 17. The fixing device according to claim 8, wherein the fixing portion comprises a projecting portion, a notch, or a hole.
The timepiece display panel according to any one of 0, 14, and 15. 18. A solar clock used in a solar clock display panel structure, wherein the clock display panel includes a solar cell built in a clock and a solar clock display panel disposed on the front side of the solar cell. The timepiece display panel according to any one of claims 1 to 17, which is a display panel. 19. The timepiece display panel according to claim 18, wherein a light transmittance of the timepiece display panel that contributes to power generation is in a range of 10 to 60%. 20. The plastic is a transparent resin,
2. A treatment with one or more color diffusing agents selected from a light diffusing agent, a phosphorescent phosphor, and a coloring agent comprising a dye or a pigment.
20. The timepiece display panel according to any one of claims to 19.