JP2009186813A - Display plate and apparatuses provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display plate supplying light quantity sufficient for power generation, capable of making cross lines and a dark purple color of the solar cell invisible, having excellent decorativeness, providing a sense of metal similar to a metallic display plate, and clear colors having whiteness and brightness, and having an appearance quality with a sense of high quality, to improve the design variation of the display plate, and to achieve thinning of the display plate. <P>SOLUTION: The display plate is provided with a display plate base arranged on the viewing side. At least one surface of the display plate base includes a pattern surface obtained by applying a coating layer to the surface and then forming a rugged pattern on the coating layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display board including a timepiece dial, a clock parting board, an instrument dial, and the like, and more particularly to a display board having a solar cell on the lower surface side.

  A display panel provided with a solar cell (solar cell) is required to transmit light in order to transmit received light and cause a solar cell disposed on the lower surface side to generate a power generation function. For this reason, translucent materials such as plastic, ceramic and glass are used. In particular, plastics are very often used because they are inexpensive and easy to mold and process.

FIG. 21 is a plan view showing a general solar cell.
As shown in FIG. 21, a general solar cell is provided on four surfaces (A1, A2, A3, A4) divided into four equal parts, and is disposed on the lower surface of the display panel. And, the transmitted light that has passed through the display panel is uniformly incident on each of the four surfaces (A 1, A 2, A 3, A 4) so that the power generation efficiency is most enhanced. For this reason, the display board arrange | positioned at the upper surface side of this solar cell is a part corresponding to four surfaces (A1, A2, A3, A4) of a solar cell, ie, 12-6 o'clock line and 9-3 o'clock line. Therefore, it is necessary to design the four surfaces divided into four equal parts so as to transmit a uniform amount of light.

  However, the solar cell disposed on the lower surface side of the display panel shows a unique dark purple color, and the cross lines obtained by dividing into four equal parts are very conspicuous due to the difference in materials. For this reason, since it does not give an aesthetically pleasing feeling, various attempts have been made to display panels in order to soften or hide this dark purple color.

Hereinafter, a conventional example of a display panel provided with a solar cell will be described with reference to the drawings.
FIG. 22 is a partially enlarged sectional view showing the structure of a timepiece dial plate having a solar cell as a display plate in the prior art, and FIG. 23 is a component part of the display plate in the prior art, in which a plurality of layers are laminated. It is a schematic block diagram which shows a reflection type polarizing body.

  As shown in FIG. 22, a dial plate 100 for a solar timepiece according to the prior art includes a base material 101, a reflective polarizer 103 provided on the surface side of the base material 101 facing the solar cell 109, and the base material 101. And a diffusion layer 102 disposed between the reflective polarizer 103 and a structure in which time letters, decorative characters, marks, and the like are provided on the substrate 101.

  The base material 101 is made of a light-transmitting material such as plastic such as acrylic resin or polycarbonate resin, or glass, and has a flat plate shape with a thickness of about 300 to 600 μm. In order to prevent the self-color of the solar cell 109 from being seen through, a colored layer may be provided on the base material 101 by a coating method, a printing method, a wet plating method, a dry plating method, or the like. It is disclosed that the colored layer is preferably white.

  The diffusion layer 102 is made of a material containing a diffusing agent having a function of diffusing incident light. Examples of the diffusing agent that constitutes the diffusion layer 102 are granular / (powder), scale-like, needle-like, etc., and silica, glass, resin, etc. are used, and have adhesiveness and adhesiveness. What is comprised is disclosed.

The reflective polarizer 103 has a function of polarizing the incident light, transmits the first light that vibrates in a predetermined direction, and the second is perpendicular to the vibration direction of the first light. It has a function of reflecting the light.

  As shown in FIG. 23, the reflective polarizer 103 is a laminate in which a plurality of layers are laminated, and two different types of layers, that is, a polarizing film layer (A layer) 131 and a polarizing film layer (B Layer) 132 and a plurality of layers are alternately stacked.

  The A layer 131 of the reflective polarizer 103 is, for example, a stretched film of polyethylene naphthalate, and the B layer 132 is composed of a copolyester of naphthalenedicarboxylic acid and terephthalic acid. Is disclosed.

  Thus, the dial for solar timepiece 100 as a display plate in the prior art has a light-transmitting base material 101, a diffusion layer 102, and a reflective polarizer 103, so that the light transmittance is sufficiently high. However, it is disclosed that the self-color of the solar cell 109 can be prevented from being seen through and has a decorative property (see, for example, Patent Document 1).

International Publication No. WO2006 / 006390 (Pages 5-11, FIG. 13)

However, the display panel in the prior art cannot obtain the same metallic feeling as that of the metal display panel, and clear colors with whiteness and brightness, and it is difficult to obtain a display panel having a high-quality appearance. there were. In particular, the display panel in the prior art has a problem that the metal feeling peculiar to metal cannot be obtained and design variations are scarce.
Furthermore, the display panel in the prior art has a problem that it is discolored by ultraviolet rays or visible rays, and further, humidity is added, resulting in poor weather resistance.

  In view of the current situation, the present invention supplies a sufficient amount of light for power generation of a solar cell so that the crosshairs and dark purple of the solar cell are not visible, and provides a display panel with excellent decorativeness. The purpose is to do.

  In addition, the present invention provides a display panel that has a metallic appearance similar to that of a metal display panel, white and brightness, and has a high-quality appearance quality. It aims at realizing improvement and thinning.

  Furthermore, the present invention provides devices using the display plate as a display plate for devices such as a clock display plate, a desk calculator, an automobile, an instrument panel of an airplane, a mobile device such as a mobile phone. For the purpose.

The present invention has been invented in order to achieve the problems and objects in the prior art as described above.
A display board provided with a display board base provided on the viewing side,
At least one surface of the display panel substrate has a pattern surface on which a concavo-convex pattern is formed after applying a coating layer to the surface.

In addition, the manufacturing method of the display board of the present invention,
A method of manufacturing a display board provided with a display board base provided on the viewing side,
A coating layer forming step of forming a coating layer on at least one surface of the display panel substrate;
A pattern forming step for forming a pattern surface by applying a concavo-convex pattern from the coating layer to the surface of the display plate substrate on the surface on which the coating layer is formed;
It is characterized by including.

  In this way, when at least one surface of the display panel substrate has a pattern surface on which an uneven pattern is formed after applying a coating layer on the surface, for example, when used for a solar-powered wristwatch, It is possible to supply a sufficient amount of light for the power generation of the solar cell so that the crosshairs and dark purple color of the solar cell are not visible, and the design variation can be improved and the thickness can be reduced.

In addition, it is possible to achieve a high-quality display panel that has the same metallic feeling and whiteness as the metal display panel and is excellent in decorativeness.
Furthermore, since at least one surface of the display panel substrate is covered with a coating layer, it is not discolored by ultraviolet rays or visible light, and is excellent in weather resistance even when humidity is applied. In particular, when the coating layer is provided on the surface side (viewing side), the influence of ultraviolet rays can be prevented.

  In addition, when a coating layer is applied to the surface of the display panel substrate on which a pattern has been formed in advance, the coating layer makes the surface flat or the pattern shape blurs. As in the case of the invention, if the pattern surface is formed by forming a concavo-convex pattern after applying a coating layer on at least one surface of the display panel substrate, the pattern shape is not blurred and a clear pattern is obtained. It is done.

Further, the display panel of the present invention is characterized in that the pattern surface is formed on the entire surface of the display plate substrate or a part of the display plate substrate.
By comprising in this way, the same metal feeling and whiteness as a metal display board are obtained over the whole surface of a display board base | substrate, and it is excellent in decorating property and can implement | achieve a high-class display board.

  Further, by configuring in this way, it is possible to achieve a high-quality display panel that provides a metallic feeling and whiteness similar to those of a metal display panel on a part of the display panel substrate, and is excellent in decorativeness. it can.

  In the display panel of the present invention, the pattern surface has a pattern surface in which an uneven pattern is formed from the coating layer to the surface of the display plate substrate after the coating layer is applied to at least one surface of the display plate substrate. It is characterized by being.

  By configuring in this manner, since the uneven pattern is applied from the coating layer to the surface of the display board substrate, the pattern shape is not blurred, a clear pattern is obtained, and a three-dimensional pattern with depth is obtained. An uneven pattern can be expressed, and the design variation can be improved.

  Further, in the display board of the present invention, the pattern surface is a pattern surface on which a concavo-convex pattern is formed after a coating layer is applied to the surface of a display board base on which a pattern is previously formed on at least one surface. Features.

  With this configuration, a three-dimensional uneven pattern having a depth is expressed by a pattern formed in advance on the surface of the display panel base and a pattern formed after applying a coating layer on the surface of the display panel base. In addition, the number of types of patterns increases, and the design variation can be improved.

In the display board of the present invention, the surface of the pattern is formed from the same pattern as the pattern previously formed on the surface of the display board substrate or a pattern different from the pattern previously formed on the surface of the display board substrate. Features.
By configuring in this way, the same pattern, the pattern formed in advance on the surface of the display board substrate, and the pattern formed after applying the coating layer on the surface of the display board substrate overlap, and the pattern shape becomes blurred. In addition, a clearer pattern can be obtained, and a three-dimensional concavo-convex pattern with a depth can be expressed, thereby improving the design variation.

  Further, by configuring in this way, a pattern formed in advance on the surface of the display panel base and a pattern formed after applying a coating layer on the surface of the display panel base overlap, resulting in a three-dimensional unevenness with a depth. It is possible to express a pattern. In addition, a novel pattern is formed in a portion where different patterns overlap, and an improvement in design variation can be realized.

The display board of the present invention is characterized in that the pattern surface is formed of a part having the same pattern as the pattern previously formed on the surface of the display board substrate and a part having a different pattern.
With this configuration, the same pattern, the pattern formed in advance on the surface of the display board base, and the pattern formed after applying the coating layer on the surface of the display board base overlap, and the pattern shape is blurred. In addition, a clearer pattern can be obtained and a three-dimensional uneven pattern with depth can be expressed.

  In addition, in a portion where different patterns are overlapped, a pattern formed in advance on the surface of the display plate base and a pattern formed after applying a coating layer on the surface of the display plate base overlap, resulting in a three-dimensional pattern with depth. An uneven pattern can be expressed, and a novel pattern can be formed at a portion where different patterns are overlapped, thereby improving the design variation.

In the display panel of the present invention, the coating layer is formed of one or more coating layers selected from a metal coating layer, a metal oxide coating layer, a metal nitride coating layer, and a resin coating layer. And
In the display panel of the present invention, the metal coating layer is one or more metals selected from gold, silver, copper, aluminum, magnesium, zinc, and titanium, or two or more metals selected from these metals. It is formed from the alloy of these.
The display plate of the present invention is characterized in that the metal oxide coating layer is at least one metal oxide selected from silicon oxide, zirconium oxide, niobium oxide titanium oxide, iron oxide, tin oxide, silicon oxide, and aluminum oxide. It is formed from.
The display panel of the present invention is characterized in that the metal nitride coating layer is formed of at least one metal nitride selected from silicon nitride, titanium nitride, and zirconium nitride.

Further, in the display board of the present invention, the resin coating layer is made of polycarbonate resin, acrylic resin, polyacetal resin, ABS resin, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, alkyd resin, vinyl chloride resin, polyurethane resin, It is characterized by being formed from at least one resin selected from polyester resins and fluorine resins.
The display panel of the present invention is characterized in that the resin coating layer is formed by printing, spin coating, painting, or a laminated resin film.

The display panel of the present invention is characterized in that a transparent substrate is provided on at least one surface side of the display panel substrate.
In addition, the display panel of the present invention is characterized by having an uneven portion on at least one surface side of the transmissive substrate.
Moreover, the display panel of the present invention is characterized in that the uneven portion has a prism shape.

The display board of the present invention is
The display panel substrate has at least one reflective polarizing plate;
It has an uneven pattern on at least one surface of the reflective polarizing plate.
In this way, by forming an uneven pattern on at least one surface of the reflective polarizing plate, for example, when used in a solar-powered wristwatch, etc., a sufficient amount of light is supplied to generate solar cells. Cell crosshairs and dark purple can be made invisible. In addition, the design variation can be improved and the thickness can be reduced.

In addition, it is possible to achieve a high-quality display panel that has the same metallic feeling and whiteness as the metal display panel and is excellent in decorativeness.
The display board of the present invention is
The display panel substrate has a plurality of reflective polarizing plates;
Among the plurality of reflective polarizing plates, at least one surface of the reflective polarizing plate disposed on the most visible side has an uneven pattern.

By providing a plurality of reflective polarizing plates in this way, the amount of light supplied to the solar cell can be easily adjusted. As a result, it is possible to make adjustments so that the metal color and white color to be formed on the dial plate appear more strongly.
Further, the display panel of the present invention is characterized in that the plurality of reflective polarizing plates are arranged such that directions of easy light transmission axes are different from each other.

  Thus, the light quantity supplied to a solar cell can be easily adjusted by providing a some reflective polarizing plate and arrange | positioning so that the direction of each light transmission easy axis may become a mutually different direction. As a result, it is possible to make adjustments until the metal color and white tone to be formed on the dial plate appear stronger.

The display panel of the present invention is characterized in that the reflective polarizing plate has a light-transmitting colored layer, a diffusion layer, a UV reflection layer, or a UV absorption layer as a coating layer on at least one surface. To do.
As described above, the reflective polarizing plate is configured to have a light-transmitting colored layer, a diffusing layer, a UV reflecting layer, or a UV absorbing layer as a coating layer on at least one surface. By providing a light-transmitting colored layer, a diffusion layer, a UV reflection layer, or a UV absorption layer on the plate, discoloration can be prevented, whiteness can be increased, and a display panel with a higher quality can be obtained.

Moreover, the display board of the present invention is characterized in that the transparent substrate is disposed on the side opposite to the viewing side.
By comprising in this way, a three-dimensional expression with a depth can be performed with the transparent layer of a transparent substrate, and the uneven | corrugated pattern of a reflective polarizing plate.

  As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. Further, since the reflected light from the solar cell is reduced, the dark purple color and the cross hair of the solar cell are completely erased and are not visually recognized.

Moreover, the display board of the present invention is characterized in that the transparent substrate is disposed on the viewing side.
With such a configuration, the uneven pattern of the reflective polarizing plate appears as a three-dimensional expression having a depth by being visually recognized through the transparent layer of the transmissive substrate.
As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. Further, since the reflected light from the solar cell is reduced, the dark purple color and the cross hair of the solar cell are completely erased and are not visually recognized.

In the display panel of the present invention, the transparent substrate has a light-transmitting colored layer, a diffusion layer, a UV reflection layer, or a UV absorption layer on at least one surface.
As described above, the transparent substrate has a light-transmitting colored layer, a diffusion layer, a UV reflecting layer, or a UV absorbing layer on at least one surface, whereby the light-transmitting colored layer is formed on the transparent substrate. By providing a diffusion layer, a UV reflection layer, or a UV absorption layer, discoloration can be prevented, whiteness can be increased, and a display panel with a higher quality can be obtained. In addition, by providing a light-transmitting colored layer on a transparent substrate, a bright and bright display panel can be obtained.

In the display panel of the present invention, the transparent substrate contains at least one of a colorant, a diffusing agent, a UV reflector, or a UV absorber.
Thus, the transmissive substrate contains at least one of a colorant, a diffusing agent, a UV reflector, or a UV absorber, so that the colorant, diffusing agent, and UV reflector contained in the transmissive substrate. Or, by the action of UV absorbers, design variations such as coloring of transparent substrates, improvement of whiteness, prevention of discoloration, improvement of brightness, etc. can be achieved, and by combining with the above pattern, crosshairs of solar cells And dark purple can be made invisible, and improvement in design variation can be realized.

  In the display panel of the present invention, the transparent substrate is composed of at least one transparent substrate selected from a transparent resin material plate, a translucent color material plate, a retardation plate, and a metal plate having a plurality of transmission holes. It is characterized by.

  Due to the construction of the transparent substrate made of such a member, a display having a clear color with a metallic color or brightness, in combination with the reflective polarizing plate having a concavo-convex pattern, in combination with the above pattern. A board can be obtained, and the crosshairs and dark purple color of the solar cell can be made invisible, and improvement in design variation can be realized.

Moreover, the display board of this invention is equipped with a solar power generation device in the lower surface side of the display board in any one of said.
The devices of the present invention are characterized in that an antenna is provided on the lower surface side of the display board.
Moreover, the devices of the present invention are characterized in that the devices are watches.

With this configuration, for example, when used as a display board for devices such as a clock display board, a desk calculator, an automobile, an instrument panel of an airplane, a mobile device such as a mobile phone, etc. When used in a wristwatch or the like, it is possible to supply a sufficient amount of light for power generation of the solar cell so that the crosshairs and dark purple of the solar cell are not visible. In addition, it is possible to improve the design variation and reduce the thickness, such as enabling the expression of a three-dimensional uneven pattern with depth.
In addition, it is possible to provide a device having a high-quality display panel that has a metallic feeling and whiteness similar to those of a metal display panel and is excellent in decorativeness.

According to the present invention, at least one surface of the display panel base body has a pattern surface on which a concavo-convex pattern is formed after applying a coating layer on the surface, and thus, for example, used for a solar-driven wristwatch or the like. In this case, it is possible to supply a sufficient amount of light for power generation of the solar cell so that the crosshairs and dark purple color of the solar cell are not visible, and the design variation can be improved and the thickness can be reduced. .

In addition, it is possible to achieve a high-quality display panel that has the same metallic feeling and whiteness as the metal display panel and is excellent in decorativeness.
Furthermore, since at least one surface of the display panel substrate is covered with a coating layer, it is not discolored by ultraviolet rays or visible rays, and has excellent light resistance.

  In addition, when a coating layer is applied to the surface of the display panel substrate on which a pattern has been formed in advance, the coating layer makes the surface flat or the pattern shape blurs. As in the case of the invention, if the pattern surface is formed by forming a concavo-convex pattern after applying a coating layer on at least one surface of the display panel substrate, the pattern shape is not blurred and a clear pattern is obtained. It is done.

  In addition, according to the present invention, since the concavo-convex pattern is applied from the coating layer to the surface of the display panel substrate, the pattern shape is not blurred, a clear pattern is obtained, and a three-dimensional pattern with depth is obtained. An uneven pattern can be expressed, and the design variation can be improved.

  Furthermore, according to the present invention, a three-dimensional concavo-convex pattern having a depth is expressed by a pattern formed in advance on the surface of the display panel base and a pattern formed after applying a coating layer on the surface of the display panel base. In addition, the number of types of patterns increases, and the design variation can be improved.

  In addition, according to the present invention, by forming a concavo-convex pattern on the surface of the reflective polarizing plate, for example, when used for a solar-powered wristwatch, etc., a sufficient amount of light is supplied for power generation of the solar cell, It is possible to make the crosshairs and dark purple of the solar cell invisible and improve the design variation and make it thinner.

In addition, it is possible to realize a high-quality display panel that has a metallic feeling and whiteness similar to those of the metal display panel and is excellent in decorativeness.
Furthermore, by providing a diffusion layer on the reflective polarizing plate, whiteness can be increased, and a display panel with a higher quality can be obtained.

In addition, by providing a light-transmitting colored layer on the reflective polarizing plate, a bright and clear display panel can be obtained.
Moreover, the light quantity supplied to a solar cell can be easily adjusted by providing a some reflective polarizing plate and arrange | positioning so that the direction of each light transmission easy axis may become a mutually different direction. As a result, it is possible to adjust so that the metal color and white color tone formed on the dial plate appear more strongly.

  Further, according to the present invention, when the display board of the present invention is used as a display board for equipment such as a clock display board, a desk calculator, an automobile, an instrument panel of an airplane, a mobile phone, etc. In particular, when used in a solar-powered wristwatch or the like, it is possible to supply a sufficient amount of light for power generation of the solar cell so that the solar cell crosshairs and dark purple are not visible.

In addition, it is possible to improve the design variation and reduce the thickness, such as enabling the expression of a three-dimensional uneven pattern with depth.
In addition, it is possible to provide a device having a high-quality display panel that has a metallic feeling and whiteness similar to those of a metal display panel and is excellent in decorativeness.

Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.
The display boards of Examples 1 to 12 below include a solar cell and a reflective polarizing plate provided on the viewing side of the solar cell, and an uneven pattern is formed on the surface of the reflective polarizing plate. As a result, a sufficient amount of light for power generation of the solar cell is supplied so that the crosshairs and dark purple of the solar cell are not visible, and a thin display panel with excellent decoration is realized. In addition, a high-quality display panel having a metallic feeling similar to that of a metal display panel, a clear color with whiteness and brightness is realized.
In addition, in each following Example, the same reference number is attached | subjected about the same structural member, The detailed description is abbreviate | omitted.

Example 1
1A and 1B show a display panel of Example 1. FIG. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along line AA of FIG. FIG. 2 is a perspective view showing a reflective polarizing plate, FIG. 3 is an optical path diagram of the display plate, and FIG. 4 is a schematic cross-sectional view showing a manufacturing process of the display plate.

As shown in FIG. 1, the display panel of Example 1 is formed by forming a concavo-convex pattern on the surface of the reflective polarizing plate on the viewing side and providing a light-transmitting colored layer on the surface.
That is, the code | symbol 10 has shown the display board 10 of this invention as a whole. The display panel 10 of the first embodiment includes a solar cell 12 and a reflective polarizing plate 14 that constitutes a display panel substrate provided on the viewing side of the solar cell 12.

  A circle-shaped uneven pattern 16 is formed on the surface of the reflective polarizing plate 14 on the viewing side. The surface of the uneven pattern 16 has the same circular uneven pattern as the pattern 16. A light-transmitting colored layer 20 that forms a coating layer having a pattern 18 is provided. As a result, a pattern surface in which a circle-shaped uneven pattern 22 is formed from the light-transmitting colored layer 20 to the surface of the reflective polarizing plate 14 is formed.

Further, a time character 24, a mark, and the like are further attached to the surface of the light-transmitting colored layer 20 on the viewing side.
In addition, the reflective polarizing plate 14 and the solar cell 12 are such that the outer peripheral portion of each surface is an adhesive or an adhesive having a light diffusing property (for example, a double-sided tape containing a substrate containing a light diffusing agent) It is fixed by a fixing member 26 such as an agent.
Note that the reflective polarizing plate 14 and the solar cell 12 can be simply stacked and held by a watch inner frame or the like without using the fixing member 26 (the same applies to the following embodiments). .

  Of course, the whole surface between the reflective polarizing plate 14 and the solar cell 12 and between these members and each member of the transparent substrate described later may be fixed by the fixing member (about this). This also applies to the following examples).

  In the embodiment shown in FIG. 1, although not shown in the drawing, the shaft hole through which the needle shaft for driving the minute hand and the hour hand is inserted is shown only in the reflective polarizing plate 14, but the solar cell is shown. 12 is formed with a shaft hole through which the needle shaft of the movement arranged below is inserted, but in the drawing, the shaft hole of the solar cell 12 is omitted for convenience (the following examples) The same applies to the reflective polarizing plate, the transmissive substrate, and the axial hole of the solar cell).

The reflective polarizing plate base material as the material of the reflective polarizing plate 14 is preferably a laminate in which two types of films having different polarizabilities are alternately laminated. In this example, a product name manufactured by Sumitomo 3M Co., Ltd. “DBEF” was used.
As shown in FIG. 2, the reflective polarizing plate substrate 11 made of “DBEF” has a light reflection axis N and a light transmission easy axis M, and a straight line having a vibration surface parallel to the light reflection axis N. The light of the polarization component is reflected, and the light of the linear polarization component having a vibration plane parallel to the light transmission easy axis M has a characteristic of transmitting. Further, it has a characteristic of transmitting about 50% of light and reflecting about 50% of light.

As for the value of the thickness t of the reflective polarizing plate substrate 11, various types having a thickness of about 130 to 400 μm are commercially available and can be selected as necessary.
In addition, if the surface of the reflective polarizing plate substrate 11 has an uneven shape such as embossing, interference fringes are prevented when the solar cell 12 and the reflective polarizing plate substrate 11 are disposed. Is also possible.

In this example, a reflective polarizing plate substrate 11 having a thickness t of 160 μm was used.
The manufacturing method of the display panel 10 of this embodiment may be manufactured as shown in FIG.
That is, first, as shown in FIG. 4A, a reflective polarizing plate 14 punched into a display plate shape is prepared, and as shown in FIG. 4B, the viewing side of the reflective polarizing plate 14 is prepared. A light-transmitting colored layer 20 is formed on the surface 14a by, for example, printing.

  Next, as shown in FIG. 4 (c), a thermal transfer pressing die (die) 30 having a circle-shaped uneven transfer pattern 28 on the surface is prepared and indicated by the arrow in FIG. 4 (c). As described above, the light-transmitting colored layer 20 formed on the surface 14a on the viewing side of the reflective polarizing plate 14 is pressed under heating (see FIG. 4D).

Then, as indicated by the arrow in FIG. 4E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the viewing-side surface 14a of the reflective polarizing plate 14. Move to.
Thereby, as shown in FIG. 1 and FIG. 4E, the circular uneven pattern 16 on the surface on the viewing side of the reflective polarizing plate 14 and the light transmittance of the surface of the uneven pattern 16. In the colored layer 20, the same uneven pattern 18 having a circle shape as the pattern 16 is integrally formed.

As a result, a pattern surface in which a circle-shaped uneven pattern 22 is formed from the light-transmitting colored layer 20 to the surface of the reflective polarizing plate 14 is formed.
In the above-described embodiment, the reflective polarizing plate 14 punched in advance in the shape of the display plate is used. However, for example, when a large number of display plates 10 are manufactured at a time, the reflective type having a size corresponding to the large number is used. After performing the above-described manufacturing process using the polarizing plate 14, finally, it may be manufactured by punching into a number of display plate shapes (the same applies to the following examples).

In this case, the circular concavo-convex pattern 22 formed on the surface of the display panel 10 is formed so that the depth and width of the concave portion, the width of the convex portion, and the like are visually observable. The pattern is clearly visible from the side.
The value of the width b of the concavo-convex pattern 22 by this thermal transfer is not particularly limited, but is preferably set in the range of 40 to 60 μm. The value of the pattern depth d can also be set as appropriate, but it is preferably set in the range of 10 to 20 μm.

Further, the circle-shaped uneven pattern 22 also has an action of refracting and scattering reflected light from below. As a result, the circle-shaped pattern 22 and the metallic feeling are brightly and clearly visually recognized by the reflected light of the reflective polarizing plate 14. In addition, the crosshairs and dark purple of the solar cell are completely erased and are no longer visible.

Further, the light-transmitting colored layer 20 is formed by a printing method by mixing copper metal powder with a transparent urethane resin to form an ink. And it finishes so that the same metallic feeling as a metal display board may appear by the color of the reflected light of the reflective polarizing plate 14 and the color of the light transmissive colored layer 20 as a whole.
In this case, as described above, the light transmissive colored layer 20 is mixed with a transparent urethane resin to form an ink, and instead of forming by a printing method, various light transmissive colored layers 20 are formed. It can be used and is not limited at all.

For example, a white pigment can be mixed with a resin and formed by a printing method. The reason why the white pigment is used is to give a white feeling to the display board. When the film thickness is increased, whiteness is obtained but the transmittance is deteriorated.
Therefore, the film thickness is reduced to about 7 to 10 μm, and the transmittance is reduced by about 10%. If you want to produce other colors, use other pigments.

  In addition, for example, chemical vapor deposition (CVD) such as thermal CVD, plasma CVD, and laser CVD, dry plating treatment such as vacuum deposition, sputtering, or ion plating, thermal spraying, and further, spin coating, dipping, brush coating, A very thin metal film may be formed by wet plating methods such as spray coating, electrostatic coating, electrodeposition coating, etc., electrolytic plating, immersion plating, electroless plating, etc. Is preferred.

In this case, the light-transmitting colored layer 20 forming the coating layer can be formed from one or more coating layers selected from a metal coating layer, a metal oxide coating layer, a metal nitride coating layer, and a resin coating layer. .
Although it does not specifically limit as a metal coating layer, For example, 1 or more types of metals selected from gold | metal | money, silver, copper, aluminum, magnesium, zinc, titanium, or 2 or more types selected from these metals It can be formed from a metal alloy.
Furthermore, the metal oxide coating layer is not particularly limited, but for example, at least one selected from silicon oxide, zirconium oxide, niobium oxide titanium oxide, iron oxide, tin oxide, silicon oxide, and aluminum oxide. It can form from the metal oxide of this.
The metal nitride coating layer is not particularly limited, and can be formed from at least one metal nitride selected from, for example, silicon nitride, titanium nitride, and zirconium nitride.

The resin coating layer is not particularly limited. For example, polycarbonate resin, acrylic resin, polyacetal resin, ABS resin, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, alkyd resin, vinyl chloride resin. , A polyurethane resin, a polyester resin, and a fluorine resin.
In this case, the method for forming the resin coating layer is not particularly limited, and for example, the resin coating layer can be formed by printing, spin coating, or painting.
Moreover, as a resin coating layer, it can also form with the laminated resin film which consists of resin used for said resin coating layer.

A similar white feeling can be obtained by providing a diffusion layer instead of the light-transmitting colored layer 20. The diffusing layer is a mixture of a diffusing agent having a function of diffusing light incident on an adhesive or an adhesive, and the diffusing agent is made of silica, glass, resin, such as granular, powdery, scale-like, or needle-like Etc. can be used.
Further, even if a UV reflecting layer and a UV absorbing layer are provided instead of the light-transmitting colored layer 20, the same effect of preventing whiteness and discoloration can be obtained.

In this case, the UV reflective layer is not particularly limited, but for example, a single layer of silicon oxide, titanium oxide, or silicon nitride, or a multilayer UV reflective layer made of a combination thereof can be used.
Further, the UV absorbing layer is not particularly limited. However, when a laminate material is used as the UV absorbing layer, for example, “Rug Protect (product name)” manufactured by Lintec Corporation can be used. . Furthermore, when ink is used as the UV absorbing layer, “SG429B overcoat clear (product name)” manufactured by Seiko Advance Co., Ltd. can be used.

  In the present invention, the coating layer such as the light-transmitting colored layer 20 may be a single layer or a plurality of layers, and when a plurality of layers are stacked, the same type of coating layer is stacked. However, it is also possible to select and laminate different types of coating layers (the same applies to the following examples).

  Furthermore, although the uneven pattern 22 of this embodiment is formed in a circle shape, other pattern patterns with unevenness may be formed. For example, various patterns such as stripes, swirls, satin patterns, lattice patterns, substantially pyramid patterns, geometric patterns, knitted patterns, stone-tone patterns, grain patterns, ripple patterns, and Asahi eyes may be selected. These patterns can be appropriately combined, and can be selected according to the desired design (the same applies to the following embodiments).

The circle-shaped pattern 22 is formed by thermal transfer processing. In addition to this, various processing methods such as thermal transfer processing, press processing, and sand blast processing can be used depending on the pattern to be selected. Moreover, the cross-sectional shape of the uneven pattern can be selected as appropriate, such as a V shape, a U shape, or a square shape.
Further, the uneven pattern 22 can be provided not only on the entire surface of the display panel 10 but also partially.

  Further, in this embodiment, the uneven pattern 22 is formed only on the surface on the viewing side of the display board 10, but it can also be formed on the surface on the solar cell 12 side, and the display board 10 can be viewed. It is also possible to form both the surface on the side and the surface on the solar cell 12 side.

Next, the operation of the display panel 10 of Example 1 will be described with reference to FIG.
The light P <b> 1 incident on the display panel 10 is a circle-shaped uneven pattern 22, that is, a circle-shaped uneven pattern 18 of the light-transmitting colored layer 20, and a circle-shaped uneven pattern on the surface of the reflective polarizing plate 14. The light enters the reflective polarizing plate 14 through the pattern 16.

Of the light incident on the reflective polarizing plate 14, linearly polarized light n1 having a vibration plane parallel to the light reflection axis of the reflective polarizing plate 14 is reflected from the reflective polarizing plate 14 and reflected by the reflected light P2. Become radiated outside.
The linearly polarized light component m1 having a vibration plane parallel to the light transmission easy axis of the reflective polarizing plate 14 passes through the reflective polarizing plate 14 and enters the solar cell 12.

The light incident on the solar cell 12 is divided into light that is absorbed therein and light that is reflected therefrom. The light reflected from the solar cell 12 is a linearly polarized light component m2 having a vibration plane parallel to the light transmission easy axis of the reflective polarizing plate 14, the reflective polarizing plate 14, and the light transmitting colored layer 20. Is transmitted to the outside as reflected light P3.
On the other hand, the linearly polarized light component n2 having a vibration plane parallel to the light reflection axis of the reflective polarizing plate 14 is reflected from the reflective polarizing plate 14 and returns to the solar cell 12 side as reflected light P4. .
As a result, the amount of light incident on the reflective polarizing plate 14 and reflected from the solar cell 12 and returning to the reflective polarizing plate 14 becomes very small.

  Furthermore, since the concave and convex patterns 22 made of the patterns 16 and 18 are formed on the surfaces of the reflective polarizing plate 14 and the light transmissive colored layer 20, the reflected light P2 on the surface of the reflective polarizing plate 14 is formed. In addition, the reflected light P3 reflected by the solar cell 12 and transmitted through the reflective polarizing plate 14 and the light-transmitting colored layer 20 is not reflected in a uniform direction, but is reflected and scattered in all directions. Become radiated outside.

As described above, the reflected light from the solar cell 12 is reduced, and further, scattering is generated by the action of the uneven pattern 16, so that the crosshairs and dark purple of the solar cell 12 are completely erased and are completely recognized. Disappear.
As described above, according to the display board of this embodiment, the cross lines and dark purple of the solar cell 12 are completely erased, and the same metallic feeling as that of the metal display board is obtained and a clear pattern is visually recognized. In addition, a display panel having excellent decorativeness can be obtained. Furthermore, in this example, a thin and high-quality display panel could be obtained by setting the thickness of the reflective polarizing plate 14 to 160 μm.

  That is, on the display panel of Example 1, the circular uneven pattern 22 can be clearly seen from the viewing side. Further, the circle-shaped uneven pattern 22 also has an action of refracting and scattering reflected light from below, and the circle-shaped uneven pattern 22 and the metal display plate by the strong reflected light of the reflective polarizing plate 14. A metallic feeling similar to is visible brightly and clearly. As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. Further, the color of the solar cell 12 is completely erased and is not visually recognized.

  Thus, by providing the light-transmitting colored layer 20 as the coating layer on the surface of the reflective polarizing plate 14 as the display substrate, and having the pattern surface on which the uneven pattern 22 is formed, for example, solar driving When used in a wristwatch, it is possible to supply a sufficient amount of light for solar cell power generation so that the crosshairs and dark purple color of the solar cell are not visible, and the design variation is improved and thinner. Can be realized.

In addition, it is possible to achieve a high-quality display panel that has the same metallic feeling and whiteness as the metal display panel and is excellent in decorativeness.
Furthermore, since at least one surface of the display substrate is coated with the light-transmitting colored layer 20 that is a coating layer, it is not discolored by ultraviolet rays or visible rays, and even when humidity is applied. Excellent in weather resistance.

  In addition, when the light-transmitting colored layer 20 that is the coating layer is applied to the surface of the reflective polarizing plate 14 that is a display plate substrate on which a pattern has been formed in advance, the surface is formed by the light-transmitting colored layer 20 that is the coating layer. As a result, the surface of the pattern is a coating layer on the surface of the reflective polarizing plate 14 that is a display plate substrate, as in the present invention. If the uneven pattern 22 is formed after applying the light-transmitting colored layer 20, the pattern shape is not blurred and a clear pattern is obtained.

(Example 2)
FIG. 5 is a cross-sectional view of a display panel according to Embodiment 2 of the present invention.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the first embodiment, and the same constituent members are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.

The display board 10 of this embodiment is the same as the display board 10 of the first embodiment in that it includes a solar cell 12 and a reflective polarizing plate 14 provided on the viewing side of the solar cell 12. 14 is further provided with a transparent substrate 46 on the viewing side.
Further, an uneven pattern 48 which is a prism reflecting surface is formed on the surface of the transmissive substrate 46 facing the solar cell 12. The transparent substrate 46 is formed by injection molding. At this time, the uneven pattern 48 which is the prism reflecting surface is also transferred from the mold and simultaneously formed.
The uneven pattern 48 which is the prism reflecting surface has a triangular prism shape, and is formed in a circle pattern or a spiral pattern.

The triangular angle is formed in the range of 75 to 100 degrees for both the concave and convex portions. Further, the height h is set to 15 to 100 μm, and the pitch p is set to about 150 μm.
It is preferable that the height and the pitch be formed so that the mold can be easily processed and is visible.
The light reflected by the concave / convex pattern 48, which is the prism reflection surface of the transparent substrate 46, or the light reflected from the solar cell 12 and transmitted through the concave / convex pattern 48, which is the prism reflection surface, is prismatic. Since the reflecting surface is formed in a circle shape or a spiral shape, it does not reflect in a uniform direction, but becomes reflected light scattered and scattered in all directions and transmitted through the reflective polarizing plate 14. Radiated outside.

  By the reflected light from the concavo-convex pattern 48 which is the prism reflecting surface of the transmissive substrate 46 and the reflective polarizing plate 14, the metallic feeling similar to that of the lattice-shaped concavo-convex pattern 16 and the metal display plate becomes bright and clear. Visible.

As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. In addition, the dark purple color and the crosshairs of the solar cell 12 are completely erased due to the fact that the reflected light from the solar cell 12 is reduced and scattering is caused by the action of the uneven pattern 48 which is the prism reflecting surface. Will not be visible.
In this embodiment, an uneven pattern 48 which is a prism reflecting surface is formed on the surface of the transmissive substrate 46 facing the solar cell 12. It may be provided on at least one side of the surface facing the cell 12, and is not particularly limited (the same applies to the following examples).
Further, the transmissive substrate 46 is not particularly limited, but any substrate can be used as long as it has a transmissive property that transmits a desired wavelength such as light and radio waves (see the following implementation). The same applies to the examples).

(Example 3)
FIG. 6 is a process schematic diagram showing a manufacturing process of another embodiment of the display panel of the present invention.
In Example 1 described above, the light-transmitting colored layer 20 as the coating layer was applied to the surface of the reflective polarizing plate 14 as the display substrate, and then the uneven pattern 22 was integrally formed. It is also possible to form the display panel 10 by a process as shown in FIG.

  That is, first, as shown in FIG. 6A, a pattern 32 is partially formed in advance on the surface of the reflective polarizing plate 14 (in this embodiment, on the outer peripheral portion of the display panel 10). A reflective polarizing plate 14 punched into a plate shape is prepared.

  Then, as shown in FIG. 6B, a light transmissive colored layer 20 is formed on the surface 14a on the viewing side of the reflective polarizing plate 14 by, for example, printing.

Next, as shown in FIG. 6 (c), an uneven transfer pattern different from the above pattern 32 at a location different from the above pattern 32 on the surface (in the central portion of the display board 10 in this embodiment). A light-transmitting colored layer formed on the surface 14a on the viewing side of the reflective polarizing plate 14 as shown by the arrow in FIG. 20 is pressed under heating (see FIG. 6D).

  Then, as indicated by the arrow in FIG. 6E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the surface 14a on the viewing side of the reflective polarizing plate 14. Move to.

  As a result, as shown in FIG. 6E, in the uneven pattern 16 on the viewing side of the reflective polarizing plate 14 and the light-transmitting colored layer 20 on the surface of the uneven pattern 16, the pattern 16 In this embodiment, the concave / convex pattern 18 having the same shape as is integrally formed on the center portion of the display panel 10.

As a result, a pattern surface in which a concavo-convex pattern 22 is formed in the central portion of the display panel 10 is formed from the light-transmitting colored layer 20 to the surface of the reflective polarizing plate 14.
Moreover, in this embodiment, no pattern is formed on the surface of the light-transmitting colored layer 20 on the outer peripheral portion of the display board 10, and a pattern 32 different from the uneven pattern 22 is formed on the display board 10. Formed on the outer periphery.

  With this configuration, the pattern 32 formed in advance on the surface of the reflective polarizing plate 14 that is the display plate substrate and the light-transmitting colored layer 20 that is the coating layer are applied to the surface of the reflective polarizing plate 14. In addition, the pattern 22 formed after this enables expression of a three-dimensional concavo-convex pattern having a depth, and increases the types of patterns, thereby realizing improvement in design variation.

  In this case, in this embodiment, a pattern 32 is partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and a pattern 22 different from this pattern 32 is formed in the central portion of the display panel 10. However, the shape, arrangement position, pattern type, and the like of these patterns 22 and 32 can be appropriately selected according to the design.

(Example 4)

FIG. 7 is a process schematic diagram showing a manufacturing process of another embodiment of the display panel of the present invention.
In Example 3 described above, the pattern 32 was partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and the pattern 22 different from the pattern 32 was formed on the central portion of the display panel 10. In this example, the pattern 32 was formed in advance on the entire surface of the reflective polarizing plate 14, and the same pattern 22 as this pattern 32 was formed on the entire surface of the display panel 10.

That is, first, as shown in FIG. 7A, a reflection type polarizing plate 14 is prepared by previously forming a pattern 32 on the entire surface of the reflection type polarizing plate 14 and punching it into a display plate shape.
Then, as shown in FIG. 7B, a light transmissive colored layer 20 is formed on the surface 14a on the viewing side of the reflective polarizing plate 14 by, for example, printing.

  Next, as shown in FIG. 7 (c), a thermal transfer pressing die (mold) 30 having the same uneven transfer pattern 28 as the pattern 32 on the entire surface is prepared, and FIG. 7 (c) is prepared. As indicated by the arrow, the light-transmitting colored layer 20 formed on the surface 14a on the viewing side of the reflective polarizing plate 14 is pressed under heating (see FIG. 7D).

Then, as indicated by the arrow in FIG. 7E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the viewing-side surface 14a of the reflective polarizing plate 14. Move to.
Thereby, as shown in FIG. 7E, the pattern 32 on the entire surface of the reflective polarizing plate 14 and the same shape as the pattern 32 in the light-transmitting colored layer 20 on the surface of the uneven pattern 32 are formed. The uneven pattern 18 is integrally formed.

As a result, a pattern surface is formed in which the concavo-convex pattern 22 is formed on the entire surface of the display panel 10 from the light-transmitting colored layer 20 to the surface of the reflective polarizing plate 14.
With this configuration, the pattern 32 formed in advance on the surface of the reflective polarizing plate 14 that is the display plate substrate and the light-transmitting colored layer 20 that is the coating layer are applied to the surface of the reflective polarizing plate 14. Then, the overlapping pattern 22 is formed by the pattern 18 formed after that.

  By comprising in this way, the pattern 32 previously formed in the surface of the reflective polarizing plate 14 which is a display board base | substrate which is the same pattern, and the light transmissive colored layer which is a coating layer on the surface of the reflective polarizing plate 14 The pattern 22 (18) formed after applying 20 is overlapped, the pattern shape is not blurred, a clearer pattern can be obtained, and a three-dimensional concavo-convex pattern with depth can be expressed. Variations can be improved.

(Example 5)
FIG. 8 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention.
In Example 3 described above, the pattern 32 was partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and the pattern 22 different from the pattern 32 was formed on the central portion of the display panel 10. In this example, a pattern 32 was previously formed on the entire surface of the reflective polarizing plate 14, and a pattern 22 different from the pattern 32 was formed on the entire surface of the display panel 10.

That is, first, as shown in FIG. 8A, a reflection type polarizing plate 14 is prepared by previously forming a pattern 32 on the entire surface of the reflection type polarizing plate 14 and punching it into a display plate shape.
And as shown in FIG.8 (b), the light transmissive colored layer 20 is formed in the surface 14a at the side of visual recognition of this reflective polarizing plate 14 by printing etc., for example.

  Next, as shown in FIG. 8C, a thermal transfer pressing die (die) 30 having an uneven transfer pattern 28 different from the pattern 32 on the entire surface is prepared, and FIG. As indicated by the arrow, the light-transmitting colored layer 20 formed on the surface 14a on the viewing side of the reflective polarizing plate 14 is pressed under heating (see FIG. 8D).

Then, as indicated by the arrow in FIG. 8E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the viewing-side surface 14a of the reflective polarizing plate 14. Move to.
Thus, as shown in FIG. 8E, the pattern 32 on the entire surface of the reflective polarizing plate 14 and the light-transmitting colored layer 20 on the surface of the uneven pattern 32 have a shape different from the pattern 32. The uneven pattern 22 is integrally formed.

  Thereby, in the light-transmitting colored layer 20, an uneven pattern 22 having a shape different from the pattern 32 is formed. On the other hand, on the surface of the reflective polarizing plate 14 therebelow, a previously formed pattern 32 and a pattern 34 formed by a transfer pattern 28 of a thermal transfer pressing die (mold) 30 different from this overlap each other, and a new pattern 36 is obtained. Is formed.

By comprising in this way, after giving the pattern 32 previously formed in the surface of the reflective polarizing plate 14 which is a display board base | substrate, and the transparent colored layer 20 which is a coating layer on the surface of the reflective polarizing plate 14 A pattern that overlaps with the formed pattern 22 is formed, and a three-dimensional uneven pattern having a depth can be expressed. In addition, a novel pattern 36 is formed in a portion where different patterns 32 and 34 overlap. Thus, improvement of the design variation can be realized.

(Example 6)
FIG. 9 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention.
In Example 3 described above, the pattern 32 was partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and the pattern 22 different from the pattern 32 was formed on the central portion of the display panel 10. In this example, a pattern 32 was partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and a pattern 22 different from this pattern 32 was formed on the entire surface of the display panel 10.

That is, first, as shown in FIG. 9 (a), the reflection type polarizing plate 14 in which a pattern 32 is partially formed on the outer peripheral portion of the surface of the reflection type polarizing plate 14 and punched into the shape of the display plate in advance. prepare.
And as shown in FIG.9 (b), the light transmissive colored layer 20 is formed in the surface 14a at the side of visual recognition of this reflective polarizing plate 14 by printing etc., for example.

Next, as shown in FIG. 9 (c), a thermal transfer pressing die (die) 30 having an uneven transfer pattern 28 different from the pattern 32 on the entire surface is prepared. As indicated by the arrow, the light-transmitting colored layer 20 formed on the surface 14a on the viewing side of the reflective polarizing plate 14 is pressed under heating (see FIG. 9D).
Then, as indicated by the arrow in FIG. 9E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the viewing-side surface 14a of the reflective polarizing plate 14. Move to.

Accordingly, as shown in FIG. 9E, the pattern 32 partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 and the light transmitting colored layer 20 have a shape different from the pattern 32. The uneven pattern 22 is integrally formed.
Thereby, in the light-transmitting colored layer 20, an uneven pattern 22 having a shape different from the pattern 32 is formed.

On the other hand, on the surface of the outer peripheral portion of the reflective polarizing plate 14 therebelow, a pattern 32 partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 and a different thermal transfer pressing die (mold). A new pattern 36 is formed by overlapping the pattern 34 by the 30 transfer patterns 28.
With this configuration, the pattern 32 formed in advance on the surface of the reflective polarizing plate 14 that is the display plate substrate and the light-transmitting colored layer 20 that is the coating layer are applied to the surface of the reflective polarizing plate 14. Overlapping patterns are formed by the patterns 22 and 36 formed after the process.

  By comprising in this way, after giving the pattern 32 previously formed in the surface of the reflective polarizing plate 14 which is a display board base | substrate, and the transparent colored layer 20 which is a coating layer on the surface of the reflective polarizing plate 14 The formed pattern 22 can be overlapped to express a three-dimensional concavo-convex pattern having a depth, and a novel pattern 36 is formed in the outer peripheral portion where the different patterns 32 and 34 overlap. Improvement of design variation can be realized.

(Example 7)
FIG. 10 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention.
In Example 3 described above, the pattern 32 was partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 in advance, and the pattern 22 different from the pattern 32 was formed on the central portion of the display panel 10. In this embodiment, the pattern 32 is previously formed on the outer peripheral portion of the reflective polarizing plate 14, and the same pattern 22 a as the pattern 32 is formed on the outer peripheral portion of the display plate 10. A pattern 22b different from the pattern 32 was formed.

That is, first, as shown in FIG. 10 (a), the reflection type polarizing plate 14 is formed in advance by forming a pattern 32 partially on the outer peripheral portion of the surface of the reflection type polarizing plate 14 and punching it into a display plate shape. prepare.
And as shown in FIG.10 (b), the light transmissive colored layer 20 is formed in the surface 14a at the side of visual recognition of this reflective polarizing plate 14 by printing etc., for example.

  Next, as shown in FIG. 10 (c), the same uneven transfer pattern 28a as the pattern 32 is formed on the outer peripheral portion of the surface, and the uneven transfer pattern different from the pattern 32 is formed in the central portion. As shown by the arrow in FIG. 10C, a light-transmitting colored layer formed on the surface 14a on the viewing side of the reflective polarizing plate 14 is prepared. 20 is pressed under heating (see FIG. 10D).

Then, as indicated by an arrow in FIG. 10E, the thermal transfer pressing die (die) 30 is separated from the light-transmitting colored layer 20 formed on the viewing-side surface 14a of the reflective polarizing plate 14. Move to.
As a result, as shown in FIG. 10E, the pattern 32 partially formed on the outer peripheral portion of the surface of the reflective polarizing plate 14 and the pattern on the outer peripheral portion of the light-transmitting colored layer 20 The same uneven pattern 22a as 32 is formed, and an uneven pattern 22b different from the pattern 32 is integrally formed in the central portion.

  As a result, in the light-transmitting colored layer 20, the same uneven pattern 22 a as the pattern 32 is formed on the outer peripheral portion, and the uneven pattern 22 b different from the pattern 32 is formed in the central portion. The

On the other hand, on the surface of the outer peripheral portion of the reflective polarizing plate 14 therebelow, the pattern 32 formed on the reflective polarizing plate 14 and the transfer pattern 28a of the thermal transfer pressing die (mold) 30 which is the same pattern as this. A clear pattern 36 is formed by overlapping the pattern 34 a of the formed light-transmitting colored layer 20.
Further, on the surface of the central portion of the reflective polarizing plate 14, the reflective polarized light is different from the pattern 32 formed on the outer peripheral portion of the reflective polarizing plate 14 due to the transfer pattern 28 b of the thermal transfer pressing die (mold) 30. The pattern 34b of the board 14 and the pattern 22b of the light-transmitting colored layer 20 are overlapped to form a clear pattern 38.

  By comprising in this way, the pattern 32 previously formed in the surface of the outer peripheral part of the reflective polarizing plate 14 which is a display board base | substrate which is the same pattern, and a coating layer on the surface of the outer peripheral part of the reflective polarizing plate 14 is carried out. The pattern 22a formed after applying a certain light-transmitting colored layer 20 overlaps, and the pattern shape is not blurred, and a clearer pattern can be obtained and a three-dimensional uneven pattern with depth can be expressed. It becomes.

  Moreover, in the outer peripheral part where the same pattern overlapped, the pattern 34b of the reflective polarizing plate 14 formed after applying the light-transmitting colored layer 20 as a coating layer on the surface of the outer peripheral part of the reflective polarizing plate 14, The pattern 22b of the light-transmitting colored layer 20 is overlapped to form a clear pattern 38, the pattern shape is not blurred, a clearer pattern can be obtained, and a three-dimensional uneven pattern with depth can be expressed. It becomes.

  In this embodiment, the pattern 32 is previously formed on the outer peripheral portion of the reflective polarizing plate 14, and the same pattern 22 a as the pattern 32 is formed on the outer peripheral portion of the display plate 10. In addition, although the pattern 22b different from the pattern 32 is formed, the combination, the arrangement position, and the like can be appropriately changed, and the pattern may be different from the same pattern.

  For example, although not shown, a pattern 22 a that is the same as the pattern 32 of the reflective polarizing plate 14 is formed in the central portion of the display plate 10, and a pattern 22 b that is different from the pattern 32 is formed on the outer peripheral portion of the display plate 10. Also good. Further, for example, the pattern formed on the reflective polarizing plate 14 side may be different between the outer peripheral portion and the central portion, and a uniform pattern may be formed on the entire surface of the display panel 10.

(Example 8)
FIG. 11 is a cross-sectional view of the display panel of Example 8 of the present invention, and FIG. 12 is a perspective view showing the first and second reflective polarizing plates of Example 8 of the present invention.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the first embodiment, and the same constituent members are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.

  The display panel 10 of this embodiment includes a solar cell 12, a first reflective polarizing plate 40 provided on the viewing side of the solar cell 12, and a second reflective polarizing plate 42 provided on the side facing the solar cell 12. And.

A circle-shaped uneven pattern 16 is formed on the surface of the first reflective polarizing plate 40 on the viewing side, and a light-transmitting colored layer 20 is provided on the surface of the viewing side of the pattern 16. A diffusion layer 44 is provided on the surface of the second reflective polarizing plate 42 facing the solar cell 12.
Further, the first and second reflective polarizing plates 40 and 42 and the solar cell 12 are simply stacked and held without using a fixing member, and are held by an inner frame for a watch or the like. In this embodiment, the value of the crossing angle s is set to about 15 degrees.

About the 1st reflective polarizing plate 40 and the uneven | corrugated pattern 16, since it is the same as that of the reflective polarizing plate 14 and the uneven | corrugated pattern 16 of Example 1, description is abbreviate | omitted.
Further, the second reflective polarizing plate 42 is different only in that the uneven pattern is not formed on the surface, and other points such as light transmission and reflection are described in the first embodiment. Since it is the same as that of the reflective polarizing plate 14, the description thereof is omitted.

  As described in the first embodiment, the first and second reflective polarizing plates 40 and 42 each have a light reflection axis and an easy light transmission axis. In this embodiment, FIG. As shown in FIG. 5, the first and second reflective polarizing plates 40 and 42 are laminated so that the directions of the light transmission easy axes 40a and 42a are different from each other.

By changing the value of the intersection angle s of the light transmission easy axes 40a and 42a, the amount of light transmitted through the two reflective polarizing plates of the first and second reflective polarizing plates 40 and 42 can be adjusted. it can.
The value of the intersection angle s is preferably set in the range of 5 to 45 degrees because it is necessary to secure the amount of light transmitted through the two reflective polarizing plates.

The first and second reflective polarizing plates 40 and 42 have a circular shape, but in FIG. 12, the shape is drawn in a simulated quadrilateral shape for easy understanding.
The light transmissive colored layer 20 is formed by mixing a white pigment with a resin and printing. The reason why the white pigment is used is to give a white feeling to the display board. When the film thickness is increased, whiteness is obtained but the transmittance is deteriorated.

Therefore, the film thickness is reduced to about 7 to 10 μm, and the transmittance is reduced by about 10%. If you want to produce other colors, use other pigments. In addition, a very thin metal film may be formed by a vapor deposition method, and it is preferable to select appropriately according to the desired color.
A similar white feeling can be obtained by providing a diffusion layer instead of the light-transmitting colored layer 20.

  Further, the diffusion layer 44 is a mixture of a diffusion agent having a function of diffusing light incident on an adhesive, an adhesive, or the like. As a material of the diffusion agent of the diffusion layer 44, granular, powdery, scale-like, needle Silica, glass, resin, etc. can be used. In the case of this example, as the material of the diffusing agent, a material in which granular glass is mixed in an adhesive was used.

As a result, the whiteness is further enhanced and the whiteness is enhanced by the diffusion action of the reflected light of the first and second reflective polarizing plates 40 and 42, the white color of the light-transmitting colored layer 20, and the diffusion layer 44. The circle pattern can be clearly seen.
As a result, a high-quality display board can be obtained, and the color of the solar cell 12 can be completely erased. Moreover, the same effect as Example 6 can be acquired.
In addition, in this Example 8, although the example which used two reflection type polarizing plates of the same kind was demonstrated, it is not limited to this, It is also possible to use a plurality of three or more reflection type polarizing plates. it can. It is also possible to use a plurality of different types of reflective polarizing plates in combination.

Example 9
FIG. 13 is a cross-sectional view of a display panel of Example 9 of the present invention, which is an example in which an uneven pattern is formed and a light-transmitting colored layer is provided on a reflective polarizing plate.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the first embodiment, and the same constituent members are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.
As shown in FIG. 13, the display panel of this embodiment includes a solar cell 12, a reflective polarizing plate 14 provided on the viewing side of the solar cell 12, and between the solar cell 12 and the reflective polarizing plate 14. And a transparent substrate 46 to be disposed.

Then, a lattice-like uneven pattern 16 is formed on the surface of the reflective polarizing plate 14 on the viewing side, and a light-transmitting colored layer 20 is provided on the surface of the uneven pattern 16.
Since the reflective polarizing plate 14 and the lattice-shaped uneven pattern 16 are the same as those in the first embodiment, detailed description thereof is omitted. Further, the reflection type polarizing plate 14 and the transmissive substrate 46 are fixed to each other by a fixing member 26a such as an adhesive or an adhesive.

Further, the transmissive substrate 46 and the solar cell 12 are fixed to each other by a fixing member 26b such as an adhesive or an adhesive.
Further, the light-transmitting colored layer 20 is formed by mixing copper metal powder with a transparent urethane resin to form an ink, and is formed on the surface of the lattice-shaped uneven pattern 16 of the reflective polarizing plate 14 by a printing method.

On the surface of the transparent substrate 46 facing the solar cell 12, an uneven pattern 48 that is a prism reflecting surface is formed. The transparent substrate 46 is formed by injection molding. At this time, the uneven pattern 48 which is the prism reflecting surface is also transferred from the mold and simultaneously formed.
The uneven pattern 48 which is the prism reflecting surface has a triangular prism shape, and is formed in a circle pattern or a spiral pattern.

The triangular angle is formed in the range of 75 to 100 degrees for both the concave and convex portions. Further, the height h is set to 15 to 100 μm, and the pitch p is set to about 150 μm.
It is preferable that the height and the pitch be formed so that the mold can be easily processed and is visible.
The light reflected by the concave / convex pattern 48, which is the prism reflection surface of the transparent substrate 46, or the light reflected from the solar cell 12 and transmitted through the concave / convex pattern 48, which is the prism reflection surface, is prismatic. Since the reflecting surface is formed in a circle shape or a spiral shape, it does not reflect in a uniform direction, but becomes reflected light scattered and scattered in all directions and transmitted through the reflective polarizing plate 14. Radiated outside.

As described above, the display panel of this embodiment has the reflected light of the reflective polarizing plate 14, the reflected light of the concavo-convex pattern 48, which is the prism reflecting surface of the transmissive substrate 46, and the color of the light transmissive colored layer 20. Thus, it is finished so that the same metallic feeling as that of the metal display board appears.
Further, the lattice-shaped uneven pattern 16 of the reflective polarizing plate 14 can be clearly seen from the viewing side. Further, the lattice-shaped uneven pattern 16 also has an action of refracting and scattering reflected light from below.

  By the reflected light from the concavo-convex pattern 48 which is the prism reflecting surface of the transmissive substrate 46 and the reflective polarizing plate 14, the metallic feeling similar to that of the lattice-shaped concavo-convex pattern 16 and the metal display plate becomes bright and clear. Visible.

  As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. In addition, the dark purple color and the crosshairs of the solar cell 12 are completely erased due to the fact that the reflected light from the solar cell 12 is reduced and scattering is caused by the action of the uneven pattern 48 which is the prism reflecting surface. Will not be visible.

  Although not shown, the reflective polarizing plate 14 can be disposed on the lower layer or the upper layer of the transmissive substrate 46. When the reflective polarizing plate 14 is disposed on the lower layer of the transmissive substrate 46, the reflective polarizing plate 14 is transmissive. The uneven pattern of the reflective polarizing plate through the conductive substrate 46 can be visually recognized, and a three-dimensional expression with a depth can be achieved.

  In this case, the transparent substrate 46 may be a transparent resin material such as polycarbonate or acrylic, an inorganic material such as glass, sapphire, or ceramic, a translucent color material, or the like, for example, a film made of a resin or the like. Thus, a display board having a clear color can be realized. In particular, when polycarbonate or acrylic is used, the light resistance can be further improved. Further, it is more preferable to form a diffusion layer, a UV reflection layer, or a UV absorption layer, or to contain a diffusion agent, a UV reflection agent, or a UV absorber.

In addition, when the reflective polarizing plate 14 is arranged on the upper layer of the transmissive substrate 46, in addition to the above-described materials, a phase difference plate, a metal plate having a plurality of small holes that transmit light, or the like is used, and an uneven pattern is formed. By combining with a reflective polarizing plate, it is possible to realize a display panel having a clear color with a metallic color or brightness.
Furthermore, by providing a light-transmitting colored layer and a diffusion layer on the surfaces of the transmissive substrate 46 and the reflective polarizing plate 14, a display panel having clear colors and high-quality whiteness can be obtained. The same effect can be obtained by adding a colorant or a diffusing agent to the transmissive substrate or the reflective polarizing plate.

(Example 10)
14 is a schematic cross-sectional view showing a display panel of Example 10 of the present invention, FIG. 15 is an optical path diagram of the display board of FIG. 14, and FIG. 16 is a perspective view showing first and second reflective polarizing plates. It is.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the first embodiment, and the same constituent members are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.

As shown in FIG. 14, the display panel of this embodiment includes a solar cell 12, first and second reflective polarizing plates 50 and 52 provided on the viewing side of the solar cell 12, and a first reflective type. A transmissive substrate 46 disposed between the polarizing plate 50 and the second reflective polarizing plate 52 is provided.
In addition, the light-transmitting colored layer 20 is provided on the surface on the viewing side where the stripe-shaped uneven pattern 16 of the first reflective polarizing plate 50 is formed, and the second reflective polarizing plate 52 A diffusion layer 54 is provided on the surface of the solar cell 12 on the opposite side.

The transparent substrate 46 has a smooth flat surface on both sides, and the first and second reflective polarizing plates 50 and 52 and the transparent substrate 46 are thermocompression bonded together over the entire surface.
In the manufacturing method of the display panel of this example, a transmissive substrate blank material is laminated between two reflective polarizing plate base materials, and the transmissive substrate blank material and two reflective polarizing plate base materials Are fixed together by thermocompression bonding and integrated.

Both the transparent substrate blank material and the reflective polarizing plate base material were used with both surfaces finished to a smooth plane.
Next, a striped uneven pattern 16 is formed on the surface of the integrated first reflective polarizing plate substrate, and then punched into a display plate shape and integrated first and second. Reflective polarizing plates 50 and 52 and a transmissive substrate 46 were formed.

  In FIG. 14, the first reflective polarizing plate 50, the transmissive substrate 46, the second reflective polarizing plate 52, and the thermocompression bonded region 13 of the transmissive substrate 46 are made easy to understand. The crossed diagonal lines are shown.

  In the case of such smooth flat surfaces, they can be crimped and fixed by a thermocompression bonding method without using an adhesive or a pressure-sensitive adhesive. Furthermore, the integrated second reflective polarizing plate 52 is fixed to the solar cell 12 at the outer periphery of the solar cell 12 with a fixing member 26 such as an adhesive or adhesive, and as shown in FIG. The display board of the Example was formed.

  The light-transmitting colored layer 20 provided on the surface of the uneven pattern 16 of the first reflective polarizing plate 50 is formed by mixing a white pigment with a resin and printing. The reason why the white pigment is used is to give a white feeling to the display board. When the film thickness is increased, whiteness is obtained, but the transmittance is deteriorated.

Therefore, the film thickness is reduced to about 7 to 10 μm, and the resulting transmittance is reduced to about 10%.
If you want to produce other colors, use other pigments. In addition, a very thin metal film may be formed by a vapor deposition method, and it is preferable to select appropriately according to the desired color.
The diffusion layer 54 provided on the surface of the second reflective polarizing plate 52 is mixed with a diffusing agent having a function of diffusing incident light into an adhesive, an adhesive, a resin (transparent ink, transparent paint), or the like. Thus, as the material for the diffusing agent, silica, glass, resin or the like in the form of particles, powder, scales, needles or the like can be used.

  The reflective polarizing plate base material as the material of the first and second reflective polarizing plates 50 and 52 is preferably a laminate in which a plurality of two types of films having different polarizabilities are alternately laminated. In this example, Since the product name “DBEF” manufactured by Sumitomo 3M Co. is used and is the same as that of the first embodiment, detailed description thereof is omitted.

  In this embodiment, a striped uneven pattern 16 is formed on the surface of the reflective polarizing plate substrate 11, and then punched into a display plate shape. The first reflective polarizing plate 50 shown in FIG. It is a thing. The second reflective polarizing plate 52 is the same except that the pattern is not formed.

  The first and second reflective polarizing plates 50 and 52 each have a light reflection axis and an easy light transmission axis. In this embodiment, as shown in FIG. The light reflection easy axes 50a and 52a and the light reflection axes 50b and 52b of the second reflective polarizing plates 50 and 52 are arranged in different directions.

By changing the value of the crossing angle s of the light transmission easy axes 50a and 52a, the amount of light transmitted through the two reflective polarizing plates of the first and second reflective polarizing plates 50 and 52 can be adjusted. it can.
In this embodiment, the value of the crossing angle s of the light transmission easy axes of the first and second reflective polarizing plates 50 and 52 is set to about 15 degrees.
Next, the operation of the first and second reflective polarizing plates 50 and 52 will be described with reference to FIG.

Of the light P1 incident on the first reflective polarizing plate 50, linearly polarized light having a vibration plane parallel to the light reflection axis 50b of the first reflective polarizing plate 50 is the first reflective polarizing plate. The light is reflected from 50 and is emitted to the outside as reflected light P2.
The linearly polarized light k1 having a vibration plane parallel to the light transmission easy axis 50a of the first reflective polarizing plate 50 passes through the first reflective polarizing plate 50 and enters the transmissive substrate 46.

The light k 1 incident on the transmissive substrate 46 is refracted in the transmissive substrate 46, passes through the transmissive substrate 46, and enters the second reflective polarizing plate 52.
Of the light k1 incident on the second reflective polarizing plate 52, the linearly polarized light n1 having a vibration plane parallel to the light reflecting axis 52b of the second reflective polarizing plate 52 is the second reflective polarized light. The light is reflected from the plate 52, passes through the transparent substrate 46 and the first reflective polarizing plate 50, and is radiated to the outside as reflected light P3.

The linearly polarized light component m1 having a vibration plane parallel to the light transmission easy axis 52a of the second reflective polarizing plate 52 is transmitted through the second reflective polarizing plate 52 and is incident on the solar cell 12.
As described above, the light transmission easy axis 52a of the second reflective polarizing plate 52 is arranged to be different from the light transmission easy axis of the first reflective polarizing plate 50, and the amount of light incident on the solar cell 12. Is adjusted to a desired size.

  The light incident on the solar cell 12 is divided into light that is absorbed therein and light that is reflected therefrom. The light reflected from the solar cell 12 is a linearly polarized light component m2 having a vibration plane parallel to the light transmission easy axis 52a of the second reflective polarizing plate 52, and the second reflective polarizing plate. 52, the transparent substrate 46, and the first reflective polarizing plate 50 are transmitted and refracted to be radiated as reflected light P4.

On the other hand, the linearly polarized light component n2 having a vibration plane parallel to the light reflection axis 52b of the second reflective polarizing plate 52 is reflected from the second reflective polarizing plate 52 and becomes reflected light P5. Return to the solar cell 12 side.
As a result, the amount of light incident on the first reflective polarizing plate 50 and reflected from the solar cell 12 and returning to the first reflective polarizing plate 50 becomes very small.

Furthermore, since the uneven pattern 16 is formed on the surface of the first reflective polarizing plate 50, the reflected light on the surface of the first reflective polarizing plate 50 is reflected in a uniform direction. Instead, the light is scattered and scattered in all directions and emitted outside.
The reflected light reflected by the solar cell 12 and transmitted through the second reflective polarizing plate 52 and the transmissive substrate 46 has a diffusion layer 54 formed on the surface of the second reflective polarizing plate 52 on the solar cell side. Therefore, the light is not reflected in a uniform direction, but is reflected and scattered in four directions, enters the first reflective polarizing plate 50, is refracted, and is emitted outside.

As described above, the reflected light from the solar cell 12 is reduced, and further, the unevenness pattern 16 of the first reflective polarizing plate 50 and the diffusion layer 54 of the second reflective polarizing plate 52 cause scattering. As a result, the crosshairs and dark purple color of the solar cell 12 are completely erased and cannot be seen at all.
As described above, the display panel of this embodiment has the light-transmitting colored layer 20 and the diffusion layer 54 to completely erase the color of the solar cell 12, and the whiteness is further increased and the whiteness is enhanced. The striped uneven pattern 16 can be clearly seen.

As a result, a high-quality display board can be obtained. In addition, the crosshairs and dark purple of the solar cell are completely erased and cannot be seen.
Also in this embodiment, the amount of light supplied to the solar cell 12 can be easily and easily adjusted, the manufacturing cost can be reduced, and the metal color and white color formed on the display board are stronger. Adjustment until it appears is possible.

Example 11
FIG. 17 is a schematic sectional view showing a display panel of Example 11 of the present invention.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the first embodiment, and the same constituent members are denoted by the same reference numerals, and detailed description thereof will be given. Omitted.
In this example, an uneven pattern is formed on the first reflective polarizing plate, and a light-transmitting colored layer is provided.

As shown in FIG. 17, the display board of this embodiment is disposed between the solar cell 12, the transmissive substrate 46 provided on the viewing side of the solar cell 12, and the solar cell 12 and the transmissive substrate 46. First and second reflective polarizing plates 50 and 52.
A stripe-shaped uneven pattern 16 is formed on the surface of the first reflective polarizing plate 50 facing the transparent substrate 46, and the light-transmitting colored layer 20 is formed on the surface of the uneven pattern 16. It is provided.

The light transmissive colored layer 20 is formed by mixing copper metal powder with a transparent urethane resin to form an ink, and is formed on the surface of the stripe-shaped uneven pattern 16 of the first reflective polarizing plate 50 by a printing method. Yes.
In addition, the transmissive substrate 46, the first and second reflective polarizing plates 50 and 52, and the solar cell 12 are stacked without using a fixing member and are held by an inner frame for a watch or the like. Further, the value of the crossing angle s of the light transmission easy axes of the first and second reflective polarizing plates 50 and 52 was set to about 15 degrees.

As described above, the display panel of this example is entirely composed of the reflected light of the first reflective polarizing plate 50, the reflected light of the second reflective polarizing plate 52, and the color of the light-transmitting colored layer 20. In particular, it is finished so that a metallic feeling similar to that of a metal display board appears.
In addition, the stripe-shaped uneven pattern 16 and the metallic feeling similar to that of the metal display board are brightly and clearly visually recognized by the reflected light. Furthermore, the striped uneven pattern 16 of the first reflective polarizing plate 50 is visually recognized through the transparent layer of the transmissive substrate 46, so that a three-dimensional expression with a depth can be achieved in a painting style.

  As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. Further, since the reflected light from the solar cell 12 is reduced, the dark purple and the cross hair of the solar cell 12 are completely erased and are not visually recognized.

Example 12
FIG. 18 is a schematic cross-sectional view showing a display panel of Example 12 of the present invention.
The display board 10 of this embodiment is basically the same in configuration as the display board 10 of the embodiment 11 shown in FIG. 17, and the same reference numerals are given to the same components, Detailed description thereof is omitted.
In this embodiment, an uneven pattern 58 is formed on the upper surface of the transparent substrate 46 of the display panel 10 of the embodiment 11 shown in FIG.

As described above, the display panel of this example is entirely composed of the reflected light of the first reflective polarizing plate 50, the reflected light of the second reflective polarizing plate 52, and the color of the light-transmitting colored layer 20. In particular, it is finished so that a metallic feeling similar to that of a metal display board appears.
Further, the reflected light causes the striped uneven pattern 16 of the first reflective polarizing plate 50 and the uneven pattern 58 on the upper surface of the transparent substrate 46 to overlap with each other to form a novel pattern and display a metal display. A metallic feeling similar to that of a plate is visible brightly and clearly.
Furthermore, the striped uneven pattern 16 of the first reflective polarizing plate 50 and the uneven pattern 58 on the upper surface of the transmissive substrate 46 are visually recognized through the transparent layer of the transmissive substrate 46, so With this, you can make a three-dimensional expression with depth.

As a result, a metallic feeling similar to that of a metal display board can be felt, and a high-quality display board can be obtained. Further, since the reflected light from the solar cell 12 is reduced, the dark purple and the cross hair of the solar cell 12 are completely erased and are not visually recognized.
In this case, the striped uneven pattern 16 of the first reflective polarizing plate 50 and the uneven pattern 58 on the upper surface of the transparent substrate 46 may be the same pattern or different patterns. In addition, the shape and arrangement position of the pattern can be changed as appropriate, such as making the pattern the same as a partially different pattern.
In this embodiment, an uneven pattern 58 is formed on the surface of the transmissive substrate 46 on the viewing side. Of the surface on the viewing side of the transmissive substrate 46, the surface of the transmissive substrate 46 on the solar cell 12 side. An uneven pattern 58 may be formed on at least one surface.

  In each of the above-described embodiments, the description has been given in the embodiment in which the concavo-convex pattern is provided on one surface of the transparent substrate. However, the concavo-convex pattern may be provided on either surface, and both surfaces may be provided. It may be provided.

  Moreover, in each Example, although the Example which provided the light-transmitting colored layer or the diffused layer in one surface of a reflective polarizing plate or a transmissive substrate was described, uneven | corrugated pattern was provided in either surface It may be provided on both surfaces.

Needless to say, the transparent substrate may contain at least one of a colorant and a diffusing agent, and has the same effect as that obtained by providing a light transmissive colored layer or a diffusion layer.
In each example, the example using one transmissive substrate has been described. However, the present invention is not limited to this, and a plurality of transmissive substrates can also be used.

Moreover, although the example which used the same kind of reflective polarizing plates in each Example was demonstrated in the Example using 2 sheets, it is not limited to this, A 3 or more reflection type polarizing plate can also be used. . It is also possible to use a plurality of different types of reflective polarizing plates in combination.
Furthermore, in the said Example, although it was set as the pattern surface which formed the uneven | corrugated pattern from the coating layer to the surface of a display board base | substrate, depending on the thickness and processing conditions (temperature, pressure) of a coating layer, it is only in a coating layer. A pattern surface may be formed.

The display board described in the above embodiments can be applied to a wireless function watch as shown in FIGS. 19 and 20, for example.
As shown in FIG. 20, the watch case 153 is divided into a plurality of parts. In this embodiment, the watch case 153 is divided into a watch case body 151 and a conductive turn ring 165.
In FIG. 20, reference numeral 174 is a waterproof packing for sealing the space between the back cover 154 and the watch case body 151 in a sealed state.

When the display panel of the present invention is used as a display panel (character board) in such a solar cell-driven timepiece with a wireless function, the design variation can be expanded particularly.
That is, the display panel of the present invention supplies a sufficient amount of light for power generation of the solar cell when used in a solar cell-driven timepiece with a solar function as described above, and the crosshairs and dark purple of the solar cell are visible. Can be invisible.

Moreover, since the reflective polarizing plate, the transmissive substrate, and the like constituting the display panel of the present invention are made of a non-conductive material such as transparent polycarbonate resin or acrylic resin, radio wave reception is not hindered. The reception performance of the antenna 159 can be kept high, and the function as a wireless function watch can be secured.
In the above wireless function watch, the wireless function watch having the dial ring 165 has been described. However, the wireless function watch can also be applied to a wireless function watch having no dial ring 165.

Further, the present invention can be applied to a normal wristwatch that does not have a solar cell 157 and a solar-powered wristwatch that has a solar cell and does not have a wireless function.
In the above-described embodiment, a radio wave clock having a wireless function for receiving a long wave standard radio wave (carrier wave) including time information and correcting the time based on the time information has been described, but the display board of the present invention is applied. The structure of the wireless function watch can also be applied to a watch having wireless functions such as a personal computer communication function, a mobile phone function, and a non-contact IC card function.

  Furthermore, the present invention is applied to devices that use the display panel as a display plate for devices such as a display device for a clock, a desk calculator, an automobile, an instrument panel of an airplane, a mobile phone, and the like. It is also possible.

  In the present invention, the display board of the present invention can be used, for example, as a display board for devices such as a clock display board, a desk calculator, an automobile, an instrument panel of an airplane, a mobile device such as a mobile phone.

1A and 1B show a display panel of Example 1. FIG. 1A is a plan view, and FIG. 1B is a cross-sectional view taken along line AA of FIG. FIG. 2 is a perspective view showing a reflective polarizing plate. FIG. 3 is an optical path diagram of the display board. FIG. 4 is a schematic cross-sectional view showing the manufacturing process of the display panel. FIG. 5 is a cross-sectional view of a display panel of Example 2 of the present invention. FIG. 6 is a process schematic diagram showing a manufacturing process of another embodiment of the display panel of the present invention. FIG. 7 is a process schematic diagram showing a manufacturing process of another embodiment of the display panel of the present invention. FIG. 8 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention. FIG. 9 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention. FIG. 10 is a process schematic diagram showing the manufacturing process of another embodiment of the display panel of the present invention. FIG. 11 is a cross-sectional view of a display panel according to an eighth embodiment of the present invention. FIG. 12 is a perspective view showing the first and second reflective polarizing plates of Example 8 of the present invention. FIG. 13 is a cross-sectional view of a display panel according to Embodiment 9 of the present invention. FIG. 14 is a schematic sectional view showing a display panel of Example 10 of the present invention. FIG. 15 is an optical path diagram of the display panel of FIG. FIG. 16 is a perspective view showing the first and second reflective polarizing plates. FIG. 17 is a schematic sectional view showing a display panel of Example 11 of the present invention. FIG. 18 is a schematic cross-sectional view showing a display panel of Example 12 of the present invention. FIG. 19 is an exploded perspective view in which the display board of the present invention is applied to a wireless function watch. 20 is a partial cross-sectional view taken along line AA in a state in which the wireless function watch of FIG. 19 is assembled. FIG. 21 is a diagram showing a general solar cell. FIG. 22 is a schematic cross-sectional view showing a conventional display panel. FIG. 23 is a schematic configuration diagram showing a reflective polarizer according to the prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display board 11 Reflective polarizing plate base material 12 Solar cell 13 Thermocompression-bonding area 14 Reflective polarizing plate 14a Surface 16 Pattern 18 Pattern 20 Light-transmitting colored layer 22 Pattern 22a Pattern 22b Pattern 24 Time letter 26 Fixing member 26a Fixing member 26b Fixing member 28 Transfer pattern 28a Transfer pattern 28b Transfer pattern 32 Pattern 34 Pattern 34a Pattern 34b Pattern 36 Pattern 38 Pattern 40 Reflective polarizing plate 40a Light transmission easy axis 42 Reflective polarizing plate 44 Diffusion layer 46 Transparent substrate 48 Pattern 50 Reflective type Polarizing plate 50a Easy light transmission axis 50b Light reflection axis 52 Reflective polarizing plate 52a Light transmission axis 52b Light reflection axis 54 Diffusion layer 56 Light transmission colored layer 58 Pattern 100 Solar watch dial 101 Base material 102 Diffusion layer 103 Polarization Body 103 Reflective Polarizer 109 Solar Cell 131 Polarizing Film Layer (A Layer)
132 Polarizing film layer (B layer)
151 Watch case body 153 Watch case 154 Back cover 157 Solar cell 159 Antenna 165 Ring 174 Waterproof packing

Claims (28)

A display board provided with a display board base provided on the viewing side,
A display board, wherein at least one surface of the display board substrate has a pattern surface on which an uneven pattern is formed after applying a coating layer on the surface.   The display panel according to claim 1, wherein the pattern surface is formed on the entire surface of the display board substrate or a part of the display board substrate.   The pattern surface is a pattern surface in which an uneven pattern is formed from the coating layer to the surface of the display plate substrate after the coating layer is applied to at least one surface of the display plate substrate. The display board in any one of 2.   4. The pattern surface according to claim 1, wherein the pattern surface is a pattern surface on which a concavo-convex pattern is formed after a coating layer is applied to the surface of a display panel substrate on which at least one surface has a pattern previously formed. The display board in any one.   The said pattern surface is formed from the same pattern as the pattern previously formed in the surface of the display board base | substrate, or the pattern different from the pattern previously formed in the surface of the display board base | substrate. Display board.   5. The display board according to claim 4, wherein the pattern surface is formed of a part having the same pattern as the pattern previously formed on the surface of the display board substrate and a part having a different pattern.   7. The coating layer according to claim 1, wherein the coating layer is formed of at least one coating layer selected from a metal coating layer, a metal oxide coating layer, a metal nitride coating layer, and a resin coating layer. Display board according to crab.   The metal coating layer is made of one or more metals selected from gold, silver, copper, aluminum, magnesium, zinc, and titanium, or an alloy of two or more metals selected from these metals. 8. The display board according to claim 7, wherein   The metal oxide coating layer is formed of at least one metal oxide selected from silicon oxide, zirconium oxide, niobium oxide titanium oxide, iron oxide, tin oxide, silicon oxide, and aluminum oxide. The display board according to claim 7.   8. The display panel according to claim 7, wherein the metal nitride coating layer is made of at least one metal nitride selected from silicon nitride, titanium nitride, and zirconium nitride.   The resin coating layer is selected from polycarbonate resin, acrylic resin, polyacetal resin, ABS resin, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, alkyd resin, vinyl chloride resin, polyurethane resin, polyester resin, and fluorine resin. The display panel according to claim 7, wherein the display panel is made of at least one kind of resin.   The display board according to claim 7, wherein the resin coating layer is formed by printing, spin coating, painting, or a laminated resin film. The display panel according to claim 1, further comprising a transmissive substrate on at least one surface side of the display panel base.   The display panel according to claim 13, further comprising an uneven portion on at least one surface side of the transmissive substrate.   The display panel according to claim 14, wherein the uneven portion has a prism shape. The display panel substrate has at least one reflective polarizing plate;
The display panel according to claim 1, wherein an uneven pattern is formed on at least one surface of the reflective polarizing plate. The display panel substrate has a plurality of reflective polarizing plates;
The display panel according to claim 16, wherein an uneven pattern is provided on at least one surface of the reflective polarizing plate disposed on the most visible side among the plurality of reflective polarizing plates.   The display panel according to claim 17, wherein the plurality of reflective polarizing plates are arranged such that directions of easy light transmission axes are different from each other.   19. The reflective polarizing plate has a light-transmitting colored layer, a diffusion layer, a UV reflection layer, or a UV absorption layer as a coating layer on at least one surface. The display board as described in.   The display board according to claim 18, wherein the transparent substrate is disposed on a side opposite to the viewing side.   The display board according to claim 18, wherein the transmissive substrate is disposed on a viewing side.   The display board according to claim 18, wherein the transparent substrate has a light-transmitting colored layer, a diffusion layer, a UV reflection layer, or a UV absorption layer on at least one surface.   The display board according to claim 18, wherein the transmissive substrate contains at least one of a colorant, a diffusing agent, a UV reflector, and a UV absorber.   The transparent substrate is composed of at least one transparent substrate selected from a transparent resin material plate, a translucent color material plate, a retardation plate, and a metal plate having a plurality of transmission holes. The display board in any one of 18-23.   25. A device comprising a solar power generation device on a lower surface side of the display board according to claim 1.   26. The equipment according to claim 25, further comprising an antenna on a lower surface side of the display board.   27. The device according to claim 25, wherein the device is a watch. A method of manufacturing a display board provided with a display board base provided on the viewing side,
A coating layer forming step of forming a coating layer on at least one surface of the display panel substrate;
A pattern forming step for forming a pattern surface by applying a concavo-convex pattern from the coating layer to the surface of the display plate substrate on the surface on which the coating layer is formed;
The manufacturing method of the display board characterized by including.

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