JP6248398B2 - Information display medium - Google Patents

Description

  The present invention relates to an information display medium having a good design and the like.

  Information display media (hereinafter, sometimes referred to as installation-type information display media) installed at a predetermined location for a predetermined period of time, such as signboards, posters, stickers, etc., are widely recognized by people. The purpose is to make it. However, due to the spread of portable information terminals and the like in recent years, the above-described installation type information display medium has become difficult to attract people's attention and interest sufficiently, and the displayed information may not be sufficiently recognized. There is a problem that there is.

Therefore, in recent years, it has been proposed to use a display device capable of performing variable display in order to improve the information recognition rate of these installation type information display media.
In addition, as a display device used for such an information display medium, use of electronic paper having characteristics such as low power consumption, flexible flexibility, thinness, and lightness has been studied (for example, Patent Documents 1 to 3). 2).

For example, in Patent Document 1, an electronic paper that performs two-color display and a display medium having light transmission arranged on the display surface side of the electronic paper are combined, and one of two colors is provided on the entire surface of the electronic paper. An information display medium is disclosed that can display information on a display medium by displaying one color and can erase information on the display medium by displaying the other color.
Patent Document 2 discloses an information display medium that is mainly used in train cars and the like, and displays specific information in a certain section using electronic paper.
However, although the information display medium disclosed in Patent Documents 1 and 2 can make the information stand out as compared with the conventional installation type information display medium, the design effect and the recognition effect caused by the display change are not sufficient. There is a problem.

  By the way, recently, facilities with an emphasis on space design are increasing, and information display media may be required to exhibit a design that matches the space in the facility. However, in the information display media disclosed in Patent Documents 1 and 2 and the like described above, the display surface when the information is not displayed cannot exhibit design properties, and thus cannot be adapted to the installed space. There is a problem.

  In view of this, information display media are required to exhibit good designability and recognition (hereinafter sometimes referred to as designability).

JP 2007-178880 A JP 2003-162245 A

  The present invention has been made in view of the above circumstances, and a main object thereof is to provide an information display medium having a good design and the like.

  The present invention relates to a visual effect-treated substrate having light transmittance and subjected to a visual effect treatment, a transparent substrate having a transparent substrate and a transparent electrode formed on the transparent substrate, a counter substrate, and A counter electrode substrate having a counter electrode formed on the counter substrate; and an electronic paper having a display medium layer disposed between the transparent electrode substrate and the counter electrode substrate and containing a display medium. An information display medium is provided, wherein the visual effect processing substrate is disposed on the side of the transparent electrode substrate of the electronic paper opposite to the display medium layer side.

  According to the present invention, by having the visual effect processing base material and the electronic paper, the visual effect of the visual effect processing base material and the visual effect displayed on the electronic paper can be combined and displayed. Can be an excellent information display medium.

  In the present invention, the visual effect processing base material includes a base material and a visual effect layer that is formed on the base material and has a light transmission property and has a first visual effect. The visual effect layer and the electronic paper It is preferable that the second visual effect displayed on the screen is arranged so as to overlap in plan view. Since the second visual effect can be displayed through the visual effect layer having the first visual effect in the information display medium of the present invention, more complicated visual effects can be displayed, and the design and the like are better. It is possible to provide a simple information display medium. More specifically, during normal times, only the colors, patterns, pictures, etc. that do not have characters etc. are displayed as the first visual effect using the visual effect processing base material, and in case of emergency or when alerting is required Furthermore, by displaying information having a specific meaning such as characters as the second visual effect using the electronic paper, the second visual effect can be changed from the state where only the color or the like as the first visual effect is displayed. It is possible to provide an information display medium capable of performing display with high design properties such as displaying the above-mentioned information in a floating manner.

  In this invention, the said information display medium has a solar cell arrange | positioned adjacent to the said electronic paper, the said display medium layer side of the said transparent electrode base material of the said electronic paper, and the said solar cell It is preferable that the visual effect processing base material is disposed on the surface. By setting it as the said structure, the electric power generated with the solar cell can be supplied to electronic paper. In addition, when the visual effect treatment base material is composed of only the base material, or when composed of the base material and the visual effect layer, the electronic paper and the solar cell can be shown integrally, and the design property ( An information display medium having a good design) can be obtained.

  The information display medium of the present invention has a visual effect processing base material and electronic paper, so that the visual effects of both can be combined and displayed, and the effect of being able to exhibit good design properties and the like is achieved. .

It is explanatory drawing which shows an example of the information display medium of this invention. It is explanatory drawing which shows an example of the display method by the information display medium of this invention. It is explanatory drawing which shows the other example of the information display medium of this invention. It is explanatory drawing which shows the other example of the display method by the information display medium of this invention. It is explanatory drawing which shows the other example of the display method by the information display medium of this invention. It is explanatory drawing which shows the other example of the information display medium of this invention. It is process drawing which shows an example of the manufacturing method of the information display medium of this invention.

Hereinafter, the information display medium of the present embodiment will be described.
The information display medium of the present embodiment is a transparent electrode base having a light-transmitting visual effect processing base material subjected to visual effect processing, a transparent base material, and a transparent electrode formed on the transparent base material. A counter electrode substrate having a material, a counter substrate, and a counter electrode formed on the counter substrate, and a display medium disposed between the transparent electrode substrate and the counter electrode substrate and containing a display medium An electronic paper having a layer, wherein the visual effect processing base material is disposed on a side opposite to the display medium layer side of the transparent electrode base material of the electronic paper. is there.

In the present specification, the “visual effect” means that an observer who observes the display surface of the information display medium of the present embodiment can visually recognize, for example, numbers, 7 segments, characters , Graphics such as symbols and geometric shapes, signs, trademarks, pictures, photographs, designs, colors, patterns, textures of visual effect processing base materials, etc., information having a specific meaning combining these, designs (designs), etc. Is mentioned.
In the information display medium of the present embodiment, both the visual effect processing base material and the display on the electronic paper have a visual effect. In the present specification, the visual effect of the visual effect processing substrate may be referred to as “first visual effect”, and the visual effect displayed on the electronic paper may be referred to as “second visual effect”.

The information display medium of this embodiment will be described with reference to the drawings.
FIGS. 1A and 1B are explanatory diagrams illustrating an example of the information display medium according to the present embodiment. FIG. 1A is a schematic diagram illustrating the configuration of the information display medium according to the present embodiment. FIG. 1B is a cross-sectional view of the information display medium shown in FIG.
As illustrated in FIGS. 1A and 1B, an information display medium 100 according to the present embodiment has a light-transmitting visual effect processing substrate 10 that has been subjected to visual effect processing, and a transparent substrate. A transparent electrode substrate 21 having a transparent electrode 21b formed on the material 21a and the transparent substrate 21a, a counter electrode substrate 22 having a counter electrode 22b formed on the counter substrate 22a and the counter substrate 22a, and Disposed between the transparent electrode base material 21 and the counter electrode base material 22 and containing a white and black two-phase twist ball 23a as a display medium, a solvent layer 23b containing a solvent, and the twist ball 23a and the solvent layer 23b And the electronic paper 20 having the display medium layer 23 having the display medium layer base material 23c for sealing. In addition, the information display medium 100 according to the present embodiment is characterized in that the visual effect processing base material 10 is disposed on the side opposite to the display medium layer 23 side of the transparent electrode base material 21 of the electronic paper 20. . 1A and 1B show an example in which the information display medium 100 has a frame 30 and the visual effect processing base material 10 is fixed to the frame 30. FIG. Further, in FIGS. 1A and 1B, the visual effect processing base material 10 is formed on the entire surface of the base material 11 and the base material 11 and has a light transmission property and a first visual effect layer 1. 12, the visual effect layer 12 and the second visual effect 2 displayed on the electronic paper 20 are arranged so as to overlap in plan view. In addition, the first visual effect 1 is a predetermined pattern, and the second visual effect 2 is any one of a sign (an arrow and a character “route”), a full white display (not shown), and a full black display (not shown). An example is shown.

A display method using the information display medium of the present embodiment will be described. FIGS. 2A to 2C are explanatory diagrams illustrating an example of a display method using the information display medium illustrated in FIGS. 1A and 1B.
In the information display medium 100 described above, as illustrated in FIG. 2A, a pattern (pattern 1) that is the first visual effect 1 is formed on the visual effect processing base material using the electronic paper. When the entire white display 2A is performed, the pattern 1 of the visual effect processing substrate and the entire white display 2A that has passed through the visual effect processing substrate, the pattern 1 that is whited as the display of the entire information display medium 100, 2A can be displayed. From such a state, when the driving of the electronic paper display medium is changed, and as shown in FIG. 2B, the sign 2B (arrow and the character “route”) is displayed as the second visual effect 2, By the pattern 1 of the visual effect processing base material and the sign 2B transmitted through the visual effect processing base material, it is possible to display the signs 1 and 2B emerging from the whitish pattern as the display of the entire information display medium 100. In addition, when the driving of the electronic paper display medium is changed from the state shown in FIG. 2A and the entire black display 2C is displayed as the second visual effect 2 as illustrated in FIG. 2C. With the pattern 1 of the visual effect processing base material and the entire black display 2C transmitted through the visual effect processing base material, the blackish patterns 1 and 2C can be displayed as the display of the entire information display medium 100.
Further, in the information display medium 100 described above, the display of the entire information display medium 100 is white as illustrated in FIGS. 2B and 2C, depending on how the electronic paper display medium is driven. After displaying the signs 1 and 2B emerging from the pattern, the blackish patterns 1 and 2C can be displayed.
In addition, the electronic paper displays the second visual effect 2A, 2B, and 2C without changing the display medium after applying the voltage and changing the display medium. be able to. Moreover, the information display medium of this Embodiment can always display a 1st visual effect with a visual effect processing base material. Therefore, compared with the case where the entire surface of the electronic paper is displayed in any one of the two colors in the conventional information display medium, it is possible to show better designability and the like.

FIGS. 3A and 3B are explanatory views showing another example of the information display medium of the present embodiment, and FIG. 3A shows a state in which the information display medium of the present embodiment is disassembled. FIG. 3B is a sectional view taken along line XX of the information display medium shown in FIG. 4A and 4B are explanatory diagrams showing an example of a display method using the information display medium illustrated in FIGS. 3A and 3B.
3A and 3B, the base material 11 of the visual effect processing base material 10 is a transparent base material, and the visual effect layer 12 formed in a predetermined shape on the base material 11 is the first visual effect 1. As an example, city names (“Tokyo” and “New York”) are displayed, and the electronic paper 20 displays time as the second visual effect 2. In addition, an example is shown in which the visual effect processing substrate 10 is disposed on the surface of the transparent electrode substrate 21 of the electronic paper 20 via an adhesive layer (not shown). Note that the details of the electronic paper 20 can be the same as those described with reference to FIGS. 1A and 1B, and thus the description thereof is omitted here.
In the information display medium 100 described above, as illustrated in FIGS. 4A and 4B, the city name that is the first visual effect 1 is displayed on the visual effect processing base material, and the electronic paper display medium is driven. As a result, the time 2A ₁ , 2A ₂ as the second visual effect 2 is changed to the time 2B ₁ , 2B ₂ and displayed on the electronic paper, thereby displaying the time in each city as the display of the entire information display medium 100. can do.

FIGS. 5A and 5B are explanatory views showing another example of the display method using the information display medium of the present embodiment. For ease of explanation, the information display medium 100 is indicated by a broken line in FIG.
An information display medium 100 used in FIGS. 5A and 5B is embedded in a wall 200. Further, in the information display medium 100, the visual effect layer 12 in the visual effect processing substrate (not shown) is light-transmitting, and as shown in FIGS. 5 (a) and 5 (b), the first visual effect is obtained. 1 has a pattern similar to the pattern of the wall 200. Further, as shown in FIGS. 5A and 5B, the electronic paper (not shown) displays characters (“power generation”) and figures as the second visual effect 2 by lighting them. The visual effect layer 12 is formed on the substrate so as to overlap the second visual effect 2 in plan view.
In such an information display medium 100, the second visual effect of the electronic paper is not turned on in normal times, so that the first visual effect 1 is displayed as the entire information display medium 100 as shown in FIG. Only a pattern similar to the pattern of a certain wall 200 can be displayed. On the other hand, when an emergency or alert is required, the first visual effect 1 is displayed as the entire information display medium 100 as illustrated in FIG. 5B by turning on the second visual effect of the electronic paper. The second visual effect 2 can be displayed with the same pattern as the pattern of the wall 200 being transmitted.
Therefore, the information display medium in FIGS. 5A and 5B can be assimilated with the pattern of the wall 200 in a normal state, and the observer cannot feel the presence of the information display medium 100. In addition, it is possible to perform a display with high designability such as alerting as necessary.

  According to the present embodiment, since the visual effect processing substrate and the electronic paper are included, the visual effect of the visual effect processing substrate and the visual effect displayed on the electronic paper can be combined and displayed. An information display medium with good properties and the like can be obtained.

  More specifically, according to the present embodiment, the first visual effect and the second visual are obtained by including the visual effect processing base material that displays the first visual effect and the electronic paper that displays the second visual effect. Since the effect can be observed at the same time and the visual effect obtained by combining the first visual effect and the second visual effect can be displayed, an information display medium having a good design and the like can be obtained.

In addition, according to the present embodiment, since the second visual effect can be changed depending on how the electronic paper display medium is driven, it is possible to perform display with change using one information display medium, It is possible to provide an information display medium having a good design and the like that easily attracts people's attention.
In addition, in the information display medium using the conventional electronic paper, when the entire electronic paper is displayed in any one of the two colors, there is a problem that the display surface cannot show the designability or the like. However, in the present embodiment, the first visual effect can be constantly displayed by the visual effect processing base material even in a state where the display medium of electronic paper is not driven. Can show.
As described above, the electronic display medium of this embodiment can perform various displays using the visual effect processing base material and the electronic paper.
Hereinafter, details of the information display medium of the present embodiment will be described.

1. Visual effect processing base material The visual effect processing base material used in the present embodiment has light permeability and is subjected to visual effect processing.
“A visual effect processing base material is subjected to a visual effect processing” refers to a case where the visual effect processing base material is subjected to a process for giving a first visual effect described later. In addition to the case where the visual effect layer having the first visual effect is formed, the selection of the material of the base material itself used for the visual effect processing base material, the processing of the base material surface, and the like are included. .
“Light transmittance” will be described later.

The first visual effect is usually a visual effect that is constantly displayed on the display surface of the information display medium. Such a first visual effect is appropriately selected from the visual effects described above according to the use of the electronic paper and the like. Among these, the color, the pattern, the texture of the visual effect processing base material, and the like are preferable. This is because the information display medium of the present embodiment can be arranged in conformity with the use environment such as a wall material. In addition, when the first visual effect is a pattern, more complicated visual effects can be displayed as described later by using the second visual effect as information having a specific meaning, and the design properties and the like are better. It is because it can be set as a simple information display medium.
Examples of the pattern include, but are not limited to, woodgrain, marble, stripes, dots, and floral patterns.

  The visual effect processing base material is not particularly limited as long as it has light transmittance and the first visual effect, and may be composed of a base material and a visual effect layer, or composed of only the base material. It may be a thing. Hereinafter, each case will be described.

(1) When comprised by a base material and a visual effect layer (a) Visual effect layer The visual effect layer used for a visual effect processing base material is formed on the base material mentioned later, and is the 1st visual effect. It is what has.

  The visual effect layer is not particularly limited as long as the desired first visual effect can be displayed. The visual effect layer may have light transparency or may not have light transparency. It is preferable to have. Further, when the visual effect layer is light transmissive, it is preferably formed on the base material so as to overlap the second visual effect displayed on the electronic paper in a plan view. Since the second visual effect can be displayed through the visual effect layer having the first visual effect in the information display medium of the present invention, more complicated visual effects can be displayed, and the design and the like are better. It is possible to provide a simple information display medium. More specifically, during normal times, only the colors, patterns, pictures, etc. that do not have characters etc. are displayed as the first visual effect using the visual effect processing base material, and in case of emergency or when alerting is required Furthermore, by displaying information having a specific meaning such as characters as the second visual effect using the electronic paper, the second visual effect can be changed from the state where only the color or the like as the first visual effect is displayed. It is possible to provide an information display medium capable of performing display with high design properties such as displaying the above-mentioned information in a floating manner.

  In the present embodiment, “the visual effect layer overlaps the second visual effect displayed on the electronic paper in plan view” means that when the information display medium of the present embodiment is observed from the display surface, The region where the visual effect layer is formed on the visual effect processing substrate and the region where the second visual effect is displayed on the electronic paper are arranged to overlap each other.

  The specific light transmittance of the visual effect layer is not particularly limited as long as the visual effect processing substrate can exhibit the light transmittance described later, and is appropriately determined according to the use of the information display medium of the present embodiment. can do.

Moreover, as a formation position on the base material of the visual effect layer, when the visual effect layer has light transmittance, the visual effect layer may be partially formed in a predetermined shape on the base material. It may be formed on the entire upper surface.
On the other hand, when the visual effect layer is not light-transmitting, the visual effect layer is usually partially formed in a predetermined shape on the substrate, and the second visual effect is provided in the information display medium of the present embodiment. Is formed so as not to overlap with the area where is displayed in plan view.

The visual effect layer is usually formed by printing on a substrate.
The material of the visual effect layer, the thickness of the visual effect layer, and the method of forming the visual effect layer can be the same as those used for general printed materials, and thus description thereof is omitted here.

(B) Base material The base material used for a visual effect processing base material supports the visual effect layer mentioned above.
The substrate has light transparency. The specific light transmittance of the base material is not particularly limited as long as the visual effect processing base material can exhibit the light transmittance described later, the type of the visual effect layer, the type of electronic paper, and the present embodiment. It is determined appropriately according to the use of the information display medium. Further, the base material itself may have a visual effect or may not have a visual effect. In the present embodiment, the substrate may have transparency or may not have transparency, but it is preferable that the substrate has transparency. This is because the light transmission property of the light transmissive substrate can be improved. The transparency of the base material can be the same as the transparency of the transparent base material described in the section “2. Electronic paper” to be described later.

The base material used in the present embodiment may be a rigid base material or a flexible base material.
Among these, in the present embodiment, it is preferable to use a base material having flexibility. This is because by using a flexible substrate, it is possible to impart flexibility to the electronic paper and improve workability. Moreover, it is because a visual effect processing base material can be formed at less cost. Further, when the visual effect processing base material is exchanged in the information display medium of the present embodiment, the visual effect processing base material can be easily attached to and detached from the surface on the transparent electrode side of the electronic paper.

Examples of such a base material include an inorganic base material and a resin base material.
Examples of the inorganic substrate include a glass substrate. Moreover, as glass, soda-lime glass, alkali-free glass, quartz glass, etc. can be used, and alkali-free glass is preferable among them.
On the other hand, as the resin used for the resin substrate, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl alcohol, polyimide, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyether imide, polyether ether ketone, polyether ketone, Examples thereof include polyphenylene sulfide, liquid crystal polymer, epoxy resin, silicone resin, phenol resin, acrylic resin, polycarbonate resin, styrene, and triacetyl cellulose (TAC).

  Examples of the substrate itself having a visual effect include frosted glass, shoji paper, Japanese paper, a colored glass substrate, a colored resin substrate, and the like.

  The thickness of the substrate can be appropriately selected according to the use of the information display medium of the present embodiment, and is not particularly limited, but is within the range of 10 μm to 5000 μm, particularly within the range of 30 μm to 3000 μm, particularly It is preferably in the range of 50 μm to 2000 μm. If the thickness of the base material is too thin, the visual effect processing base material may be easily damaged. If the thickness of the base material is too thick, the light transmission may not be sufficiently exhibited or information display may be performed. This is because the workability of the medium may be reduced.

(2) In the case of being composed only of a base material When the visual effect processing base material is composed of only a base material, the base material is not particularly limited as long as it has light permeability and a first visual effect. . For example, the above-described base material itself having a visual effect can be used.

(3) Visual effect processing base material The visual effect processing base material used for this Embodiment has a light transmittance.
In the present embodiment, “the visual effect processing substrate has light transmittance” means that an observer who has observed the display surface of the information display medium of the information display medium of the present embodiment uses the visual effect processing substrate. It means that the change of the second visual effect that is transmitted and displayed on the surface of the transparent electrode substrate of the electronic paper can be observed. Moreover, not only when the part which overlaps with the said 2nd visual effect in planar view in a visual effect processing base material has transparency, but the base material used for a visual effect processing base material does not have transparency as mentioned above. In the case where the visual effect layer is formed on the entire surface of the base material, the second visual effect is changed by transmitting the base material or the part where the base material and the visual effect layer are formed. It means that it can be observed.
The average transmittance in the visible light region of the specific visual effect processing substrate is appropriately selected depending on the type of electronic paper and the use of the information display medium of the present embodiment, and is not particularly limited, but is 40% or more Of these, 50% or more, particularly 60% or more is preferable. If the average transmittance in the visible light region of the visual effect processing substrate is too small, it is displayed by the visual effect processing substrate even when the electronic paper display medium is driven in the lower layer of the visual effect processing substrate. This is because it may be difficult to read the second visual effect together with the first visual effect.
Further, the upper limit of the average transmittance in the visible light region of the visual effect processing substrate is not particularly limited, but is, for example, about 80%.
The average transmittance in the visible light region of the visual effect processing base material can be obtained by a general measurement method. For example, a haze / transmittance meter HM-150 (Murakami Color Research Laboratory) or a microspectroscopic device It can obtain | require by measuring using OSP-SP2000 (made by OLYMPUS).

  The visual effect processing base material is disposed on the side opposite to the display medium layer side of the transparent electrode base material of the electronic paper. In the present embodiment, “the visual effect processing substrate is disposed on the side opposite to the display medium layer side of the transparent electrode substrate of the electronic paper” is viewed from the observer in the information display medium of the present embodiment. This means that the visual effect processing base material is disposed closer to the observer side than the transparent electrode base material surface which is the display surface of the electronic paper.

  Moreover, the visual effect processing base material is normally arrange | positioned on the whole surface on the opposite side to the display medium layer side of the transparent electrode base material of electronic paper.

  When the visual effect processing base material is composed of a base material and a visual effect layer, the visual effect layer side of the visual effect processing base material and the transparent electrode base material side of the electronic paper may be arranged to face each other. The substrate side of the visual effect processing substrate and the transparent electrode substrate side of the electronic paper may be disposed so as to face each other.

  Further, as a method for arranging the visual effect processing base material, the transparent electrode base material of the electronic paper and the visual effect processing base material may be pasted together via an adhesive layer described later, and the information display medium is a frame. May be arranged by fixing the visual effect processing substrate to the frame.

2. Electronic paper The electronic paper used in the present embodiment has a transparent electrode substrate, a counter electrode substrate, and a display medium layer.

The electronic paper displays the second visual effect.
The second visual effect is usually a visual effect accompanied by a change due to driving of the display medium of electronic paper in the information display medium of the present invention. Such a second visual effect may be, for example, a fixed visual effect expressed by the presence or absence of the specific shape on the display surface with the shape of the counter electrode being a specific shape in advance. Further, a rewritable visual effect expressed by being changed by using the counter electrode may be used. The second visual effect may include both a fixed visual effect and a rewritable visual effect.

Specifically, the second visual effect is appropriately selected from the visual effects described above depending on the use of the electronic paper, among others, geometric shapes, letters, numbers, signs, marks, designs, etc. Further, it is preferable that the color is a full-color display. The second visual effect is preferably a 7-segment display.
Moreover, when the visual effect processing base material mentioned above has a color, a pattern, a picture, etc. which do not have a character etc. as a 1st visual effect, a 2nd visual effect may be information which has a specific meaning. preferable.
The “specific meaning” is appropriately determined according to the use of the information display medium, and is not particularly limited. Examples include, but are not limited to, advertisements, alerts, guidance, weather information, earthquake information, and time.

Further, the magnitude of the second visual effect is appropriately selected according to the type of electronic paper, the use of the information display medium, and the like, and is not particularly limited. For example, the minimum width of the second visual effect is 100 μm or more. It is preferable that it is 1 mm or more especially. This is because when the minimum width of the second visual effect is equal to or larger than the above value, the second visual effect can be displayed favorably.
Note that the minimum width refers to the thickness of a character line in FIG.

(1) Transparent electrode base material The transparent electrode base material used for electronic paper has a transparent base material and the transparent electrode formed on the transparent base material. In the information display medium of the present embodiment, the surface of the electronic paper on the transparent electrode substrate side is used as the display surface.

(A) Transparent base material A transparent base material supports a transparent electrode.
The transparent substrate is not particularly limited as long as it has a desired transparency, and the same transparent substrate used for general electronic paper can be used. Especially, it is preferable that the transmittance | permeability in visible region is 80% or more, and, as for the transparent base material used for this Embodiment, it is more preferable that it is 90% or more. This is because, when the transmittance is in the above range, it is possible to prevent the display brightness of the electronic paper from being lowered.
Here, the transmittance | permeability of a transparent base material can be measured by JISK7361-1 (the test method of the total light transmittance of a plastic-transparent material).

The transparent substrate may be a rigid transparent substrate or may be a transparent substrate having flexibility.
When a transparent base material having flexibility is used, flexibility can be imparted to the electronic paper, and processability can be improved.

Examples of such a transparent substrate include an inorganic transparent substrate and a resin transparent substrate.
As the inorganic transparent substrate, a glass substrate can be exemplified. Moreover, as glass, soda-lime glass, alkali-free glass, quartz glass, etc. can be used, and alkali-free glass is preferable among them.
On the other hand, as resins used for resin-made transparent substrates, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyvinyl alcohol, polyimide, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyether imide, polyether ether ketone, polyether ketone , Polyphenylene sulfide, liquid crystal polymer, epoxy resin, silicone resin, phenol resin and the like.

Moreover, when using a resin-made transparent base material, what can be laminated can be used. In this case, the substrate used for sealing the display medium layer together with the transparent substrate made of resin such as a counter substrate described later or a display medium layer substrate used as necessary is usually laminated. What can be used is used.
Examples of the transparent base material that can be laminated include a base material on which a base film material and a sealant film material that can be laminated are laminated.

As base film materials that can be laminated, polyimide, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyether imide, polyether ether ketone, polyether ketone, polyphenylene sulfide, A liquid crystal polymer, an epoxy resin, a silicone resin, a phenol resin, etc. are mentioned.
Moreover, as a sealant film material, a non-stretched polypropylene film, a biaxially stretched polypropylene film, etc. are mentioned. It is also possible to use a coating film made of a heat-sealable material such as polyurethane, polyacryl, epoxy resin, or silicone.
At the time of laminating, the transparent base material and the counter base material to be described later or the display medium layer base material used as required are such that the sealant film material side of the laminated base film material and sealant film material faces each other. Placed and glued.

  In addition, in the case of laminating using a transparent base material in which a base film material and a sealant film material that can be laminated are laminated and a counter base material described later or a base material for a display medium layer that is used as necessary, the above transparent base material is used. It is more preferable that the material and the material such as a counter substrate described later are the same base film material and sealant film material. By using the same base film material and sealant film material for the transparent substrate and the counter substrate described later, it is possible to improve the adhesion between the transparent substrate and the counter substrate when laminating. Because it becomes.

  The thickness of such a transparent substrate is not particularly limited as long as a transparent electrode described later can be formed. The thickness of such a transparent substrate is preferably in the range of 10 μm to 300 μm, more preferably in the range of 15 μm to 100 μm, and particularly preferably in the range of 25 μm to 50 μm. It is because it becomes difficult to form the transparent electrode mentioned later on a transparent substrate when the thickness of the said transparent substrate is less than the said range. In addition, when the thickness of the transparent substrate exceeds the above range, it may be difficult to drive the display medium when the display medium layer is disposed on the side opposite to the transparent electrode described later. is there.

(B) Transparent electrode A transparent electrode is formed on one surface of a transparent base material.
When the second visual effect displayed by the electronic paper is a fixed visual effect, the transparent electrode is usually formed on the entire surface of the transparent substrate.
On the other hand, when the second visual effect displayed by electronic paper is a rewritable visual effect, for example, when displaying a rewritable visual effect by passive drive, either one of the transparent electrode and the counter electrode described later is used. The scanning (row) electrode is used as the signal (column) electrode. Since the shape of the transparent electrode in this case can be the same as that used for general passive-driven electronic paper, description thereof is omitted here.
In addition, when the second visual effect displayed by the electronic paper includes a fixed visual effect and a rewritable visual effect, the transparent electrode corresponding to the area displaying each visual effect has the above-described modes.

  The material of the transparent electrode used in this embodiment is not particularly limited as long as it is a conductive material capable of forming a transparent electrode. For example, indium tin oxide (ITO), indium zinc oxide (IZO) ), Conductive oxides such as tin oxide, zinc oxide, indium oxide and aluminum zinc oxide (AZO), metals such as Au, Ni, and Ag, polyaniline, polyacetylene, polyalkylthiophene derivatives, polysilane derivatives, and the like. A molecule | numerator, a carbon nanotube, a graphene, etc. can be used, and ITO is used suitably especially.

  The thickness of the transparent electrode used in the present embodiment is not particularly limited as long as it can function as a transparent electrode, but is preferably in the range of 15 nm to 200 nm. When the thickness of the transparent electrode is less than the above range, it is difficult to form the transparent electrode with a uniform thickness. When the thickness of the transparent electrode exceeds the above range, it is used for forming the transparent electrode. This is because the manufacturing cost increases because more time and materials are required.

  The method for forming the transparent electrode used in the present embodiment is not particularly limited as long as the transparent electrode can be formed with a desired thickness. As a method for forming such a transparent electrode, a general electrode film forming method can be used. For example, a PVD method such as a vacuum deposition method, a sputtering method, or an ion plating method, a CVD method, or a conductive paste is used. The method of apply | coating etc. are mentioned.

(C) Other structure The transparent electrode base material in this Embodiment will not be specifically limited if it has the transparent electrode mentioned above and a transparent base material, A required structure can be selected suitably and can be added. .
Examples of such a configuration include an auxiliary electrode and wiring.

Here, the auxiliary electrode is an electrode formed in a mesh shape using a conductive material, and is formed by laminating on a transparent electrode. By using the auxiliary electrode together with the transparent electrode, the conductivity of the transparent electrode substrate can be improved.
Since the auxiliary electrode can be the same as that used for a transparent electrode substrate of general electronic paper, description thereof is omitted here.

  Moreover, about the wiring used for a transparent electrode base material, since it can be made to be the same as that used for general electronic paper, description here is abbreviate | omitted.

(D) Others The arrangement of the transparent electrode substrate in the electronic paper is not particularly limited as long as the display medium in the display medium layer can be driven, and the transparent electrode side of the transparent electrode substrate is the display medium. It may be arranged so as to face the layer, or may be arranged so that the transparent substrate side faces the display medium layer. By arranging the transparent electrode so that the transparent electrode side faces the display medium layer, the driving voltage can be lowered. Moreover, since the transparent electrode is not in direct contact with the display medium layer by arranging the transparent substrate side to face the display medium layer, when the display medium layer contains a solvent, the material of the transparent electrode is the display medium layer. Therefore, the display quality of the electronic paper can be prevented from deteriorating.

(2) Counter electrode base material The counter electrode base material in this Embodiment has a counter base material and the counter electrode formed on the counter base material.

(A) Counter base material The counter base material used for electronic paper supports a counter electrode.
Moreover, the opposing base material in this Embodiment has insulation normally.

The counter substrate used in the present embodiment is not particularly limited as long as the counter electrode can be formed on the counter substrate. Moreover, as said opposing base material, it may have transparency and does not need to have transparency, However, What does not have transparency is more preferable. The electronic paper used in this embodiment usually uses the transparent electrode substrate side as the display surface side. Therefore, in the present embodiment, when the electronic paper is observed from the transparent electrode base material side, the opposing base material is disposed on the lower layer side of the display medium layer that displays the second visual effect. This is because, when the substrate has transparency, the ground color of the layer disposed in the lower layer of the opposing substrate is observed, and the second visual effect displayed on the electronic paper may be difficult to see.
Moreover, in this Embodiment, you may color the opposing base material with the same color as one color of the display medium of the display medium layer mentioned later as needed.

  Such an opposing base material may be a flexible base material or a rigid base material.

  Such a counter substrate may be an inorganic substrate or a resin substrate. Specific examples of the material for the inorganic base material and the resin base material include the inorganic materials and resin materials described in the section of the transparent base material described above.

  In the present embodiment, a substrate that can be laminated can also be used as the counter substrate. About the base material which can be laminated, since it can be made to be the same as that of the item of the transparent base material mentioned above, description here is abbreviate | omitted.

  In addition to the materials described above, the opposing substrate may be a substrate composed of glass epoxy resin, paper phenol, paper epoxy, glass composite, Teflon, alumina, low temperature co-fired ceramics, composite, halogen-free substrate, etc. Can be mentioned.

(B) Counter electrode The counter electrode used in the present embodiment is formed on one surface of the counter substrate.

  When the second visual effect displayed by the electronic paper is a fixed visual effect, the counter electrode is used as a display electrode and has a pattern shape corresponding to the second visual effect displayed on the electronic paper.

  Here, the “pattern shape corresponding to the second visual effect displayed on the electronic paper” is not only the same shape as the second visual effect displayed on the display surface of the information display medium of the present embodiment, This includes the shape corresponding to the background.

  Moreover, the pattern shape of the counter electrode may be a pattern shape that enables one second visual effect to be displayed using one counter electrode, and 1 using a plurality of counter electrodes. It may be a pattern shape that makes it possible to display two second visual effects.

  The pattern shape of the counter electrode is not particularly limited, and is appropriately selected according to the use of the information display medium of the present embodiment. Specifically, a shape corresponding to the second visual effect described above can be given. Moreover, as a shape of a counter electrode, the shape which comprises 7 segments mentioned above can be mentioned.

  On the other hand, when the second visual effect displayed by the electronic paper is a rewritable visual effect, for example, when displaying a rewritable visual effect by passive driving, either the transparent electrode or the counter electrode described above is used. The scanning (row) electrode is used as the signal (column) electrode. Since the shape of the counter electrode in this case can be the same as that used in general passive-driven electronic paper, description thereof is omitted here.

  When the second visual effect displayed by the electronic paper includes a fixed visual effect and a rewritable visual effect, the counter electrode corresponding to the area displaying each visual effect has the above-described modes.

  The counter electrode is not particularly limited as long as it is made of a conductive material and can display a second visual effect using a display medium layer to be described later by applying a voltage to the counter electrode. It is not something. Such a counter electrode may consist only of the counter electrode, or may have a counter electrode and a counter electrode insulating layer.

The material used for such a counter electrode is not particularly limited as long as it is a conductive material. For example, metals such as Au, Al, Ag, Ni, and Cu, ITO, SnO ₂ , and ZnO: Examples thereof include a transparent conductor such as Al, and a conductive paste in which a conductive agent is mixed with a solvent or a synthetic resin binder. Examples of the conductive agent include cationic polymer electrolytes such as polymethylbenzyltrimethylammonium chloride and polyallylpolymethylammonium chloride, anionic polymer electrolytes such as polystyrene sulfonate and polyacrylate, and electronically conductive zinc oxide. Tin oxide, indium oxide, carbon fine powder, carbon nanotube, Ag fine powder and the like are used.

When the counter electrode has a counter electrode insulating layer, a resin layer, an adhesive layer, or the like can be used as the counter electrode insulating layer. Since the resin material used for the resin layer can be the same as the resin material used for the transparent substrate described above, the description thereof is omitted here.
On the other hand, known adhesives can be used for the adhesive layer. Moreover, you may use the adhesive agent which can be peeled later mentioned.

In addition, as a method for forming the counter electrode, when the counter electrode is directly formed on the counter base material, the above-described metal, transparent conductor, etc. using a metal mask or the like, a sputtering method, a vacuum evaporation method, a CVD method Examples thereof include a method of forming a thin film on a counter substrate by a coating method, a method of applying a pattern on the counter substrate using the conductive paste, and the like.
On the other hand, when forming the counter electrode having the insulating layer for the counter electrode on the counter substrate, for example, a method of cutting a metal foil into a desired pattern and bonding it on the counter substrate using an adhesive, or a resin Examples include preparing a resin base material as a layer, forming a metal film as a counter electrode on the resin base material, cutting it into a desired pattern, and bonding it onto the counter base material using an adhesive Can do.

  The thickness of the counter electrode is not particularly limited as long as an image can be displayed with the electronic paper. Specifically, the thickness of the counter electrode is in the range of 50 nm to 500 μm, and in particular, 100 nm to It is preferable to be in the range of 100 μm, particularly in the range of 300 nm to 50 μm. If the thickness of the counter electrode is less than the above range, it is difficult to form a counter electrode having a uniform thickness.If the thickness exceeds the above range, it takes time to form the counter electrode, In addition, since a large amount of material for the counter electrode is required, the manufacturing cost increases.

(C) Other Configurations The counter electrode substrate in the present embodiment is not particularly limited as long as it has the counter electrode and the counter substrate described above, and a necessary configuration can be appropriately selected and added. .
Examples of such a configuration include counter electrode wiring.
The counter electrode wiring may be formed on the counter substrate, and as illustrated in FIG. 7C described later, the counter electrode wiring 22e is formed on the wiring insulating layer 22d, and the counter electrode 22b is formed. You may arrange in.

  Since the material, shape, formation method, and the like of the counter electrode wiring and the wiring insulating layer can be the same as those used in general electronic paper, description thereof is omitted here.

Further, as illustrated in FIG. 7C described later, when the counter electrode wiring 22e and the wiring insulating layer 22d are used, a via hole having a predetermined size is provided between the wiring insulating layer 22d and the counter electrode 22b. The counter electrode via 22c may be arranged, or the wiring via 22f having a via hole of a predetermined size may be arranged on the surface of the counter electrode wiring 22e. In this case, a conductive layer 22g for connecting the counter electrode 22b and the counter electrode wiring 22e is formed by injecting a conductive paste or the like into the via hole.
Further, in a portion where the counter electrode wiring 22e and the wiring insulating layer 22d are not disposed, a spacer 22i may be disposed in order to reduce unevenness due to the presence or absence of the counter electrode wiring or the like. FIG. 7C shows an example of a spacer formed using the same material as the laminated body of the counter electrode wiring 22e and the wiring insulating layer 22d.
Further, the protective sheet 22h may be disposed on the outermost surface of the counter electrode substrate 22 opposite to the display medium layer 23 side.
The counter electrode via, the wiring via, the conductive layer, the spacer, the protective sheet, and the like described above can be the same as those used in known electronic paper. For example, JP 2012-242808 A Therefore, the description thereof is omitted here.

(D) Others The arrangement of the counter electrode substrate in the electronic paper is not particularly limited as long as the display medium in the display medium layer can be driven, and the counter electrode side of the counter electrode substrate is the display medium. You may arrange | position so that a layer may be opposed, and may be arrange | positioned so that the opposing base material side may oppose a display medium layer. By arranging the counter electrode so as to face the display medium layer, the driving voltage of the electronic paper can be lowered. On the other hand, since the counter electrode is not in direct contact with the display medium layer by arranging the counter substrate side to face the display medium layer, when the display medium layer contains a solvent, the material of the counter electrode is the display medium layer. Therefore, the display quality of the electronic paper in this embodiment can be prevented from deteriorating.

(3) Display medium layer The display medium layer used for this Embodiment is demonstrated. The display medium layer is disposed between the transparent electrode substrate and the counter electrode substrate.

The display medium layer used in this embodiment is appropriately selected depending on the display method of the electronic paper used in this embodiment.
As a display method of electronic paper, known ones can be applied, for example, electrophoresis method, twist ball method, powder movement method (electronic powder fluid method, charged toner type method), liquid crystal display method, thermal method. (Coloring method, light scattering method), electrochromic method, electrowetting method, magnetophoresis method and the like. In the present embodiment, the twist ball method is preferably used.

  In the twist ball method, two-color spherical particles (twist balls) having different charging characteristics are twisted by either one of the two colors by an electric field generated by applying a driving voltage between the counter electrode and the transparent electrode. This is a method for displaying a visual effect by rotating it toward the display surface side of the electronic paper.

As will be described in detail later, the twist ball method performs display by rotating the twist ball dispersed in the elastomer sheet in the solvent layer in the display medium layer, so that the twist ball is fixed to some extent in the display medium layer. Therefore, compared to a display method using an electrophoresis method or the like, that is, a method of performing display by moving charged particles as a display medium in the display medium layer, there is an advantage that problems due to aggregation of the display medium are less likely to occur. There is.
In addition, the display medium layer in the twist ball system has an advantage that a change in electric charge due to moisture in the atmosphere hardly occurs because a constituent material that does not attract moisture such as silicone is used.

  Hereinafter, a display medium layer in the case where the electronic paper used in this embodiment is twist ball electronic paper will be described.

  A display medium layer used for twist ball type electronic paper usually has a twist ball as a display medium and further has a solvent layer containing a solvent.

(A) Twist ball The twist ball used in this embodiment has two hues having different charging characteristics. In addition, the electronic paper in this embodiment functions as a display medium.

  The twist ball used in this embodiment is spherical and has two hues of colored hue and white hue or colored hue and colored hue, and the two different hues have different charging characteristics. There is no particular limitation as long as it is present.

  As such a twist ball, for example, the twist ball manufactured by the microchannel manufacturing method proposed in Japanese Patent Application Laid-Open No. 2004-197083 can be used.

  Here, in the microchannel manufacturing method, the colored continuous phase and the spherical particleized phase are in an O / W type or W / O type relationship with each other, and from the first microchannel in which the colored continuous phase is transferred, Charging characteristics of two-color spherical polymer particles and having a positive (±) polarity by sequentially discharging two colored continuous phases into the spherical particle phase of the flowing medium flowing in the second microchannel A manufacturing method for manufacturing a twist ball which is a spherical particle.

In the above microchannel production method, the polymerizability in a colored continuous phase in which an oily or aqueous fluid medium containing a polymerizable resin component is phase-separated into two colors containing a coloring dye or pigment insoluble in this medium. The resin component is formed with different positively and negatively charged polymerizable monomers, transferred to the first microchannel, and this colored continuous phase is then transferred into the aqueous or oily spherical particleized phase flowing in the second microchannel. In addition, the liquid is sequentially or intermittently discharged. Next, the discharged material discharged into the spherical particle phase is gradually formed into spherical particles during the series of discharge, dispersion, and transfer in the microchannel, and then into spherical particles. A twist ball is appropriately prepared by polymerizing and curing the polymerizable resin component in the particulate phase under at least one of UV irradiation and heating.

  The colored continuous phase is a continuous hue divided into two hues, for example, black and white, red and white, yellow and white, blue and white, green and white, purple and white, etc. There can be mentioned any two hue separation hues selected from “chromatic hue and white hue” or two hue separation hues different in “color hue and color hue”. The colorant for forming such a hue is appropriately selected and used without particular limitation as long as it is insoluble or uniformly dispersed in a fluid dispersion medium containing a polymerizable resin component described later. As the colorant, dyes and pigments can be used.

  As such dyes and pigments, for example, those described in Japanese Patent Application Laid-Open No. 2004-197083 can be used, and description thereof is omitted here.

  The addition amount of the dyes and pigments as these colorants is not particularly limited, and the desired color tone varies depending on the use of the colored particles, and the dispersibility in the above-described colored continuous phase, etc. Thus, in the present embodiment, the amount is 0.1 to 80 parts by weight, preferably 2 to 10 parts by weight, per 100 parts by weight of the total polymerizable resin component that is a polymerization and curing component in the colored continuous phase. It can be suitably suitably added within a range.

  As the polymerizable resin component or polymerizable monomer used in the twist ball, the chargeability of the twist ball depends on the type of the functional group or substituent of the polymerizable monomer used in the twist ball. Mention may be made of monomer species that tend to exhibit (+) chargeability. Therefore, when using at least two or more types of monomers as the polymerizable resin component in the present embodiment, it is preferable to know the tendency to show the (+) and (−) chargeability, A plurality of monomers having the same kind of chargeability tend to be used in combination as appropriate.

  On the other hand, in the polymerizable resin component or polymerizable monomer having in the molecule thereof at least one of at least one functional group and a substituent, examples of the functional group or substituent include a carbonyl group, a vinyl group, a phenyl group, Examples thereof include an amino group, an amide group, an imide group, a hydroxyl group, a halogen group, a sulfonic acid group, an epoxy group, and a urethane bond. In this Embodiment, it can use suitably suitably combining the monomer seed | species which has a functional group or a substituent in such a polymerizable monomer individually or 2 or more types.

  As the (−) chargeable monomer and the (+) chargeable polymerizable monomer, for example, those described in JP-A-2004-197083 can be used. The description in is omitted.

  In the present embodiment, when such a polymerizable monomer at the time of polymerization of the polymerizable resin component after being discharged as a colored continuous phase to the second microchannel already described above is used in combination with another copolymerizable monomer. Depending on the desired chargeability or electrophoretic properties entrusted to the colored resin fine particles, the monomer having a tendency to be charged on the basis of weight is preferably in the range of 1% to 100% in the total monomers, More preferably, it is suitably used as long as it is a copolymer particle with a polymerizable monomer in the range of 5% to 100%, particularly preferably in the range of 10% to 100%, to provide a desired twist ball. it can.

  The twist ball is a spherical monodisperse particle having an average particle diameter in a range of 1.0 μm to 400 μm, preferably in a range of 20 μm to 200 μm, more preferably in a range of 50 μm to 50 μm. It can be suitably prepared within the range of 120 μm. In addition, uniform particles with extremely low variation in average particle diameter are appropriately prepared. In the present embodiment, the degree of uniformity is expressed as a Cv value, and is suitably used as a twist ball of monodisperse particles of 20% or less, preferably 5% or less, more preferably 3% or less.

(B) Solvent layer The solvent layer in this Embodiment comprises a display medium layer with a twist ball.
The solvent layer used in this embodiment is not particularly limited as long as it contains a solvent. The solvent layer is usually composed of a solvent and an elastomer sheet composed of an elastomer material that causes the solvent to swell.
Hereinafter, the solvent used in the solvent layer and the elastomer sheet will be described.

(I) Solvent The solvent used in the present embodiment is used for smooth rotation of the twist ball described above. Moreover, it is usually used by swelling an elastomer sheet described later.

  Such a solvent is not particularly limited as long as it can be smoothly rotated without hindering the rotation of the twist ball. For example, a low polarity solvent is preferably used. Specific examples of the low polar solvent include dimethyl silicone oil, isoparaffinic solvents, and linear paraffinic solvents such as dodecane and tridecane.

(Ii) Elastomer Sheet The elastomer sheet used in the present embodiment is composed of an elastomer material that can be swollen with the solvent. The elastomer sheet is a sheet-like member in which the twist balls are dispersed, and is used by swelling the sheet with the solvent.

A material used for such an elastomer sheet is not particularly limited as long as the twist ball can be dispersed and can be swollen with the solvent.
Examples of the material for such an elastomer sheet include a silicone resin, a slightly crosslinked acrylic resin, a slightly crosslinked styrene resin, and a polyolefin resin.

  In addition, the thickness of the elastomer sheet is not particularly limited as long as the electronic paper in the present embodiment can display a visual effect with a twist ball dispersed in the elastomer sheet. It is preferably in the range of 1000 μm, in particular in the range of 100 μm to 700 μm, particularly in the range of 200 μm to 500 μm. When the thickness of the elastomer sheet is less than the above range, it is difficult to obtain an elastomer sheet in which the twist balls are uniformly dispersed. When the thickness of the elastomer sheet exceeds the above range, This is because the rotation of the ball may be hindered.

(C) Other members The display medium layer in the present embodiment is not particularly limited as long as it contains the display medium, and other necessary members can be added.
Hereinafter, such a member will be described.

(I) Display Medium Layer Base Material In the present embodiment, as shown in FIG. 1B and the like, the display medium layer base material 23c for supporting the display medium layer 23 may be provided. . 1B shows an example in which the display medium layer base material 23c is arranged on both the transparent electrode base material 21 side and the counter electrode base material 22 side of the display medium layer 23. As illustrated in FIG. 7C, the display medium layer base material 23c is either the transparent electrode base material 21 side or the counter electrode base material 22 side (in FIG. 7C, the transparent electrode base material 21). It may be arranged only on the side).
Since the strength of the display medium layer 23 can be improved by having the display medium layer base material 23c, the durability of the electronic paper 20 can be improved.

  Further, by having the display medium layer base material, the display medium layer can be handled as a member separate from the transparent electrode base material and the counter electrode base material. Therefore, by replacing the counter electrode base material, it is possible to display a different second visual effect, and thus it is possible to reuse the display medium layer.

  As the base material for the display medium layer, the same material as that described in the section of the transparent base material described above can be used. Moreover, as the base material for the display medium layer, a base material that can be laminated as described above can be used.

  When the display medium layer base material is included, the display medium layer base material and the transparent electrode base material or the display medium layer base material and the counter electrode base material are bonded together using the display medium layer adhesive layer. The adhesive and pressure-sensitive adhesive used for the display medium layer adhesive layer can be the same as those used for the adhesive layer described above. In addition, the display medium layer adhesive layer may be configured using a re-peelable adhesive. Here, “removable” means that when the display medium layer base material and the transparent electrode base material or counter electrode base material are bonded and then peeled, the display medium layer base material and the transparent electrode base material or This means that the counter electrode substrate can be peeled off without being damaged. Examples of such adhesives include acrylic adhesives or adhesives, silicone adhesives or adhesives, natural rubber adhesives or adhesives, ethylene-vinyl acetate (EVA) adhesives or adhesives. And urethane-based pressure-sensitive adhesives or adhesives.

  In addition, the display medium layer base material and the transparent electrode base material, and the display medium layer base material and the counter electrode base material may be bonded together by lamination.

(Ii) Sealing agent A sealing agent is used when sealing a display medium layer, and is normally arrange | positioned at the edge part of the base material adjacent to a display medium layer.
Such a sealing agent is not particularly limited as long as the display medium layer can be sealed together with the base material adjacent to the display medium layer so that the leakage of the solvent in the display medium layer can be prevented. Specifically, since it can be the same as the sealing agent used for general electronic paper, description here is abbreviate | omitted.

  The “base material adjacent to the display medium layer” specifically refers to either a transparent electrode base material, a counter electrode base material, or a display medium layer base material used as necessary.

(D) Display medium layer The thickness of the display medium layer used in the present embodiment is not particularly limited as long as the second visual effect can be displayed using the display medium. In the case of having a twist ball, it is preferably in the range of 50 μm to 1000 μm, in particular in the range of 100 μm to 700 μm, particularly in the range of 200 μm to 500 μm. If the thickness of the display medium layer is less than the above range, it may be difficult for the twist ball to rotate in the desired direction. If the thickness of the display medium layer exceeds the above range, This is because even if a drive voltage is applied between the back electrode and the transparent electrode, the twist ball is less likely to react electrically and it may be difficult to display the second visual effect.

In addition, the sealing method of the display medium layer used in this embodiment is not particularly limited as long as it can be sealed so as not to cause solvent leakage from the display medium layer. Examples thereof include a method of sealing by arranging a sealing agent at the end of the substrate adjacent to the layer, and a method of sealing by laminating using a material that can be laminated on the adjacent substrate.
In the present embodiment, it is more preferable to seal the display medium layer by laminating.
Compared with a sealing method using a sealant, it is possible to more suitably prevent the solvent from leaking from the display medium layer, and the display area can be widened.

(4) Method for Forming Electronic Paper The method for forming electronic paper used in this embodiment can be the same as the method for forming general electronic paper, and thus description thereof is omitted here.

3. Other Configurations The information display medium of the present embodiment is not particularly limited as long as it has the above-described visual effect processing substrate and electronic paper, and other necessary configurations can be appropriately selected and added. it can.

(1) Solar cell The information display medium of this Embodiment may have a solar cell. In this case, the solar cell can be arranged at an arbitrary position according to the use of the information display medium. In this Embodiment, as shown in FIG. 6, the solar cell 40 is arrange | positioned adjacent to the electronic paper 20, the opposite side to the display medium layer 23 side of the transparent electrode base material 21 of the electronic paper 20, and the sun The visual effect processing substrate 10 is preferably disposed on the surface of the battery 40. By setting it as the said structure, the electric power generated with the solar cell can be supplied to electronic paper. Further, in the case where the visual effect processing base material is composed only of the base material, or in the case where the visual effect processing base material is composed of the base material and the visual effect layer, for example, the visual effect processing layer is formed on the entire surface of the visual effect processing base material. In such a case, the electronic paper and the solar battery can be shown integrally, and an information display medium having a good design (designability) can be obtained.
6A and 6B are explanatory diagrams showing another example of the information display medium according to the present embodiment, and FIG. 6A illustrates the configuration of the information display medium according to the present embodiment. FIG. 6B is a schematic diagram, and FIG. 6B is a cross-sectional view of the information display medium shown in FIG. Reference numerals not described in FIGS. 6A and 6B can be the same as those described with reference to FIGS. 1A and 1B, and thus description thereof is omitted here.

  The solar cell is not particularly limited as long as it can supply desired power to the electronic paper, and can be appropriately selected according to the use of the information display medium of the present embodiment. Sensitive solar cells, organic thin film solar cells, amorphous solar cells, silicon solar cells and the like can be used. In the present embodiment, it is particularly preferable to use a dye-sensitized solar cell. This is because the dye-sensitized solar cell can efficiently generate power even in an environment with a relatively small amount of light such as a fluorescent lamp.

A dye-sensitized solar cell is usually disposed between a pair of solar cell electrode base materials having a base material and an electrode, and both solar cell electrode base materials, and is formed on one solar cell electrode base material. And a photoelectric conversion functional layer. At least one of the electrode base materials for solar cells has transparency. The photoelectric conversion functional layer is usually composed of a porous layer and an electrolyte layer containing metal oxide semiconductor fine particles having a sensitizing dye supported on the surface. The electrolyte layer may have any electrolyte such as liquid, solid, and gel.
About the dye-sensitized solar cell used for this Embodiment, it can be set as the thing similar to a well-known thing, For example, the thing as described in patent 5140938 etc. is mentioned.

(2) Adhesive layer An adhesive layer is formed between the transparent electrode base material of an electronic paper, and a visual effect processing base material, and is used in order to bond both together.
The material, thickness, formation method, and the like used for the adhesive layer can be the same as those described in the above-mentioned section of the adhesive layer for a display medium layer, and thus description thereof is omitted here.

(3) Frame The information display medium according to the present embodiment usually has a frame for supporting the above-described components. Such a frame is not particularly limited as long as it can support the visual effect processing base material and the electronic paper and can observe the display surface of the visual effect processing base material and the electronic paper. Usually, the electronic paper has a window having a size corresponding to a region where display is performed. In the present embodiment, the frame may be capable of fixing the above-described visual effect processing base material. Examples of such a frame include a frame having a configuration in which a visual effect processing base material is fitted into a part of the frame and a frame having a configuration in which the visual effect processing base material is fixed to a frame portion using a bolt or the like. Can do.

  The configuration, material, and the like of the frame can be appropriately selected according to the use of the information display medium of the present embodiment.

  The frame preferably has a fixing portion for fixing the information display medium of the present embodiment to the installation location. The fixing unit is not particularly limited as long as the information display medium according to the present embodiment can be fixed at a desired installation location, and can be appropriately selected according to the use of the information display medium according to the present embodiment. . Examples of the fixing portion include a magnet, a bolt and a nut, and the adhesive layer described above.

(4) Sensor The information display medium of the present embodiment may include a sensor. In the case of including a sensor, display can be performed by changing the second visual effect of the electronic paper by sensing the distance to the observer or by touching the display surface of the observer.
As such a sensor, a well-known sensor can be used according to the use etc. of the information display medium of this Embodiment. For example, a human sensor, a touch panel sensor, and the like can be given.

(5) Control Unit The information display medium according to the present embodiment usually has a control unit that controls driving of the display medium of electronic paper. Since the control unit can be the same as that used in general electronic paper, description thereof is omitted here.

4). Method for Producing Information Display Medium The method for producing the information display medium of the present embodiment is not particularly limited as long as the information display medium having the above-described configuration can be formed, and a general printed matter production method and electronic paper It can be the same as that of the manufacturing method of this.

Hereinafter, although an example of the manufacturing method of the information display medium of this Embodiment is demonstrated using figures, it is not limited to this.
7A to 7C are process diagrams showing an example of a method for manufacturing the information display medium according to the present embodiment.
7A to 7C illustrate an example in which twist ball electronic paper is formed as electronic paper.
In the method of manufacturing the information display medium of the present embodiment, first, as shown in FIG. 7A, a transparent electrode base material 21, a counter electrode base material 22, a twist ball 23a, a solvent layer 23b, and a transparent electrode base material A display medium layer base material 23c to be arranged on the 21 side is prepared. The transparent electrode base material 21 and the display medium layer 23 can be the same as those described with reference to FIGS. 1A and 1B, and thus description thereof is omitted here.
In FIG. 7A, the counter electrode substrate 22 includes a counter substrate 22a, a counter electrode insulating layer 22′b disposed on the counter substrate 22, and a counter electrode insulating layer 22′b. The counter electrode 22b formed above, the counter electrode via 22c having a via hole formed on the counter electrode 22b so as to overlap the counter electrode 22b in plan view, and the counter electrode via 22c. The wiring insulating layer 22d disposed so as to surround the via hole, the counter electrode wiring 22e formed on the wiring insulating layer 22d, and the counter electrode wiring 22e disposed on the counter electrode wiring 22e in plan view Wiring vias 22f having via holes formed so as to overlap with each other, and conductive formed by injecting a conductive paste into the via holes, and electrically connecting the counter electrode 22b and the counter electrode wiring 22e. It shows an example having a 22 g, and a protective sheet 22h disposed on the outermost surface of the conductive layer 22 g. FIG. 7A shows an example in which the spacer 22i is arranged in a region where the wiring insulating layer 22d and the counter electrode wiring 22e are not arranged.
Next, the transparent electrode base material 21 and the display medium layer base material 23c are bonded together.
Next, as illustrated in FIG. 7B, the twisting ball 23a and the solvent layer 23b are arranged between the counter electrode base material 22 and the display medium layer base material 23c, so that the counter electrode base material 22 and the display medium are arranged. The display medium layer 23 is formed by sealing the twisting ball 23a and the solvent layer 23b by laminating the layer base material 23c. Electronic paper is formed through the above steps.
Next, as shown in FIG.7 (c), by preparing the visual effect processing base material 10, and bonding together via the adhesive layer etc. (not shown) to the transparent electrode base material 21 side of the electronic paper 20, The information display medium 100 of the present embodiment can be manufactured.

5). Applications The information display medium according to the present embodiment uses, for example, a wood-grained or marble-like wall as a light-transmissive member for the first visual effect, and is embedded in or hung on the wall. It is used for applications such as watches and signs that are assimilated with the surrounding design (design). It also displays the first visual effect, which is usually a design design such as color, pattern, and texture of the visual effect processing base material, and has specific meanings such as letters and pictures as necessary for emergency guidance. It is used also for the purpose of displaying the second visual effect that is the information it has.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

Hereinafter, the present invention will be described with reference to examples.
100 μm thick polyethylene terephthalate (PET) film with adhesive (PET100 A PL Thin 11BL manufactured by Lintec Co., Ltd.), low temperature drying type conductive paste (D-550 manufactured by Fujikura Kasei Co., Ltd.), and 12 μm thick A laminated film of vapor-deposited aluminum (Al) and PET (# 12 VM-PET1510, manufactured by Toray Film Processing Co., Ltd.), a 12 μm thick polyester film double-sided adhesive tape (No.705, manufactured by Tokyo Film Service Co., Ltd.), 55 μm thick laminated sheet PET and CPP laminated film (Panac Co., Ltd. PET / CPP 55 μm), 125 μm thick transparent electrode ITO and PET laminated film (Tokyo Nakai Corporation RT-1T), and thickness 25μm thick double-sided acrylic adhesive tape (OPTERIA MO-3012C manufactured by Lintec Corporation), 300μ thick after being swollen with silicone oil m twist ball sheet (Soken Chemical Co., Ltd. twist ball sheet (black and white) (a type of electronic paper)), cutting machine (Graphtech Co., Ltd. CE-5000), and the first visual effect printed And an inkjet transparent film with an agent.

<Preparation process of counter electrode base material>
(Preparation of laminate of counter electrode and insulating layer for counter electrode)
Thickness on the PET surface of a laminated film of 12 μm thick Al and PET (# 12 VM-PET1510 manufactured by Toray Film Processing Co., Ltd.) (laminate of counter electrode and counter electrode insulating layer (laminate for counter electrode)) The release paper (polyester film) on one side of a 12 μm thick polyester film double-sided adhesive tape (No. 705 manufactured by Tokyo Film Service Co., Ltd.) (adhesive layer) was peeled off and bonded.

  The deposited Al surface of the laminate for the counter electrode, the adhesive layer, and the release paper laminate was cut to the adhesive layer by a cutting machine. At this time, the gap between the counter electrode patterns was cut at 0.5 mm, and unnecessary portions of the deposited Al were removed. Thus, a display electrode pattern (a laminated body for a counter electrode having a shape corresponding to the second visual effect) was formed.

(Preparation of counter electrode via)
Cut the PET surface of the PET film with adhesive 100μm thick (PET100 A PL Thin 11BL manufactured by Lintec Co., Ltd.) to the adhesive layer with a cutting machine. A counter-electrode via was formed by forming an electrode extraction via hole (the size of the via hole was approximately 2 mm). The obtained counter electrode via was bonded to the counter electrode surface of the display electrode pattern described above.

(Production of wiring laminate and spacer)
A laminated film of the above-mentioned deposited Al and PET, an adhesive layer arranged on the PET surface, and a laminate of release paper are prepared, and the cutting from the deposited Al surface to the adhesive layer is cut by a cutting machine, and the counter electrode wiring and A laminate of wiring insulating layers (wiring laminate) was formed. The wiring laminate was formed so as to surround the via hole of the counter electrode via. In addition, a spacer was formed of the same material as the wiring laminate, and the spacer was arranged on the same surface as the wiring laminate in the counter electrode via so as not to be electrically connected to the counter electrode wiring.

(Preparation of wiring vias)
Cut the PET surface of the 100μm thick adhesive-coated PET film to the adhesive layer with a cutting machine, which has the same size as the transparent electrode substrate described later, and use the wiring via hole (the size of the via hole is about 2mm) To form a wiring via. The obtained wiring via was bonded to the surface of the counter electrode wiring of the wiring laminate.

(Connection of counter electrode and counter electrode wiring)
The counter electrode via side of the counter electrode via to which the counter electrode is pasted and the counter electrode wiring side of the wiring via to which the counter electrode wiring is bonded are pasted together, and a conductive paste is applied to the via hole to oppose The electrode and the counter electrode wiring were connected.
After the conductive paste was dried and solidified, a PET film with an adhesive layer having a thickness of 100 μm was pasted on the wiring via to insulate the conductive paste.

(Preparation of counter electrode substrate)
The release paper of the adhesive layer disposed on the counter electrode insulating layer of the counter electrode laminate is peeled off, and a 55 μm thick laminate sheet (laminate of PET and CPP) (manufactured by Panac Co., Ltd.) (opposing substrate) The PET surface of was bonded together.
The counter electrode base material was obtained by the above process.

<Lamination process of transparent electrode base material and base material for display medium layer>
As a transparent electrode base material, a laminated film of ITO and PET with a thickness of 125 μm (Tokyo Nakai Corporation RT-1T) was prepared, and an acrylic double-sided adhesive tape with a thickness of 25 μm on the ITO surface (manufactured by Lintec Corporation) The release film (PET film 38 μm) on one side of OPTERIA MO-3012C) was peeled off, and bonded so that the ITO surface protruded 5 mm or more from the adhesive surface.
Next, the release film on the opposite surface was peeled off, and the PET surface of a 55 μm thick laminate sheet (laminated body of PET and CPP) (manufactured by Panac Co., Ltd.) (base material for display medium layer) was bonded.

<Sealing process of display medium layer>
The obtained counter electrode base material, and a laminate of the transparent electrode base material and the display medium layer base material were superposed on each CPP surface, and three sides were heat-sealed to prepare a bag.

  Insert a 300μm thick twist ball sheet (manufactured by Soken Chemical Co., Ltd.) swollen with silicone oil into the above-mentioned bag, heat-seal the opening of the bag to prevent air bubbles, and enclose the twist ball sheet As a result, twisted ball electronic paper was obtained.

<Arrangement process of electronic paper and visual effect processing base material>
An information display medium was obtained by laminating a transparent film such as an inkjet layer with an adhesive layer printed with a predetermined visual effect on the transparent electrode substrate side of the electronic paper.

DESCRIPTION OF SYMBOLS 1 ... 1st visual effect 2 ... 2nd visual effect 10 ... Visual effect processing base material 11 ... Base material 12 ... Visual effect layer 20 ... Electronic paper 21 ... Transparent electrode base material 21a ... Transparent base material 21b ... Transparent electrode 22 ... Opposite Electrode base material 22a ... Counter base material 22b ... Counter electrode 23 ... Display medium layer 100 ... Information display medium

Claims (2)

A visual effect processing base material that has optical transparency and has been subjected to visual effect processing;
Transparent electrode substrate having transparent substrate and transparent electrode formed on transparent substrate, counter substrate and counter electrode substrate having counter electrode formed on counter substrate, and transparent electrode base An electronic paper having a display medium layer disposed between a material and the counter electrode base material and containing a display medium;
The visual effect processing substrate is disposed on the side opposite to the display medium layer side of the transparent electrode substrate of the electronic paper;
The visual effect processing base material includes a base material and a visual effect layer that is formed on the base material and has optical transparency and a first visual effect, and is displayed on the visual effect layer and the electronic paper. 2 are arranged so that the visual effect overlaps in plan view.
The information display medium , wherein the visual effect layer itself displays a pattern as the first visual effect, and further displays the second visual effect through the visual effect layer.   The information display medium has a solar cell disposed adjacent to the electronic paper, and the visual effect is provided on the side of the transparent electrode substrate opposite to the display medium layer side of the electronic paper and on the surface of the solar cell. The information display medium according to claim 1, wherein a processing substrate is disposed.

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