WO2015159666A1

WO2015159666A1 - Multiple image display device

Info

Publication number: WO2015159666A1
Application number: PCT/JP2015/059058
Authority: WO
Inventors: 進竹川
Original assignee: コニカミノルタ株式会社
Priority date: 2014-04-15
Filing date: 2015-03-25
Publication date: 2015-10-22
Also published as: JPWO2015159666A1

Abstract

The problem addressed by the present invention is to provide a multiple image display device that can display two or more design patterns, is provided with flexibility, is light weight, and has superior transportability and work efficiency. A multiple image display device has a multiple image display sheet (2), which has a planar design sheet (3) that forms pattern A (5) on a base sheet and a planar surface light emitting panel (4) that displays a pattern B by light emission, and a power supply means. The pattern A and the pattern B are each displayed independently.

Description

Multi-image display device

The present invention relates to a multi-image display device having flexibility to display a plurality of images having different designs according to changes in the external environment.

¡Various display methods are used to display various information. Outdoors, for example, on roads, especially highways, information boards that display destinations, various information display boards (signboards) such as accident or traffic jam information, and retroreflective display bodies (for example, reflective tapes) A line-of-sight guidance display method is widely used that is bonded to a guard rail or the like located in a curve region to guide the driver's line of sight. Design sheets such as advertisements are also provided on guardrails on general roads, fences and walls on construction sites, and outer walls of buildings.

On the other hand, many sign boards are used indoors for providing product information on boards printed on decorative panels such as acrylic and for displaying evacuation routes.

In recent years, these various information display boards (sign boards) have been widely used light-emitting display devices that incorporate a light-emitting light source and display messages by light emission.

A general light-emitting sign board has an illuminating device on the back side (back side) of the display board on which displayed information is displayed as viewed from the observer. As a lighting device, a box-shaped structure in which a reflector (reflector), a light source such as a fluorescent lamp, and a scattering plate are arranged in this order from the back side to the front side is common, and the inner surface of the box-shaped structure is particularly light. The white color is used to ensure the extraction efficiency. Desired display information is formed on the front side of the lighting device having a box-shaped structure by printing, application, labeling or sticking.

In recent years, surface light emitters that use electroluminescent elements, that is, electroluminescent elements (hereinafter also referred to as EL elements) as light sources, have been actively developed as lighting devices having a box-shaped structure. This surface light emitter is a surface light source that emits light almost uniformly in the surface, and has excellent characteristics such as low heat generation and thinness. Therefore, it is expected as a next-generation illumination that replaces conventional incandescent lamps and fluorescent lamps.

For example, as an example of a surface light-emitting element, a decorative light-emitting body having a decoration layer formed of a curable ink on a substrate surface on the light extraction side of an organic electroluminescence element (hereinafter also referred to as an organic EL element) is disclosed. (For example, refer to Patent Document 1). Moreover, a light-emitting pattern board, a pattern light emitting display device including an organic electroluminescence element plate on the back side of the pattern board and a light-transmissive back plate is disclosed (for example, see Patent Document 2). .)

Also, a sign is disclosed that is installed on a road or the like in which an organic electroluminescence element is used as a surface light emitter and a display portion having an image pattern is laminated thereon (see, for example, Patent Document 3).

However, in the methods disclosed in Patent Documents 1 to 3, an organic electroluminescence element or the like is simply used as a surface-emitting illumination member, and information to be displayed is expressed by a pattern or printed matter arranged on the surface. This is a method that only displays one message.

In addition, in the methods disclosed in Patent Documents 1 to 3, the organic electroluminescence element has high energy consumption efficiency, high brightness, no heat generation, and excellent visibility, but the organic electroluminescence element is It is difficult to say that the characteristics of the organic electroluminescence element which is disposed inside the storage box or the like and is flexible with a thin film are fully utilized.

For this reason, these symbol light emitting display devices are extremely heavy and are inferior in workability because they require reinforcement of the holding member at the place of installation and construction time. In addition, these methods are mainly means for displaying a sign of a road traffic sign and the like, and are extremely inorganic display methods and are difficult to say as display means for giving comfort to the driver.

Further, in Patent Document 4, an electroluminescent lamp composed of a transparent electrode drawn with an electrode, a light emitting layer, and a conductive ink on a base material, and the drawn transparent electrode does not emit light when no power is supplied. A method is disclosed in which a transparent electrode emits light when energized and an image drawn with conductive ink can be visually recognized. However, the method disclosed in Patent Document 4 is also a method of displaying only a single printed image, as described above, and does not have a function of displaying a plurality of images.

International Publication No. 2011/048956 JP 2013-221379 A JP 2013-257556 A JP 2004-273349 A

The present invention has been made in view of the above problems, and its solution is to display symbols of two or more designs corresponding to environmental information and other information to be installed, and to be flexible. And providing a multi-image display device that is lightweight and excellent in transportability and workability during installation.

As a result of diligent investigations in view of the above problems, the present inventor has obtained a multi-image display having a planar design sheet that forms the pattern A on the base sheet and a planar surface-emitting panel that displays the pattern B by light emission. A multi-image display device having a sheet and power supply means and displaying the symbol A and the symbol B independently of each other, displays a plurality of appropriate symbols according to the situation. It has been found that a multi-image display device can be provided that is flexible, lightweight, excellent in transportability and workability during installation, and has led to the present invention.

That is, the above-mentioned problem of the present invention is solved by the following means.

1. A multi-image display sheet having a planar design sheet that forms a pattern A on a base sheet, a planar surface-emitting panel that displays a pattern B by light emission, and a multi-image display device having a power supply means,
A multi-image display device that independently displays a symbol A displayed by the design sheet and a symbol B displayed by light emission of the surface light emitting panel.

2. The multi-image display device according to item 1, wherein the planar design sheet is a flexible design sheet.

3. 3. The multi-image display device according to claim 1, wherein the planar surface light emitting panel is a flexible surface light emitting panel.

4. The multi-image according to any one of claims 1 to 3, wherein the multi-image has an external information sensor and controls light emission of the surface-emitting panel according to external information acquired by the external information sensor. Display device.

5. The multi-image according to any one of claims 1 to 4, wherein an image displayed by the multi-image display sheet is displayed by a combination of the symbol A and the symbol B. Display device.

6. In the design sheet, the pattern A formed on the base material sheet is provided on the viewing surface side surface, the viewing surface side back surface, or the base material sheet of the base material sheet. The multi-image display device according to any one of items 5 to 5.

7. The multi-image display device according to any one of claims 1 to 6, further comprising two or more surface emitting panels on the multi-image display sheet.

8. The multi-image according to any one of claims 1 to 7, wherein two or more of the surface light emitting panels are provided, and the pattern B to be displayed is different depending on each surface light emitting panel. Display device.

9. The first to eighth items, wherein the multi-image display sheet includes two or more surface light emitting panels, and the two or more surface light emitting panels emit light under control of different light emission conditions. The multi-image display device according to any one of the above.

10. 10. The surface emitting panel has a white light emitting function, a light emitting function of each single color having a different hue, or a toned light emitting function. Multi-image display device.

11. The design B of the design sheet has the viewing surface side surface of the base sheet or the base sheet and the surface of the base sheet opposite to the viewing side is displayed by light emission. Correspondingly, a mask member for shielding light emission in a specific region is provided, and the multi-image display device according to any one of items 1 to 10 is provided.

12. The light emitting member constituting the light emitting panel has a light emitting part and a non-light emitting part, and the symbol B is constituted by the light emitting part and the non-light emitting part. The multi-image display device according to any one of the above.

13. The multi-image display device according to any one of Items 1 to 12, wherein the light-emitting panel includes a light-scattering film on a light-emitting member.

14. The multi-image display device according to any one of items 1 to 13, wherein a light-emitting member constituting the surface light-emitting panel is an organic electroluminescence element.

15. The external information for controlling the light emission of the surface light emitter is light information, sound information, human body detection information, vehicle detection information, smoke detection information, heat detection information, earthquake detection information, moisture detection information, or time information. The multi-image display device according to any one of Items 4 to 14, which is a feature.

16. The multi-image display device according to any one of items 1 to 15, wherein the design sheet is flame retardant or non-flammable.

17. The multi-image display device according to any one of items 1 to 16, wherein the design sheet has a waterproof function, a sound absorbing function, or a photocatalytic function.

By the above means of the present invention, it is possible to display two or more designs corresponding to the environmental information and other information to be installed, and it has a planar shape, is lightweight, and is transported at the time of installation. A multi-image display device excellent in performance and workability can be provided.

The technical features of the multi-image display device having the configuration defined in the present invention and the mechanism of its effects are as follows.

In product information images using various information display devices (signboards) installed on conventional roads and boards printed on decorative boards, as described above, only a single fixed image is displayed. In addition, these information display devices are generally heavy and have a problem that the transportability to the place of installation and the construction work take time, and the workability is poor.

The multi-image display device of the present invention has been made in view of the above-described problems of the prior art, and the structural features thereof are a planar design sheet in which a pattern A is formed on a base sheet, and light emission. Is provided with a multi-image display sheet having a planar surface light emitting panel for displaying the design B, and the design A displayed by the design sheet and the design B displayed by the light emission of the surface light emitting panel are independently displayed. be able to. That is, the display of the design A by the design sheet and the design B formed by emitting light from the surface light emitting panel is controlled by various situations. As a control factor of the pattern A and the display of the pattern B, or the pattern that displays the pattern A and the pattern B at the same time, for example, the control is performed in the daytime and at night. When the design A is displayed on the design sheet and the illuminance decreases at night, the surface light emitter panel emits light, and the design B with a different specification from the design A is displayed, thereby displaying the image display device. It is possible to impart image versatility. In a normal state, when a design sheet is used, for example, a floor tile pattern A is displayed, and when a human approach is detected by a human body sensor or a pressure sensor installed on the floor surface, A method of displaying a message etc. by causing the illuminator panel to emit light, or a method of displaying an arrow mark indicating the route of the evacuation route on the surface illuminator panel when the sensor receives an earthquake early warning, etc. Can be applied in a wide range of fields.

In the present invention, it is preferable that at least one of the planar design sheet and the planar surface light emitting panel has flexibility, more preferably the planar design sheet and the planar surface light emitting panel, It is a preferable aspect that all have a flexible structure.

The multi-image display device of the present invention is a multi-image composed of a planar design sheet, preferably a flexible design sheet, and a planar surface-emitting panel, preferably a flexible surface-emitting panel. The display sheet is applied so that the surface emitting panel is not damaged due to cracks at the time of installation, and can be stacked in a roll and transported to the installation location in a compact state. Since the multi-image display sheet is flexible, there are few restrictions on the shape of the installation location, and the degree of freedom in the shape of the installation location, such as curved members (convex surfaces, concave surfaces), cylindrical members, etc. in addition to flat members Becomes higher. Therefore, on soundproof panels with curved surfaces on expressways, guard rails with irregularities, fences and soundproof walls on construction sites, outdoor walls of buildings, etc., restaurants and hotel banquet halls, stores, corridors that are attractive for various productions It can be installed according to its purpose, such as wall surfaces, pillars, floors, ceilings, etc., and an attractive indoor space can be designed.

Overall configuration diagram showing an example of the configuration of a multi-image display device Schematic sectional view showing an example of the configuration of the multi-image display device Schematic sectional view showing an example of the formation position of design A in the design sheet Schematic sectional view showing another example of the formation position of the pattern A in the design sheet Schematic sectional view showing another example of the formation position of the pattern A in the design sheet Schematic sectional view showing an example of the configuration of the light emitting image portion of the multi-image display device Schematic sectional view showing another example of the configuration of the light emitting image portion of the multi-image display device Schematic diagram of a state where flexible multi-image display devices are stacked in a roll shape during transportation Embodiment 1 of multi-image display device of the present invention: Schematic diagram showing an example installed on a soundproof panel of a highway Embodiment 2 of the multi-image display device of the present invention: Schematic diagram showing an example installed on a soundproof wall of an expressway Embodiment 3 of the multi-image display device of the present invention: a schematic diagram showing an example of the configuration of symbol A and symbol B displayed in the multi-image display device of the present invention Embodiment 4 of the multi-image display device of the present invention: a schematic diagram showing an example of the symbol configuration of the multi-image display device of the present invention on a highway Embodiment 5 of the multi-image display apparatus of the present invention: Schematic diagram showing an example of a display pattern at the time of non-light emission of the symbol B of the evacuation route displayed on the floor tile installed on the floor in the room Embodiment 5 of the multi-image display device of the present invention: Schematic diagram showing an example of a display pattern at the time of light emission of the pattern B of the evacuation route displayed on the floor tile installed on the floor in the room Embodiment 6 of the multi-image display device of the present invention: A schematic diagram showing an example of a display pattern at the time of non-light emission of the pattern B in the art tile installed on the indoor floor Embodiment 6 of the multi-image display device of the present invention: Schematic diagram showing an example of a display pattern at the time of light emission of the pattern B in the art tile installed on the floor in the room Embodiment 7 of the multi-image display device of the present invention: Schematic diagram showing an example in which a plurality of types of symbols B are arranged on a wide multi-image display sheet installed on the floor in the room Embodiment 8 of the multi-image display device of the present invention: Schematic diagram showing an example of a non-light-emitting pattern B of a message sheet having a human sensor installed on the indoor floor Embodiment 8 of the multi-image display device of the present invention: Schematic diagram showing an example at the time of light emission of the symbol B of the message sheet provided with the human sensor installed on the floor in the room Schematic sectional view showing an example of the configuration of an organic electroluminescence element which is a representative example of a light emitting source of a surface emitting panel Schematic sectional view showing another example of the configuration of the organic electroluminescence element which is a representative example of the light emitting source of the surface light emitting panel

The multi-image display device of the present invention includes a multi-image display sheet having a planar design sheet that forms a pattern A on a base sheet, a planar surface-emitting panel that displays the pattern B by light emission, and a power supply unit. And the design A displayed by the design sheet and the design B displayed by light emission of the surface-emitting panel are displayed independently of each other. This feature is a technical feature common to the inventions according to claims 1 to 17.

As an embodiment of the present invention, the planar design sheet is a flexible design sheet, or the planar surface light emission, from the viewpoint that the effects of the present invention can be further exhibited. It is preferable that the panel is a flexible surface emitting panel from the viewpoint of being able to provide a more flexible multi-image display device and capable of displaying depending on the situation in various situations.

In addition, external information sensors provided and external information obtained by installed external information sensors, such as light (eg, illuminance) information, sound information, human body detection information, vehicle detection information, smoke detection information, heat detection information, earthquake detection Based on the information, moisture (for example, rainfall) sensing information, or time information, the light emission of the surface light emitting panel is controlled to display the pattern B, and an appropriate image display is performed according to each situation. This is a preferred embodiment from the viewpoint of achieving the above.

Further, the multi-image display sheet simultaneously displays the pattern B generated by the light emission of the surface light emitting panel and the pattern A displayed by the design sheet, and displays a composite image, thereby realizing a variety of designs. It is preferable at the point which can do.

Further, in the design sheet, it is a preferable aspect that the pattern A formed on the base sheet is provided on the viewing surface side surface, the viewing surface side rear surface, or the base sheet.

In addition, two or more surface light emitting panels are provided on the multi-image display sheet, the pattern B displayed on the two or more surface light emitting panels has a different configuration, or each surface light emitting panel. However, it is preferable to control to different light emission conditions, for example, conditions for light emission depending on a time difference, from the viewpoint of displaying various kinds of light emission images.

In addition, the surface light emitting panel has a white light emitting function, a single color light emitting function having different hues, or a toned light emitting function. This is a preferred embodiment in that light can be emitted.

In addition, the design A of the design sheet is displayed on the viewing surface side surface of the base sheet or in the base sheet, and is displayed on the surface opposite to the viewing side of the base sheet by light emission. Corresponding to B, it is preferable that a mask member for shielding light emission in a specific region is provided in that a high-quality image can be displayed.

Further, the light emitting member constituting the light emitting panel has a light emitting portion and a non-light emitting portion, and the design B is constituted by the light emitting portion and the non-light emitting portion, so that a high-quality image can be displayed. This is preferable.

In addition, it is preferable that the light-emitting panel has a light-scattering film on the light-emitting member because unnecessary reflected light can be prevented during observation.

In addition, it is preferable that the light emitting member constituting the surface light emitting panel is an organic electroluminescence element (OLED), which can be a long-life and low power consumption surface light emitter.

In addition, it is preferable that the design sheet is flame retardant or non-flammable, or has a waterproof function, a sound absorbing function, or a photocatalytic function, which can be a design sheet with higher added value. It is an aspect.

Hereinafter, the present invention, its components, and modes and modes for carrying out the present invention will be described in detail with reference to the drawings. In the following description, “˜” is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value. Moreover, in the following description, the number described in parentheses after each component represents the reference numeral of each component described in each figure.

<Outline of configuration of multi-image display device>
The multi-image display device of the present invention includes a multi-image display sheet having a planar design sheet that forms a pattern A on a base sheet, a planar surface-emitting panel that displays the pattern B by light emission, and a power supply unit. And the symbol A displayed by the said design sheet and the symbol B displayed by light emission of the said surface emitting panel are each displayed independently. Furthermore, a preferred embodiment is a method having an external information sensor and controlling the light emission of the surface light emitting panel according to the external information obtained by the external information sensor.

In the following description, as a planar design sheet on which the pattern A is formed, a preferred embodiment is a design sheet having flexibility, and also as a planar surface light emitting panel that displays the pattern B by light emission, A preferred embodiment is a surface light emitting panel having flexibility. Hereinafter, as a representative example, a flexible design sheet having a pattern A and a surface light emitting panel having flexibility will be described.

First, the schematic configuration of the multi-image display device of the present invention will be described.

FIG. 1 is an overall configuration diagram showing an example of the configuration of the multi-image display device of the present invention.

The structure of the representative multi-image display device (1) of the present invention shown in FIG. 1 is that a multi-image display sheet (2) that displays a pattern A and a pattern B and light emission of the pattern B by a surface light emitting panel (4). An external information sensor (6) for obtaining various light emission control information for controlling the light emission, and a light emission control unit (7) for controlling light emission of the surface light emitting panel (4) according to the obtained external information. The multi-image display sheet (2) and the light emission control unit (7) are connected by a waterproof connector (10), and the surface light-emitting panel (4) provided in the multi-image display sheet from the AC / DC power supply unit (9). ) Is supplied with light for driving light emission. As the waterproof connector (10), the multi-image display device (1) of the present invention is installed in an outdoor environment and is often exposed to wind and rain, etc., and has a waterproof specification in order to prevent electrical troubles caused by them.

As shown in FIG. 1, the multi-image display sheet (2) is made of a planar material, preferably a flexible material, and is independent from the design sheet (3) on which the pattern A (5) is drawn. One or more surface emitting panels (4) for displaying the pattern B are arranged at predetermined positions in an island shape. Each surface emitting panel (4) is configured to be supplied with electric power from the AC / DC power supply unit (9) via the wiring (8).

Next, a specific configuration of the multi-image display device of the present invention will be described.

FIG. 2 is a schematic sectional view showing an example of the configuration of the multi-image display device of the present invention.

In FIG. 2, the upper side of the figure is the viewing side. The multi-image display device (1) has a configuration in which a design sheet (3) and a surface light emitting panel (4) for displaying a pattern B are laminated. The design sheet (3) is provided with a design A (5) on the base material sheet (11) having flexibility. In FIG. 2, the design A (5) is formed on the upper surface side of the base material sheet (5). An example is shown. In addition, a predetermined surface of the design sheet (3) has a flexible surface-emitting panel (4) for displaying the design B, and there may be one or as shown in FIG. However, in consideration of the variety of light-emitting images, a configuration in which two or more surface light emitters are disposed on a single multi-image display sheet is preferable. At this time, each surface emitting panel (4) may have the same design or different designs (illustrated in FIG. 13 described later).

Moreover, each surface light emission panel (4) is connected to the light emission control part (7) by the wiring (8). From the external information sensor (6) attached, external information such as light (illuminance) information, sound information, human body detection information, vehicle detection information, smoke detection information, heat detection information, earthquake detection information, water (rain) Based on the sensing information or the time information, the light emission of the surface light emitting panel (4) is controlled to display the symbol B.

Since the multi-image display device of the present invention having the above-described configuration is composed of a flexible design sheet and a flexible surface-emitting panel, the surface-emitting panel may be damaged due to cracks or the like during installation. In addition, since it is not a configuration in which a metal casing or the like is housed, it can be stacked in a roll shape and transported to a setting place in a compact state, and is excellent in installation ease.

In addition, since the multi-image display sheet according to the present invention has flexibility, there are few restrictions on the shape of the installation place, and in addition to a flat member, a curved member (convex surface, concave surface), a cylindrical member, etc. are installed. The degree of freedom of the shape of the place is increased. Therefore, on soundproof panels with curved surfaces on expressways, guard rails with irregularities, fences and soundproof walls on construction sites, outdoor walls of buildings, etc., restaurants and hotel banquet halls, stores, corridors that are attractive for various productions Such as wall surfaces, pillars, floor surfaces, ceilings, etc. can be installed according to the purpose.

In addition, the planar multi-image display device of the present invention is installed on the surface of a building member composed of a lightened aluminum member or the like, and the peripheral part of the building member is covered with a wrapping sheet or the like approximate to the pattern A By comprising, the building material which has a sense of unity and can display two or more symbols can also be provided.

<Constituent elements of multi-image display device>
Next, details of a design sheet that displays the pattern A, a multi-image display sheet that includes a surface-emitting panel that displays the pattern B, an external information sensor, and the like will be described as constituent elements of the multi-image display device of the present invention. .

[Design sheet]
The design sheet (3) according to the present invention has a planar sheet, preferably a flexible base sheet (11), and a pattern A (5) formed by printing, cutting sheet (sticker) or drawing. ing.

[Base material sheet]
The substrate sheet (11) applicable to the design sheet (3) according to the present invention is not particularly limited as long as it is a material having flexibility and a certain degree of light transmission. For example, paper, cloth In particular, a resin sheet is preferable from the viewpoints of durability, transparency, and the like. Examples of the resin sheet applicable to the present invention include a cellulose ester sheet, a polyester sheet, a polycarbonate sheet, a polyarylate sheet, a polysulfone (including polyethersulfone) sheet, polyethylene terephthalate, and polyethylene naphthalate. Polyester sheet, polyethylene sheet, polypropylene sheet, cellulose diacetate sheet, cellulose triacetate sheet, cellulose acetate propionate sheet, cellulose acetate butyrate sheet, polyvinylidene chloride sheet, polyvinyl chloride sheet, polyvinyl alcohol sheet, ethylene vinyl alcohol sheet, Syndiotactic polystyrene sheet, polycarbonate sheet, norbornene resin sheet, polymethyl Pentene sheet, polyether ketone sheet, polyether ketone imide sheet, polyamide sheet, polyamide imide sheet, fluororesin sheet, nylon sheet, polymethyl methacrylate sheet, acrylic sheet, Teflon (registered trademark) PTFE sheet, Teflon (registered trademark) TFE A sheet etc. can be mentioned. The planar design sheet (3) may be a resin board having a certain thickness.

(Formation position of pattern A)
In the design sheet (3) according to the present invention, the position to which the pattern A (5) is applied is not particularly limited and can be formed at any position.

3A to 3C are schematic cross-sectional views showing an example of the formation position of the pattern A on the design sheet.

FIG. 3A is an example in which the pattern A (5) is arranged on the viewing surface side of the base sheet (11) constituting the design sheet (3). In the pattern A (5), high-density depiction for rendering an image. The region (5A) and the low density depiction region (5B), or the depiction region by each density, and in many cases, from the viewpoint of securing the brightness of the surface emitting panel located below the low density depiction region (5B) It is preferable to arrange the surface light emitting panel (4) at the lower part of).

Similarly, FIG. 3B is an example in which the pattern A (5) is arranged on the surface (back surface) opposite to the viewing surface of the base sheet (11) constituting the design sheet (3).

Moreover, even if it is a method of forming the design A by forming different designs on both sides of the base sheet (11) with the configurations shown in FIGS. 3A and 3B and combining the designs, respectively. Good.

Further, without forming the pattern A (5) in an independent configuration, as shown in FIG. 3C, the base material sheet (11) is impregnated with the forming material of the pattern A, for example, printing ink, so A method of forming the density depiction region (5A) and the low density depiction region (5B) may be used.

(Method for forming pattern A)
The method used for forming the pattern A as illustrated in FIGS. 3A to 3C is not particularly limited, and is a generally widely used printing method or a method of transferring a previously prepared cutting sheet or the like. Also good. Moreover, when applying cloth as a base material sheet, the method of forming the pattern A by embroidery, weaving, or dyeing can be used.

<Printing method>
The printing method is not particularly limited. For example, letterpress: letterpress printing method, flexographic printing method, dry offset printing method, intaglio: gravure printing method, gravure offset printing method, pad printing method, planographic: offset printing method, stencil. : Screen printing method or inkjet recording method can be applied. Moreover, the method by which a person draws directly on a base material sheet using the printing ink depending on a condition may be sufficient.

<Ink for printing>
Examples of the printing ink include oil-based letterpress ink, flexographic ink, dry offset ink, gravure ink, gravure offset ink, pad ink, offset ink, and screen ink.

The printing ink is transferred from the plate onto the base material sheet and then cured to fix the pattern A, and the following methods are exemplified.

(1) Evaporative drying type: Method of forming pattern A by evaporating volatile solvent in ink (resin component: vinyl resin, acrylic resin, polyester resin)
(2) Oxidative polymerization type: A method in which oxygen in the atmosphere is absorbed on the pattern A surface formed by ink mainly composed of drying oil, and vehicle molecules are bonded and polymerized to form a three-dimensional structure (resin component: alkyd) Resin)
(3) Two-component reaction type: one of two types of ink mixture using a resin having a reactive group (for example, epoxy resin or urethane resin) as a vehicle, and the other as a composition of a curing agent. Method of curing by combining liquids (4) Ultraviolet curing type: A method of forming a printing ink film on a substrate sheet and then irradiating it with ultraviolet rays to cause reaction curing. In particular, a method (resin component: acrylate resin, epoxy resin, oxetane resin, etc.) that can stably form a high-definition pattern A by applying it as an ink for an ink jet recording system.

<Color material for ink>
As a coloring material for ink, it is roughly divided into pigment-based ink and dye-based ink, but considering that the multi-image display device of the present invention is used outdoors and exposed to environments such as ultraviolet rays and water, It is preferable to use a pigment-based ink having excellent weather resistance. As the pigment, an inorganic pigment or an organic pigment can be appropriately selected and used in accordance with the application or the pattern to be expressed.

<Cutting sheet (sticker method)>
As a method for forming the pattern A, in addition to the printing method using the ink described above, the pattern A is cut in advance using a plotter or the like on each color sheet of a thin film, for example, each color sheet made of vinyl chloride. In this method, after the sheet is applied, the cut pattern A is transferred onto the base sheet. As the types, there are an outdoor sheet, an electric decoration sheet, a reflection sheet, a fluorescent sheet, a lame sheet, a mirror sheet, and the like, and can be selected according to the purpose.

(Applying mask member)
It is one of the preferred embodiments that the design sheet according to the present invention is provided with a mask member corresponding to the pattern B formed by the surface light emitting panel installed in the lower part.

FIG. 4 is a schematic cross-sectional view showing an example of the configuration of the luminescent image portion that displays the symbols A and B of the multi-image display device.

As illustrated in FIG. 3A, the multi-image display device (1) shown in FIG. 4 has a high density depiction region (5A) and a low density on the viewing surface side (upper surface side in the drawing) of the base sheet (11). A depiction region (5B) is formed, and a mask member (12) is applied to the back side.

In the lower part of the mask member (12), the surface light emitting panel (4) is disposed at a position corresponding to the low density depiction region (5B). For example, as shown in FIG. 4, the surface light emitting panel (4) includes a surface light emitter (14) and a light scattering film (also referred to as a light extraction film), for example, an outcoupling film (hereinafter, referred to as “light coupling film”). , Which will be abbreviated as OFC. Details will be described later), and has a function of improving the light extraction efficiency from the surface light emitter (14) and preventing reflection on the surface of the metal electrode when no light is emitted.

In the multi-image display device (1) configured as shown in FIG. 4, the pattern B displayed on the surface light emitting panel (4) is a mask composed of a light shielding part (12A) and a light transmission part (12B). A mode in which the contour of the graphic B to be displayed is trimmed by the member (12) is preferable.

In the present invention, as a method of forming the light shielding part (12A) and the light transmission part (12B) on the mask member (12), the light shielding part (12A) and the light are formed on the surface side of the light transmissive resin substrate. The transmission member (12B) can be formed by, for example, screen printing to produce a mask member provided with a pattern.

The ink used for the production of the mask member is not particularly limited as long as it is an ink that exhibits a light shielding effect and can form a film having excellent abrasion resistance. For example, a light-shielding ink containing a light-shielding pigment (for example, a black pigment) and an ultraviolet curable resin component is used, and after applying the ink to the light shielding part (12A) by screen printing, It can be formed by irradiating and curing.

(Give various functions)
<Nonflammable and flame retardant>
In the multi-image display device including the design sheet according to the present invention, it is preferable that the design sheet, particularly the base sheet is incombustible or flame retardant, from the viewpoint of being installed indoors as well as indoors.

The nonflammability as used in the present invention is a property in which the design sheet (base sheet and formed pattern A) does not burn continuously, and is 127 cm (5 inches) long in accordance with the A method defined in JIS K6911. A test piece with a width and thickness of 12.7 mm (0.5 inch) was flamed for 30 seconds, and after removing the flame, the test piece burned off within 180 seconds and the burned length was 25 mm or less. Defined as non-flammable.

In addition, flame retardancy is a property that burns at a slow speed but burns for a certain period of time. As a quantitative indicator of flame retardancy, OI (oxygen index) that expresses the oxygen concentration required for combustion in% Roughly, if it is 35 or more, it can be defined as flame retardant. The values of OI are 95 for PTFE (polytetrafluoroethylene), 45 for polyvinyl chloride resin, and 35 for phenol resin.

In addition, as a flame retardant used for imparting flame retardancy to a substrate sheet or the like, for example, an organic flame retardant, a bromine compound (for example, pentabromodiphenyl ether, octabromodiphenyl ether, tetrabromobisphenol A, etc.), Phosphorus compounds (for example, aromatic phosphates such as triphenyl phosphate), and inorganic flame retardants such as antimony compounds and metal hydroxides (for example, aluminum hydroxide, magnesium hydroxide, etc.) It can be applied within a range that does not impair the light transmittance of the sheet.

<Waterproof function>
The multi-image display device including the design sheet according to the present invention is often installed indoors, and it is preferable that the multi-image display device has water resistance.

In particular, the water absorption rate of the resin material constituting the base sheet is preferably 0.3% by mass or less. The water absorption can be measured according to “Plastics—How to determine water absorption” according to JIS K 7209: 2000.

Similarly, the surface-emitting panel and the waterproof connector, which will be described later, are also preferably subjected to a waterproof treatment (specifically, a waterproof level for daily life).

<Sound absorption function>
The design sheet according to the present invention preferably has a soundproofing function. As a method for imparting a soundproofing function, a cell structure made of foamed resin, a three-dimensional structure having a wall surface made of a resin material (such as a honeycomb structure), a resin material to which hollow fine particles are added, or the like can be used as the base sheet.

<Photocatalytic function>
The design sheet according to the present invention preferably has a photocatalytic function.

A photocatalyst is a function that generates strong oxidizing power on its surface when irradiated with light from the sun, fluorescent lamps, etc., and removes harmful substances such as organic compounds and bacteria that come in contact with it. .

Specific functions include:
(1) Clean Air function of removing harmful substances such as NO _x and SO _x, formaldehyde generated from building materials in the air,
(2) Deodorizing function to decompose bad odors such as acetaldehyde, ammonia, hydrogen sulfide,
(3) Antibacterial function with antibacterial action,
(4) Antifouling function that prevents the surface of the design sheet from being soiled.

As a method of imparting such a photocatalytic function, for example, a titanium oxide photocatalyst can be applied. Titanium oxide is a substance that activates when exposed to light energy and exerts a strong oxidizing action. By containing it in a base sheet, pollutants and odor components, mainly organic substances, are oxidized and decomposed into carbon dioxide and water. In addition, the photo-induced superhydrophilicity can increase the affinity of the substrate sheet surface for water, and can impart antifogging, antifouling, and self-cleaning properties.

<Formation of design A and design B by multiple elements>
In the above description, with respect to the symbol A constituting the planar design sheet, the case where one type of symbol A is provided on one design sheet has been described for convenience. However, the surface having the symbol A as necessary. The design A may be formed by laminating a plurality of sheet-like design sheets, or by laminating a plurality of planar design sheets having different designs.

Similarly, regarding the pattern B constituting the planar surface light emitting panel (4), the case where one type of the pattern B is provided on one surface light emitting panel (4) has been described for convenience. Even if it has a configuration in which a plurality of planar surface light emitting panels (4) having a pattern B are laminated, or a plurality of planar surface emitting panels (4) having different designs are laminated to form a pattern B It may be a method to do.

[Surface emitting panel]
Next, the configuration of the surface light emitting panel according to the present invention will be described. A main component of the planar surface light emitting panel is a surface light emitter for displaying the pattern B.

The surface light emitting panel applicable to the multi-image display device of the present invention is not particularly limited as long as it has a function of emitting or extinguishing according to information, but it can be installed on a flat surface and consumes less power. From the viewpoint of a long emission lifetime, an LED (also referred to as an inorganic light-emitting diode or an inorganic EL element) or an organic EL element (also referred to as an OLED) is preferable. From the viewpoint that it can be installed on a simple curved surface, an organic EL element is preferable.

The LED is also referred to as an inorganic light emitting diode or an inorganic electroluminescence element, and is an inorganic EL element formed as a surface light emitter by dispersing crystal powder of a light emitting material in an organic binder and applying it to a flexible substrate. . Since the LED has a low material cost, it is suitable for a sheet-like light source of several tens of centimeters and has a bending radius of several millimeters. As the light emitting material, ZnS (zinc sulfide) containing a small amount of Cu (copper) ions is used.

When forming a surface light emitting panel using LEDs, a dot-shaped deflection pattern is formed in advance on the light guide plate, and an LED light source for irradiating light on the side end surface of the light guide plate is provided on the side of the light guide plate. Configured. The light emitted from the LED light source enters from the side end face of the light guide plate, and the incident light is totally reflected in the front direction of the light guide plate by the deflection reflection surface of the deflection pattern. As a result, light is emitted from the front side of the light guide plate in a predetermined pattern, and when the light guide plate is viewed from the front, the pattern appears to emit light.

[Organic EL device]
Next, details of the organic EL element will be described as a representative example of a surface light emitter constituting the flexible surface light emitting panel according to the present invention.

The organic EL device constituting the flexible surface light emitter according to the present invention can form various constituent layers on the resin substrate and the transparent anode. For example, the following (i) to (v) It may have the following layer structure. Further, the following light emitting layer is preferably composed of a blue light emitting layer, a green light emitting layer and a red light emitting layer.

(I) a configuration in which a transparent anode / organic functional layer unit (light emitting layer / electron transport layer) / cathode / sealing adhesive / sealing member are laminated on a resin base material;
(Ii) A configuration in which a transparent anode / organic functional layer unit (hole transport layer / light emitting layer / electron transport layer) / cathode / sealing adhesive / sealing member are laminated on a resin base material,
(Iii) A transparent anode / organic functional layer unit (hole transport layer / light emitting layer / hole blocking layer / electron transport layer) / cathode / sealing adhesive / sealing member was laminated on the resin substrate. Constitution,
(Iv) On the resin substrate, transparent anode / organic functional layer unit (hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer) / cathode / sealing adhesive / sealing member A stacked structure,
(V) On the resin substrate, transparent anode / organic functional layer unit (anode buffer layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer) / cathode / sealing adhesive / Configuration in which sealing members are laminated,
Etc.

Next, each component of the organic EL element will be described.

(Resin base material)
The resin base material applied to the organic EL element according to the present invention is preferably a flexible resin base material having flexibility.

Examples of the resin base material applicable to the present invention include polyesters such as polyethylene terephthalate (abbreviation: PET) and polyethylene naphthalate (abbreviation: PEN), polyethylene, polypropylene, cellophane, cellulose diacetate, and cellulose triacetate (abbreviation: TAC). ), Cellulose acetate butyrate, cellulose acetate propionate (abbreviation: CAP), cellulose esters such as cellulose acetate phthalate, cellulose nitrate and their derivatives, polyvinylidene chloride, polyvinyl alcohol, polyethylene vinyl alcohol, syndiotactic polystyrene , Polycarbonate (abbreviation: PC), norbornene resin, polymethylpentene, polyetherketone, polyimide, polyethersulfone Abbreviation: PES), polyphenylene sulfide, polysulfones, polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate, acrylic and polyarylates, Arton (trade name, manufactured by JSR) and Appel (trade name) Cycloolefin resins such as Mitsui Chemicals, Inc.).

Among these resin substrates, films such as polyethylene terephthalate (abbreviation: PET), polybutylene terephthalate, polyethylene naphthalate (abbreviation: PEN), polycarbonate (abbreviation: PC) are flexible in terms of cost and availability. It is preferably used as a resin base material having

In the present invention, the thickness of the resin substrate can be in the range of 3 to 200 μm, preferably in the range of 10 to 100 μm, and more preferably in the range of 20 to 50 μm.

The resin substrate applicable to the present invention can also be suitably used as a sealing member (transparent substrate) for organic EL elements. The resin base material may be an unstretched film or a stretched film.

The resin substrate applicable to the present invention can be produced by a conventionally known general film forming method. For example, an unstretched resin base material that is substantially amorphous and not oriented can be produced by melting a resin as a material with an extruder, extruding it with an annular die or a T-die, and quenching. In addition, the unstretched resin base material is transported in the direction of the resin base material (vertical axis direction) by a known method such as uniaxial stretching, tenter sequential biaxial stretching, tenter simultaneous biaxial stretching, tubular simultaneous biaxial stretching, or the like. , MD direction), or a stretched resin substrate can be produced by stretching in a direction perpendicular to the conveying direction of the resin substrate (horizontal axis direction, TD direction). The draw ratio in this case can be appropriately selected according to the resin used as the raw material of the resin base material, but is preferably in the range of 1.1 to 10 times in the vertical axis direction and the horizontal axis direction.

(Anode: Transparent anode)
As the anode constituting the organic EL device according to the present invention, a metal such as silver or gold or an alloy containing a metal as a main component, a CuI or indium-tin composite oxide (ITO), SnO ₂ or ZnO Although an oxide can be mentioned, it is preferably a metal or an alloy containing a metal as a main component, more preferably silver or an alloy containing silver as a main component.

When the transparent anode is composed mainly of silver, the purity of silver is preferably 99% or more. Further, palladium (Pd), copper (Cu), gold (Au), or the like may be added to ensure the stability of silver.

The transparent anode is a layer composed mainly of silver. Specifically, the transparent anode may be formed of silver alone or may be composed of an alloy containing silver (Ag). Examples of such alloys include silver-magnesium (Ag-Mg), silver-copper (Ag-Cu), silver-palladium (Ag-Pd), silver-palladium-copper (Ag-Pd-Cu), silver -Indium (Ag-In) and the like.

Among the constituent materials constituting the anode, the anode constituting the organic EL device according to the present invention is a transparent anode composed mainly of silver and having a thickness in the range of 2 to 20 nm. The thickness is preferably in the range of 4 to 12 nm. A thickness of 20 nm or less is preferable because the absorption component and reflection component of the transparent anode can be kept low and high light transmittance can be maintained.

In the present invention, the layer composed mainly of silver means that the silver content in the transparent anode is 60% by mass or more, preferably the silver content is 80% by mass or more, More preferably, the silver content is 90% by mass or more, and particularly preferably the silver content is 98% by mass or more. The term “transparent” in the transparent anode according to the present invention means that the light transmittance at a wavelength of 550 nm is 50% or more.

The transparent anode according to the present invention may have a configuration in which a layer composed mainly of silver is divided into a plurality of layers as necessary.

Further, in the present invention, when the anode is a transparent anode composed mainly of silver, a base layer may be provided at the lower portion from the viewpoint of improving the uniformity of the silver film of the transparent anode to be formed. preferable. Although there is no restriction | limiting in particular as a base layer, It is preferable that it is a layer containing the organic compound which has a nitrogen atom or a sulfur atom, and the method of forming a transparent anode on the said base layer is a preferable aspect.

In general, as a method for forming a transparent conductive film, for example, a method using a wet process such as a coating method, an inkjet method, a coating method, a dip method, a vapor deposition method (for example, a resistance heating method, an EB method, etc.), a sputtering method, Although the method using dry processes, such as CVD method, etc. are mentioned, In the manufacturing method of the organic EL element of this invention, it is preferable to form by a vapor deposition method as a transparent anode.

In addition, the transparent anode can be sufficiently conductive by being formed on the underlayer without any high-temperature annealing treatment (for example, a heating process at 150 ° C. or higher) after the formation.

(Underlayer)
In the organic EL device according to the present invention, when the anode is a transparent anode composed mainly of silver, the organic compound having at least a nitrogen atom or a sulfur atom at a position adjacent to the resin substrate side of the transparent anode. It is a preferable aspect to have a base layer containing, and further, the organic compound contained in the base layer is preferably a compound having a nitrogen atom having an effective unshared electron pair not involved in aromaticity.

(Intermediate electrode)
The organic EL device according to the present invention has a structure in which two or more organic functional layer units are laminated between an anode (first electrode) and a cathode (second electrode), and two or more organic functional layers It is possible to adopt a structure in which the units are separated by an intermediate electrode layer unit having independent connection terminals for obtaining electrical connection.

(Organic functional layer unit)
Next, each layer constituting the organic functional layer unit will be described in the order of a charge injection layer, a light emitting layer, a hole transport layer, an electron transport layer, and a blocking layer.

<Charge injection layer>
The charge injection layer according to the present invention is a layer provided between the electrode and the light-emitting layer in order to lower the driving voltage and improve the light emission luminance. “The organic EL element and its industrialization front line (November 30, 1998) The details are described in Chapter 2, “Electrode Materials” (pages 123 to 166) of the second edition of “NTS Co., Ltd.”, and there are a hole injection layer and an electron injection layer.

In general, the charge injection layer is present between the anode and the light emitting layer or the hole transport layer in the case of a hole injection layer, and between the cathode and the light emitting layer or the electron transport layer in the case of an electron injection layer. However, the present invention is characterized in that the charge injection layer is disposed adjacent to the transparent electrode. When used in an intermediate electrode, it is sufficient that at least one of the adjacent electron injection layer and hole injection layer satisfies the requirements of the present invention.

The hole injection layer according to the present invention is a layer disposed adjacent to the anode, which is a transparent electrode, in order to lower the drive voltage and improve the light emission luminance. The details are described in Volume 2, Chapter 2, “Electrode Materials” (pages 123-166) of “Month 30th, NTS Corporation”.

Examples of the hole injection layer include compounds described in detail in JP-A-9-45479, JP-A-9-260062, and JP-A-8-288069.

The electron injection layer is a layer provided between the cathode and the light emitting layer for lowering the driving voltage and improving the light emission luminance. When the cathode is composed of the transparent electrode according to the present invention, Chapter 2 “Electrode materials” (pages 123 to 166) of the second edition of “Organic EL devices and their industrialization front line (issued by NTS, November 30, 1998)” ) Is described in detail.

For the electron injection layer, materials described in JP-A-6-325871, JP-A-9-17574, JP-A-10-74586 and the like can be used. The electron injection layer is preferably a very thin film, and depending on the constituent material, the layer thickness is preferably in the range of 1 nm to 10 μm.

<Light emitting layer>
The light emitting layer constituting the organic functional layer unit of the organic EL device according to the present invention preferably has a structure containing a phosphorescent light emitting compound as a light emitting material.

This light emitting layer is a layer that emits light by recombination of electrons injected from the electrode or the electron transport layer and holes injected from the hole transport layer, and the light emitting portion is in the layer of the light emitting layer. Alternatively, it may be the interface between the light emitting layer and the adjacent layer.

Such a light emitting layer is not particularly limited in its configuration as long as the light emitting material contained satisfies the light emission requirements. Moreover, there may be a plurality of layers having the same emission spectrum and emission maximum wavelength. In this case, it is preferable to have a non-light emitting intermediate layer between the light emitting layers.

The total thickness of the light emitting layers is preferably in the range of 1 to 100 nm, and more preferably in the range of 1 to 30 nm because a lower driving voltage can be obtained. In addition, the sum total of the thickness of a light emitting layer is the thickness also including the said intermediate | middle layer, when a nonluminous intermediate | middle layer exists between light emitting layers.

In the present invention, a preferred embodiment is a structure in which two or more light emitting layer units are laminated. The thickness of each light emitting layer is preferably adjusted within the range of 1 to 50 nm, more preferably within the range of 1 to 20 nm. When the plurality of stacked light emitting layers correspond to the respective emission colors of blue, green, and red, there is no particular limitation on the relationship between the thicknesses of the blue, green, and red light emitting layers.

The light emitting layer as described above is formed of a light emitting material or a host compound by a known method such as a vacuum deposition method, a spin coating method, a casting method, an LB method (Langmuir-Blodget, Langmuir Blodgett method) and an ink jet method. can do.

In the light emitting layer, a plurality of light emitting materials may be mixed, and a phosphorescent light emitting material and a fluorescent light emitting material (also referred to as a fluorescent dopant or a fluorescent compound) may be mixed and used in the same light emitting layer. The structure of the light-emitting layer preferably includes a host compound (also referred to as a light-emitting host) and a light-emitting material (also referred to as a light-emitting dopant compound), and emits light from the light-emitting material.

<Host compound>
As the host compound contained in the light emitting layer, a compound having a phosphorescence quantum yield of phosphorescence emission at room temperature (25 ° C.) of less than 0.1 is preferable. Further, the phosphorescence quantum yield is preferably less than 0.01. Moreover, it is preferable that the volume ratio in the layer is 50% or more among the compounds contained in a light emitting layer.

The host compound used in the light emitting layer may be a conventionally known low molecular compound or a high molecular compound having a repeating unit, and a low molecular compound having a polymerizable group such as a vinyl group or an epoxy group (evaporation polymerizable light emitting host). )

Examples of host compounds applicable to the present invention include, for example, JP-A Nos. 2001-257076, 2002-308855, 2001-313179, 2002-319491, 2001-357777, 2002-334786, 2002-8860, 2002-334787, 2002-15871, 2002-334788, 2002-43056, 2002-334789, 2002 -75645, 2002-338579, 2002-105445, 2002-343568, 2002-141173, 2002-352957, 2002-203683, 2002 36 No. 227, No. 2002-231453, No. 2003-3165, No. 2002-234888, No. 2003-27048, No. 2002-255934, No. 2002-260861, No. 2002-280183. No. 2002, No. 2002-299060, No. 2002-302516, No. 2002-305083, No. 2002-305084, No. 2002-308837, US Patent Application Publication No. 2003/0175553, US Patent Application Publication No. 2006/0280965, US Patent Application Publication No. 2005/0112407, US Patent Application Publication No. 2009/0017330, US Patent Application Publication No. 2009/0030202, US Patent application No. 2005/238919, International Publication No. 2001/039234, International Publication No. 2009/021126, International Publication No. 2008/056746, International Publication No. 2004/093207, International Publication No. 2005/089025, International Public Publication No. 2007/063796, International Publication No. 2007/063754, International Publication No. 2004/107822, International Publication No. 2005/030900, International Publication No. 2006/114966, International Publication No. 2009/086028, International Publication No. Examples thereof include compounds described in 2009/003898, International Publication No. 2012/023947, Japanese Patent Application Laid-Open No. 2008-074939, Japanese Patent Application Laid-Open No. 2007-254297, European Patent No. 2034538, and the like.

<Light emitting material>
As the light-emitting material that can be used in the present invention, a phosphorescent compound (also referred to as a phosphorescent compound, a phosphorescent material, or a phosphorescent dopant) and a fluorescent compound (both a fluorescent compound or a fluorescent material) are used. Say).

<Phosphorescent compound>
A phosphorescent compound is a compound in which light emission from an excited triplet is observed. Specifically, it is a compound that emits phosphorescence at room temperature (25 ° C.), and the phosphorescence quantum yield is 0 at 25 ° C. A preferred phosphorescence quantum yield is 0.1 or more, although it is defined as 0.01 or more compounds.

The phosphorescent quantum yield can be measured by the method described in Spectroscopic II, page 398 (1992 edition, Maruzen) of the Fourth Edition Experimental Chemistry Course 7. The phosphorescence quantum yield in the solution can be measured using various solvents, but when using a phosphorescent compound in the present invention, the phosphorescence quantum yield is 0.01 or more in any solvent. Should be achieved.

The phosphorescent compound can be appropriately selected from known compounds used for the light-emitting layer of a general organic EL device, but preferably contains a group 8 to 10 metal in the periodic table of elements. More preferred are iridium compounds, more preferred are iridium compounds, osmium compounds, platinum compounds (platinum complex compounds) or rare earth complexes, and most preferred are iridium compounds.

In the present invention, at least one light emitting layer may contain two or more phosphorescent compounds, and the concentration ratio of the phosphorescent compound in the light emitting layer varies in the thickness direction of the light emitting layer. It may be an embodiment.

Specific examples of known phosphorescent compounds that can be used in the present invention include compounds described in the following documents.

Nature 395, 151 (1998), Appl. Phys. Lett. 78, 1622 (2001), Adv. Mater. 19, 739 (2007), Chem. Mater. 17, 3532 (2005), Adv. Mater. 17, 1059 (2005), International Publication No. 2009/100991, International Publication No. 2008/101842, International Publication No. 2003/040257, US Patent Application Publication No. 2006/835469, US Patent Application Publication No. 2006 /. Examples thereof include compounds described in US Patent No. 0202194, US Patent Application Publication No. 2007/0087321, US Patent Application Publication No. 2005/0244673, and the like.

Also, Inorg. Chem. 40, 1704 (2001), Chem. Mater. 16, 2480 (2004), Adv. Mater. 16, 2003 (2004), Angew. Chem. lnt. Ed. 2006, 45, 7800, Appl. Phys. Lett. 86, 153505 (2005), Chem. Lett. 34, 592 (2005), Chem. Commun. 2906 (2005), Inorg. Chem. 42, 1248 (2003), International Publication No. 2009/050290, International Publication No. 2002/015645, International Publication No. 2009/000673, US Patent Application Publication No. 2002/0034656, and US Pat. No. 7,332,232. US Patent Application Publication No. 2009/0108737, US Patent Application Publication No. 2009/0039776, US Patent No. 6921915, US Patent No. 6,687,266, US Patent Application Publication No. 2007/0190359, US Patent Application Publication No. 2006/0008670, US Patent Application Publication No. 2009/0165846, US Patent Application Publication No. 2008/0015355, US Pat. No. 7,250,226, US Pat. No. 7,396,598 US patent Examples include compounds described in Japanese Patent Application Publication No. 2006/0263635, US Patent Application Publication No. 2003/0138657, US Patent Application Publication No. 2003/0152802, US Pat. No. 7090928, and the like. it can.

Also, International Publication No. 2005/076380, International Publication No. 2010/032663, International Publication No. 2008/140115, International Publication No. 2007/052431, International Publication No. 2011/134013, International Publication No. 2011/157339, International Publication No. 2010/086089, International Publication No. 2009/113646, International Publication No. 2012/020327, International Publication No. 2011/051404, International Publication No. 2011/004639, International Publication No. 2011/073149, JP The compounds described in 2012-069737, JP2009-114086, JP2003-81988, JP2002-302671, JP2002-363552, and the like can also be mentioned.

In the present invention, preferred phosphorescent compounds include organometallic complexes having Ir as a central metal. More preferably, a complex containing at least one coordination mode of metal-carbon bond, metal-nitrogen bond, metal-oxygen bond, and metal-sulfur bond is preferable.

<Fluorescent compound>
Fluorescent compounds include coumarin dyes, pyran dyes, cyanine dyes, croconium dyes, squalium dyes, oxobenzanthracene dyes, fluorescein dyes, rhodamine dyes, pyrylium dyes, perylene dyes, stilbene dyes. And dyes, polythiophene dyes, and rare earth complex phosphors.

<Hole transport layer>
The hole transport layer is made of a hole transport material having a function of transporting holes. In a broad sense, the hole injection layer and the electron blocking layer also have the function of a hole transport layer. The hole transport layer can be provided as a single layer or a plurality of layers.

The hole transport material has any of hole injection or transport and electron barrier properties, and may be either organic or inorganic. For example, triazole derivatives, oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, Examples include stilbene derivatives, silazane derivatives, aniline copolymers, conductive polymer oligomers, and thiophene oligomers.

As the hole transport material, those described above can be used, but porphyrin compounds, aromatic tertiary amine compounds and styrylamine compounds can be used, and in particular, aromatic tertiary amine compounds can be used. preferable.

For the hole transport layer, the hole transport material may be formed by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an ink jet method, and an LB method (Langmuir Brodget, Langmuir Brodgett method). Thus, it can be formed by thinning. The layer thickness of the hole transport layer is not particularly limited, but is usually about 5 nm to 5 μm, preferably 5 to 200 nm. The hole transport layer may have a single layer structure composed of one or more of the above materials.

Also, the p property can be increased by doping impurities into the material of the hole transport layer. Examples thereof include JP-A-4-297076, JP-A-2000-196140, 2001-102175 and J.P. Appl. Phys. 95, 5773 (2004), and the like.

Thus, it is preferable to increase the p property of the hole transport layer because an element with lower power consumption can be manufactured.

<Electron transport layer>
The electron transport layer is made of a material having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer. The electron transport layer can be provided as a single layer structure or a stacked structure of a plurality of layers.

In the electron transport layer having a single-layer structure and the electron transport layer having a multilayer structure, an electron transport material (also serving as a hole blocking material) constituting a layer portion adjacent to the light emitting layer is used as an electron transporting material. What is necessary is just to have the function to transmit. As such a material, any one of conventionally known compounds can be selected and used. Examples include nitro-substituted fluorene derivatives, diphenylquinone derivatives, thiopyran dioxide derivatives, carbodiimides, fluorenylidenemethane derivatives, anthraquinodimethane, anthrone derivatives, and oxadiazole derivatives.

The electron transport layer can be formed by thinning the above material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an inkjet method, and an LB method. The thickness of the electron transport layer is not particularly limited, but is usually about 5 nm to 5 μm, preferably 5 to 200 nm. The electron transport layer may have a single structure composed of one or more of the above materials.

<Blocking layer>
The blocking layer includes a hole blocking layer and an electron blocking layer, and is a layer provided as necessary in addition to the constituent layers of the organic functional layer unit 3 described above. For example, it is described in JP-A Nos. 11-204258 and 11-204359, and “Organic EL elements and the forefront of industrialization (published by NTT Corporation on November 30, 1998)” on page 237. Hole blocking (hole block) layer and the like.

The hole blocking layer has a function of an electron transport layer in a broad sense. The hole blocking layer is made of a hole blocking material that has a function of transporting electrons but has a very small ability to transport holes, and recombines electrons and holes by blocking holes while transporting electrons. Probability can be improved. Moreover, the structure of an electron carrying layer can be used as a hole-blocking layer as needed. The hole blocking layer is preferably provided adjacent to the light emitting layer.

On the other hand, the electron blocking layer has a function of a hole transport layer in a broad sense. The electron blocking layer is made of a material that has the ability to transport holes and has a very small ability to transport electrons. By blocking holes while transporting holes, the probability of recombination of electrons and holes is improved. Can be made. Moreover, the structure of a positive hole transport layer can be used as an electron blocking layer as needed. The layer thickness of the hole blocking layer applied to the present invention is preferably in the range of 3 to 100 nm, more preferably in the range of 5 to 30 nm.

(Cathode: Second electrode)
The cathode (second electrode) is an electrode film that functions to supply holes to the second organic functional layer unit or the third organic functional layer unit, and is a metal, alloy, organic or inorganic conductive compound, or these A mixture is used. Specifically, gold, aluminum, silver, magnesium, lithium, magnesium / copper mixture, magnesium / silver mixture, magnesium / aluminum mixture, magnesium / indium mixture, indium, lithium / aluminum mixture, rare earth metal, ITO, ZnO, TiO Oxide semiconductors such as ₂ and SnO ₂ .

The second electrode can be produced by forming a thin film of these conductive materials by a method such as vapor deposition or sputtering. The sheet resistance as the second electrode is preferably several hundred Ω / □ or less, and the film thickness is usually selected in the range of 5 nm to 5 μm, preferably 5 to 200 nm.

In the case where the organic EL element is a double-sided light emitting type in which the emitted light L is also taken out from the second electrode, the second electrode having good light transmittance may be selected and configured.

(Sealing member)
Examples of the sealing means used for sealing the organic EL element according to the present invention include a method of adhering the sealing member, the second electrode 6 and the transparent substrate 1 with an adhesive.

The sealing member may be disposed so as to cover the display area of the organic EL element, and may be concave or flat. Further, transparency and electrical insulation are not particularly limited.

In the gap between the sealing member and the display area of the organic EL element, it is preferable to inject an inert gas such as nitrogen or argon, or an inert liquid such as fluorinated hydrocarbon or silicon oil in the gas phase and the liquid phase. . Further, the gap between the sealing member and the display area of the organic EL element can be evacuated, or a hygroscopic compound can be sealed in the gap.

<< Configuration of organic EL element >>
[Tandem type organic EL device]
FIG. 15 is a schematic cross-sectional view showing an example of the configuration of a tandem organic EL element.

The organic EL element (400) shown in FIG. 15 includes a first electrode (102, anode), a first organic functional layer unit (103C), and a second organic functional layer unit (103D) as transparent electrodes on a transparent substrate (101). ), A third organic functional layer unit (103E), and a second electrode (106, cathode) as a counter electrode are sequentially stacked. For example, when the first organic functional layer unit (103C) emits red light, the second organic functional layer unit (103D) emits green light, and the third organic functional layer unit (103E) emits blue light, the first electrode (102, By applying a voltage between the anode) and the second electrode (106, cathode), white light is emitted.

[Toning type organic EL device]
FIG. 16 is a schematic cross-sectional view showing an example of the configuration of a toning type organic EL element.

In FIG. 16, the organic EL element (200) includes a first electrode (102), a first organic functional layer unit (103C), and a first intermediate electrode layer unit (104B) that are transparent electrodes on a transparent substrate (101). The second organic functional layer unit (103D), the second intermediate electrode layer unit (104C), the third organic functional layer unit (103E), and the second electrode (106) as the counter electrode are sequentially laminated and configured. . The first intermediate electrode layer unit (104B) and the second intermediate electrode layer unit (104C) have base layers (142B) and (143B) containing nitrogen atoms on the transparent substrate (101) side, respectively. Above, a configuration having intermediate electrodes (142A) and (143A) is shown.

FIG. 16 shows a case where the first electrode (102) is an anode that is a transparent electrode and the second electrode (106) is a cathode.

Between the first electrode (102) and the first intermediate electrode (142A), a lead wire is provided, and the first organic functional layer is applied to each connection terminal as a drive voltage V1 within a range of 2 to 40V. The unit (103C) emits light. Similarly, the first intermediate electrode (142A) and the second intermediate electrode (143A) are wired with lead wires, and the drive voltage V3 is applied to the respective connection terminals within the range of 2 to 40V, so that the first Two organic functional layer units (103D) emit light. Similarly, the second intermediate electrode (143A) and the second electrode (106) are also wired with lead wires, and applied to the respective connection terminals as a drive voltage V3 within a range of 2 to 40V, so that the third The organic functional layer unit (103E) emits light.

As described above, by emitting light by applying each organic functional layer unit independently, blue light emission, green single color light emission, red single color light emission, and white light emission can be obtained by simultaneously emitting light.

[Method of forming light emission pattern]
Next, a method for forming a light emission pattern for displaying the pattern B on the organic EL element according to the present invention will be described.

FIG. 5 is a schematic cross-sectional view showing another example of the configuration of the light-emitting image portion of the multi-image display device. 2 shows a method of forming a pattern.

As illustrated in FIG. 4A, the multi-image display device (1) shown in FIG. 5 has a high-density drawing area (5A) and a low-density drawing area on the viewing surface side of the base sheet (11). (5B) is formed. A surface light emitter (14) and a light scattering film (13, light extraction film) are disposed on the lower surface of the base sheet (11), thereby improving the light extraction efficiency from the surface light emitter (14). And has a function of preventing reflection on the surface of the metal electrode when no light is emitted.

A non-light emitting area (14A) and a light emitting area (14B) are formed on the surface light emitter (14) by light irradiation, and the pattern B is displayed.

Hereinafter, a method for forming the non-light emitting region (14A) and the light emitting region (14B) for the organic EL element will be described.

The light irradiation treatment method for the organic EL element is not particularly limited. For example, a method of performing light irradiation after forming a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer, or the above Any of the methods of patterning the light emitting area by irradiating light to the organic EL device (14) subjected to the sealing treatment may be used, but the latter method may be applied to the sealed organic EL device (14). Since light irradiation can be performed in a state exposed to the atmosphere, it is preferable from the viewpoint of simplifying the light irradiation process and reducing the manufacturing cost.

The light irradiation step applicable to the present invention is a step of irradiating a predetermined pattern region of the organic functional layer unit with light to make the irradiated portion a non-light emitting region. Thereby, the light emission function of an organic functional layer unit is lost in a light irradiation area | region, and the organic EL element (14) which has the pattern B can be produced. That is, a non-light-emitting region (14A) subjected to light irradiation is formed, and the non-irradiation region is a light-emitting region (14B) similar to the conventional organic EL element, and a predetermined pattern B can be formed.

In the light irradiation step according to the present invention, the light irradiation method is specified as long as the irradiation portion can be made a non-light emitting region by irradiating a predetermined pattern region of the organic functional layer unit. Although it is not limited to the pattern formation method of this, Preferably, it irradiates with a light through the photomask member which consists of the shape of the pattern B, and forms a light emission area | region (14B) and a non-light emission area | region (14A). The method is preferred.

The light to be irradiated in the light irradiation step contains at least ultraviolet light, and may further have visible light or infrared light. The ultraviolet ray referred to in the present invention refers to an electromagnetic wave having a wavelength longer than that of X-rays and shorter than the shortest wavelength of visible light. Specifically, the wavelength region is in the range of 1 to 400 nm, preferably As the wavelength of irradiation light to be applied, it is preferable to use irradiation light having a maximum wavelength at 355 nm, 365 nm, 380 nm, 405 nm, or the like.

The irradiation light generating means and the irradiation means are not particularly limited as long as they can generate light using a conventionally known irradiation apparatus or the like and irradiate a predetermined region.

As a light source applicable to the present invention, a high pressure mercury lamp, a low pressure mercury lamp, a hydrogen (deuterium) lamp, a rare gas (xenon, argon, helium, neon, etc.) discharge lamp, a nitrogen laser, an excimer laser (XeCl, XeF, KrF, KrCl, etc.), hydrogen lasers, halogen lasers, harmonics of various visible (LD) -infrared lasers (THG (Third Harmonic Generation) light of YAG lasers), and the like.

In the method of irradiating the laser beam, the laser beam irradiation position is obtained by irradiating the organic functional layer unit (3) with a laser beam in a spot shape and relatively moving the laser light source and the organic functional layer unit (3). Can be used to irradiate the pattern region with light.

In the method of irradiating the irradiation light through the mask member, the light emitting region (14B) of the organic functional layer unit is shielded by the mask member, and the entire surface of the pattern region of the organic functional layer unit is passed through the optical filter. And a method of irradiating the light.

In the present invention, as described above, as described above, the pattern B formed by the planar surface light emitting panel (14) includes the non-light emitting region (14A) on one surface light emitting panel (14). ) And the light emitting region (14B), the pattern B has been described. However, if necessary, it may have a configuration in which a plurality of planar surface light emitting panels (4) having the pattern B are stacked, or the pattern The pattern B may be formed by stacking a plurality of planar light emitting panels (4) having different shapes or arranging them in parallel.

[Light scattering film]
In the surface light emitting panel (4) according to the present invention, a light scattering film (also referred to as a light extraction film) is disposed between the design sheet (3) and the organic EL element (14) which is a surface light emitter. It is preferable to do.

The organic EL element emits light inside a layer having a refractive index higher than that of air (within a refractive index of about 1.6 to 2.1), and is about 15% to 20% of the light generated in the light emitting layer. It is generally said that it can only be taken out. This is because light incident on the interface (interface between the resin substrate and the air) at an angle θ greater than the critical angle causes total reflection and cannot be extracted outside the device, or between the transparent electrode or the light emitting layer and the resin substrate. This is because light is totally reflected between the light and the light is guided through the transparent electrode or the light emitting layer, and as a result, the light escapes in the direction of the side surface of the device.

As a means for improving the light extraction efficiency, in the organic EL panel according to the present invention, a light extraction film is provided on the organic EL device. This light extraction film is also called an outcoupling film (OCF).

As a light extraction method, for example, a method of forming irregularities on the surface of the film substrate to prevent total reflection at the resin substrate and the air interface (for example, US Pat. No. 4,774,435), concentrating the substrate. (For example, Japanese Patent Application Laid-Open No. 63-314795), a method for forming a reflection surface on the side surface of the element (for example, Japanese Patent Application Laid-Open No. 1-220394), an intermediate between the substrate and the light emitter. A method of forming an antireflection film by introducing a flat layer having a refractive index (for example, Japanese Patent Laid-Open No. 62-172691), and introducing a flat layer having a lower refractive index than the substrate between the substrate and the light emitter. (For example, Japanese Patent Laid-Open No. 2001-202827), a method of forming a diffraction grating between any one of the substrate, the transparent electrode layer and the light emitting layer (including between the substrate and the outside) (Japanese Patent Laid-Open No. 11-283951) And a method of providing an organic layer or a scattering layer having a high refractive index than the substrate between the substrate and the light emitting element and the like.

In the surface light emitter panel according to the present invention, as the OCF (out coupling film), for example, a microlens film, a lenticular film, and a light scattering property provided with a number of microlens-like structures on the light extraction side on the film. A light scattering film containing fine particles, a diffusion film whose surface is treated with random irregularities, an internal refractive index distribution type film, and a light diffusion film containing a diffraction grating layer, for example, Japanese Patent No. 2822983, JP JP 2001-33783, JP 2001-56461, JP 6-18706, JP 10-20103, JP 11-160505, JP 11-305010, JP 11-326608, JP 2000. -121809, JP-A 2000-180611 and JP-A 2000-338 Each publication of film No. 10 can be mentioned. In particular, it is preferable to use a light-scattering film mixed with fine particles that are inexpensive and can be mass-produced.

[External information sensor]
In the multi-image display device of the present invention, by controlling the light emission of the surface light emitting panel, it is possible to display symbols having different patterns of the symbols A and B. A method of controlling according to information obtained from the outside is a preferred mode.

As a method for controlling the light emission of the surface emitting panel, as illustrated in FIGS. 1 and 2, the multi-image display device (1) includes an external information sensor (6), and the external information sensor (6). The acquired information is transmitted to the light emission control unit (7), and the light emission of the surface light emitting panel (4) is controlled according to preset control conditions.

The following information is mentioned as main light emission control information obtained from the external information sensor (6).

(1) Light (illuminance) information: Controls the light emission of the surface-emitting panel in accordance with the change in the illuminance (brightness) of the environment where the multi-image display device of the present invention is installed. For example, in the daytime, the surface illuminator is not lit, only the pattern A is displayed, and the surface illuminating panel is caused to emit light by detecting the decrease in illuminance when it becomes dark, and the pattern B is displayed. At this time, the night image may be a composite of the image A and the image B.

(2) Sound information: Light emission of the surface light-emitting panel is controlled by sound information (human voice, music, etc.) of the environment where the multi-image display device of the present invention is installed. For example, when a person is absent, only the symbol A is displayed, and when the person enters the room and senses voice or music, the surface emitting panel is caused to emit light and the symbol B is displayed. At this time, the image may be a composite of the image A and the image B.

(3) Human body sensing information: A human sensor is installed in an environment where the multi-image display device of the present invention is installed to control light emission of the surface light emitting panel. For example, when a person is absent, only the pattern A is displayed without emitting light, and when the person enters and senses, the surface emitting panel is caused to emit light and the pattern B is displayed. At this time, the image may be a composite of the image A and the image B.

(4) Vehicle sensing information: The multi-image display device of the present invention is installed on a road or the like, and the light emission of the surface light emitting panel is controlled. For example, the passage of a car is detected, the surface emitting panel is caused to emit light, and the symbol B is displayed. At this time, the image may be a composite of the image A and the image B.

(5) Smoke and heat detection information: When smoke or heat is detected due to a fire or the like, for example, the surface light emitting panel of the multi-image display device of the present invention installed on the floor is caused to emit light, and a pattern such as an arrow Emit B to display the evacuation route and perform safe and smooth evacuation. Usually, the pattern A as a floor tile is displayed.

(6) Earthquake detection information: When the occurrence of an earthquake or the like is detected, the surface light emitting panel of the multi-image display device of the present invention installed on the floor surface is lit and the pattern B such as an arrow is lit to evacuate. Display the route, etc., and evacuate safely and smoothly. Usually, the pattern A as a floor tile is displayed.

(7) Water (rainfall) detection information: When water is detected due to rain, a rain information message is emitted, and only symbol A is displayed during normal times.

(8) Time information: The display condition of the symbol B is controlled according to the preset time information.

[Storage method of multi-image display device of the present invention]
The multi-image display device of the present invention is characterized by having flexibility, and can be transported in a compact and light weight state to an installation place.

FIG. 6 is a schematic diagram showing an example of a state in which a multi-image display device having flexibility is stacked in a roll shape during conveyance.

As shown in FIG. 6, the multi-image display sheet constituting the multi-image display device (1) of the present invention is lightweight and flexible, and can be conveyed in a compact state laminated in a roll shape. Can be installed and is extremely easy to install.
[Example of Multi-Image Display Device of the Present Invention]
Next, a specific example of installation of the multi-image display device of the present invention will be described with reference to the drawings.

[Embodiment 1: Application Example 1 of Multi-Image Display Device of the Present Invention]
FIG. 7 is a schematic diagram showing an example of the multi-image display apparatus according to the first embodiment of the present invention installed on a soundproof panel on an expressway.

FIG. 7 shows an example in which a plurality of multi-image display devices (1) are arranged on the soundproof panel (16) installed on the shoulder of the highway (15), and only the pattern A (5) is reflected. In the case of displaying as an image, for example, at night, the surface-emitting panel is caused to emit light, and the symbol B (19) is displayed. A surface light emitter using an organic EL element or the like is gentle light, can give the driver peace and comfort, and can contribute to comfortable and safe driving. In addition, the multi-image display sheet according to the present invention has excellent flexibility and can be stably installed on a spherical surface such as a soundproof panel (16). In such a configuration, the symbol A and the symbol B may each be composed of a plurality of types of symbols.

[Embodiment 2: Application example 2 of multi-image display device of the present invention]
FIG. 8 is a schematic diagram showing an example of the multi-image display apparatus according to the second embodiment of the present invention installed on a soundproof wall of an expressway.

As shown in FIG. 8, a mounting portion is provided on the wall of the soundproof wall (17), and on the surface thereof. This is a specification for installing the multi-image display device (1) of the present invention having multi-images of symbol A (5) and symbol B (19). A mounting hole (18) is formed in the soundproof wall (17), and can be installed using, for example, a push-pull rivet. In such specifications, it is preferable that the multi-image display device of the present invention has sound absorption or sound insulation.

[Embodiment 3: Application example 3 of multi-image display device of the present invention]
FIG. 9 is a schematic diagram illustrating an example of the configuration of symbols A and B of the multi-image display sheet illustrated in FIGS. 7 and 8.

FIG. 9A shows, for example, the state of the pattern of the multi-image display sheet at daytime. In this case, the surface emitting panel does not emit light, and only the pattern A (5) printed on the design sheet is used. Is displayed as a reflection image.

On the other hand, FIG. 9B displays the design B (19) by causing the surface light emitting panel to emit light, for example, at night.

[Embodiment 4: Application Example 4 of Multi-Image Display Device of the Present Invention]
FIG. 10 is a schematic diagram showing an example of the symbol configuration of the multi-image display device of the present invention on a highway.

In the specification shown in FIG. 10, for example, in order to notify the driver of the approach of a target place (for example, a service area or an exit of a highway) as the vehicle travels, A relatively sparse symbol setting as shown in A, and as the target location approaches and the speed of the vehicle decreases, it can be changed to a dense symbol as shown in B or C of FIG. Good. Even in such a configuration, the symbol A and the symbol B may each be composed of a plurality of types of symbols.

[Embodiment 5: Application Example 5 of Multi-Image Display Device of the Present Invention]
FIG. 11A and FIG. 11B are schematic diagrams showing an example of a symbol B of an evacuation route displayed on a floor tile installed on an indoor floor as Embodiment 5 of the multi-image display device of the present invention.

This is a method of safely guiding visitors to the evacuation exit when a disaster such as a fire or an earthquake occurs on a floor tile laid on a floor or hallway in a hotel, a store, or many commercial facilities.

FIG. 11A is a normal state, in a state where the design A is displayed by the design sheet constituting the surface of the floor tile (20), and the hallway and the floor are covered with the design design. On the other hand, when information such as a fire or an earthquake is received by the external information sensor, the surface light emitter is caused to emit light and the evacuation guidance pattern (21) such as an arrow is displayed as the symbol B as shown in FIG. is there.

[Embodiment 6: Application Example 6 of Multi-Image Display Device of the Present Invention]
12A and 12B are schematic diagrams showing an example of symbol display on an art tile installed on an indoor floor as Embodiment 6 of the multi-image display device of the present invention.

As shown in FIG. 12A, art tiles are laid in the room, and usually the art design is displayed as design A. When a person approaches the art tile or the vicinity thereof, a pressure sensor or the like senses entry or approach. As shown in FIG. 12B, for example, a butterfly design or the like is displayed by emitting light with a surface light emitter.

[Embodiment 7: Application example 7 of multi-image display device of the invention]
FIG. 13 is a schematic view showing an example in which a plurality of types of symbols B are arranged on a wide multi-image display sheet installed on an indoor floor as an embodiment 7 of the multi-image display apparatus of the present invention.

In FIG. 13, an example in which a pattern A (5) and a plurality of patterns B (19A to 19F) are arranged by a plurality of surface light emitters on the multi-image display sheet constituting the multi-image display device (1) of the present invention. As shown, a variety of symbols B can be expressed.

[Embodiment 8: Application example 8 of multi-image display device of the invention]
FIG. 14A and FIG. 14B are schematic views showing an example of a message sheet provided with a human sensor installed on an indoor floor as an eighth embodiment of the multi-image display device of the present invention.

The message sheets shown in FIGS. 14A and 14B are installed on, for example, the floor of the entrance of a store, and in FIG. 14A, which is a normal state, the pattern A (5 printed on the design sheet on the surface of the message board (24). ) And an external information sensor (6), for example, a human pressure sensor placed on the floor, detects the customer's visit to the store, as shown in FIG. A method for displaying a message.

Hereinafter, other application examples of the multi-image display device of the present invention will be described, although description with reference to the drawings is omitted.

[Embodiment 9: Application example 9 of multi-image display device of the invention]
As another application example of the multi-image display device of the present invention, it can be used as a wrapping sheet including a surface light emitter on a vehicle body wall surface of a car, for example, a microbus or a large bus.

As a multi-image display device applicable to the ninth embodiment, a wrapping sheet on which a design A such as an advertisement is printed as a design sheet, and a plurality of different surface light emission patterns are provided between the wrapping sheet and the vehicle body wall surface. A configuration in which a plurality of panels are arranged to display symbol B. In the daytime, the wrapping sheet symbol A is mainly used to send messages and commercial information to passers-by, etc., and at night, the display method is switched to the wrapping sheet. The symbol B emitted by the surface light emitting panel is displayed on the top, and an impactful message for emitting light in a dark place can be provided.

Since the multi-image display device of the present invention has excellent flexibility, it can be stably and reliably applied even to a bus wall surface having many curved surfaces.

[Embodiment 10: Application example 10 of multi-image display device of the invention]
As another application example of the multi-image display device of the present invention, as a design sheet, in addition to the resin base sheet as described above, a paper design sheet printed with a pattern A or embroidery, weaving, dyeing, etc. A cloth design sheet on which the pattern A is formed can also be used.

For example, as an example of a fabric design sheet, Nishijin weaving that is a woven fabric or Yuzen dyeing that forms a pattern by dyeing is used as a design sheet that is arranged on the appreciation side. Display patterns such as Nishijin weaving as the display pattern, switch the display pattern at night, etc., light the surface-emitting panel installed on the back, for example, to express fireflies flying in the dark night, or summer events It can be provided as an elegant appreciation object by displaying the letters and designs such as “Large”, “Mystery”, “Law”, “Funagata”, “Torii”, etc. it can.

When using the cloth or paper as described above as a design sheet, it is preferable that these base materials are waterproofed in consideration of an outdoor exhibition.

[Embodiment 11: Application example 11 of multi-image display device of the invention]
As an example of application of the multi-image display device of the present invention, it can be applied to concert tickets and the like.

As the design A displayed on the design sheet, for example, a half mirror (magic mirror) film is used as a base sheet, and information on the holding information of the ticket (the date and time, the holding place, the opening time, the seat number, etc.) is displayed on the mirror. Print. Also, on the back of the half mirror, which is the design sheet, a plurality of surface light emitters are arranged with one surface light emitter as one pixel, and according to the surface light emitting panel light emission information obtained from the external information sensor, the concert light is displayed. It is also possible to provide a method for displaying a performer's photo, signature, message, and the like.

According to the present invention, it is a multi-image display device that can display a plurality of different symbols, has flexibility, is lightweight, and has excellent transportability and workability during installation. Provided is a multi-image display device capable of displaying a plurality of appropriate symbols according to various situations by being applied to an indoor floor surface, wall surface, vehicle body, exhibit, or the like.

DESCRIPTION OF SYMBOLS 1 Multi-image display apparatus 2 Multi-image display sheet 3 Design sheet 4 Surface emitting panel 5 Pattern A
5A High-density rendering area of pattern A 5B Low-density rendering area of pattern A 6 External information sensor 7 Light emission control section 8 Wiring 9 AC / DC power supply section 10 Waterproof connector 11 Base sheet 12 Mask member 12A Light shielding section 12B Light transmission section 13 Light-scattering film 14 Surface light emitter (organic EL element)
14A Non-light emitting area 14B Light emitting area 15 Expressway 16 Soundproof panel 17 Soundproof wall 18 Mounting hole 19 Pattern B (light emitting image)
20 Floor tile 21 Evacuation guide pattern 22 Art tile 23 Butterfly pattern 24

Message sheet

200, 400 Organic EL element 101 Transparent substrate 102 First electrode 103C First organic functional layer unit 103D Second organic functional layer unit 103E Third organic functional layer Unit 104B First intermediate electrode layer unit 104C Second intermediate electrode layer unit 142A First

intermediate electrode

142B, 143B Underlayer 143A Second intermediate electrode V1, V2, V3 Drive voltage 106 Second electrode h Light emission point L Light emission

Claims

A multi-image display sheet having a planar design sheet that forms a pattern A on a base sheet, a planar surface-emitting panel that displays a pattern B by light emission, and a multi-image display device having a power supply means,
A multi-image display device that independently displays a symbol A displayed by the design sheet and a symbol B displayed by light emission of the surface light emitting panel.
The multi-image display device according to claim 1, wherein the planar design sheet is a flexible design sheet.
3. The multi-image display device according to claim 1, wherein the planar surface light emitting panel is a flexible surface light emitting panel.
The multi-image according to any one of claims 1 to 3, further comprising an external information sensor, wherein the light emission of the surface-emitting panel is controlled according to external information obtained by the external information sensor. Display device.
The multi-image according to any one of claims 1 to 4, wherein an image displayed by the multi-image display sheet is displayed by a combination of the symbol A and the symbol B. Display device.
In the said design sheet, the pattern A formed in a base material sheet is provided in the viewing surface side surface of a base material sheet, the viewing surface side back surface, or a base material sheet, The claim 1 characterized by the above-mentioned. Item 6. The multi-image display device according to any one of Items 5 to 5.
The multi-image display device according to any one of claims 1 to 6, further comprising two or more surface emitting panels on the multi-image display sheet.
The multi-image according to any one of claims 1 to 7, wherein two or more of the surface light emitting panels are provided, and a pattern B to be displayed is different depending on each surface light emitting panel. Display device.
9. The multi-image display sheet includes two or more surface light emitting panels, and the two or more surface light emitting panels emit light under control of different light emission conditions. The multi-image display device according to any one of the above.
The said surface emitting panel has a white light emission function, the light emission function of each single color from which a hue differs, or the toning light emission function, It is any one of Claim 1-9 characterized by the above-mentioned. Multi-image display device.
The design B of the design sheet has the viewing surface side surface of the base sheet or the base sheet and the surface of the base sheet opposite to the viewing side is displayed by light emission. Correspondingly, a mask member for shielding light emission in a specific region is provided, and the multi-image display device according to any one of claims 1 to 10 is provided.
The light-emitting member which comprises the said light emission panel has a light emission part and a non-light-emission part, The said pattern B is comprised by the said light-emission part and a non-light-emission part, From Claim 1 to Claim 10 characterized by the above-mentioned. The multi-image display device according to any one of the above.
The multi-image display device according to any one of claims 1 to 12, wherein the light-emitting panel includes a light-scattering film on a light-emitting member.
The multi-image display device according to any one of claims 1 to 13, wherein a light-emitting member constituting the surface light-emitting panel is an organic electroluminescence element.
The external information for controlling the light emission of the surface light emitter is light information, sound information, human body detection information, vehicle detection information, smoke detection information, heat detection information, earthquake detection information, moisture detection information, or time information. The multi-image display device according to any one of claims 4 to 14, wherein the multi-image display device is characterized.
The multi-image display device according to any one of claims 1 to 15, wherein the design sheet is flame retardant or non-flammable.
The multi-image display device according to any one of claims 1 to 16, wherein the design sheet has a waterproof function, a sound absorbing function, or a photocatalytic function.