JP2005203333A - Electroluminescent light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electroluminescent light which is usable for any character and figure suitably used in an ornament, a signboard, a toy and a writing implement to emit light easily, requires no drying equipment, reduces user's burden and improves reliability and safety. <P>SOLUTION: The electroluminescent light of the present invention includes a rear electrode 3 formed on a substrate film 2, and a reflection insulating layer 4 and a luminescence layer 5 formed so as to cover the whole surface of the rear electrode 3. Further, it includes a transparent electrode adhesion layer 7 made of adhesive ion conductive polymer gel formed on a surface of the transparent film 6 facing with the luminescence layer 5, and spacers 8 consisting of grain-shaped resin beads of bridge polymethacrylic acid methyl and dispersedly formed on the transparent electrode adhesion layer 7. Moreover, the transparent electrode adhesion layer 7 and the luminescence layer 5 are arranged with a predetermined space by the spacers 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electroluminescent lamp suitable as a decoration, a signboard, a toy, an interior, and the like, and more particularly to an electroluminescent lamp that can easily emit any character or figure.

  An electroluminescent lamp that applies an alternating voltage between a transparent electrode and a back electrode to emit light entirely from the light emitting layer sandwiched between the two electrodes through the transparent electrode is used for a backlight of a liquid crystal display or the like. ing. Apart from this, there is an electroluminescent lamp in which a back electrode is divided for the purpose of character display such as characters and figures, and an AC voltage is applied to the divided back electrode to cause a light emitting layer to emit light. This is disclosed in Japanese Patent No. 8-153582.

  FIG. 12 is a cross-sectional view of a main part showing a configuration of a conventional electroluminescent lamp 121. A conventional electroluminescent lamp 121 is obtained by electrically bonding a conductive material such as copper or aluminum on an insulating base film 122 made of polyethylene terephthalate, polyimide, or the like with an adhesive or the like, and is electrically divided by means such as etching. The back electrodes 123a and 123b are formed in a comb shape, the reflective insulating layer 124 and the light emitting layer 125 are sequentially stacked on the back electrodes 123a and 123b, and the conductive and visible light transmitting layer is further formed on the light emitting layer 125. Paste (for example, paste in which indium tin oxide or antimony tin oxide is dispersed in acrylic melamine resin) or conductive and visible light transmissive ink (for example, indium tin oxide or antimony tin oxide) Pen with ink dispersed in liquid or water-soluble ink containing ionic surfactant) By drawing a predetermined shape Flip was, it is possible to form the transparent electrode 126.

Next, the light emission principle of the electroluminescent lamp 121 having such a configuration will be described. When a predetermined alternating voltage is applied to the back electrodes 123a and 123b, the reflective insulating layer 124 and the light emitting layer 125 have capacitance, so that a potential difference is generated between the back electrodes 123a and 123b and the transparent electrode 126. As a result, a high electric field is applied to the light emitting layer 125, and light is extracted from the light emitting layer 125 through the transparent electrode 126, which is a display electrode formed by the user in a desired predetermined shape by means such as coating or printing.
JP-A-8-153582 (pages 2 and 3, paragraphs 0012 to 0021, FIG. 1)

  However, the above-described conventional electroluminescent lamp 121 has the following problems.

  When the conductive paste is used as the transparent electrode 126 in order for the user to emit any character or figure, there is a problem that a dedicated drying facility is required.

  Further, when conductive ink is used as the transparent electrode 126, it is not necessary to dry it, but there is a problem that it is very troublesome to completely wipe off the conductive ink in order to quench the light.

  Further, when a water-soluble ink containing an ionic surfactant is used as a conductive ink for a long time, the ionic surfactant is attracted to an electric field and gradually penetrates into the light emitting layer 125 and the reflective insulating layer 124. Fatal problems such as reaching the back electrodes 123a and 123b and eventually corroding the back electrodes 123a and 123b due to insulation deterioration, causing the electroluminescent lamp 121 to be unlit.

  The present invention has been conceived to solve the above problems, and can easily emit any character or figure suitable as a decoration, signboard, toy, stationery, etc., and does not require a drying facility, and can be used by a user. An object of the present invention is to provide an electroluminescent lamp that reduces the burden on the lamp and greatly improves reliability and safety.

  In order to achieve the above object, an electroluminescent lamp according to claim 1 of the present invention includes a light emitting layer and a reflective insulating layer formed between a transparent electrode and a back electrode, and an AC voltage is applied to the transparent electrode and the back electrode. An electroluminescent lamp driven by application, wherein an adhesive layer and a spacer are provided on the surface of the transparent electrode facing the light emitting layer, and light is emitted by partially adhering and peeling the transparent electrode to the light emitting layer. , And quenching. According to this configuration, it is not necessary for the user to form and remove a transparent electrode when emitting or extinguishing an arbitrary character or figure, and it is possible to reduce the time and effort of drawing and to easily make an arbitrary character or figure. You can redraw as many times as you like. Further, since it is not necessary to use conductive ink as the transparent electrode, the transparent electrode does not penetrate into the light emitting layer and the reflective insulating layer, and problems such as insulation deterioration and corrosion of the back electrode do not occur.

  The electroluminescent lamp according to claim 2 is an electroluminescent lamp in which a light emitting layer and a reflective insulating layer are formed between a transparent electrode and a back electrode, and an AC voltage is applied to the transparent electrode and the back electrode. An adhesive layer and a spacer are provided on the side of the light emitting layer facing the transparent electrode, and light emission and quenching are performed by partially adhering and peeling the transparent electrode to the light emitting layer. . This configuration also eliminates the need for the user to form and remove a transparent electrode when emitting or extinguishing any character or figure, reducing the time and effort of drawing, and easily changing any character or figure. It can be redrawn even once. Further, since it is not necessary to use conductive ink as the transparent electrode, the transparent electrode does not penetrate into the light emitting layer and the reflective insulating layer, and problems such as insulation deterioration and corrosion of the back electrode do not occur.

  The electroluminescent lamp according to claim 3 is an electroluminescent lamp in which a light emitting layer and a reflective insulating layer are formed between a transparent electrode and a back electrode, and an AC voltage is applied to the transparent electrode and the back electrode. An adhesive layer and a spacer are provided on a surface of the back electrode facing the reflective insulating layer, and light emission and quenching are performed by partially bonding and peeling the back electrode to the reflective insulating layer. And This configuration also eliminates the need for the user to form and remove a transparent electrode when emitting or extinguishing any character or figure, reducing the time and effort of drawing, and easily changing any character or figure. It can be redrawn even once. Further, since it is not necessary to use conductive ink as the transparent electrode, the transparent electrode does not penetrate into the light emitting layer and the reflective insulating layer, and problems such as insulation deterioration and corrosion of the back electrode do not occur.

  The electroluminescent lamp according to claim 4 is an electroluminescent lamp which is driven by forming a light emitting layer and a reflective insulating layer between a transparent electrode and a back electrode, and applying an AC voltage to the transparent electrode and the back electrode. An adhesive layer and a spacer are provided on the surface of the reflective insulating layer facing the back electrode, and light emission and quenching are performed by partially bonding and peeling the back electrode to the reflective insulating layer. And This configuration also eliminates the need for the user to form and remove a transparent electrode when emitting or extinguishing any character or figure, reducing the time and effort of drawing, and easily changing any character or figure. It can be redrawn even once. Further, since it is not necessary to use conductive ink as the transparent electrode, the transparent electrode does not penetrate into the light emitting layer and the reflective insulating layer, and problems such as insulation deterioration and corrosion of the back electrode do not occur.

  The electroluminescent lamp according to claim 5 is driven by forming a light emitting layer and a reflective insulating layer between the transparent electrode and the back electrode divided into at least two or more, and applying an AC voltage to the back electrode. An electroluminescent lamp that emits and extinguishes by providing an adhesive layer and a spacer on the surface of the transparent electrode facing the light emitting layer, and partially bonding and peeling the transparent electrode to the light emitting layer. It is characterized by that. According to this configuration, power can be supplied from the same surface, and power loss due to the transparent electrode is greatly reduced, which is suitable for increasing the size of the electroluminescent lamp.

  The electroluminescent lamp according to claim 6 is driven by forming a light emitting layer and a reflective insulating layer between the transparent electrode and the back electrode divided into at least two or more, and applying an AC voltage to the back electrode. An electroluminescent lamp that emits and extinguishes by providing an adhesive layer and a spacer on the side of the light emitting layer facing the transparent electrode, and by partially bonding and peeling the transparent electrode to the light emitting layer. It is characterized by that. Also with this configuration, power can be supplied from the same surface, and power loss due to the transparent electrode is greatly reduced, which is suitable for increasing the size of the electroluminescent lamp.

  The electroluminescent lamp according to claim 7 is the electroluminescent lamp according to claim 1 or 2, wherein a transparent auxiliary electrode is provided above the light emitting layer, and the transparent auxiliary electrode is disposed between the spacers. It is characterized by doing. According to this configuration, since a current flows even if the transparent electrode is bonded to a part of the transparent auxiliary electrode, a stable light emitting area can be obtained even if the bonding area is small.

  The electroluminescent lamp according to claim 8 is the electroluminescent lamp according to claim 3 or 4, wherein a back surface auxiliary electrode is provided below the reflective insulating layer, and the back surface auxiliary electrode is interposed between the spacers. It is characterized by arranging. According to this configuration, since a current flows even when the back electrode is bonded to a part of the back auxiliary electrode, a stable light emitting area can be obtained even if the bonding area is small.

  The electroluminescent lamp according to claim 9 is the electroluminescent lamp according to any one of claims 1 to 8, wherein the light emitting layer and the reflective insulating layer are separately formed, and the light emitting layer and the reflective layer are formed. An insulating layer is disposed between the spacers. According to this structure, since the usage-amount of the light emitting layer and reflection insulating layer which occupy about 40 to 60% of the material cost in an electroluminescent lamp decreases, manufacturing cost can be reduced.

  An electroluminescent lamp according to a tenth aspect is the electroluminescent lamp according to any one of the first to ninth aspects, wherein a mesh auxiliary electrode is disposed so as to be in contact with the transparent electrode. According to this configuration, the resistance of the transparent electrode is reduced by the mesh auxiliary electrode, so that the current flowing through the transparent electrode is reduced, the power loss is greatly reduced, and the reduction in luminance due to the increase in size of the electroluminescent lamp is suppressed. can do.

  The electroluminescent lamp according to claim 11 is the electroluminescent lamp according to claim 10, wherein the mesh auxiliary electrode is arranged on a spacer. According to this configuration, a mesh auxiliary electrode with high dimensional accuracy can be easily formed.

  An electroluminescent lamp according to a twelfth aspect is the electroluminescent lamp according to the eleventh aspect, wherein a water / oil repellent layer is disposed on a side of the spacer facing the light emitting layer. According to this configuration, the peelability of the adhesive layer and the spacer is improved by the water / oil repellent layer, so that the adhesive layer can be prevented from remaining on the portion in front of the spacer in contact with the light emitting layer after long-term use.

  The electroluminescent lamp according to claim 13 is the electroluminescent lamp according to claim 12, wherein the water- and oil-repellent layer contains at least one kind of fluorine-based resin, silicon-based resin, and epoxy-based resin. It is made of a material. According to this configuration, since a material having high transparency and excellent water and oil repellency is used, the peelability of the adhesive layer and the spacer can be improved without impairing the characteristics of the electroluminescent lamp.

  The electroluminescent lamp according to claim 14 is the electroluminescent lamp according to any one of claims 1 to 13, wherein an adhesive adjusting layer is disposed on a surface side opposite to the adhesive layer. . According to this configuration, since the peelability of the adhesive layer and the light emitting layer or the reflective insulating layer is improved by the adhesive adjustment layer, transfer of the adhesive layer to the light emitting layer or the reflective insulating layer due to long-term use can be prevented.

  The electroluminescent lamp according to claim 15 is the electroluminescent lamp according to claim 14, wherein the adhesion adjusting layer is made of a protective film or a granular resin bead. According to this structure, since both the protective film and the granular resin beads have a smooth surface and low surface energy, an excellent peeling effect is exhibited. As a result, the peelability between the pressure-sensitive adhesive layer and the light-emitting layer or the reflective insulating layer is improved, so that the transfer of the pressure-sensitive adhesive layer to the light-emitting layer or the reflective insulating layer after long-term use can be prevented.

  The electroluminescent lamp according to claim 16 is the electroluminescent lamp according to claim 15, wherein the protective film is at least PVDF (polyvinylidene fluoride), PVDC (polyvinylidene chloride) and PET (polyethylene terephthalate). One or more types are included. According to this configuration, since the protective film having a high relative dielectric constant and a small thickness is used, sufficient electric field strength is applied to the light emitting layer, and the luminance of the electroluminescent lamp can be improved.

  The electroluminescent lamp according to claim 17 is the electroluminescent lamp according to any one of claims 1, 2, 5, 6, and 10, wherein the transparent electrode is an ion conductive polymer gel, indium oxide. And a transparent conductive material containing at least one of tin oxide, antimony oxide, zinc oxide and a conductive polymer. According to this configuration, since a material having a low resistance value is used for the transparent electrode, the power loss is reduced and the luminance and the battery life can be improved.

  The electroluminescent lamp according to claim 18 is the electroluminescent lamp according to claim 3 or 4, wherein the back electrode is an ion conductive polymer gel, indium oxide, tin oxide, antimony oxide, zinc oxide, It is made of a conductive material containing at least one of carbon, aluminum, nickel, copper, silver, platinum, gold, and a conductive polymer. According to this configuration, since a material having a low resistance value is used for the back electrode, the power loss is reduced and the brightness and battery life can be improved.

  The electroluminescent lamp according to claim 19 is the electroluminescent lamp according to claim 7, wherein the transparent auxiliary electrode is at least one of indium oxide, tin oxide, antimony oxide, zinc oxide, and a conductive polymer. It consists of the transparent conductive material containing the above, It is characterized by the above-mentioned. According to this configuration, since a material having a low resistance value is used for the transparent auxiliary electrode, the power loss is reduced and the luminance and the battery life can be improved.

  The electroluminescent lamp according to claim 20 is the electroluminescent lamp according to claim 8, wherein the back surface auxiliary electrode is indium oxide, tin oxide, antimony oxide, zinc oxide, carbon, aluminum, nickel, copper, It consists of a conductive material containing at least one of silver, platinum, gold, and a conductive polymer. According to this configuration, since a material having a low resistance value is used for the back surface auxiliary electrode, the power loss is reduced and the luminance and the battery life can be improved.

  The electroluminescent lamp according to claim 21 is the electroluminescent lamp according to any one of claims 1 to 11, wherein the spacer is a granular resin bead, mesh polyester fiber, or screen-printed insulation. It consists of a characteristic paste. According to this configuration, since a spacer with high dimensional accuracy can be easily formed, the adhesion area between the transparent electrode and the light emitting layer can be controlled, stable light emission and quenching can be performed, and the light emitting region can be divided finely. The display definition can be improved.

  The electroluminescent lamp according to claim 22 is the electroluminescent lamp according to claim 15 or 21, wherein the granular resin beads are crosslinked polymethyl methacrylate, acrylic resin, styrene resin, polyester resin. And a material containing at least one kind of polycarbonate-based resin. According to this configuration, since a soft material is used, each layer of the electroluminescent lamp is not deformed or damaged even when pressed from above.

  The electroluminescent lamp according to claim 23 is the electroluminescent lamp according to claim 21, wherein the insulating paste comprises a polyester resin, an acrylic resin, a urethane resin, a phenol resin, a melamine resin, and It consists of the material containing at least 1 or more types of epoxy resin. According to this configuration, since a spacer with high dimensional accuracy can be formed, the adhesion area between the transparent electrode adhesive layer and the light emitting layer, or the back electrode adhesive layer and the reflective insulating layer can be easily controlled.

  According to the electroluminescent lamp of the present invention, the adhesive layer and the spacer are provided between the transparent electrode and the light emitting layer, and the user presses and draws an arbitrary character or figure using a pressing jig. Only the portion drawn with the electrode and the light emitting layer partially bonded can be made to emit light. Further, the transparent electrode can be easily extinguished by mechanically peeling it off the light emitting layer. Thereby, when the user emits or extinguishes an arbitrary character or figure, it is not necessary to use conductive paste or conductive ink, and it is not necessary to wipe off with water or a solvent. As a result, drying equipment used for film-forming drying of the conductive paste is not necessary, and the burden on the user for drawing out the conductive ink can be reduced. Furthermore, problems such as insulation degradation and corrosion of the back electrode caused by the conductive ink can be solved.

  Also, by providing an adhesive layer and a spacer between the reflective insulating layer and the back electrode, the user presses and draws any character or figure using a pressing jig, so that the reflective insulating layer and the back surface Only the portion drawn with the electrodes partially adhered can be made to emit light. Further, the reflective insulating layer can be easily extinguished by mechanically peeling it from the back electrode. Furthermore, according to this structure, the adhesion layer does not need to be transparent, and the selection range of a material expands significantly. Thereby, since the material excellent in electroconductivity can be used, the power loss of an electroluminescent lamp can further be reduced, and a brightness | luminance and battery life can be improved more. Moreover, since it presses on a transparent film with a pressing jig and it is made to light-emit, an excessive force is not added to an adhesion layer. Thereby, since the deformation amount of the adhesive layer is reduced, the resistance value can be stabilized and the service life can be extended.

  In addition, if a transparent auxiliary electrode or a back auxiliary electrode is provided on the upper part of the light emitting layer or the lower part of the reflective insulating layer, a stable light emitting area can be obtained even with a small adhesion area. Quenching property can be improved.

  Also, if the back electrode is formed separately, power loss due to the transparent electrode can be reduced, which is suitable for increasing the size of the electroluminescent lamp, and if the light emitting layer and the reflective insulating layer are formed separately, the manufacturing cost of the electroluminescent lamp is reduced. Can be greatly reduced. Thereby, the electroluminescent lamp suitable as a decoration, a signboard, a toy, an interior, etc. which improved the luminescent property, erasability, and reliability of a character and a figure significantly can be obtained.

  If the mesh auxiliary electrode is provided on the transparent electrode, the resistance of the transparent electrode can be reduced, the power loss due to the transparent electrode can be reduced, and it is suitable for increasing the size of the electroluminescent lamp.

  Also, if a water / oil repellent layer is provided on the side of the spacer facing the light emitting layer, the transparent electrode adhesive layer can be prevented from remaining on the front surface of the spacer, and a highly reliable electric field that prevents unnecessary light emission. A luminous lamp can be obtained.

  In addition, if an adhesion adjusting layer is provided on the light emitting layer or the reflective insulating layer, transfer of the transparent electrode adhesive layer or the back electrode adhesive layer can be prevented, and a highly reliable electroluminescent lamp that prevents unnecessary light emission. Can be obtained.

  Hereinafter, preferred embodiments of the electroluminescent lamp of the present invention will be described with reference to the drawings. FIG. 1A is a cross-sectional view of the main part of the electroluminescent lamp 1 according to the first embodiment of the present invention. FIGS. 1B and 1C are main parts for explaining the light emission and quenching method of the electroluminescent lamp 1. It is sectional drawing.

  As shown in FIG. 1 (a), an electroluminescent lamp 1 of the present invention includes a base film 2 made of polyethylene, polyester, polyethylene terephthalate, polyimide, or the like, and a conductive material such as copper or aluminum formed thereon. Is coated with an adhesive, etc., a reflective insulating layer 4 in which a high dielectric powder made of barium titanate is dispersed in fluororubber, and zinc sulfide is activated with copper to provide a moisture-proof coating. The light emitting layer 5 formed by dispersing the phosphor thus prepared in fluororubber is provided. On the other hand, a transparent electrode adhesive layer 7 made of an ion conductive polymer gel having adhesiveness and translucency, formed on the side facing the light emitting layer 5 of the transparent film 6 made of polyethylene, polyester, polyethylene terephthalate, etc. A spacer 8 made of crosslinked polymethyl methacrylate granular resin beads dispersedly formed on the transparent electrode adhesive layer 7 is provided. The transparent electrode adhesive layer 7 and the light emitting layer 5 are installed with a predetermined distance apart by a spacer 8.

  Next, the light emission and quenching method of the electroluminescent lamp 1 of the present embodiment will be described with reference to FIGS. First, as shown in FIG. 1 (b), the light emitting method applies a predetermined AC voltage to the transparent electrode adhesive layer 7 and the back electrode 3, and then presses the jig 9 (for example, a pen (no conductive ink is required). ), Using a stick, a stylus, a thin stick-like object, or a finger), press the transparent film 6 where the character or figure is to be displayed from above. The pressed transparent film 6 and transparent electrode adhesive layer 7 are deformed into a concave shape, and the transparent electrode adhesive layer 7 comes into contact with the light emitting layer 5. At this time, since the transparent electrode adhesive layer 7 is formed of an ion conductive polymer gel having adhesiveness, the transparent electrode adhesive layer 7 is adhered and held to the light emitting layer 5 by the adhesive force of the polymer gel. Then, a high electric field is applied to the light emitting layer 5 where the transparent electrode adhesive layer 7 is adhered and held, and light is emitted. That is, the portion pressed by the pressing jig 9 immediately emits light as an arbitrary character or figure. Next, when quenching, as shown in FIG. 1 (c), the transparent electrode adhesive layer 7 and the light emitting layer 5 are lifted by raising both sides or one side of the transparent electrode adhesive layer 7 upward by a predetermined height. Mechanically peel off the bonded part. Thereby, the light emitting layer 5 is insulated and quenched.

  Thus, in the electroluminescent lamp 1 of the present embodiment, the spacer 8 is provided between the transparent electrode adhesive layer 7 and the light emitting layer 5 to form a predetermined gap, and the adhesive force of the transparent electrode adhesive layer 7 is utilized. By adhering to and peeling from the light emitting layer 5, any character or figure can be emitted and extinguished stably any number of times.

  In this embodiment, an ion conductive polymer gel is used as the material of the transparent electrode adhesive layer 7. However, since the electrolyte is fixed in the polymer gel, the inside of the light emitting layer 5 and the reflective insulating layer 4 is used. There is no soaking in. In addition to ion conductive polymer gel, transparent conductive polymer such as indium oxide, tin oxide, antimony oxide, zinc oxide, or polyaniline, polyethylenedioxythiophene is dispersed in an adhesive and formed by screen printing. You may make it do. These conductive materials may be used singly or as a mixture of two or more kinds, or may be a multilayer film. Further, the transparent electrode adhesive layer 7 may be provided under the deposited ITO film.

  Next, an electroluminescent lamp according to a second embodiment of the present invention will be described with reference to the drawings. FIGS. 2A and 2B are cross-sectional views of the main parts of the electroluminescent lamps 21a and 21b of the second embodiment. A feature of the electroluminescent lamps 21a and 21b of the present embodiment is that the transparent electrode adhesive layer described in the first embodiment is separated into two layers of a transparent electrode and an adhesive layer. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 2 (a), the electroluminescent lamp 21a of this example includes a transparent electrode 22 made of ITO formed by vapor deposition on the surface of the transparent film 6 facing the light emitting layer 5, and an acrylic adhesive. An adhesive layer 23 made of an agent and a spacer 8 made of granular resin beads such as crosslinked polymethyl methacrylate are provided. On the other hand, as shown in FIG. 2 (b), the electroluminescent lamp 21 b is provided with a transparent electrode 22 on the surface side of the transparent film 6 facing the light emitting layer 5, and the surface side of the light emitting layer 5 facing the transparent electrode 22. Further, an adhesive layer 23 and a spacer 8 are provided. As described above, the electroluminescent lamps 21a and 21b of the present embodiment separate the transparent electrode adhesive layer into two layers of the transparent electrode 22 and the adhesive layer 23, and use ITO having a low resistance value for the transparent electrode 22. The power loss of the transparent electrode 22 can be reduced, and the brightness and battery life can be improved.

  Next, an electroluminescent lamp according to a third embodiment of the present invention will be described with reference to the drawings. 3A to 3D are cross-sectional views of main parts of the electroluminescent lamps 31a to 31d of the third embodiment. A feature of the electroluminescent lamps 31a to 31d of the present embodiment is that an adhesive layer and a spacer are provided between the reflective insulating layer and the back electrode.

  As shown in FIG. 3 (a), the electroluminescent lamp 31a of this example is composed of a base film 32 made of polyethylene, polyester, polyethylene terephthalate, polyimide or the like, and an ion conductive material having adhesive properties formed thereon. A back electrode adhesive layer 33 made of a polymer gel is provided. Further, on the side facing the back electrode adhesive layer 33, a reflective insulating layer 34 in which a high dielectric powder made of barium titanate is dispersed in fluororubber, and a zinc sulfide activated with copper to form a moisture-proof coating. A light emitting layer 35 in which the applied phosphor is dispersed in fluororubber is provided on a transparent electrode 37 made of ITO formed by vapor deposition on a transparent film 36 made of polyethylene, polyester, polyethylene terephthalate or the like. Furthermore, spacers 38 made of crosslinked polymethyl methacrylate granular resin beads are dispersedly formed on the back electrode adhesive layer 33, and the reflective insulating layer 34 and the back electrode adhesive layer 33 are separated from each other by a predetermined distance. Installed.

  The light emission and quenching method of the electroluminescent lamp 31a of the present embodiment is such that, after applying a predetermined alternating voltage to the transparent electrode 37 and the back electrode adhesive layer 33, it is reflected from above the transparent film 36 by a pressing jig. The insulating layer 34 and the back electrode adhesive layer 33 are bonded and held to emit light. When quenching, the light emitting layer 5 is insulated by mechanically peeling the reflective insulating layer 34 and the back electrode adhesive layer 33.

  Thus, in the electroluminescent lamp 31a of this embodiment, the spacer 38 is provided between the reflective insulating layer 34 and the back electrode adhesive layer 33 to form a predetermined gap, and the adhesive force of the back electrode adhesive layer 33 is used. By adhering to and peeling off from the reflective insulating layer 34, it is possible to stably emit and extinguish any character or figure any number of times. Further, since the back electrode adhesive layer 33 made of an ion conductive polymer gel is provided below the light emitting layer 35, it does not have to be transparent as in the first embodiment, and can be used even with an opaque material. This greatly expands the material selection range. Further, since the light is emitted from the transparent film 36 by pressing with the pressing jig, an excessive force is not applied to the back electrode adhesive layer 33. Thereby, since the deformation amount of the back surface electrode adhesive layer 33 is reduced, the resistance value is stabilized, and the service life of the electroluminescent lamp 31a can be extended.

  In this embodiment, ion conductive polymer gel is used as the material of the back electrode adhesive layer 33, but indium oxide, tin oxide, antimony oxide, zinc oxide, carbon, aluminum, nickel, copper, silver, platinum Alternatively, gold and a conductive polymer may be dispersed in an adhesive and formed by screen printing. These conductive materials may be used singly or as a mixture of two or more kinds, or may be a multilayer film. In particular, if carbon, aluminum, nickel, copper, silver, platinum, or gold is used, the conductivity is superior to that of the constituent material of the transparent electrode adhesive layer 7 of the first embodiment. Further reduction can be achieved, and brightness and battery life can be further improved.

  Further, as another configuration of the present embodiment, as in the electroluminescent lamp 31b shown in FIG. 3B, a conductive material such as copper or aluminum is adhered to the base film 32 with an adhesive or the like. The back electrode 39 may be provided, and the back electrode adhesive layer 33 and the spacer 38 may be provided thereon. Further, as in an electroluminescent lamp 31c shown in FIG. 3C, a back electrode 39 formed by adhering a conductive material such as copper or aluminum with an adhesive or the like is provided on a base film 32 to provide an acrylic adhesive. You may make it provide the adhesion layer 40 and spacer 38 which consist of an agent. Further, as in the electroluminescent lamp 31d shown in FIG. 3D, a back electrode 39 formed by adhering a conductive material such as copper or aluminum with an adhesive or the like is provided on the base film 32, and reflection insulation is provided. You may make it provide the adhesion layer 40 and the spacer 38 which consist of an acrylic adhesive on the layer 34 side.

  Thus, since the electroluminescent lamps 31b to 31d of this embodiment use copper or aluminum having a low resistance value for the back electrode 39, the power loss of the back electrode 39 can be further reduced, and the luminance and battery life are further improved. Can be made.

  Next, an electroluminescent lamp according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4A is a cross-sectional view of the main part of the electroluminescent lamp 41 of the fourth embodiment, and FIGS. 4B and 4C are diagrams illustrating the effects of the electroluminescent lamp 41 of the fourth embodiment. FIG. The feature of the electroluminescent lamp 41 of the present embodiment is that a transparent auxiliary electrode having translucency is provided on the light emitting layer, and the transparent auxiliary electrode is disposed between the spacers. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  In the electroluminescent lamp 41 of this embodiment, a transparent auxiliary electrode 42 made of ITO is formed on the light emitting layer 5 by screen printing. Further, the transparent auxiliary electrode 42 is disposed between the spacers 8 formed in a dispersed manner on the transparent electrode adhesive layer 7.

  Next, the reason why the transparent auxiliary electrode 42 is provided will be described with reference to FIGS. As shown in FIG. 4B, in the electroluminescent lamp 1 of the first embodiment described above, the transparent electrode adhesive layer 7 is pressed against the light emitting layer 5, and both are adhered and held to emit light. At this time, in order to emit light stably, it is better to widen the space between the spacers 8 and increase the adhesion area between the transparent electrode adhesive layer 7 and the light emitting layer 5. On the other hand, in the case of quenching, in order to facilitate the peeling, as shown in FIG. 4C, it is preferable to reduce the space between the spacers 8 and reduce the adhesion area between the transparent electrode adhesive layer 7 and the light emitting layer 5. Good. The balance between the spacers 8 determines the distance between the spacers 8. However, since the light emitting area decreases in proportion to the decrease in the bonding area, the light emission of characters and figures weakens and the visibility deteriorates. Occurs.

  In order to solve this, as shown in FIG. 4A, the electroluminescent lamp 41 of this embodiment is provided with a transparent auxiliary electrode 42 having translucency on the light emitting layer 5 and the transparent auxiliary electrode. 42 is arranged in the part where the transparent electrode adhesive layer 7 between the spacers 8 adheres. In this way, when the transparent film 6 is pressed from above, the transparent electrode adhesive layer 7 adheres to a part of the transparent auxiliary electrode 42 and a current flows, and a high electric field is generated in the light emitting layer 5 below the transparent auxiliary electrode 42. Therefore, even if the adhesion area is small, a stable light emitting area can be obtained, and both light emitting properties and quenching properties can be achieved. As a material of the transparent auxiliary electrode 42, a transparent conductive polymer such as indium oxide, tin oxide, antimony oxide, zinc oxide, polyaniline, or polyethylenedioxythiophene can be used. These conductive materials may be used singly or as a mixture of two or more kinds, or may be a multilayer film. This configuration can also be applied to the electroluminescent lamp of the second embodiment described above.

  Next, an electroluminescent lamp according to a fifth embodiment of the present invention will be described with reference to the drawings. FIGS. 5A to 5D are cross-sectional views of main parts of electroluminescent lamps 51a to 51d of the fifth embodiment. The features of the electroluminescent lamps 51a to 51d of the present embodiment are that a back surface auxiliary electrode is provided below the reflective insulating layer and the back surface auxiliary electrode is disposed between the spacers. Other configurations are the same as those of the third embodiment, and therefore, the same reference numerals are given and description thereof is omitted.

  In the electroluminescent lamp 51a of this embodiment, the back auxiliary electrode 52 made of carbon is formed on the lower portion of the reflective insulating layer 34 by screen printing. Further, the back auxiliary electrode 52 is disposed between the spacers 38 formed in the back conductive adhesive layer 33 in a dispersed manner.

  The reason why the back surface auxiliary electrode 52 is provided is the same as that of the fourth embodiment described above. When the transparent film 36 is pressed from above, the back surface electrode adhesive layer 33 adheres to a part of the back surface auxiliary electrode 52 and current flows. Since a high electric field is applied to the light emitting layer 35 on the back surface auxiliary electrode 52 to emit light, a stable light emitting area can be obtained even if the adhesion area is small, and both light emitting properties and quenching properties can be achieved. As the material of the back auxiliary electrode 52, indium oxide, tin oxide, antimony oxide, zinc oxide, carbon, aluminum, nickel, copper, silver, platinum, gold, and a conductive polymer can be used. These conductive materials may be used singly or as a mixture of two or more kinds, or may be a multilayer film. In particular, if carbon, aluminum, nickel, copper, silver, platinum, or gold is used, the electrical conductivity is superior to the constituent material of the transparent auxiliary electrode 42 of the fourth embodiment, so that the power loss of the back auxiliary electrode 42 is further reduced. The brightness and battery life can be further improved.

  Further, as another configuration of the present embodiment, as in an electroluminescent lamp 51b shown in FIG. 5B, a conductive material such as copper or aluminum is bonded on the base film 32 with an adhesive or the like. The back electrode 39 may be provided, and the back electrode adhesive layer 33 and the spacer 38 may be provided thereon. Further, as in the electroluminescent lamp 51c shown in FIG. 5 (c), a back electrode 39 formed by adhering a conductive material such as copper or aluminum with an adhesive or the like is provided on the base film 32, and the back electrode 39 is provided thereon. You may make it provide the adhesion layer 40 and the spacer 38 which consist of acrylic adhesives. Further, as in the electroluminescent lamp 51d shown in FIG. 5D, a back electrode 39 formed by adhering a conductive material such as copper or aluminum with an adhesive or the like is provided on the base film 32, and reflection insulation is provided. The adhesive layer 40 and the spacer 38 may be provided on the layer 34 side.

  Thus, since the electroluminescent lamps 51b to 51d of the present embodiment use copper or aluminum having a low resistance value for the back electrode 39, the power loss of the back electrode 39 can be further reduced, and the luminance and the battery life are further improved. Can be made.

  Next, an electroluminescent lamp according to a sixth embodiment of the present invention will be described with reference to the drawings. 6A to 6C are cross-sectional views of the main parts of the electroluminescent lamps 61a to 61c of the sixth embodiment. The features of the electroluminescent lamps 61a to 61c of the present embodiment are that the back electrode is divided and the AC voltage is applied to the back electrode.

  As shown in FIG. 6A, the electroluminescent lamp 61a of this example was divided and formed in, for example, a comb shape by screen printing on a base film 62 made of polyethylene, polyester, polyethylene terephthalate, polyimide, or the like. Dispersed in fluororubber are back electrodes 63a and 63b made of conductive paste such as carbon, silver, copper and nickel, and high dielectric powder made of barium titanate formed so as to cover the entire surface of back electrodes 63a and 63b. And a light emitting layer 65 in which a phosphor obtained by activating zinc sulfide with copper and applying a moisture-proof coating is dispersed in fluororubber. On the other hand, on the surface facing the light emitting layer 65 of the transparent film 66 made of polyethylene, polyester, polyethylene terephthalate or the like, a transparent electrode adhesive layer 67 made of an ion conductive polymer gel having adhesiveness and translucency, and transparent Spacers 68 made of crosslinked polymethyl methacrylate granular resin beads dispersedly formed on the electrode adhesive layer 67 are provided. The transparent electrode adhesive layer 67 and the light emitting layer 65 are installed at a predetermined distance by a spacer 68.

  In the light emitting method of the electroluminescent lamp 61a of the present embodiment, the transparent electrode adhesive layer 67 emits light by applying a predetermined alternating voltage to the back electrodes 63a and 63b and then pressing from the transparent film 66 with a pressing jig. Adhered to layer 65. A potential difference is generated between the back electrodes 63a and 63b and the transparent electrode adhesive layer 67, and a high electric field is applied to the light emitting layer 65 to emit light. When quenching, the transparent electrode adhesive layer 67 and the light emitting layer 65 are mechanically peeled to insulate the light emitting layer 65 as in the first embodiment.

  Thus, since the electroluminescent lamp 61a of the present embodiment is formed by dividing the back electrodes 63a and 63b, power can be supplied from the same surface, and it is not necessary to pass a current through the entire transparent electrode adhesive layer 67. The power loss due to is greatly reduced, which is suitable for increasing the size of the electroluminescent lamp 61a.

  Moreover, as shown in FIG.6 (b), the transparent electrode 69 which consists of ITO formed by vapor deposition and the adhesion layer 70 which consists of an acrylic adhesive are provided in the surface side facing the light emitting layer 65 of the transparent film 66, Spacers 68 may be dispersedly formed on the adhesive layer 70. Further, as shown in FIG. 6C, a transparent electrode 69 is provided on the side of the transparent film 66 facing the light emitting layer 65, and an adhesive layer 70 is provided on the light emitting layer 65, and the adhesive layer 70 is provided with a spacer. 68 may be dispersedly formed.

  In the electroluminescent lamps 61a to 61c of the present embodiment, the back electrodes 63a and 63b are formed by screen-printing a conductive paste such as carbon, silver, copper, or nickel. After selectively printing the agent and depositing a metal such as aluminum, the resist layer may be washed and formed. Alternatively, after a metal such as aluminum is pasted on the base film 62, it is formed by chemical etching. Also good. In this case, the resistance values of the back electrodes 63a and 63b are low, which is more suitable for increasing the size of the electroluminescent lamp. Furthermore, the shape of the back electrodes 63a and 63b is not limited to a comb shape, and any shape may be used as long as it is an electrode structure that is electrically divided.

  Next, an electroluminescent lamp according to a seventh embodiment of the present invention will be described with reference to the drawings. FIGS. 7A and 7B are a cross-sectional view and a plan view of an essential part of the electroluminescent lamp 71a of the seventh embodiment, and FIGS. 7C and 7D show other configurations of the seventh embodiment. It is principal part sectional drawing of the electroluminescent lamps 71b and 71c. The feature of the electroluminescent lamp 71a of the present embodiment is that the light emitting layer and the reflective insulating layer are separately formed and arranged between the spacers. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  In the electroluminescent lamp 71a of this embodiment, a moisture-proof coating is formed by activating a reflective insulating layer 72 in which high dielectric powder made of barium titanate is dispersed in fluororubber and zinc sulfide with copper on the back electrode 3. A light emitting layer 73 formed by dispersing the phosphor subjected to the above process in fluorine rubber is divided and formed by screen printing, and a binder layer 74 made of fluorine rubber is formed therebetween by screen printing.

  Furthermore, as shown in FIGS. 7A and 7B, the light-emitting layer 73 and the reflective insulating layer 72 that are dispersedly formed are disposed between the spacers 8 that are dispersedly formed on the transparent electrode adhesive layer 7, and transparent The electrode adhesive layer 7 is bonded or peeled off from the light emitting layer 73 to emit or extinguish any character or figure.

  Next, the reason why the light emitting layer 73 and the reflective insulating layer 72 are formed separately will be described. Both high-dielectric powders composed of a phosphor obtained by activating zinc sulfide used for the light-emitting layer 73 with a moisture-proof coating and a barium titanate used for the reflective insulating layer 72 are expensive, and an electroluminescent lamp Accounted for about 40-60% of the material cost. Therefore, by forming the light emitting layer 73 and the reflective insulating layer 72 only in the region contributing to light emission, the usage amount of the phosphor and the high dielectric powder can be reduced, and the manufacturing cost of the electroluminescent lamp 71 can be reduced. Further, the present structure in which the light emitting layer 73 and the reflective insulating layer 72 are formed separately is, for example, the second embodiment to the sixth embodiment described above, like the electroluminescent lamps 71b and 71c shown in FIGS. The present invention can also be applied to the electroluminescent lamp of the embodiment.

  Next, an electroluminescent lamp according to an eighth embodiment of the present invention will be described with reference to the drawings. 8A is a cross-sectional view of the main part of the electroluminescent lamp 81a of the eighth embodiment, FIG. 8B is a perspective view of the spacer and the mesh auxiliary electrode in FIG. 8A, and FIG. It is principal part sectional drawing of the electroluminescent lamp 81b of the other structure of 8 Example. The feature of the electroluminescent lamp 81a of this embodiment is that a mesh auxiliary electrode is provided on the transparent electrode adhesive layer of the electroluminescent lamp described in the first embodiment. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIGS. 8 (a) and 8 (b), the electroluminescent lamp 81a of the present example has a high ion conductivity having adhesiveness and translucency on the side of the transparent film 6 facing the light emitting layer 5. A transparent electrode adhesive layer 7 made of molecular gel and a spacer 82 made of mesh polyester fiber are newly provided. Further, on one side of the spacer 82, a mesh auxiliary electrode 83 formed by printing and drying a metal paste containing one or more of carbon, silver, copper, nickel, and aluminum so as to be in contact with the transparent electrode adhesive layer 7. Is provided.

  The light emission and quenching method of the electroluminescent lamp 81a of this example is such that after applying a predetermined AC voltage to the transparent electrode adhesive layer 7 and the back electrode 3, the spacer is pressed from above the transparent film 6 with a pressing jig. The transparent electrode pressure-sensitive adhesive layer 7 and the light-emitting layer 5 with 82 openings are adhered and held to emit light. When quenching, the transparent electrode adhesive layer 7 and the light emitting layer 5 are mechanically peeled off and the light emitting layer 5 is insulated.

  Since the electroluminescent lamp 81a of this embodiment is provided with the spacer 82 made of the mesh-like polyester fiber on the transparent electrode adhesive layer 7, the size is larger than that of the particle-shaped resin beads dispersedly formed on the transparent electrode adhesive layer 7. A highly accurate spacer 82 can be easily formed, and display with higher definition becomes possible. Further, a low resistance mesh auxiliary electrode 83 made of at least one of carbon, silver, copper, nickel and aluminum is formed on the transparent electrode adhesive layer 7 side of the spacer 82 and bonded to the transparent electrode adhesive layer 7. Therefore, the resistance of the transparent electrode adhesive layer 7 can be further reduced. Thereby, since the electric current which flows into the transparent electrode adhesion layer 7 becomes small and a power loss is reduced significantly, the luminance fall accompanying the enlargement of the electroluminescent lamp 81a can be suppressed.

  Further, in the present configuration in which the mesh auxiliary electrode 83 is provided on the transparent electrode adhesive layer 7, for example, as shown in FIG. 8C, the transparent electrode adhesive layer 7 of the second embodiment shown in FIG. The present invention can also be applied to an electroluminescent lamp 81b separated into two layers 22 and an adhesive layer 23. Since the mesh auxiliary electrode 83 is bonded to the transparent electrode 22 through the adhesive layer 23, the current flowing through the transparent electrode 22 is reduced, the power loss is greatly reduced, and the electroluminescent lamp 81b is enlarged. A reduction in luminance can be suppressed.

  Although not shown, the present invention can also be applied to a configuration in which the back electrode of the sixth embodiment shown in FIG. When the back electrode is divided and formed, power can be supplied from the same surface and it is not necessary to pass a current through the entire transparent electrode adhesive layer. Furthermore, since the power loss due to the transparent electrode adhesive layer is further greatly reduced by applying this configuration, it is more suitable for increasing the size of the electroluminescent lamp.

  In addition, the mesh auxiliary electrode 83 is formed by electroless plating other than printing and drying a metal paste such as carbon, silver, copper, nickel, and aluminum on the spacer 82 made of mesh-like polyester fiber as described above. Thus, copper, nickel, or the like may be formed on the spacer 82 made of mesh-like polyester fibers, or a stainless mesh may be used directly. Furthermore, a metal paste such as carbon, silver, copper, nickel, or aluminum may be directly printed on the transparent film 6 in a mesh shape and dried. Alternatively, a resist agent may be selectively printed on the transparent film 6 and a metal such as aluminum is deposited, and then the resist layer may be washed and formed. Alternatively, a metal such as aluminum is pasted on the transparent film 6. It may be formed by chemical etching after being attached.

  In either case, since the line width of the mesh auxiliary electrode 83 can be formed small, a large opening can be taken, and good visibility can be maintained without impairing transparency. The mesh electrode 83 of the present embodiment can also be applied to embodiments (third, fourth, fifth, and seventh embodiments) other than the first, second, and sixth embodiments described above. Further, it is needless to say that the same effect can be obtained even if the opening of the mesh auxiliary electrode 83 has any shape such as hexagon, quadrangle, triangle, circle, or stripe.

  Next, an electroluminescent lamp according to a ninth embodiment of the present invention will be described with reference to the drawings. FIGS. 9A and 9B are cross-sectional views of main parts of the electroluminescent lamps 91a and 91b of the ninth embodiment. A feature of the electroluminescent lamps 91a and 91b of the present embodiment is that a water- and oil-repellent layer is provided on the surface side facing the light-emitting layer of the spacer of the electroluminescent lamp described in the eighth embodiment. Other configurations are the same as those of the eighth embodiment, and thus the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 9 (a), the electroluminescent lamp 91a of this embodiment has, for example, a fluorine-based resin, a silicon-based resin, and an epoxy on the surface side of the spacer 82 made of mesh-like polyester fiber facing the light-emitting layer 5. A water / oil repellent layer 92 made of a material containing at least one type of resin is provided.

  The light emission method of the electroluminescent lamp 91a of the present embodiment is performed by applying a predetermined alternating voltage to the transparent electrode adhesive layer 7 and the back electrode 3, and then pressing from the transparent film 6 with a pressing jig. At this time, the transparent electrode adhesive layer 7 is extruded so as to wrap all the fibers of the spacer 82. At the time of peeling, the extruded transparent electrode adhesive layer 7 returns to the opening of the spacer 82, but when the adhesion and peeling are repeated for a long period of time, the transparent electrode adhesive layer 7 remains on the portion in contact with the light emitting layer 5 on the front surface of the spacer 82. Cause unnecessary light emission.

  In the electroluminescent lamp 91a of this embodiment, since the water / oil repellent layer 92 is provided on the surface side of the spacer 82 facing the light emitting layer 5, the peelability between the transparent electrode adhesive layer 7 and the spacer 82 is greatly improved. . Thereby, even if adhesion and peeling are repeated for a long period of time, the transparent electrode adhesive layer 7 does not remain in the portion in contact with the light emitting layer 5 on the front surface of the spacer 82, and unnecessary light emission can be reliably prevented.

  Further, in this configuration in which the water / oil repellent layer 92 is provided on the spacer 82, for example, as shown in FIG. 9B, the transparent electrode adhesive layer 7 of the eighth embodiment shown in FIG. The present invention can also be applied to the electroluminescent lamp 91b separated into two layers of the electrode 22 and the adhesive layer 23. Since the water / oil repellent layer 92 is provided on the side of the spacer 82 facing the light emitting layer 5, the peelability between the adhesive layer 23 and the spacer 82 is greatly improved. Thereby, even if adhesion and peeling are repeated for a long period of time, the adhesive layer 23 does not remain in the portion in contact with the light emitting layer 5 on the front surface of the spacer 82, and unnecessary light emission can be reliably prevented.

  Usually, the water / oil repellent layer 92 is formed by a processing method such as a spray method, a dipping method, or a printing method with a low concentration coating agent after the mesh auxiliary electrode 83 is formed on the spacer 82. A water / oil repellent resin may be kneaded in the electrode material when the auxiliary electrode 83 is formed, and the mesh auxiliary electrode 83 and the water / oil repellent layer 92 may be printed simultaneously. Thereby, printing and a drying process can be reduced and productivity can be improved. The water / oil repellent layer 92 may be formed by modifying the surface of the spacer 82 by plasma treatment or coupling treatment.

  Next, an electroluminescent lamp according to a tenth embodiment of the present invention will be described with reference to the drawings. FIGS. 10A to 10C are cross-sectional views of main parts of the electroluminescent lamps 101a to 101c of the tenth embodiment. The feature of the electroluminescent lamps 101a to 101c of the present embodiment is that an adhesion adjusting layer is formed on the light emitting layer of the electroluminescent lamp described in the first embodiment. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 10A, in the electroluminescent lamp 101 a of this example, an adhesion adjusting layer 102 is provided on the light emitting layer 5. The adhesion adjusting layer 102 is formed of a protective film such as PVDF (polyvinylidene fluoride) having a thickness of 1 μm to 20 μm, for example, and is printed and dried using PVDF ink obtained by dissolving PVDF resin in an organic solvent on the light emitting layer 5. Form.

  The light emission and quenching method of the electroluminescent lamp 101a of the present embodiment is such that after applying a predetermined alternating voltage to the transparent electrode adhesive layer 7 and the back electrode 3, the spacer is pressed from above the transparent film 6 with a pressing jig. The transparent electrode pressure-sensitive adhesive layer 7 having 8 openings and the pressure-sensitive adhesive adjusting layer 92 are bonded and held, and a light is applied to the light-emitting layer 5 to emit light. When quenching, the transparent electrode adhesive layer 7 and the adhesion adjusting layer 102 are mechanically peeled off and the light emitting layer 5 is insulated.

  In the configuration in which the adhesion adjusting layer 102 is not provided, if the adhesion and peeling between the transparent electrode adhesive layer 7 and the light emitting layer 5 are repeated for a long time, a part of the transparent electrode adhesive layer 7 is transferred to the light emitting layer 5 side, and unnecessary light emission occurs. Cause. This is because the surface of the light emitting layer 5 has minute irregularities due to the particle size of the phosphor. When the transparent electrode adhesive layer 7 enters the gap, a part of the transparent electrode adhesive layer 7 remains and is easily transferred. Since the adhesive adjustment layer 102 of the electroluminescent lamp 101a of this embodiment has a smooth surface and low surface energy, it exhibits an excellent peeling effect even when adhesion and peeling are repeated for a long period of time. As a result, transfer of the transparent electrode adhesive layer 7 and unnecessary light emission can be reliably prevented, and the reliability of the electroluminescent lamp 101a can be greatly improved. Furthermore, since the PVDF film constituting the adhesion adjusting layer 102 has a high relative dielectric constant of 10 to 12 and a thickness of 1 μm to 20 μm, the electric field strength applied to the light emitting layer 5 is increased and the luminance of the electroluminescent lamp 101a is improved. be able to.

  The above-described adhesion adjusting layer 102 is formed by printing and drying PVDF ink on the light emitting layer 5, but a PDVF film can be bonded to the light emitting layer 5 by thermocompression bonding. Further, after PVDF ink is printed on a separate insulating film and dried to form the adhesion adjusting layer 102, the light emitting layer 8 is formed thereon. After the light emitting layer 8 is bonded to the reflective insulating layer 4 formed on the back electrode 3 by thermocompression bonding, the insulating film may be peeled off from the adhesion adjusting layer 102. In this way, the surface of the adhesion adjusting layer 102 becomes smoother than the printing and drying of the PVDF ink directly on the light emitting layer 8, and the peelability of the transparent electrode adhesive layer 7 is further improved.

  Further, in this configuration in which the adhesion adjusting layer 102 is provided, the back electrode adhesion layer 33 and the reflective insulating layer 34 of the third embodiment shown in FIG. 3 described above are bonded together like the electroluminescent lamp 101b shown in FIG. It can also be applied to a structure in which light is emitted and extinguished by peeling. As shown in the figure, since the adhesion adjusting layer 102 is provided on the reflective insulating layer 34 side, transfer of the back electrode adhesive layer 33 to the reflective insulating layer 34 can be effectively prevented.

  In addition to the PVDF film, the PDC film (polyvinylidene chloride, relative dielectric constant 6 to 7) or the like can be used as the adhesion adjusting layer 102 from the viewpoint of high transparency, easy thinning, and excellent antifouling properties. A PET film (polyethylene terephthalate, relative permittivity of 2 to 3) can be used. If the thickness is appropriately adjusted depending on the relative dielectric constant of the material (for example, PVDC film 1 μm to 15 μm, PET film 1 μm to 11 μm), the transfer of the transparent electrode adhesive layer 7 and the electric field applied to the light emitting layer 5 are reduced. Unnecessary light emission can be prevented.

  In addition, as shown in FIG. 10C, a granular resin bead made of crosslinked polymethyl methacrylate may be used as the adhesion adjusting layer 103. Since the particle-shaped resin beads also have a smooth surface and low surface energy, they exhibit an excellent peeling effect and can prevent the transparent electrode adhesive layer 7 from being transferred and unnecessary light emission. Furthermore, the peelability of the transparent electrode adhesive layer 7 from the light emitting layer 5 can be arbitrarily adjusted by appropriately changing the size and number of the granular resin beads provided on the light emitting layer 5. In addition, the adhesion adjustment layers 102 and 103 of the present embodiment can be applied to any of the first to eighth embodiments described above.

  As described above, in each of the embodiments described above, resin beads having a particle shape made of crosslinked polymethyl methacrylate are used as the spacers 8, 38, 68. However, even if pressed from above, each layer of the electroluminescent lamp is not deformed or damaged. For example, resin beads made of acrylic resin, styrene resin, polyester resin, polycarbonate resin, or the like can be used. In addition to the resin beads, as shown in FIG. 11 (a), an insulating paste 112 made of, for example, polyester, acrylic, urethane, phenol, melamine, or epoxy resin is provided on the adhesive layer 111. Further, they may be formed at a predetermined size and interval by screen printing, or may be formed by attaching mesh-like polyester fibers 113 on the adhesive layer 111 as shown in FIG. As a result, a spacer with high dimensional accuracy can be formed, so that the adhesive area between the transparent electrode adhesive layer and the light emitting layer or the back electrode adhesive layer and the reflective insulating layer can be easily controlled, and stable light emission and quenching are possible. In addition, the display area can be improved by finely dividing the light emitting area. As the material of the adhesive layer, in addition to the acrylic adhesive, urethane, rubber, silicon, and epoxy adhesives can be used.

  An adhesive layer and a spacer are provided between the transparent electrode and the light emitting layer, and the user presses and draws an arbitrary character or figure using a pressing jig, so that the transparent electrode and the light emitting layer are partially bonded. Only the part drawn can be made to emit light. Further, the transparent electrode can be easily extinguished by mechanically peeling it off the light emitting layer. Thereby, when the user emits or extinguishes an arbitrary character or figure, it is not necessary to use conductive paste or conductive ink, and it is not necessary to wipe off with water or a solvent. As a result, drying equipment used for film-forming drying of the conductive paste is not necessary, and the burden on the user for drawing out the conductive ink can be reduced. Furthermore, problems such as insulation degradation and corrosion of the back electrode caused by the conductive ink can be solved.

1 is a cross-sectional view of an essential part for explaining an electroluminescent lamp according to a first embodiment of the present invention and a method for emitting and quenching the same. Sectional drawing of the principal part of the electroluminescent lamp of 2nd Example of this invention. Sectional drawing of the principal part of the electroluminescent lamp of 3rd Example of this invention. Sectional view of an essential part for explaining the electroluminescent lamp of the fourth embodiment of the present invention and its effect Sectional drawing of the principal part of the electroluminescent lamp of 5th Example of this invention. Sectional drawing of the principal part of the electroluminescent lamp of the sixth embodiment of the present invention Sectional view and plan view of main part of electroluminescent lamp of seventh embodiment of the present invention Sectional view and perspective view of main part of electroluminescent lamp of eighth embodiment of the present invention. Sectional drawing of the principal part of the electroluminescent lamp of the ninth embodiment of the present invention Sectional drawing of the principal part of the electroluminescent lamp of the tenth embodiment of the present invention. The top view which shows arrangement | positioning of the spacer used for the electroluminescent lamp of this invention Cross-sectional view of the main parts of a conventional electroluminescent lamp

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electroluminescent lamp of 1st Example of this invention 2 Base film 3 Back electrode 4 Reflective insulating layer 5 Light emitting layer 6 Transparent film 7 Transparent electrode adhesion layer 8 Spacer 9 Pressing jig 21a, 21b 2nd Example of this invention Electroluminescent lamp 22 Transparent electrode 23 Adhesive layer 31a-31d Electroluminescent lamp of the third embodiment of the present invention 32 Base film 33 Back electrode adhesive layer 34 Reflective insulating layer 35 Light emitting layer 36 Transparent film 37 Transparent electrode 38 Spacer 39 Back surface Electrode 40 Adhesive layer 41 Electroluminescent lamp of the fourth embodiment of the present invention 42 Transparent auxiliary electrodes 51a to 51d Electroluminescent lamp of the fifth embodiment of the present invention 52 Back surface auxiliary electrodes 61a to 61c Electric field of the sixth embodiment of the present invention Luminescent lamp 62 Base film 63a, 63b Back electrode 64 Reflective insulating layer 65 Light emitting layer 66 Transparent film 67 Transparent electrode adhesive layer 68 Spacer 6 Transparent electrode 70 Adhesive layer 71a-71c Electroluminescent lamp of seventh embodiment of the present invention 72 Reflective insulating layer 73 Light emitting layer 74 Binder layer 81a, 81b Electroluminescent lamp of the eighth embodiment of the present invention 82 Spacer 83 Mesh auxiliary electrode 91a 91b Electroluminescent lamp of the ninth embodiment of the present invention 92 Water- and oil-repellent layers 101a to 101c Electroluminescent lamp of the tenth embodiment of the present invention 102, 103 Adhesion adjusting layer 111 Adhesive layer 112 Insulating paste 113 Mesh-like polyester fiber 121 Conventional Electroluminescent Lamp 122 Insulating Base Film 123a, 123b Back Electrode 124 Reflective Insulating Layer 125 Light Emitting Layer 126 Transparent Electrode

Claims (23)

  A surface of the transparent electrode that faces the light emitting layer in an electroluminescent lamp that is driven by applying an AC voltage to the transparent electrode and the back electrode by forming a light emitting layer and a reflective insulating layer between the transparent electrode and the back electrode. An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the side, and light emission and extinction are performed by partially adhering and peeling the transparent electrode to the light emitting layer.   In the electroluminescent lamp which forms a light emitting layer and a reflective insulating layer between a transparent electrode and a back electrode, and is driven by applying an AC voltage to the transparent electrode and the back electrode, the surface of the light emitting layer facing the transparent electrode An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the side, and light emission and extinction are performed by partially adhering and peeling the transparent electrode to the light emitting layer.   A light emitting layer and a reflective insulating layer are formed between a transparent electrode and a back electrode, and an electroluminescent lamp driven by applying an AC voltage to the transparent electrode and the back electrode is opposed to the reflective insulating layer of the back electrode An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the surface side, and light emission and quenching are performed by partially bonding and peeling the back electrode to the reflective insulating layer.   A light emitting layer and a reflective insulating layer are formed between a transparent electrode and a back electrode, and an electroluminescent lamp driven by applying an AC voltage to the transparent electrode and the back electrode is opposed to the back electrode of the reflective insulating layer An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the surface side, and light emission and quenching are performed by partially bonding and peeling the back electrode to the reflective insulating layer.   A light emitting layer and a reflective insulating layer are formed between a transparent electrode and a back electrode divided into at least two or more, and the light emission of the transparent electrode is performed in an electroluminescent lamp driven by applying an AC voltage to the back electrode. An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the side facing the layer, and light emission and quenching are performed by partially bonding and peeling the transparent electrode to the light emitting layer.   In an electroluminescent lamp that is driven by applying an alternating voltage to the back electrode, a light emitting layer and a reflective insulating layer are formed between the transparent electrode and the back electrode divided into at least two or more. An electroluminescent lamp characterized in that an adhesive layer and a spacer are provided on the surface facing the electrode, and light emission and quenching are performed by partially bonding and peeling the transparent electrode to the light emitting layer.   The electroluminescent lamp according to claim 1, wherein a transparent auxiliary electrode is provided on the light emitting layer, and the transparent auxiliary electrode is disposed between the spacers.   The electroluminescent lamp according to claim 3 or 4, wherein a back auxiliary electrode is provided below the reflective insulating layer, and the back auxiliary electrode is disposed between the spacers.   The electroluminescent lamp according to any one of claims 1 to 8, wherein the light emitting layer and the reflective insulating layer are separately formed, and the light emitting layer and the reflective insulating layer are disposed between the spacers.   The electroluminescent lamp according to claim 1, wherein a mesh auxiliary electrode is disposed so as to be in contact with the transparent electrode.   The electroluminescent lamp according to claim 10, wherein the mesh auxiliary electrode is disposed on a spacer.   12. The electroluminescent lamp according to claim 11, wherein a water / oil repellent layer is disposed on a surface of the spacer facing the light emitting layer.   13. The electroluminescent lamp according to claim 12, wherein the water / oil repellent layer is made of a material containing at least one of fluorine resin, silicon resin, and epoxy resin.   The electroluminescent lamp according to any one of claims 1 to 13, wherein an adhesive adjusting layer is disposed on the opposing surface side of the adhesive layer.   The electroluminescent lamp according to claim 14, wherein the adhesion adjusting layer is made of a protective film or granular resin beads.   The electroluminescent lamp according to claim 15, wherein the protective film includes at least one of PVDF (polyvinylidene fluoride), PVDC (polyvinylidene chloride), and PET (polyethylene terephthalate).   The transparent electrode is made of a transparent conductive material containing at least one kind of ion conductive polymer gel, indium oxide, tin oxide, antimony oxide, zinc oxide, and a conductive polymer. The electroluminescent lamp according to any one of 2, 5, 6, and 10.   The back electrode is a conductive material containing at least one of ion conductive polymer gel, indium oxide, tin oxide, antimony oxide, zinc oxide, carbon, aluminum, nickel, copper, silver, platinum, gold, and a conductive polymer. The electroluminescent lamp according to claim 3 or 4, wherein the electroluminescent lamp is made of a conductive material.   The electroluminescent lamp according to claim 7, wherein the transparent auxiliary electrode is made of a transparent conductive material containing at least one of indium oxide, tin oxide, antimony oxide, zinc oxide, and a conductive polymer.   The back auxiliary electrode is made of a conductive material containing at least one of indium oxide, tin oxide, antimony oxide, zinc oxide, carbon, aluminum, nickel, copper, silver, platinum, gold, and a conductive polymer. The electroluminescent lamp according to claim 8, characterized in that:   The electroluminescent lamp according to any one of claims 1 to 11, wherein the spacer is made of granular resin beads, mesh-like polyester fibers, or screen-printed insulating paste.   The particle-shaped resin beads are made of a material containing at least one kind of cross-linked polymethyl methacrylate, acrylic resin, styrene resin, polyester resin, and polycarbonate resin. Electroluminescent lamp.   The electric field according to claim 21, wherein the insulating paste is made of a material containing at least one of a polyester resin, an acrylic resin, a urethane resin, a phenol resin, a melamine resin, and an epoxy resin. Luminescent lamp.

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