light source

Abstract

Moisture penetrates through the electroluminescent layer via pinholes in the electrodes. This prevents the entire electroluminescent layer from degrading. [Solution] The structure has multiple island-like electroluminescent layers. The lorluminescence layer is divided into multiple segments. Then, multiple island-like electroluminescence layers are formed. By sandwiching it between a common pair of electrodes, moisture is introduced into one island-shaped electroluminescent layer. Even if water penetrates, it will not penetrate other island-like electroluminescent layers.

Description

Technical Field

[0001] The technical field relates to a light source (lighting device), a device provided with the light source, etc.

Background Art

[0002] For example, Patent Document 1 discloses a light source (lighting device) provided with an electroluminescence element. It is known.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] FIG. 33 shows a conceptual diagram of a conventional light source (lighting device).

[0005] In FIG. 33, a first electrode 20, an electroluminescence layer 30, and a second electrode 40 are sequentially laminated on a substrate 10. ]>

[0006] And when a pinhole 80 occurs in the second electrode 40, moisture 91 and moisture 92 penetrate through the pinhole 80, causing deterioration of the electroluminescence layer 30. This will happen.

[0007] Here, the electroluminescence layer 30 has a property of being easily penetrated by moisture.

[0008] Therefore, if even one pinhole occurs in the second electrode 40, moisture will penetrate through the electroluminescence layer 30, so the entire electroluminescence layer 30 will be affected. It will deteriorate.

[0009] Furthermore, if the entire electroluminescent layer 30 deteriorates, the light source itself becomes unusable. It ends up being that way.

[0010] Therefore, a configuration that solves the above problem is disclosed below. [Means for solving the problem]

[0011] The configuration will have multiple island-like electroluminescent layers.

[0012] In other words, the electroluminescent layer is divided into multiple parts.

[0013] Furthermore, by sandwiching multiple island-shaped electroluminescent layers between a common pair of electrodes... Even if moisture penetrates one island-shaped electroluminescent layer, other island-shaped electroluminescent layers... Moisture will no longer penetrate the essence layer.

[0014] Therefore, even if a pinhole occurs at one point on the electrode, the part where the pinhole occurred and This allows only the overlapping island-like electroluminescent layers to degrade.

[0015] Therefore, unlike in the past, the light source itself becomes unusable if a pinhole occurs in just one place on the electrode. This can prevent situations that would result from occurring.

[0016] However, when multiple island-shaped electroluminescent layers are sandwiched between a common pair of electrodes, the island-shaped In areas where an electroluminescent layer is not provided, the pair of electrodes come into contact with each other. It will be a shortcut.

[0017] Therefore, in areas where island-shaped electroluminescent layers are not provided, a non-conductive layer is provided. It is preferable to provide an insulating layer or a semiconductor layer). Note that if a non-conductive layer is interposed between a pair of electrodes in a region where a plurality of island-shaped electroluminescence layers are not provided, any configuration may be used.

[0018] Also, the end portions (edge portions) of the island-shaped electroluminescence layers are likely to cause deterioration because an electric field tends to concentrate.

[0019] Therefore, by providing the end portions (edge portions) of the island-shaped electroluminescence layers at positions overlapping with the non-conductive layer, it is possible to prevent the electric field from concentrating on the portions contributing to light emission.

[0020] That is, in the case where the island-shaped electroluminescence layer is provided in a layer above the non-conductive layer, by providing the end portions (edge portions) at positions overlapping with the non-conductive layer, the end portions (edge portions) become sacrificial regions that do not contribute to light emission.

[0021] On the other hand, in the case where the island-shaped electroluminescence layer is provided in a layer below the non-conductive layer, by providing the end portions (edge portions) at positions overlapping with the non-conductive layer, the non-conductive layer becomes an electric field relaxation layer against the electric field from the second electrode.

[0022] That is, it is possible to provide a light source having a first electrode, a non-conductive layer having a plurality of openings formed on the first electrode, a plurality of island-shaped electro- luminescence layers formed on the first electrode exposed in the plurality of openings, a second electrode formed to cover the plurality of island-shaped electroluminescence layers, and the end portions of the plurality of island-shaped electroluminescence layers being formed on the non-conductive layer.

[0023] Furthermore, a first electrode and a non-conductive material having multiple openings that insulates the surface of the first electrode. A layer and a plurality of island-shaped elements formed on the first electrode exposed at the plurality of openings. A cycloluminescent layer and the plurality of island-shaped electroluminescent layers are formed covering each other. It has a second electrode, and the ends of the plurality of island-shaped electroluminescent layers are A light source characterized by being formed on a non-conductive layer can be provided.

[0024] Furthermore, the first electrode and a plurality of island-shaped electroluminescent elements formed on the first electrode A nonconductive layer having a plurality of openings formed on the first electrode, and the nonconductive layer Multiple island-shaped electroluminescent layers exposed on the electroluminescent layer and at the multiple openings. A second electrode formed on top, and the non-conductive layer comprises the plurality of island-shaped electrodes It is possible to provide a light source characterized by being formed to cover the edges of the mineralization layer. Cut.

[0025] Furthermore, the first electrode and a plurality of island-shaped electroluminescent elements formed on the first electrode A luminescence layer and a plurality of island-shaped electrodes formed on the plurality of island-shaped electroluminescence layers , a plurality of components consisting of the plurality of island-shaped electroluminescent layers and the plurality of island electrodes A nonconductive layer embedded between the layer structure, and on the plurality of island-shaped electrodes and on the nonconductive layer A light source can be provided that has a second electrode formed thereon.

[0026] Furthermore, it is preferable that the side walls of the multiple openings have a tapered shape.

[0027] Furthermore, cuts are made at positions that overlap with the multiple island-like electroluminescent layers. It is preferable that linear holes are provided.

[0028] Furthermore, multiple island-shaped electroluminescent layers are sandwiched between a pair of electrodes, providing light The present invention provides a device having a light source and a light guide plate provided opposite the light source. This is possible. Furthermore, it is preferable that the light source be a double-sided emission type light source.

[0029] A light source having multiple island-shaped electroluminescent layers sandwiched between a pair of electrodes, It comprises a display panel and a light guide plate sandwiched between the light source and the display panel. An apparatus characterized by the above can be provided. Note that the light source is a double-sided emission light source. It would be preferable if that were the case. [Effects of the Invention]

[0030] By sandwiching multiple island-shaped electroluminescent layers between a common pair of electrodes, a light source is created. This prevents deterioration.

[0031] A non-conductive layer (insulating layer or semiconductor layer) is placed in areas where an electroluminescent layer is not provided. By providing a layer, it is possible to prevent short circuits between a pair of electrodes.

[0032] The edges of the island-shaped electroluminescent layer are positioned to overlap with the non-conductive layer. This causes the regions contributing to light emission within the island-like electroluminescent layer to deteriorate. This can prevent [the following]. [Brief explanation of the drawing]

[0033] [Figure 1] An example of a method for creating a light source [Figure 2] An example of a method for creating a light source [Figure 3] An example of a method for creating a light source [Figure 4] An example of a method for creating a light source [Figure 5] An example of a method for creating a light source [Figure 6] An example of a method for creating a light source [Figure 7] An example of a method for creating a light source [Figure 8] An example of a method for creating a light source [Figure 9] An example of a method for creating a light source [Figure 10] An example of a method for creating a light source [Figure 11] An example of a method for creating a light source [Figure 12] An example of a method for creating a light source [Figure 13] An example of a method for creating a light source [Figure 14] An example of a method for creating a light source [Figure 15] An example of a method for creating a light source [Figure 16] Example of a light source [Figure 17] Example of a light source [Figure 18] Example of a light source [Figure 19] Example of a light source [Figure 20] Example of a light source [Figure 21] Example of a light source [Figure 22] Example of a light source [Figure 23] Example of a light source [Figure 24] Example of a light source [Figure 25] Example of a light source [Figure 26] Example of a light source [Figure 27] Example of a light source [Figure 28] Example of a light source [Figure 29] Example of a light source [Figure 30] An example of a display device equipped with a light source [Figure 31]Comparison of tapered and reverse tapered shapes [Figure 32] Regarding the disconnection of the light source [Figure 33] Examples of conventional technologies [Modes for carrying out the invention]

[0034] The embodiments will be described in detail with reference to the drawings.

[0035] However, the form and details may be modified in various ways without departing from the spirit of the invention. This will be easily understood by those skilled in the art.

[0036] Therefore, the scope of the invention is not to be interpreted as being limited to the contents of the embodiments described below. do not have.

[0037] In the configuration described below, the same part or parts having similar functions are the same The same symbols are used across different drawings, and explanations of their repetition are omitted.

[0038] Furthermore, several of the following embodiments can be implemented by combining them as appropriate.

[0039] Furthermore, the number of multiple openings, the number of multiple electroluminescent layers, the number of connection points, etc. The number is not limited to those described in the embodiments and figures.

[0040] (Embodiment 1) An example of a method for creating a light source will be explained using Figures 1 to 3.

[0041] Note that the dashed line AB in the cross-sectional view corresponds to the dashed line AB in the perspective view.

[0042] A first electrode 200 is formed on the first substrate 100, and a plurality of openings are formed on the first electrode 200. A non-conductive layer 300 having a portion is formed. (Figure 1(A), Figure 1(B))

[0043] A non-conductive layer is either an insulating layer or a semiconductor layer.

[0044] Furthermore, an insulating film, a circuit, etc., is formed between the first substrate 100 and the first electrode 200. You can.

[0045] Next, island-shaped electroluminescent elements are placed on the first electrode 200 exposed at multiple openings. A light-emitting layer 401 to an island-like electroluminescent layer 409 is formed. (Figure 2(A), Figure 2(A)) 2(B))

[0046] Multiple island-like electroluminescent layers are provided at positions corresponding to multiple openings. It is possible.

[0047] Next, island-like electroluminescent layer 401 to island-like electroluminescent layer 4 The second electrode 500 is formed by covering 09. (Figure 3(A), Figure 3(B))

[0048] Next, the second substrate is placed facing the second electrode 500 side and sealed using a sealing material.

[0049] Furthermore, it is preferable to provide a protective film covering the second electrode 500 before sealing. The sealing may be performed with a protective film alone, or with a protective film and the protective film provided on the protective film A protective film to protect it from friction may also be used. In this way, without using a second substrate A sealing method that involves sealing with a protective film is called film sealing. Film sealing is performed and the first substrate is made flexible. By using a plate, the light source can be made thinner and lighter.

[0050] As described above, multiple island-like electroluminescent layers are connected to a common first electrode and a common By placing it between the second electrode and the light source, degradation of the light source can be prevented.

[0051] Furthermore, a non-conductive layer having multiple openings is provided, and the position corresponding to each of the multiple openings By arranging multiple island-shaped electroluminescent layers, the first electrode and the second This prevents short circuits with the electrodes.

[0052] Furthermore, the edges of the island-shaped electroluminescent layer are covered by the second electrode. Therefore, voltage will be applied to the edges from the top and sides, so the edges The electric field tends to concentrate in that area, making it prone to degradation.

[0053] Therefore, by positioning the end (edge ​​portion) in a location that overlaps with the insulating layer, the end (edge ​​portion) Since this part does not contribute to light emission, it prevents the electric field from concentrating in the part that does contribute to light emission. It can be stopped.

[0054] In other words, by positioning the end (edge) in a location that overlaps with the insulating layer, the end (edge) The (part) becomes the sacrificial area.

[0055] In other words, the edges of the electroluminescent layer are considered sacrificial regions that do not contribute to light emission. By doing so, it is possible to prevent the electric field from concentrating in the part that contributes to light emission. Therefore, it is possible to prevent deterioration of the parts that contribute to light emission.

[0056] Therefore, as shown in Figures 2 and 3, the peripheral edges (all edges) of the island-like electroluminescent layer It is preferable to provide the part in a position that overlaps with the non-conductive layer.

[0057] In other words, the area of ​​the island-like electroluminescent layer is larger than the area of ​​the openings in the non-conductive layer. It is preferable that the island-like electroluminescent layer is slightly larger than the opening. stomach.

[0058] Furthermore, because the area of ​​the island-like electroluminescent layer is larger than the area of ​​the opening, Even if the position where the island-like electroluminescence layer is formed is slightly off, the first electrode This also has the effect of preventing exposure.

[0059] Therefore, the area of ​​the island-like electroluminescent layer is larger than the area of ​​the openings in the non-conductive layer. Larger is preferable.

[0060] Furthermore, by making the side walls of the openings provided in the non-conductive layer 300 tapered, This is preferable because it can prevent the discontinuation of multiple island-like electroluminescent layers. .

[0061] This embodiment can be implemented in combination with all other embodiments.

[0062] (Embodiment 2) This embodiment will describe the materials and manufacturing method.

[0063] The first and second substrates may be translucent substrates, light-shielding substrates, etc. It is possible.

[0064] Translucent substrates include glass substrates, quartz substrates, and translucent plastic substrates. be.

[0065] Light-shielding substrates include light-shielding plastic substrates and metal substrates (stainless steel, etc.). Examples include luminium, semiconductor substrates (silicon wafers, etc.), and paper substrates.

[0066] Furthermore, since the light source needs to extract light, it must be at least one of the first or second substrates. The material is translucent.

[0067] Of course, both the first substrate and the second substrate may be translucent.

[0068] Furthermore, plastic substrates, metal substrates, paper substrates, etc., can be made more flexible by reducing their thickness. It is easy to give to someone.

[0069] Furthermore, by making both the first substrate and the second substrate flexible substrates, A flexible light source can be provided.

[0070] A flexible light source is preferable because it is less likely to break due to its flexibility.

[0071] Furthermore, by using a flexible substrate, it can be easily cut with scissors, cutters, etc. Therefore, it is also possible to provide a light source that can be molded into a desired shape.

[0072] The first and second electrodes can be made of metals, oxide conductors, etc. Not limited.

[0073] For example, the first and second electrodes may be metal nitrides, metal oxides, or metal alloys. Furthermore, conductive materials may be used.

[0074] The first electrode and the second electrode may have a single-layer structure or a multi-layer structure.

[0075] Metals include tungsten, titanium, aluminum, molybdenum, gold, silver, copper, and platinum. These include palladium, iridium, alkali metals, alkaline earth metals, etc., but are not limited to these. I can't.

[0076] Oxide conductors include indium tin oxide, zinc oxide, and zinc oxide containing indium. Examples include, but are not limited to, zinc oxide containing indium and gallium.

[0077] Furthermore, those with low work functions (alkali metals, alkaline earth metals, magnesium-silver alloys, It is preferable to use aluminum-lithium alloy, magnesium-lithium alloy, etc., as the cathode.

[0078] Furthermore, it is preferable to use a material with a high work function (such as an oxide conductor) as the anode.

[0079] Furthermore, since the light source needs to extract light, it must have at least one of the first or second electrodes. The material is translucent.

[0080] Furthermore, both the first electrode and the second electrode are translucent, and the first substrate and If both the first and second substrates are translucent, a light source (double-sided emission type) can be created that can extract light from both sides. It can be used as a light source.

[0081] Furthermore, oxide conductors are translucent.

[0082] Furthermore, even with metals, metal nitrides, metal oxides, and metal alloys, if the film thickness is thin, the light transmission and This is possible. (A film thickness of 50 nm or less is preferred.)

[0083] When the film thickness is reduced to make metals, metal nitrides, metal oxides, metal alloys, etc. transparent, The resistance of the electrodes will increase.

[0084] Therefore, the surface in contact with the electroluminescent layer is made of metal, metal nitride, metal oxide, gold By treating it as a group alloy, etc., the surface that does not come into contact with the electroluminescent layer is made an oxide conductor. This allows us to lower the resistance of the electrodes.

[0085] In particular, when using a material with a low work function on the surface in contact with the electroluminescent layer This is preferable because it allows both the work function and the resistance value to be optimized.

[0086] The non-conductive layer is either an insulating layer or a semiconductor layer.

[0087] As the insulating layer, an organic insulating layer or an inorganic insulating layer can be used.

[0088] As the organic insulating layer, resists, acrylics, polyimides, etc. can be used. These are not the only options.

[0089] Examples of inorganic insulating layers include diamond-like carbon, silicon nitride, silicon oxide nitride, and nitride Silicon oxide, silicon oxide, aluminum nitride, aluminum oxide nitride, aluminum oxide nitride While these may be used, they are not limited to these.

[0090] Examples of semiconductor layers include silicon, silicon-germanium, germanium, oxide semiconductors, etc. These may be used, but are not limited to them.

[0091] Examples of oxide semiconductors include In-Ga-Zn-O oxides (indium and gallium and In-Sn-Zn-O oxides (mainly composed of zinc and oxygen), In-Sn-Zn-O oxides (indium, tin, and zinc) In-Al-Zn-O oxides (mainly composed of indium and aluminum) (Mainly composed of zinc and oxygen), Sn-Ga-Zn-O oxide (tin, gallium and zinc) Al-Ga-Zn-O oxides (mainly composed of aluminum and oxygen) (aluminum and gallium and Sn-Al-Zn-O oxides (mainly composed of zinc and oxygen) (tin, aluminum and ammonium) Lead and oxygen are the main components), In-Zn-O oxides (mainly indium, zinc, and oxygen) (as a component), Sn-Zn-O oxide (mainly composed of tin, zinc, and oxygen), Al-Z nO-based oxides (mainly composed of aluminum, zinc, and oxygen), In-O-based oxides ( Indium oxide, Sn-O oxide, Zn -O-based oxides (zinc oxide (zinc oxide)) and other oxide semiconductors can be used, but It is not limited to them.

[0092] Oxide semiconductors include organic insulating layers, inorganic insulating layers, silicon, silicon germanium, and gels. It has higher light transmittance than manium, etc. Therefore, an oxide semiconductor is used as the non-conductive layer. By doing so, the efficiency of light extraction can be improved.

[0093] Furthermore, if an oxide semiconductor contains a large amount of carriers (such as hydrogen or oxygen vacancies), it becomes conductive. Since this may be the case, it is preferable to lower the carrier density.

[0094] The carrier density is 1 × 10⁻⁶ 19 cm -3 (more preferably 1 × 10) 16 cm -3 below More preferably 1 × 10 14 cm -3 More preferably 1 × 10 12 cm -3 below ) is preferable.

[0095] Since a high resistance is preferable for the non-conductive layer, an amorphous semiconductor layer is preferred, but it is not limited to this. I can't.

[0096] Since a high resistance is preferable for the non-conductive layer, impurities that impart conductivity are intentionally added. A form that does not exist is preferable, but is not limited to this.

[0097] Furthermore, the non-conductive layer can be a single layer or a multilayer layer.

[0098] In particular, it is preferable to have a laminated structure in which the non-conductive layer is sandwiched between a pair of insulating layers.

[0099] Metals have good thermal conductivity, so they act as heat dissipation materials.

[0100] Since the electroluminescent layer is sensitive to heat, by providing a heat dissipation material, This can prevent the deterioration of the lorluminescence layer.

[0101] By creating a laminated structure in which a non-conductive layer is sandwiched between a pair of insulating layers, the electro Heat transferred from the luminescent layer to the electrode is then transferred to the metal via the insulating layer, allowing for heat dissipation. It is Noh.

[0102] In a laminated structure in which a metal layer is sandwiched between a pair of non-conductive layers, the metal layer is floating. This condition prevents short circuits from occurring.

[0103] Therefore, by simultaneously forming openings in the pair of insulating layers and the metal layer, the metal layer side If the wall is in contact with a portion of the island-like electroluminescent layer, heat can be dissipated directly. Therefore, it is preferable.

[0104] By making the opening of the metal layer larger than the opening of the pair of insulating layers, the sidewall of the metal layer It is also possible to ensure that the island-like electroluminescent layer is not in contact with the surrounding material.

[0105] Furthermore, a pair of non-conductive layers are made of silicon nitride, known as a heat-dissipating insulating layer, and diamond-like material. By using materials such as carbon, aluminum nitride, and aluminum nitride, the heat dissipation effect can be improved. It can be raised.

[0106] Aluminum nitride oxide and aluminum nitride are particularly preferred.

[0107] Furthermore, the same effect can be obtained by using a single layer of heat-dissipating insulating layer.

[0108] However, the thermal conductivity of aluminum nitride is 170-180 W / m·K, while the thermal conductivity of silver is 42 0 W / m·K, the thermal conductivity of copper is 398 W / m·K, the thermal conductivity of gold is 320 W / m·K, A Considering that the thermal conductivity of luminium is 236 W / m·K, the metal layer is a pair of insulators. A layered structure, where the material is sandwiched between layers, is preferable.

[0109] The metal layer is made of gold, silver, copper, platinum, aluminum, molybdenum, tungsten, alloys, etc. Any genus can be used.

[0110] Gold, silver, copper, and aluminum are particularly desirable due to their high thermal conductivity.

[0111] Furthermore, since the thermal conductivity of silicon is 168 W / m·K, silicon is also a suitable heat dissipation material. It can be said that... (For reference, the thermal conductivity of insulators is generally 10 W / m·K or less.) many.)

[0112] Therefore, a structure in which a metal layer is sandwiched between a pair of silicon layers is also preferable.

[0113] Furthermore, the pair of non-conductive layers may be made of different materials.

[0114] In short, between the first nonconductive layer and the second nonconductive layer, the heat of the first nonconductive layer A layer having a thermal conductivity higher than the electrical conductivity and the thermal conductivity of the second non-conductive layer can be sandwiched between them. That's the situation.

[0115] Therefore, an insulating layer may be sandwiched between the pair of insulating layers, or a semiconductor layer may be sandwiched between the pair of insulating layers. You can put it in between.

[0116] The thermal conductivity of the diamond-like carbon film is 400-1800 W / m·K (film deposition). (This varies depending on the method.)

[0117] Furthermore, by making the first and second electrodes translucent, a double-sided emission light source can be fabricated. In this case, the background can be hidden by using a laminated structure in which a metal layer is sandwiched between a pair of non-conductive layers. It is possible.

[0118] For example, when illuminating two rooms by installing a double-sided light source on a wall, the background is visible. If you leave the background open, people in the next room can see in, so hide the background if you don't want people in the next room to see in. It is effective.

[0119] Furthermore, if the goal is simply to conceal the background, the non-conductive layer can be made of a light-shielding material such as black resin. That's fine.

[0120] Furthermore, in the case of a double-sided emission light source, since a reflective electrode is not used, it was not possible to utilize reflected light. However, by creating a laminated structure in which a metal layer is sandwiched between a pair of non-conductive layers, the metal layer becomes four It reflects a portion of the electroluminescent light emitted in all directions, so the reflected light can be used. It is possible.

[0121] Of course, even with a single-sided emission light source, a laminated structure is used in which a metal layer is sandwiched between a pair of non-conductive layers. This makes it possible to increase the reflection efficiency.

[0122] The electroluminescent layer has a light-emitting unit having a light-emitting layer. For example, there is a light-emitting layer containing an organic compound.

[0123] The light-emitting unit includes, in addition to the light-emitting layer, an electron injection layer, an electron transport layer, a hole injection layer, a hole transport layer, etc. It's okay to have it.

[0124] The light-emitting unit is not limited to those that emit light when voltage is applied.

[0125] Therefore, inorganic electroluminescent materials may be used as the light-emitting unit.

[0126] Furthermore, the device has multiple light-emitting units and a charge-generating layer that separates the multiple light-emitting units. By using a lectroluminescent layer, the brightness of the electroluminescent layer is improved. It can be raised.

[0127] The charge generation layer can be a metal, an oxide conductor, a layered structure of a metal oxide and an organic compound, or gold A mixture of a specific oxide and an organic compound can be used.

[0128] As a charge generation layer, a layered structure of metal oxide and organic compound, and When a mixture of these is used, when a voltage is applied, holes are injected in the cathode direction and electricity is injected in the anode direction. It is suitable because it allows for the injection of the child.

[0129] Suitable metal oxides for use in the charge generation layer include vanadium oxide, niobium oxide, and tantalum oxide. chromium oxide, molybdenum oxide, tungsten oxide, manganese oxide, rhenium oxide, etc. It is a transition metal oxide.

[0130] Furthermore, as organic compounds used in the charge generation layer, amine compounds (especially arylamines) Transition metal oxides can be obtained by using compounds such as carbazole derivatives, aromatic hydrocarbons, and Alq. It is preferable because it forms a charge transfer complex.

[0131] The sealing material can be a thermosetting epoxy resin, a photocuring epoxy resin, or the like. However, it is not limited to these. The sealing material may simply be an adhesive.

[0132] The protective film is made of diamond-like carbon, silicon nitride, silicon oxide nitride, silicon oxide nitride, and acid Inorganic compounds such as silicon dioxide, aluminum nitride, aluminum oxide nitride, and aluminum oxide nitride Using materials that can block moisture is preferable, but the material is not limited to these. Also, protective film A layered structure is also acceptable.

[0133] Furthermore, the insulating film, electroluminescent layer, first electrode, second electrode, etc., are formed into a desired shape. Methods for processing include photolithography and metal masks. It would be good if they were there. Also, patterns (multiple island-shaped electrons) can be directly created using inkjet methods, etc. A lorluminescence layer may be formed.

[0134] This embodiment can be implemented in combination with all other embodiments.

[0135] (Embodiment 3) The tapered shape will be explained using Figure 31.

[0136] In Figure 31, a first electrode 200 is formed on the first substrate 100, and the first electrode A non-conductive layer 300 having an opening is provided on the pole 200.

[0137] Here, making the side wall of the opening tapered means that in the cross-sectional shape, the cut inside the opening The upright portion widens downwards. (Figure 31(A))

[0138] On the other hand, making the side walls of the opening in a reverse tapered shape means that in the cross-sectional shape, the cut inside the opening The upright portion widens upwards. (Figure 31(B))

[0139] Furthermore, making the side walls of the opening non-tapered means that in terms of the cross-sectional shape, the cut inside the opening The goal is to ensure that the angle between the upright portion and the surface of the first electrode is perpendicular.

[0140] Furthermore, when comparing the reverse tapered shape and the non-tapered shape, the tapered shape has multiple It is superior in that it can prevent the island-shaped electroluminescent layer (or second electrode) from breaking off. ru.

[0141] Note that the tapered shape is not limited to straight lines; curves are also acceptable. (Figure 31(C), Figure 31( D))

[0142] This embodiment can be implemented in combination with all other embodiments.

[0143] (Embodiment 4) An example of a method for creating a light source will be explained using Figures 4 to 8.

[0144] Note that the dashed line AB in the cross-sectional view corresponds to the dashed line AB in the perspective view.

[0145] A first electrode 200 is formed on the first substrate 100. (Figures 4(A) and 4(B))

[0146] An insulating film, circuit, etc. may be formed between the first substrate 100 and the first electrode 200. stomach.

[0147] Next, masks 901 to 909 are formed on the first electrode 200. (Figure 5(A)) (Figure 5(B))

[0148] Masks can be made of organic materials, inorganic materials, etc.

[0149] Masks made of organic materials include resists, acrylics, polyimides, and organic electroluminescent materials. Materials used for the sense layer can be used.

[0150] Masks made of inorganic materials can be silicon dioxide, silicon nitride, etc.

[0151] Furthermore, the method for processing masks 901 to 909 into the desired shape is to use a metal mask The film deposition method used, photolithography using a photomask, etc., can be employed.

[0152] Next, the surface of the exposed first electrode 200 was insulated to form a non-conductive layer 300. Next, remove masks 901-909. (Figures 6(A), 6(B), 6(C))

[0153] Insulation methods include oxidation and nitriding.

[0154] The first electrode can be a single layer or a multilayer structure, as long as at least the surface is made of metal.

[0155] Oxidation can be treated with ozone surface treatment (ozone water treatment, ozone atmosphere treatment) or heating in an oxygen atmosphere. This can be done by methods such as oxygen plasma treatment, heating in a water vapor atmosphere, and water plasma treatment. can.

[0156] Nitriding can be performed by heating in a nitrogen atmosphere, nitrogen plasma treatment, etc.

[0157] Furthermore, when using a mask made of organic material, ozone surface treatment, oxygen plasma treatment, and water plasma treatment may be used. When rasma processing is performed, the edges of mask 901-909 are also removed at the same time, so the mask Values ​​901-909 become smaller. (Figure 6(B))

[0158] Therefore, the area of ​​the non-insulated region (multiple openings, multiple exposed parts) of the first electrode It also becomes smaller.

[0159] Therefore, the metal mask or photomask used to form masks 901-909 By using the same material again to form island-like electroluminescent layers, The peripheral edges (all edges) of the electroluminescent layer overlap with the insulated region. It can be installed in [location].

[0160] Thus, when a metal mask or photomask is reused in another process, the metal mask Alternatively, it is preferable because it reduces the number of photomasks, leading to cost reduction.

[0161] Of course, the metal mask or photomask used to form the mask, and the island-shaped A metal mask or photomask used to form a lectroluminescence layer, You can replace it with something else.

[0162] Next, island-shaped electroluminescent layers 401 to island-shaped electroluminescent layers are placed on the exposed first electrode. A trollluminescence layer 409 is formed. (Figure 7(A), Figure 7(B))

[0163] Multiple island-like electroluminescent layers each have multiple openings (multiple exposed areas) It will be installed in the corresponding location.

[0164] Next, island-like electroluminescent layer 401 to island-like electroluminescent layer 4 The second electrode 500 is formed by covering 09. (Figure 8(A), Figure 8(B))

[0165] Next, the second substrate is placed facing the second electrode 500 side and sealed using a sealing material.

[0166] Furthermore, it is preferable to provide a protective film to cover the second electrode 500 before sealing.

[0167] In this embodiment as well, a short circuit between the first electrode and the second electrode can be prevented.

[0168] Furthermore, the edges of the island-shaped electroluminescent layer are insulated from the first electrode. It is preferable to provide it on the surface.

[0169] Therefore, as shown in Figures 7 and 8, the peripheral edges (all edges) of the island-like electroluminescent layer It is preferable to place the part in a position that overlaps with the insulated surface.

[0170] Furthermore, in this embodiment, the second electrode surface and the insulating surface become flat, so This is preferable because it prevents the lorluminescence layer from being interrupted by steps.

[0171] This embodiment can be implemented in combination with all other embodiments.

[0172] (Embodiment 5) An example of a method for creating a light source will be explained using Figures 9 to 11.

[0173] Note that the dashed line AB in the cross-sectional view corresponds to the dashed line AB in the perspective view.

[0174] A first electrode 200 is formed on the first substrate 100, and island-shaped electrodes are placed on the first electrode 200. It forms a trollluminescence layer 401 to an island-like electroluminescence layer 409. Figures 9(A) and 9(B))

[0175] An insulating film, circuit, etc. may be formed between the first substrate 100 and the first electrode 200. stomach.

[0176] Next, island-like electroluminescent layer 401 to island-like electroluminescent layer 4 Covering 09, and island-shaped electroluminescent layer 401 to island-shaped electroluminescent A non-conductive layer 300 is formed having multiple openings at positions corresponding to each of the sense layers 409. (Figure 10(A), Figure 10(B))

[0177] Next, the non-conductive layer 300 and the island-shaped electroluminescent elements exposed at the multiple openings A second electrode 500 is formed on the luminescence layer 401 to the island-shaped electroluminescence layer 409. (Figure 11(A), Figure 11(B))

[0178] Next, the second substrate is placed facing the second electrode 500 side and sealed using a sealing material.

[0179] Furthermore, it is preferable to provide a protective film to cover the second electrode 500 before sealing.

[0180] In this embodiment as well, a short circuit between the first electrode and the second electrode can be prevented.

[0181] Furthermore, since the island-like electroluminescent layer is formed on a flat surface on the first electrode, This prevents the island-like electroluminescence layer from breaking down into steps.

[0182] Furthermore, the edges of the island-shaped electroluminescent layer are provided in the non-conductive layer. This allows the edges to be protected with a non-conductive layer.

[0183] In other words, by covering the edges with a non-conductive layer, the material applied to the edges is This can mitigate the electric field.

[0184] Therefore, as shown in Figures 10 and 11, the peripheral edges of the island-like electroluminescent layer (all It is preferable to position the end of the part (or part) in a location that overlaps with the non-conductive layer.

[0185] Furthermore, by making the side walls of the openings provided in the non-conductive layer 300 tapered, This is preferable because it prevents step breakage of the second electrode.

[0186] This embodiment can be implemented in combination with all other embodiments.

[0187] (Embodiment 6) An example of a method for creating a light source will be explained using Figures 12 to 15.

[0188] Note that the dashed line AB in the cross-sectional view corresponds to the dashed line AB in the perspective view.

[0189] A first electrode 200 is formed on the first substrate 100, and island-shaped electrodes are placed on the first electrode. A luminescence layer 401 to an island-like electroluminescence layer 409 is formed. (Figure 12) (A), Figure 12(B))

[0190] An insulating film, circuit, etc. may be formed between the first substrate 100 and the first electrode 200. stomach.

[0191] Next, island-like electroluminescent layer 401 to island-like electroluminescent layer 4 Island electrodes 511 to 519 are formed on 09. (Figures 13(A), 13(B)) )

[0192] The material of the island electrodes can be the same as that of the first electrode and the second electrode.

[0193] The plurality of island electrodes are provided at positions corresponding to the plurality of island electroluminescence layers respectively. respectively.

[0194] Note that a first method may be used in which an electroluminescence layer is formed, a plurality of island electrodes are formed on the electroluminescence layer, and the electroluminescence layer is etched using the plurality of island electrodes as a mask to form a plurality of island electroluminescence layers. formed on the electroluminescence layer, a plurality of masks (such as a plurality of resist masks) are formed on the conductive film, the conductive film is etched using the plurality of masks to form a plurality of island electrodes, and the electroluminescence layer is etched to form a plurality of electroluminescence layers. formed. A second method may also be used.

[0195] Alternatively, a second method may be used in which an electroluminescence layer is formed, a conductive film is formed on the electroluminescence layer, a plurality of masks (such as a plurality of resist masks) are formed on the conductive film, the conductive film is etched using the plurality of masks to form a plurality of island electrodes, and the electroluminescence layer is etched to form a plurality of electroluminescence layers. formed on the conductive film, and the conductive film is etched using the plurality of masks to form a plurality of island electrodes and the electroluminescence layer is etched to form a plurality of electroluminescence layers. At the same time, the above-mentioned electroluminescence layer is etched to form a plurality of electroluminescence layers. formed. A second method may also be used.

[0196] By using the first method or the second method, the formation process of the plurality of island electroluminescence layers and the plurality of island electrodes can be simplified. simplified.

[0197] Next, after forming a non-conductive film covering the plurality of island electrodes, the non-conductive film is etched back or polished (such as mechanical polishing, CMP (Chemical Mechanical Polishing), etc.) so that the plurality of island electroluminescence layers and the plurality of island electrodes are stacked. polished (such as mechanical polishing, CMP (Chemical Mechanical Polishing), etc.) g) etc.), so that the plurality of island electroluminescence layers and the plurality of island electrodes are stacked. A non-conductive layer 300 is formed embedded between the layers of the structure. (Figures 14(A), 14(B)) )

[0198] Next, the second electrode 50 is placed on the island electrodes 511 to 519 and on the non-conductive layer 300. It forms 0. (Figure 15(A), Figure 15(B))

[0199] Next, the second substrate is placed facing the second electrode 500 side and sealed using a sealing material.

[0200] Furthermore, it is preferable to provide a protective film to cover the second electrode 500 before sealing.

[0201] In this embodiment as well, a short circuit between the first electrode and the second electrode can be prevented.

[0202] Furthermore, since the island-like electroluminescent layer is formed on a flat surface on the first electrode, This prevents the island-like electroluminescence layer from breaking down into steps.

[0203] Furthermore, since a non-conductive layer 300 is embedded, it prevents step breakage of the second electrode. can.

[0204] Furthermore, when embedding the non-conductive layer, the presence of multiple island-shaped electrodes results in multiple islands The shaped electrodes act as a barrier, and the upper part of multiple island-shaped electroluminescent layers is etched. This can prevent that from happening.

[0205] Furthermore, if the resistivity of the island-shaped electrode is made lower than that of the second electrode, the island-shaped electrode can be used as an auxiliary electrode. It can function as an electrode. (Auxiliary electrode (1))

[0206] Conversely, if the resistivity of the second electrode is made lower than that of the island electrode, the second electrode can be used as an auxiliary electrode. It can function as an electrode. (Auxiliary electrode (2))

[0207] When comparing the auxiliary electrode (1) with the auxiliary electrode (2), considering the auxiliary electrode (2) rather than the auxiliary electrode (1) is preferable. This is because the area of the second electrode is larger than the sum of the areas of the plurality of island electrodes so that the resistance value of the upper electrode (the stacked body of the island electrode and the second electrode) can be reduced more effectively by the auxiliary electrode (2) than by the auxiliary electrode (1).

[0208] If the main purpose is to use the island electrode or the second electrode as the auxiliary electrode, the edge portion of the island electrode may be covered with a non-conductive layer.

[0209] This embodiment can be implemented in combination with all other embodiments.

[0210] (Embodiment 7) The shapes of the island electroluminescent layers 401 to 409 can be various shapes such as triangles, polygons, circles, ellipses, donut shapes , stars, hearts, etc., in addition to the quadrilateral shape shown in Fig. 16.

[0211] Shapes such as donut shapes, stars, and hearts make it a fashionable and attractive light source, so it is beautiful.

[0212] Also, it is not necessary for all the shapes of the plurality of island electroluminescent layers to be the same.

[0213] Even if the plurality of island electroluminescent layers include different shapes, it can be a light source that appeals to human aesthetic sense, so it is beautiful.

[0214] Also, in order to appeal to the aesthetic sense, the plurality of island electroluminescent layers may include different colors. ​It's beautiful even when done this way.

[0215] As described above, by devising the shape or color of the island-like electroluminescent layer, It can provide a light source that appeals to human aesthetic sensibilities.

[0216] This embodiment can be implemented in combination with all other embodiments.

[0217] (Embodiment 8) The power supply structure for the light source will be explained.

[0218] Figure 17 shows an example of a power supply structure.

[0219] The dashed line ABC in Figure 17(A) corresponds to the dashed line ABC in Figure 17(B).

[0220] In the light-emitting region where an island-shaped electroluminescent layer is formed, the surrounding area of ​​the light-emitting region The area surrounded by the placed second sealing material 702 and the second substrate 110 contains the first sealing material 7 It is filled with 01.

[0221] Furthermore, a protective film 600 is also provided.

[0222] On the other hand, at the connection part, an opening is provided in a part of the non-conductive layer 300, and at the opening In this configuration, the first electrode 200 is exposed.

[0223] Furthermore, a second electrode 500 is provided extending from the connection point.

[0224] In this way, by exposing the first electrode and the second electrode at the connection point, electricity This will enable the supply of resources.

[0225] This embodiment can be implemented in combination with all other embodiments. (Embodiment 9) The power supply structure for the light source will be explained.

[0226] Figures 18 and 19 show an example of a power supply structure.

[0227] The dashed line ABC in Figure 18(A) corresponds to the dashed line ABC in Figure 18(B).

[0228] The dashed line ABC in Figure 19(A) corresponds to the dashed line ABC in Figure 19(B).

[0229] In Figure 18, the connection point is positioned within the light-emitting region.

[0230] Therefore, in Figure 18, an opening is provided in the second substrate 110.

[0231] Furthermore, the connection point has a structure in which the first electrode and the second electrode are exposed.

[0232] Furthermore, in Figure 19, multiple connection points are arranged surrounded by the light-emitting region.

[0233] Therefore, in Figure 19, the second substrate 110 is provided with multiple openings.

[0234] Furthermore, in Figures 18 and 19, the luminescence formed by the island-like electroluminescence layer is shown. In the region, a second sealing material 702 and a third sealing material 70 are arranged around the light-emitting region. The area enclosed by 3 and the second substrate 110 is filled with the first sealing material 701.

[0235] Furthermore, a protective film 600 is also provided.

[0236] Because the connection portion is arranged surrounded by the light-emitting region, the area of ​​the first substrate 100 It can be made smaller.

[0237] Furthermore, by providing a connection between the island-shaped electroluminescent layers as shown in Figure 19... Therefore, the area of ​​the light-emitting region can be increased.

[0238] This embodiment can be implemented in combination with all other embodiments.

[0239] (Embodiment 10) As shown in Figures 20 to 23, the island-like electroluminescent layer is annular (circular, polygonal) It can also be made into a ring shape, etc.

[0240] Figure 20 shows the island-like electroluminescence layer 411 to the island-like electroluminescence layer This is a ring-shaped version of layer 413.

[0241] Figure 21 shows the island-like electroluminescence layer 411 to the island-like electroluminescence layer This shows the configuration of the connection point when layer 413 is made into a ring shape.

[0242] Note that the dashed line AB in Figure 21(A) corresponds to the dashed line AB in Figure 21(B).

[0243] Figure 22 shows the island-like electroluminescence layer 421 to the island-like electroluminescence layer Layer 423 is arranged in a polygonal ring shape.

[0244] Figure 23 shows the island-like electroluminescence layer 421 to the island-like electroluminescence layer This shows the configuration of the connection point when layer 423 is made into a polygonal ring.

[0245] Note that the dashed line AB in Figure 23(A) corresponds to the dashed line AB in Figure 23(B).

[0246] As described above, by placing the connection part in the center of multiple rings, the area of ​​the light-emitting region and the connection part can be increased. It's preferable because it's easy to do.

[0247] This embodiment can be implemented in combination with all other embodiments.

[0248] (Embodiment 11) By forming multiple island-like electroluminescent layers, the light source can be made into any shape. It becomes possible to mold it.

[0249] In other words, in conventional light sources, the electroluminescent layer was formed over the entire surface, Cutting it exposes the side of the electroluminescent layer.

[0250] If the sides are exposed, the entire electroluminescent layer deteriorates and it ceases to function as a light source. It was gone.

[0251] However, by forming multiple island-like electroluminescent layers, the above problem can be solved. It can be decided.

[0252] Figure 32(A) shows the light source before cutting.

[0253] Figure 32(B) shows the light source after cutting.

[0254] In Figure 32, the white island-like areas represent island-type electroluminescence where the sides are not exposed. The layers, the black island-like areas are island-shaped electroluminescent layers with exposed sides, and the dashed lines indicate the cut sections. It is a place.

[0255] As is clear from Figure 32, island-shaped electroluminescent material formed at a location overlapping with the cut section The essence layer will no longer emit light once its sides are exposed, but island-shaped electrons that do not overlap with the cut area will still emit light. Since the sides of the mineralization layer are not exposed, the luminescence is maintained.

[0256] Therefore, it is possible to provide a light source that can be molded into any shape.

[0257] Furthermore, if the first or second substrate is hard, such as a glass substrate or a quartz substrate, a laser is used. It can be cut using a cutting or dicing device, etc.

[0258] On the other hand, if the substrate itself is soft, such as in the case of a flexible light source, simple tools such as scissors or a cutter can be used. Since it can be cut with any cutting tool, anyone can easily shape it, making it fun to enjoy at home, school, etc. It is possible.

[0259] When cutting, using an inorganic insulating layer or semiconductor layer as a non-conductive layer prevents moisture penetration. From that perspective, it is preferable.

[0260] When cutting, it is preferable to cut in a way that leaves a connection point intact.

[0261] On the other hand, if the connection part is arranged surrounded by the light-emitting region as shown in Figure 18, leaving the connection part intact Since it only requires cutting, the shape after cutting is not restricted.

[0262] Furthermore, the configuration with multiple connection points as shown in Figure 19 allows for cutting without worrying about the position of the connection points. This is very desirable because it allows for this.

[0263] Furthermore, if there is only one connection point, the remaining piece without the connection point becomes waste, but if there are multiple connections... If there is a connection point, even the scraps can emit light, so they can be reused as a light source. .

[0264] Furthermore, as shown in Figures 24 to 28, dotted lines (perforations) for tearing are provided. This allows for cutting without the need for cutting tools, making it convenient for use at home, school, etc. It is possible.

[0265] It is preferable to precisely create the perforations (dotted lines) for cutting using a laser cutter or similar method. It's nice.

[0266] Furthermore, the dotted lines (perforations) for cutting are located on the first and second substrates, the sealing material, and the first and It is formed by penetrating through the second electrode, the non-conductive layer, the protective film, and so on.

[0267] In Figure 24, dashed lines 8001 to 8004 are dashed lines (perforations) for cutting. ) and are formed in positions where island-like electroluminescent layers and connecting parts are not formed. It is done by providing one connection point for each island-shaped electroluminescent layer. It is preferable.

[0268] In Figure 25, dashed lines 8011 and 8012 are dashed lines (perforations) for cutting. ) and are formed in positions where island-like electroluminescent layers and connecting parts are not formed. This is done by creating dotted lines (perforations) for cutting between the rings. This allows for subsequent adjustment to the desired size.

[0269] Figure 26 is a modified version of Figure 25, in which a notch is formed in a part of the ring and connected to the notch. Parts 8121 to connecting part 8123 are provided. With the configuration shown in Figure 26, even if it is cut All the rings can be made to emit light.

[0270] In Figure 27, dashed lines 8021 and 8022 are dashed lines (perforations) for cutting. ) and are formed in positions where island-like electroluminescent layers and connecting parts are not formed. This is done by forming dotted lines (perforations) for cutting between the rings. This allows for subsequent adjustment to the desired size.

[0271] Figure 28 is a modified version of Figure 27, in which a notch is formed in a part of the ring and connected to the notch. Parts 8121 to connecting part 8123 are provided. With the configuration shown in Figure 28, even if it is cut All the rings can be made to emit light.

[0272] Perforations (dotted lines) for cutting are formed when island-like electroluminescent layers are created. Because it is formed in a position where it is not present, the sides of the island-like electroluminescence layer are not present before cutting. Since neither the cutting nor the surrounding material is exposed, degradation of the light source can be prevented.

[0273] This embodiment can be implemented in combination with all other embodiments.

[0274] (Embodiment 12) Figure 29 shows a device in which a light guide plate 2002 is positioned opposite a double-sided light source 2001.

[0275] The double-sided emission light source 2001 divides the electroluminescent layer into island-like segments, resulting in a uniform surface. It's not light.

[0276] Therefore, by providing a light guide plate 2002, the light is made uniform across the surface.

[0277] Furthermore, on surfaces where the light guide plate 2002 is not placed, the light becomes non-uniform.

[0278] Therefore, if the island-like electroluminescent layers are arranged to form a mark, on the other hand, One surface lights up uniformly, while the other side illuminates the mark, thus combining practicality and style. It is possible to provide a device (or light-emitting panel) that combines these features. Furthermore, it is possible to obtain uniform light across the surface. If the purpose is to achieve the above, a single-sided emission light source may be used. When a single-sided emission light source is used, the light guide plate It is installed on the side from which the light from a single-sided light source is emitted.

[0279] Furthermore, as shown in Figure 30, for example, the light guide plate 2002 is connected to the double-sided light source 2001. By sandwiching it between the display panel 2003, you can enjoy the display on one side and the mark on the other side. It is possible to provide a device (or display device) that emits light. Furthermore, it is possible to obtain uniform light across the surface. If the purpose is to be used, a single-sided emission light source may be used. In the case of a single-sided emission light source, the light guide plate is one side It is installed on the side from which the light from a surface-emitting light source is emitted.

[0280] The display panels include liquid crystal display panels and electrophoretic displays using microcapsules. Panel, organic electroluminescence display panel, inorganic electroluminescence display Panels and the like are available, but are not limited to these.

[0281] Liquid crystal display panels, electrophoretic display panels, and the like are examples of display panels that use optical modulation.

[0282] Organic electroluminescence display panel, inorganic electroluminescence display panel These are self-illuminating display panels.

[0283] By adding a backlight to a self-illuminating display panel, the brightness can be supplemented. can.

[0284] One way to compensate for brightness is when a self-illuminating display panel deteriorates and the display becomes dim. In such cases, the display may be difficult to see in bright places.

[0285] When a backlight is provided for a self-illuminating display panel, the light emission of the self-illuminating display panel A pair of electrodes of a light-emitting element in a self-illuminating display panel so that light is transmitted through the area. It is preferable that it is translucent.

[0286] Marks can be, for example, tile-shaped (Figure 16, etc.), or multiple rings (Figures 20, 22, 25, etc.). Examples include, but are not limited to, symbols, letters, numbers, and geometric patterns (e.g., 28).

[0287] To make one surface more uniform, a tile-like pattern (Figure 16, etc.) or multiple ring-shaped patterns (Figure 20, The configuration in which island-like electroluminescent layers are densely arranged (Figures 22, 25-28, etc.) preferable.

[0288] In Figures 29 and 30, the non-conductive layer is made of light-shielding material (black resin, a laminated structure including a metal layer). It is preferable to leave it as (e.g., construction) because it hides the background.

[0289] In particular, in the case of Figure 30, the mark may become visible due to ambient light on the side where it lights up. Therefore, it is useful to make the non-conductive layer light-shielding.

[0290] Furthermore, the light guide plate is made by mixing a diffusing agent into a resin plate (such as an acrylic plate) to diffuse light, You can use a sheet of resin (such as an acrylic sheet) with a surface treatment to diffuse light, but It is not limited to these. Furthermore, the light guide plate also includes film-like materials. Furthermore, the light guide plate 200 Option 2 is not a mandatory configuration, so you can include it as needed.

[0291] This embodiment can be implemented in combination with all other embodiments.

[0292] (Embodiment 13) Multiple island-like electroluminescent layers may have multiple emission colors. (For example) Then, there are red island-shaped electroluminescent layers and blue island-shaped electroluminescent layers (Light sources having green, island-like electroluminescent layers, etc.)

[0293] Furthermore, the island-shaped electroluminescent layer consists of multiple luminescent layers having different emission colors stacked together. It may have a laminated structure consisting of a red light-emitting layer, a blue light-emitting layer, and a green light-emitting layer. (e.g., island-like electroluminescent layers with a light-emitting layer)

[0294] Furthermore, the multiple island-like electroluminescent layers have multiple emission colors, and the island-like The lectroluminescent layer has a laminated structure in which multiple light-emitting layers with different emission colors are stacked. It's okay to have it.

[0295] By varying the color of the emitted light in this way, it is possible to express a variety of colors, marks, and other things. That is preferable.

[0296] This embodiment can be implemented in combination with all other embodiments. [Explanation of symbols]

[0297] 10 circuit boards 20 First electrode 30 Electroluminescent layer 40 Second electrode 80 pinholes 91 Moisture 92 Moisture 100 First substrate 110 Second substrate 200 First electrode 200 First electrode 300 Non-conductive layer 401 Island-like electroluminescent layer 402 Island-like electroluminescent layer 403 Island-like electroluminescent layer 404 Island-like electroluminescent layer 405 Island-like electroluminescent layer 406 Island-like electroluminescent layer 407 Island-like electroluminescent layer 408 Island-like electroluminescent layer 409 Island-like electroluminescent layer 411 Island-like electroluminescent layer 412 Island-like electroluminescent layer 413 Island-like electroluminescent layer 421 Island-like electroluminescent layer 422 Island-like electroluminescent layer 423 Island-like electroluminescent layer 500 Second electrode 511 Island electrode 512 Island electrode 513 Island electrode 514 Island electrode 515 Island electrode 516 Island electrode 517 Island electrode 518 Island electrode 519 Island electrode 600 Protective film 701 First sealant 702 Second sealing material 703 Third sealing material 901 Mask 902 Mask 903 Mask 904 Mask 905 Mask 906 Mask 907 Mask 908 Mask 909 Masks 2001 Double-sided emission light source 2002 Light guide plate 2003 Display Panel 8001 Dashed line 8002 Dashed line 8003 Dashed line 8004 Dashed line 8011 Dashed line 8012 Dashed line 8021 Dashed line 8022 Dashed line 8121 Connection part 8122 Connection part 8123 Connection part

Claims

[Claim 1] The first electrode and A nonconductive layer having a plurality of openings formed on the first electrode, A plurality of island-shaped electroluminescent layers formed on the first electrode exposed at the plurality of openings, It has a second electrode formed by covering the plurality of island-shaped electroluminescent layers, The ends of the plurality of island-shaped electroluminescent layers are light sources formed on the non-conductive layer.

Images