TW201044909A - Dispersion-type electroluminescence device - Google Patents

Abstract

A dispersion-type electroluminescence device is provided, the dispersion-type electroluminescence device including; a light emitting layer containing ZnS phosphor particles, wherein the dispersion-type electroluminescence device has at least one emission peak in each of a short wavelength range of 450 to 514 nm, an intermediate wavelength range of 515 to 569 nm, and a long wavelength range of 570 to 650 nm, the intensities of the peaks descending in the order of the short wavelength range, the long wavelength range, and the intermediate wavelength range.

Description

201044909 VI. Description of the Invention: [Technical Field] The present invention relates to a dispersion-type electroluminescence (EL) device which exhibits high luminance and excellent color rendering. [Prior Art] The phosphor of the electroluminescence device is a voltage-excited phosphor, which is known to be applicable to a dispersion type electroluminescence device in which a phosphor powder is sandwiched by a pair of xenon electrodes to form a light-emitting element. Or a thin film type electroluminescent device. Dispersive electroluminescent devices typically have a structure comprising two electrodes, at least one of which is transparent, and a dispersion of phosphor powder is sandwiched between the electrodes in a high dielectric constant adhesive. Light is emitted when an alternating electric field is applied between the electrodes. Electroluminescent devices using phosphorescent powders have many advantages, such as surface illumination, thin thickness (several millimeters or even thinner), reduced heat generation, and good luminous efficiency. Therefore, it can be applied to road signs, indoor and outdoor lamps, flat-panel displays (such as liquid crystal displays), light sources, large-area advertising light sources, and the like. Up to now, the dispersion type electroluminescent device which emits white light has at least two emission regions having a high emission intensity, a blue-green region and an orange-red region. For example, a white light-emitting electroluminescent device containing a rosin compound in its light-emitting layer has been disclosed in many patents, including Japanese Patent Laid-Open No. 60-25 1 95A, Japanese Patent Laid-Open No. 60-1 70 1 Patent Publication No. 94A and Japanese Patent Laid-Open No. 2-78188A. Japanese Laid-Open Patent Publication No. 2005-302693A discloses a dispersion type electroluminescent device having two emission peaks to 201044909, one of which is between 45 〇 and 530 nm, and the other is 605 nm or longer. . Japanese Laid-Open Patent Publication No. 2000-230172A describes a phosphor element having a specific absorption wavelength and a specific emission wavelength, which is combined with a blue light-emitting diode to provide white light emission having three peaks. U.S. Patent No. 6,806,642 discloses the provision of a white illuminating electroluminescent lamp having three emission peaks. Further, it is known that the use of small-particle phosphor particles can increase the luminance of light emission as proposed in Japanese Patent Publication No. A-2-02-235080. In the manufacture of an electroluminescent device, the use of small particle phosphor particles increases the number of phosphor particles in the unit of the light-emitting layer, and thus the brightness is improved. An electroluminescent device described in Japanese Laid-Open Patent Publication No. 60-25195A, No. 60-170194A, and No. 2-7 8 1 8 8A, etc., is a material that emits light at about 58 〇 nm, which is A blue-green light-doped copper- and chlorine-containing zinc sulfide phosphor (hereinafter referred to as "ZnS: Cu, Cl") is combined. 〇 For this reason 'When a transparent medium, such as a transparent positive image, is viewed by an electroluminescent device', the color reproduction is significantly less observable than by a conventional surface light source such as a ray tube. For example, in Japanese Laid-Open Patent Publication No. 6()_25 1 95Α, 60·17〇194Α, and 2-7 8 1 8 8A, the white light is obtained by using rose red dye as red light. When a transparent medium (for example, a transparent positive image) is placed thereon, it cannot reproduce red and emit orange light. For example, in the electroluminescent device 201044909 of Japanese Laid-Open Patent Publication No. 2005_302693α, the white light emitted from the light emission in the two wavelength ranges 'shows poor color reproduction in the green range, so there is still improvement in color rendering. Space. The technique disclosed in Japanese Laid-Open Patent Publication No. 2000-230172A and the U.S. Patent No. 6,806,642 cannot provide sufficient color rendering due to an undue defect in luminous intensity. The technique disclosed in Japanese Laid-Open Patent Publication No. 2002-235080A and Japanese Laid-Open Patent Publication No. 2004-265866A has a disadvantage in that the emission wavelength of the phosphor particles of the small particle 〇 is difficult to control. Therefore, it is impossible to obtain a white light-emitting electroluminescence device having high color reproduction and good color rendering with small particle phosphor particles. SUMMARY OF THE INVENTION An object of the present invention is to provide a dispersion type electroluminescent device having excellent color rendering properties. Based on extensive investigation results, the inventors of the present invention have found that a dispersion type electroluminescent device comprising a strontium sulfide phosphor has a high color rendering property obtained from a well-balanced blue, green, and red luminescence, which is The emission spectrum is designed to have at least one peak 至少 in each of at least three wavelength ranges in intensity, which decreases in a particular order. The present invention has been completed on the basis of this finding. (1) A dispersion type electroluminescence device comprising: a light-emitting layer containing zinc sulfide phosphor particles, wherein the dispersion type electroluminescence device has a short wavelength range of 450 to 514 nm, an intermediate wavelength range of 515 to 569 nm, and 570 There is at least one emission peak in the long wavelength range up to 650 nm, and the peak intensity decreases with the order of the short wavelength range of the short wavelength range of 201044909 and the intermediate wavelength range. (2) The dispersion type electroluminescent device according to item (1), wherein the average particle diameter of the adjacent light-emitting particles is 1 μm or more and less than 20 μm ' and the coefficient of variation of the particle diameter is 3% Or larger and less than 4 〇%. (3) The dispersion type electroluminescent device according to Item (1) or (2), further comprising: a red conversion material. (4) The dispersion type electroluminescent device according to Item (3), further comprising: a back surface electrode, wherein the red conversion material is present in a layer between the light emitting layer and the back surface electrode. The dispersion type electroluminescent device according to the item (1) or (2), further comprising: Cao red luminescent phosphor particles. (6) The dispersion type electroluminescence device according to Item (5), wherein the red luminescent phosphor particles have an average particle diameter of Ιμηη or more and 〇 less than 20 μηη, and the coefficient of variation of the particle diameter is 3% or Larger and less than 40%. (7) The dispersion type electroluminescence device according to (1), which is sealed by a gas barrier laminate film, wherein the gas barrier laminate film comprises at least one inorganic layer and at least one substrate layer on the surface of the base film Or above, the organic layer contains a polymerization product of a monomer composition which contains at least one acrylate having a phosphate group. 201044909 [Embodiment] The present invention will be described in detail below. The electroluminescent device of the present invention is designed to provide white light emission. The white light emission spectrum has at least three peaks 値 whose intensity decreases sequentially with the short wavelength range, the long 'wavelength range, and the intermediate wavelength range. A more desirable white light source has a uniform light intensity at each wavelength in the visible range, in which case the highest color rendering is obtained. However, in a dispersion type electroluminescent device, white light is produced in a mixed form, for example, two large-scale light-emitting bands, one from electroluminescence (blue-green light) of zinc sulfide phosphor particles, and the other from transmission. The long-wavelength light is emitted by the long-wavelength conversion material (orange light to red light) as described in the example of Japanese Patent Laid-Open Publication No. 20 0- 3 0269 3 A. Therefore, it is of concern how the vicinity of the wavelengths of blue, green and red light is distributed to make the human eye most susceptible to perception. In other words, the degree of good balance of the emission spectrum at about 450 nm, 530 nm, and 610 nm greatly affects color rendering. Ο The design of the present invention is an emission peak of blue-green light (450 to 530 nm) and orange-red light (605 nm or longer) as suggested in the preceding paragraph of Japanese Patent Laid-Open Publication No. 2005-302693A. In addition, an additional peak in the range of 515 nm to 569 nm is added to improve the most perceptible color, ie green reproduction. The inventors succeeded in providing a peak 値 at a short wavelength range of at least 450 to 514 nm, a peak 至少 at least in the intermediate wavelength range of 515 to 569 nm, and a peak 至少 based on at least a long wavelength range of 570 to 650 nm. A well-balanced white light. The peak of the short wavelength range of 201044909 is preferably in the range of 460 to 5 10 nm, more preferably from 470 to 505 nm. The peaks in the intermediate wavelength range are preferably in the range from 520 to 565 nm, and more preferably from 525 to 560 nm. The peak in the long wavelength range is preferably in the range of from 5 5 5 to 63 0 nm, more preferably from 580 to 610 nm. White light with peaks in these wavelength ranges exhibits good color rendering. The "emission peak" or simply "peak" as used herein refers to a quantitative curve showing a maximum emission intensity in the emission spectrum. The emission intensity of the emission peak is higher than the emission intensity at a wavelength other than 10 nm on both sides of the peak wavelength of the wavelength. The wavelength of the emission peak is designated as "emission peak wavelength" or simply "peak wavelength". The intensity of the emission peak decreases in the order of the short-wavelength emission peak, the long-wavelength emission peak, and the mid-interval wavelength emission peak. The short-wavelength peak intensity is 100, the mid-wavelength peak intensity is 30 to 54, preferably 35 to 52, more preferably 40 to 50, and the long-wavelength peak intensity is 55 to 90, preferably from 59 to 85, and more preferably from 60 to 80. In the present invention, a dispersion type electroluminescence device (inorganic electroluminescence device) having phosphor particles of zinc sulfide dispersed in a binder having a high dielectric constant will be described in detail below. The electroluminescent device of the present invention comprises at least one light-emitting layer containing zinc sulfide phosphor particles between the two opposing electrodes, a transparent electrode, and a back electrode. Preferably, the electroluminescent device comprises a dielectric layer, such as an insulating layer or a barrier layer, between the luminescent layer and the electrodes to avoid failure of the electroluminescent device and to concentrate a stable electric field in the luminescent layer. The material used for illuminating in the longest wavelength range may appear anywhere between the electrodes, but it is preferably in the insulating layer 201044909, more preferably in the middle of the insulating layer near the luminescent layer. The zinc sulfide phosphor particles preferably contain a metal ion such as a chromium ion and a rare earth element such as ruthenium, osmium, iridium or iridium as a phosphorescent activator. Halogen can be added as a co-activator, such as chlorine, bromine and iodine, aluminum, gallium and germanium, if desired. The emission wavelength of the zinc sulfide phosphor particles can be adjusted by the activator and the coactivator. The zinc sulfide phosphor having an emission peak in a short-wavelength region is preferably activated by copper or chlorine, and is hereinafter referred to as "ZnS: Cu, Cl phosphor particles". The content of copper in the ZnS:Cu,Cl phosphor particles is preferably from ΙχΙΟ·4 to ΙχΙΟ·2 mol per ZnS, and more preferably from 5×10·4 to 5χ10_3 mol. The content of chlorine in the ZnS:Cu,Cl phosphor particles is preferably ΙχΙΟ·3 to 1χ1〇2 mol per ZnS of the moir, and more preferably lxl (T2 to lx10i mol). Activation, emission peaks at about 46 〇Iim and 5 〇〇nm overlap each other to produce blue-green electroluminescence, for example, a luminescence with a peak in the range of 4 60 to 510 nm. The color may also preferably be by combining a blue-green luminescent phosphor with a blue electroluminescent phosphor such as ZnS:Cu, Br or ZnS:Cu, I, or a green electroluminescent phosphor, such as ZnS: Cu, Al Or adjusting the blue electroluminescent phosphor and the green electroluminescent phosphor. The above-mentioned luminescent material is preferably combined with a color conversion material that absorbs light emitted from the blue-green luminescent phosphor particles. And converting blue-green light into red light having an emission peak between 570 and 650 nm (hereinafter referred to as "red conversion material"), thereby causing white light emission. It is also possible to use 201044909 to convert blue-green light to 515 to 569. Green color conversion material with emission peak between nm Material (hereinafter referred to as "green conversion material"). In some cases, when the blue-green electroluminescent phosphor is only combined with the red conversion material, three emission peaks appear, and in these cases, the tendency is only used. The reason for the combination of red conversion materials is based on the viewpoint of cost reduction. Since the red conversion material absorbs the luminescence from the zinc sulfide phosphor material and emits red light, the peaks of all emission spectra are subtracted from the red luminescent material from blue-green. The luminescence absorbed by the luminescent zinc sulfide phosphor material is determined by overlapping the residual peaks of the blue-green luminescence and the peaks of the red luminescence by the 〇 color conversion material. Since the absorption of the red luminescent material varies with wavelength, for example, Maximum 値 and minimum 値, so in the combined system, additional peaks appear in the emission spectrum, thereby obtaining highly color-changing white luminescence. Red luminescent phosphorescent material (red electroluminescent material) and green luminescent phosphorescent material (Green electroluminescent material) can be used in place of or in addition to the red conversion material and the green conversion material. When a red or green light-emitting phosphorescent material is used, it is preferably added to the light-emitting layer. Examples of the green light-emitting phosphorescent material are not limited to: ZnS: Cu, Al, and ZnS: Cu, Ga. Examples of red light-emitting phosphorescent materials, However, it is not limited to: ZnS: Cu, In, and CaS: Eu, Ce. Phosphorescent materials including blue-green-emitting zinc sulfide phosphor, red-emitting phosphor, and green-emitting phosphor are not considered regardless of the color of light emission. The coefficient of variation of the average particle diameter and the particle diameter is limited. However, the preferred average particle diameter is 1 or more and less than 20, more preferably 2 |^111 or more and less than 19 μm, and the variation of the particle diameter thereof The coefficient is preferably 3% or more and less than 40%. -10-201044909 The zinc sulfide phosphor used in the present invention can be produced by a baking (solid phase process) method in which a technique independent of the color of electroluminescence is widely used. First, zinc sulfide powder (coarse powder) having a particle diameter of from 1 to 50 nm is prepared in a liquid phase as a host material, i.e., a main particle. Zinc sulphide exhibits a stable hexagonal phase at high temperatures and a stable cubic phase at low temperatures, either or both of which can be utilized. An impurity called an activator or a co-activator and a flux are mixed into the host material, and then the mixture is baked in a crucible at a high temperature of 900 ° C to 1 300 ° C for 30 minutes to 1 hour (first Secondary baking) to obtain a precursor powder of the phosphor. In order to obtain phosphor particles having an average particle diameter as described above and a particle size of a low coefficient of variation, the first baking is preferably carried out at 950 ° C to 1250 ° C, at a temperature of 1 000 ° C to 1 200 ° °C is more preferable, the baking time is preferably 0.5 to 6 hours, and more preferably 1 to 4 hours. The amount of the flux added is preferably 20% by mass or more, more preferably 30% or more, and 40% or more is preferable. The proportion of the flux here is as follows: the proportion of the flux (mass percentage) = the mass of the flux / (the mass of the main particles of the raw material phosphor + the mass of the flux). In the case where the activated body has been previously added with the coarse powder, for example, in the case of producing copper-activated zinc sulfide phosphor particles emitting blue-green light, the original powder of copper and phosphor as the active body is regarded as a whole with each other, thus _ copper Quality is included in the quality of the phosphor raw material. The quality of the flux changes with room temperature and baking temperature. For example: Barium chloride exists in the form of BaCl 2 2 H20 at room temperature, but loses hydration water at the baking temperature to become barium chloride. The "amount of flux" as used in this specification refers to the mass of the flux at room temperature. -11- 201044909 The pre-baked powder obtained by baking is preferably washed with ion-exchanged water to remove the remaining activator, co-activator and flux. The precursor powder obtained through the first baking has a naturally occurring plane stack (double crystal structure). The stack density can be greatly increased without damaging the particles by increasing the impact force in a specific range. Examples of the impingement force are, for example, by directly contacting the precursor powder particles with each other, mixing the precursor powder with spherical beads of alumina such as ball-milled, or colliding the accelerated precursor powder particles with each other. In the case of zinc sulfide, in particular, it has two crystal systems, and 〇 is a cubic system and a hexagonal system, respectively. The former is a lattice structure in which a three-layer ((111) plane) dense lattice is arranged in an ABC ABC manner, and the latter is a lattice-structure in which a dense lattice of repeated intervals is perpendicular to the C-axis in an ABAB manner. When an impact force is applied to zinc sulfide crystals such as ball mills, the dense crystal lattices of the cubic crystal bodies slide with each other (edge dislocations), thereby locally forming a hexagonal structure (ABAB) which loses the C layer. It is also possible that the A and B layers are replaced by each other to form twins. Since impurities are usually concentrated in the crystal lattice defects in the crystal, when the zinc sulfide having the difference is heated to diffuse the activated body (e.g., copper sulfide), the activator precipitates in the stack. In the contact surface of the precipitated activator with the host material, zinc sulfide acts as a luminescent center. For this reason, increasing the stack density can effectively improve the brightness. The precursor powder is then baked a second time. The second baking is performed in a temperature range of 500 ° C to 800 ° C lower than the first baking temperature, and annealing is completed in 30 minutes to 3 hours in a shorter time. The activator thus concentrates in the stack in a concentrated manner. Next, the phosphor precursor particles are etched with an acid (such as hydrochloric acid) at -12-201044909 to remove any metal oxide on the surface, and washed with a solution such as potassium cyanide to remove copper sulfide on the surface, and then It is dried to obtain electroluminescent phosphor particles. Therefore, a phosphorescent body particle having an average particle diameter of 1 μηη or more and less than 20 μm, a particle size coefficient of variation of 3% or more, and less than 4% by weight is obtained. Other methods of preparing phosphor particles include: gas phase methods such as laser evaporation, chemical vapor deposition (CVD), plasma assisted, beaching, and a combination of resistance heating. 〇 or electron beam irradiation method and fluidized oil film vacuum evaporation method; liquid phase method, such as double decomposition method, precursor pyrolysis method, reduction microparticle method, combined with high temperature baking, freeze drying and any liquid phase method described above; Urea melting method; and - Spray pyrolysis method _ The coefficient of variation of the average particle diameter and particle diameter of the phosphor particles can be measured by a laser scattering method. For example, LA-produced by Horiba Ltd. can be used. 920 laser diffraction / scattering particle size analyzer. The "average particle size" referred to in this specification refers to the median diameter.至少 At least one of the phosphorescent materials used in the electroluminescence of the present invention needs to contain zinc sulfide as its host material. Other phosphorescent materials preferably also contain zinc sulfide as the host material. Preferably, each of the phosphorescent materials comprises at least one metal element belonging to Groups 6 to 10 of the transition column of the second column, particularly at least one of molybdenum, platinum and rhodium. The concentration of these metal elements in the zinc sulfide is preferably from 1 x 10·7 to ΙχΙΟ·3 mol per mol of zinc sulfide, more preferably from 1 x 10 -6 to 5 x l 〇 -4 mol. The combination of the metal element and the zinc sulfide particles is preferably carried out by thoroughly honing the -13,044,909 zinc sulfide powder together with a predetermined amount of copper sulfate in deionized water to form a slurry, and then drying the slurry. The dried powder is baked with a co-activator and a co-solvent. Another preferred method of combining the metal with the zinc sulfide particles is to bake the zinc sulfide powder together with the blend by blending the powder of the metal-containing complex with the flux or co-activator. . In both cases, 'Although any compound containing a metal element to be bonded can be used as a source of metal', it is preferred to use a metal complex containing oxygen or nitrogen coordinated to a metal or metal ion. The ligand of the complex may be an organic compound, and 〇 may also be an inorganic compound. Brightness and longevity are further improved by the addition of metallic elements. As disclosed in Japanese Laid-Open Patent Publication No. 2005-283911A, [0028] to [0033], the phosphor particles may have a non-emissive layer on the surface thereof. Light Emitting Layer The light emitting layer is formed by dispersing the above-described phosphor particles in an organic liquid medium and applying the resulting dispersion onto a substrate. Examples of liquid media include organic polymers and high boiling organic solvents. It is preferred that the organic binder is a constituent of the main compound. Preferably, the organic binder has a "stomach number", in particular, at least a portion of the organic binder is preferably a compound such as a polymer having a vinyl fluoride unit or a chlorotrifluoroethylene unit, having a cyanoacetylated hydroxyl group. Polysaccharides, such as cyanoethyl amylopectin and gas ethyl cellulose; or polyvinyl alcohol, such as cyanoacetylated polyvinyl alcohol, phenolic resin, polyethylene, polypropylene, polystyrene resin, epoxy resin, Epoxy resin 'polyvinylidene fluoride and the like. The dielectric constant of the binder can be adjusted by appropriately mixing a high dielectric constant substance such as BaTi03, SrTi03 particles -14- 201044909 into the binder. The phosphor particles are dispersed in the binder by means of a homogenizer, a planetary agitator, a roller stirrer, an ultrasonic disperser, and the like. The binder is preferably used in an amount of from 30% by mass to 90% by mass based on the total solid content of the luminescent layer, and more preferably from 60% by mass to 85 % by mass. With the phosphor content described in this specification, the surface of the luminescent layer is ensured to be smooth. The term "phosphor content" as used herein refers to the total content of all the phosphor particles used. 〇 A particularly preferred binder system is an adhesive system having a cyanoacetylated hydroxyl polymer having a mass of at least 20% by mass, 50% by mass or more based on the total mass of the organic liquid medium used in the light-emitting layer. The thickness of the luminescent layer is preferably at least 20 μηη and less than 80 μηη, more preferably at least 25 μηη and less than 75 μπι. When the thickness of the light-emitting layer is 20 μm or higher, a light-emitting layer having a smooth surface can be formed. Below 80 μηη, an electric field can be effectively applied to the phosphor particles. In the case of the barrier layer described in the present specification, it is recommended to reduce the thickness of the insulating layer described below, and increase the thickness of the light-emitting layer to compensate for the initial brightness which is lowered in order to ensure sufficient durability. To further ensure a good initial brightness, the thickness of the luminescent layer is preferably not more than 70 μχη. Barrier Layer The electroluminescent device of the present invention provides a barrier layer between the transparent electrode and the luminescent layer. For a detailed description of the barrier layer, reference is made to Japanese Patent Laid-Open Publication No. 2007-1246466, the description of [0013] to [0020]. Insulating Layer -15- 201044909 The insulating layer of the electroluminescent device of the present invention may be any material having a high dielectric constant, high insulating properties, and high dielectric collapse. Examples of such dielectric materials include metal oxides and metal nitrides such as BaTi03, KNb03, LiNb03, LiTa〇3, Ta2〇3, BaTa2〇6, γ2〇3, Ah〇3, and A10N. The insulating layer may be formed as a uniform layer or a particle layer containing an organic binder. For example, according to the description of Mat. Res. Bull., Vol. 36, p. The thickness of the insulating layer is preferably 1 μm or more and less than 35 μm, more preferably 12 μm or more and less than 33 μm, and 15 μm or more and less than 31 μm. If it is too thin, the insulating layer is liable to be subjected to dielectric collapse. Too thin an insulating layer reduces the voltage applied to the luminescent layer, resulting in substantial loss of luminescence efficiency. Examples of the organic binder used for the insulating layer include polymers having a relatively high dielectric constant such as cyanoethyl amylopectin, cyanoacetylated polyvinyl alcohol, and cyanoethyl cellulose resin and other resins such as poly Ethylene, polypropylene, polystyrene resin, epoxy resin, epoxy resin, and polyvinylidene fluoride. The dielectric constant can be adjusted by appropriately mixing a high dielectric constant substance such as barium titanate or barium titanate into the resin. The insulating particles can be dispersed by a homogenizer, a planetary agitator, a roller stirrer, an ultrasonic distributor, or the like. Red Material As described above, the electroluminescent device of the present invention may comprise at least one red conversion material, green conversion material, red electroluminescent phosphor, and green electrophoresis in addition to blue-green luminescent bismuth-zinc phosphor particles. Luminescent phosphor. Red -16- 201044909 The color or green conversion material is a red or green organic material which is an inorganic material. It is best to change the material. The organic fluorescent dye ' can be located on the opposite side of the luminescent layer and the transparent layer. The red or green particles are added to the light-emitting layer as a layer independent of the blue-green light-emitting layer. From the electroluminescence of the present invention, the red portion-light wavelength of 5 90 to 65 nm can be placed on the opposite side of the light-emitting layer and the transparent electricity in the light-emitting layer, but the device is included in all the insulating layers. The layer contained in the insulating layer having two or more 〇w or more is preferably located in the absence of red. The preferred example is that the intermediate layer between the insulating layers containing the red material contains a layer of red transition material and emits light. The relationship between the layers is preferably from 1 to 20 μm, and the concentration of the 3 3 conversion material is preferably converted to luminescence of the zinc sulfide, but the organic fluorescent dye or pigment is used for the red or green electroluminescent phosphor. As the color transfer or pigment may be dispersed between the light-emitting layer or the insulating layer electrode, or in the light-emitting layer to the transparent electrode color electroluminescent phosphor may be phosphorescent with blue-green light, or placed between the transparent electrode and the insulating layer, The white light emitted by the outer red or green electroluminescent phosphor light device preferably contains wavelengths in minutes. It is preferable to obtain a red conversion material in the above range or to add a red conversion material between the red conversion materials or to place the light-emitting layer to the transparent electrode interlayer layer. Preferably electroluminescent device color conversion material. More preferably, the insulating layer is separated above the electroluminescence, one or more of which is a color conversion material. Between the insulating layer and the luminescent layer containing the color conversion material. The layer of the other color conversion material is used as a red-free conversion material interlayer. The layer of the material is in the form of a red-free conversion material, and the thickness of the layer containing the red conversion material is preferably ξ 1 7 μm. The red color in the insulating layer accounts for 1% by mass to 20% by mass of the dielectric material (represented by barium titanate) -17 to 201044909, and more preferably 3% by mass to 15% by mass. In the case where the layer containing the red conversion material is sandwiched between the insulating layers without the red conversion material, the thickness of the red conversion material is preferably from 1 to 20 μm, and more preferably from 3 to 10 μπι. The concentration of the red conversion material in the insulating layer is preferably from 1% by mass to 30% by mass, more preferably from 3% by mass to 20% by mass, based on the dielectric material. In the case where the layer containing the red conversion material is sandwiched between the insulating layers without the red conversion material, the layer containing the red conversion material does not contain the dielectric material and is only converted by a high dielectric constant binder and red. The construction of the material is also a preferred embodiment. The following is a detailed description of organic substances. As described above, it is preferable to use an organic fluorescent dye or a dye as a red conversion material. Preferred examples of compounds constituting the luminescent center of the luminescent pigment or dye include red rose, lactone, dibenzopyran, quinoline, benzothiazole, triethylporphyrin, hydrazine, hydrazine A compound in which triphenyl or dinitrile is used as its skeleton. Cyanine dyes, azo dyes, polyparaphenylene polymers, dioxane oligothiophene polymers, hydrazine complexes, hydrazine complexes, and bait complexes are also preferred embodiments. These compounds may be used singly or in the form of a mixture of two or more. The color conversion material can be used in a manner such as being dispersed in a polymer. A fluorescent pigment having a peak emission wavelength in the range as described above can be exemplified by SEL 1 003 manufactured by Shinloihi Co., Ltd., Japan. The luminescence peak wavelength of the fluorescent pigment or dye used can be adjusted to a range by using a filter such as a band pass reflection filter. Transparent Electrode The transparent electrode used in the present invention is uniformly coated by a transparent, conductive -18-201044909 material such as indium tin oxide (ITO), tin oxide, chain doped tin oxide or zinc oxide. The transparent layer or polyethylene terephthalate or cellulose triacetate can be passed through a vapor deposition method, coating, printing or other transparent electrode to have a layered multilayer structure sandwiched by a high refractive index. Conductive polymers include conjugated polymers, which are also used in the fabrication of transparent electrodes. For the transparent description, refer to "Token Research" 日本 "DENJIHA SHIELD ZAIRYO NO GENJYO" and "Japanese Laid-Open Patent Publication No. 9-147639A. It is also preferable to use a transparent conductive sheet having improved conductivity. A transparent conductive sheet is formed on the transparent film or The above-mentioned transparent conductive polymer is obtained by arranging a wire structure formed by arranging a metal and/or an alloy on a transparent film in a net or the like. If a thin wire is used in combination, copper or silver is preferable. The alloy of the upper metal. The transparent guide is used to replace the metal or alloy wire, preferably a conductive or thermally conductive wire material. The width of the wire strand is more than μηη to 1〇〇〇μηη, but not The distance between the wire strands of the wire strands is preferably from 50 μm to 5 lcm. The height (or thickness) of the wire structure is preferably 〇 5 to 5 μηη. The wire structure can be exposed. It is coated on the transparent or coated with a transparent conductive material. On the two kinds of doped tin oxide, zinc matrix, such as a glass-based transparent film, a film is formed by the method. Benzene, a conductive conductive material, Center, Inc.'s TO SYORAI", which is made of a thin wire bundle in the shape of a conductive material, a comb shape, a lattice line, a nickel, a metal, or an electrical material. The wire can be highly conductive: preferably about 0.1 pitch, ie adjacent cm, 1 0 0 μm to 〇. 1 to 10 μm, surface condition of the conductive material, transparent conductive-19- 201044909 The conductive surface of the electrode preferably has a surface roughness of 5 μηι or less. From the viewpoint of good adhesion, the surface roughness is 〇. 0 1 to 5 μ m is preferable, and 0.0 5 to 3 μ m is more preferable. The "surface roughness" of the conductive surface referred to in this specification refers to the measurement of the three-dimensional surface roughness, such as the Surfcom 575A-3DF produced by Tokyo Seimitsu Co., Ltd., which exceeds the measured value. Average amplitude of surface roughness in the 5 mm2 region. When the surface roughness is lower than the resolution of the surface roughness meter, it is measured by a scanning tunneling microscope or an electron microscope. The width, height (or thickness) of the strands, and the relationship between the pitches are determined according to the purpose. Typically, the width of the strands is preferably from -1/1 0000 to 1/10 of the pitch, and the height of the strands is preferably from 1/100 of the width to 10 times the width. The surface resistivity of the transparent electrode is preferably from 0.1 to ΙΟΟ Ω/sq, more preferably from 1 to 80 Q/sq, measured according to the method defined in JIS 691 1. When a fine wire structure of metal and/or alloy is utilized, it is preferable to minimize the reduction of light transmission. It is preferable to ensure that the light transmittance is at least 90% by limiting the pitch, width and height of the strands within the above range. The transparent electrode used in the present invention preferably has a light transmittance of at least 70% at a wavelength of 5 50 nm, more preferably 80%, and particularly preferably 90% or more. In order to improve the brightness and provide white light, the transparent electrode preferably has a light transmittance of at least 80% for light having a wavelength of 420 to 65 nm, and more preferably 90% or more. In order to obtain white light emission, it is more preferable that the transparent electrode has a light transmittance of 80% or more for light having a wavelength of 380 to 680 nm. -20- 201044909 The light transmittance of the transparent electrode is measured by a spectrophotometer. The back electrode which is not extracted when the back electrode passes through the emitted light may be from any of the following conductive materials such as gold, silver, copper, iron, aluminum, and *graphite, depending on the type of the electroluminescent device, The temperature during the manufacturing process is selected as appropriate for a similar situation. For example, a transparent electrode made of indium tin oxide (ITO) can be used as long as conductivity can be ensured. For the back electrode, it is very important to have a high thermal conductivity, especially if the thermal conductivity is at least 2.0 W/(cm_deg), preferably 2.5 W/(cm.deg) or higher. Improved durability. Another preferred method is to use a metal sheet or a metal mesh as the back electrode to ensure high conductivity and efficient heat dissipation around the electroluminescent device. Manufacturing Method There is no limitation on the method of producing the electroluminescent device of the present invention. The Ο manufacturing method described in detail in Japanese Patent Laid-Open Publication No. 2007-1-2466A [0046] to [0049] can be suitably employed. Packaging In the final step of manufacturing an electroluminescent device, the device is preferably packaged as a sealing film to protect the device from the humidity and oxygen of the external environment. For details of the packaging technique, reference is made to the description of Japanese Laid-Open Patent Publication No. 2007-12466A [0050] to [0055]. A gas barrier laminate film is a preferred sealing film. In the following, the description of the various elements of the present invention may be made in accordance with the representative embodiments of the present invention in the case of the present invention. In the case of the present invention, it should be understood that the present invention is not limited to the specific embodiment. Gas barrier laminated film The laminated structure is preferably a gas barrier laminated film as a sealing film, which preferably comprises a base film, at least one inorganic layer, and at least one organic layer. The number and order of the inorganic layer and the organic layer formed on the base film are not limited. The inorganic layer and the organic layer may be formed on the base film in this order or in reverse order. Preferably, the laminated film has a staggered organic layer and an inorganic layer on the base film, and for example, an inorganic layer, an organic layer, and an inorganic layer are sequentially provided on the base film. The number of layers of the inorganic layer and the organic layered layer is preferably from 1 to 10 layers each, more preferably from 1 to 5 layers, and most preferably from 1 to 3 layers. The inorganic layer and the organic layer may be laminated on one side or both sides of the base film. The functional layer may be formed between the base film and the inorganic layer, between the base film and the organic layer, or between the inorganic layer and the organic layer. Examples of the functional layer include an optical functional layer such as an antireflection layer, a polarizing layer, a color filter, and a light extraction efficiency enhancement layer; a mechanical functional layer such as a hardened layer and a rolled layer; an electron such as an antistatic layer and a conductive layer ^ Functional layer; anti-fog layer, anti-fouling layer, and printable layer. Organic layer The organic layer constituting the gas barrier laminate film may be a film of a polymer containing a phosphate group. The polymer having a phosphate group can be obtained by polymerizing a monomer composition containing a polymerizable monomer having at least one phosphate group. A laminated film having an inorganic layer and an organic layer containing a phosphate based on one side of the base film, and a gas barrier layer composed of an inorganic layer and an organic layer in the order of -22-201044909 and an inorganic layer on the opposite side of the base film film. The laminated film having such a gas barrier layer can prevent the intrusion of water molecules from the opposite side, thereby controlling the dimensional change of the gas barrier laminate film and avoiding stress concentration in the inorganic layer or destruction of the inorganic layer, thereby further improving Its durability. The preferred monomer having a phosphate group can be represented by the following chemical formula (1).

0 Ac1—0—X1—0—P—0—Z1

2 Chemical formula (1) In the chemical formula (1), Z1 represents Ac2-0-X2-, a substituent having no polymerizable group or a hydrogen atom; Z2 represents Ac3-0-X3-, and has no polymerizable group a substituent or a hydrogen atom: Ac1, Ac2 and Ac3 each independently represent an acryloyl group or a methacryloyl group; and X1, X2 and X3 each independently represent an alkylene group, an alkoxy group, an alkyloxycarbonyl group, and a stretching group. Alkylcarbonyloxy' or a combination of the above. The monomer represented by the chemical formula (1) may be a monofunctional monomer represented by the following chemical formula (2), a difunctional monomer represented by the following chemical formula (3), or a trifunctional monomer represented by the following chemical formula (4) . 〇 Λ 1 , II ,

Ac1_0一X1—〇一一一一—R1 ό—R2 Chemical Formula (2) -23- 201044909 〇

Ac1—Ο—X1—〇一p—〇—χ2—〇一Ac2 I 9 0—R2 Chemical Formula (3 〇

Ac]一O—X"*—〇—ρ—〇一χ2—ο一Ac2 Chemical Formula (4) Ο—X3 一Ο一Ac3 0 八(;1,八(52,八(?3,又1,; ^2 and ;3 are defined as the chemical formula (1). In the chemical formulas (2) and (3), R1 and R2 each independently represent a substituent having no polymerizable group or a hydrogen atom. In the chemical formula (1) to In (4), X1, X2 and X3 preferably have 1 to 12 carbon atoms each, preferably 1 to 6 carbon atoms, and 1 to 4 carbon atoms are the best, represented by X1, X2 and X3. Examples of the alkylene or alkylene moiety of the alkyloxy group, the alkyloxycarbonyl group, the alkylcarbonyloxy group include methylene, ethylene, propylene, butylene, pentadiene and hexene. The alkylene group or the alkylene moiety may be straight or branched, but is preferably a straight chain. Each of X1, X2 and X3 is preferably an alkyl group. There is no chemical formula (1) to (4). Examples of the substituent of the polymerizable group include an alkyl group, an alkoxy group, an aryl group, an aryloxy group, and combinations thereof. 'Substituents having no polymerizable group, preferably an alkyl group or an alkoxy group Base, - more preferably alkoxy. The radical is preferably from 1 to 12 carbon atoms, more preferably from 1 to 9 carbon atoms, preferably from 1 to 6 carbon atoms. Examples of alkyl groups such as methyl, ethyl, propyl, butyl, The pentyl group and the hexyl group may be a straight chain or a branched chain, but a linear chain is preferred. The alkyl group may be substituted with an alkoxy group, an aryl group, and an -24-201044909 aryloxy group. More preferably, it has 6 to 14 carbon atoms and 6 to 碳 carbon atoms. Examples of aryl groups are phenyl, 1-naphthyl and 2-naphthyl. The aryl group may be an alkyl group, an alkoxy group and The aryloxy group and the like are substituted. The above descriptions of the alkyl group and the aryl group are also respectively applicable to the alkyl moiety of the alkoxy group, and the aryl moiety of the 'aryloxy group. The monomer in the formula (1) can be used alone. Used in combination with two or more monomers. When two or more monomers in the formula (1) are used in combination, two or more monofunctional singles are combined. The body is represented by the chemical formula (2), the bifunctional monomer is represented by the chemical formula (3), and the trifunctional monomer is represented by the chemical formula (4). The polymerizable monomer having a phosphate group can be used. It can be obtained by a synthetic method, or it can be a commercially available compound, such as a product produced by Nippon Kayaku Co., Ltd., a product of the trade name "KAYAMER", and a product of Uni-Chemical Co., Ltd., trade name "PHOSMER". For a detailed description of the phosphate ester used as the organic layer of the sealing film (gas barrier laminated film), the description of JP-A-2007-290369A [0020] to [0042] can be referred to. The use of an electroluminescent device in applications where high brightness requirements, such as 600 candelas per square meter or more, is particularly efficient, especially when the electroluminescent device is applied between 100 and 500 volts between the transparent and the back electrodes. This is especially effective at voltages or when driven from an AC source at a frequency of 800 Hz to 4000 kHz. The dispersion type electroluminescent device of the present invention will be described by the following examples, but should not be construed as being limited to the description herein. -25- 201044909 Example 1 The first layer (insulating layer, thickness: 30 μηι) and the second layer (light-emitting layer, thickness: 55 μΐη) as described below were coated through an aluminum electrode (back surface electrode) having a thickness of 70 μm. A variety of coating compositions whose viscosities were controlled by dimethylformamide were dried at Η ° C for 10 hours and sequentially formed on the aluminum electrode. A polyethylene terephthalate film having a thickness of 75 μm was prepared, which was formed by sputtering, and indium tin oxide (transparent electrode) having a thickness of 40 μm. The second layer (the luminescent layer) and the indium tin oxide layer were pressure-bonded under a nitrogen gas using a 190 ° C hot roll tube. The composition of the first layer and the second layer described below is divided into masses per square meter of the electroluminescent device. The first layer (insulation layer, containing red conversion material) cyanoethyl amylopectin 14.0 g cyanide polyvinyl alcohol 10.0 g barium titanate particles (average sphere equivalent diameter: 〇. 〇 5 μm) 10 0.0 g red Conversion material (SEL 1003, Shinloihi Co,, Ltd.) 1. 〇 Ο Ο second layer (light-emitting layer) cyanoethyl amylopectin 18.0 g of cyanoacetylated polyvinyl alcohol 12.0 g of phosphor particles Α (described below) 120.0 Preparation of gram phosphor particle A: 150 g of zinc sulfide (purity: 99.999%, Gunne Chemical Co., Ltd.) was added to water to prepare a slurry. The slurry is added with an amount of 0.53 8 g of CuS04·5H20, and an aqueous solution of sodium chloroauric acid -26-201044909 in a molar concentration of 0.0001 mol% according to the molar number of zinc, thereby forming copper-doped zinc sulfide. Coarse powder (copper content: 1.4 χ 1 per mole of zinc sulfide (Γ 3 mol; average particle size: 100 nm). 25.0 g of the obtained crude powder and BaCl 2 * 2 H 202.1 g as a flux, chlorine MgCl 2 6H20 4.25 g, and SrCl2. 6H20 1.0 g was mixed. The mixture was baked at 120 ° C for 4 hours to form a phosphor precursor. The phosphorescent precursor was rinsed 10 times with ion-exchanged water and dried. , honed in a ball mill, and then annealed at 700 ° C for 4 hours. The obtained phosphor particles are washed with an aqueous solution of 10% potassium cyanide to remove residual copper ions (copper sulfide) on the surface, and then Rinse 5 times with water to form phosphor particles A. Phosphor particles A have an average particle size of 24 μηη and a particle size coefficient of variation of 36%, which is produced by Japan Horiba, LA-920 laser diffraction/scattering particles. The analyzer was measured. The electrode terminal (aluminum sheet with a thickness of 60 μηη) was Attached to the aluminum electrode and the transparent electrode. This structure is sealed by a pair of moisture-proof sealing films (GX film, Letterpress Printing Co., Ltd.), which is heat-sealed when evacuated. The electroluminescent device thus obtained is obtained. No. 101. ^ Electroluminescent devices No. 102 and No. 103 were manufactured in the same manner as the electroluminescent device No. 101 except that SEL 1 003 was respectively converted to red material FA 001 or FA 003 (both by Shinloihi) Replaced by Co., Ltd.. The electroluminescent devices No. 101 to 103 are continuously operated with an AC power supply of 1 Hz frequency and a voltage of 300 volts. The emission spectra of the respective electroluminescent devices are Measured to see if it has a peak in each specific wavelength range, and a peak-to-peak wavelength in each wavelength range, and a relative peak of its peak intensity in the shorter wavelength range of -27-201044909 and 100 Å値 strength. The results are shown in Table 1. Table 1 EL device red conversion peak 値 wavelength / relative peak intensity in the following wavelength range Remarks No. Material 450 to 514 515 to 569 570 to 650 nm Nm nm 101 SEL 1003 appeared invented 487 nm/100 549 nm/49 598 nm/80 102 FA002 appeared Μ control group 469 nm/100 565 nm/123 103 FA003 Arr • π appeared in the control group 503 nm/100 581 Nm/70

Each electroluminescent device was driven with a drive voltage (about 140 V) and a frequency (about 1.1 kHz), both of which were adjusted to provide a luminous intensity of 500 cd/m2. The color rendering index of the luminescence was measured, and the results are shown in Table 2. A fruit-and-fruit salad containing broccoli and tomatoes, a transparent medium containing red, yellow, green, and blue flowers and plants and sky scenery (G-Color Print, manufactured by Fujifilm) will be placed in each. The electroluminescent device is evaluated and the transmitted image is evaluated. The summary of the evaluation results is shown in Table 2 ° -28- 201044909 Table 2 Evaluation results of the EL device number color rendering index transmitted image 101 82 All images, fruits and vegetables and landscape images are displayed with the accuracy of the original 102 67 It is bluish, so the color of the person and the color of the tomato are significantly different from the original color. 103 77 Image tones are generally yellowish. Especially the color of the human body has obvious differences in color. 〇Example 2 In addition to changing the fluxes BaCl2 · 2Η20, MgCl2 · 6Η20, SrCl2 · 6Η20, respectively, the amount of the phosphor was 4.2 g, 11.2 g, and 9.0 g, and the phosphor particles were prepared in the same manner as the phosphor particles. . The average particle diameter of the phosphor particles 17 was 17 μm, and the coefficient of variation of the particle diameter was 31%. The electroluminescent devices Nos. 104 to 106 were fabricated in the same manner as the electroluminescent devices Nos. 101 to 103 except that the phosphor particles were replaced by phosphor particles.电 The electroluminescent devices numbered 104 to 106 and the electroluminescent devices numbered 101 to 103 have equal results in evaluation of emission peak shape, color rendering, and G - C ο 1 〇 r. The electroluminescent devices Nos. 104 to 106 have an emission intensity of about 1.4 times that of the electroluminescent devices numbered 101 to 103 due to the relationship of the particle size reduction of the phosphor particles. In terms of G-Color evaluation, the illuminance is 500 cd/m2 at a driving voltage of about 120 V, which is about 20 V lower than the voltage required in Example 1. Therefore, although color rendering does not follow the phosphor particles The change in particle size changes, but the brightness of -29-201044909 is improved due to the decrease in driving voltage. Example 3 An electroluminescent device Nos. 107 to 109 was manufactured and evaluated in the same manner as in Example 2 except that the layered structure was changed in the following manner. Both the first layer and the second layer have a thickness of 14 μm. The first layer (insulating layer, no red conversion material) cyanoethyl amylopectin 7.0 g cyanoacetylated polyvinyl alcohol 5. 〇 Ο barium titanate particles (average sphere equivalent diameter: 0.05 μϊη) 50_0 g second Layer (insulation layer, containing red conversion material) cyanoethyl amylopectin 7.0 g. Cyanide polyvinyl alcohol 5. gram barium titanate particles (average sphere equivalent diameter: 0·05 μηι) 50.0 g red conversion material 3 .3rd layer of gram (light-emitting layer) 18.0g of cyanoethyl amylopectin 氰Cyanide-acetylated polyvinyl alcohol - 12.0g of light-grain particles Β 120.0g has been confirmed by dividing the insulating layer in Example 2 Two sub-layers' and red conversion materials are added to one of the sub-layers. In each electroluminescent device, the emission peak in the longest wavelength range is a change of the layered structure of about 5 nm to the longer wavelength 并未. Change the luminescent properties (such as the intensity ratio). The G-color evaluation results obtained in the same manner as in Example 1 are shown in Table 3, and the color rendering index is also shown in Table 3 of -30-201044909. Table 3 EL device number Color rendering index Evaluation results of transmitted images 107 86 A better red reproduction (for example: tomato) is achieved, so that a clear and bright color reproduction can be achieved. 108 70 Blue tones cannot be completely removed, so the colors are significantly different from the original colors. 109 78 The image is not only yellowish in color, but also red is enhanced, resulting in an unsatisfactory blue reproduction. Example 4 Except that the red conversion material was not used, and the phosphor particles of 10% by weight and 30% by weight of ZnS:Cu, Al and ZnS:Cu,In were respectively substituted, the electroluminescent device of No. 110 was implemented. The electroluminescent device of No. 104 of Example 2 was produced in the same manner. ZnS__Cu, Al and ZnS: Cu, In were obtained in the same manner as described in Example 2, except that 0.70 g of A12S3 and 0.15 g of In2S3 were separately added. ZnS: Cu, Al has an average particle diameter of 18 μηι, a particle size coefficient of variation of 33%, and ZnS:Cu, In has an average particle diameter of 19 μηη, and a particle size coefficient of variation of 37%. The resulting electroluminescent device has an emission peak in each of the three wavelength ranges similar to the electroluminescent device numbered 1 to 4 in Example 2, and shows in terms of color rendering and color reproduction of the G-color evaluation. The result of satisfactory people. It can be seen from the results of the foregoing embodiments that at least one of the following three wavelength ranges: (1) 45 0 to 514 nm, (2) 515 to 569 nm, (3) 5 70 to 650 nm, and -31 to 201044909 The emission spectrum of the peak ,, the peak intensity decreases in the order of (1), (3), and (2), and provides an electroluminescence device having excellent color rendering and color reproduction. Example 5 'Electroluminescent device No. 201 was electroporated with the number 101 of Example 1 except that the GX film was replaced with a polyethylene terephthalate film (Teijin DuPont Film Co., Ltd., Teonex Q65FA) as a sealing film. The illuminating device is manufactured in the same manner. 1 Each of the following acrylate compounds having a phosphate group is 1 g each: Compound A (KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), Compound B (Light Ester P-2M, produced by Kyoeisha Chemical Co., Ltd.) ), and Compound C (V#3PA, Osaka Organic Chemical Industry), Compound D (TOP OLEN, manufactured by Shin-Nakamura Chemical Co., Ltd.) as an acrylate having a hydroxyl group; Compound E (M5) shown below 300, produced by East Asia Synthetic Co., Ltd. as an acrylate having a carboxyl group; compound F (AAEMA, Aldrich) shown below as a propylene phthalate having an acetamidine structure; and a compound G as shown below (Light Acrylate TMP) -A, Kyoeisha Chemical Co., Ltd. as a trifunctional polymerizable acrylate, mixed with 9 g of a photopolymerizable compound (Light Acrylate BEPG-A, manufactured by Kyoeisha Chemical Co., Ltd.) shown below. The mixture was dissolved in 190 g of methyl ethyl ketone with 0.6 g of a photopolymerization initiator (IRGACURE 907, available from Ciba Geigy) to prepare a coating composition. The composition was coated on a smooth surface of a polyethylene naphthalate film (Tenoex Q65FA) as previously used, and was purged with nitrogen at -32 to 201044909, and the oxygen concentration was not exceeded. In a 0%, 1% environment, a 160W/cm air-cooled halogen lamp (made by Eye Graphics) is used to provide a total thickness of 500 mJ/cm2 with ultraviolet light of 305 mW/cm2 to form a thickness. An organic layer of approximately 50,000 nm. By sputtering, aluminum is used as a target, argon is a discharge gas, and oxygen is used as a reaction gas to form an inorganic layer of alumina having a thickness of 50 nm on the organic layer. Applying the same coating composition as the above-mentioned organic layer to the inorganic layer by the #6 line material, and using 160 W/cm in an environment where nitrogen gas is discharged and the oxygen concentration is not more than 0.1%. An air-cooled lamp (manufactured by Eye Graphics) was irradiated with ultraviolet rays of 305 mW/cm 2 to provide a total energy of 500 mJ/cm 2 to form an organic layer having a thickness of about 50 Å. Thus, a laminated film having an organic layer/inorganic layer/organic layer structure on the base film was obtained. The laminate films obtained by using the compound A, B, C, D, E, F or G in the organic layer are numbered 202A, 202B, 202C, 202D, 202E, 202F, or 202G, respectively. -33- 201044909 Compound A : 〇 ^COO^^〇C〇(CH^〇tHOHV5 Ί.5 Compound B:

OH <^COO^^°^ P/〇v-^〇CO^ o

-34- 201044909 Photopolymerizable compound: c2H5 h2c=ch-*coo-ch2-c-ch2-coo-ch=ch2 ri-C4H9 Compound D:

OH compound Ε : <^COO 死,士Η Ο compound F : ο ο Compound G : -35- 201044909

Ο

The electroluminescent devices Nos. 202A to 202G were fabricated in the same manner as the electroluminescent device No. 201 except that a laminated film of 202 A to 202 G was used as the sealing film, respectively. The electroluminescent devices of No. 201 and 202 A to 202G were continuously operated for more than 2,500 hours in an environment of 40 ° C and a relative humidity of 85%. The emission intensity of the device at the peak wavelength of 487 nm was measured at the beginning (〇 hour), after 24 hours, and after 205 hours. The intensity of the electroluminescent device No. 201 at 0 hours was set to 1 Torr, and the results are shown in Table 4. The results in Table 4 demonstrate that all of the electroluminescent devices numbered 202A through 202G have only a slight impairment in their emission intensity after 24 hours of operation. In particular, the devices numbered 202A to 202C have only a slight impairment after 25 hours of continuous operation. -36- 201044909 Table 4 Relative Brightness of EL Device Sealing Film after Continuous Operation Remarks No. Compound Compound Oh 24h 2500h 201 Μ /\w 100 52 5 Invention 202A A 104 100 90 Invention 202B B 102 98 85 Invention 202C C 102 98 85 Invention 202D D 101 93 70 Invention 202E E 101 93 70 Invention 202F F 101 95 79 Invention 202G G 102 97 83 Industrial Applicability of the Invention. The present invention provides a dispersion type electroluminescent device which achieves a high degree of color rendering on luminescence Sex. The present application is based on Japanese Patent Application No. 2009-088519, filed on March 31, the entire content of which is incorporated herein by reference. ❹ [Simple description of the diagram] Μ . [Main component symbol description] 〇 -37-

Claims (1)

201044909 VII. Patent application scope: 1. A dispersion type electroluminescent device comprising: a light-emitting layer containing zinc sulfide phosphor particles, wherein the dispersion type electroluminescent device has a short wavelength range of 450 to 514 nm, 515 to The intermediate wavelength range of 569 nm and the long wavelength range of 570 to 650 nm each have at least one emission peak, and the peak intensity decreases with the order of the short wavelength range, the long wavelength range, and the intermediate wavelength range. 2. The dispersion type electroluminescent device according to claim 1, wherein the phosphor particles have an average particle diameter of 1 μm or more and less than 20 μm, and the coefficient of variation of the particle diameter is 3% or more. Large and less than 40%. 3. The dispersion type electroluminescent device according to claim 1 or 2, further comprising: a red conversion material. 4. The dispersion type electroluminescent device according to claim 3, further comprising __ a back electrode, wherein the red conversion material is a layer which is present between the light-emitting layer and the back electrode. 5. The dispersion type electroluminescent device of claim 1 or 2, further comprising: * red luminescent phosphor particles. 6. The dispersion type electroluminescent device according to claim 5, wherein the red luminescent phosphor particles have an average particle diameter of 1 μηι or more and less than 20 μm, and the coefficient of variation of the particle diameter is 3%. Or larger and less than -38- 201044909 · 4 0%. 7. The dispersion type electroluminescent device according to claim 1, which is sealed by a gas barrier laminated film, wherein the gas barrier laminated film comprises at least one inorganic layer and at least one having an organic layer on the surface of the base film Above or above, the organic layer contains a polymerization product of a monomer composition containing at least one acrylate having a phosphate group. 〇 -39- 201044909 IV. Designated representative map: (1) The representative representative of the case is: None. (2) A brief description of the symbol of the representative figure: te . 5. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: 〇