WO2016171207A1 - Substrat de conversion de longueur d'onde, dispositif électroluminescent, et appareil d'affichage, appareil d'éclairage et équipement électronique les comprenant - Google Patents

Substrat de conversion de longueur d'onde, dispositif électroluminescent, et appareil d'affichage, appareil d'éclairage et équipement électronique les comprenant Download PDF

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WO2016171207A1
WO2016171207A1 PCT/JP2016/062622 JP2016062622W WO2016171207A1 WO 2016171207 A1 WO2016171207 A1 WO 2016171207A1 JP 2016062622 W JP2016062622 W JP 2016062622W WO 2016171207 A1 WO2016171207 A1 WO 2016171207A1
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Prior art keywords
light
wavelength conversion
organic
layer
pixel portion
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PCT/JP2016/062622
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English (en)
Japanese (ja)
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秀謙 尾方
礼隆 遠藤
晶子 岩田
麻絵 伊藤
大江　昌人
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シャープ株式会社
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the present invention relates to a wavelength conversion substrate, a light-emitting device, a display device including the same, a lighting device, and an electronic apparatus.
  • an organic EL display device that realizes multicolor light emission is a color conversion type (wavelength conversion type) organic EL display device.
  • the wavelength conversion type organic EL display device can be easily manufactured because it can use a monochromatic light-emitting organic EL element, and therefore, development to a large screen display has been actively studied.
  • As the wavelength conversion layer a layer in which a fluorescent dye is dispersed in a polymer resin is known.
  • the red wavelength conversion layer and the green wavelength conversion layer are patterned into a predetermined shape by photolithography of a photopolymerizable polymer resin in which a fluorescent dye is dispersed.
  • a positive type is preferable as the polymer resin.
  • the other wavelength conversion layer is patterned. Therefore, the previously formed wavelength conversion layer is irradiated with light by photolithography of the wavelength conversion layer to be formed next, and the fluorescent dye contained in the previously formed wavelength conversion layer is deteriorated, The color conversion efficiency of the previously formed wavelength conversion layer may decrease. The color conversion efficiency of the wavelength conversion layer may cause an increase in power consumption of the organic EL display device.
  • the color conversion substrate examples include a transparent substrate and light output units having at least three different output wavelength distributions arranged independently on the transparent substrate, and the light output unit is a part of incident light. At least one of a color filter layer that transmits light and a color conversion layer that absorbs incident light and outputs light of different wavelength distribution, and the first light output unit includes a color conversion layer, a transparent substrate, and color conversion A first dichroic filter that transmits light in the output wavelength region of the color conversion layer and reflects light in other wavelength regions between the layers, and the second light output unit includes a color conversion layer, It is known that the color conversion layer of the first light output unit and the color conversion layer of the second light output unit are made of the same material (for example, see Patent Document 1).
  • the color conversion substrate of Patent Document 1 there is no partition between adjacent light output portions on the substrate on which the color conversion layer is provided. Therefore, when the pixel resolution is increased, chromaticity due to light leakage between adjacent pixels. Deterioration and contrast reduction.
  • the color conversion layer of the first light output unit and the color conversion layer of the second light output unit are formed of the same material, the light output from the color conversion layer is the same as that of the first light output unit. It includes the wavelength component of the light output from the second light output unit. Therefore, since the unnecessary wavelength component of the light wavelength components output from the first light output unit and the second light output unit is cut by the filter, the first light output unit and the second light output. The power consumption for outputting light of a specific luminance from the unit increases.
  • An object is to provide a display device, a lighting device, and an electronic device.
  • a wavelength conversion substrate includes a transparent substrate, and a light output unit having at least three different output wavelength distributions arranged independently on one surface of the transparent substrate,
  • the light output unit includes a grid-like black matrix, a partition provided on the black matrix, a color filter layer that transmits a part of incident light into a plurality of regions defined by the partition, and an incident At least one of a wavelength conversion layer that absorbs light and outputs light having a different wavelength distribution, and the wavelength conversion layer outputs an output wavelength output from the first light output unit and the second light output unit. It is made of a material that outputs light including distribution.
  • the wavelength conversion layer may include at least one fluorescent dye.
  • the light output unit may include a region that outputs light output from the wavelength conversion layer without passing through the color filter layer.
  • the light output unit may include a region having the color filter layer that transmits a center wavelength of a wavelength distribution of light output from the wavelength conversion layer.
  • the partition may be made of a light absorbing material.
  • the partition may be made of a light reflective material or a light scattering material.
  • the width of the portion of the partition that partitions the blue light output portion may be larger than the width of the portion of the partition that partitions the light output portion other than blue. Good.
  • the light-emitting device includes the wavelength conversion substrate according to one aspect of the present invention and an excitation light source provided on the incident light surface side of the wavelength conversion substrate.
  • the excitation light source may be a light source that emits light in an ultraviolet wavelength region to a blue-green wavelength region.
  • the excitation light source may be any of a light emitting diode, an organic electroluminescent element, and an inorganic electroluminescent element.
  • the display device, lighting device, and electronic device according to one aspect of the present invention include the light-emitting device according to one aspect of the present invention.
  • a wavelength conversion substrate that prevents a shift from occurring in alignment between at least two different light output portions.
  • FIG. 1A is a cross-sectional view illustrating a schematic configuration of an organic EL light emitting device according to a first embodiment of the present invention.
  • FIG. 1B is a diagram showing a schematic configuration of the organic EL element.
  • FIG. 1C is a cross-sectional view showing another schematic configuration of the organic EL light emitting device according to the first embodiment of the present invention.
  • the organic EL light emitting device 100 of this embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the organic EL element substrate 10 mainly includes a substrate 11, a TFT (thin film transistor) circuit 12, and an organic EL element (organic light emitting element) 40.
  • a plurality of organic EL elements 40 are provided on the substrate 11 including the TFT circuit 12. Is provided.
  • the wavelength conversion substrate 20 includes a transparent substrate 21, a grid-like black matrix 22 provided on one surface 21 a of the transparent substrate 21, a partition wall 23 provided on the black matrix 22, and one surface of the transparent substrate 21.
  • a color filter layer 24, a wavelength conversion layer 25, and a scattering layer 26 provided in a plurality of regions partitioned by the partition wall 23 are mainly configured.
  • a color filter layer 24 and a wavelength conversion layer 25 corresponding to the R (red), G (green), and B (blue) subpixels S are provided on the one surface 21 a side of the transparent substrate 21. It has been.
  • the wavelength conversion substrate 20 is provided with a circularly polarizing plate 27 on the other surface (the surface opposite to the one surface 21 a) 21 b of the transparent substrate 21. Further, the wavelength conversion substrate 20 is provided with a protective layer 28 on the one surface 21 a side of the transparent substrate 21 so as to cover the partition wall 23, the wavelength conversion layer 25, and the scattering layer 26.
  • the organic EL light emitting device 100 of the present embodiment light from the ultraviolet wavelength region to the blue-green wavelength region emitted from the organic EL element 40 that is a light source enters the wavelength conversion layer 25 and the color filter layer 24. As a result, light of three colors of red, green, and blue is emitted to the outside (observer side) of the wavelength conversion substrate 20.
  • the organic EL element 40 includes an organic EL layer 41 sandwiched between a first electrode 42 and a second electrode 43.
  • the first electrode 42 is connected to one of the TFT circuits 12 by a contact hole 12b provided through the interlayer insulating film 13 and the planarizing film 14.
  • the second electrode 43 is connected to one of the TFT circuits 12 by a wiring (not shown) provided through the interlayer insulating film 13 and the planarizing film 14.
  • the organic EL light emitting device 100 of this embodiment has a plurality of pixels. Each pixel has three sub-pixels S (red pixel portion S (R), green pixel portion S (G), blue pixel corresponding to red light (R), green light (G), and blue light (B), respectively. Part S (B)). That is, the organic EL light emitting device 100 of the present embodiment includes light output units 51, 52, and 53 having three different output wavelength distributions. In the organic EL light emitting device 100 of the present embodiment, the light output unit corresponding to the red pixel unit S (R) is the first light output unit 51, and the light output unit corresponding to the green pixel unit S (G) is the second light output unit. A light output unit corresponding to the light output unit 52 and the blue pixel unit S (B) is referred to as a third light output unit 53.
  • the red pixel portion S (R), the green pixel portion S (G), and the blue pixel portion S (B) extend in a stripe shape along the y axis, and the red pixel portion S (R), green color along the x axis.
  • the pixel portion S (G) and the blue pixel portion S (B) are arranged in this order to form a two-dimensional stripe arrangement.
  • the organic EL element substrate 10 includes an active matrix substrate 15, a plurality of organic EL elements 40 provided on the active matrix substrate 15, a partition wall 16, and a sealing layer 17. It is configured.
  • the active matrix substrate 15 includes a substrate 11, a TFT circuit 12 formed on the substrate 11, an interlayer insulating film 13, and a planarizing film 14.
  • a TFT circuit 12 and various wirings (not shown) are formed on the substrate 11, and an interlayer insulating film 13 and a planarizing film 14 are sequentially stacked so as to cover the upper surface of the substrate 11 and the TFT circuit 12. .
  • substrate etc. which performed the insulation process by the method are mentioned, this embodiment is not limited to these.
  • the TFT circuit 12 is formed on the substrate 11 in advance before the organic EL element 40 is formed, and functions as a switching device and a driving device.
  • a conventionally known TFT circuit can be used.
  • a metal-insulator-metal (MIM) diode can be used as a switching and driving element instead of the TFT.
  • the TFT circuit 12 can be formed using a known material, structure, and formation method.
  • Examples of the material of the active layer of the TFT circuit 12 include inorganic semiconductor materials such as amorphous silicon (amorphous silicon), polycrystalline silicon (polysilicon), microcrystalline silicon, and cadmium selenide, zinc oxide, indium oxide-oxide.
  • Examples thereof include oxide semiconductor materials such as gallium-zinc oxide, and organic semiconductor materials such as polythiophene derivatives, thiophene oligomers, poly (p-ferylene vinylene) derivatives, naphthacene, and pentacene.
  • Examples of the structure of the TFT circuit 12 include a staggered type, an inverted staggered type, a top gate type, and a coplanar type.
  • the gate insulating film of the TFT circuit 12 used in this embodiment can be formed using a known material. Examples thereof include SiO 2 formed by plasma oxidation chemical vapor deposition (PECVD), low pressure chemical vapor deposition (LPCVD), or the like, or SiO 2 obtained by thermally oxidizing a polysilicon film. Further, the signal electrode line, the scanning electrode line, the common electrode line, the first drive electrode, and the second drive electrode of the TFT circuit 12 used in this embodiment can be formed using a known material, for example, tantalum. (Ta), aluminum (Al), copper (Cu), and the like.
  • PECVD plasma oxidation chemical vapor deposition
  • LPCVD low pressure chemical vapor deposition
  • SiO 2 obtained by thermally oxidizing a polysilicon film.
  • the signal electrode line, the scanning electrode line, the common electrode line, the first drive electrode, and the second drive electrode of the TFT circuit 12 used in this embodiment can be formed using a known material, for example, tantalum. (Ta),
  • the interlayer insulating film 13 can be formed using a known material.
  • the material include silicon oxide (SiO 2 ), silicon nitride (SiN or Si 2 N 4 ), tantalum oxide (TaO, Alternatively, an inorganic material such as Ta 2 O 5 ), an organic material such as an acrylic resin or a resist material, or the like can be given.
  • Examples of the method for forming the interlayer insulating film 13 include dry processes such as chemical vapor deposition (CVD) and vacuum deposition, and wet processes such as spin coating. Moreover, it can also pattern by the photolithographic method etc. as needed.
  • CVD chemical vapor deposition
  • vacuum deposition vacuum deposition
  • wet processes such as spin coating.
  • it can also pattern by the photolithographic method etc. as needed.
  • the planarization film 14 has a defect in the organic EL element 40 (for example, a defect in the pixel electrode, a defect in the organic EL layer, a disconnection in the counter electrode, a short circuit between the pixel electrode and the counter electrode, a decrease in breakdown voltage due to unevenness on the surface of the TFT circuit 12 Etc.) and the like are provided.
  • the planarizing film 14 can be omitted.
  • the planarization film 14 can be formed using a known material, and examples thereof include inorganic materials such as silicon oxide, silicon nitride, and tantalum oxide, and organic materials such as polyimide resin, acrylic resin, and resist material.
  • examples of the method for forming the planarizing film 14 include a dry process such as a CVD method and a vacuum deposition method, and a wet process such as a spin coat method, but the present embodiment is not limited to these materials and the formation method.
  • the planarizing film 14 may have a single layer structure or a multilayer structure.
  • the partition 16 surrounds the periphery of the organic EL element 40 and is formed so as to partition each sub-pixel S.
  • the partition 16 is formed between at least the sub-pixels S on the one surface 11 a of the substrate 11, and prevents leakage between the first electrode 42 and the second electrode 43.
  • the partition wall 16 includes a first end surface 16a facing the substrate 11, a second end surface 16b facing the first end surface 16a and having an area smaller than the area of the first end surface 16a, and a side surface 16c. It has a forward tapered shape.
  • the “forward taper shape” refers to a taper shape whose cross-sectional shape becomes narrower in a direction away from the substrate 11.
  • the shape of the partition wall 16 is not limited to the forward taper shape, and may be an inverse taper shape in which the cross-sectional shape becomes thicker in the direction away from the substrate 11.
  • the width of the partition wall 16 that is, the length of the first end surface 16 a and the length of the second end surface 16 b of the partition wall 16 are equal in all the partition walls 16.
  • variety and area of the organic EL layer 41 are equal.
  • the partition wall 16 is formed of a white bank that takes into account the light extraction efficiency from the organic EL element 40. Thereby, the luminance is improved.
  • the partition 16 can be formed using an insulating material by a known method such as an electron beam (EB) vapor deposition method, a sputtering method, an ion plating method, or a resistance heating vapor deposition method.
  • the partition wall 16 can be patterned by a known dry method or a wet photolithography method.
  • the formation method of the partition 16 is not limited to these formation methods.
  • the material constituting the partition wall 16 is not particularly limited, but a known material is used. For example, the same material as that of the planarizing film 14 can be used.
  • the partition wall 16 has a film thickness that can sufficiently secure the insulation between the first electrode 42 and the second electrode 43.
  • the film thickness of the partition wall 16 is preferably 100 nm to 2000 nm, for example.
  • the thickness of the partition wall 16 is less than 100 nm, the insulating property is not sufficient, and leakage occurs between the first electrode 42 and the second electrode 43, resulting in an increase in power consumption and non-light emission.
  • the film thickness of the partition wall 16 exceeds 2000 nm, it takes time for the film forming process, and there is a concern that the productivity is deteriorated.
  • the partition wall 16 is preferably made of a light-reflective material or a light-scattering material in its entirety or on the surface (first end surface 16a, second end surface 16b, side surface 16c).
  • the light reflective material or the light scattering material is not particularly limited, and examples thereof include a reflective film made of metal such as gold, silver, and aluminum, and a scattering film made of titanium oxide.
  • the material of the partition wall 16 include an inorganic material such as silicon oxide (SiO 2 ), silicon nitride (SiN or Si 2 N 4 ), tantalum oxide (TaO or Ta 2 O 5 ), or an acrylic resin. And organic materials such as resist materials, metals such as gold, silver, and aluminum.
  • the partition 16 itself is not reflective, it is possible to reflect light emitted from the organic EL element 40 in a desired direction by forming a reflective film made of metal on the partition 16.
  • the method for forming a reflective film made of metal on the partition 16 include a dry process such as a chemical vapor deposition (CVD) method and a vacuum deposition method, and a wet process such as a spin coating method.
  • CVD chemical vapor deposition
  • a wet process such as a spin coating method.
  • a patterning method of the partition wall 16 a conventional photolithography method or the like can be given.
  • a thin film made of a light reflecting material or a light scattering material is provided on the surface of the partition wall 16.
  • a method of forming a thin film made of a light-reflective material or a light-scattering material on the surface of the partition wall 16 the above-described light-reflective material or light-scattering material is used.
  • CVD chemical vapor deposition
  • dry process such as vacuum deposition
  • wet process such as spin coating.
  • the whole or the surface of the partition wall 16 (first end surface 16a, second end surface 16b, side surface 16c) is made of a light absorbing material.
  • a thin film made of a light absorbing material is provided on the surface of the partition 16.
  • a method of forming a thin film made of a light-absorbing material on the surface of the partition wall 16 the above-described light-absorbing material is used.
  • a dry process such as a chemical vapor deposition (CVD) method or a vacuum deposition method
  • spin Examples include a wet process such as a coating method.
  • the partition wall 16 has a film thickness that can sufficiently secure the insulation between the first electrode 42 and the second electrode 43.
  • the film thickness of the partition wall 16 is preferably 100 nm to 2000 nm, for example.
  • the thickness of the partition wall 16 is less than 100 nm, the insulating property is not sufficient, and leakage occurs between the first electrode 42 and the second electrode 43, resulting in an increase in power consumption and non-light emission.
  • the film thickness of the partition wall 16 exceeds 2000 nm, it takes time for the film forming process, and there is a concern that the productivity deteriorates.
  • the organic EL element 40 includes a first electrode 42, an organic EL layer 41, and a second electrode 43.
  • the first electrode 42 and the second electrode 43 function as a pair as an anode or a cathode of the organic EL element 40. 1A, 1B, and the following description, the case where the first electrode 42 is an anode and the second electrode 43 is a cathode will be described as an example.
  • the first electrode 42 and the second electrode 43 can be formed using a conventional electrode material.
  • the first electrode 42 includes a low work function metal such as Ca / Al, Ce / Al, Cs / Al, Ba / Al, and a stable metal. It is preferable to form by laminating.
  • the first electrode 11 may be formed of an alloy containing a metal having a low work function, such as a Ca: Al alloy, Mg: Ag alloy, or Li: Al alloy, or LiF / Al or LiF / Ca / Al. , BaF 2 / Ba / Al, LiF / Al / Ag and other thin film insulating layers and metal electrodes may be combined.
  • a transparent electrode can be formed using ITO, IDIXO, IZO, GZO, SnO 2 or the like.
  • a translucent electrode it is preferable to use a translucent electrode as the second electrode 43.
  • the second electrode 43 may be a combination of a metal translucent electrode and a transparent electrode material.
  • a material for the semitransparent electrode silver is preferable from the viewpoint of reflectance and transmittance.
  • the film thickness of the semitransparent electrode is preferably 5 nm to 30 nm. When the film thickness of the translucent electrode is less than 5 nm, the light cannot be sufficiently reflected, and the interference effect cannot be obtained sufficiently. Further, when the film thickness of the semi-transparent electrode exceeds 30 nm, the light transmittance is drastically lowered, so that the luminance and light emission efficiency of the organic EL element 40 may be lowered.
  • the organic EL layer 41 is disposed between the first electrode 42 and the second electrode 43 and emits light when a voltage is applied.
  • the organic EL layer 41 includes, in order from the first electrode 42 side, a hole injection layer 44, a hole transport layer 45, an electron blocking layer 46, a light emitting layer 47, an electron transport layer 48, an electron An injection layer 49 is provided (hole injection layer / hole transport layer / electron blocking layer / light emitting layer / electron transport layer / electron injection layer).
  • the light emitting layer 47 of this embodiment has a single layer structure that emits light in the ultraviolet wavelength region to the blue-green wavelength region.
  • the light emission of the organic EL layer 41 is directed in the front direction (light extraction direction) due to the interference effect between the first electrode 42 and the second electrode 43. It can be condensed. In that case, since the directivity can be given to the light emission of the organic EL layer 41, the light emission loss escaping to the surroundings can be reduced, and the light emission efficiency can be increased. Thereby, the light-emitting energy generated in the organic EL layer 41 can be emitted more efficiently to the wavelength conversion layer 25 side, and consequently the front luminance of the organic EL element 40 can be increased.
  • the microresonator structure constituted by the first electrode 42 and the second electrode 43, it is possible to adjust the emission spectrum of the organic EL layer 41, and to adjust to the desired emission peak wavelength and half width. Can do. Thereby, the emission spectrum of the organic EL layer 41 can be controlled to a spectrum that can effectively excite the organic fluorescent dye in the wavelength conversion layer 25.
  • the first electrode 42 and the second electrode 43 can be formed by using a dry process such as an evaporation method, an EB method, an MBE method, or a sputtering method, or a wet method such as a spin coating method, a printing method, or an inkjet method.
  • a dry process such as an evaporation method, an EB method, an MBE method, or a sputtering method
  • a wet method such as a spin coating method, a printing method, or an inkjet method.
  • a process can also be used.
  • the hole injection layer 44 is provided in order to efficiently receive holes from the first electrode 42 and efficiently transfer them to the hole transport layer 45.
  • the HOMO level of the material used for the hole injection layer 44 is preferably lower than the HOMO level used for the hole transport layer 45 and higher than the work function of the first electrode 42.
  • the hole injection layer 44 may be a single layer or a multilayer.
  • a material generally used for an organic EL element or an organic photoconductor can be used.
  • inorganic p-type semiconductor materials porphyrin compounds, N, N′-bis- (3-methylphenyl) -N, N′-bis- (phenyl) -benzidine (TPD), N, N′-di (naphthalene) -1-yl) -N, N′-diphenyl-benzidine (NPD) and other aromatic tertiary amine compounds, hydrazone compounds, quinacridone compounds, styrylamine compounds and other low molecular materials, polyaniline (PANI), 3, 4 -Polymer materials such as polyethylene dioxythiophene / polystyrene sulfonate (PEDT / PSS), poly [triphenylamine derivative] (Poly-TPD), polyvinyl carbazole (PVCz), poly (p-phenylene vinylene) precursor ( Prepoly
  • the hole transport layer 45 is provided in order to efficiently receive holes from the hole injection layer 44 and deliver them efficiently to the light emitting layer 47.
  • the HOMO level of the material used for the hole transport layer 45 is preferably higher than the HOMO level of the hole injection layer 44 and lower than the HOMO level of the light emitting layer 47. This is because holes can be injected and transported to the light emitting layer 47 more efficiently, and the effect of reducing the voltage required for light emission and the effect of improving the light emission efficiency can be obtained.
  • the LUMO level of the hole transport layer 45 is preferably lower than the LUMO level of the light emitting layer 47 so that the leakage of electrons from the light emitting layer 47 can be suppressed. If it does so, the luminous efficiency in the light emitting layer 47 can be improved.
  • the band gap of the hole transport layer 45 is preferably larger than the band gap of the light emitting layer 47. Then, excitons can be effectively confined in the light emitting layer 47.
  • the hole transport layer 45 may be a single layer or a multilayer, and can be formed in the same manner as the hole injection layer 44 using a dry process or a wet process.
  • the electron blocking layer 46 can be formed using the same material as the hole injection layer 44. However, the absolute value of the LUMO level of the material is preferably smaller than the absolute value of the LUMO level of the material of the hole injection layer 44 included in the light emitting layer 47 in contact with the electron blocking layer 46. This is because electrons can be more effectively confined in the light emitting layer 47.
  • the electron blocking layer 46 may be a single layer or a multilayer, and can be formed in the same manner as the hole injection layer 44 using a dry process or a wet process.
  • the light emitting layer 47 may be composed only of the organic light emitting material exemplified below, or may be composed of a combination of a light emitting dopant and a host material, and optionally includes a hole transport material, an electron transport material, and an additive. An agent (donor, acceptor, etc.) may be included. Moreover, the structure by which these each material was disperse
  • polycarbonate or polyester can be used as the adhesive resin.
  • the solvent only needs to dissolve or disperse the material.
  • pure water, methanol, ethanol, THF, chloroform, xylene, trimethylbenzene, or the like can be used as the solvent.
  • the organic light emitting material a known light emitting material for an organic EL element can be used. Such light-emitting materials are classified into low-molecular light-emitting materials, polymer light-emitting materials, and the like. Specific examples of these compounds are given below, but the present embodiment is not limited to these materials.
  • the organic light emitting material may be classified into a fluorescent material, a phosphorescent material, and the like. From the viewpoint of reducing power consumption, it is preferable to use a phosphorescent material with high emission efficiency.
  • aromatic dimethylidene compounds such as 4,4′-bis (2,2′-diphenylvinyl) -biphenyl (DPVBi); 5-methyl- Oxadiazole compounds such as 2- [2- [4- (5-methyl-2-benzoxazolyl) phenyl] vinyl] benzoxazole; 3- (4-biphenyl) -4-phenyl-5-t-butyl Triazole derivatives such as phenyl-1,2,4-triazole (TAZ); styrylbenzene compounds such as 1,4-bis (2-methylstyryl) benzene; thiopyrazine dioxide derivatives, benzoquinone derivatives, naphthoquinone derivatives, anthraquinone derivatives, Fluorescent organic materials such as diphenoquinone derivatives and fluorenone derivatives; azomethine zinc complexes, (8
  • Polymer light emitting materials used for the light emitting layer 47 include poly (2-decyloxy-1,4-phenylene) (DO-PPP), poly [2,5-bis- [2- (N, N, N-triethyl). Ammonium) ethoxy] -1,4-phenyl-alt-1,4-phenyllene] dibromide (PPP-NEt3 +), poly [2- (2′-ethylhexyloxy) -5-methoxy-1,4-phenylenevinylene ] (MEH-PPV), poly [5-methoxy- (2-propanoxysulfonide) -1,4-phenylenevinylene] (MPS-PPV), poly [2,5-bis- (hexyloxy) -1 , 4-phenylene- (1-cyanovinylene)] (CN-PPV) and the like; poly (9,9-dioctylfluorene) (PDAF) and the like Pyro derivatives; poly (N
  • the organic light emitting material is preferably a low molecular light emitting material, and from the viewpoint of reducing power consumption, it is preferable to use a phosphorescent material having high light emission efficiency.
  • a well-known dopant for organic EL elements can be used.
  • examples of such a dopant include p-quaterphenyl, 3,5,3,5-tetra-tert-butylsecphenyl, 3,5,3,5-tetra-tert-butyl-p for ultraviolet light-emitting materials.
  • -Fluorescent materials such as quinckphenyl.
  • a fluorescent light-emitting material such as a styryl derivative; bis [(4,6-difluorophenyl) -pyridinato-N, C2 ′] picolinate iridium (III) (FIrpic), bis (4 ′, 6
  • Examples include phosphorescent organic metal complexes such as' -difluorophenylpolydinato) tetrakis (1-pyrazoyl) borate iridium (III) (FIr 6 ).
  • the green light emitting material include phosphorescent organic metal complexes such as tris (2-phenylpyridinate) iridium (Ir (ppy) 3 ).
  • the thickness of the light emitting layer 47 is preferably 5 nm to 500 nm.
  • Examples of the material of the electron transport layer 48 include n-type semiconductor inorganic materials, oxadiazole derivatives, triazole derivatives, thiopyrazine dioxide derivatives, benzoquinone derivatives, naphthoquinone derivatives, anthraquinone derivatives, diphenoquinone derivatives, fluorenone derivatives, and the like.
  • Molecular materials; polymer materials such as poly (oxadiazole) (Poly-OXZ) and polystyrene derivatives (PSS) can be used.
  • the electron injection layer 49 is provided to efficiently receive electrons from the second electrode 43 and efficiently transfer them to the electron transport layer 48.
  • Examples of the material of the electron injection layer 49 include fluorides such as lithium fluoride (LiF) and barium fluoride (BaF 2 ), and oxides such as lithium oxide (Li 2 O).
  • the material used for the electron injection layer 49 preferably has a higher LUMO level than the material used for the electron transport layer 48.
  • the material used for the electron transport layer 48 is preferably a material having a higher electron mobility than the material used for the electron injection layer 49.
  • the structure of the organic EL layer 41 is not limited to this, and can be appropriately set as necessary.
  • hole transport layer / light emitting layer / electron transport layer configuration hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer configuration, hole injection layer / hole transport layer / An electron blocking layer / light emitting layer / hole blocking layer / electron injection layer can also be used.
  • each layer constituting the organic EL layer 41 includes a dry process such as a vacuum evaporation method, and a wet process such as a doctor blade method, a dip coating method, a micro gravure method, a spray method, an ink jet method, and a printing method. Can be used.
  • the treatment is preferably performed in an inert gas atmosphere or in a vacuum condition.
  • it is preferable to perform a drying process by heating or the like in order to remove the solvent. In that case, it is preferable to perform a drying process in inert gas atmosphere, and it is more preferable to carry out under reduced pressure.
  • the sealing layer 17 seals the plurality of organic EL elements 40 provided on the one surface 11 a of the substrate 11.
  • the sealing layer 17 is formed so as to cover the surfaces of the partition wall 16 and the organic EL element 40 partitioned by the partition wall 16.
  • Examples of the method for forming the sealing layer 17 include an EB vapor deposition method, a sputtering method, an ion plating method, and a resistance heating vapor deposition method.
  • a material of the sealing layer 17 if it is an organic substance, a phthalocyanine etc. will be mentioned, and if it is an inorganic substance, SiON, SiO, SiN etc. will be mentioned.
  • the wavelength conversion substrate 20 includes a transparent substrate 21, a grid-like black matrix 22 provided on one surface 21 a of the transparent substrate 21, a partition wall 23 provided on the black matrix 22, and one surface of the transparent substrate 21. 21a, the color filter layer 24, the wavelength conversion layer 25, and the scattering layer 26 provided in a plurality of regions partitioned by the partition wall 23 are included.
  • substrate which has the light transmittance used with the conventional organic EL light-emitting device is used.
  • the material of the transparent substrate 21 include a transparent inorganic glass substrate, various transparent plastic substrates, and various transparent films.
  • the black matrix 22 is formed between the sub-pixels S. Of the one surface 21a of the transparent substrate 21, the black pixel portion S (R), the green pixel portion S (G), and the blue pixel portion S ( Formed during (B).
  • a material containing a colorant such as carbon black for blackening in an acrylic resin, a black matrix material for liquid crystal, or the like is used.
  • the partition wall 23 is formed between the sub-pixels S, and the red pixel portion S (R), the green pixel portion S (G), and the blue pixel portion S (B) of the one surface 21a of the transparent substrate 21. ).
  • the partition wall 23 includes a first end surface 23a facing the transparent substrate 21, a second end surface 23b facing the first end surface 23a and having an area smaller than the area of the first end surface 23a, a side surface 23c, It has a forward taper shape with
  • the “forward taper shape” refers to a taper shape whose cross-sectional shape becomes narrower in a direction away from the transparent substrate 21.
  • the shape of the partition wall 23 is not limited to the forward taper shape, and may be an inverse taper shape in which the cross-sectional shape becomes thicker in the direction away from the transparent substrate 21. Further, the width of the partition wall 23, that is, the length of the first end surface 23a and the length of the second end surface 23b of the partition wall 23 are equal in all the partition walls 23. Thereby, on one surface 21a side of the transparent substrate 21, the red pixel portion S (R), the green pixel portion S (G), and the blue pixel portion S (B) have the same width and area.
  • the light output portion corresponding to the red pixel portion S (R) is the light output corresponding to the first light output portion 51 and the green pixel portion S (G).
  • the second light output unit 52 and the third light output unit 53 corresponding to the blue pixel portion S (B) have the same width and area.
  • the partition wall 23 is preferably made of a light-reflective material or a light-scattering material in its entirety or on the surface (first end surface 23a, second end surface 23b, side surface 23c).
  • the same material as the partition wall 16 is used.
  • a metal as the material of the partition wall 23
  • the partition wall 23 itself is not reflective, it is possible to reflect light emitted from the phosphor contained in the wavelength conversion layer 25 in a desired direction by forming a reflective film made of metal on the partition wall 23.
  • a thin film made of a light reflective material or a light scattering material is provided on the surface of the partition wall 23.
  • a method of forming a thin film made of a light-reflective material or a light-scattering material on the surface of the partition wall 23 the above-described light-reflective material or light-scattering material is used. Examples thereof include dry processes such as (CVD) method and vacuum deposition method, and wet processes such as spin coating method.
  • the partition wall 23 is preferably made of a light-absorbing material in its entirety or on the surface (first end surface 23a, second end surface 23b, side surface 23c).
  • the same material as the partition wall 16 is used.
  • a thin film made of a light absorbing material is provided on the surface of the partition wall 23.
  • a method of forming a thin film made of a light-absorbing material on the surface of the partition wall 23 is used.
  • a dry process such as chemical vapor deposition (CVD) or vacuum deposition
  • spin Examples include a wet process such as a coating method.
  • the color filter layer 24 obtains light emission of a specific wavelength and has a function of reducing light of other wavelengths.
  • the color filter layer 24 includes a red color filter 24R, a green color filter 24G, and a blue color filter 24B formed on one surface 21a of the transparent substrate 21.
  • the red color filter 24R sets the red pixel portion S (R)
  • the green color filter 24G sets the green pixel portion S (G)
  • the blue color filter 24B sets the blue pixel portion S (B).
  • the color filter layer 24 in the present embodiment has a refractive index lower than that of the wavelength conversion layer 25.
  • the wavelength conversion layer 25 has a function of absorbing incident light and emitting light in different wavelength ranges. Specifically, the wavelength conversion layer 25 absorbs a part of incident light (light emitted from the plurality of organic EL elements 40 mounted on the substrate 11), performs wavelength distribution conversion, and does not absorb incident light. This is a layer for emitting light including minute and converted light (light having a wavelength distribution different from that of incident light).
  • the wavelength conversion layer 25 is a layer made of at least one fluorescent dye.
  • the wavelength conversion layer 25 emits light including the output wavelength distribution output from the first light output unit 51 and the second light output unit 52. It is a yellow phosphor layer composed of a material to be output.
  • the wavelength conversion layer 25 is selected at a position corresponding to the red pixel portion S (R) and the green pixel portion S (G) among the sub-pixels partitioned by the partition wall 23 on the transparent substrate 21. Are provided separately.
  • the wavelength conversion layer 25 is a position corresponding to the red pixel portion S (R), and is laminated on the surface of the red color filter 24R.
  • the wavelength conversion layer 25 is a position corresponding to the green pixel portion S (G) and is laminated on the surface of the green color filter 24G. As shown in FIG. 1C, the wavelength conversion layer 25 may also be provided on the second end face 23b of the partition wall 23 that partitions the red pixel portion S (R) and the green pixel portion S (G). That is, the wavelength conversion layer 25 constituting the red pixel portion S (R) and the wavelength conversion layer 25 constituting the green pixel portion S (G) are connected.
  • the color conversion dye one or more fluorescent dyes (yellow phosphors) that emit fluorescence in the yellow region are used.
  • fluorescent dyes that absorb light in the ultraviolet wavelength region to blue-green wavelength region and emit fluorescence in the yellow region include, for example, perylene dyes: Lumogen Red, Lumo Gen yellow, rumogen orange, other body pi dyes, squaraine dyes, and the like. Furthermore, various dyes (direct dyes, acid dyes, basic dyes, disperse dyes, etc.) can be used if they are fluorescent.
  • the organic fluorescent dye used in the present embodiment includes polymethacrylate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer resin, alkyd resin, aromatic sulfonamide resin, urea resin, melamine resin, benzoguanamine resin, and these. It is good also as an organic fluorescent pigment by knead
  • organic fluorescent dyes and organic fluorescent pigments (hereinafter, organic fluorescent dyes and organic fluorescent pigments are collectively referred to as organic fluorescent dyes). ) May be used alone or in combination of two or more in order to adjust the hue of fluorescence.
  • the organic fluorescent dye used in the present embodiment is preferably contained in an amount of 0.01% by mass to 5% by mass, more preferably 0.1% by mass, based on the mass of the wavelength conversion layer 25 with respect to the wavelength conversion layer 25. % To 2% by mass. If the content of the organic fluorescent dye is less than 0.01% by mass with respect to the mass of the wavelength conversion layer 25, sufficient wavelength conversion cannot be performed. Moreover, when content of an organic fluorescent pigment exceeds 5 mass% with respect to the mass of the wavelength conversion layer 25, wavelength conversion efficiency will fall by effects, such as density
  • a photocurable or photothermal combined type curable resin is subjected to at least one of light treatment and heat treatment, and radical species or ion species. Is generated, polymerized or crosslinked to be insoluble and infusible.
  • the material of the wavelength conversion layer 25 necessary for patterning it is desirable that the material has a photocurable or photothermal combination type curable resin and is soluble in an organic solvent or an alkaline solution in an unexposed state.
  • the photocurable or photothermal combination type curable resin comprises (1) a composition comprising an acrylic polyfunctional monomer and oligomer having a plurality of acryloyl groups and methacryloyl groups, and photo or thermal polymerization initiator, (2 ) A composition comprising a polyvinylcinnamic acid ester and a sensitizer, (3) a composition comprising a linear or cyclic olefin and bisazide, and (4) a composition comprising a monomer having an epoxy group and an acid generator. Etc.
  • the composition comprising the acrylic polyfunctional monomer and oligomer (1) and a photo or thermal polymerization initiator is capable of high-definition patterning and has high reliability such as solvent resistance and heat resistance. Therefore, it is preferable.
  • the matrix resin is formed by allowing at least one of light and heat to act on the photocurable or photothermal combination type curable resin.
  • the photopolymerization initiator, sensitizer, and acid generator that can be used in the present embodiment are preferably those that initiate polymerization by light having a wavelength that is not absorbed by the fluorescent conversion dye contained therein.
  • a photopolymerization initiator and a thermal polymerization initiator are added. It is also possible not to.
  • another example of the matrix resin may be a so-called positive type photosensitive resin in which the light irradiation part is soluble.
  • the film thickness of the wavelength conversion layer 25 is preferably 100 nm to 100 ⁇ m, and more preferably 1 ⁇ m to 100 ⁇ m. Since the wavelength conversion layer 25 has a film thickness of 100 nm or more, it can sufficiently absorb the excitation light from the organic EL element 40 (light from the ultraviolet wavelength region to the blue-green wavelength region). Luminous efficiency is improved. Further, the absorption of light from the ultraviolet wavelength region to the blue-green wavelength region from the organic EL element 40 is enhanced, and the red pixel portion S (R) and the green pixel portion S (G) are not adversely affected by the color purity. In order to reduce blue transmitted light, the film thickness of the wavelength conversion layer 25 is preferably 1 ⁇ m or more.
  • the film thickness of the wavelength conversion layer 25 is preferably 100 ⁇ m or less from the viewpoint that the material cost can be reduced.
  • the scattering layer 26 transmits light from the ultraviolet wavelength region to the blue-green wavelength region incident from the one surface 21a side of the transparent substrate 21 without changing the spectral shape to the other surface 21b side of the transparent substrate 21. It is a scattering layer.
  • the scattering layer 26 is a scattering layer that does not contain a fluorescent dye.
  • the scattering layer 26 is composed of a binder resin and transparent particles dispersed in the binder resin.
  • the film thickness of the scattering layer 26 is preferably 1 ⁇ m to 100 ⁇ m, and more preferably 2 ⁇ m to 50 ⁇ m.
  • the binder resin constituting the scattering layer 26 is not particularly limited.
  • a known resin is used, and a light-transmitting one is preferable.
  • the transparent particles are not particularly limited as long as they can scatter or transmit light from the organic EL element 40, and examples thereof include polystyrene particles having an average particle diameter of 25 ⁇ m and a standard deviation of particle size distribution of 1 ⁇ m. It is done.
  • the content of the transparent particles in the scattering layer 26 is not particularly limited, and is appropriately adjusted according to the target viewing angle and the like.
  • the method for forming the scattering layer 26 is not particularly limited, and a known method is used.
  • a method for forming the scattering layer 26 for example, a spin coating method, a dipping method, a doctor blade method, a discharge coating method using a scattering layer forming composition in which a binder resin and transparent particles are dissolved or dispersed in a solvent.
  • a known wet process such as a coating method such as a spray coating method, or a printing method such as an ink jet method, a relief printing method, an intaglio printing method, a screen printing method, or a micro gravure coating method.
  • auxiliary electrode (auxiliary wiring) made of metal (not shown) is provided between the transparent substrate 21 and the partition wall 23. Further, a feeding point for connecting the auxiliary electrode to an external power source (not shown) is provided on the first end face 23 a of the partition wall 23.
  • the auxiliary electrode can be formed using a known material, and examples thereof include Cu, Ag, Au, Pt, Al, Cr, Co, and Mo.
  • the feeding point can be formed using a known material, and examples of the material include silver paste and carbon paste.
  • the organic EL element is arranged such that the partition 16 of the organic EL element substrate 10 and the partition 23 of the wavelength conversion substrate 20 are connected (contacted) or face each other.
  • the substrate 10 and the wavelength conversion substrate 20 are arranged to face each other.
  • the organic EL element substrate 10 and the wavelength conversion substrate 20 are bonded together via a seal member (not shown) disposed along the peripheral edge of one of the organic EL element substrate 10 and the wavelength conversion substrate 20. .
  • the filling layer 30 is provided between the organic EL element substrate 10 and the wavelength conversion substrate 20 and in a space surrounded by the seal member.
  • the filling layer 30 is made of a transparent medium.
  • As the transparent medium air, an inert gas such as nitrogen gas or argon gas, and a high refractive index resin material are used.
  • electroconductive fillers such as an ionic liquid
  • the cation constituting the ionic liquid include a tetraalkylammonium ion, a tetraalkylphosphonium ion, a dialkylpiperidinium ion, a dialkylimidazolium ion, a trialkylimidazolium ion, a trialkylsulfonium ion, and an alkylpyridinium ion.
  • anion constituting the ionic liquid examples include hexafluorophosphate ion, tetrafluoroborate ion, methanesulfonate ion, chloride ion, bromide ion, acetate ion, trifluoroacid ion, thiocyanate ion, dicyanamide.
  • Ion bis (trifluoromethanesulfonyl) imide ion, dibutyl phosphate ion and the like.
  • the ionic liquid When an ionic liquid is used as the transparent conductive filler, the ionic liquid preferably has a melting point of room temperature or lower, and is a liquid having a low viscosity near room temperature.
  • the high refractive index filler forming the filling layer 30 a material having a refractive index of 1.5 to 1.9 is used.
  • the filler having a refractive index of 1.5 to 1.9 include UV curable resin, thermosetting resin, fluorinated inert liquid, fluorinated oil, SiO x , SiO x N y , AlN x , and SiAlO. x N y, inorganic materials such as TiO x and the like.
  • An example of the UV curable resin is an acrylic resin.
  • the thermosetting resin include silicone resins.
  • the filler may be applied or dispersed on the organic EL element substrate 10 or the wavelength conversion substrate 20 before bonding the organic EL element substrate 10 and the wavelength conversion substrate 20, or after the two substrates are bonded,
  • the gap between the two substrates may be filled through an injection port provided in the seal member 31.
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength range to the blue-green wavelength range.
  • the blue pixel portion S (B) light emitted from the organic EL element 40 passes through the blue color filter 24B, thereby reducing green light emission and obtaining blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the green color filter 24G. Of the emitted light, light having a wavelength close to red is reduced to obtain green light emission.
  • the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the red color filter 24R.
  • the emitted light light having a wavelength close to green is reduced to obtain red light emission.
  • the wavelength conversion layer 25 corresponding to the red pixel portion S (R) and the green pixel portion S (G) is formed of the same material.
  • the manufacturing process can be simplified, and patterning with higher definition becomes easier.
  • a binder resin in which a dye or pigment corresponding to each color is dissolved or dispersed is applied between the partition walls 23, and the binder resin is cured to form the color filter layer 24.
  • Red color filter 24R, green color filter 24G, blue color filter 24B are formed.
  • a binder resin in which transparent particles are dissolved or dispersed is applied onto the blue color filter 24B formed on the one surface 21a of the transparent substrate 21, and the binder resin is cured to form the scattering layer 26.
  • a photosensitive resin 60 containing a yellow phosphor is applied on the red color filter 24R, the green color filter 24G, the scattering layer 26, and the partition wall 23 formed on the one surface 21a of the transparent substrate 21.
  • the photosensitive resin 60 a positive photosensitive resin that is soluble by light irradiation is used.
  • the photosensitive resin 60 is applied on all of the red color filter 24R, the green color filter 24G, the scattering layer 26, and the partition wall 23.
  • the method for applying the photosensitive resin 60 include a known wet process, a known dry process, and a laser transfer method.
  • Known wet processes include spin coating methods, dipping methods, doctor blade methods, discharge coating methods, spray coating methods, and the like.
  • Known dry processes include resistance heating vapor deposition, electron beam (EB) vapor deposition, molecular beam epitaxy (MBE), sputtering, and organic vapor deposition (OVPD).
  • the positive photosensitive resin constituting the positive photosensitive resin 60 a conventionally known positive photosensitive resist can be used.
  • the positive photosensitive resist for example, an acrylic transparent positive resist, an NPAR series manufactured by Nissan Chemical Co., a PIF series manufactured by JNC, and the like. If it is a siloxane-based positive material, Photoclear manufactured by Toray Industries, Inc., and Zeocoat manufactured by Nippon Zeon Co., Ltd. can be cited as cycloolefin-based positive materials.
  • the positive photosensitive resist contains (A) a soluble resin, (B) a photoacid generator, and (C) an organic solvent.
  • the positive photosensitive resist may contain a conventionally known photosensitizer as necessary in accordance with the wavelength of light to be irradiated. Specifically, as the photosensitizer, for example, it is excited by absorbing light (visible light) in a wavelength region of 400 to 700 nm, and interacts with (A) a soluble resin and (B) a photoacid generator.
  • These photosensitizers may be used alone or in combination of two or more.
  • the “interaction” here includes energy transfer, electron transfer, and the like from the excited photosensitizer to other components.
  • Examples of the (A) soluble resin include (A1) an alkali-soluble resin and (A2) a resin that is modified to be alkali-soluble in the presence of an acid.
  • Examples of (A1) alkali-soluble resins include phenol novolac resins, acrylic resins, styrene-acrylic acid copolymers, hydroxystyrene copolymers, polyvinylphenol, poly ⁇ -methylvinylphenol, and the like. Is preferred.
  • Examples of the resin that is modified to be alkali-soluble in the presence of an acid include resins such as polyvinylphenol having a hydroxyl group protected with a protecting group, and a styrene-maleimide copolymer.
  • a quinonediazide group containing compound etc. examples include sulfonic acid of quinonediazides such as orthobenzoquinonediazide, orthonaphthoquinonediazide, orthoanthraquinonediazide, and the like, polyhydroxybenzophenone of a compound containing a phenolic hydroxyl group or an amino group, gallic acid alkylphenol resin, dimethylphenol, Hydroquinone, polyhydroxydiphenylalkane, polyhydroxydiphenylalkene, bisphenol A, tris (hydroxyphenyl) methane and its methyl substitutes, naphthol, pyrocatechol, pyrogallol, aniline, p-aminodiphenylamine, part of p-aminodiphenylamine Or partially esterified, partially amidated p-aminodiphenylamine or Like those amidated in all thereof
  • the photosensitive resin 60 is exposed to light ⁇ through the mask 70 to expose the photosensitive resin 60.
  • the mask 70 is provided with a light transmission part (opening part) 70a only in a part facing the scattering layer 26 (blue color filter 24B). Thereby, only the photosensitive resin 60 coated on the scattering layer 26 is exposed.
  • the photosensitive resin 60 is developed, and the photosensitive resin 60 on the scattering layer 26 whose solubility has been increased by the above-described exposure is removed.
  • the photosensitive resin 60 remains connected to the red color filter 24R, the green color filter 24G, and the second end face 23b of the partition wall 23.
  • the remaining photosensitive resin 60 becomes the connected wavelength conversion layer 25 shown in FIG. 1C.
  • the mask 70 By changing the mask 70, the separated wavelength conversion layer 25 as shown in FIG. 1A can be formed. Thereby, the wavelength conversion board
  • the wavelength conversion layer 25 corresponding to the red pixel portion S (R) and the green pixel portion S (G) is formed of the same material.
  • R) It is possible to prevent a deviation from occurring in the alignment between the first light output unit 51 and the green pixel unit S (G) (first light output unit 51).
  • the photosensitive resin 60 since the photosensitive resin 60 should just be exposed once, it can prevent that the fluorescent pigment
  • FIG. 3 is a cross-sectional view showing a schematic configuration of an organic EL light emitting device according to the second embodiment of the present invention.
  • the same components as those of the organic EL light emitting device of the first embodiment shown in FIG. 1A are denoted by the same reference numerals, and the description thereof is omitted.
  • the organic EL light emitting device 200 of the present embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the first end surface 23a of the partition wall 23B is a red pixel. It is larger than the width of the partition wall 23A that partitions the portion S (R) and the green pixel portion S (G), that is, the length of the first end face 23a of the partition wall 23A. Further, the width of the partition wall 23C that partitions the blue pixel portion S (B) and the red pixel portion S (R), that is, the length of the first end surface 23a of the partition wall 23C is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23A partitioning S (G), that is, the length of the first end face 23a of the partition wall 23A is larger.
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the second end face 23b of the partition wall 23B is determined by the red pixel portion S (R) and the green pixel portion. It is larger than the width of the partition wall 23A partitioning S (G), that is, the length of the second end face 23b of the partition wall 23A.
  • the width of the partition wall 23C that divides the blue pixel portion S (B) and the red pixel portion S (R), that is, the length of the second end face 23b of the partition wall 23C is determined by the red pixel portion S (R) and the green pixel portion. It is larger than the width of the partition wall 23A partitioning S (G), that is, the length of the second end face 23b of the partition wall 23A. Thereby, it can prevent that the emitted light (blue light) from blue pixel part S (B) injects into red pixel part S (R) and green pixel part S (G).
  • FIG. 4 is a cross-sectional view showing a schematic configuration of an organic EL light emitting device according to the third embodiment of the present invention.
  • the same components as those of the organic EL light emitting device of the first embodiment shown in FIG. 1A are denoted by the same reference numerals, and the description thereof is omitted.
  • the organic EL light emitting device 300 of the present embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the organic EL light emitting device 300 of this embodiment in the wavelength conversion substrate 20, R (red), G (green), B (blue), and Y (yellow) subpixels S are provided on the surface 21 a side of the transparent substrate 21. A color filter layer 24 and a wavelength conversion layer 25 corresponding to the above are provided.
  • the organic EL light emitting device 300 of this embodiment has a plurality of pixels. Each pixel has four sub-pixels S (red pixel portion S (R), green pixel portion S corresponding to red light (R), green light (G), blue light (B), and yellow light (Y). (G), a blue pixel portion S (B), and a yellow pixel portion S (Y)).
  • the organic EL light emitting device 300 of the present embodiment includes light output units 51, 52, 53, and 54 having four different output wavelength distributions.
  • the light output unit corresponding to the red pixel unit S (R) is the first light output unit 51
  • the light output unit corresponding to the green pixel unit S (G) is the second light output unit.
  • the light output unit 52, the light output unit corresponding to the blue pixel unit S (B) is the third light output unit 53
  • the light output unit corresponding to the yellow pixel unit S (Y) is the fourth light output unit 54.
  • the red pixel portion S (R), the green pixel portion S (G), the blue pixel portion S (B), and the yellow pixel portion S (Y) are extended in a stripe shape along the y axis, and are red along the x axis.
  • the pixel portion S (R), the green pixel portion S (G), the blue pixel portion S (B), and the yellow pixel portion S (Y) are arranged in this order to form a two-dimensional stripe arrangement.
  • the color filter layer 24 includes a red color filter 24R, a green color filter 24G, a blue color filter 24B, and a yellow color filter 24Y formed on one surface 21a of the transparent substrate 21.
  • the red color filter 24R sets the red pixel portion S (R)
  • the green color filter 24G sets the green pixel portion S (G)
  • the blue color filter 24B sets the blue pixel portion S (B)
  • the yellow color is set by the filter 24Y.
  • the wavelength conversion layer 25 is a layer made of at least one kind of fluorescent dye, and is output from the first light output unit 51, the second light output unit 52, and the fourth light output unit 54 in this embodiment. This is a yellow phosphor layer made of a material that outputs light including an output wavelength distribution.
  • the wavelength conversion layer 25 is located at a position corresponding to the red pixel portion S (R), the green pixel portion S (G), and the yellow pixel portion S (Y) among the subpixels partitioned by the partition wall 23 on the transparent substrate 21. It is provided selectively.
  • the wavelength conversion layer 25 is a position corresponding to the red pixel portion S (R), and is laminated on the surface of the red color filter 24R.
  • the wavelength conversion layer 25 is a position corresponding to the green pixel portion S (G) and is laminated on the surface of the green color filter 24G. Moreover, the wavelength conversion layer 25 is a position corresponding to the yellow pixel portion S (Y), and is laminated on the surface of the yellow color filter 24Y. Furthermore, as shown in FIG. 4, the wavelength conversion layer 25 includes the red pixel portion S (R) on the second end surface 23b of the partition wall 23 that partitions the red pixel portion S (R) and the green pixel portion S (G). And the second end face 23b of the partition wall 23 that partitions the yellow pixel portion S (Y).
  • the wavelength conversion layer 25 constituting the red pixel portion S (R) and the wavelength conversion layer 25 constituting the green pixel portion S (G) are connected. Further, the wavelength conversion layer 25 constituting the red pixel portion S (R) and the wavelength conversion layer 25 constituting the yellow pixel portion S (Y) are connected.
  • the wavelength conversion material for forming the wavelength conversion layer 25 that emits yellow light is not particularly limited as long as it emits yellow secondary light having a light emission peak wavelength in the yellow region in the vicinity of 560 nm.
  • Perylene dyes such as Lumogen Yellow and Lumogen Orange, body pi dyes, squaraine dyes, and the like.
  • various dyes directly dyes, acid dyes, basic dyes, disperse dyes, etc. can be used as long as they are fluorescent.
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the first end face 23a of the partition wall 23B is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23C that partitions the blue pixel portion S (B) and the yellow pixel portion S (Y), that is, the length of the first end surface 23a of the partition wall 23C is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the second end face 23b of the partition wall 23B is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23A that partitions S (G), that is, the second end face 23b of the partition wall 23A, and the width of the partition wall 23D that partitions the red pixel portion S (R) and the yellow pixel portion S (Y), that is, the partition wall It is larger than the length of the second end face 23b of 23A.
  • the width of the partition wall 23C that divides the blue pixel portion S (B) and the yellow pixel portion S (Y), that is, the length of the second end face 23b of the partition wall 23C is the red pixel portion S (R) and the green pixel portion.
  • the organic EL light emitting device 300 of the present embodiment light from the ultraviolet wavelength region to the blue-green wavelength region emitted from the organic EL element 40 that is a light source enters the wavelength conversion layer 25 and the color filter layer 24.
  • light of four colors of red, green, blue, and yellow is emitted to the outside (observer side) of the wavelength conversion substrate 20.
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength range to the blue-green wavelength range.
  • the blue pixel portion S (B) light emitted from the organic EL element 40 passes through the blue color filter 24B, thereby reducing green light emission and obtaining blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the green color filter 24G. Of the emitted light, light having a wavelength close to red is reduced to obtain green light emission.
  • the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the red color filter 24R. Of the emitted light, light having a wavelength close to green is reduced to obtain red light emission.
  • the yellow pixel portion S (Y) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further, by transmitting through the yellow color filter 24Y, yellow light is emitted. It has gained.
  • FIG. 5 is a cross-sectional view showing a schematic configuration of an organic EL light emitting device according to the fourth embodiment of the present invention.
  • the organic EL light emitting device 400 of the present embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the organic EL light emitting device 400 of the present embodiment is different from the organic EL light emitting device 300 of the third embodiment in that the yellow color filter 24Y is not provided in the yellow pixel portion S (Y).
  • the color conversion dye constituting the wavelength conversion layer 25 one or more fluorescent dyes (red phosphors) that emit fluorescence in the red region and fluorescence that emits fluorescence in the green region are used.
  • One or more dyes (green phosphors) are used in combination.
  • fluorescent dyes that absorb light in the ultraviolet to blue-green wavelength range and emit fluorescence in the red region include, for example, rhodamine B, rhodamine 6G, and rhodamine 3B.
  • rhodamine dyes cyanine dyes, 1-ethyl-2- [4- (p-dimethylaminophenyl) -1,3-butadienyl] -Pyridine-based dyes such as pyridinium perchlorate (pyridine 1) or oxazine-based dyes.
  • various dyes direct dyes, acid dyes, basic dyes, disperse dyes, etc.
  • a fluorescent dye that absorbs light in the ultraviolet to blue-green wavelength region and emits fluorescence in the green region is, for example, 3- (2′-benzothiazolyl).
  • various dyes direct dyes, acid dyes, basic dyes, disperse dyes,
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength region to the blue-green wavelength region.
  • the blue pixel portion S (B) light emitted from the organic EL element 40 passes through the blue color filter 24B, thereby reducing green light emission and obtaining blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted into substantially green or substantially yellow by passing through the wavelength conversion layer 25, and further passed through the green color filter 24G. Of the light converted to green or substantially yellow, light having a wavelength close to blue is reduced to obtain green light emission.
  • the light from the organic EL element 40 is first converted into substantially red or substantially yellow by passing through the wavelength conversion layer 25, and further passed through the red color filter 24R so as to be substantially the same. Of the light converted to red or substantially yellow, light having a wavelength close to green is reduced to obtain red light emission.
  • the yellow pixel portion S (Y) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further, by transmitting through the yellow color filter 24Y, yellow light is emitted. It has gained.
  • FIG. 6 is a cross-sectional view showing a schematic configuration of an organic EL light emitting device according to the fifth embodiment of the present invention.
  • the organic EL light emitting device 500 of this embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the organic EL light emitting device 500 of the present embodiment in the wavelength conversion substrate 20, R (red), G (green), B (blue), and W (white) sub-pixels S are disposed on the surface 21 a side of the transparent substrate 21. A color filter layer 24 and a wavelength conversion layer 25 corresponding to the above are provided.
  • the organic EL light emitting device 500 of this embodiment has a plurality of pixels. Each pixel has four sub-pixels S (red pixel portion S (R), green pixel portion S corresponding to red light (R), green light (G), blue light (B), and white light (W), respectively. (G), a blue pixel portion S (B), and a white pixel portion S (W)).
  • the organic EL light emitting device 500 of the present embodiment includes light output units 51, 52, 53, and 55 having four different output wavelength distributions.
  • the light output unit corresponding to the red pixel unit S (R) is the first light output unit 51
  • the light output unit corresponding to the green pixel unit S (G) is the second light output unit.
  • the light output unit 52, the light output unit corresponding to the blue pixel unit S (B) is the third light output unit 53
  • the light output unit corresponding to the white pixel unit S (W) is the fourth light output unit 55.
  • the red pixel portion S (R), the green pixel portion S (G), the blue pixel portion S (B), and the white pixel portion S (W) are extended in a stripe shape along the y axis, and red along the x axis.
  • the pixel portion S (R), the green pixel portion S (G), the blue pixel portion S (B), and the white pixel portion S (W) are arranged in this order to form a two-dimensional stripe arrangement.
  • the color filter layer 24 has a red color filter 24R, a green color filter 24G, and a blue color filter 24B formed on one surface 21a of the transparent substrate 21.
  • the red color filter 24R sets the red pixel portion S (R)
  • the green color filter 24G sets the green pixel portion S (G)
  • the blue color filter 24B sets the blue pixel portion S (B).
  • the wavelength conversion layer 25 is a layer made of at least one kind of fluorescent dye, and is output from the first light output unit 51, the second light output unit 52, and the fourth light output unit 55 in this embodiment.
  • the white phosphor layer is made of a material that outputs light including an output wavelength distribution.
  • the wavelength conversion layer 25 is located at a position corresponding to the red pixel portion S (R), the green pixel portion S (G), and the white pixel portion S (W) among the sub-pixels partitioned by the partition wall 23 on the transparent substrate 21. It is provided selectively.
  • the wavelength conversion layer 25 is a position corresponding to the red pixel portion S (R), and is laminated on the surface of the red color filter 24R.
  • the wavelength conversion layer 25 is a position corresponding to the green pixel portion S (G) and is laminated on the surface of the green color filter 24G.
  • the wavelength conversion layer 25 is provided on the one surface 21a of the transparent substrate 21 at a position corresponding to the white pixel portion S (W).
  • the wavelength conversion layer 25 is also provided on the second end face 23b of the partition wall 23 that partitions the red pixel portion S (R) and the green pixel portion S (G). That is, the wavelength conversion layer 25 constituting the red pixel portion S (R) and the wavelength conversion layer 25 constituting the green pixel portion S (G) are connected.
  • a matrix resin and a part of light in a wavelength range from an ultraviolet wavelength range to a blue-green wavelength range are dispersed while being dispersed in the matrix resin.
  • a material containing a material that emits red light when excited by light having a wavelength included in light in the green wavelength range is used.
  • the organic EL element 40 a part of the light in the ultraviolet wavelength region to the blue-green wavelength region is transmitted, and the red light is excited by the light having the wavelength included in the light in the blue-green wavelength region.
  • Examples of materials that emit light include cyanine dyes such as 4-dicyanomethylene-2-methyl-6- (p-dimethylaminostyryl) -4H-pyran (DCM), DCM-2, and DCJTB; Pyridine dyes such as ethyl-2- [4- (p-dimethylaminophenyl) -1,3-butadienyl] -pyridinium-perchlorate (pyridine 1); rhodamine B, rhodamine 6G, rhodamine 3B, rhodamine 101, rhodamine 110 , Basic violet 11, sulforhodamine 101, basic violet 11, basic red 2, etc.
  • cyanine dyes such as 4-dicyanomethylene-2-methyl-6- (p-dimethylaminostyryl) -4H-pyran (DCM), DCM-2, and DCJTB
  • Pyridine dyes such as ethyl-2- [4- (p-dimethyla
  • xanthene series Elemental Perylene dyes such as Lumogen Orange, Lumogen Pink, Lumogen Red, Solvent Orange 55; 3- (benzothiazol-2-yl) -7- (diethylamino) -2-oxo-2H-1-benzopyran-4-carbonitrile Coumarin dyes such as: oxazine dyes; chrysene dyes; thioflavine dyes; pyrene dyes; anthracene dyes; acridone dyes; acridine dyes; fluorene dyes; terphenyl dyes; Hexatriene dyes; oxazole dyes; stilbene dyes; diphenylmethane dyes, triphenylmethane dyes; thiazole dyes; thiazine dyes; naphthalimide dyes; anthraquinone dyes, and other organic dyes. It is not limited to. Furthermore, as a material that emits red light, various dye
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the first end face 23a of the partition wall 23B is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23C that partitions the blue pixel portion S (B) and the white pixel portion S (W), that is, the length of the first end surface 23a of the partition wall 23C is the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23B that partitions the green pixel portion S (G) and the blue pixel portion S (B), that is, the length of the second end face 23b of the partition wall 23B is determined by the red pixel portion S (R) and the green pixel portion.
  • the width of the partition wall 23C that divides the blue pixel portion S (B) and the white pixel portion S (W), that is, the length of the second end face 23b of the partition wall 23C is the red pixel portion S (R) and the green pixel portion.
  • the organic EL light emitting device 500 of the present embodiment light from the ultraviolet wavelength region to the blue-green wavelength region emitted from the organic EL element 40 that is a light source is incident on the wavelength conversion layer 25 and the color filter layer 24. As a result, light of four colors of red, green, blue, and white is emitted to the outside (observer side) of the wavelength conversion substrate 20.
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength range to the blue-green wavelength range.
  • the blue pixel portion S (B) light emitted from the organic EL element 40 passes through the blue color filter 24B, thereby reducing green light emission and obtaining blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted to substantially white by transmitting through the wavelength conversion layer 25, and further converted to approximately white by transmitting through the green color filter 24G. Of the emitted light, light having a wavelength close to blue and red is reduced to obtain green light emission.
  • the light from the organic EL element 40 is first converted to substantially white by passing through the wavelength conversion layer 25, and further converted to substantially white by passing through the red color filter 24R. Of the emitted light, light having a wavelength close to blue and green is reduced to obtain red light emission.
  • the white pixel portion S (W) the light from the organic EL element 40 is first converted into substantially white color by passing through the wavelength conversion layer 25 to obtain white light emission.
  • FIG. 7 is a cross-sectional view showing a schematic configuration of an organic EL light emitting device according to the sixth embodiment of the present invention. 6, the same as the organic EL light emitting device of the first embodiment shown in FIG. 1A, the organic EL light emitting device of the third embodiment shown in FIG. 4, and the organic EL light emitting device of the fifth embodiment shown in FIG. The same reference numerals are given to the constituent elements and the description thereof is omitted.
  • the organic EL light emitting device 600 of the present embodiment includes an organic EL element substrate 10, a wavelength conversion substrate 20, and a filling layer provided between the organic EL element substrate 10 and the sealing substrate 20. 30 and is a top emission type organic EL light emitting device driven by an active driving method.
  • the wavelength conversion layer 25 is laminated on the surface of the blue color filter 24B at a position corresponding to the blue pixel portion S (B).
  • the organic EL light emitting device 600 of the present embodiment light from the ultraviolet wavelength region to the blue-green wavelength region emitted from the organic EL element 40 that is a light source is incident on the wavelength conversion layer 25 and the color filter layer 24. As a result, light of four colors of red, green, blue, and white is emitted to the outside (observer side) of the wavelength conversion substrate 20.
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength range to the blue-green wavelength range.
  • the blue pixel portion S (B) the light is first converted to substantially white by transmitting through the wavelength conversion layer 25, and further transmitted through the blue color filter 24B to obtain blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted into a substantially white color by passing through the wavelength conversion layer 25, and further transmitting green light by passing through the green color filter 24G. It has gained.
  • the light from the organic EL element 40 is first converted into substantially white by passing through the wavelength conversion layer 25, and further passing through the red color filter 24R to emit red light. It has gained.
  • the white pixel portion S (W) the light from the organic EL element 40 is first converted into substantially white color by passing through the wavelength conversion layer 25 to obtain white light emission.
  • FIG. 8 is a cross-sectional view illustrating a schematic configuration of an organic EL light emitting device according to a seventh embodiment of the present invention.
  • an organic EL light emitting device 700 of this embodiment includes an organic EL element substrate 800 and a wavelength conversion substrate 20, and is a bottom emission type organic EL light emitting device driven by a passive matrix driving method. It is.
  • the organic EL element substrate 800 mainly includes an organic EL element (organic light emitting element) 40. As shown in FIG. 8, the organic EL element 40 includes an organic EL layer 41 sandwiched between a first electrode 42 and a second electrode 43. A protective layer 810 is provided on the surface of the first electrode 42 opposite to the organic EL layer 41.
  • organic EL element organic light emitting element
  • the wavelength conversion substrate 20 is provided with a planarization layer 820 so as to cover the wavelength conversion layer 25, the scattering layer 26 and the partition wall 23.
  • the organic EL element substrate 800 and the wavelength conversion substrate 20 are laminated via a protective layer 810 and a planarization layer 820.
  • light emission (excitation light) from the organic EL element 40 is light in the ultraviolet wavelength range to the blue-green wavelength range.
  • the blue pixel portion S (B) light emitted from the organic EL element 40 passes through the blue color filter 24B, thereby reducing green light emission and obtaining blue light emission with high color purity.
  • the green pixel portion S (G) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the green color filter 24G. Of the emitted light, light having a wavelength close to red is reduced to obtain green light emission.
  • the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further converted to approximately yellow by transmitting through the red color filter 24R. Of the emitted light, light having a wavelength close to green is reduced to obtain red light emission.
  • the yellow pixel portion S (Y) the light from the organic EL element 40 is first converted to substantially yellow by transmitting through the wavelength conversion layer 25, and further, by transmitting through the yellow color filter 24Y, yellow light is emitted. It has gained.
  • the organic EL element 40 is exemplified as the excitation light source, but the present invention is not limited to this.
  • a light emitting diode or an inorganic electroluminescent element may be used as an excitation light source.
  • a display device includes the above-described organic EL light emitting device according to the present invention.
  • FIG. 9 is a schematic front view showing a display device according to an eighth embodiment of the present invention.
  • an organic EL light emitting device 2010 including an organic EL substrate 2001 and a wavelength conversion substrate 2002 disposed to face the organic EL substrate 2001, and the region where the organic EL substrate 2001 and the wavelength conversion substrate 2002 face each other.
  • a printed wiring board (FPC) 2008 and an external drive circuit 2009 are provided.
  • the display device 2000 can be a flexible display device that can bend the pixel portion 2003 and the like into a curved surface.
  • the organic EL substrate 2001 is electrically connected to an external drive circuit 2009 including a scanning line electrode circuit, a data signal electrode circuit, a power supply circuit, and the like through the FPC 2008 to drive a light emitting unit including an anode, an organic EL layer, and a cathode. It is connected.
  • a switching circuit such as a TFT is arranged in the pixel portion 2003, and a data signal side driving circuit 2005 and a gate for driving the light emitting portion to a wiring such as a data line and a gate line to which the TFT and the like are connected.
  • a signal side drive circuit 2004 is connected to each other, and an external drive circuit 2009 is connected to these drive circuits via a signal wiring 2006.
  • a plurality of gate lines and a plurality of data lines are arranged, and TFTs are arranged at intersections of the gate lines and the data lines.
  • FIG. 10 is a circuit diagram showing an equivalent circuit of one pixel (sub-pixel) in the display device.
  • the light emitting unit is driven by a voltage-driven digital gray scale method, and two TFTs, a switching TFT and a driving TFT, are arranged for each pixel, and the driving TFT and the anode of the light emitting unit are connected via a contact hole. Electrically connected. Further, a capacitor for setting the gate potential of the driving TFT to a constant potential is arranged in one pixel so as to be connected to the gate electrode of the driving TFT.
  • the present invention is not particularly limited thereto, and the driving method may be the voltage-driven digital gradation method described above or the current-driven analog gradation method.
  • the number of TFTs is not particularly limited, and the light emitting unit may be driven by two TFTs as described above, and compensation is performed in the pixel for the purpose of preventing variations in TFT characteristics (mobility, threshold voltage).
  • the light emitting unit may be driven using two or more TFTs incorporating a circuit.
  • the illumination device according to the present invention includes the above-described wavelength conversion type organic EL light emitting device according to the present invention.
  • FIG. 11 is a schematic perspective view which shows the illuminating device which is 9th Embodiment of this invention.
  • the lighting device shown here is a lighting stand.
  • An illumination stand 2100 shown here includes an illumination unit 2101, a stand 2102, a power switch 2103, a power cord 2104, and the like, and the illumination unit 2101 includes the above-described wavelength conversion type organic EL light emitting device according to the present invention.
  • the illumination stand 2100 includes the above-described wavelength conversion type organic EL light-emitting device, so that light extraction efficiency is high and power consumption is low.
  • FIG. 12 is a schematic front view which shows an example of the electronic device which is 10th Embodiment of this invention.
  • the electronic device shown here is a television receiver.
  • a television receiver 2200 shown here includes a display unit 2201, a speaker 2202, a cabinet 2203, a stand 2204, and the like, and further includes the above-described wavelength conversion type organic EL light emitting device according to the present invention in the display unit 2201. Yes.
  • the television receiver 2200 includes the above-described wavelength conversion organic EL light-emitting device, so that the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • FIG. 13 is a schematic front view which shows an example of the electronic device which is 10th Embodiment of this invention.
  • the electronic device shown here is a portable game machine.
  • a portable game machine 2300 shown here includes an operation button 2301, an infrared port 2302, an LED lamp 2303, a display unit 2304, a housing 2305, and the like, and the display unit 2304 has the above-described wavelength conversion organic EL according to the present invention.
  • a light emitting device is provided.
  • the portable game machine 2300 includes the above-described wavelength conversion type organic EL light-emitting device, so that the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • FIG. 14 is a schematic perspective view showing an example of an electronic apparatus according to the tenth embodiment of the present invention.
  • the electronic device shown here is a notebook computer.
  • a laptop computer 2400 shown here includes a display portion 2401, a keyboard 2402, a pointing device 2403, a power switch 2404, a camera 2405, an external connection port 2406, a housing 2407, and the like, and the display portion 2401 has the above-described wavelength according to the present invention.
  • a conversion type organic EL light emitting device is provided. Since the notebook personal computer 2400 includes the above-described wavelength conversion organic EL light emitting device, the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • FIG. 15 is a schematic perspective view which shows an example of the electronic device which is 10th Embodiment concerning this invention.
  • the electronic device shown here is a smartphone (tablet terminal).
  • a smartphone 2500 shown here includes an audio input unit 2501, an audio output unit 2502, an operation switch 2503, a display unit 2504, a touch panel 2505, a housing 2506, and the like, and the display unit 2504 has the wavelength conversion method according to the present invention described above.
  • An organic EL light emitting device is provided.
  • the smartphone 2500 includes the above-described wavelength conversion organic EL light-emitting device, so that the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • FIG. 16 is a schematic perspective view which shows an example of the electronic device which is 10th Embodiment based on this invention.
  • the electronic device shown here is a wristwatch type display (wearable computer).
  • a wristwatch type display 2600 shown here includes a power switch 2601, a display portion 2602, a fixed band 2603, and the like, and further includes the above-described wavelength conversion type organic EL light emitting device according to the present invention in the display portion 2602. .
  • the wristwatch-type display 2600 includes the above-described wavelength conversion type organic EL light-emitting device, so that the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • FIG. 17 is a schematic perspective view showing an example of an electronic apparatus according to the tenth embodiment of the invention.
  • the electronic device shown here is a head mounted display (wearable computer).
  • a head mounted display 2700 shown here includes a power switch 2701, a display unit 2702, a fixed band 2703, a frame 2704, and the like, and further includes the above-described wavelength conversion type organic EL light emitting device according to the present invention in the display unit 2702. Has been.
  • the head mounted display 2700 includes the above-described wavelength conversion type organic EL light-emitting device, so that the light extraction efficiency is high, the power consumption is low, and high-definition display is possible.
  • Some embodiments of the present invention can be applied to an organic EL display device, a lighting device, and an electronic apparatus.
  • SYMBOLS 10 Organic EL element substrate, 11 ... Substrate, 12 ... TFT circuit, 13 ... Interlayer insulating film, 14 ... Planarization film, 15 ... Active matrix substrate, 16 ... 1st bank, 17 ... sealing layer, 20 ... wavelength conversion substrate, 21 ... transparent substrate, 22 ... black matrix, 23 ... partition, 24 ... color filter layer, 25. ..Wavelength conversion layer, 26 ... scattering layer, 27 ... circular polarizing plate, 28 ... protective layer, 30 ... filling layer, 40 ... organic EL element, 41 ... organic EL layer 42 ... 1st electrode, 43 ... 2nd electrode, 44 ... Hole injection layer, 45 ...

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Abstract

L'invention concerne un substrat de conversion de longueur d'onde (100) comprenant un substrat transparent (21), et une partie de sortie de lumière ayant au moins trois types de différentes distributions de longueurs d'onde de sortie agencées indépendamment l'une de l'autre sur une surface (21a) du substrat transparent (21), la partie de sortie de lumière comprenant une matrice noire en forme de treillis (22), des parois de séparation (23) disposées sur la matrice noire (22), et une couche de filtre coloré (24) à travers laquelle une partie de la lumière incidente est transmise dans une pluralité de régions délimitées par les parois de séparation (23) et/ou une couche de conversion de longueur d'onde (25) qui absorbe la lumière incidente et émet une lumière ayant des distributions de longueurs d'onde différentes, et la couche de conversion de longueur d'onde (25) étant formée d'un matériau qui émet de la lumière comprenant des distributions de longueurs d'onde de sortie émises à partir d'une première partie de sortie de lumière (51) et d'une seconde partie de sortie de lumière (52).
PCT/JP2016/062622 2015-04-24 2016-04-21 Substrat de conversion de longueur d'onde, dispositif électroluminescent, et appareil d'affichage, appareil d'éclairage et équipement électronique les comprenant WO2016171207A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109545822A (zh) * 2017-09-22 2019-03-29 三星电子株式会社 显示面板以及具有所述显示面板的显示装置
CN110024142A (zh) * 2016-11-24 2019-07-16 Lg伊诺特有限公司 半导体器件和包括半导体器件的显示装置
JP2020109757A (ja) * 2018-12-28 2020-07-16 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． 表示装置
CN112057745A (zh) * 2019-06-11 2020-12-11 乐金显示有限公司 用于皮肤管理或皮肤治疗的电子装置
WO2023223889A1 (fr) * 2022-05-17 2023-11-23 凸版印刷株式会社 Substrat de conversion de longueur d'onde et dispositif d'affichage
WO2024101353A1 (fr) * 2022-11-08 2024-05-16 Ｔｏｐｐａｎホールディングス株式会社 Substrat de conversion de longueur d'onde et dispositif d'affichage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222576A1 (en) * 2002-05-28 2003-12-04 Ritdisplay Corporation Full color organic light-emitting display device
JP2004103534A (ja) * 2002-07-03 2004-04-02 Fuji Electric Holdings Co Ltd 有機ｅｌディスプレイおよびその製造方法
US20040245921A1 (en) * 2003-06-03 2004-12-09 Lu Tien Rong Full color display panel and color-separating substrate thereof
JP2006107761A (ja) * 2004-09-30 2006-04-20 Fuji Electric Holdings Co Ltd 色変換機能付カラーフィルタおよびそれを用いた有機ｅｌディスプレイ
JP2012119331A (ja) * 2005-12-28 2012-06-21 Samsung Mobile Display Co Ltd カラーフィルタ基板，およびカラーフィルタ基板を利用した有機発光表示装置
US20130082589A1 (en) * 2011-10-04 2013-04-04 Universal Display Corporation Power efficient rgbw oled display
JP2013196854A (ja) * 2012-03-16 2013-09-30 Sharp Corp 蛍光体基板およびこれを備えた表示装置
US20150048348A1 (en) * 2013-08-14 2015-02-19 Ye Xin Technology Consulting Co., Ltd. Display panel
JP2015064391A (ja) * 2012-01-23 2015-04-09 シャープ株式会社 蛍光体基板、表示装置および電子機器
JP2015125994A (ja) * 2013-12-26 2015-07-06 業▲キン▼科技顧問股▲ふん▼有限公司 色転換層、色転換層を有する有機ｅｌ発光表示パネル及び液晶表示パネル

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222576A1 (en) * 2002-05-28 2003-12-04 Ritdisplay Corporation Full color organic light-emitting display device
JP2004103534A (ja) * 2002-07-03 2004-04-02 Fuji Electric Holdings Co Ltd 有機ｅｌディスプレイおよびその製造方法
US20040245921A1 (en) * 2003-06-03 2004-12-09 Lu Tien Rong Full color display panel and color-separating substrate thereof
JP2006107761A (ja) * 2004-09-30 2006-04-20 Fuji Electric Holdings Co Ltd 色変換機能付カラーフィルタおよびそれを用いた有機ｅｌディスプレイ
JP2012119331A (ja) * 2005-12-28 2012-06-21 Samsung Mobile Display Co Ltd カラーフィルタ基板，およびカラーフィルタ基板を利用した有機発光表示装置
US20130082589A1 (en) * 2011-10-04 2013-04-04 Universal Display Corporation Power efficient rgbw oled display
JP2015064391A (ja) * 2012-01-23 2015-04-09 シャープ株式会社 蛍光体基板、表示装置および電子機器
JP2013196854A (ja) * 2012-03-16 2013-09-30 Sharp Corp 蛍光体基板およびこれを備えた表示装置
US20150048348A1 (en) * 2013-08-14 2015-02-19 Ye Xin Technology Consulting Co., Ltd. Display panel
JP2015125994A (ja) * 2013-12-26 2015-07-06 業▲キン▼科技顧問股▲ふん▼有限公司 色転換層、色転換層を有する有機ｅｌ発光表示パネル及び液晶表示パネル

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110024142A (zh) * 2016-11-24 2019-07-16 Lg伊诺特有限公司 半导体器件和包括半导体器件的显示装置
CN110024142B (zh) * 2016-11-24 2023-02-17 Lg伊诺特有限公司 半导体器件和包括半导体器件的显示装置
CN109545822A (zh) * 2017-09-22 2019-03-29 三星电子株式会社 显示面板以及具有所述显示面板的显示装置
CN109545822B (zh) * 2017-09-22 2024-03-15 三星电子株式会社 显示面板以及具有所述显示面板的显示装置
JP2020109757A (ja) * 2018-12-28 2020-07-16 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． 表示装置
CN112057745A (zh) * 2019-06-11 2020-12-11 乐金显示有限公司 用于皮肤管理或皮肤治疗的电子装置
US11311743B2 (en) 2019-06-11 2022-04-26 Lg Display Co., Ltd. Electronic device for skin management or skin treatments
WO2023223889A1 (fr) * 2022-05-17 2023-11-23 凸版印刷株式会社 Substrat de conversion de longueur d'onde et dispositif d'affichage
WO2024101353A1 (fr) * 2022-11-08 2024-05-16 Ｔｏｐｐａｎホールディングス株式会社 Substrat de conversion de longueur d'onde et dispositif d'affichage

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