WO2016006194A1 - 有機発光デバイスと有機表示装置 - Google Patents
有機発光デバイスと有機表示装置 Download PDFInfo
- Publication number
- WO2016006194A1 WO2016006194A1 PCT/JP2015/003246 JP2015003246W WO2016006194A1 WO 2016006194 A1 WO2016006194 A1 WO 2016006194A1 JP 2015003246 W JP2015003246 W JP 2015003246W WO 2016006194 A1 WO2016006194 A1 WO 2016006194A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bank
- layer
- substrate
- light emitting
- organic light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
-
- 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]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
-
- 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]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
-
- 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
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
Definitions
- the present invention relates to an organic light emitting device and an organic display device, and more particularly to a configuration of a bank that defines a light emitting portion.
- Patent Document 1 organic light-emitting devices such as organic EL (electroluminescence) panels and organic EL lighting have been actively developed.
- Patent Document 1 The configuration of the organic EL panel according to the prior art will be described with reference to FIG.
- a TFT layer 901 is formed on the main surface (main surface on the upper side in the Z-axis direction) of the substrate 900, and an insulating layer 902 is formed thereon. ing. An anode 903 and a hole injection layer 904 are sequentially stacked on the insulating layer 902 in units of subpixels that are light emitting units.
- a second bank 915 extending in the X-axis direction is formed on the insulating layer 902 and in a gap including the edges of the anode 903 and the hole injection layer 904 in the Y-axis direction.
- a first bank 905 is also formed on the insulating layer 902 and extending in the Y-axis direction so as to intersect the second bank 915.
- Organic films such as a hole transport layer 906, an organic light emitting layer 907, and an electron transport layer 908 are sequentially stacked between adjacent first banks 905. Then, a cathode 909 and a sealing layer 910 are sequentially stacked so as to cover the electron transport layer 908 and the exposed surface of the first bank 905.
- the color filter panel part is laminated
- a defective formation of the hole transport layer 906 may occur in the portion of the upper surface 915a of the second bank 915 (portion indicated by the arrow F).
- the present inventors have found that the formation failure of the organic film is likely to occur in the skirt portion 905b of the first bank 905 in the upper surface 915a of the first bank 915 as shown in FIG. It was determined that the region was close (portion indicated by arrow G).
- Such poor formation of the organic film on the second bank 915 may lead to poor film thickness of the organic film at the light emitting portions on both sides thereof, and may cause a reduction in light emitting performance.
- the present invention has been made in order to solve the above-described problems, and suppresses the occurrence of defective formation of an organic film in a gap region between adjacent light emitting portions, and has high light emitting performance.
- An object is to provide a light emitting device and an organic display device.
- An organic light-emitting device is an organic light-emitting device in which a plurality of light-emitting portions are two-dimensionally arranged in a direction along the main surface of a substrate, and each of the plurality of light-emitting portions is a main substrate.
- the first electrode, the charge transport layer, the organic light emitting layer, and the second electrode are stacked in a first direction that intersects the direction along the plane.
- the first electrode is disposed above the substrate.
- the charge transport layer is an organic layer disposed above the first electrode.
- the organic light emitting layer is disposed above the charge transport layer.
- the second electrode is disposed above the organic light emitting layer.
- each of the plurality of light emitting units is The second direction is defined by a plurality of first banks, and the third direction is defined by a plurality of second banks.
- the plurality of first banks are formed along the main surface of the substrate and extending in the third direction.
- the plurality of second banks are formed along the main surface of the substrate and extending in the second direction.
- the charge transport layer and the organic light emitting layer are continuously formed between the adjacent first banks so as to straddle the second bank.
- the first bank and the second bank are each made of an insulating material, the thickness of the second bank is 20% or less of the height of the first bank, and the contact angle of the surface portion of the second bank is the first. It is lower than the contact angle of the surface portion of the bank.
- the organic light-emitting device by defining the first bank and the second bank as described above, it is possible to suppress the occurrence of defective formation of the organic film in the gap region between the adjacent light-emitting portions. And has high luminous performance.
- FIG. 1 is a schematic block diagram showing a schematic configuration of an organic EL display device 1 according to an embodiment of the present invention.
- 3 is a schematic plan view showing an arrangement form of sub-pixels 10a to 10c, 10c 1 and 10c 2 in the display panel 10.
- FIG. 3 is a schematic cross-sectional view showing a configuration in the AA cross section of FIG. 2.
- FIG. 3 is a schematic cross-sectional view showing a configuration on a BB cross section of FIG. 2.
- (A) is a schematic plan view which shows the arrangement
- (b) is a schematic cross section which shows the part pointed by the arrow C of (a), (c).
- FIG. (A) is a schematic plan view which shows the cross
- (b) is the schematic cross section.
- (A) is a perspective view (partial sectional view) showing a partial configuration of a display panel according to the prior art
- (b) is a sectional view showing one form of poor formation of the hole transport layer 906
- (C) is a top view which shows the location where the formation defect of an organic film tends to arise.
- the second bank 915 is provided to prevent a short circuit between adjacent anodes 903 and to prevent electroluminescence at the edge of the anode 903.
- the formation failure of the organic film may occur on the upper surface 915a of the second bank 915.
- the present inventors have found that the thickness of the second bank 915 and the contact angle at the surface portion are greatly affected. It was.
- the thickness of the organic film of the subpixel (light emitting portion) on both sides of the second bank 915 varies. Such a variation in the thickness of the organic film causes a decrease in light emission quality.
- the unwetting of the ink when forming the organic film is a region near the skirt portion 905b of the first bank 905 in the upper surface 915a of the first bank 915 (arrow G). Point to).
- An organic light-emitting device is an organic light-emitting device in which a plurality of light-emitting portions are two-dimensionally arranged in a direction along the main surface of a substrate, and each of the plurality of light-emitting portions is a main substrate.
- the first electrode, the charge transport layer, the organic light emitting layer, and the second electrode are stacked in a first direction that intersects the direction along the plane.
- the first electrode is disposed above the substrate.
- the charge transport layer is an organic layer disposed above the first electrode.
- the organic light emitting layer is disposed above the charge transport layer.
- the second electrode is disposed above the organic light emitting layer.
- each of the plurality of light emitting units is The second direction is defined by a plurality of first banks, and the third direction is defined by a plurality of second banks.
- the plurality of first banks are formed along the main surface of the substrate and extending in the third direction.
- the plurality of second banks are formed along the main surface of the substrate and extending in the second direction.
- the plurality of first banks are spaced from each other in the second direction, and the plurality of second banks are spaced from each other in the third direction.
- the charge transport layer and the organic light emitting layer are continuously formed between the adjacent first banks so as to straddle the second bank.
- the first bank and the second bank are each made of an insulating material, the thickness of the second bank is 20% or less of the height of the first bank, and the contact angle of the surface portion of the second bank is the first. It is lower than the contact angle of the surface portion of the bank.
- the thickness of the second bank is 20% or less of the height of the first bank, and the contact angle of the surface portion of the second bank is 5 °.
- the height of the first bank is ensured at the intersection between the first bank and the second bank by defining the thickness of the second bank to 20% or less with respect to the height of the first bank. It is excellent from the viewpoint of ensuring liquid repellency during ink application.
- the thickness of the second bank is too high, the height of the first bank cannot be ensured at the intersection of the first bank and the second bank, resulting in a decrease in liquid repellency.
- the thickness of the second bank is 20% or less with respect to the height of the first bank, the liquid repellency of the first bank including the intersection can be ensured.
- the organic light emitting device According to the above aspect, it is possible to suppress the formation failure of the organic film in the gap region between the adjacent light emitting portions, and to obtain high light emitting performance.
- the first electrode has a flat region along a plane defined by the second direction and the third direction in a part of the edge region.
- the second bank also covers the flat area of the first electrode.
- the thickness of the 2nd bank in the said crossing part is prescribed
- the contact angle of the surface portion of the second bank is the contact angle with respect to the ink related to the formation of the charge transport layer.
- the thickness of the second bank is 800 nm or less in the above configuration.
- the lower limit of the thickness of the second bank differs depending on the material used for forming the second bank. That is, it is a thickness that can achieve the original purpose of the second bank of preventing short circuit between adjacent anodes and preventing electroluminescence at the edge of the anode.
- the contact angle of the surface portion of the second bank is 5 ° or less.
- An organic display device includes a display panel and a control drive circuit unit connected to the display panel, and the device structure according to any one of the above aspects is employed as the display panel. Has been. Thereby, excellent light emission quality (display quality) can be obtained for the same reason as above.
- the organic EL display device 1 As shown in FIG. 1, the organic EL display device 1 according to the present embodiment as an organic display device includes a display panel 10 and a drive / control circuit unit 20 connected thereto.
- the display panel 10 is a kind of organic light emitting device, and is an organic EL panel using an electroluminescent phenomenon of an organic material.
- a plurality of sub-pixels (sub-pixel portions) 10a ⁇ 10c, 10c 1, 10c 2 are arranged two-dimensionally in the X-axis direction and the Y-axis direction.
- a light-emitting portion subpixel 10a emits red light (R)
- a light-emitting portion subpixel 10b emits a the green light (G)
- the sub-pixels 10c, 10c 1, 10c 2 is a light emitting portion for emitting blue light (B).
- One pixel (pixel portion) is configured by a combination of three subpixels 10a to 10c adjacent in the X-axis direction.
- the drive / control circuit unit 20 in the organic EL display device 1 includes four drive circuits 21 to 24 and one control circuit 25.
- the arrangement relationship between the display panel 10 and the drive / control circuit unit 20 in the organic EL display device 1 is not limited to the form shown in FIG.
- the configuration of the pixel is not limited to the form of the combination of the three subpixels 10a to 10c as shown in FIG. 2, and one pixel is composed of a combination of four or more subpixels. May be configured.
- FIGS. 3 shows the AA cross section in FIG. 2, and FIG. 4 shows the BB cross section in FIG.
- the display panel 10 has a configuration in which a plurality of functional layers are stacked between two substrates 100 and 114.
- the TFT layer 101 is formed on the substrate 100 on the lower side in the Z-axis direction. In FIG. 3 and the like, although the detailed illustration of the TFT layer 101 is omitted, it is a TFT layer having a known configuration. On the TFT layer 101, an anode 103 and a hole injection layer 104 are stacked in this order from the lower side in the Z-axis direction via an insulating layer 102.
- a first bank 105 is formed so as to cover the insulating layer 102 and both edges of the hole injection layer 104 in the X-axis direction.
- the first bank 105 defines the subpixel 10a in the X-axis direction.
- a hole transport layer 106 In the opening defined on both sides in the X-axis direction by the first bank 105, a hole transport layer 106, an organic light emitting layer 107, and an electron transport layer 108 are stacked in order from the lower side in the Z-axis direction.
- the cathode 109 and the sealing layer 110 are laminated in order from the lower side in the Z-axis direction so as to cover the electron transport layer 108 and the top surface of the first bank 105.
- a color filter layer 113 and a black matrix layer 112 are formed on the main surface on the lower side in the Z-axis direction of the substrate 114 disposed on the upper side in the Z-axis direction.
- a resin layer 111 is interposed between the sealing layer 110 and the color filter layer 113 and the black matrix layer 112, and between the sealing layer 110 and the resin layer 111, and between the color filter layer 113 and the black matrix layer. 112 and the resin layer 111 are in close contact with each other without a gap.
- the display panel 10 is a top emission type display panel, and emits upward light in the Z-axis direction as indicated by an arrow.
- the second bank 115 is formed so as to cover the edge including the edges of the anode 103 and the hole injection layer 104.
- the second bank 115 is partially embedded in the contact hole 102a.
- organic films such as the hole transport layer 106, the organic light emitting layer 107, and the electron transport layer 108 are continuously formed in the Y-axis direction across the second bank 115 between the adjacent first banks 105. Has been.
- the substrate 100 is, for example, a glass substrate, a quartz substrate, a silicon substrate, molybdenum sulfide, copper, zinc, aluminum, stainless steel, magnesium, iron, nickel, gold, silver or other metal substrate, a gallium arsenide based semiconductor substrate, a plastic substrate, or the like. Etc. are used.
- thermoplastic resin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide (PI), Polyamideimide, polycarbonate, poly- (4-methylbenten-1), ionomer, acrylic resin, polymethyl methacrylate, acrylic-styrene copolymer (AS resin), butadiene-styrene copolymer, polio copolymer (EVOH) ), Polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate (PEN), precyclohexane terephthalate (PCT), polyethers, polyether ketones Polyethers
- the TFT layer 101 includes one or a plurality of transistor element portions for each subpixel, and each transistor element portion includes three electrodes of a gate, a source, and a drain, a semiconductor layer, a passivation film, and the like.
- the insulating layer 102 is formed using, for example, an organic compound such as polyimide, polyamide, or acrylic resin material.
- the insulating layer 102 preferably has organic solvent resistance.
- the insulating layer 102 may be subjected to an etching process, a baking process, or the like during the manufacturing process, the insulating layer 102 is formed using a highly resistant material that does not cause excessive deformation or alteration to the process. It is desirable that
- the anode 103 is made of a metal material containing silver (Ag) or aluminum (Al).
- the surface portion thereof preferably has high reflectivity.
- the anode 103 not only a single layer structure made of a metal material as described above but also a laminate of a metal layer and a transparent conductive layer can be adopted.
- a constituent material of the transparent conductive layer for example, indium tin oxide (ITO), indium zinc oxide (IZO), or the like can be used.
- Hole injection layer 104 is formed of, for example, an oxide such as silver (Ag), molybdenum (Mo), chromium (Cr), vanadium (V), tungsten (W), nickel (Ni), iridium (Ir), or PEDOT. It is a layer made of a conductive polymer material such as (mixture of polythiophene and polystyrene sulfonic acid).
- an oxide such as silver (Ag), molybdenum (Mo), chromium (Cr), vanadium (V), tungsten (W), nickel (Ni), iridium (Ir), or PEDOT.
- It is a layer made of a conductive polymer material such as (mixture of polythiophene and polystyrene sulfonic acid).
- organic light emission is achieved by stabilizing holes or assisting the generation of holes as compared with the case of using a conductive polymer material such as PEDOT. It has a function of injecting holes into the layer 107 and has a large work function.
- the hole injection layer 104 is made of a transition metal oxide, a plurality of levels can be taken by taking a plurality of oxidation numbers. As a result, hole injection becomes easy and the drive voltage is reduced. Can be reduced. In particular, it is desirable to use tungsten oxide (WO X ) from the viewpoint of stably injecting holes and assisting the generation of holes.
- WO X tungsten oxide
- First bank 105 The first bank 105 is formed using an organic material such as a resin and has an insulating property. Examples of organic materials used to form the first bank 105 include acrylic resins, polyimide resins, novolac type phenol resins, and the like. The surface of the first bank 105 can be treated with fluorine in order to provide the surface with water repellency.
- the structure of the first bank 105 not only a single layer structure as shown in FIGS. 3 and 4, but also a multilayer structure of two or more layers can be adopted.
- the above materials can be combined for each layer, and an inorganic material and an organic material can be used for each layer.
- Second bank 115 can be formed using an inorganic insulating material such as SiO 2 (silicon oxide), SiN (silicon nitride), or SiON (silicon oxynitride), or an organic insulating material.
- an inorganic insulating material such as SiO 2 (silicon oxide), SiN (silicon nitride), or SiON (silicon oxynitride), or an organic insulating material.
- organic insulating material examples include, for example, acrylic resins, polyimide resins, siloxane resins, phenol resins, and the like.
- Hole transport layer 106 is formed using a polymer compound having no hydrophilic group.
- a polymer compound having no hydrophilic group for example, polyfluorene or a derivative thereof, or a polymer compound such as polyarylamine or a derivative thereof that does not have a hydrophilic group can be used.
- Organic light emitting layer 107 has a function of emitting light by generating an excited state when holes and electrons are injected and recombined.
- As a material used for forming the organic light emitting layer 107 it is necessary to use a light emitting organic material that can be formed by a wet printing method.
- the oxinoid compound, perylene compound, coumarin compound, azacoumarin compound, oxazole compound, oxadiazole compound, perinone compound, pyrrolopyrrole described in the patent publication (Japan / JP-A-5-163488) Compound, naphthalene compound, anthracene compound, fluorene compound, fluoranthene compound, tetracene compound, pyrene compound, coronene compound, quinolone compound and azaquinolone compound, pyrazoline derivative and pyrazolone derivative, rhodamine compound, chrysene compound, phenanthrene compound, cyclopentadiene compound, stilbene compound , Diphenylquinone compound, styryl compound, butadiene compound, dicyanomethylenepyran compound, dicyanomethylenethiopyran compound, fluoro Cein compounds, pyrylium compounds, thiapyrylium
- Electron transport layer 108 has a function of transporting electrons injected from the cathode 109 to the organic light emitting layer 107, and includes, for example, an oxadiazole derivative (OXD), a triazole derivative (TAZ), and a phenanthroline derivative (BCP, Bphen). ) Or the like.
- OXD oxadiazole derivative
- TEZ triazole derivative
- BCP phenanthroline derivative
- Cathode 109 is formed using, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
- ITO indium tin oxide
- IZO indium zinc oxide
- permeability shall be 80 [%] or more.
- the sealing layer 110 has a function of suppressing exposure of an organic layer such as the organic light emitting layer 106 to moisture or exposure to air.
- an organic layer such as the organic light emitting layer 106
- silicon nitride (SiN) silicon oxynitride (SiON) It is formed using materials such as.
- a sealing resin layer made of a resin material such as an acrylic resin or a silicone resin may be provided over a layer formed using a material such as silicon nitride (SiN) or silicon oxynitride (SiON).
- the sealing layer 110 needs to be formed of a light transmissive material.
- Resin layer 111 is formed from a transparent resin material, for example, an epoxy resin material. However, as a constituent material, a silicone resin or the like can also be used.
- Black matrix layer 112 is made of, for example, an ultraviolet curable resin material containing a black pigment having excellent light absorption and light shielding properties.
- Specific examples of the ultraviolet curable resin material include an acrylic resin.
- Color filter layer 113 is made of a known material that selectively transmits visible light in the wavelength range of each color of red (R), green (G), and blue (B). For example, it is formed based on an acrylic resin.
- Substrate 114 is similar to the substrate 100, for example, a glass substrate, a quartz substrate, a silicon substrate, molybdenum sulfide, copper, zinc, aluminum, stainless steel, magnesium, iron, nickel, gold, silver or other metal substrate, gallium arsenide base These are formed using a semiconductor substrate such as a plastic substrate.
- a semiconductor substrate such as a plastic substrate.
- the substrate 114 when a plastic substrate is employed, any of a thermoplastic resin and a thermosetting resin may be used.
- each of the plurality of first banks 105 is formed to extend in the Y-axis direction with a space between each other.
- the plurality of second banks 115 are also formed so as to extend in the X-axis direction with each being spaced apart from each other.
- regions surrounded by two adjacent first banks 105 and two adjacent second banks 115 are subpixel formation regions 116a to 116c, respectively.
- the hole injection layer 104 is exposed in each of the subpixel formation regions 116a to 116c before the hole transport layer 106 is formed.
- the first bank 105 is stacked on the second bank 115 at the intersection of the first bank 105 and the second bank 115. Then, as shown in FIG. 5B, the height of the first bank 105 with respect to the upper surface in the Z-axis direction of the insulating layer 104 is set to H105 .
- the surface portion including the surface portion 105a in the first bank 105 is subjected to liquid repellent treatment.
- the hole transport layer 106 is not formed, the surface 104a of the hole injection layer 104 is exposed in the subpixel formation regions 116a to 116c, and the surface 104a has lyophilicity.
- the second bank 115 is formed in a portion including the contact hole 102a in the insulating layer 102.
- the thickness of the second bank 115 is defined by the thickness H 115 above the portion 102b where the upper surface of the insulating layer 102 is substantially flat. This is because the thickness of the second bank 115 is considered to change depending on the location in the contact hole 102a.
- the thickness H 115 of the second bank 115 is defined as 800 nm or less, and is defined as 20% or less with respect to the height H 105 of the first bank 105.
- the thickness H 115 of the second bank 115 in this way, the height of the first bank 105 is ensured at the intersection between the first bank 105 and the second bank 115 shown in FIG. Can do.
- the liquid repellency can be lowered.
- the thickness H 115 of the bank 115 it is possible to ensure the liquid repellency of the first bank 105 as a whole including the intersection. Thereby, the overflow of the ink to the adjacent area at the time of forming the organic film can be reliably suppressed, and high light emission performance can be ensured.
- the surface portion 115 a of the second bank 115 has lower liquid repellency than the surface portion 105 a of the first bank 105.
- the contact angle of the surface portion 115a of the second bank 115 is defined to be 5 ° or less, and the contact angle at the surface portion 105a of the first bank 105 (particularly, the contact angle of the surface portion at the top). Is defined lower.
- Such a regulation of the contact angle can suppress the occurrence of non-wetting on the second bank 115 without excessively increasing the number of ink drops when forming the hole transport layer 106, for example. This is because light emission performance can be obtained.
- a TFT substrate is prepared (step S1).
- the TFT substrate is obtained by forming the TFT layer 101 on the upper surface of the substrate 100 and is manufactured by a known technique.
- the insulating layer 102 is formed on the TFT substrate (step S2).
- the insulating layer 102 is formed by, for example, applying an organic material on the passivation film in the TFT layer 101, flattening and solidifying the surface, and then opening the contact hole 102a.
- the anode 103 and the hole injection layer 104 are sequentially stacked on the insulating layer 102 (steps S3 and S4).
- the anode 103 is formed, for example, by forming a metal film using a sputtering method or a vacuum deposition method and then patterning using a photolithography method and an etching method.
- the formed anode 103 is connected to the upper electrode (electrode connected to the source or drain) of the TFT layer 101 through the contact hole 102a of the insulating layer 102.
- the hole injection layer 104 is formed by, for example, forming a film made of a metal oxide (for example, tungsten oxide) using a sputtering method, and then patterning the subpixels 10a to 10c using a photolithography method and an etching method. That is done.
- a metal oxide for example, tungsten oxide
- the second bank 115 is formed (step S5).
- the second bank 115 is formed by laminating a film made of a constituent material (for example, a photosensitive acrylic resin material) of the second bank 115 by using a spin coat method or the like. Then, this resin film is patterned by exposure / development.
- a constituent material for example, a photosensitive acrylic resin material
- the first bank 105 is formed (step S6).
- the formation of the first bank 105 is made of a constituent material (for example, a photosensitive resin material) of the first bank 105 so as to cover the entire upper portion of the substrate 100 including the second bank 115 using, for example, a spin coating method. Laminate.
- the formed resin film is patterned by exposure / development.
- UV (ultraviolet) irradiation processing and baking processing are performed on the formed first bank 105 and second bank 115 (step S7).
- the UV irradiation treatment is, for example, 150 to 200 sec.
- the baking process is performed at a temperature of 150 to 230 ° C. for 10 to 20 min. Do.
- the contact angles at the surface portions of the first bank 105 and the second bank 115 both increase, but decrease by performing the baking process. This is because the fluorine component in the film is once decomposed and oozes out to the film surface by performing the UV treatment, and the contact angle is obtained by the excessive fluorine component being decomposed by the subsequent baking treatment. Is considered to be low.
- the contact angle in the first bank 115 also changes as described above. However, since the original contact angle is large depending on the material used, the relationship of the relative contact angle with the second bank 115 is controlled. be able to.
- the hole transport layer 106 is formed in the groove defined by the two adjacent first banks 105 (step S8).
- the hole transport layer 106 is formed, for example, by applying an ink containing a constituent material for the hole transport layer 106 to a region between the first banks 105 and then baking it using a printing method.
- the organic light emitting layer 107 and the electron transport layer 108 are sequentially stacked and formed in the groove defined by the two adjacent first banks 105 (steps S9 and S10).
- the formation of the organic light emitting layer 107 and the electron transport layer 108 is also performed by applying an ink containing each constituent material and baking it as described above.
- the cathode 109 and the sealing layer 110 are sequentially stacked so as to cover the electron transport layer 108 and the top surface of the first bank 105 (steps S11 and S12).
- the cathode 109 and the sealing layer 110 are formed by using, for example, a sputtering method.
- the display panel 10 is completed by bonding the color filter substrate having the color filter layer 113 and the black matrix layer 112 formed thereon to the substrate 114 (step S13).
- the present inventors show that the contact angle in the second bank 115 is close to the intersection with the first bank 105 (portions indicated by arrows E 1 and E 2 ). I found out that it tends to grow. That is, the contact angle of the second bank 115 at the portion close to the skirt portion 105b of the first bank 105 is increased, and conventionally, the portion is not easily wetted.
- the baking process is performed after the formation of the first bank 105 and the second bank 115 (step S7 in FIG. 6). It is considered that this is because a part of the fluorine component moves toward the second bank 115. For this reason, it is considered that the contact angle in the region close to the skirt portion 105b of the first bank 105 also increases in the surface portion 115a of the second bank 115.
- the contact angle is defined to be lower than the contact angle of the surface portion 105a of the first bank 105.
- [Discussion] 1 Consideration on the thickness H 115 of the second bank 115
- the first bank 105 is applied after the second bank 115 is formed, but the area of the second bank 115 is small, and the first bank 105 The prescribed film thickness of the second bank 115 is less than half of the other portions. For this reason, the amount of fluorine retained in the first bank 105 becomes smaller on the second bank 115, and the contact angle of the surface portion 105a of the first bank 105 becomes lower than a predetermined value. As described above, if the contact angle at a part of the surface portion 105a of the first bank 105 becomes small, it is considered that the ink cannot be held at the portion, which causes overflow.
- the thickness H 115 of the second bank 115 is thicker (higher height), Asked it also as a non-wetting not completely wet ink on the second bank 115.
- the thickness H 115 of the second bank 115 is defined as described above.
- the contact angle at the surface portion 115a of the second bank 115 is set lower than the contact angle at the surface portion 105a of the first bank 105. Yes. This is intended to improve the wettability by executing the UV process. However, if the contact angle cannot be sufficiently lowered after the UV process and the bake process, the second bank 115 is dried when the ink is dried. This is because the ink is repelled and the ink cannot be averaged between pixels. Averaging the ink between the pixels is an important matter for suppressing display unevenness. In the present embodiment, therefore, the contact angle at the surface portion 115a of the second bank 115 is determined in the first bank. The contact angle of the surface portion 105a of 105 is set lower.
- the display panel 10 was applied as an example of an organic light emitting device, this invention is not limited to this.
- the same effect as described above can be obtained by applying the configuration of the present invention to organic EL lighting or the like.
- the active matrix display panel 10 is used.
- the present invention is not limited to this.
- the same effect as described above can be obtained by applying the structure of the present invention to a passive matrix display panel.
- the contact angle of the surface portion 115a of the second bank 115 is specified to be 5 ° or less, but the present invention is not limited to this. In short, if the contact angle of the surface portion 115a of the second bank 115 is lower than the contact angle of the surface portion 105a of the first bank 105, the above effect can be obtained due to the relative relationship.
- one pixel is composed of a combination of three sub-pixels 10a to 10c each having a rectangular shape in plan view.
- the planar view shape of each subpixel may be a triangle, a hexagon, an octagon, or the like, or may be a honeycomb shape as a whole.
- the number of subpixels constituting one pixel can be four subpixels or more. In that case, the sub-pixels constituting one pixel may have different emission colors, or some of them may emit the same color.
- the first bank 105 and the second bank 115 are formed as different layers. However, the first bank 105 and the second bank 115 are continuously formed using the same material, and the thickness of the second bank and the surface portion thereof. The contact angle may be different within the above range.
- the top emission type display panel 10 is adopted as an example.
- the configuration of the present invention is adopted for the bottom emission type display panel, the same effect as described above can be obtained. it can.
- the present invention is useful for realizing an organic light emitting device and an organic display device having high light emitting performance.
- Organic EL display device 10. Display panels 10a to 10c, 10c 1 , 10c 2 . Subpixel 20. Drive / control circuit section 21-24. Drive circuit 25. Control circuit 100. Substrate 101. TFT layer 102. Insulating layer 103. Anode 104. Hole injection layer 105. First bank 106. Hole transport layer 107. Organic light emitting layer 108. Electron transport layer 109. Cathode 110. Sealing layer 111. Resin layer 112. Black matrix layer 113. Color filter layer 114. Substrate 115. Second bank 116a-116c. Subpixel formation area
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
本発明者等が本発明の各態様を推考するにあたり検討した事項について、引き続き図8を用い説明する。
本発明の一態様に係る有機発光デバイスは、複数の発光部が基板の主面に沿った方向に二次元配置されてなる有機発光デバイスであって、複数の発光部の各々が、基板の主面に沿った方向に対して交差する第1方向において、第1電極、電荷輸送層、有機発光層、第2電極が積層された構成を有する。
以下では、図面を参酌しながら実施の形態に係る有機EL表示装置1の構成について説明する。
本実施の形態に係る有機EL表示装置1の概略構成について、図1および図2を用い説明する。
表示パネル10の構成について、図3および図4を用い説明する。なお、図3は、図2におけるA-A断面を示し、図4は、図2におけるB-B断面を示す。
(1)基板100
基板100は、例えば、ガラス基板、石英基板、シリコン基板、硫化モリブデン、銅、亜鉛、アルミニウム、ステンレス、マグネシウム、鉄、ニッケル、金、銀などの金属基板、ガリウム砒素基などの半導体基板、プラスチック基板等を用い形成されている。
TFT層101は、各サブピクセル毎に1または複数のトランジスタ素子部を備え、各トランジスタ素子部は、ゲート、ソース、ドレインの3電極と、半導体層、パッシベーション膜などを含み構成されている。
絶縁層102は、例えば、ポリイミド、ポリアミド、アクリル系樹脂材料などの有機化合物を用い形成されている。ここで、絶縁層102は、有機溶剤耐性を有することが好ましい。
アノード103は、銀(Ag)またはアルミニウム(Al)を含む金属材料から構成されている。トップエミッション型の本実施の形態に係る表示パネル10の場合には、その表面部が高い反射性を有することが好ましい。
ホール注入層104は、例えば、銀(Ag)、モリブデン(Mo)、クロム(Cr)、バナジウム(V)、タングステン(W)、ニッケル(Ni)、イリジウム(Ir)などの酸化物、あるいは、PEDOT(ポリチオフェンとポリスチレンスルホン酸との混合物)などの導電性ポリマー材料からなる層である。
第1バンク105は、樹脂等の有機材料を用い形成されており絶縁性を有する。第1バンク105の形成に用いる有機材料の例としては、アクリル系樹脂、ポリイミド系樹脂、ノボラック型フェノール樹脂等があげられる。第1バンク105は、表面に撥水性をもたせるために、表面をフッ素処理することもできる。
第2バンク115は、SiO2(酸化シリコン)、SiN(窒化シリコン)、SiON(酸窒化シリコン)などの無機絶縁材料や、有機絶縁材料などを用い形成することができる。
ホール輸送層106は、親水基を備えない高分子化合物を用い形成されている。例えば、ポリフルオレンやその誘導体、あるいはポリアリールアミンやその誘導体などの高分子化合物であって、親水基を備えないものなどを用いることができる。
有機発光層107は、ホールと電子とが注入され再結合されることにより励起状態が生成され発光する機能を有する。有機発光層107の形成に用いる材料は、湿式印刷法を用い製膜できる発光性の有機材料を用いることが必要である。
電子輸送層108は、カソード109から注入された電子を有機発光層107へ輸送する機能を有し、例えば、オキサジアゾール誘導体(OXD)、トリアゾール誘導体(TAZ)、フェナンスロリン誘導体(BCP、Bphen)などを用い形成されている。
カソード109は、例えば、酸化インジウムスズ(ITO)若しくは酸化インジウム亜鉛(IZO)などを用い形成される。本実施の形態のように、トップエミッション型の本実施の形態に係る表示パネル10の場合においては、光透過性の材料で形成されることが必要となる。光透過性については、透過率が80[%]以上とすることが好ましい。
封止層110は、有機発光層106などの有機層が水分に晒されたり、空気に晒されたりすることを抑制する機能を有し、例えば、窒化シリコン(SiN)、酸窒化シリコン(SiON)などの材料を用い形成される。また、窒化シリコン(SiN)、酸窒化シリコン(SiON)などの材料を用い形成された層の上に、アクリル樹脂、シリコーン樹脂などの樹脂材料からなる封止樹脂層を設けてもよい。
樹脂層111は、透明樹脂材料、例えば、エポキシ系樹脂材料から形成されている。ただし、構成材料としては、これ以外にもシリコーン系樹脂などを用いることもできる。
ブラックマトリクス層112は、例えば、光吸収性および遮光性に優れる黒色顔料を含む紫外線硬化樹脂材料から構成されている。具体的な紫外線硬化樹脂材料としては、例えば、アクリル樹脂等がある。
カラーフィルタ層113としては、赤色(R)、緑色(G)、青色(B)の各色の波長域の可視光を選択的に透過する、公知の材料から構成される。例えば、アクリル樹脂をベースに形成されている。
基板114は、上記基板100と同様に、例えば、ガラス基板、石英基板、シリコン基板、硫化モリブデン、銅、亜鉛、アルミニウム、ステンレス、マグネシウム、鉄、ニッケル、金、銀などの金属基板、ガリウム砒素基などの半導体基板、プラスチック基板等を用い形成されている。基板114についても、プラスチック基板を採用する場合には、熱可塑性樹脂、熱硬化性樹脂の何れの樹脂を用いてもよい。
第1バンク105および第2バンク115の形態について、図5を用い説明する。
次に、図5(c)に示すように、第2バンク115は、絶縁層102におけるコンタクト孔102aを含む部分に形成されている。ここで、第2バンク115の厚みについては、絶縁層102の上面が略平坦な部分102bの上方での厚みH115により規定する。これは、コンタクト孔102a内においては、第2バンク115の厚みは場所により変化すると考えられるためである。
本実施の形態に係る表示パネル10の製造方法について、その概要について、図6を用い説明する。
第2バンク115における接触角について、図7を用い説明する。
1.第2バンク115の厚みH115についての考察
本実施の形態では、第2バンク115を形成した後に第1バンク105を塗布形成しているが、第2バンク115の面積が小さく、第1バンク105の規定膜厚が第2バンク115上では他の部分の半分以下となる。このため、第1バンク105内のフッ素保持量が第2バンク115上で小さくなってしまい、第1バンク105の表面部分105aの接触角が所定値よりも低くなる。このように第1バンク105の表面部分105aの一部における接触角が小さくなると、当該部分でのインク保持ができず溢れの原因となることが考えられる。
本実施の形態では、第2バンク115の表面部分115aにおける接触角について、第1バンク105の表面部分105aの接触角よりも低く設定している。これは、UV処理の実行によって濡れ性の向上を図るのであるが、UV処理およびベーク処理の実行後に接触角を十分に低い状態とすることができないと、インク乾燥の際に第2バンク115上でインクが弾かれてしまい、画素間におけるインクの平均化を図ることができないためである。画素間におけるインクの平均化を図ることは、表示ムラを抑制するために重要な事項であって、これより、本実施の形態では第2バンク115の表面部分115aにおける接触角について、第1バンク105の表面部分105aの接触角よりも低く設定している。
上記実施の形態では、有機発光デバイスの一例として表示パネル10を適用したが、本発明は、これに限定を受けるものではない。例えば、有機EL照明などに本発明の構成を適用することでも上記同様の効果を得ることができる。
10.表示パネル
10a~10c,10c1,10c2.サブピクセル
20.駆動・制御回路部
21~24.駆動回路
25.制御回路
100.基板
101.TFT層
102.絶縁層
103.アノード
104.ホール注入層
105.第1バンク
106.ホール輸送層
107.有機発光層
108.電子輸送層
109.カソード
110.封止層
111.樹脂層
112.ブラックマトリクス層
113.カラーフィルタ層
114.基板
115.第2バンク
116a~116c.サブピクセル形成領域
Claims (6)
- 複数の発光部が基板の主面に沿った方向に二次元配置されてなる有機発光デバイスであって、
前記複数の発光部の各々は、前記基板の主面に沿った方向に対して交差する第1方向において、
前記基板の上方に配置された第1電極と、
前記第1電極の上方に配置された有機層である電荷輸送層と、
前記電荷輸送層の上方に配置された有機発光層と、
前記有機発光層の上方に配置された第2電極と、
を有し構成されており、
前記基板の主面に沿った方向における一の方向を第2方向とし、前記基板に沿った方向における前記第2方向に対して交差する方向を第3方向とするとき、
前記複数の発光部の各々は、
前記第2方向において、前記基板の主面に沿い、且つ、それぞれが前記第3方向に延伸形成された複数の第1バンクにより規定され、
前記第3方向において、前記基板の主面に沿い、且つ、それぞれが前記第2方向に延伸形成された複数の第2バンクにより規定されており、
前記電荷輸送層および前記有機発光層は、隣り合う前記第1バンク間において、前記第2バンクを跨いで連続的に形成されており、
前記第1バンクおよび前記第2バンクは、それぞれ絶縁性材料からなるとともに、前記第2バンクの厚みが前記第1バンクの高さの20%以下であり、前記第2バンクの表面部分の接触角が前記第1バンクの表面部分の接触角よりも低い
ことを特徴とする有機発光デバイス。 - 前記第1電極は、端縁領域の一部において、前記第2方向および前記第3方向により規定される平面に沿う平坦領域を有し、
前記第2バンクは、前記第1電極における前記平坦領域の上方も覆っており、
前記第2バンクの厚みは、前記第1電極における前記平坦領域の上方部分の厚みである
請求項1記載の有機発光デバイス。 - 前記第2バンクの表面部分の接触角は、前記電荷輸送層の形成に係るインクに対する接触角である
請求項1または請求項2記載の有機発光デバイス。 - 前記第2バンクの厚みは、800nm以下である
請求項1から請求項3の何れか記載の有機発光デバイス。 - 前記第2バンクの表面部分の接触角は、5°以下である
請求項1から請求項4の何れか記載の有機発光デバイス。 - 表示パネルと、
前記表示パネルに接続された制御駆動回路部と、
を備え、
前記表示パネルとして、請求項1から請求項5の何れかのデバイス構造が採用されている
ことを特徴とする有機表示装置。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/324,680 US9876061B2 (en) | 2014-07-09 | 2015-06-29 | Organic light-emitting device and organic display apparatus |
| JP2016532422A JPWO2016006194A1 (ja) | 2014-07-09 | 2015-06-29 | 有機発光デバイスと有機表示装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014141292 | 2014-07-09 | ||
| JP2014-141292 | 2014-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016006194A1 true WO2016006194A1 (ja) | 2016-01-14 |
Family
ID=55063850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2015/003246 Ceased WO2016006194A1 (ja) | 2014-07-09 | 2015-06-29 | 有機発光デバイスと有機表示装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9876061B2 (ja) |
| JP (1) | JPWO2016006194A1 (ja) |
| WO (1) | WO2016006194A1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10109690B2 (en) * | 2014-03-20 | 2018-10-23 | Joled Inc. | Organic light-emitting panel and organic light-emitting device with optimized bank profile |
| CN108987452B (zh) | 2018-08-24 | 2020-12-15 | 京东方科技集团股份有限公司 | 一种显示基板、显示基板的制备方法及显示装置 |
| JP7528016B2 (ja) * | 2021-03-31 | 2024-08-05 | キヤノン株式会社 | 発光装置、表示装置、撮像装置、及び電子機器 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007188862A (ja) * | 2005-12-13 | 2007-07-26 | Canon Inc | 有機el発光装置およびその製造方法 |
| JP2011108578A (ja) * | 2009-11-20 | 2011-06-02 | Toppan Printing Co Ltd | 有機el発光素子およびその製造方法 |
| JP2011119078A (ja) * | 2009-12-02 | 2011-06-16 | Panasonic Corp | 機能膜の製造方法 |
| JP2013206861A (ja) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | 表示素子の製造方法及び表示素子 |
| JP2013206864A (ja) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | 有機el素子 |
| JP2013214360A (ja) * | 2012-03-30 | 2013-10-17 | Toppan Printing Co Ltd | 光学素子製造装置、光学素子製造方法及び光学素子 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05163488A (ja) | 1991-12-17 | 1993-06-29 | Konica Corp | 有機薄膜エレクトロルミネッセンス素子 |
| US5443922A (en) | 1991-11-07 | 1995-08-22 | Konica Corporation | Organic thin film electroluminescence element |
| JP2002075640A (ja) | 2000-08-30 | 2002-03-15 | Dainippon Screen Mfg Co Ltd | 有機el表示装置の製造方法およびその製造装置 |
-
2015
- 2015-06-29 WO PCT/JP2015/003246 patent/WO2016006194A1/ja not_active Ceased
- 2015-06-29 US US15/324,680 patent/US9876061B2/en active Active
- 2015-06-29 JP JP2016532422A patent/JPWO2016006194A1/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007188862A (ja) * | 2005-12-13 | 2007-07-26 | Canon Inc | 有機el発光装置およびその製造方法 |
| JP2011108578A (ja) * | 2009-11-20 | 2011-06-02 | Toppan Printing Co Ltd | 有機el発光素子およびその製造方法 |
| JP2011119078A (ja) * | 2009-12-02 | 2011-06-16 | Panasonic Corp | 機能膜の製造方法 |
| JP2013206861A (ja) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | 表示素子の製造方法及び表示素子 |
| JP2013206864A (ja) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | 有機el素子 |
| JP2013214360A (ja) * | 2012-03-30 | 2013-10-17 | Toppan Printing Co Ltd | 光学素子製造装置、光学素子製造方法及び光学素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| US9876061B2 (en) | 2018-01-23 |
| JPWO2016006194A1 (ja) | 2017-04-27 |
| US20170213880A1 (en) | 2017-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10312308B2 (en) | Organic light emitting device and method for manufacturing same | |
| JP5574112B2 (ja) | 表示装置とその製造方法 | |
| JP5735527B2 (ja) | 有機発光パネルとその製造方法、および有機表示装置 | |
| JP5197882B2 (ja) | 有機発光パネルとその製造方法、および有機表示装置 | |
| JP2016091841A (ja) | 有機発光デバイスと有機表示装置 | |
| JPWO2011077479A1 (ja) | 表示装置とその製造方法 | |
| JP6332769B2 (ja) | 有機発光デバイスと有機表示装置 | |
| US9917277B2 (en) | Display panel and production method therefor | |
| US10109690B2 (en) | Organic light-emitting panel and organic light-emitting device with optimized bank profile | |
| JP6336093B2 (ja) | 表示パネルの製造方法 | |
| WO2016006194A1 (ja) | 有機発光デバイスと有機表示装置 | |
| JP6332772B2 (ja) | 有機発光デバイスと有機表示装置 | |
| JP2015207526A (ja) | 有機発光デバイスの機能層の形成方法 | |
| JP6032659B2 (ja) | 有機発光パネルおよび有機表示装置 | |
| JP2016062764A (ja) | 有機表示デバイスと有機表示装置 | |
| JP6205663B2 (ja) | 表示パネルおよびその製造方法 | |
| JP2013105894A (ja) | 薄膜トランジスタ装置とその製造方法、有機el表示素子、および有機el表示装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15819189 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2016532422 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 15324680 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15819189 Country of ref document: EP Kind code of ref document: A1 |