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WO2009093426A1 - Elément électroluminescent et écran - Google Patents

Elément électroluminescent et écran Download PDF

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Publication number
WO2009093426A1
WO2009093426A1 PCT/JP2009/000146 JP2009000146W WO2009093426A1 WO 2009093426 A1 WO2009093426 A1 WO 2009093426A1 JP 2009000146 W JP2009000146 W JP 2009000146W WO 2009093426 A1 WO2009093426 A1 WO 2009093426A1
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Prior art keywords
light
light emitting
color conversion
layer
conversion layer
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Ceased
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PCT/JP2009/000146
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English (en)
Japanese (ja)
Inventor
Takashi Ohta
Noriyuki Matsusue
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Panasonic Corp
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Panasonic Corp
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    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures
    • H10K2102/3023—Direction of light emission
    • H10K2102/3026—Top emission

Definitions

  • the present invention relates to a light emitting element, and more particularly to an organic EL light emitting element used for a flat display or the like.
  • a configuration in which light emitting elements that emit blue, green, and red light are arranged as a full color display device using organic EL light emitting elements has been proposed.
  • a configuration is proposed in which a configuration of a light-emitting element in which a transparent electrode, an organic EL layer, and a reflective electrode are sequentially arranged directly on a transparent substrate is employed, and a color conversion layer is provided on the light emitting side.
  • a configuration of a light-emitting element in which a transparent electrode, an organic EL layer, and a reflective electrode are sequentially arranged directly on a transparent substrate is employed, and a color conversion layer is provided on the light emitting side.
  • an organic EL light emitting device having a resonator structure with two electrodes, by providing a color conversion layer, components in an unnecessary wavelength region of the emitted color are reduced and the color purity of extracted light is improved. There is a way.
  • the color conversion layer has been provided on the light emitting side.
  • a light emitting element in which a light reflecting layer 52, an electrode 54, an organic EL layer 55, and a transparent electrode 56 are sequentially laminated on a substrate 51, and a substrate in which a color conversion layer 53 is disposed on a glass substrate; When the two are bonded together, a positional shift occurs between the color conversion layer 53 and the light emitting element, which causes a reduction in light extraction efficiency.
  • An object of the present invention is to provide an organic EL light emitting element capable of improving the light extraction efficiency and capable of displaying with excellent color reproducibility, and an organic EL display device using the same.
  • the light emitting device includes a light reflection layer, A first color conversion layer provided on the light reflecting layer; A first electrode provided on the first color conversion layer; A light emitting layer provided on the first electrode; A second electrode provided on the light emitting layer; With Light is extracted from the second electrode.
  • the second electrode may be translucent with respect to light emitted from the light emitting layer and transparent with respect to light subjected to color conversion in the first color conversion layer.
  • the first electrode may be transparent for each of light emitted from the light emitting layer and light color-converted by the first color conversion layer.
  • the light reflecting layer may be selected from the group of aluminum, magnesium, gold, silver, copper, chromium, nickel, palladium, neodymium, molybdenum and alloys containing one or more of these.
  • the first color conversion layer may be selected from the group of a coloring filter, a dichroic filter, and a bandpass filter.
  • the first color conversion layer may contain a fluorescent dye.
  • the light emitting layer may have a laminated structure.
  • the first color conversion layer may be configured separately for each pixel.
  • the first color conversion layer may be formed of the same film thickness and the same material for each pixel, or may be formed of a different film thickness or a different material for each pixel.
  • both the first color conversion layer and the light reflection layer may be configured separately for each pixel.
  • both the first color conversion layer and the light reflection layer may be formed of the same film thickness and the same material for each pixel.
  • the first color conversion layer may be configured in common over a plurality of pixels.
  • a second color conversion layer provided on the second electrode may be further provided.
  • the second color conversion layer is separated for each pixel.
  • the light-emitting element according to the present invention can be used for a passive matrix display device. Furthermore, the light-emitting element according to the present invention can be used for an active matrix display device.
  • the first color conversion layer is provided not on the light extraction side but on the light reflection layer side when viewed from the light emitting layer.
  • a color conversion layer is provided on the light extraction side, so that sufficient color conversion efficiency cannot be obtained.
  • the light emitting element of the present invention the light emitted from the light emitting layer undergoes color conversion for a part thereof in the first color conversion layer, and the light reflected by the light reflecting layer is the first color conversion layer. Pass again. Therefore, since light passes through the first color conversion layer twice or more, the color conversion efficiency can be improved.
  • an organic EL light emitting element capable of displaying with improved light extraction efficiency and excellent color reproducibility, and an organic EL display device using the same can be provided. Further, by performing a series of processes of sequentially laminating the first electrode, the organic EL layer, and the second electrode on the first color conversion layer, it is possible to suppress the displacement of the first color conversion layer. And the light extraction efficiency can be improved. Furthermore, since the light emitting layer is provided after the first color conversion layer is disposed, it is possible to prevent the material used for the first color conversion layer from entering the light emitting layer.
  • FIG. 1 is a cross-sectional view illustrating a configuration of a light-emitting element 10 according to Embodiment 1 of the present invention.
  • a light reflecting layer 12 is formed on a substrate 11.
  • a first color conversion layer 13 is formed on the light reflection layer 12.
  • a first electrode 14 is formed on the first color conversion layer 13.
  • a light emitting layer 15 having a multilayer structure including an organic EL layer is formed on the first electrode 14.
  • the light emitting layer 15 is configured by sequentially laminating an electron transport layer, an organic EL layer, and a hole transport layer in order from the first electrode 14 side (not shown).
  • a second electrode 16 is provided on the light emitting layer 15.
  • the light emitting element 10 is a top emission type that extracts light from the second electrode 16 side opposite to the first color conversion layer 13.
  • This light emitting element 10 is characterized in that the first color conversion layer 13 is provided on the light reflecting layer 12 side, not on the light extraction side as viewed from the light emitting layer 15. Of the light emitted from the light emitting layer 15, the light emitted downward is color-converted by the first color conversion layer 13, reflected by the light reflection layer 12, the first color conversion layer 13, and the first electrode 14. The light-emitting layer 15 and the second electrode 16 are transmitted through and emitted upward.
  • a part of the light emitted upward from the light emitting layer 15 passes through the second electrode 16 as it is and is emitted upward, and another part of the light emitted upward from the light emitting layer 15 is reflected downward, so that the first The color conversion layer 13 performs color conversion, is reflected by the light reflection layer 12, passes through the second electrode 16, and exits upward.
  • the light emitting element 10 the light emitted from the light emitting layer 15 undergoes color conversion for a part thereof by the first color conversion layer 13, and the light reflected by the light reflecting layer 12 passes through the first color conversion layer 13. Pass again. Therefore, since light passes through the first color conversion layer 13 twice, color conversion efficiency can be improved.
  • the first color conversion layer 13 between the light reflection layer 12 and the first electrode 14, it is possible to suppress a decrease in extraction efficiency of light extracted from the light emitting layer 15.
  • the material used for the first color conversion layer 13 can be prevented from entering the light emitting layer 15.
  • the color conversion layer 53 is provided with an object to absorb unnecessary wavelength region components, and therefore the color conversion layer 53 is provided on the light extraction side. It was. Therefore, there is no known arrangement in which the first color conversion layer 13 is provided on the light reflecting layer 12 side like the light emitting element 10 according to Embodiment 1 of the present application, and the opposite side to the light extraction side. Conventionally, it has not been considered at all to arrange a color conversion layer.
  • the second electrode 16 is preferably translucent for light emitted from the light emitting layer 15 and transparent for light color-converted by the first color conversion layer 13.
  • the wavelength selectivity of the extracted light can be improved by allowing the second electrode 16 to selectively transmit the light whose color has been converted by the first color conversion layer 13.
  • each structural member which comprises this light emitting element 10 is demonstrated.
  • the substrate 11 glass plates such as soda glass, non-fluorescent glass, phosphoric acid glass, boric acid glass, quartz, acrylic resin, styrene resin, polycarbonate resin, epoxy resin, polyethylene, polyester, silicone resin, etc.
  • a plastic plate and a plastic film, a metal plate such as alumina, and a metal foil can be used.
  • the substrate 11 is required to be a transparent substrate such as a glass substrate.
  • the light reflecting layer 12 is made of magnesium, silver, or an alloy thereof.
  • the light reflecting layer 12 may be selected from the group of aluminum, magnesium, gold, silver, copper, chromium, nickel, palladium, neodymium, molybdenum and alloys containing one or more of these.
  • the light reflecting layer 12 preferably has a thickness of 5 to 50 nm.
  • the first color conversion layer 13 has a function of transmitting part of the light emitted from the light emitting layer 15, absorbing part of the light, and emitting light having a wavelength (color) different from the absorbed wavelength (color).
  • a colored transparent filter, a dichroic mirror, a band pass filter, or the like can be used as the first color conversion layer 13 .
  • the constituent material of the first color conversion layer 13 include organic pigments, particle-added organic pigments, metal oxides, resins containing the metal oxides, inorganic or organic fluorescent dyes, and the like.
  • the first electrode 14 is made of a conductive material having sufficient translucency with respect to the light generated in the light emitting layer 15.
  • the first electrode 14 is preferably transparent for each of the light emitted from the light emitting layer 15 and the light color-converted by the first color conversion layer 13.
  • the light emitting layer 15 is not limited to a single layer and may have a multilayer structure.
  • the light emitting layer may include an organic EL layer containing an organic light emitter. Furthermore, an electron transport layer and a hole transport layer that sandwich the organic EL layer may be further included. Furthermore, an electron injection layer and / or a hole injection layer may be provided.
  • the electron injection layer and the hole injection layer can be formed by vapor deposition, spin coating, casting, or the like.
  • Electrode transporting layer having electron transporting ability
  • the electron transporting layer having electron transporting ability include nitro-substituted fluorenone derivatives, thiopyrandioxide derivatives, diphequinone derivatives, perylene tetracarboxyl derivatives, anthraquinodimethane derivatives, fluorenylidenes described in JP-A-5-163488.
  • Compounds such as methane derivatives, anthrone derivatives, oxadiazole derivatives, perinone derivatives, quinoline complex derivatives, and the like can be used.
  • Organic EL layer Specific examples include oxinoid compounds, perylene compounds, coumarin compounds, azacoumarin compounds, oxazole compounds, oxadiazole compounds, perinone compounds, pyrrolopyrrole compounds, naphthalene compounds, anthracenes described in JP-A-5-163488.
  • hole transport layer Specific examples include triazole derivatives, oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives and pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives described in JP-A-5-163488.
  • Amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, stilbene derivatives, porphyrin compounds, aromatic tertiary amine compounds and styrylamine compounds, butadiene compounds, polystyrene derivatives, hydrazone derivatives, triphenylmethane derivatives, Tetraphenylbenzine derivatives and the like can be used, but particularly preferably, porphyrin compounds, aromatic tertiary amine compounds, and styrylamine compounds A.
  • the second electrode 16 is preferably made of a conductive material that transmits only light of a specific wavelength with respect to the light generated in the light emitting layer 15. Further, the light emitted from the light emitting layer 15 may be translucent, and the light subjected to color conversion by the first color conversion layer 13 may be transparent. By allowing the second electrode 16 to selectively transmit the light whose color has been converted by the first color conversion layer 13, the wavelength selectivity of the light extracted from the second electrode 16 can be improved.
  • a material constituting the second electrode 16 indium tin oxide (ITO), indium zinc oxide (IZO), or the like is preferable. This is because good conductivity can be obtained even if the film is formed at room temperature.
  • FIG. 2 is a cross-sectional view showing the configuration of the light-emitting element 20 according to Embodiment 2 of the present invention.
  • the light emitting element 20 is a bottom emission type in which the light extraction direction is opposite to that of the light emitting element according to Embodiment 1, and the light emission is extracted from the bottom substrate 11 side. Accordingly, the light emitting element 20 is different in that the arrangement is changed so that the light reflecting layer 12 and the first color conversion layer 13 are provided on the upper portion. In this case, since light is extracted from the bottom substrate 11 side, the substrate 11 needs to be a transparent substrate.
  • Example 1 About the organic EL element 10 which concerns on Example 1 of this invention, the optical simulation was performed on condition of the following.
  • an AgPdCu alloy (abbreviation: APC) was used as a light reflection layer.
  • APC AgPdCu alloy
  • 120 nm of ITO 20 nm of electron injection layer, 80 nm of light emitting layer, hole injection layer
  • FIG. 3 and 4 show the optical simulation results regarding the light emission from the light emitting layer.
  • FIG. 3 is a graph showing the relationship between the light extraction efficiency and the thickness of the color filter (CF) as the first color conversion layer.
  • FIG. 4 is a graph showing the relationship of the angle color difference ( ⁇ uv) with respect to the thickness of the color filter (CF) for each of the observation angles of 65 degrees and 85 degrees.
  • ⁇ uv angle color difference
  • the light extraction efficiency is improved by providing a color filter with a thickness of 110 nm on the light reflection layer.
  • the change in the angular color difference ( ⁇ uv) on the coordinates is very small due to the deviation of the viewing angle from the front toward the oblique direction.
  • the observation angle is a line connecting the observation point and the center of the surface of the light-emitting layer 15 with a line passing through the center of the surface of the light-emitting layer 15 and perpendicular to the surface of the light-emitting layer 15 as an axis (0 degree).
  • the angle X formed by the axis In FIG. 1, the angle X is shown on the surface of the second electrode 16 on the light extraction side. However, considering that the film thickness is smaller than the distance to the observation point, they are substantially the same angle. Can be considered. Further, the angle color difference ( ⁇ uv) at the observation angle X degrees can be obtained by the following equation.
  • uX and vX are u value and v value when an emission spectrum with a wavelength of 380 to 780 nm is measured at an observation angle of X degrees.
  • U0 and v0 are the u value and the v value when the emission spectrum with a wavelength of 380 to 780 nm is measured at an observation angle of 0 degree.
  • FIG. 5 is a cross-sectional view showing the configuration of the light emitting element 30 according to Embodiment 3 of the present invention.
  • the light emitting element 30 is different from the light emitting element 10 according to the first embodiment in that one pixel includes a plurality of subpixels (pixels) having R, G, and B as emission colors.
  • a light reflecting layer 12 is formed on the substrate 11.
  • first color conversion layers 13B, 13G, and 13R are formed for each pixel.
  • a first electrode 14 is formed on the first color conversion layers 13B, 13G, and 13R. Note that the first color conversion layers 13B, 13G, and 13R may have the same thickness for each pixel.
  • light emitting layers 15B, 15G, and 15R having a multilayer structure including an organic EL layer are formed on the first electrode.
  • the light emitting layers 15B, 15G, and 15R are configured by sequentially laminating an electron transport layer, an organic EL layer, and a hole transport layer from the first electrode 14 side (not shown).
  • a second electrode 16 is provided on the light emitting layers 15B, 15G, and 15R.
  • the light emitting element 30 is a top emission type in which light is extracted from the second electrode 16 side opposite to the first color conversion layer 13.
  • the thickness of the laminated structure is set equal for each subpixel.
  • the viewing angle of the organic EL display device is sufficiently expanded, and the organic EL light-emitting element that hardly causes a decrease in contrast due to a change in viewing angle, a hue change, and the like An organic EL display device using the same can be provided (not shown).
  • This light emitting element 30 is characterized in that the first color conversion layers 13B, 13G, and 13R are provided not on the light extraction side from the light emitting layers 15B, 15G, and 15R but on the light reflection layer 12 side.
  • the first color conversion layers 13B, 13G, 13R, the first electrode 14, the light emitting layers 15B, 15G, 15R, and the second electrode 16 are transmitted and emitted upward.
  • a part of the light emitted upward from the light emitting layers 15B, 15G, and 15R passes through the second electrode 16 as it is and is emitted upward, and part of the light is reflected downward, and the first color conversion layers 13B, 13G, The color is converted by 13R, is reflected by the light reflecting layer 12, passes through the second electrode 16, and is emitted upward.
  • the light emitted from the light emitting layers 15B, 15G, and 15R undergoes color conversion for some of the first color conversion layers 13B, 13G, and 13R, and the light reflected by the light reflecting layer 12 is reflected. It passes through the first color conversion layers 13B, 13G, and 13R again. Therefore, since light passes through the first color conversion layers 13B, 13G, and 13R twice, color conversion efficiency can be improved. Further, by disposing the first color conversion layers 13B, 13G, and 13R between the light reflecting layer 12 and the first electrode 14, it is possible to suppress a decrease in extraction efficiency of light extracted from the light emitting layers 15B, 15G, and 15R. be able to. In addition, the material used for the first color conversion layers 13B, 13G, and 13R can be prevented from entering the light-emitting layers 15B, 15G, and 15R.
  • FIG. 6 is a cross-sectional view showing the configuration of the light emitting element 40 according to Embodiment 4 of the present invention.
  • the light emitting element 40 is different from the light emitting element 30 according to Embodiment 3 in that the first color conversion layer 13 is configured in common over a plurality of pixels (blue, green, red). Therefore, in the present embodiment, the first color conversion layer 13 is made of the same material over a plurality of pixels.
  • the first color conversion layer 13 that is common to a plurality of pixels is a material having selective transparency for each wavelength band of blue, green, red extracted from each pixel, for example, It is preferable to use a three-wavelength filter or the like.
  • the first color conversion layer 13 only needs to be continuous over each pixel, and may have irregularities between the pixels as shown in FIG. Further, the first color conversion layer 13 may have a different thickness for each pixel or the same thickness. Further, the first color conversion layer 13 may be flush with the entire pixel.
  • the first color conversion layer 13 is configured in common over a plurality of pixels, whereby the manufacturing process can be simplified.
  • FIG. 7 is a cross-sectional view showing a configuration of the light emitting element 50 according to Embodiment 5 of the present invention.
  • the light-emitting element 50 is provided with second color conversion layers 17B, 17G, and 17R that are configured separately for each pixel on the second electrode 16. It is different in point.
  • a light reflecting layer 12 is formed on the substrate 11.
  • first color conversion layers 13B, 13G, and 13R are formed for each pixel.
  • a first electrode 14 is formed on the first color conversion layers 13B, 13G, and 13R.
  • light emitting layers 15B, 15G, and 15R having a multilayer structure including an organic EL layer are formed on the first electrode.
  • the light emitting layers 15B, 15G, and 15R are configured by sequentially laminating an electron transport layer, an organic EL layer, and a hole transport layer in this order from the first electrode 14 side (not shown).
  • a second electrode 16 is provided on the light emitting layers 15B, 15G, and 15R.
  • second color conversion layers 17B, 17G, and 17R provided for each pixel on the second electrode 16 are provided.
  • the light emitting element 50 is a top emission type in which light is extracted from the second electrode 16 side opposite to the first color conversion layers 13B, 13G, and 13R.
  • the second color conversion layers 17B, 17G, and 17R are provided on the light extraction side when viewed from the light emitting layers 15B, 15G, and 15R, but also the first color conversion on the light reflection layer 12 side.
  • Layers 13B, 13G, and 13R are provided. Of the light emitted from the light emitting layers 15B, 15G, and 15R, the light emitted downward is color-converted by the first color conversion layers 13B, 13G, and 13R, reflected by the light reflecting layer 12, and then the first color conversion layer.
  • the light passes through 13B, 13G, and 13R, the first electrode 14, the light emitting layers 15B, 15G, and 15R, the second electrode 16, and the second color conversion layers 17B, 17G, and 17R, and is emitted upward.
  • a part of the light emitted upward from the light emitting layer 15 is transmitted through the second electrode 16 and the second color conversion layers 17B, 17G, and 17R to be emitted upward, and emitted upward from the light emitting layers 15B, 15G, and 15R.
  • the other part of the reflected light is reflected downward, color-converted by the first color conversion layers 13B, 13G, and 13R, reflected by the light reflection layer 12, and the second electrode 16 and the second color conversion layer.
  • the light passes through 17B, 17G, and 17R and is emitted upward.
  • the light emitted from the light emitting layers 15B, 15G, and 15R undergoes color conversion for a part thereof by the first color conversion layers 13B, 13G, and 13R, and is reflected by the light reflecting layer 12. Passes again through the first color conversion layers 13B, 13G, and 13R.
  • the reflected light passing through the multilayer light emitting layers 15B, 15G, and 15R and the light emitted from the light emitting layers 15B, 15G, and 15R toward the second electrode 16 are the second color conversion layers 17B, 17G, and 17R. And the color conversion efficiency can be further improved.
  • first color conversion layers 13B, 13G, and 13R between the light reflecting layer 12 and the first electrode 14, it is possible to suppress a decrease in extraction efficiency of light extracted from the light emitting layers 15B, 15G, and 15R. be able to.
  • the material used for the first color conversion layers 13B, 13G, and 13R can be prevented from entering the light-emitting layers 15B, 15G, and 15R.
  • FIG. 8 is a cross-sectional view showing the configuration of the light emitting element 60 according to Embodiment 6 of the present invention.
  • the light emitting element 60 is different from the light emitting element 50 according to the fifth embodiment in that the first color conversion layer 13 is configured in common over a plurality of pixels (blue, green, red). Therefore, in the present embodiment, the first color conversion layer 13 is made of the same material over a plurality of pixels.
  • the first color conversion layer 13 that is common to a plurality of pixels (blue, green, red) is a material having selective transparency for each wavelength band of blue, green, red extracted from each pixel, for example, It is preferable to use a three-wavelength filter or the like.
  • the first color conversion layer 13 only needs to be continuous over each pixel, and may have irregularities between the pixels as shown in FIG. Further, the first color conversion layer 13 may have a different thickness for each pixel or the same thickness. Further, the first color conversion layer 13 may be flush with the entire pixel.
  • the first color conversion layer 13 is configured in common over a plurality of pixels, whereby the manufacturing process can be simplified.
  • the present invention can be used for organic EL display devices used for flat light sources, flat displays, and the like.

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  • Electroluminescent Light Sources (AREA)

Abstract

L'élément électroluminescent selon la présente invention est équipé d'une couche réfléchissante ; d'une première couche de conversion de couleur agencée sur la couche réfléchissante ; d'une première électrode agencée sur la couche de conversion de couleur ; d'une couche électroluminescente agencée sur première électrode ; et d'une seconde électrode agencée sur la couche électroluminescente. L'élément électroluminescent extrait la lumière à partir de la seconde électrode.
PCT/JP2009/000146 2008-01-21 2009-01-16 Elément électroluminescent et écran Ceased WO2009093426A1 (fr)

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JP2008-010296 2008-01-21
JP2008010296 2008-01-21

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WO2009093426A1 true WO2009093426A1 (fr) 2009-07-30

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012046599A1 (fr) * 2010-10-06 2012-04-12 シャープ株式会社 Dispositif émetteur de lumière, appareil d'affichage et équipement électronique
WO2012081536A1 (fr) * 2010-12-16 2012-06-21 シャープ株式会社 Dispositif électroluminescent, dispositif d'affichage, appareil électronique, et dispositif d'éclairage
CN107068897A (zh) * 2017-01-18 2017-08-18 京东方科技集团股份有限公司 一种顶发光型oled显示面板及显示装置
TWI803014B (zh) * 2021-10-07 2023-05-21 友達光電股份有限公司 顯示面板
EP4333600A3 (fr) * 2022-08-30 2024-05-29 Samsung Display Co., Ltd. Dispositif d'affichage

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Publication number Priority date Publication date Assignee Title
JP2003045659A (ja) * 2001-07-27 2003-02-14 Sony Corp 表示装置
JP2004022541A (ja) * 2002-06-12 2004-01-22 Eastman Kodak Co 有機発光ダイオード表示装置
JP2004079427A (ja) * 2002-08-21 2004-03-11 Seiko Epson Corp 発光装置及びその製造方法、並びに電子機器
JP2006171739A (ja) * 2004-12-10 2006-06-29 Samsung Sdi Co Ltd 有機電界発光素子および有機電界発光素子の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003045659A (ja) * 2001-07-27 2003-02-14 Sony Corp 表示装置
JP2004022541A (ja) * 2002-06-12 2004-01-22 Eastman Kodak Co 有機発光ダイオード表示装置
JP2004079427A (ja) * 2002-08-21 2004-03-11 Seiko Epson Corp 発光装置及びその製造方法、並びに電子機器
JP2006171739A (ja) * 2004-12-10 2006-06-29 Samsung Sdi Co Ltd 有機電界発光素子および有機電界発光素子の製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012046599A1 (fr) * 2010-10-06 2012-04-12 シャープ株式会社 Dispositif émetteur de lumière, appareil d'affichage et équipement électronique
WO2012081536A1 (fr) * 2010-12-16 2012-06-21 シャープ株式会社 Dispositif électroluminescent, dispositif d'affichage, appareil électronique, et dispositif d'éclairage
CN107068897A (zh) * 2017-01-18 2017-08-18 京东方科技集团股份有限公司 一种顶发光型oled显示面板及显示装置
TWI803014B (zh) * 2021-10-07 2023-05-21 友達光電股份有限公司 顯示面板
EP4333600A3 (fr) * 2022-08-30 2024-05-29 Samsung Display Co., Ltd. Dispositif d'affichage

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