WO2016082341A1 - 有机电致发光器件、其制备方法以及显示装置 - Google Patents
有机电致发光器件、其制备方法以及显示装置 Download PDFInfo
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- WO2016082341A1 WO2016082341A1 PCT/CN2015/072519 CN2015072519W WO2016082341A1 WO 2016082341 A1 WO2016082341 A1 WO 2016082341A1 CN 2015072519 W CN2015072519 W CN 2015072519W WO 2016082341 A1 WO2016082341 A1 WO 2016082341A1
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- electroluminescent device
- organic electroluminescent
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- 238000002360 preparation method Methods 0.000 title claims abstract 5
- 238000005401 electroluminescence Methods 0.000 title abstract description 8
- 239000010410 layer Substances 0.000 claims abstract description 92
- 239000002346 layers by function Substances 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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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
- H10K59/80—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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
-
- 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
- H10K50/82—Cathodes
- H10K50/828—Transparent cathodes, e.g. comprising thin metal 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
- H10K50/84—Passivation; Containers; Encapsulations
-
- 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
- H10K2102/302—Details of OLEDs of OLED structures
- H10K2102/3023—Direction of light emission
- H10K2102/3026—Top emission
Definitions
- the present disclosure relates to the field of electroluminescence, and in particular to an organic electroluminescent device, a method of fabricating the same, and a display device.
- Organic electroluminescence display technology is recognized as a promising flat panel display technology in the world. It has many advantages: (1) The organic material is used as raw material, and the material selection range is wide, and any color from blue light to red light can be realized. Display; (2) high luminous brightness, active illumination in all solid state; (3) low driving voltage; (4) wide viewing angle, up to 160 degrees; (5) fast response, 1000 times that of liquid crystal display; (6) Ultra-thin and low energy consumption.
- Organic electroluminescent display (OLED) technology has recently been widely used in mobile communication terminals, personal digital assistants (PDAs), palmtop computers, and the like.
- the core component of the organic electroluminescent display device is an organic electroluminescent device.
- the organic electroluminescent device can be classified into a bottom emission type and a top emission type in accordance with the manner of light extraction.
- FIG. 1 is a cross-sectional view of a top emission type organic electroluminescent device, which mainly includes a light transmitting cathode electrode layer 101, an organic functional layer 102, a light transmitting anode electrode layer 103, a reflective layer 104, a protective layer 105, and a dielectric layer from top to bottom.
- the crystal driving tube 108 is located between the dielectric layer 106 and the substrate 100.
- the organic electroluminescent device of this structure When the organic electroluminescent device of this structure operates, part of the light emission of the organic functional layer 102 is reflected by the light transmitting cathode electrode layer 101, the light emitting layer 102 itself, and the light transmitting anode electrode layer 103, in the light transmitting cathode electrode layer 101 and A microcavity resonance effect is generated between the light-transmitting anode electrode layers 103, so that the light emitted by the organic functional layer 102 forms a constructive dryness in the device involving destructive interference, and enhances light of a specific wavelength, such that light of different angles Strong difference, thus changing the viewing angle of the device small. That is to say, when viewing such an organic electroluminescent device from different angles, the microcavity resonance effect causes a change in the color of the light, that is, a color shift phenomenon.
- An object of the present disclosure is to provide an organic electroluminescence device, a method of fabricating the same, and a display device.
- An organic electroluminescent device of the present disclosure includes a substrate, a light transmissive anode formed on the substrate, an organic functional layer, and a light transmissive cathode, the organic functional layer being located between the anode and the cathode, A reflective layer is disposed on the substrate, wherein the reflective surface of the reflective layer for reflecting light has an undulating structure that protrudes toward the organic functional layer and is recessed toward the substrate.
- the relief structure comprises a plurality of relief units, the relief unit comprising at least one protrusion protruding toward the organic functional layer.
- the organic electroluminescent device of the present disclosure wherein the undulating unit includes two opposite sides each extending toward the organic functional layer, the opposite sides being joined together and forming a protrusion protruding toward the organic functional layer, One side of the protrusion and one side of the adjacent protrusion form a groove recessed toward the substrate.
- the organic electroluminescent device of the present disclosure wherein a distance H between a top of the protrusion and a bottom of an adjacent groove is between 1 nm and 1 ⁇ m, and a bottom width L of the protrusion is between 0.1 ⁇ m and 100 ⁇ m .
- the organic electroluminescent device of the present disclosure wherein a longitudinal section of the protrusion along a width direction of the bottom thereof and a longitudinal section of the groove along a width direction of the top thereof are triangular, semi-elliptical or trapezoidal.
- the organic electroluminescent device of the present disclosure wherein the material of the reflective layer is silver, copper, aluminum, magnesium or a metal alloy.
- the organic electroluminescent device of the present disclosure wherein a flat layer is provided on the substrate, and the flat layer covers the reflective layer.
- the flat layer includes a first portion under the reflective layer and a second portion above the reflective layer, the first portion being the same material as the second portion Or not the same.
- a display device of the present disclosure includes the organic electroluminescent device of the present disclosure.
- the method for preparing an organic electroluminescent device of the present disclosure comprises:
- a light transmissive anode, an organic functional layer, and a light transmissive cathode are formed on the second portion of the planar layer, the organic functional layer being located between the anode and the cathode.
- the technical solution of the present disclosure is directed to a color shift phenomenon of a top-emitting organic electroluminescent device caused by a microcavity effect, and a reflective layer including a relief structure protruding toward the organic functional layer and recessed toward the substrate is disposed on the substrate, the reflection Different regions of the reflective surface for reflecting light in the layer have different heights, so that the reflected light has different optical path lengths, and since the reflected light of different optical path lengths and the upwardly emitted light of the organic functional layer compensate each other, It can alleviate the color shift phenomenon at different angles caused by the microcavity effect.
- FIG. 1 is a schematic structural view of a prior art organic electroluminescent device
- FIG. 2 is a schematic view showing the structure of an organic electroluminescent device of the present disclosure.
- the organic electroluminescent device of the present disclosure comprises a substrate 2, a light-transmissive anode formed on the substrate 2, an organic functional layer for emitting light, a transparent cathode, and an organic functional layer 1 Between the anode and the cathode, the substrate 2 is provided with a reflective layer 3 for reflecting light.
- the reflective layer 3 is disposed between the organic functional layer 1 and the substrate 2, and has an organic surface on the reflective surface of the reflective layer 3 for reflecting light.
- the functional layer 1 protrudes and undulates toward the substrate 2.
- the organic electroluminescent device of the present disclosure starts to work, light is irradiated to the reflective layer 3 by the organic functional layer 1, since the reflective surface of the reflective layer 3 for reflecting light has a protrusion to the organic functional layer 1
- the undulating structure therefore, the light reflected by the reflective layer has different optical path lengths, and the reflected light of different optical path lengths and the upwardly emitted light of the organic functional layer compensate each other, thereby reducing the color shift of different angles caused by the microcavity effect. phenomenon.
- the organic electroluminescent device of the present disclosure wherein the relief structure comprises a plurality of relief units 10, and the relief unit 10 comprises at least one protrusion 20 protruding toward the organic functional layer 1.
- the plurality of undulating units 10 may be arranged periodically or non-periodically, and the plurality of undulating units 10 may be the same size or different in size.
- the organic electroluminescent device of the present disclosure is directed to a color shift phenomenon of a top-emitting organic electroluminescent device caused by a microcavity effect, and a reflective layer including a relief structure protruding toward the organic functional layer and recessed toward the substrate is disposed on the substrate.
- the reflective layer has different heights for different regions of the reflective surface for reflecting light, so that the reflected light has different optical path lengths, and the reflected light of different optical path lengths and the upwardly emitted light of the organic functional layer compensate each other. Therefore, the color shift phenomenon at different angles caused by the microcavity effect can be alleviated.
- the organic electroluminescent device of the present disclosure wherein the undulating unit 10 includes two opposite sides 11 extending toward the organic functional layer 1, and the opposite sides 11 are joined together and form a protrusion 20 protruding toward the organic functional layer 1, the protrusion 20 The one side 11 and the side of the adjacent protrusion form a recess 30 that is recessed toward the substrate 2.
- the first corner of the protrusion of the organic functional layer 1 formed by the opposite sides 11 of the undulation unit 10 is an angle, and the side 11 of the protrusion 20 and one side of the adjacent protrusion are formed toward the substrate 1
- the second corner of the recess is also an angle, and the angles of the first corner and the second corner may be the same or different.
- the organic electroluminescent device of the present disclosure wherein the distance H between the top of the protrusion 20 and the bottom of the adjacent groove 30 is between 1 nm and 1 ⁇ m, and the bottom width L of the protrusion 20 is between 0.1 ⁇ m and 100 ⁇ m.
- the organic electroluminescent device of the present disclosure wherein the longitudinal section of the protrusion 20 in the width direction of the bottom thereof and the longitudinal section of the groove 30 in the width direction of the top thereof are triangular.
- the longitudinal section of the protrusion along the width direction of the bottom thereof and the longitudinal section of the groove along the width direction of the top thereof may be semi-elliptical or trapezoidal.
- the organic electroluminescent device of the present disclosure wherein the material of the reflective layer 3 is silver, copper, aluminum, magnesium or a metal alloy.
- the organic electroluminescent device of the present disclosure in which a flat layer 5 is provided on the substrate 2, and the flat layer 5 covers the reflective layer 3.
- the flat layer 5 includes a first portion 32 under the reflective layer 3 and a second portion 31 above the reflective layer 3, the first portion 32 being the same or different from the material of the second portion 31 .
- the organic electroluminescent device of the present disclosure wherein the material used for the flat layer 5 may be SiO 2 , SiN x or a resin material or the like.
- a display device of the present disclosure includes the organic electroluminescent device of the present disclosure.
- the display device may be: an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like, or any product or component having a display function.
- the method for preparing an organic electroluminescent device of the present disclosure comprises:
- a light transmissive anode, an organic functional layer, and a light transmissive cathode are formed on the second portion of the planar layer, the organic functional layer being located between the anode and the cathode.
- different regions of the reflective surface of the reflective layer of the organic electroluminescent device of the present disclosure for reflecting light have different heights, and can provide reflected light of different optical path lengths, so that The light emitted upward from the organic functional layer compensates each other, thereby attenuating the color shift phenomenon at different angles caused by the microcavity effect.
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims (17)
- 一种有机电致发光器件,包括:基板,形成在所述基板上的透光的阳极、有机功能层、透光的阴极,所述有机功能层位于所述阳极和所述阴极之间,所述基板上设置有反射层,其中,所述反射层的用于反射光线的反射面上具有向所述有机功能层突出、向所述基板凹陷的起伏结构。
- 根据权利要求1所述的有机电致发光器件,其中,所述起伏结构包括多个起伏单元,所述起伏单元包括至少一个向所述有机功能层突出的突起。
- 根据权利要求2所述的有机电致发光器件,其中,所述起伏单元包括均向所述有机功能层延伸的两相对边,所述两相对边连接在一起并形成向所述有机功能层突出的突起,所述突起的一边与相邻突起的一边形成向所述基板凹陷的凹槽。
- 根据权利要求3所述的有机电致发光器件,其中,所述突起的顶部与相邻的凹槽的底部之间的距离在1nm-1μm之间,所述突起的底部宽度在0.1μm-100μm之间。
- 根据权利要求2所述的有机电致发光器件,其中,所述突起沿其底部宽度方向的纵截面以及所述凹槽沿其顶部宽度方向的纵截面为三角形、半椭圆形或梯形。
- 根据权利要求1所述的有机电致发光器件,其中,所述反射层的材料为银、铜、铝、镁或金属合金。
- 根据权利要求1-6任一项所述的有机电致发光器件,其中,所述基板上设置有平坦层,所述平坦层包覆所述反射层。
- 根据权利要求7所述的有机电致发光器件,其中,所述平坦层包括位于所述反射层下方的第一部分以及位于所述反射层上方的第二部分,所述第一部分与所述第二部分的材料相同或不相同。
- 一种显示装置,包括如权利要求1-8任一项所述的有机电致发光器件。
- 一种有机电致发光器件的制备方法,包括:在基板上形成第一平坦层膜层,然后用模板压印出具有高低起伏图案的平坦层的第一部分;在所述平坦层的第一部分上形成反射层,所述反射层的用于反射光线的反射面具有向上突出、向所述基板凹陷的起伏结构;在所述反射层上形成第二平坦层膜层,制得平坦层的第二部分;在所述平坦层的第二部分上形成透光的阳极、有机功能层、透光的阴极,所述有机功能层位于所述阳极和所述阴极之间。
- 根据权利要求10所述的制备方法,其中,所述起伏结构包括多个起伏单元,所述起伏单元包括至少一个向所述有机功能层突出的突起。
- 根据权利要求11所述的制备方法,其中,所述起伏单元包括均向所述有机功能层延伸的两相对边,所述两相对边连接在一起并形成向所述有机功能层突出的突起,所述突起的一边与相邻突起的一边形成向所述基板凹陷的凹槽。
- 根据权利要求12所述的制备方法,其中,所述突起的顶部与相邻的凹槽的底部之间的距离在1nm-1μm之间,所述突起的底部宽度在0.1μm-100μm之间。
- 根据权利要求11所述的制备方法,其中,所述突起沿其底部宽度方向的纵截面以及所述凹槽沿其顶部宽度方向的纵截面为三角形、半椭圆形或梯形。
- 根据权利要求10所述的制备方法,其中,所述反射层的材料为银、铜、铝、镁或金属合金。
- 根据权利要求10-15任一项所述的制备方法,其中,在所述基板上设置有平坦层,所述平坦层包覆所述反射层。
- 根据权利要求16所述的制备方法,其中,所述平坦层包括位于所述反射层下方的第一部分以及位于所述反射层上方的第二部分,所述第一部分与所述第二部分的材料相同或不相同。
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US14/763,129 US20160372711A1 (en) | 2014-11-26 | 2015-02-09 | Organic light-emitting device, method for manufacturing the same, and display device |
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CN104332561A (zh) * | 2014-11-26 | 2015-02-04 | 京东方科技集团股份有限公司 | 有机电致发光器件、其制备方法以及显示装置 |
CN104748053A (zh) | 2015-03-30 | 2015-07-01 | 京东方科技集团股份有限公司 | 光源及其制备方法、可裁切照明装置及其制备方法 |
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WO2022227055A1 (zh) | 2021-04-30 | 2022-11-03 | 京东方科技集团股份有限公司 | 显示基板及显示装置 |
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CN103022079A (zh) * | 2012-12-12 | 2013-04-03 | 京东方科技集团股份有限公司 | 阵列基板及其制备方法、有机发光二极管显示装置 |
CN104332561A (zh) * | 2014-11-26 | 2015-02-04 | 京东方科技集团股份有限公司 | 有机电致发光器件、其制备方法以及显示装置 |
CN204179113U (zh) * | 2014-11-26 | 2015-02-25 | 京东方科技集团股份有限公司 | 有机电致发光器件以及显示装置 |
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JP5288967B2 (ja) * | 2008-09-22 | 2013-09-11 | ユー・ディー・シー アイルランド リミテッド | 発光素子及びその製造方法、並びに該発光素子を備えるディスプレイ |
JP5217949B2 (ja) * | 2008-11-20 | 2013-06-19 | ソニー株式会社 | 反射板の製造方法および表示装置の製造方法 |
US8704257B2 (en) * | 2009-03-31 | 2014-04-22 | Epistar Corporation | Light-emitting element and the manufacturing method thereof |
US20110005008A1 (en) * | 2009-04-16 | 2011-01-13 | Schoots Harrie P | Vinyl acetate/ethylene (vae) copolymers for fabric finishing |
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CN101015232A (zh) * | 2004-09-30 | 2007-08-08 | 株式会社东芝 | 有机电致发光显示装置 |
CN103022079A (zh) * | 2012-12-12 | 2013-04-03 | 京东方科技集团股份有限公司 | 阵列基板及其制备方法、有机发光二极管显示装置 |
CN104332561A (zh) * | 2014-11-26 | 2015-02-04 | 京东方科技集团股份有限公司 | 有机电致发光器件、其制备方法以及显示装置 |
CN204179113U (zh) * | 2014-11-26 | 2015-02-25 | 京东方科技集团股份有限公司 | 有机电致发光器件以及显示装置 |
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CN104332561A (zh) | 2015-02-04 |
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