WO2019051988A1 - Film mince optique, panneau d'affichage électroluminescent organique et son procédé de fabrication - Google Patents

Film mince optique, panneau d'affichage électroluminescent organique et son procédé de fabrication Download PDF

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Publication number
WO2019051988A1
WO2019051988A1 PCT/CN2017/110894 CN2017110894W WO2019051988A1 WO 2019051988 A1 WO2019051988 A1 WO 2019051988A1 CN 2017110894 W CN2017110894 W CN 2017110894W WO 2019051988 A1 WO2019051988 A1 WO 2019051988A1
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WO
WIPO (PCT)
Prior art keywords
organic electroluminescent
grooves
display panel
thin film
optical film
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Application number
PCT/CN2017/110894
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English (en)
Chinese (zh)
Inventor
许杰
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Publication of WO2019051988A1 publication Critical patent/WO2019051988A1/fr

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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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • 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
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations

Definitions

  • the invention relates to a liquid crystal display panel technology, in particular to an optical film, an organic electroluminescence display panel and a manufacturing method thereof.
  • LCD liquid crystal display
  • OLED organic light emitting display
  • an LCD device includes a liquid crystal panel including an upper substrate (a color filter (CF) substrate) and a lower substrate (a thin film transistor array (TFT) substrate) and a liquid crystal layer between the upper substrate and the lower substrate ( LC).
  • the liquid crystal layer is driven by an electric field generated between the pixel electrode and the common electrode to display an image.
  • the OLED device includes an organic light emitting diode including an anode, a cathode, and an organic light emitting layer between the anode and the cathode. In an organic light emitting diode, holes and electrons from the anode and the cathode, respectively, are combined such that light is emitted from the organic light emitting layer to display an image.
  • AMOLED Active-matrix organic light emitting diode
  • AMOLED Active-matrix organic light emitting diode
  • ⁇ /4 polarizer and linear polarizer to eliminate the influence of external natural light on AMOLED.
  • it can avoid the influence of external natural light on AMOLED, it also leads to organic electroluminescence. Nearly 50% of the device's self-illumination is lost.
  • the present invention provides an optical film, an organic electroluminescence display panel, and a method of fabricating the same, thereby reducing the influence of natural light on the organic electroluminescent device and the loss of self-luminescence of the organic electroluminescent device.
  • the present invention provides an optical film comprising a transparent film body having a plurality of grooves disposed on one surface of the film body and protrusions formed between adjacent grooves.
  • the array of grooves is arranged to form a grid-like structure.
  • the cross-sectional shape of the protrusion is a rectangle, an arc or a triangle.
  • the film body is made of a metal material or a ceramic material.
  • the groove has a width of 20-50 nm and a depth of 30-120 nm.
  • the protrusion has a width of 10-20 nm.
  • the present invention also provides an organic electroluminescence display panel comprising an organic electroluminescence device and an encapsulation layer disposed on the organic electroluminescence device, further comprising the optical film disposed on the encapsulation layer away from the organic electricity On one side surface of the light-emitting device, the groove is disposed opposite to the sub-pixel.
  • the invention also provides a method for fabricating an organic electroluminescence display panel. After the encapsulation layer is formed, a transparent film is formed on a surface of the encapsulation layer facing away from the organic electroluminescent device;
  • an optical film having a plurality of grooves is formed, the grooves being disposed opposite to the sub-pixels.
  • the transparent film has a thickness of 50 to 150 nm.
  • the array of grooves is arranged to form a grid-like structure.
  • the present invention provides a groove on the film body, and replaces the existing polarizer by the optical film, so that natural light is projected into the groove and then annihilated by multiple reflections to cause light loss, thereby reducing natural light.
  • the effect on the organic electroluminescent device also reduces the loss of self-luminescence of the organic electroluminescent device, and also reduces the production cost.
  • Figure 1 is a plan view of an optical film of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 3 is a schematic structural view of an organic electroluminescence display panel of the present invention.
  • FIG. 4 is a schematic structural view of an organic electroluminescence display device with a touch screen according to the present invention.
  • Figure 5 is a schematic view showing the formation of a transparent film on the encapsulation layer of the present invention.
  • Figure 6 is a schematic view of the transparent film after the present invention is patterned
  • Figure 7 is a schematic view of the natural light of the present invention reflected in a groove
  • Figure 8 is a schematic illustration of the self-luminous emission of the OLED of the present invention.
  • an optical film of the present invention comprises a transparent film body 1.
  • the film body 1 is provided with a plurality of grooves 3 on one side surface thereof, and a convex portion is formed between adjacent grooves 3.
  • the orthographic shape of the groove 3 may be rectangular or square, depending on the shape of the sub-pixel; the array of grooves 3 is arranged to form a grid-like structure; the cross section of the protrusion 2
  • the shape is a rectangle, an arc or a triangle, which is not specifically limited herein;
  • the cross-sectional shape of the groove 3 may be a rectangle, an arc, an inverted trapezoid or other shape, and if the section of the groove 3 is a rectangle, the bottom of the groove 3
  • the joint with the surrounding groove wall may be a circular transition surface.
  • the film body 1 may be made of a metal material or a ceramic material, for example, the metal material is ruthenium, osmium or calcium, and the ceramic material is a polyoxide.
  • the film body 1 has a thickness of 50-150 nm, the groove 3 has a width of 20-50 nm, and a depth of 30-120 nm; and the protrusion 2 has a width of 10-20 nm.
  • the reflection coefficient of the film body 1 is larger than the projection coefficient.
  • This structure mainly applies the optical black hole effect, so that the external natural light is irradiated onto the optical film, as shown in FIG. Multiple reflections cause the natural light loss of the outside world to be annihilated. If some natural light can still be emitted from the structure after multiple reflections, and because of the design of the pattern (the groove on the film body), the light emitted is diffusely reflected, and the effect on the self-luminescence of the OLED is negligible. However, the self-luminous OLED can be emitted through the film body 1 (as shown in FIG. 8).
  • the present invention discloses an organic electroluminescence display panel using the above optical film, comprising an organic electroluminescent layer 41 and an encapsulation layer 42 disposed on the organic electroluminescent layer 41, and an optical film.
  • the optical film 5 is disposed on a side of the encapsulating layer 42 facing away from the organic electroluminescent layer 41, wherein the optical film comprises a transparent film body 1, and the film body 1 is provided with a plurality of recesses on one side surface thereof a groove 3, a protrusion 2 is formed between adjacent grooves 3, in particular, a front projection of the groove 3
  • the shape of the shadow may be a rectangle or a square, depending on the shape of the sub-pixel; the array of grooves 3 is arranged to form a grid-like structure; the cross-sectional shape of the protrusion 2 is a rectangle, an arc or a triangle.
  • the cross-sectional shape of the groove 3 may be a rectangle, an arc, an inverted trapezoid or other shapes. If the cross section of the groove 3 is a rectangle, the joint of the bottom of the groove 3 and the surrounding groove wall may be an arc. Transition surface.
  • the groove 3 is disposed opposite to the sub-pixel, and the opening direction of the groove 3 faces away from the encapsulation layer 42.
  • the above organic electroluminescence display panel further includes a rigid substrate 43, a flexible substrate 44 sequentially disposed on the rigid substrate 43, an array substrate layer 45, and a top electrode (not shown).
  • the organic electroluminescent layer 41 is disposed between the array substrate layer 45 and the top electrode.
  • the array substrate layer 45 includes a buffer layer, an active layer, a gate insulating layer, a gate layer, an interlayer insulating layer, a source/drain, a flat layer, a bottom electrode, and a pixel defining layer which are sequentially formed on the flexible substrate 44.
  • the present invention is not limited thereto.
  • the structure of the array substrate layer 45 may be an array substrate layer for an OLED in the prior art, which is not specifically limited herein.
  • the organic electroluminescent layer 41 includes a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer, which are sequentially disposed from the bottom electrode to the top electrode.
  • the organic electroluminescent layer 41 is an organic electroluminescent device structure used in an OLED display panel in the prior art, and is not specifically limited herein.
  • each sub-pixel is spaced between the pixel defining layers, that is, the position of the ridge 2 of the film body 1 can correspond to the position of the pixel defining layer, so that each groove 3 is one-to-one with the sub-pixel.
  • the sub-pixels referred to herein include sub-pixels for displaying colors such as RGB.
  • the film body 1 may be made of a metal material or a ceramic material, for example, the metal material is ruthenium, osmium or calcium, and the ceramic material is a polyoxide.
  • the film body 1 has a thickness of 50-150 nm, the groove 3 has a width of 20-50 nm, and a depth of 30-120 nm; and the protrusion 2 has a width of 10-20 nm.
  • the manufacturing method of the organic electroluminescent display panel comprises the following steps:
  • a transparent film is formed on the surface of the encapsulation layer 42 facing away from the organic electroluminescent layer 41; specifically, the surface of the encapsulation layer 42 is formed by evaporation or sputtering.
  • a transparent film shown in Figure 5 having a thickness of 50-150 nm is used.
  • an optical film 5 having a plurality of grooves 3 (shown in FIG. 6) is formed.
  • the patterning may be performed by etching, such as a photolithography process, and the grooves 3 and The light-emitting areas of the electroluminescent layer 41 are oppositely disposed.
  • the grooves 3 are arranged in an array to form a grid-like structure, and each of the grooves 3 has a one-to-one correspondence with the sub-pixels.
  • the groove 3 has a width of 20-50 nm and a depth of 30-120 nm; and the protrusion 2 has a width of 10-20 nm.
  • the shape of the groove 3 may be a rectangle or a square, depending on the shape of the sub-pixel; the groove 3 is arranged in an array to form a grid-like structure; if the section of the groove 3 is a rectangle, the bottom of the groove 3
  • the joint with the surrounding groove wall may be a circular arc transition surface; the cross-sectional shape of the protrusion 2 is a rectangle, an arc or a triangle, which is not specifically limited herein.
  • the optical film may be made of a metal material or a ceramic material, for example, the metal material is ruthenium, osmium or calcium, and the ceramic material is a polyoxide.
  • the encapsulating layer 42 and the following regions are produced by the prior art, and are not specifically limited herein.
  • the organic electroluminescence display panel of the present invention when the organic electroluminescence display panel of the present invention is fabricated into a display device having a touch panel, after applying an adhesive 6 on the optical film 5, the touch panel 7 is passed through the adhesive 6 and the organic electro-electricity. The light emitting display panels are bonded together, and then the cover glass 8 is assembled on the touch screen 7.
  • the optical film of the invention can not only eliminate the influence of external natural light on the OLED device, but also does not affect the light emitted by the OLED itself.
  • the thickness of the OLED device can be reduced by about 100 ⁇ m, the OLED device can be made thinner, and the OLED device can be more resistant to bending, and the flexible OLED design can be realized.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un film mince optique (5), comprenant un corps de film mince transparent (1), une surface latérale du corps de film mince (1) comprenant plusieurs rainures (3), et une saillie (2) étant formée entre des rainures adjacentes (3). L'invention concerne un panneau d'affichage électroluminescent organique, comprenant un dispositif électroluminescent organique et une couche d'encapsulation (42) disposée sur le dispositif électroluminescent organique, et comprenant en outre le film mince optique (5), le film mince optique (5) étant disposé sur une surface latérale, à l'opposé du dispositif électroluminescent organique, de la couche d'encapsulation (42), et les rainures (3) sont disposées en regard d'une zone électroluminescente du dispositif électroluminescent organique. La présente concerne un procédé de fabrication d'un panneau d'affichage électroluminescent organique. Les rainures (3) sont disposées sur le corps de film mince (1), et un polariseur existant est remplacé par le film mince optique, de telle sorte que la lumière naturelle est projetée dans les rainures (3) et est ensuite annihilée en raison de la perte de lumière provoquée par de multiples réflexions, réduisant ainsi la perte de lumière émise par un dispositif électroluminescent organique lui-même, tout en réduisant également l'influence de la lumière naturelle sur le dispositif électroluminescent organique, et réduisant en outre les coûts de production.
PCT/CN2017/110894 2017-09-12 2017-11-14 Film mince optique, panneau d'affichage électroluminescent organique et son procédé de fabrication WO2019051988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710816266.7A CN107611279B (zh) 2017-09-12 2017-09-12 光学薄膜、有机电致发光显示面板及其制作方法
CN201710816266.7 2017-09-12

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Publication Number Publication Date
WO2019051988A1 true WO2019051988A1 (fr) 2019-03-21

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WO (1) WO2019051988A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109164530B (zh) * 2018-09-29 2021-11-16 广州国显科技有限公司 显示面板及显示装置
CN109411514B (zh) * 2018-09-29 2020-12-11 云谷（固安）科技有限公司 显示面板及显示装置
CN109411621B (zh) * 2018-09-29 2022-02-22 广州国显科技有限公司 显示面板及显示装置
CN110071149B (zh) * 2019-04-15 2021-05-18 昆山工研院新型平板显示技术中心有限公司 显示面板及显示装置
CN112151693A (zh) 2020-09-27 2020-12-29 京东方科技集团股份有限公司 封装结构、显示面板及显示装置

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US20100182551A1 (en) * 2009-01-21 2010-07-22 Toppan Printing Co., Ltd. Anti-Glare Film
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CN206330084U (zh) * 2016-11-15 2017-07-14 茗翔科技股份有限公司 具有沟槽阵列的光学元件及其光源装置

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KR100795811B1 (ko) * 2006-10-24 2008-01-21 삼성에스디아이 주식회사 편광자 및 그를 포함하는 유기 발광 표시 장치
JP4539759B2 (ja) * 2007-10-01 2010-09-08 オムロン株式会社 反射防止シート、表示素子及びディスプレイ装置
JP6105577B2 (ja) * 2012-06-22 2017-03-29 シャープ株式会社 反射防止構造体及び表示装置
CN103336328B (zh) * 2013-07-12 2016-12-28 南昌欧菲光学技术有限公司 偏光片组件及显示设备
KR102082783B1 (ko) * 2013-07-23 2020-03-02 삼성디스플레이 주식회사 와이어 그리드 편광판 및 이를 구비하는 유기 발광 디스플레이 장치

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Publication number Priority date Publication date Assignee Title
CN101802657A (zh) * 2007-09-13 2010-08-11 株式会社普利司通 显示器用光学滤波器、具备该光学滤波器的显示器及等离子体显示面板
US20100182551A1 (en) * 2009-01-21 2010-07-22 Toppan Printing Co., Ltd. Anti-Glare Film
US20120170126A1 (en) * 2009-08-05 2012-07-05 Sharp Kabushiki Kaisha Tabular Member And Structure With Observation Port
CN104395783A (zh) * 2012-06-22 2015-03-04 夏普株式会社 防反射结构体和显示装置
US20170104183A1 (en) * 2015-10-13 2017-04-13 Boe Technology Group Co., Ltd. Waterproof and anti-reflective flexible oled apparatus and method for manufacturing the same
CN206330084U (zh) * 2016-11-15 2017-07-14 茗翔科技股份有限公司 具有沟槽阵列的光学元件及其光源装置

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CN107611279B (zh) 2019-11-22

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