WO2015192480A1 - 有机水氧阻隔材料、oled显示装置及其制备方法 - Google Patents

有机水氧阻隔材料、oled显示装置及其制备方法 Download PDF

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WO2015192480A1
WO2015192480A1 PCT/CN2014/085837 CN2014085837W WO2015192480A1 WO 2015192480 A1 WO2015192480 A1 WO 2015192480A1 CN 2014085837 W CN2014085837 W CN 2014085837W WO 2015192480 A1 WO2015192480 A1 WO 2015192480A1
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oxygen barrier
water
light
layer
oled
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PCT/CN2014/085837
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English (en)
French (fr)
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吴海东
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京东方科技集团股份有限公司
鄂尔多斯市源盛光电有限责任公司
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Publication of WO2015192480A1 publication Critical patent/WO2015192480A1/zh

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    • C09D127/02Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
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    • C08G2261/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
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    • H10K59/875Arrangements for extracting light from the devices

Definitions

  • At least one embodiment of the present invention is directed to an organic water-oxygen barrier material, an OLED display device, and a method of fabricating the same. Background technique
  • OLED Organic Electroluminescence Display
  • the packaging technology of OLED display panel is a key process for improving the lifetime of OLED display devices.
  • the main reasons for affecting the lifetime of OLED display devices are: 1) Since the cathode of OLED display panel usually uses a metal with a lower work function, In the presence of H 2 0 and 0 2 , H 2 0 and 0 2 can react with metals to cause cathode bulging and device performance deterioration; 2) 0 2 itself is a triplet quencher, and the organic luminescent material is oxidized by 0 2 The formation of a carbonyl compound (black spot), which results in a significant decrease in luminescence quantum efficiency; 3) other organic functional materials in the OLED light-emitting layer may also be oxidized by 0 2 , resulting in deterioration of OLED display device performance. Therefore, there is a need to research and develop effective packaging techniques to block 3 ⁇ 40 and 0 2 .
  • the packaging method with better packaging effect is a glass frit (Frit) package, and the commonly used package structure is to directly set a light extraction layer on the surface of the OLED light emitting layer.
  • At least one embodiment of the present invention provides an organic water-oxygen barrier material, an OLED display device, and a method of fabricating the same, to prevent moisture and oxygen from entering the OLED light-emitting layer, thereby extending the service life of the OLED display device.
  • At least one embodiment of the present invention provides an organic water-oxygen barrier material comprising the following components by mass: 15-25% poly(p-nonylbenzene), 15-25% polyvinyl chloride, 5-15% acetone, Trichloroethylene 5-15%, pentyl acetate 10-20%, polyvinyl alcohol 5-15%, SiO 2 nanoparticles 0-5%, and organic solvent 8-12%.
  • At least one embodiment of the present invention provides an OLED display device having a water-oxygen barrier layer between the OLED light-emitting layer and the light extraction layer, the water-oxygen barrier layer being formed of the above-described organic water-oxygen barrier material.
  • At least one embodiment of the present invention further provides a method for fabricating an OLED display device, the method comprising: forming an OLED light-emitting layer on a backplane; forming a water-oxygen barrier layer on a light-emitting side of the OLED light-emitting layer; and a water-oxygen barrier layer The light exiting side forms a light extraction layer; and a package.
  • the water oxygen barrier layer is formed using the above organic water oxygen barrier material.
  • Figure 1 is a schematic view showing the scattering effect of SiO 2 nanoparticles on light
  • FIG. 2 is a schematic structural diagram of an OLED display panel according to an embodiment of the present invention.
  • Figure 3 is a schematic diagram showing the life test results of two OLED display panels.
  • 1 is a glass substrate
  • 2 is a back sheet
  • 3 is a glass frit
  • 4 is an anode ITO
  • 5 is an OLED light-emitting layer
  • 6 is a metal cathode
  • 7 is a water-oxygen barrier layer
  • 8 is a light extraction layer
  • 9 is a concave cover.
  • glass has a good barrier effect on water vapor and oxygen, but the barrier property of glass powder for water vapor and oxygen is much lower than that of glass, and for glass powder packaging, packaging process Microcracks and bubbles are easily generated, resulting in a decrease in water oxygen barrier properties.
  • water oxygen enters the interior of the OLED light-emitting layer, it can chemically react with the metal and organic materials in the OLED light-emitting layer, resulting in poor device performance and black spots. Therefore, Those skilled in the art desire to provide a display device that is capable of preventing moisture and oxygen from penetrating into the OLED luminescent layer.
  • At least one embodiment of the present invention provides an organic water-oxygen barrier material prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 15-25%, polyvinyl chloride 15-25%, acetone 5- 15%, 5-15% of trichloroethylene, 10-20% of pentyl acetate, 5-15% of polyvinyl alcohol, 0-5% of SiO 2 nanoparticles, and 8-12% of organic solvent.
  • the organic water-oxygen barrier material prepared by the above components has the advantages of high water-oxygen barrier property, wide source of raw materials, low cost and easy preparation.
  • the mass percentage of SiO 2 nanoparticles is 3-5%.
  • the organic solvent is isopropanol or ethyl acetate.
  • the SiO 2 nanoparticles have an average particle size of less than or equal to 50 nm, such as 30 nm.
  • the average particle diameter of the Si0 2 nanoparticles is within this range, and it is possible to ensure that the organic water-oxygen barrier material can be uniformly formed into a film.
  • the light extraction efficiency of the OLED light-emitting layer can also be improved.
  • the organic water-oxygen barrier material according to the embodiments of the present invention can be applied to various situations in which water oxygen is required to be blocked, including but not limited to application in an OLED display device, such as protection of an OLED light-emitting layer.
  • the present embodiment relates to an organic water-oxygen barrier material which is prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 20%, polyvinyl chloride 20%, acetone 10%, trichloroethylene 10%, acetic acid pentane Polyvinyl ester 15%, polyvinyl alcohol 10%, SiO 2 nanoparticles 3% and organic solvent isopropanol 10%.
  • the SiO 2 nanoparticles have an average particle diameter of 30 nm.
  • the present embodiment relates to an organic water-oxygen barrier material which is prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 15%, polyvinyl chloride 15%, acetone 5%, trichloroethylene 5%, acetic acid pentane 10% polyvinyl acetate, polyvinyl alcohol 5%, Si0 2 nanoparticles and an organic solvent 5% ethyl acetate 8%.
  • the SiO 2 nanoparticles have an average particle diameter of 40 nm.
  • the present embodiment relates to an organic water-oxygen barrier material which is prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 25%, polyvinyl chloride 25%, acetone 5%, trichloroethylene 5%, acetic acid pentane Gather Vinyl ester 15%, polyvinyl alcohol 10% SiO 2 nanoparticles 3% and organic solvent ethyl acetate 12%
  • the average particle diameter of the SiO 2 nanoparticles is 50 nm
  • the present embodiment relates to an organic water-oxygen barrier material which is prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 15%, polyvinyl chloride 25%, acetone 5%, trichloroethylene 15%, pentane acetate Polyvinyl ester 10%, polyvinyl alcohol 15% SiO 2 nanoparticles 4% and organic solvent ethyl acetate 8%
  • the average particle diameter of the SiO 2 nanoparticles is 30 nm
  • the present embodiment relates to an organic water-oxygen barrier material which is prepared from a component comprising the following mass percentages: poly(p-nonylbenzene) 25%, polyvinyl chloride 15%, acetone 15%, trichloroethylene 5%, acetic acid pentane 20% polyvinyl ester, 10% polyvinyl alcohol and 10% organic solvent isopropanol
  • the average particle diameter of the SiO 2 nanoparticles may be 45 nm. It is to be noted that the above embodiments are merely illustrative, but the embodiments of the present invention are not limited thereto.
  • some impurities may be included in the composition of the organic water-oxygen barrier material.
  • the average particle diameter of the SiO 2 nanoparticles may be less than 30 as long as it can function to uniformly form an organic water-oxygen barrier material or to scatter light to improve light extraction efficiency.
  • the SiO 2 nanoparticles may be in the form of a powder.
  • At least one embodiment of the present invention provides an OLED display device by adding a water-oxygen barrier layer on the light-emitting side of the OLED light-emitting layer (including but not limited to The organic water-oxygen barrier material is formed) to improve the life of the OLED light-emitting layer.
  • At least one embodiment of the present invention provides an OLED display device having a water oxygen barrier layer between the OLED light emitting layer and the light extraction layer.
  • the water-oxygen barrier layer may be formed using the above-described organic water-oxygen barrier material.
  • the water oxygen barrier layer can also be formed using materials known to those skilled in the art. Those skilled in the art will appreciate that any layered structure having barrier properties for water vapor can be used to practice the invention.
  • the embodiments of the present invention do not improve other structures of the OLED display device (such as a backplane, etc.), and therefore, the other structures may follow the existing structure.
  • the backplane in the OLED display device of the embodiment of the present invention may include a substrate, a driving circuit formed on the substrate, a circuit protection layer, and the like;
  • the substrate may be a glass substrate, a plastic substrate, a quartz substrate or the like.
  • embodiments of the invention are not limited thereto.
  • the back sheet of the present invention may include a glass substrate at the bottom, and a structure of a driving circuit, a circuit protection layer, and the like formed on the glass substrate. Since the water-oxygen resistance scheme is only adopted by the method of glass powder encapsulation, the water-oxygen barrier property of the device is further enhanced, and the lifetime of the OLED light-emitting layer is improved.
  • the light extraction layer is a film formed by vapor deposition of an organic or inorganic material, and the thickness may be 40-70 nm, and the composition and formation process thereof may be performed by a technique known to those skilled in the art.
  • the embodiment of the invention is not limited.
  • the OLED display device further includes an electrode disposed on a light emitting side of the OLED light emitting layer, and the water oxygen barrier layer may be located between the electrode and the light extraction layer.
  • the water oxygen barrier layer has a thickness of 15 to 20 ⁇ m.
  • the water-oxygen barrier layer is required to have a good light transmittance, which does not cause too much light loss.
  • a metal material having a high refractive index and extinction coefficient is generally used, which makes it easy for light to be totally reflected at the interface of the metal cathode, resulting in a large amount of light loss.
  • the water-oxygen barrier layer may select a high-refractive-index material, for example, the SiO 2 nanoparticles may be uniformly dispersed in the water-oxygen barrier layer, thereby further improving the light extraction efficiency and color of the OLED light-emitting layer. Uniformity. Due to the presence of Si0 2 nanoparticles, light scatters when passing through the spherical SiO 2 nanoparticles when it is emitted, which can improve the light extraction efficiency and improve the color uniformity (the scattering effect of the SiO 2 nanoparticles on the light is shown in the figure). 1 ) .
  • the average particle diameter of the SiO 2 nanoparticles in the water-oxygen barrier material according to the embodiment of the present invention is less than or equal to 50 nm, for example, 30 nm.
  • the average particle diameter of the Si0 2 nanoparticles is within this range, and it is possible to ensure that the organic water-oxygen barrier material can form a film uniformly and improve light extraction efficiency.
  • the embodiment relates to an OLED display device including an OLED display panel as shown in FIG. 2, the display panel including a back plate 2, an anode IT0 4, an OLED light emitting layer 5, a metal cathode 6, a water oxygen barrier layer 7, and a light
  • the layer 8 and the concave cover 9 are taken out.
  • the back sheet 2 includes a glass substrate 1, which may also be a plastic substrate or a quartz substrate.
  • the anode ITO 4 is located between the OLED light-emitting layer 5 and the back sheet 2, that is, the bottom of the OLED light-emitting layer 5 (top of the back sheet), and the metal cathode 6 is located between the OLED light-emitting layer 5 and the light extraction layer 8.
  • the back plate 2 and the concave cover plate 9 are melt-sealed by the glass powder 3 to form a hermetic seal
  • the OLED light-emitting layer 5, the anode ITO 4, and the metal cathode 6 are housed in the sealed cavity.
  • the light extraction layer 8 is coated on the surface of the OLED light-emitting layer 5, and a water-oxygen barrier layer 7 is disposed between the OLED light-emitting layer 5 and the light extraction layer 8, and the water-oxygen barrier layer 7 is located outside the metal cathode 6.
  • the water-oxygen barrier layer 7 may be a water-oxygen barrier film having a thickness of 15 ⁇ m; and the water-like barrier layer 7 is made of the organic water-oxygen barrier material of the embodiment 1 on the metal cathode. form.
  • cathode and anode in this embodiment are merely examples and are not intended to specifically limit the scope of the invention.
  • the present embodiment provides an OLED display device which differs from Embodiment 6 only in that: the water-oxygen barrier layer is formed of the organic water-oxygen barrier material described in Embodiment 2 and has a thickness of 20 ⁇ m.
  • the present embodiment provides an OLED display device which differs from Embodiment 6 only in that: the water-oxygen barrier layer is formed of the organic water-oxygen barrier material described in Embodiment 3, and has a thickness of 16 ⁇ m.
  • the present embodiment provides an OLED display device which differs from Embodiment 6 only in that: the water-oxygen barrier layer is formed of the organic water-oxygen barrier material described in Embodiment 4, and has a thickness of 18 ⁇ m.
  • the present embodiment provides an OLED display device which differs from Embodiment 6 only in that: the water-oxygen barrier layer is formed of the organic water-oxygen barrier material described in Embodiment 5, and has a thickness of 15 ⁇ m.
  • the embodiment of the invention also introduces a water-oxygen barrier layer, which further prevents water vapor and oxygen from entering the OLED light-emitting layer, and prolongs The service life of OLED display devices.
  • SiO 2 nanoparticles are added to the water-oxygen barrier layer of the embodiment of the invention to ensure high light emission efficiency and color uniformity.
  • the embodiment of the invention has the advantages of simple structure, low production cost, remarkable effect of improving water and oxygen barrier performance, and extremely high generalizability.
  • At least one embodiment of the present invention further provides a method of fabricating an OLED display device, the method comprising: forming an OLED light-emitting layer on a backplane; and forming a light-emitting side of the OLED light-emitting layer Forming a water-absorbing barrier layer; forming a light extraction layer on the light-emitting side of the water-oxygen barrier layer; and encapsulating.
  • forming the water-oxygen barrier layer on the light-emitting side of the OLED light-emitting layer may include: coating or depositing an organic water-oxygen barrier material on the surface of the OLED light-emitting layer; and curing the organic water-oxygen barrier material.
  • the above-mentioned organic water-oxygen barrier material may be coated or deposited in the form of a water-oxygen barrier layer on the light-emitting side of the OLED light-emitting layer, but the embodiment of the present invention is not limited thereto, as long as The method of using can form a water-oxygen barrier layer having good water-oxygen barrier properties.
  • the organic water-oxygen barrier material is formed on the water-oxygen barrier film on the light-emitting side of the OLED light-emitting layer
  • a uniform coating method can be used, and the uniform coating can be performed by a technique known to those skilled in the art, and the present invention is implemented.
  • the example is not limited to this.
  • the curing can be carried out by drying or heating.
  • embodiments of the invention are not limited thereto.
  • the light extraction layer may have a thickness of 40-70 nm, which is a thin film formed by vapor deposition of an organic or inorganic material, and the composition and formation process thereof may be performed by techniques known to those skilled in the art.
  • the embodiment of the invention is not limited.
  • the preparation method of the OLED display device described in Embodiment 6 may include the steps as described below.
  • the material obtained in the step (2) is uniformly coated on the light-emitting side of the OLED light-emitting layer by a spin coating method to form a water-oxygen barrier film.
  • a spin coating method to form a water-oxygen barrier film.
  • Other methods of forming the water-oxygen barrier layer such as, but not limited to, deposition, are equally applicable to the embodiments of the present invention, as long as the water-oxygen barrier film can be formed by the method.
  • step (3) the backing plate is placed in a vacuum oven at 80 ° C for 30 min, and after the water-oxygen barrier film is dried, a water-oxygen barrier layer is formed, which has a thickness of about 15 ⁇ m.
  • Other curing means such as, but not limited to, other drying means or other heating means are equally applicable to the embodiment of the present invention, as long as the water oxygen barrier layer can be formed by this means.
  • the method of preparing the display device of Embodiment 7 may include the steps described below.
  • the material obtained in the step (2) is uniformly coated on the light-emitting side of the OLED light-emitting layer by a spin coating method to form a water-oxygen barrier film.
  • step (3) the backing plate is placed in a vacuum oven at 90 ° C for 20 min, and after the water-oxygen barrier film is dried, a water-oxygen barrier layer is formed, which has a thickness of about 20 ⁇ m.
  • the method of preparing the display device of Embodiment 8 may include the steps described below.
  • the material obtained in the step (2) is uniformly coated on the light-emitting side of the OLED light-emitting layer by a spin coating method to form a water-oxygen barrier film.
  • step (3) the backing plate is placed in a vacuum oven at 70 ° C for 40 min, and after the water-oxygen barrier film is dried, a water-oxygen barrier layer is formed, which has a thickness of about 16 ⁇ m.
  • the method of preparing the display device of Embodiment 9 may include the steps described below.
  • step (3) The material obtained in the step (2) is uniformly coated on the light-emitting side of the OLED light-emitting layer by a spin coating method to form a water-oxygen barrier film.
  • step (3) the back sheet is placed in a vacuum oven at 70 ° C for 40 min, and after the water-oxygen barrier film is dried, a water-oxygen barrier layer is formed, the thickness of which is about 18 ⁇ m.
  • the method of preparing the display device of Embodiment 10 may include the steps described below.
  • the material obtained in the step (2) is uniformly coated on the light-emitting side of the OLED light-emitting layer by a spin coating method to form a water-oxygen barrier film.
  • step (3) the back sheet is placed in a vacuum oven at 80 ° C for 30 minutes, and after the water-oxygen barrier film is dried, a water-oxygen barrier layer is formed, which has a thickness of about 15 ⁇ m.
  • the water oxygen barrier layer may be outside the metal electrode (e.g., cathode) and located inside the light extraction layer. If the water oxygen barrier layer is located outside the light extraction layer, total reflection may occur to reduce the light extraction rate.
  • the amount of Si0 2 nanoparticles added should not be excessive, otherwise it will affect the formation of water and oxygen barrier layer and reduce the water and oxygen barrier properties of the water and oxygen barrier layer.
  • the particle size of the Si0 2 nanoparticles may be less than or equal to 50 nm, and the particle size is too large to affect the formation of the water and oxygen barrier layer and the water and oxygen barrier properties.
  • Device I was prepared as described in Example 11. Device ⁇
  • a light extraction layer having a thickness of 50 nm is directly prepared.
  • Test Method The water permeability and lifetime of Device I and Device II were tested by the accelerated aging test method known in the industry, and the differences in device characteristics were compared. The results are as follows.
  • test results show that the embodiment of the present invention can effectively prevent the water vapor and oxygen in the display device from infiltrating into the OLED light-emitting layer by providing a water-oxygen barrier layer on the surface of the OLED light-emitting layer except the bottom surface of the back surface plate;
  • the OLED display panel of the barrier layer achieves a significant effect of delaying device aging compared to the OLED display panel without the water-oxygen barrier layer (as shown in FIG. 3).

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Abstract

一种有机水氧阻隔材料、OLED显示装置及其制备方法,该有机水氧阻隔材料由包括如下质量百分比的组分制得:聚对二甲苯15-25%、聚氯乙烯15-25%、丙酮5-15%、三氯乙烯5-15%、乙酸戊聚乙烯酯10-20%、聚乙烯醇5-15%、SiO2纳米颗粒0-5%和有机溶剂8-12%。该有机水氧阻隔材料制备的水氧阻隔层设置于OLED的发光层(5)与光取出层(8)之间时,可以防止水汽和氧气进入OLED发光层(5)内,从而延长OLED发光层(5)的使用寿命。

Description

有机水氧阻隔材料、 OLED显示装置及其制备方法 技术领域
本发明的至少一个实施例涉及一种有机水氧阻隔材料、 OLED显示装置 及其制备方法。 背景技术
有机电致发光显示器件 ( Organic Electroluminescence Display, OLED ) 因具有高亮度、 宽视角、 主动发光、 高对比度、 超薄便携等优点而成为近年 来研究和开发的新型平板显示器件。
OLED显示面板的封装技术是提高 OLED显示器件寿命的关键制程, 这 是因为影响 OLED显示器件的寿命的主要原因有: 1 ) 由于 OLED显示面板 的阴极通常釆用的是功函数较低的金属, 在有 H20和 02时, H20和 02可与 金属反应而导致阴极隆起及器件性能变差; 2 ) 02本身就是三线态猝灭剂, 同时有机发光材料被 02氧化生成羰基化合物(黑斑), 这可导致发光量子效 率显著降低; 3 ) OLED发光层中其它有机功能材料也可能被 02氧化, 导致 OLED显示器件性能恶化。因此,需要研究和开发有效的封装技术来阻隔 ¾0 和 02
目前, 封装效果较好的封装方式为玻璃粉( Frit )封装, 通常釆用的封装 结构是直接在 OLED发光层表面设置光取出层。 发明内容
本发明的至少一个实施例提供了一种有机水氧阻隔材料、 OLED显示装 置及其制备方法, 以防止水汽和氧气进入 OLED发光层内, 从而延长 OLED 显示装置的使用寿命。
本发明的至少一个实施例提供了一种有机水氧阻隔材料, 其包括如下质 量百分比的组分: 聚对二曱苯 15-25%、 聚氯乙烯 15-25%、 丙酮 5-15%、 三 氯乙烯 5-15%、 乙酸戊聚乙烯酯 10-20%、 聚乙烯醇 5-15%、 Si02纳米颗粒 0-5%和有机溶剂 8-12%。 本发明的至少一个实施例提供了一种 0LED显示装置,其在 0LED发光 层与光取出层之间设有水氧阻隔层, 所述水氧阻隔层釆用上述有机水氧阻隔 材料形成。
本发明的至少一个实施例进一步提供了一种 OLED显示装置的制备方 法, 该方法包括: 在背板上形成 OLED发光层; 在 OLED发光层的出光侧形 成水氧阻隔层; 在水氧阻隔层的出光侧形成光取出层; 以及封装。 所述水氧 阻隔层釆用上述有机水氧阻隔材料形成。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例的附图作 简单地介绍,显而易见地,下面描述中的附图仅仅涉及本发明的一些实施例, 而非对本发明的限制。
图 1为 Si02纳米颗粒对光线的散射作用示意图;
图 2为本发明实施例提供的 OLED显示面板结构示意图;
图 3为两种 OLED显示面板的寿命测试结果示意图。
附图标记:
1为玻璃基板、 2为背板、 3为玻璃粉、 4为阳极 ITO、 5为 OLED发光 层、 6为金属阴极、 7为水氧阻隔层、 8为光取出层、 9为凹型盖板。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例的附图, 对本发明实施例的技术方案进行清楚、 完整地描述。显然, 所描述的实施例是本发明的一部分实施例, 而不是全部的实施例。 基于所描 述的本发明的实施例, 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
本申请的发明人注意到, 玻璃对于水蒸气和氧气有很好的隔离效果, 但 由于玻璃粉对于水蒸气和氧气的阻隔性能远低于玻璃的阻隔性能, 而且对于 玻璃粉封装方式, 封装过程中容易产生微裂纹和气泡, 从而导致水氧阻隔性 的下降。 当水氧进入到 OLED发光层内部后, 可与 OLED发光层内的金属和 有机材料发生化学反应,从而导致器件性能变差, 并导致黑点的出现。 因此, 本领域技术人员希望提供一种能够阻止水汽和氧气渗入 OLED发光层的显示 装置。
本发明的至少一个实施例提供了一种有机水氧阻隔材料, 其由包括如下 质量百分比的组分制得:聚对二曱苯 15-25%、聚氯乙烯 15-25%、丙酮 5-15%、 三氯乙烯 5-15%、 乙酸戊聚乙烯酯 10-20%、 聚乙烯醇 5-15%、 Si02纳米颗粒 0-5%和有机溶剂 8-12%。 釆用上述组分制作的有机水氧阻隔材料具备极高的 水氧阻隔性、 原料来源广泛、 价格低廉且易于制备的优点。
本发明实施例的百分比如无特殊说明均为质量百分比。
在不同实施例中, Si02纳米颗粒的质量百分比为 3-5%。
在不同实施例中, 有机溶剂为异丙醇或醋酸乙酯。
在不同实施例中, 所述 Si02纳米颗粒的平均粒径小于或等于 50nm, 例 如为 30nm。 Si02纳米颗粒的平均粒径在该范围内, 能够确保有机水氧阻隔 材料可以均匀成膜。 同时, 当其应用在部分领域, 如 OLED显示装置中阻隔 水氧进入 OLED发光层时, 还能提高 OLED发光层的光取出效率。
本发明实施例所述的有机水氧阻隔材料可应用于多种需要阻隔水氧的情 形, 其包括但并不局限于应用于 OLED显示装置中, 例如对 OLED发光层的 保护。
实施例 1
本实施例涉及一种有机水氧阻隔材料, 其由包括如下质量百分比的组分 制得: 聚对二曱苯 20%、 聚氯乙烯 20%、 丙酮 10%、 三氯乙烯 10%、 乙酸戊 聚乙烯酯 15%、 聚乙烯醇 10%、 Si02纳米颗粒 3%和有机溶剂异丙醇 10%。
在本实施例的一个示例中, Si02纳米颗粒的平均粒径为 30nm。
实施例 2
本实施例涉及一种有机水氧阻隔材料, 其由包括如下质量百分比的组分 制得: 聚对二曱苯 15%、 聚氯乙烯 15%、 丙酮 5%、 三氯乙烯 5%、 乙酸戊聚 乙烯酯 10%、 聚乙烯醇 5%、 Si02纳米颗粒 5%和有机溶剂醋酸乙酯 8%。
在本实施例的一个示例中, Si02纳米颗粒的平均粒径为 40nm。
实施例 3
本实施例涉及一种有机水氧阻隔材料, 其由包括如下质量百分比的组分 制得: 聚对二曱苯 25%、 聚氯乙烯 25%、 丙酮 5%、 三氯乙烯 5%、 乙酸戊聚 乙烯酯 15%、 聚乙烯醇 10% Si02纳米颗粒 3%和有机溶剂醋酸乙酯 12% 在本实施的一个示例中, Si02纳米颗粒的平均粒径为 50nm
实施例 4
本实施例涉及一种有机水氧阻隔材料, 其由包括如下质量百分比的组分 制得: 聚对二曱苯 15%、 聚氯乙烯 25%、 丙酮 5%、 三氯乙烯 15%、 乙酸戊 聚乙烯酯 10%、 聚乙烯醇 15% Si02纳米颗粒 4%和有机溶剂醋酸乙酯 8% 在本实施例的一个示例中, Si02纳米颗粒的平均粒径为 30nm
实施例 5
本实施例涉及一种有机水氧阻隔材料, 其由包括如下质量百分比的组分 制得: 聚对二曱苯 25%、 聚氯乙烯 15%、 丙酮 15%、 三氯乙烯 5%、 乙酸戊 聚乙烯酯 20%、 聚乙烯醇 10%和有机溶剂异丙醇 10%
在本实施例的一个示例中, Si02纳米颗粒的平均粒径可以为 45nm 需要注意的是, 上述实施例仅是示例性的说明, 但本发明实施例并不局 限于此。例如,有机水氧阻隔材料的组分中还可以包括一些杂质。例如, Si02 纳米颗粒的平均粒径也可以小于 30 只要能够起到使有机水氧阻隔材料 均匀成膜或者使光线发生散射从而提高光取出效率的作用即可。 此外, Si02 纳米颗粒可以为粉末状。
为了增强 OLED发光层对水氧阻隔的能力, 本发明的至少一个实施例提 供了一种 OLED显示装置,其通过在 OLED发光层的出光侧增加水氧阻隔层 (包括但并不局限于由上述有机水氧阻隔材料形成), 实现提高 OLED发光 层的寿命。
本发明的至少一个实施例提供了一种 OLED显示装置,其在 OLED发光 层与光取出层之间设有水氧阻隔层。
在一个实施例中,所述水氧阻隔层可以釆用上述有机水氧阻隔材料形成。 在一个实施例中, 所述水氧阻隔层还可以釆用本领域技术人员所知的材 料来形成。 本领域技术人员可以理解的是, 只要具备阻隔水氧性能的层状结 构均可以用于实现本发明。
本发明实施例对 OLED显示装置的其它结构(如背板等)并无改进, 因 此, 所述其他结构可沿用已有的结构。 例如, 本发明实施例的 OLED显示装 置中的背板可以包括基板、 在基板上形成的驱动电路、 电路保护层等; 所述 的基板可以为玻璃基板、塑料基板或石英基板等。但本发明实施例不限于此。 例如, 本发明的背板可以包括底部的玻璃基板, 以及在玻璃基板上形成的驱 动电路、 电路保护层等结构。 由于仅仅通过玻璃粉封装的方式对于水氧的阻 方案, 从而进一步增强了器件的水氧阻隔性, 提高了 OLED发光层的寿命。
本发明实施例提供的 OLED显示装置中, 光取出层是一层有机或无机材 料蒸镀形成的薄膜, 厚度可以为 40-70nm, 其组成及形成工艺可以釆用本领 域技术人员所知的技术, 本发明实施例不作限定。
在一个实施例中,所述的 OLED显示装置还包括设于 OLED发光层出光 侧的电极, 所述水氧阻隔层可以位于所述电极和所述光取出层之间。
在一个实施例中, 所述水氧阻隔层的厚度为 15~20μπι。
对于顶发光的 OLED显示装置,要求该水氧阻隔层具有很好的光透过率, 这样不会导致太多的光损失。 另外, 由于顶发光 OLED发光层的阴极, 一般 釆用具有较高的折射率和消光系数的金属材料, 这使得光线容易在金属阴极 的界面处发生全反射, 而造成大量的光损失。 因此, 为了提高发光层的光取 出效率, 水氧阻隔层可以选择高折射率材料, 例如可以在水氧阻隔层中均匀 分散 Si02纳米颗粒,从而进一步提高 OLED发光层的光取出效率并改善色彩 均匀性。 由于 Si02纳米颗粒的存在, 光在射出时, 穿过球形 Si02纳米颗粒 时会发生散射, 从而可以提高光取出效率和改善色彩均勾性(Si02纳米颗粒 对光线的散射作用示意图参见图 1 ) 。
本发明实施例所述的水氧阻隔材料中的 Si02纳米颗粒的平均粒径小于 或等于 50nm, 例如 30nm。 Si02纳米颗粒的平均粒径在该范围内, 能够确保 有机水氧阻隔材料可以均匀成膜和提高光取出效率。
实施例 6
本实施例涉及一种 OLED显示装置,其包括如图 2所示的 OLED显示面 板, 该显示面板包括背板 2、 阳极 IT0 4、 OLED发光层 5、 金属阴极 6、 水 氧阻隔层 7、 光取出层 8及凹型盖板 9。 背板 2包括玻璃基板 1, 所述玻璃基 板也可以为塑料基板或石英基板。 阳极 ITO 4位于 OLED发光层 5和背板 2 之间, 即 OLED发光层 5底部(背板顶部 ), 金属阴极 6位于 OLED发光层 5和光取出层 8之间。 背板 2与凹型盖板 9通过玻璃粉 3熔融封装形成密闭 容腔, 将 OLED发光层 5和阳极 ITO 4、金属阴极 6收容于所述密闭容腔内。 光取出层 8包覆在 OLED发光层 5表面,在 OLED发光层 5于光取出层 8之 间还设有水氧阻隔层 7, 该水氧阻隔层 7位于金属阴极 6的外侧。
在本实施例的一个示例中, 水氧阻隔层 7可以为一层水氧阻隔膜, 其厚 度为 15μπι; 并且, 水样阻隔层 7由实施例 1所述有机水氧阻隔材料在金属 阴极上形成。
本实施例中的阴极和阳极仅为示例, 不作为对本发明保护范围的具体限 制。
实施例 7
本实施例提供一种 OLED显示装置,其与实施例 6相比,区别点仅在于: 水氧阻隔层由实施例 2所述的有机水氧阻隔材料形成, 其厚度为 20μπι。
实施例 8
本实施例提供一种 OLED显示装置,其与实施例 6相比,区别点仅在于: 水氧阻隔层由实施例 3所述的有机水氧阻隔材料形成, 其厚度为 16μπι。
实施例 9
本实施例提供一种 OLED显示装置,其与实施例 6相比,区别点仅在于: 水氧阻隔层由实施例 4所述的有机水氧阻隔材料形成, 其厚度为 18μπι。
实施例 10
本实施例提供一种 OLED显示装置,其与实施例 6相比,区别点仅在于: 水氧阻隔层由实施例 5所述的有机水氧阻隔材料形成, 其厚度为 15μπι。
本发明实施例提供的 OLED显示装置具有如下有益效果:
1 ) 除全玻璃封装对水汽和氧气良好的阻隔性能阻止水氧进入密闭容腔 夕卜,本发明实施例还引入了水氧阻隔层,进一步阻止了水汽和氧气进入 OLED 发光层内, 延长了 OLED显示装置的使用寿命。
2 )本发明实施例的水氧阻隔层中进一步加入了 Si02纳米颗粒, 保证了 高光出射效率和色彩均匀性。
3 )本发明实施例结构简单、生产成本低, 且提升水氧阻隔性能的效果显 著, 具有极高的可推广性。
本发明的至少一个实施例进一步提供了一种 OLED显示装置的制备方 法, 该方法包括: 在背板上形成 OLED发光层; 在 OLED发光层的出光侧形 成水氧阻隔层; 在水氧阻隔层的出光侧形成光取出层; 以及封装。
在一个实施例中, 在 OLED发光层的出光侧形成水氧阻隔层可以包括: 将有机水氧阻隔材料涂覆或沉积在 OLED发光层表面; 对所述有机水氧阻隔 材料进行固化。
本领域技术人员可以理解的是, 上述有机水氧阻隔材料在 OLED发光层 的出光侧形成水氧阻隔层时可以釆用涂覆或沉积等的方式, 但本发明实施例 不限于此, 只要所釆用的方式可以形成具备良好水氧阻隔性能的水氧阻隔层 即可。
例如, 上述有机水氧阻隔材料形成在 OLED发光层出光侧的水氧阻隔膜 时可釆用均匀涂覆的方式,所述均匀涂覆可釆用本领域技术人员所知的技术, 本发明实施例不限于此。
在不同实施例中, 所述固化可以釆用干燥或加热等方式进行。 但本发明 实施例不限于此。
在一个实施例中, 所述光取出层的厚度可以为 40-70nm, 其是一层有机 或无机材料蒸镀形成的薄膜, 其组成及形成工艺可以釆用本领域技术人员所 知的技术, 本发明实施例不作限定。
实施例 11
实施例 6所述 OLED显示装置的制备方法, 可以包括如下所述的步骤。
( 1 )在背板上形成待封装的 OLED发光层。
( 2 )将制备有机水氧阻隔材料的原料(除 Si02纳米颗粒 )混合均匀并 在搅拌机上搅拌 40min, 加入 Si02纳米颗粒, 搅拌混合均匀。
( 3 )将步骤 ( 2 )所得材料, 通过旋转涂覆的方法均匀涂覆在 OLED发 光层的出光侧, 形成水氧阻隔膜。 其它形成水氧阻隔层的方法例如包括但不 限于沉积的方式同样适用于本发明实施例, 只要通过该方法可以形成水氧阻 隔膜即可。
( 4 )完成步骤(3 )后, 将背板置于 80°C真空烘箱中 30min, 待水氧阻 隔膜烘干后形成水氧阻隔层, 其厚度约为 15μπι。 其它固化方式例如包括但 不限于其它干燥方式或其它加热等方式同样适用于本发明实施例, 只要通过 该方式可以形成水氧阻隔层即可。
( 5 ) 完成步骤(4 )后, 制备厚度为 50nm的光取出层。 (6)在盖板上涂覆玻璃粉,与背板对盒后进行激光照射,完成封装即可。 实施例 12
实施例 7所述显示装置的制备方法, 可以包括如下所述的步骤。
( 1 )在背板上形成待封装的 OLED发光层, 备用。
(2)将制备有机水氧阻隔材料的原料 (除 Si02纳米颗粒 )混合均匀并 在搅拌机上搅拌 30min, 加入 Si02纳米颗粒, 搅拌混合均匀。
( 3 )将步骤 ( 2 )所得材料, 通过旋转涂覆的方法均匀涂覆在 OLED发 光层的出光侧, 形成水氧阻隔膜。
(4)完成步骤(3)后, 将背板置于 90°C真空烘箱中 20min, 待水氧阻 隔膜烘干后形成水氧阻隔层, 其厚度约为 20μπι。
(5) 完成步骤(4)后, 制备厚度为 70nm的光取出层。
(6)在盖板上涂覆玻璃粉,与背板对盒后进行激光照射,完成封装即可。 实施例 13
实施例 8所述显示装置的制备方法, 可以包括如下所述的步骤。
( 1 )在背板上形成待封装的 OLED发光层, 备用。
(2)将制备有机水氧阻隔材料的原料(除 Si02纳米颗粒)混合均匀并 在搅拌机上搅拌 60min, 加入 Si02纳米颗粒, 搅拌混合均匀。
( 3 )将步骤 ( 2 )所得材料, 通过旋转涂覆的方法均匀涂覆在 OLED发 光层的出光侧, 形成水氧阻隔膜。
(4)完成步骤(3)后, 将背板置于 70°C真空烘箱中 40min, 待水氧阻 隔膜烘干后形成水氧阻隔层, 其厚度约为 16μπι。
(5) 完成步骤(4)后, 制备厚度为 60nm的光取出层。
(6)在盖板上涂覆玻璃粉,与背板对盒后进行激光照射,完成封装即可。 实施例 14
实施例 9所述显示装置的制备方法, 可以包括如下所述的步骤。
( 1 )在背板上形成待封装的 OLED发光层, 备用。
(2)将制备有机水氧阻隔材料的原料(除 Si02纳米颗粒)混合均匀并 在搅拌机上搅拌 50min, 加入 Si02纳米颗粒, 搅拌混合均匀。
( 3 )将步骤 ( 2 )所得材料, 通过旋转涂覆的方法均匀涂覆在 OLED发 光层的出光侧, 形成水氧阻隔膜。 (4)完成步骤(3)后, 将背板置于 70°C真空烘箱中 40min, 待水氧阻 隔膜烘干后形成水氧阻隔层, 其厚度约为 18μπι。
(5) 完成步骤(4)后, 制备厚度为 40nm的光取出层。
(6)在盖板上涂覆玻璃粉,与背板对盒后进行激光照射,完成封装即可。 实施例 15
实施例 10所述显示装置的制备方法, 可以包括如下所述的步骤。
( 1 )在背板上形成待封装的 OLED发光层, 备用。
( 2 ) 将制备有机水氧阻隔材料的原料混合均匀并在搅拌机上搅拌 40min, 搅拌混合均匀。
(3)将步骤 ( 2 )所得材料, 通过旋转涂覆的方法均匀涂覆在 OLED发 光层的出光侧, 形成水氧阻隔膜。
(4)完成步骤(3)后, 将背板置于 80°C真空烘箱中 30min, 待水氧阻 隔膜烘干后形成水氧阻隔层, 其厚度约为 15μπι。
(5) 完成步骤(4)后, 制备厚度为 50nm的光取出层。
( 6 )在盖板上涂覆玻璃粉,与背板对盒后进行激光照射,完成封装即可。 在上述制备方法中, 需要注意以下几点。
1)水氧阻隔层可以处于金属电极(如阴极)外侧, 位于光取出层内侧。 若水氧阻隔层位于光取出层外侧, 则可能发生全反射而降低出光率。
2)要先形成水氧阻隔层, 然后再进行玻璃粉封装。 这两个步骤不能同时 进行。
3)在进行玻璃粉封装时,避免让激光照射到水氧阻隔层,从而避免激光 对水氧阻隔层造成破坏。
4) Si02纳米颗粒的加入量不宜过量, 否则影响水氧阻隔层的形成和降 低水氧阻隔层的水氧阻隔特性。
5 ) Si02纳米颗粒的粒径可以小于或等于 50nm, 粒径太大可对水氧阻隔 层的形成和水氧阻隔性能造成影响。
试验例 1
试验对象:
器件 I
按实施例 11所述的方法制备器件 I。 器件 Π
( 1 )在背板上形成 OLED发光层, 备用。
( 2 ) 完成步骤( 1 )后, 直接制备厚度为 50nm的光取出层。
( 3 )盖板上涂覆玻璃粉, 对盒后进行激光照射, 完成封装即得。
试验方法: 通过业内已知加速老化测试方法对器件 I和器件 II的水透过 率和寿命进行测试, 对比器件特性差异, 结果如下所述。
试验结果 I
Figure imgf000011_0001
本试验结果表明, 本发明实施例通过在 OLED发光层的除紧贴背板的底 面外的表面设置水氧阻隔层, 能够有效阻止显示器件中水汽和氧气渗入 OLED的发光层; 设置了水氧阻隔层的 OLED显示面板较未设置水氧阻隔层 的 OLED显示面板取得了显著的延緩器件老化的效果(如图 3所示) 。
本发明实施例 12-15制备的器件也获得了与器件 I相似的试验结果。 上述实施例中的实施方案可以进一步组合或者替换, 且实施例仅仅是对 本发明的优选实施例进行描述, 并非对本发明的构思和范围进行限定, 在不 脱离本发明设计思想的前提下, 本领域中专业技术人员对本发明的技术方案 作出的各种变化和改进, 均属于本发明的保护范围。
本申请要求于 2014年 6月 16日递交的中国专利申请第 201410268704.7 号的优先权, 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、一种有机水氧阻隔材料, 由包括如下质量百分比的组分制得: 聚对二 曱苯 15-25%、 聚氯乙烯 15-25%、 丙酮 5-15%、 三氯乙烯 5-15%、 乙酸戊聚 乙烯酯 10-20%、 聚乙烯醇 5-15%、 Si02纳米颗粒 0-5%和有机溶剂 8-12%。
2、 根据权利要求 1所述的有机水氧阻隔材料, 其中, 所述 Si02纳米颗 粒的质量百分比为 3-5%。
3、根据权利要求 1或 2所述的有机水氧阻隔材料, 其中, 所述有机溶剂 为异丙醇或醋酸乙酯。
4、 根据权利要求 1-3任一所述的有机水氧阻隔材料, 其中: 所述 Si02 纳米颗粒的平均粒径小于或等于 50nm。
5、 一种 OLED显示装置, 包括: 在 OLED发光层与光取出层之间设置 的水氧阻隔层, 所述水氧阻隔层釆用如权利要求 1-4任一项所述的有机水氧 阻隔材料形成。
6、 根据权利要求 5所述的 OLED显示装置, 还包括: 设于所述 OLED 发光层出光侧的电极, 所述水氧阻隔层位于所述电极和所述光取出层之间。
7、 根据权利要求 5或 6所述的 OLED显示装置, 其中, 所述水氧阻隔 层的厚度为 15~20μπι。
8、 一种 OLED显示装置的制备方法, 包括:
在背板上形成 OLED发光层;
在 OLED发光层的出光侧形成水氧阻隔层, 其中, 所述水氧阻隔层釆用 如权利要求 1-4任一项所述的有机水氧阻隔材料形成;
在水氧阻隔层的出光侧形成光取出层;
封装。
9、 根据权利要求 8所述的制备方法, 其中, 在 OLED发光层的出光侧 形成水氧阻隔层包括:
将所述有机水氧阻隔材料涂覆或沉积在所述 OLED发光层表面; 对所述有机水氧阻隔材料进行固化。
10、 根据权利要求 9所述的制备方法, 其中, 所述固化釆用干燥或加热 的方式进行。
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Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
CN104051671B (zh) * 2014-06-16 2016-03-16 京东方科技集团股份有限公司 一种oled显示装置及其制备方法
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CN105374948B (zh) * 2015-12-13 2017-05-10 重庆信德电子有限公司 Oled器件封装结构的制备方法
CN105428549B (zh) * 2015-12-13 2017-05-10 重庆信德电子有限公司 Oled器件的封装材料
CN109148728B (zh) * 2018-08-31 2019-10-29 昆山国显光电有限公司 一种显示面板及显示装置
US11349099B2 (en) 2019-01-25 2022-05-31 The Regents Of The University Of Michigan Method of fabricating a light emitting device having a polymer film with a specified surface rouggness
CN113517413A (zh) * 2021-06-29 2021-10-19 广东聚科照明股份有限公司 一种有机发光二极管器件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1678151A (zh) * 2004-03-30 2005-10-05 株式会社丰田自动织机 有机电致发光器件和其制造方法
CN101183707A (zh) * 2006-11-14 2008-05-21 中华映管股份有限公司 有机电致发光元件及其制作方法
CN102024841A (zh) * 2009-09-16 2011-04-20 上海广电电子股份有限公司 一种顶发射有机电致发光显示元件
US20130334504A1 (en) * 2008-08-19 2013-12-19 Plextronics, Inc. Organic light emitting diode lighting devices
CN103489888A (zh) * 2012-06-12 2014-01-01 三星显示有限公司 光学薄膜以及包含该光学薄膜的有机发光显示设备
CN203895509U (zh) * 2014-06-16 2014-10-22 京东方科技集团股份有限公司 一种oled显示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7715893B2 (en) * 2003-12-05 2010-05-11 Dexcom, Inc. Calibration techniques for a continuous analyte sensor
KR100637147B1 (ko) * 2004-02-17 2006-10-23 삼성에스디아이 주식회사 박막의 밀봉부를 갖는 유기 전계 발광 표시장치, 그제조방법 및 막 형성장치
KR100861434B1 (ko) 2004-03-29 2008-10-02 미쓰이 가가쿠 가부시키가이샤 신규 화합물 및 그 화합물을 사용한 유기 엘렉트로닉스소자
KR100719554B1 (ko) 2005-07-06 2007-05-17 삼성에스디아이 주식회사 평판 디스플레이 장치 및 그 제조방법
EP2232611B1 (en) 2008-01-14 2017-11-01 Merck Patent GmbH Barrier coated substrate and electro-optical device
EP2409848A1 (en) * 2010-07-22 2012-01-25 DSM IP Assets B.V. Process for the preparation of a multilayer structure comprising a substrate, a crystalline organic barrier layer, and a printed pattern; and products obtained therefrom
JPWO2012102390A1 (ja) 2011-01-28 2014-07-03 三菱化学株式会社 光電変換素子、太陽電池及び太陽電池モジュール
US20130302627A1 (en) * 2011-01-31 2013-11-14 3M Innovative Properties Company Vapor-deposited coating for barrier films and methods of making and using the same
US9541701B2 (en) 2011-05-13 2017-01-10 3M Innovative Properties Company Back-lit transmissive display having variable index light extraction layer
CN203466226U (zh) * 2013-09-29 2014-03-05 京东方科技集团股份有限公司 有机电致发光器件的封装结构、显示装置
CN104051671B (zh) 2014-06-16 2016-03-16 京东方科技集团股份有限公司 一种oled显示装置及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1678151A (zh) * 2004-03-30 2005-10-05 株式会社丰田自动织机 有机电致发光器件和其制造方法
CN101183707A (zh) * 2006-11-14 2008-05-21 中华映管股份有限公司 有机电致发光元件及其制作方法
US20130334504A1 (en) * 2008-08-19 2013-12-19 Plextronics, Inc. Organic light emitting diode lighting devices
CN102024841A (zh) * 2009-09-16 2011-04-20 上海广电电子股份有限公司 一种顶发射有机电致发光显示元件
CN103489888A (zh) * 2012-06-12 2014-01-01 三星显示有限公司 光学薄膜以及包含该光学薄膜的有机发光显示设备
CN203895509U (zh) * 2014-06-16 2014-10-22 京东方科技集团股份有限公司 一种oled显示装置

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