CN105742327B - 一种oled显示装置及其制备方法 - Google Patents
一种oled显示装置及其制备方法 Download PDFInfo
- Publication number
- CN105742327B CN105742327B CN201610086268.0A CN201610086268A CN105742327B CN 105742327 B CN105742327 B CN 105742327B CN 201610086268 A CN201610086268 A CN 201610086268A CN 105742327 B CN105742327 B CN 105742327B
- Authority
- CN
- China
- Prior art keywords
- film
- ethyl cellulose
- singlet oxygen
- ethylcellulose
- oled display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 64
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 64
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 64
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 64
- 239000010408 film Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 44
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000010409 thin film Substances 0.000 claims abstract description 22
- -1 OLED device Substances 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 229920000052 poly(p-xylylene) Polymers 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 206010013786 Dry skin Diseases 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 238000005698 Diels-Alder reaction Methods 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 235000021466 carotenoid Nutrition 0.000 claims description 3
- 150000001747 carotenoids Chemical class 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 claims description 3
- 239000003205 fragrance Substances 0.000 claims description 3
- 125000001072 heteroaryl group Chemical group 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 3
- 150000002989 phenols Chemical class 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 3
- 150000003568 thioethers Chemical class 0.000 claims description 3
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims 1
- 238000001291 vacuum drying Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 51
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 20
- 239000001301 oxygen Substances 0.000 abstract description 20
- 230000004888 barrier function Effects 0.000 abstract description 12
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 239000011575 calcium Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 238000005538 encapsulation Methods 0.000 description 8
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical group ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- OENHQHLEOONYIE-UKMVMLAPSA-N all-trans beta-carotene Natural products CC=1CCCC(C)(C)C=1/C=C/C(/C)=C/C=C/C(/C)=C/C=C/C=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C OENHQHLEOONYIE-UKMVMLAPSA-N 0.000 description 4
- 239000011648 beta-carotene Substances 0.000 description 4
- 235000013734 beta-carotene Nutrition 0.000 description 4
- TUPZEYHYWIEDIH-WAIFQNFQSA-N beta-carotene Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1=C(C)CCCC1(C)C)C=CC=C(/C)C=CC2=CCCCC2(C)C TUPZEYHYWIEDIH-WAIFQNFQSA-N 0.000 description 4
- 229960002747 betacarotene Drugs 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 235000010980 cellulose Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229940014800 succinic anhydride Drugs 0.000 description 4
- OENHQHLEOONYIE-JLTXGRSLSA-N β-Carotene Chemical compound CC=1CCCC(C)(C)C=1\C=C\C(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C OENHQHLEOONYIE-JLTXGRSLSA-N 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
-
- 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
- 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
- H10K59/874—Passivation; Containers; Encapsulations including getter material or desiccant
-
- 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
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
-
- 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
- H10K50/844—Encapsulations
-
- 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
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
-
- 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
-
- 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
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12044—OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
本发明涉及一种OLED显示装置及其制备方法。所述OLED显示装置包括自下而上的基体、OLED器件、薄膜内层、乙基纤维素层、薄膜外层。本发明通过在现在薄膜封装的基础上,增加疏水性的乙基纤维素层(内部溶解有光敏材料和单线态氧受体),能够起到阻隔水汽,吸收氧气的作用,从而提升器件的寿命。
Description
技术领域
本发明涉及一种OLED显示装置及其制备方法,属于OLED封装技术领域。
背景技术
研究表明,空气中的水汽和氧气等成分对OLED的寿命影响很大,其原因主要是做阴极的这些金属如铝、镁、钙等比较活波,易与渗透进来的水汽发生反应;另外,水汽还会与空穴传输层以及电子传输层(ETL)发生化学反应,引起器件失效。因此,对OLED进行有效封装,使器件的各功能层与大气中的水汽、氧气等成分隔开,就可以大大延长器件寿命。但之前报道的薄膜封装包括无机膜封装,有机膜封装,无机-有机膜复合封装等等多种工艺,都不能做到100%阻隔水汽和氧气。如何提供一种OLED封装方法,可有效起到阻隔水汽,吸收氧气的作用显得格外重要。
发明内容
本发明的目的是提供一种OLED显示装置及其制备方法。通过在薄膜封装基础上增加疏水性的乙基纤维素层(内部溶解有机光敏材料和单线态氧受体材料),可有效起到阻隔水汽,吸收氧气的作用,从而提升器件的寿命。
为了实现上述目的,本发明采用如下技术方案:
一种OLED显示装置,包括自下而上的基体、OLED器件、薄膜内层、乙基纤维素层、薄膜外层。
本发明所述OLED显示装置中,所述乙基纤维素层包括有机光敏材料、单线态氧受体材料、乙基纤维素。所述有机光敏材料、单线态氧受体材料、乙基纤维素的摩尔比为1-3:1-3:2-4;优选比例为2:2:3。研究中发现乙基纤维素层的组成与配比对于OLED显示装置的封装影响较大,既要保证阻隔一定水汽,又要确保能够吸收氧气,对乙基纤维素层的材料组成和具体用量比例提出更为精确的要求。通过大量实验验证,在上述组成以特定比例制作时,所得乙基纤维素层能够较好的实现阻隔水汽,吸收氧气的作用,更有利于提升器件的寿命。
本发明所述OLED显示装置中,所述乙基纤维素层还可包括烯基琥珀酸酐(ASA)。
本发明所述OLED显示装置中,所述有机光敏材料选自大Π共轭有机分子与金属组成的配合物(如金属卟啉、金属酞菁)、玫瑰红、荧光黄、丫啶红、亚甲基蓝中的一种或多种。
本发明所述OLED显示装置中,所述单线态氧受体材料选自可与单烯烃反应的物质,或者选自与链状、环状、芳香或杂环芳香型共轭π键发生Diels-AlDer型反应的物质,或者选自与带有N、O或S等给电子杂原子活泼双键反应的物质,或者选自与类胡萝卜素、胺类、酚类、硫醚、杂环类化合物发生较复杂的反应的物质。优选地,所述单线态氧受体材料选自β-胡萝卜素。
本发明所述OLED显示装置中,所述薄膜内层是由聚对二甲苯薄膜制得;所述薄膜外层是由聚对二甲苯薄膜制得。
本发明还提供一种OLED显示装置的制备方法,包括如下步骤:
1)在基体上制作OLED器件,对OLED器件形成薄膜内层,并封装;
2)在薄膜内层表面形成乙基纤维素层,并封装;
3)在乙基纤维素层表面形成薄膜外层,并封装。
本发明所述的OLED显示装置的制备方法中,所述乙基纤维素层由如下方法制得:
(1)将乙基纤维素(EC)置于溶剂中搅拌使其溶解,再加入有机光敏材料和单线态氧受体材料,混合均匀,静置,待气泡消失;
(2)将上步骤所得混合液均匀的涂在薄膜内层上,自然干燥,烘干,形成乙基纤维素层。
其中,所述步骤(1)中,所述溶剂为三氯甲烷。
其中,所述步骤(1)中,还可加入烯基琥珀酸酐。
其中,所述步骤(2)中,所述混合液涂在薄膜内层上,自然干燥24小时后,转移到真空烘箱80℃干燥,形成乙基纤维素层。
本发明通过在现在薄膜封装的基础上,增加疏水性的乙基纤维素层(内部溶解有机光敏材料和单线态氧受体材料),当氧气透过有机薄膜进来,光照激发的光敏染料分子就会将渗透进来的氧分子敏化成单线态氧,此单线态氧分子与受体分子反应而被消耗掉,就不会有氧气透过封装薄膜,以达到阻隔水汽,吸收氧气的作用,从而提升器件的寿命。
附图说明
图1为本发明实施例1所述OLED显示装置的结构示意图。
图2为Ca电学测试***的结构图。
图3为Ca电学测试中对比例1与实施例1的Ca层1/R随时间变化的归一化曲线图。
图4为Ca电学测试中对比例1与实施例1的在测试后的主视图。
图中:1、基体;2、OLED器件;3、薄膜内层;4、乙基纤维素层;5、薄膜外层。
具体实施方式
以下实施例用于说明本发明,但不用来限制本发明的范围。
本发明提供一种OLED显示装置,包括自下而上的基体、OLED器件、薄膜内层、乙基纤维素层、薄膜外层。通过在薄膜内层上增加含有有机光敏材料和单线态氧受体的疏水性乙基纤维素层,使OLED显示装置具有阻隔水汽,吸收氧气的功效,从而提升器件的寿命。
所述乙基纤维素为不溶于水但溶于有机溶剂的非离子型纤维素醚,其结构如下:
所述乙基纤维素具有热稳定性好的特点。在燃烧时,其灰分极低,能生成坚韧薄膜;而在低温时,仍能保持挠曲性,无毒,有极强的抗生物性能和代谢惰性。乙基纤维素的具体特点如下:
1.不易燃烧。
2.热稳定性好,有优良的热塑性、
3.对日光不变色。
4.柔韧性好。
5.介电性好。
6.优良的耐碱性,耐弱酸性。
7.防老化性能好。
8.耐盐、耐寒性、耐吸湿性好。
9.对化学品稳定,长期储存不变质。
10.可与许多树脂配伍,与所有的增塑剂有良好的配伍性
11.在强碱性环境和受热条件下易变色。
本发明在乙基纤维素中加入有机光敏材料、单线态氧受体材料,所制得的乙基纤维素层可有效阻隔水汽,吸收氧气。所述乙基纤维素层至少包括有机光敏材料、单线态氧受体材料、乙基纤维素;优选有机光敏材料、单线态氧受体材料、乙基纤维素以摩尔比为2:2:3混合制备。
为了进一步提高乙基纤维素层的强度,强化封装效果,还可在乙基纤维素中加入适量的烯基琥珀酸酐(ASA)。
所述有机光敏材料选自大Π共轭有机分子与金属组成的配合物(如金属卟啉、金属酞菁)、玫瑰红、荧光黄、丫啶红、亚甲基蓝中的一种或多种。
所述单线态氧受体材料选自可与单烯烃反应的物质,或者选自与链状、环状、芳香或杂环芳香型共轭π键发生Diels-AlDer型反应的物质;或者选自与带有N、O或S等给电子杂原子的活泼双键反应的物质;或者选自与类胡萝卜素、胺类、酚类、硫醚、杂环类化合物发生较复杂的反应的物质。优选地,所述单线态氧受体材料选自β-胡萝卜素。
本发明所述OLED装置工作时,当从薄膜外层渗透进来的氧气和水汽遇到乙基纤维素层时,由于乙基纤维素膜的疏水性,水汽被有效阻隔;同时在光照作用下,激发的有机光敏材料就会将渗透进来的氧分子敏化成单线态氧,此单线态氧分子可与单线态氧受体材料反应,进而被消耗掉,由此实现阻隔水汽,吸收氧气,提升器件寿命的效果。
其中,光敏化反应如下:
S+hv→1S*
1S*→3S*
3S*+O2→1O2(单线态氧);
单线态氧反应如下:
所述薄膜内层是由聚对二甲苯薄膜制得;所述薄膜外层是由聚对二甲苯薄膜制得。
本发明还提供一种OLED显示装置的制备方法,包括如下步骤:
1)在基体上制作OLED器件,对OLED器件形成薄膜内层,并封装;
2)在薄膜内层表面形成乙基纤维素层,并封装;
3)在乙基纤维素层表面形成薄膜外层,并封装。
其中,所述乙基纤维素层由如下方法制得:
(1)将乙基纤维素(EC)置于溶剂中搅拌使其溶解,再加入有机光敏材料和单线态氧受体材料,混合均匀,静置,待气泡消失;
(2)将上步骤所得混合液均匀的涂在薄膜内层上,自然干燥,烘干,形成乙基纤维素层。
其中,所述步骤(1)中,所述溶剂为三氯甲烷。
其中,所述步骤(1)中,还可加入烯基琥珀酸酐。
其中,所述步骤(2)中,所述混合液涂在薄膜内层上,自然干燥24小时后,转移到真空烘箱80℃干燥,形成乙基纤维素层。
本发明通过在现在薄膜封装的基础上,增加疏水性的乙基纤维素层(内部溶解有光敏材料和单线态氧受体),能够起到阻隔水汽,吸收氧气的作用,从而提升器件的寿命。
实施例1一种OLED显示装置
一种OLED显示装置,如图1所示,包括自下而上的基体1、OLED器件2、薄膜内层3、乙基纤维素层4、薄膜外层5。
其中,所述乙基纤维素层由金属铁卟啉、β-胡萝卜素、乙基纤维素、ASA以摩尔比2:2:3:2混合制得;
其中,所述薄膜内层是由聚对二甲苯薄膜制得;所述薄膜外层是由聚对二甲苯薄膜制得。
实施例2一种OLED显示装置
一种OLED显示装置,如图1所示,包括自下而上的基体1、OLED器件2、薄膜内层3、乙基纤维素层4、薄膜外层5。
其中,所述乙基纤维素层由金属铁卟啉、β-胡萝卜素、乙基纤维素以摩尔比2:2:3混合制得;
其中,所述薄膜内层是由聚对二甲苯薄膜制得;所述薄膜外层是由聚对二甲苯薄膜制得。
实施例3一种OLED显示装置的制备方法
一种OLED显示装置的制备方法,包括如下步骤:
1)在基体上制作OLED器件,对OLED器件进行薄膜内层封装;
2)在薄膜内层表面制作乙基纤维素层,并封装;
3)在乙基纤维素层表面进行薄膜外层封装。
其中,所述乙基纤维素层由如下方法制得:
(1)将乙基纤维素(EC)置于三氯甲烷中搅拌使其溶解,再加入金属铁卟啉、β-胡萝卜素,混合均匀,静置,待气泡消失;或者在加入乙基纤维素的同时加入ASA;
(2)将上步骤所得混合液均匀的涂在薄膜内层上,自然干燥24小时后,转移到真空烘箱80℃干燥,形成乙基纤维素层。
Ca电学测试
我们利用Ca电学测试***进行对比试测,测试***结构如图2所示,基本原理就是在基板上制作Ca层,再用薄膜封装,然后测试Ca层1/R随时间变化的归一化曲线,并观察OLED显示装置的外观。具体操作方法如下:
1)我们通过Ca电学测试方法,分别测试了高温200℃下,现有有机薄膜封装的OLED显示装置(对比例1)和实施例1所述OELD显示装置的水氧阻隔性能,共测试80h,每2h取一次数据记录如表1所示:
表1
由表1可知,从10h开始,对比例1的水样阻隔性能开始下降,至30h左右,已经与本发明实施例1所述OELD装置差距较为明显,而在60h以后,对比例1明显下降,而本发明实施例1所述OELD装置仍保持较好的水氧阻隔性能。
2)Ca层1/R随时间变化的归一化浓度曲线图如图3所示。根据测试原理,当Ca与水氧发生反应,发生反应的部分电导率降低,薄膜电阻增大,图中曲线表现为电导率减少,由此可以看出本专利方案的对于水氧的阻隔效果要好。反应方程式:
2Ca+O2→2CaO,Ca+H2O→CaO+H2,CaO+H2O→Ca(OH)2
3)图4为测试后对比例1的OLED显示装置与实施例1的显示装置的主视图。从图中可知,现有有机膜封装的装置明显氧化发黑,而本发明实施例1所得OLED装置显示正常。
虽然,上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述,但在本发明基础上,可以对之作一些修改或改进,这对本领域技术人员而言是显而易见的。因此,在不偏离本发明精神的基础上所做的这些修改或改进,均属于本发明要求保护的范围。
Claims (9)
1.一种OLED显示装置,其特征在于,包括自下而上的基体、OLED器件、薄膜内层、乙基纤维素层、薄膜外层;
所述乙基纤维素层包括有机光敏材料、单线态氧受体材料、乙基纤维素;
所述有机光敏材料、单线态氧受体材料、乙基纤维素的摩尔比为1-3:1-3:2-4。
2.根据权利要求1所述的OLED显示装置,其特征在于,所述有机光敏材料、单线态氧受体材料、乙基纤维素的摩尔比为2:2:3。
3.根据权利要求1或2所述的OLED显示装置,其特征在于,所述有机光敏材料选自大Π共轭有机分子与金属组成的配合物、玫瑰红、荧光黄、丫啶红、亚甲基蓝中的一种或多种。
4.根据权利要求1或2所述的OLED显示装置,其特征在于,所述单线态氧受体材料选自与单烯烃反应的物质;
或者选自与链状、环状、芳香或杂环芳香型共轭π键发生Diels-AlDer型反应的物质;
或者选自与带有N、O或S给电子杂原子的活泼双键反应的物质;
或者选自与类胡萝卜素、胺类、酚类、硫醚、杂环类化合物发生反应的物质。
5.根据权利要求1所述的OLED显示装置,其特征在于,所述薄膜内层是由聚对二甲苯薄膜制得;所述薄膜外层是由聚对二甲苯薄膜制得。
6.一种OLED显示装置的制备方法,其特征在于,包括如下步骤:
1)在基体上制作OLED器件,对OLED器件形成薄膜内层,并封装;
2)在薄膜内层表面形成乙基纤维素层,并封装;
3)在乙基纤维素层表面形成薄膜外层,并封装;
所述乙基纤维素层包括有机光敏材料、单线态氧受体材料、乙基纤维素;
所述有机光敏材料、单线态氧受体材料、乙基纤维素的摩尔比为1-3:1-3:2-4。
7.根据权利要求6所述的制备方法,其特征在于,所述乙基纤维素层由如下方法制得:
步骤(1),将乙基纤维素置于溶剂中搅拌使其溶解,再加入有机光敏材料和单线态氧受体材料,混合均匀;
步骤(2),将上步骤所得混合液均匀的涂在薄膜内层上,干燥,烘干,形成乙基纤维素层。
8.根据权利要求7所述的制备方法,其特征在于,所述步骤(1)中,所述溶剂为三氯甲烷。
9.根据权利要求7所述的制备方法,其特征在于,所述步骤(2)中,所述混合液涂在薄膜内层上,自然干燥24小时后,转移到真空烘箱80℃干燥,形成乙基纤维素层。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610086268.0A CN105742327B (zh) | 2016-02-15 | 2016-02-15 | 一种oled显示装置及其制备方法 |
US15/522,869 US10008687B2 (en) | 2016-02-15 | 2016-05-11 | OLED display apparatus and preparation method thereof |
PCT/CN2016/081680 WO2017140045A1 (zh) | 2016-02-15 | 2016-05-11 | 一种oled显示装置及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610086268.0A CN105742327B (zh) | 2016-02-15 | 2016-02-15 | 一种oled显示装置及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105742327A CN105742327A (zh) | 2016-07-06 |
CN105742327B true CN105742327B (zh) | 2018-12-07 |
Family
ID=56246052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610086268.0A Active CN105742327B (zh) | 2016-02-15 | 2016-02-15 | 一种oled显示装置及其制备方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10008687B2 (zh) |
CN (1) | CN105742327B (zh) |
WO (1) | WO2017140045A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109950419B (zh) * | 2019-03-25 | 2021-02-26 | 京东方科技集团股份有限公司 | 一种oled器件封装结构、显示装置及封装方法 |
CN109994649B (zh) * | 2019-04-09 | 2021-08-27 | 京东方科技集团股份有限公司 | 一种柔性显示面板及其制备方法以及显示装置 |
CN114141830B (zh) * | 2021-11-22 | 2023-05-30 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105118931A (zh) * | 2015-09-10 | 2015-12-02 | 京东方科技集团股份有限公司 | 一种阵列基板、有机电致发光显示面板及显示装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3228984B2 (ja) * | 1992-01-17 | 2001-11-12 | 旭化成株式会社 | 有機の発光素子 |
KR100993827B1 (ko) * | 2003-12-01 | 2010-11-12 | 삼성전자주식회사 | 발광장치 및 이를 갖는 표시장치 및 이의 제조 방법 |
US7321191B2 (en) * | 2004-11-02 | 2008-01-22 | Lumination Llc | Phosphor blends for green traffic signals |
DE102004063133A1 (de) * | 2004-12-22 | 2006-07-13 | Schott Ag | Organisches elektrisches oder elektronisches Bauelement mit erhöhter Lebensdauer |
WO2008043853A2 (en) * | 2006-10-12 | 2008-04-17 | Opco Gmbh | Photochromic film |
JP5308353B2 (ja) * | 2006-12-28 | 2013-10-09 | エージェンシー フォー サイエンス,テクノロジー アンド リサーチ | 集積化気体透過センサを有するカプセル化デバイス |
KR101333138B1 (ko) * | 2012-03-05 | 2013-11-26 | 삼성디스플레이 주식회사 | 유기 발광 장치의 제조 방법, 무기막 전사용 기판 및 유기 발광 장치 |
KR101445311B1 (ko) * | 2012-08-27 | 2014-09-30 | 엘지디스플레이 주식회사 | 필름 포토레지스트 및 이를 이용한 유기전계발광표시장치의 제조방법 |
US9472788B2 (en) * | 2014-08-27 | 2016-10-18 | 3M Innovative Properties Company | Thermally-assisted self-assembly method of nanoparticles and nanowires within engineered periodic structures |
CN105097881A (zh) * | 2015-07-28 | 2015-11-25 | 合肥京东方光电科技有限公司 | 显示面板及其封装方法、显示装置 |
-
2016
- 2016-02-15 CN CN201610086268.0A patent/CN105742327B/zh active Active
- 2016-05-11 WO PCT/CN2016/081680 patent/WO2017140045A1/zh active Application Filing
- 2016-05-11 US US15/522,869 patent/US10008687B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105118931A (zh) * | 2015-09-10 | 2015-12-02 | 京东方科技集团股份有限公司 | 一种阵列基板、有机电致发光显示面板及显示装置 |
Also Published As
Publication number | Publication date |
---|---|
US10008687B2 (en) | 2018-06-26 |
WO2017140045A1 (zh) | 2017-08-24 |
CN105742327A (zh) | 2016-07-06 |
US20180062108A1 (en) | 2018-03-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105742327B (zh) | 一种oled显示装置及其制备方法 | |
Li et al. | Ratiometric fluorescence detection of tetracycline antibiotic based on a polynuclear lanthanide metal–organic framework | |
Han et al. | Aggregation‐induced emission: a rising star in chemistry and materials science | |
Wei et al. | Recent advances in aggregation‐induced electrochemiluminescence | |
Han et al. | Switching between Ligand‐to‐Ligand Charge‐Transfer, Intraligand Charge‐Transfer, and Metal‐to‐Ligand Charge‐Transfer Excited States in Platinum (II) Terpyridyl Acetylide Complexes Induced by pH Change and Metal Ions | |
Zheng et al. | Acquiring High‐Performance and Stable Mixed‐Dimensional Perovskite Solar Cells by Using a Transition‐Metal‐Substituted Pb Precursor | |
Wang et al. | Facile Preparation of Bright‐Fluorescent Soft Materials from Small Organic Molecules | |
Kwon et al. | Ion gel-based flexible electrochemiluminescence full-color display with improved sky-blue emission using a mixed-metal chelate system | |
Cao et al. | White light emission from a two-component hybrid gel via an energy transfer process | |
DeRosa et al. | Oxygen‐Sensing Difluoroboron Thienyl Phenyl β‐Diketonate Polylactides | |
Pinto et al. | An overview of luminescent bio‐based composites | |
Roy et al. | Recent advances in the development of europium (III) and terbium (III)-based luminescent supramolecular metallogels | |
CN112961669A (zh) | 固相碳量子点的制备方法、由其制备的固相碳量子点及发光器件 | |
Chang et al. | Aggregation‐Induced Phosphorescent Imaging in the Second Near‐Infrared Window | |
Xue et al. | Circularly Polarized Luminescence (CPL) from Pyrene‐Appended Cyclohexanediamides and Photoirradiation‐Tuned CPL Inversion | |
CN109134298A (zh) | 一种二聚希夫碱铂配合物的制备及应用 | |
JP4358680B2 (ja) | インジケーター組成物 | |
Yu et al. | hROS‐Responsive Behavior for Long‐Term Stability of Cellulosic Gold Nanoclusters | |
Hu et al. | Bulk Heterojunction Upconversion Thin Films Fabricated via One-Step Solution Deposition | |
CN109851618A (zh) | 一种含有氢化吩噻嗪基团的n杂环苯甲酮类衍生物及其制备方法和应用 | |
CN110699077B (zh) | 一种含铯、铅、碘的发光材料的制备方法 | |
US10109802B2 (en) | Carbazole-based gumbos for highly efficient blue OLEDs | |
Mu et al. | Exploring Reversible Quenching of Fluorescence from a Pyrazolo [3, 4‐b] quinoline Derivative by Protonation | |
CN109415626B (zh) | 化学发光体和化学发光***以及化学发光体用易碎性容器、化学发光用氧化液 | |
CN112661973B (zh) | 杯吡啶和芘磺酸盐超分子纳米粒子的制备、结构及诱导聚集发光的应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |