WO2018233248A1 - 一种oled显示面板以及显示器 - Google Patents

一种oled显示面板以及显示器 Download PDF

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Publication number
WO2018233248A1
WO2018233248A1 PCT/CN2017/117100 CN2017117100W WO2018233248A1 WO 2018233248 A1 WO2018233248 A1 WO 2018233248A1 CN 2017117100 W CN2017117100 W CN 2017117100W WO 2018233248 A1 WO2018233248 A1 WO 2018233248A1
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Prior art keywords
display panel
oled display
organic
layer
substrate
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PCT/CN2017/117100
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English (en)
French (fr)
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王川艳
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京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Priority to US16/081,884 priority Critical patent/US11031576B2/en
Publication of WO2018233248A1 publication Critical patent/WO2018233248A1/zh

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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
    • H10K59/87—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
    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • 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 present disclosure relates to the field of display technologies, and in particular, to an OLED display panel and a display.
  • OLED Organic Light-Emitting Diode
  • OLED Organic Light-Emitting Diode
  • its advantages are roughly as follows: 1. OLED is a solid-state mechanism, there is no liquid substance inside, and its seismic performance is better, it is not afraid of being beaten; 2. The angle of view is large, and the picture is still not distorted even under a large viewing angle; 3. The response of OLED The time is one thousandth of the LCD (Liquid Crystal Display), which shows that there is no smear phenomenon in the moving picture; 4. The low temperature characteristic is good, and it can still display normally at minus 40 degrees; 5. Autonomous light emission, no light effect loss The energy consumption is lower; 6, the black state is darker and the contrast is high.
  • OLED technology still has technical difficulties.
  • the current OLED packaging technology needs to be improved.
  • the RGB materials in the OLED are easily aged by the influence of water and oxygen in the environment, and the service life of the OLED is shortened.
  • the present disclosure provides an OLED display panel and a display.
  • the OLED display panel changes the internal structure of the OLED display panel, and an organic layer is added.
  • the organic layer can absorb the gas carried in the gas inside the OLED display panel, thereby prolonging the organic electricity. The lifetime of the illumination unit.
  • An OLED display panel comprising a substrate, an organic electroluminescent unit disposed on the substrate, an organic layer disposed on the substrate and covering the organic electroluminescent unit, and located at the organic a package cover plate having a layer facing away from the substrate substrate and connected to the substrate substrate; wherein: the organic layer comprises an organic material and a metal nitride capable of reacting with water to release ammonia gas.
  • the OLED display panel includes a base substrate, an organic electroluminescence unit, an organic layer, and a package cover on the side of the organic layer facing away from the substrate substrate and connected to the substrate substrate board. Since the organic electroluminescent unit is disposed on the substrate, and the organic layer is disposed on the substrate and covers the organic electroluminescent unit, the encapsulating cover and the organic electroluminescent unit perform a box operation to form the display panel, and after a long period of use After that, the gas entering the display panel is first contacted with the organic layer and then contacted with the organic electroluminescent unit.
  • the organic layer includes an organic material and a metal nitride capable of reacting with water to release ammonia gas.
  • the metal nitride in the organic layer absorbs water in the gas to perform a chemical reaction and consumes
  • the water in the gas causes the organic electroluminescent unit to contact or not contact the water in the gas entering the display panel in a small amount, delaying the aging rate of the organic electroluminescent unit and prolonging the service life.
  • the OLED display panel provided in some embodiments of the present disclosure adopts an organic layer to absorb water carried in a gas entering the OLED display panel, delaying the aging rate of the organic electroluminescent unit, and prolonging the life of the organic electroluminescent unit.
  • the internal structure of the OLED display panel is changed, and an organic layer is added, and the organic layer can absorb the gas carried in the gas inside the OLED display panel, which is favorable for the water. Extend the service life of organic electroluminescent units.
  • the organic layer further comprises lignin.
  • the mass ratio of the lignin in the organic layer is greater than 0% and less than or equal to 10%.
  • a closed cavity is formed between the organic layer and the package cover, and the closed cavity is filled with nitrogen gas, and the pressure of nitrogen in the closed cavity is higher than a standard. Atmospheric pressure.
  • the pressure of nitrogen in the enclosed cavity is between 1.05 and 1.2 times the standard atmospheric pressure.
  • the metal nitride is magnesium nitride
  • the magnesium nitride accounts for 1% to 15% by mass in the organic layer.
  • a silicon nitride layer is further disposed between the organic layer and the organic electroluminescent unit, the silicon nitride layer being used for isolating a gas and the organic electroluminescent unit.
  • the method further includes a light shielding layer disposed on a side of the package cover plate facing the substrate substrate.
  • the side of the organic layer facing away from the substrate substrate is further provided with a metal layer capable of forming a dense oxide film when oxidized by oxygen.
  • the metal layer is a non-transparent metal.
  • the present disclosure also provides a display comprising the OLED display panel of any one of the above aspects.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of an OLED display panel provided by the present disclosure
  • Embodiment 2 is a schematic structural diagram of Embodiment 2 of an OLED display panel provided by the present disclosure
  • Embodiment 3 is a schematic structural diagram of Embodiment 3 of an OLED display panel provided by the present disclosure
  • FIG. 4 is a schematic structural diagram of an organic electroluminescent unit in Embodiment 1 of an OLED display panel provided by the present disclosure.
  • Icons 1-substrate substrate; 2-organic electroluminescent unit; 20-anode; 21-hole injection layer; 22-organic light-emitting layer; 221-red organic light-emitting layer; 222-green organic light-emitting layer; Organic light-emitting layer; 23-electron transport layer; 24-cathode; 3-organic layer; 4-package cover; 5-nitrogen; 6-silicon nitride layer; 7-light-shielding layer; 8-metal layer; gum.
  • the embodiment provides an OLED display panel, comprising a substrate 1 , an organic electroluminescent unit 2 disposed on the substrate 1 , and disposed on the substrate 1 and covering the organic electroluminescent unit 2 .
  • Organic layer 3 a package cover 4 located on the side of the organic layer 3 facing away from the substrate 1 and connected to the substrate 1; wherein: the organic layer 3 comprises an organic material and a nitride capable of reacting with water to release ammonia metal.
  • the OLED display panel includes a base substrate 1, an organic electroluminescence unit 2, an organic layer 3, and a package cover plate on the side of the organic layer 3 facing away from the substrate 1 and connected to the substrate 1 4. Since the organic electroluminescent unit 2 is placed on the base substrate 1, and the organic layer 3 is disposed on the base substrate 1 and covers the organic electroluminescent unit 2, the package cover 4 and the organic electroluminescent unit 2 are subjected to a box operation to form a display. After the panel is used, after a long period of use, the gas entering the display panel first contacts the organic layer 3 and then contacts the organic electroluminescent unit 2.
  • the organic layer 3 includes an organic material and a metal nitride capable of reacting with water to release ammonia gas.
  • the metal nitride in the organic layer 3 absorbs water in the gas to perform a chemical reaction.
  • the water in the gas is consumed, so that the organic electroluminescent unit 2 contacts or does not contact the water entering the gas in the display panel in a small amount, delays the aging rate of the organic electroluminescent unit 2, and prolongs the service life.
  • the OLED display panel provided by the present disclosure absorbs water carried in the gas entering the OLED display panel by the organic layer 3, delays the aging rate of the organic electroluminescent unit 2, and prolongs the life of the organic electroluminescent unit 2.
  • the internal structure of the OLED display panel is changed, and the organic layer 3 is added, and the organic layer 3 can absorb the gas carried in the gas inside the OLED display panel, thereby prolonging the organic electroluminescence.
  • the organic layer 3 further comprises lignin.
  • the gas entering the display panel contains water and oxygen
  • the metal nitride in the organic layer 3 absorbs water in the gas
  • the lignin absorbs oxygen in the gas.
  • the organic material may be an acrylic resin such as polymethacrylic resin
  • the metal nitride which reacts with water to release ammonia gas may be aluminum nitride or magnesium nitride and other energy.
  • a metal nitride that reacts with water to release ammonia; lignin is a polymer containing a guaiac-based structure, a syringyl structure, and a p-hydroxyphenyl structure.
  • the mass ratio of lignin in the organic layer 3 is more than 0% and less than or equal to 10%.
  • a closed cavity is formed between the organic layer 3 and the package cover 4, and the closed cavity is filled with nitrogen gas 5, and the pressure of the nitrogen gas 5 in the closed cavity is higher than a standard atmospheric pressure.
  • nitrogen gas 5 fills the enclosed cavity between the organic layer 3 and the package cover 4. Since the pressure of the nitrogen gas 5 in the closed cavity is higher than a standard atmospheric pressure, the air outside the closed cavity cannot enter the inside of the closed cavity, and the nitrogen gas 5 forms the first layer of protection for the organic electroluminescent unit 2; when the above OLED display panel is used For a long time, the nitrogen gas 5 in the closed cavity is protected from the laminate, and the water and oxygen in the air under the standard atmospheric pressure enter the inside of the closed cavity, and the organic electroluminescent unit 2 is separated from the substrate 1 side. Layer 3 absorbs water and oxygen in the air to provide a second layer of protection to the organic electroluminescent unit 2.
  • the OLED display panel provided by the embodiment uses the organic layer 3 and the nitrogen gas 5 in the closed cavity to protect the organic electroluminescent unit 2 in multiple layers, so that the organic electroluminescent unit 2 can effectively prevent water and oxygen from being organically induced.
  • the influence of the structure in the light-emitting unit 2 prevents the organic electroluminescent unit 2 from aging and improves the service life of the organic electroluminescent unit 2.
  • the organic layer 3 includes a metal nitride which reacts with water to release ammonia gas
  • the pressure of the nitrogen gas 5 in the closed cavity in the above OLED display panel is gradually reduced to less than a standard atmospheric pressure, water and oxygen in the air will be
  • water and oxygen are absorbed by the metal nitride and lignin in the organic layer 3, and ammonia gas is released, supplementing the gas pressure in the closed cavity, effectively avoiding water and oxygen to the organic electricity.
  • the effect of the illuminating unit 2 enhances the life of the organic electroluminescent unit 2.
  • the pressure of the nitrogen gas 5 in the closed cavity is 1.05 times to 1.2 times the standard atmospheric pressure.
  • the pressure of the nitrogen gas 5 in the closed cavity may be selected to be 1.05 times, 1.1 times, 1.15 times, or 1.2 times the atmospheric pressure in the range of 1.05 to 1.2 atmospheres.
  • the pressure difference with a standard atmospheric pressure can be used to prevent water and oxygen in the air from entering the closed cavity, and avoiding water and oxygen to the organic electroluminescent unit.
  • the influence of the structure in 2 prevents the aging of the organic electroluminescent unit 2, improves the service life, and realizes the first layer of protection of the organic electroluminescent unit 2.
  • the pressure of nitrogen gas 5 in the closed cavity cannot exceed 1.2 times of a standard atmospheric pressure. If it exceeds 1.2 times, the pressure of nitrogen gas 5 in the closed cavity is too high, which may cause relative organic electroluminescence of the package cover 4.
  • the encapsulant 9 used in the unit 2 is subjected to excessive pressure and peeling phenomenon, thereby affecting the encapsulation effect of the OLED display panel, so that the sealing performance of the closed cavity behind the box is lowered, and water and oxygen in the air enter the closed space. Inside the cavity, the components in the organic electroluminescent unit 2 are aged and the service life is shortened.
  • the metal nitride is magnesium nitride, and the mass ratio of magnesium nitride in the organic layer 3 is 1% to 15%.
  • the mass ratio of magnesium nitride and lignin in the organic layer 3 is less than the minimum ratio, the water absorption and oxygen absorption of the organic layer 3 do not have the effect, when the magnesium nitride and the lignin are in When the mass ratio in the organic layer 3 is higher than the maximum ratio, the coatability of the organic layer 3 may be inferior.
  • the second embodiment is formed on the basis of the technical solution in the first embodiment.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a silicon nitride layer 6 is also disposed between the organic layer 3 and the organic electroluminescent unit 2, and the silicon nitride layer 6 is used to isolate the gas and the organic electroluminescent unit 2.
  • the silicon nitride layer 6 isolates the organic electroluminescent unit 2 from other substances, avoiding contact between water and oxygen, and better extending the service life of the organic electroluminescent unit 2.
  • the OLED display panel further includes a light shielding layer 7 disposed on a side of the package cover 4 facing the substrate substrate 1.
  • the light shielding layer 7 is disposed on the side of the package cover 4 facing the substrate 1 , and the orthographic projection of the light shielding layer 7 on the substrate 1 is located in the region where the organic electroluminescent unit 2 is located.
  • the light shielding layer 7 can block the display layer on the organic electroluminescent unit 2 when the encapsulant 9 is cured, so that the packaged OLED display panel has a normal display function and improves the yield of the finished product.
  • the light shielding layer 7 may be the metal layer 8, or may be an organic material layer to which a light shielding material is added.
  • the third embodiment is formed on the basis of the technical solution in the first embodiment.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a side of the organic layer 3 facing away from the substrate 1 is further provided with a metal layer 8 which can form a dense oxide film when oxidized by oxygen.
  • the metal layer 8 can block the middle display layer of the organic electroluminescent unit 2 when the encapsulant 9 is sealed and cured, and can form a dense oxide when the metal encounters oxygen oxidation.
  • the film forms protection of the organic layer 3, and the oxygen and water in the gas entering the closed cavity are contacted with the organic layer 3, starting with the time when the organic layer 3 acts, slowing the diffusion of oxygen and water to the organic electroluminescent unit The rate of 2 extends the useful life of the organic electroluminescent unit 2.
  • the metal layer 8 is a non-transparent metal.
  • the metal layer 8 is a non-transparent metal, the same light shielding effect as that of the light shielding layer 7 can be achieved. Therefore, it is not necessary to provide the light shielding layer 7 , which simplifies the process flow and saves the space occupied by the light shielding layer 7 .
  • the thin and light design of the OLED display panel provided by the present disclosure is facilitated.
  • the organic electroluminescent unit 2 sequentially includes an anode 20, a hole injection layer 21, an organic light-emitting layer 22, an electron transport layer 23, and Cathode 24.
  • the organic light emitting layer 22 includes a red organic light emitting layer 221, a green organic light emitting layer 222, and a blue organic light emitting layer 223 in this order.
  • the organic electroluminescent unit 2 is the conventional organic electroluminescent unit 2
  • the OLED display panel provided by the present disclosure does not change the structure of the organic electroluminescent unit 2, but merely optimizes and changes the packaging process.
  • the OLED display panel provided by the present disclosure has a wide range of application and is suitable for packaging of various organic electroluminescent units 2 . Referring to FIG. 4, the OLED display panel in the first embodiment is taken as an example.
  • the present disclosure also provides a display comprising any of the OLED display panels provided in the above embodiments.

Abstract

一种OLED显示面板以及显示器，该OLED显示面板包括衬底基板（1）、设置于衬底基板上的有机电致发光单元（2）、设置于衬底基板且覆盖有机电致发光单元的有机层（3）、位于有机层背离衬底基板一侧且与衬底基板对盒连接的封装盖板（4）；其中：有机层包括有机材料和能与水反应释放氨气的氮化金属。OLED显示面板采用有机层吸收进入OLED显示面板的气体内所携带的水，延缓有机电致发光单元的老化速率，延长有机电致发光单元的寿命。

Description

一种OLED显示面板以及显示器
本公开要求申请日为2017年6月22日、申请号为CN201710480778.0、发明创造名称为《一种OLED显示面板以及显示器》的发明专利申请的优先权。
技术领域
本公开涉及显示技术领域，特别涉及一种OLED显示面板以及显示器。
背景技术
近年来，作为新兴显示技术的有机电致发光显示面板(Organic Light-Emitting Diode，OLED)凭借自身优势逐渐兴起。概括起来其优势大致为:1、OLED为固态机构，内部没有液体物质，抗震性能更好，不怕摔打；2、视角大，即使在很大的视角下观看画面仍然不失真；3、OLED的响应时间是LCD(Liquid Crystal Display，液晶显示器)的千分之一，显示运动画面无拖影现象；4、低温特性好，在零下40度时仍能正常显示；5、自主发光，无光效损失，能耗更低；6、黑态更黑，对比度高。
但是，伴随众多技术优势，OLED技术依旧存在技术难点。例如：目前OLED封装技术有待提高。就目前的OLED封装技术而言，OLED内的RGB材料容易受环境中水和氧的影响而老化，缩短OLED的使用寿命。
发明内容
本公开提供了一种OLED显示面板以及显示器，该OLED显示面板中，改变了OLED显示面板的内部构造，添加了有机层，有机层可吸收进入OLED显示面板内部气体携带的水，利于延长有机电致发光单元的使用寿命。
为达到上述目的，本公开提供以下技术方案：
一种OLED显示面板，包括衬底基板、设置于所述衬底基板上的有机电致发光单元、设置于所述衬底基板且覆盖所述有机电致发光单元的有机层、位于所述有机层背离所述衬底基板一侧且与所述衬底基板对盒连接的封装盖板；其中：所述有机层包括有机材料和能与水反应释放氨气的氮化金属。
本公开某些实施例中的OLED显示面板中，OLED显示面板包括衬底基板、有机电致发光单元、有机层以及位于有机层背离衬底基板一侧且与衬底基板对盒连接的封装盖板。由于有机电致发光单元置于衬底基板，有机层设置于衬底基板且覆盖有机电致发光单元，则封装盖板与有机电致发光单元进行对盒操作形成显示面板后，经过长时间使用后，进入显示面板内的气体会先与有机层接触，再接触有机电致发光单元。而有机层中包括有机材 料和能与水反应释放氨气的氮化金属，当进入显示面板中的气体含有水时，有机层中的氮化金属会吸收气体中的水，进行化学反应，消耗气体中的水，使得有机电致发光单元少量接触或者接触不到进入显示面板内的气体中的水，延缓有机电致发光单元老化速率，延长使用寿命。本公开某些实施例中提供的OLED显示面板采用有机层吸收进入OLED显示面板的气体内所携带的水，延缓有机电致发光单元的老化速率，延长有机电致发光单元的寿命。
因此，本公开某些实施例中的OLED显示面板中，该OLED显示面板中，改变了OLED显示面板的内部构造，添加了有机层，有机层可吸收进入OLED显示面板内部气体携带的水，利于延长有机电致发光单元的使用寿命。
在一个实施例中的方式，所述有机层还包括木质素。
在一个实施例中的方式，所述木质素在所述有机层中所占质量比率为大于0％且小于等于10％。
在一个实施例中的方式，所述有机层与所述封装盖板之间形成封闭空腔，且所述封闭空腔内填充有氮气，且所述封闭空腔内氮气的压强高于一个标准大气压。
在一个实施例中的方式，所述封闭空腔内氮气的压强为标准大气压的1.05倍至1.2倍。
在一个实施例中的方式，所述氮化金属为氮化镁，所述氮化镁在所述有机层中所占质量比率为1％-15％。
在一个实施例中的方式，所述有机层和所述有机电致发光单元之间还设置有氮化硅层，所述氮化硅层用于隔离气体和所述有机电致发光单元。
在一个实施例中的方式，还包括设置于所述封装盖板朝向所述衬底基板一侧的遮光层。
在一个实施例中的方式，所述有机层背离所述衬底基板的一侧还设置有能被氧气氧化时可形成致密氧化物薄膜的金属层。
在一个实施例中的方式，所述金属层为非透明金属。
本公开还提供一种显示器，包括上述技术方案中提供的任一种所述的OLED显示面板。
附图说明
图1为本公开提供的OLED显示面板实施例一中的结构示意图；
图2为本公开提供的OLED显示面板实施例二中的结构示意图；
图3为本公开提供的OLED显示面板实施例三中的结构示意图；
图4为本公开提供的OLED显示面板实施例一中的有机电致发光单元结构示意图。
图标：1-衬底基板；2-有机电致发光单元；20-阳极；21-空穴注射层；22-有机发光层；221-红色有机发光层；222-绿色有机发光层；223-蓝色有机发光层；23-电子传送层；24-阴极；3-有机层；4-封装盖板；5-氮气；6-氮化硅层；7-遮光层；8-金属层；9-封装胶。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
实施例一
请参考图1，本实施例提供一种OLED显示面板，包括衬底基板1、设置于衬底基板1上的有机电致发光单元2、设置于衬底基板1且覆盖有机电致发光单元2的有机层3、位于有机层3背离衬底基板1一侧且与衬底基板1对盒连接的封装盖板4；其中：有机层3包括有机材料和能与水反应释放氨气的氮化金属。
上述OLED显示面板中，OLED显示面板包括衬底基板1、有机电致发光单元2、有机层3以及位于有机层3背离衬底基板1一侧且与衬底基板1对盒连接的封装盖板4。由于有机电致发光单元2置于衬底基板1，有机层3设置于衬底基板1且覆盖有机电致发光单元2，则封装盖板4与有机电致发光单元2进行对盒操作形成显示面板后，经过长时间使用后，进入显示面板内的气体会先与有机层3接触，再接触有机电致发光单元2。而有机层3中包括有机材料和能与水反应释放氨气的氮化金属，当进入显示面板中的气体含有水时，有机层3中的氮化金属会吸收气体中的水，进行化学反应，消耗气体中的水，使得有机电致发光单元2少量接触或者接触不到进入显示面板内的气体中的水，延缓有机电致发光单元2老化速率，延长使用寿命。本公开提供的OLED显示面板采用有机层3吸收进入OLED显示面板的气体内所携带的水，延缓有机电致发光单元2的老化速率，延长有机电致发光单元2的寿命。
因此，上述OLED显示面板中，该OLED显示面板中，改变了OLED显示面板的内部构造，添加了有机层3，有机层3可吸收进入OLED显示面板内部气体携带的水，利于延长有机电致发光单元2的使用寿命。
在上述技术方案的基础上，优选的，有机层3还包括木质素。需要说明的是，当有机层3还包括木质素，进入显示面板中的气体含有水和氧气时，有机层3中的氮化金属会吸收气体中的水，木质素会吸收气体中的氧气，进行化学反应，二者消耗气体中的水和氧气，使得有机电致发光单元2少量接触或者接触不到进入显示面板内的气体中的水和氧气，进一步地延缓有机电致发光单元2老化速率，延长使用寿命。
在上述技术方案的基础上，需要说明的是，有机材料可为丙烯酸树脂类，例如聚甲基丙烯酸树脂；与水反应释放氨气的氮化金属可为氮化铝或者氮化镁以及其他能与水反应释放氨气的氮化金属；木质素是含有愈创木基结构、紫丁香基结构和对羟苯基结构的聚合物。
在上述技术方案的基础上，优选的，木质素在有机层3中所占质量比率为大于0％ 且小于等于10％。
在上述技术方案的基础上，优选的，有机层3与封装盖板4之间形成封闭空腔，且封闭空腔内填充有氮气5，且封闭空腔内氮气5的压强高于一个标准大气压。
具体地，氮气5充盈有机层3与封装盖板4之间的封闭空腔内。由于封闭空腔内氮气5的气压高于一个标准大气压，则封闭空腔外部的空气无法进入封闭空腔内部，氮气5形成对有机电致发光单元2第一层保护；当上述OLED显示面板使用时间较长，封闭空腔内部氮气5保护层压强减小，外部处于标准大气压下的空气中的水和氧气进入到封闭空腔内部，有机电致发光单元2背离衬底基板1一侧的有机层3吸收空气中的水和氧气，对有机电致发光单元2进行第二层保护。
本实施例提供的OLED显示面板采用有机层3和封闭空腔内的氮气5对有机电致发光单元2进行多层保护，使得有机电致发光单元2可有效的避免水和氧气对有机电致发光单元2中结构的影响，防止有机电致发光单元2老化，提升有机电致发光单元2的使用寿命。
此外，由于有机层3中包括与水反应释放氨气的氮化金属，当上述OLED显示面板中的封闭空腔内氮气5压强逐渐减小至低于一个标准大气压，空气中的水和氧气会进入封闭空腔内时，此时水和氧气会被有机层3中的氮化金属和木质素吸收，同时释放氨气，补充封闭空腔内的气体压强，有效的避免水和氧气对有机电致发光单元2的影响，提升有机电致发光单元2寿命。
在上述技术方案的基础上，优选地，封闭空腔内氮气5的压强为标准大气压的1.05倍至1.2倍。
具体地，在1.05至1.2个大气压强范围内，封闭空腔内氮气5的压强可以选择为大气压强的1.05倍、1.1倍、1.15倍，或者1.2倍等。
需要说明的是，封闭空腔内氮气5压强大于一个标准大气压时，才能利用与一个标准大气压的压差防止空气中的水和氧气进入封闭空腔内，避免水和氧气对有机电致发光单元2中结构的影响，防止有机电致发光单元2老化，提升使用寿命，实现对有机电致发光单元2的第一层保护。
值得注意的是，封闭空腔内氮气5压强不能超过一个标准大气压的1.2倍，如若超过1.2倍，则封闭空腔内的氮气5压强过高，可能会导致封装盖板4相对有机电致发光单元2对盒时使用的封装胶9承受过大压力，出现剥离现象，从而影响上述OLED显示面板的封装效果，使得对盒后封闭空腔的密封性能降低，空气中的水和氧气进入封闭空腔内部，致使有机电致发光单元2中部件老化，缩短使用寿命。
在上述技术方案的基础上，氮化金属为氮化镁，氮化镁在有机层3中所占质量比率为1％-15％。
需要说明的是，当氮化镁和木质素在有机层3中所占质量比率低于最小比率时，有机层3吸水和吸氧作用起不到应有效果，当氮化镁和木质素在有机层3中所占质量 比率高于最大比率时，有机层3的涂覆性会较差。
需要说明的是，在上述实施例一中技术方案的基础上形成实施例二。
实施例二：
请参考图2，有机层3和有机电致发光单元2之间还设置有氮化硅层6，氮化硅层6用于隔离气体和有机电致发光单元2。
需要说明的是，氮化硅层6隔离有机电致发光单元2与其他物质，避免水和氧气与其接触，更好地延长有机电致发光单元2的使用寿命。
在实施例一和实施例二的基础上，OLED显示面板还包括设置于封装盖板4朝向衬底基板1一侧的遮光层7。
具体地，遮光层7设置于封装盖板4朝向衬底基板1一侧，满足遮光层7在衬底基板1上的正投影位于有机电致发光单元2所在区域。
需要说明的是，遮光层7可以在封装胶9固化时遮挡有机电致发光单元2上的显示层，使得封装后的OLED显示面板显示功能正常，提高成品合格率。遮光层7可以为金属层8，也可以为添加遮光材料的有机物质层。
需要说明的是，在上述实施例一中技术方案的基础上形成实施例三。
实施例三：
请参考图3，有机层3背离衬底基板1的一侧还设置有能被氧气氧化时可形成致密氧化物薄膜的金属层8。
需要说明的是，金属层8一方面可以起封装胶9密封固化时遮挡有机电致发光单元2的中显示层的作用，另一方面也可在金属遇到氧气氧化时，形成致密的氧化物薄膜，形成对有机层3的保护，延长进入封闭空腔内的气体中的氧气和水接触有机层3，开始于有机层3发生作用的时间，减慢氧气和水扩散至有机电致发光单元2的速率，延长有机电致发光单元2的使用寿命。
在上述实施例三中技术方案的基础上，金属层8为非透明金属。
需要说明的是，当金属层8为非透明金属，可起到与遮光层7同样的遮光作用时，因此不必再设置遮光层7，简化了工艺流程，节约了遮光层7原本所占空间，利于本公开提供的OLED显示面板的轻薄化设计。
具体地，在上述技术方案的基础上，沿衬底基板1指向封装盖板4方向，有机电致发光单元2依次包括阳极20、空穴注射层21、有机发光层22、电子传送层23和阴极24。
需要说明的是，有机发光层22依次包括红色有机发光层221、绿色有机发光层222以及蓝色有机发光层223。通过上述结构描述可知，有机电致发光单元2为目前常规有机电致发光单元2，本公开提供的OLED显示面板并未改变有机电致发光单元2的结构，仅仅是对封装工艺的优化与改变，本公开提供的OLED显示面板适用范围广泛，适用于各种有机电致发光单元2的封装。请参考图4，以实施例一中OLED显示面 板为例。
本公开还提供一种显示器，包括上述各实施例中提供的任一种OLED显示面板。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (11)

  1. 一种OLED显示面板，包括衬底基板、设置于所述衬底基板上的有机电致发光单元、设置于所述衬底基板且覆盖所述有机电致发光单元的有机层、位于所述有机层背离所述衬底基板一侧且与所述衬底基板对盒连接的封装盖板；其中：
    所述有机层包括有机材料和能与水反应释放氨气的氮化金属。
  2. 根据权利要求1所述的OLED显示面板，其中，所述有机层还包括木质素。
  3. 根据权利要求2所述的OLED显示面板，其中，所述木质素在所述有机层中所占质量比率为大于0％且小于等于10％。
  4. 根据权利要求1所述的OLED显示面板，其中，所述有机层与所述封装盖板之间形成封闭空腔，且所述封闭空腔内填充有氮气，且所述封闭空腔内氮气的压强高于一个标准大气压。
  5. 根据权利要求4所述的OLED显示面板，其中，所述封闭空腔内氮气的压强为标准大气压的1.05倍至1.2倍。
  6. 根据权利要求1所述的OLED显示面板，其中，所述氮化金属为氮化镁，所述氮化镁在所述有机层中所占质量比率为1％-15％。
  7. 根据权利要求1所述的OLED显示面板，其中，所述有机层和所述有机电致发光单元之间还设置有氮化硅层，所述氮化硅层用于隔离气体和所述有机电致发光单元。
  8. 根据权利要求1-7任一项所述的OLED显示面板，其中，还包括设置于所述封装盖板朝向所述衬底基板一侧的遮光层。
  9. 根据权利要求1所述的OLED显示面板，其中，所述有机层背离所述衬底基板的一侧还设置有能被氧气氧化时可形成致密氧化物薄膜的金属层。
  10. 根据权利要求9所述的OLED显示面板，其中，所述金属层为非透明金属。
  11. 一种显示器，包括如权利要求1-10任一项所述的OLED显示面板。
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