WO2021248552A1 - 一种有机发光膜层、oled显示面板及显示装置 - Google Patents
一种有机发光膜层、oled显示面板及显示装置 Download PDFInfo
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- WO2021248552A1 WO2021248552A1 PCT/CN2020/097322 CN2020097322W WO2021248552A1 WO 2021248552 A1 WO2021248552 A1 WO 2021248552A1 CN 2020097322 W CN2020097322 W CN 2020097322W WO 2021248552 A1 WO2021248552 A1 WO 2021248552A1
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- 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]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- 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]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
Definitions
- This application relates to the field of display panels, and in particular to an organic light-emitting film layer, an OLED display panel and a display device.
- Thermally activated delayed fluorescence (TADF) material is a new type of purely organic electronic material that can simultaneously utilize singlet and triplet excitons generated by electrical excitation to achieve a theoretical internal quantum efficiency of 100%.
- TADF Thermally activated delayed fluorescence
- An object of the present invention is to provide an organic light-emitting film layer, which can solve the problem in the prior art that the TADF material has a large spectral half-width, which is not conducive to the improvement of color gamut and color purity.
- the present invention provides an organic light emitting film layer, comprising at least one first film layer and at least one second film layer, the first film layer and the second film layer are arranged in a laminated layer; and at least one second film layer The three film layers are arranged between the first film layer and the second film layer; wherein, the first film layer has at least a thermal activation retardation material, and the material used for the third film layer is an organic material, The second film layer has a fluorescent material and the organic material.
- the thickness of the third film layer is less than or equal to that of the organic light emitting film layer. Energy transfer radius R 0 .
- k, n, ⁇ , J are the constants of each film layer in the organic light-emitting film layer, specifically, k is the dipole direction factor of the first film layer, and n is the refraction of the third film layer.
- ⁇ is the photoluminescence quantum yield of the thermally activated delay material
- J is the spectral overlap integral of the donor emission and acceptor absorption of the second film layer.
- R 0 when the selected materials for the first film layer, the second film layer, and the third film layer are determined, R 0 can be calculated, and if the selected material does not change, R 0 does not change. Setting the distance between the first film layer and the second film layer to be less than or equal to R 0 can ensure Effective energy transfer.
- the organic light emitting film layer further includes The main body layer, the first film layer, the second film layer, and the third film layer are arranged in the main body layer, and the material used for the main body layer is the same as the material used for the third film layer.
- the first film layer has a thermal activation delay material and an organic material.
- the number of the first film layer is greater than or equal to 2
- the number of the second film layer is greater than or equal to 2
- the number of the third film layer is greater than or equal to 2.
- the content ratio of the thermal activation delay material is 10-50%
- the content ratio of the fluorescent material is 1-10%
- the content ratio of the organic material is 40-89%.
- the singlet and triplet energies of the organic material are greater than or equal to the singlet and triplet energies of the thermally activated delayed material.
- the emission spectrum of the thermally activated delay material and the absorption spectrum of the fluorescent material overlap by 40%-100%.
- the present invention also provides an OLED display panel, including a hole injection layer; a hole transport layer arranged on the hole injection layer; the organic light emitting film layer of the invention is arranged on the hole injection layer; The hole transport layer; the electron transport layer, which is arranged on the organic light-emitting film layer; the electron injection layer, which is arranged on the electron transport layer.
- the OLED display panel further includes a hole blocking layer, which is arranged between the organic light-emitting film layer and the electron transport layer; and the electron blocking layer is arranged between the organic light-emitting film layer and the electron transport layer. Between the hole transport layers.
- the organic light-emitting film layer includes a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, and the thickness of the electron blocking layer on the red light-emitting unit is greater than that on the green light-emitting unit.
- the thickness of the electron blocking layer, the thickness of the electron blocking layer on the green light-emitting unit is greater than the thickness of the electron blocking layer on the blue light-emitting unit.
- the present invention also provides a display device, including the OLED display panel related to the present invention.
- the beneficial effects of the present invention are: the present invention provides an organic light-emitting film layer, an OLED display panel and a display device.
- the material emits light as a guest, which reduces the spectral width while improving the efficiency of the device.
- the calculation of the energy transfer radius separates the traditional fluorescent guest material and the thermal activation delay material, reduces the exciton density in the fixed region, and prevents triplet-triple state annihilation (TTA) and triplet exciton-polaron annihilation (TPA), singlet-single state exciton annihilation (SSA) and other ways to promote device aging, are conducive to prolonging the life of the device.
- TTA triplet-triple state annihilation
- TPA triplet exciton-polaron annihilation
- SSA singlet-single state exciton annihilation
- FIG. 1 is a schematic diagram of the structure of an organic light-emitting film layer provided by Embodiment 1 of the present invention
- FIG. 2 is a schematic structural diagram of an OLED display panel provided by Embodiment 1 of the present invention.
- Embodiment 3 is a schematic diagram of the structure of an organic light-emitting film layer provided by Embodiment 2 of the present invention.
- Embodiment 4 is a schematic diagram of the structure of an organic light-emitting film layer provided by Embodiment 3 of the present invention.
- Green light-emitting unit-220 Blue light-emitting unit-220;
- Electron injection layer -160 Electron injection layer -160.
- the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
- “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature is higher than that of the second feature.
- the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
- the embodiment 1 provides an organic light-emitting film layer. Please refer to FIG. 1.
- FIG. 1 is a schematic structural diagram of the organic light-emitting film layer 100 provided by this embodiment.
- the organic light emitting film layer 100 includes a first film layer 10, a second film layer 20 and a third film layer 30.
- the first film layer 10 and the second film layer 20 are stacked, and the third film layer 30 is disposed between the first film layer 10 and the second film layer 20.
- the material of the first film layer 10 is a thermally activated retardation material
- the material of the third film layer 30 is an organic material
- the second film layer 20 contains a fluorescent material and the organic material.
- the positive-carrying carrier exists in the first film layer 10 where the thermally activated delay material is located, and the excitons are continuously diluted through processes such as diffusion, which reduces the attenuation and aging of the device caused by the excessive exciton density.
- the thickness of the third film layer 30 is less than or equal to the thickness of the thermally activated retardation material and the fluorescent material. Energy transfer radius R 0 .
- k, n, ⁇ , J are the constants of each layer in the organic light-emitting film layer 100, specifically, k is the dipole direction factor of the first film layer 10, and n is the refractive index of the third film layer 30 , ⁇ is the photoluminescence quantum yield of the thermally activated delay material, and J is the spectral overlap integral of the donor emission and acceptor absorption of the second film layer 20.
- R 0 when the materials selected for the first film layer 10, the second film layer 20, and the third film layer 30 are determined, R 0 can be calculated, and if the selected material does not change, R 0 does not change. Setting the distance between the first film layer 10 and the second film layer 20 to be less than or equal to R 0 can ensure Effective energy transfer.
- the content ratio of the thermal activation delay material is 10-50%, the content ratio of the fluorescent material is 1-10%, and the content ratio of the organic material is 40-89%.
- the singlet and triplet energy of the organic material is greater than or equal to the singlet and triplet energy of the thermally activated delayed material.
- the emission spectrum of the thermally activated delay material and the absorption spectrum of the fluorescent material overlap greatly, and the overlap ratio is between 40% and 100%.
- FIG. 2 is a schematic structural diagram of an OLED display panel 200 provided by an embodiment of the present invention.
- the OLED display panel 200 includes a hole injection layer 110 and a hole transport layer. 120, the electron blocking layer 130, the organic light emitting film layer 100 according to the present invention, the hole blocking layer 140, the electron transport layer 150, and the electron injection layer 160.
- the hole transport layer 120 is provided on the hole injection layer 110, the electron blocking layer 130 is provided on the hole transport layer 120, the organic light emitting film layer 100 of the present invention is provided on the electron blocking layer 130, and the hole blocking layer 140 is provided On the organic light emitting film layer 100, the electron transport layer 150 is provided on the hole blocking layer 140, and the electron injection layer 160 is provided on the electron transport layer 150.
- the organic light emitting film layer 100 includes a red light emitting unit 210, a green light emitting unit 220, and a blue light emitting unit 230.
- the thickness of the electron blocking layer 130 on the red light emitting unit 210 is greater than the thickness of the electron blocking layer 130 on the green light emitting unit 220, and the green emits light.
- the thickness of the electron blocking layer 130 on the cell 220 is greater than the thickness of the electron blocking layer 130 on the blue light emitting cell 230.
- the present invention also provides a display device, including the OLED display panel 200 related to the present invention.
- the organic light-emitting film layer in this embodiment is also provided with a first film layer, a second film layer, and a third film layer, which are roughly the same as the corresponding structure in Embodiment 1.
- a second film layer for the same structure, please refer to Embodiment 1.
- a third film layer for the same structure, please refer to Embodiment 1.
- the organic light-emitting film layer also includes a host layer.
- FIG. 3 is a schematic diagram of the structure of the organic light emitting film layer 100 provided by this embodiment.
- the first film layer 10 is provided with one layer
- the second film layer 20 is provided with one layer
- the third film layer 30 is provided with one layer.
- a film layer 10, a second film layer 20, and a third film layer 30 are provided in the main body layer 40, and the material used for the main body layer 40 is the same as the material used for the third film layer 30.
- the organic light-emitting film layer in this embodiment is also provided with a first film layer, a second film layer, and a third film layer, which are roughly the same as the corresponding structure in Embodiment 1.
- the first film layer 10 has a thermally activated retardation material and an organic material used in the third film layer 30, and the thermally activated retardation material and the organic material are both doped in the first film layer 10;
- the number of first film layers 10 is greater than or equal to 2
- the number of second film layers 20 is greater than or equal to 2
- the number of third film layers 30 is greater than or equal to two.
- FIG. 4 is a schematic diagram of the structure of the organic light emitting film layer 100 provided by this embodiment.
- the distance between the first film layer 10 and the second film layer 20 is also less than or equal to R0. This arrangement further reduces the exciton density, increases the efficiency of the device, and prevents the device from attenuating.
- the beneficial effects of the present invention are: the present invention provides an organic light-emitting film layer, an OLED display panel and a display device.
- the material emits light as a guest, which reduces the spectral width while improving the efficiency of the device.
- the calculation of the energy transfer radius separates the traditional fluorescent guest material and the thermal activation delay material, reduces the exciton density in the fixed region, and prevents triplet-triple state annihilation (TTA) and triplet exciton-polaron annihilation (TPA), singlet-single state exciton annihilation (SSA) and other ways to promote device aging, are conducive to prolonging the life of the device.
- TTA triplet-triple state annihilation
- TPA triplet exciton-polaron annihilation
- SSA singlet-single state exciton annihilation
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Abstract
一种有机发光膜层(100)、OLED显示面板(200)及显示装置,包括至少一第一膜层(10)和至少一第二膜层(20),第一膜层(10)和第二膜层(20)叠层设置;以及至少一第三膜层(30),设于第一膜层(10)和第二膜层(20)之间;其中,第一膜层(10)中至少具有热激活延迟材料,第三膜层(30)所用材料为有机材料,第二膜层(20)中具有荧光材料和有机材料。
Description
本申请涉及显示面板领域,尤其地涉及一种有机发光膜层、OLED显示面板及显示装置。
随着经济水平的提高,平板电视愈来愈受到人们欢迎,电视的解析度也越来越高,从最初OLED由于可制备在柔性衬底上,近几年备受市场青睐。中小尺寸方面,随着折叠手机的到来,OLED的发展可谓进入二次爆发阶段。但是,目前手机面板中最常用的side-by-side体系,蓝色子像素的发光层仍然采用的是传统蓝色荧光结构,该荧光材料由于只能利用25%的单线态激子而使得理论内量子效率仅为25%,由于只能利用25%的单线态激子,蓝光荧光结构部分的效率低和功耗大一直是阻碍OLED显示发展的瓶颈问题。同时红、绿子像素的发光层虽然采用的磷光体系,但因为磷光材料自身含有重金属,成本较高,且由于磷光专利的垄断,其材料供应选择及价格都对低成本面板出货造成很大困扰。
热激活延迟(thermally activated delayed fluorescence,TADF)材料是一种新型的纯有机电子材料,可以同时利用电激发产生的单线态及三线态激子,使理论内量子效率达到100%。但是由于TADF材料的光谱半峰宽较大,不利于色域及色纯度的提升。
因此,确有必要来开发一种新型的OLED显示面板,以克服现有技术的缺陷。
本发明的一个目的是提供一种有机发光膜层,其能够解决现有技术中由于TADF材料的光谱半峰宽较大,不利于色域及色纯度的提升的问题。
为实现上述目的,本发明提供一种有机发光膜层,包括至少一第一膜层和至少一第二膜层,所述第一膜层和所述第二膜层叠层设置;以及至少一第三膜层,设于所述第一膜层和所述第二膜层之间;其中,所述第一膜层中至少具有热激活延迟材料,所述第三膜层所用材料为有机材料,所述第二膜层中具有荧光材料和所述有机材料。
正-负载流子的存在于所述热激活延迟材料所在的所述第一膜层中,而激子通过扩散等过程不断稀释,减小因为激子密度过大而引起的器件衰减与老化。
其中,k、n、Φ、J分别为所述有机发光膜层中各膜层的常数,具体地,k为所述第一膜层的偶极子方向因子,n为第三膜层的折射率,Φ为所述热激活延迟材料的光致发光量子产额,J为所述第二膜层的施主发射和受主吸收的光谱重叠积分。
进一步的,在其他实施方式中,其中所述第一膜层设有一层,所述第二膜层设有一层,所述第三膜层设有一层,其中,所述有机发光膜层还包括主体层,所述第一膜层、所述第二膜层和所述第三膜层设于所述主体层中,所述主体层所用材料与所述第三膜层所用材料一致。
进一步的,在其他实施方式中,其中所述第一膜层中具有热激活延迟材料和有机材料。
进一步的,在其他实施方式中,其中所述第一膜层的数量大于等于2,所述第二膜层的数量大于等于2,所述第三膜层的数量大于等于2。
进一步的,在其他实施方式中,其中所述热激活延迟材料的含量比例为10-50%,所述荧光材料的含量比例为1-10%,所述有机材料的含量比例为40-89%。
进一步的,在其他实施方式中,其中所述有机材料的的单线态及三线态能量大于等于所述热激活延迟材料的单线态及三线态能量。
进一步的,在其他实施方式中,其中所述热激活延迟材料的发射光谱与所述荧光材料的吸收光谱40%-100%重叠。
为实现上述目的,本发明还提供一种OLED显示面板,包括空穴注入层;空穴传输层,设于所述空穴注入层上;本发明涉及的所述有机发光膜层,设于所述空穴传输层上;电子传输层,设于所述有机发光膜层上;电子注入层,设于所述电子传输层上。
进一步的,在其他实施方式中,其中OLED显示面板还包括空穴阻挡层,设于所述有机发光膜层和所述电子传输层之间;电子阻挡层,设于所述有机发光膜层和所述空穴传输层之间。
进一步的,在其他实施方式中,其中所述有机发光膜层包括红色发光单元、绿色发光单 元和蓝色发光单元,所述红色发光单元上的电子阻挡层的厚度大于所述绿色发光单元上的电子阻挡层的厚度,所述绿色发光单元上的电子阻挡层的厚度大于所述蓝色发光单元上的电子阻挡层的厚度。
为实现上述目的,本发明还提供一种显示装置,包括本发明涉及的所述OLED显示面板。
相对于现有技术,本发明的有益效果在于:本发明提供一种有机发光膜层、OLED显示面板及显示装置,有机发光膜层中将热激活延迟材料作为敏化剂,再掺杂传统荧光材料作为客体发光,在提升器件效率的同时,减小了光谱宽度。
进一步地,利用
能量传递半径的计算,将传统荧光客体材料和热激活延迟材料分开,减小了固定区域内的激子密度,防止了三重态-三重态湮灭(TTA)、三重态激子-极化子湮灭(TPA)、单重态-单重态激子湮灭(SSA)等促使器件老化的途径,有利于延长器件寿命。
下面结合附图,通过对本申请的具体实施方式详细描述,将使本申请的技术方案及其它有益效果显而易见。
图1为本发明实施例1提供的有机发光膜层的结构示意图;
图2为本发明实施例1提供的OLED显示面板的结构示意图;
图3为本发明实施例2提供的有机发光膜层的结构示意图;
图4为本发明实施例3提供的有机发光膜层的结构示意图。
附图说明:
有机发光膜层-100;
第一膜层-10; 第二膜层-20;
第三膜层-30; 主体层-40;
OLED显示面板-200;
空穴注入层-110; 空穴传输层-120;
电子阻挡层130; 红色发光单元-210;
绿色发光单元-220; 蓝色发光单元-220;
空穴阻挡层-140; 电子传输层-150;
电子注入层-160。
下面将结合本申请实施例中的附图,对本申请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申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
在本申请中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开,下文中对特定例子的部件和设置进行描述。当然,它们仅仅为示例,并且目的不在于限制本申请。此外,本申请可以在不同例子中重复参考数字和/或参考字母,这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施方式和/或设置之间的关系。此外,本申请提供了的各种特定的工艺和材料的例子,但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
实施例1
本实施例1提供一种有机发光膜层,请参阅图1,图1所示为本实施例提供的有机发光膜层100的结构示意图。有机发光膜层100包括第一膜层10、第二膜层20和第三膜层30。
其中,第一膜层10和第二膜层20叠层设置,第三膜层30,设于第一膜层10和第二膜层20之间。
第一膜层10所用材料为热激活延迟材料,第三膜层30所用材料为有机材料,第二膜层20中具有荧光材料和所述有机材料。
正-负载流子的存在于热激活延迟材料所在的第一膜层10中,而激子通过扩散等过程不断稀释,减小因为激子密度过大而引起的器件衰减与老化。
其中,k、n、Φ、J分别为有机发光膜层100中各膜层的常数,具体地,k为第一膜层10的偶极子方向因子,n为第三膜层30的折射率,Φ为所述热激活延迟材料的光致发光量子产额,J为第二膜层20的施主发射和受主吸收的光谱重叠积分。
热激活延迟材料的含量比例为10-50%,荧光材料的含量比例为1-10%,有机材料的含量比例为40-89%。
有机材料的的单线态及三线态能量大于等于热激活延迟材料的单线态及三线态能量。
同时,热激活延迟材料的发射光谱与荧光材料的吸收光谱出现很大重叠,重叠比例在40%-100%之间。
本实施例还提供一种OLED显示面板,请参阅图2,图2所示为本发明实施例提供的OLED显示面板200的结构示意图,OLED显示面板200包括空穴注入层110、空穴传输层120、电子阻挡层130、本发明涉及的有机发光膜层100、空穴阻挡层140、电子传输层150和电子注入层160。
空穴传输层120设于空穴注入层110上,电子阻挡层130设于空穴传输层120上,本发明涉及的有机发光膜层100设于电子阻挡层130上,空穴阻挡层140设于有机发光膜层100上,电子传输层150设于空穴阻挡层140上,电子注入层160设于电子传输层150上。
有机发光膜层100包括红色发光单元210、绿色发光单元220和蓝色发光单元230,红色发光单元210上的电子阻挡层130的厚度大于绿色发光单元220上的电子阻挡层130的厚度,绿色发光单元220上的电子阻挡层130的厚度大于蓝色发光单元230上的电子阻挡层130的厚度。
为实现上述目的,本发明还提供一种显示装置,包括本发明涉及的OLED显示面板200。
实施例2
本实施例中的有机发光膜层,也设置有有第一膜层、第二膜层和第三膜层,其与实施例1中的对应结构大致相同,其相同的结构可参照实施例1中的对应描述,此处不再赘述。其中两者的主要不同之处在于,有机发光膜层还包括主体层。
请参阅图3,图3为本实施例提供的有机发光膜层100的结构示意图,第一膜层10设有一层,第二膜层20设有一层,第三膜层30设有一层,第一膜层10、第二膜层20和第三膜层30设于主体层40中,主体层40所用材料与第三膜层30所用材料一致。
实施例3
本实施例中的有机发光膜层,也设置有有第一膜层、第二膜层和第三膜层,其与实施例1中的对应结构大致相同,其相同的结构可参照实施例1中的对应描述,此处不再赘述。其中两者的主要不同之处在于,第一膜层10中具有热激活延迟材料以及第三膜层30所用的有机材料,热激活延迟材料和有机材料共同掺杂于第一膜层10中;并且第一膜层10的数量大于等于2,第二膜层20的数量大于等于2,第三膜层30的数量大于等于2。
请参阅图4,图4为本实施例提供的有机发光膜层100的结构示意图,第一膜层10和第二膜层20的距离同样是小于等于R0。这种设置方式进一步地减小了激子密度,增大器件效率,防止器件衰减。
相对于现有技术,本发明的有益效果在于:本发明提供一种有机发光膜层、OLED显示面板及显示装置,有机发光膜层中将热激活延迟材料作为敏化剂,再掺杂传统荧光材料作为客体发光,在提升器件效率的同时,减小了光谱宽度。
进一步地,利用
能量传递半径的计算,将传统荧光客体材料和热激活延迟材料分开,减小了固定区域内的激子密度,防止了三重态-三重态湮灭(TTA)、三重态激子-极化子湮灭(TPA)、单重态-单重态激子湮灭(SSA)等促使器件老化的途径,有利于延长器件寿命。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种有机发光膜层、OLED显示面板及显示装置进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想;本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。
Claims (20)
- 一种有机发光膜层,其中,包括至少一第一膜层和至少一第二膜层,所述第一膜层和所述第二膜层叠层设置;以及至少一第三膜层,设于所述第一膜层和所述第二膜层之间;其中,所述第一膜层中至少具有热激活延迟材料,所述第三膜层所用材料为有机材料,所述第二膜层中具有荧光材料和所述有机材料。
- 根据权利要求2所述的有机发光膜层,其中,所述第一膜层设有一层,所述第二膜层设有一层,所述第三膜层设有一层,其中,所述有机发光膜层还包括主体层,所述第一膜层、所述第二膜层和所述第三膜层设于所述主体层中,所述主体层所用材料与所述第三膜层所用材料一致。
- 根据权利要求1所述的有机发光膜层,其中,所述第一膜层中具有热激活延迟材料和有机材料。
- 根据权利要求4所述的有机发光膜层,其中,所述第一膜层的数量大于等于2,所述第二膜层的数量大于等于2,所述第三膜层的数量大于等于2。
- 根据权利要求1所述的有机发光膜层,其中,所述热激活延迟材料的含量比例为10-50%,所述荧光材料的含量比例为1-10%,所述有机材料的含量比例为40-89%。
- 根据权利要求1所述的有机发光膜层,其中,所述有机材料的的单线态及三线态能量大于等于所述热激活延迟材料的单线态及三线态能量。
- 根据权利要求1所述的有机发光膜层,其中,所述热激活延迟材料的发射光谱与所述荧光材料的吸收光谱40%-100%重叠。
- 一种OLED显示面板,其中,包括空穴注入层;空穴传输层,设于所述空穴注入层上;如权利要求1所述的有机发光膜层,设于所述空穴传输层上;电子传输层,设于所述有机发光膜层上;电子注入层,设于所述电子传输层上。
- 根据权利要求10所述的OLED显示面板,其中,所述第一膜层设有一层,所述第二膜层设有一层,所述第三膜层设有一层,其中,所述有机发光膜层还包括主体层,所述第一膜层、所述第二膜层和所述第三膜层设于所述主体层中,所述主体层所用材料与所述第三膜层所用材料一致。
- 根据权利要求9所述的OLED显示面板,其中,所述第一膜层中具有热激活延迟材料和有机材料。
- 根据权利要求12所述的OLED显示面板,其中,所述第一膜层的数量大于等于2,所述第二膜层的数量大于等于2,所述第三膜层的数量大于等于2。
- 根据权利要求9所述的OLED显示面板,其中,所述热激活延迟材料的含量比例为10-50%,所述荧光材料的含量比例为1-10%,所述有机材料的含量比例为40-89%。
- 根据权利要求9所述的OLED显示面板,其中,所述有机材料的的单线态及三线态能量大于等于所述热激活延迟材料的单线态及三线态能量。
- 根据权利要求9所述的OLED显示面板,其中,所述热激活延迟材料的发射光谱与所述荧光材料的吸收光谱40%-100%重叠。
- 一种显示装置,其中,包括如权利要求9所述的OLED显示面板。
- 根据权利要求18所述的显示装置,其中,所述第一膜层设有一层,所述第二膜层设有一层,所述第三膜层设有一层,其中,所述有机发光膜层还包括主体层,所述第一膜层、所述第二膜层和所述第三膜层设于所述主体层中,所述主体层所用材料与所述第三膜层所用材料一致。
- 根据权利要求17所述的显示装置,其中,所述第一膜层中具有热激活延迟材料和有机材料。
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