WO2019024192A1 - 一种有机电致发光器件和显示面板 - Google Patents

一种有机电致发光器件和显示面板 Download PDF

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Publication number
WO2019024192A1
WO2019024192A1 PCT/CN2017/102578 CN2017102578W WO2019024192A1 WO 2019024192 A1 WO2019024192 A1 WO 2019024192A1 CN 2017102578 W CN2017102578 W CN 2017102578W WO 2019024192 A1 WO2019024192 A1 WO 2019024192A1
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layer
emitting layer
light
electroluminescent device
organic
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PCT/CN2017/102578
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English (en)
French (fr)
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夏存军
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武汉华星光电半导体显示技术有限公司
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Priority to US15/561,064 priority Critical patent/US20190044086A1/en
Publication of WO2019024192A1 publication Critical patent/WO2019024192A1/zh

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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
    • H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
    • H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/32—Stacked devices having two or more layers, each emitting at different wavelengths

Definitions

  • the present invention relates to the field of display, and in particular to an organic electroluminescent device and a display panel.
  • OLED Organic Light-Emitting Diode
  • OLED Organic Light Emitting Diode
  • the main object of the present invention is to provide an organic electroluminescent device and a display panel, which can reduce the difficulty in preparing a display panel, improve pixel resolution, improve product yield, and save cost.
  • a technical solution adopted by the present invention is to provide an organic electroluminescent device comprising: a first anode, a first hole injection layer, a first hole transport layer, and a first organic layer which are sequentially stacked.
  • a light emitting layer a first electron transporting layer, a first electron injecting layer, a charge generating layer, a second electron injecting layer, a second electron transporting layer, a second organic light emitting layer, a second hole transporting layer, and a second hole injecting layer And a second anode; wherein the second organic light-emitting layer is a first primary light-emitting layer, and the first organic light-emitting layer is a second primary light-emitting layer or a third primary-color light-emitting layer.
  • a display panel including a substrate, a driving circuit, and a plurality of organic electroluminescent devices as described above disposed on the substrate; the driving circuit is coupled The organic electroluminescent device for controlling the first organic light-emitting layer and the second organic light-emitting layer of the organic electroluminescent device to emit light separately or simultaneously.
  • the beneficial effects of the present invention are: different from the prior art, the present invention adds a reverse OLED device structure to a forward OLED device structure, and adds a charge generation layer between the two.
  • An organic electroluminescent device comprises two light emitting layers, wherein the second organic light emitting layer is a first primary light emitting layer, and the first organic light emitting layer is a second primary light emitting layer or a third primary light emitting layer, and the three primary colors are displayed.
  • the required occupied space is reduced, and the pixel resolution is improved; the second organic light-emitting layer is the first primary light-emitting layer, so that it is not necessary to use the FMM when fabricating the second organic light-emitting layer, and the general mask can be used to meet the requirements.
  • Reduce the difficulty of preparing display panels improve product yield and save costs.
  • FIG. 1 is a schematic structural view of an embodiment of an organic electroluminescent device provided by the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of a display panel provided by the present invention.
  • FIG. 3 is a schematic structural view of a first embodiment of an arrangement of an organic electroluminescent device on a display panel provided by the present invention
  • FIG. 4 is a schematic structural view of a second embodiment of an arrangement of an organic electroluminescent device on a display panel provided by the present invention.
  • FIG. 1 is a schematic structural diagram of an embodiment of an organic electroluminescent device provided by the present invention.
  • the organic electroluminescent device 10 includes a first anode 101, a first hole injection layer 102, a first hole transport layer 103, a first organic light-emitting layer 104, a first electron transport layer 105, and a first electron injection layer which are sequentially stacked.
  • the second anode 113 is made of a transparent material, so that the light emitted by the first organic light-emitting layer 104 and the second organic light-emitting layer 110 can be transmitted.
  • the first anode 101 may be made of a transparent material, or the first anode 101 and the second anode 113 may be made of a transparent material.
  • the second organic light-emitting layer 110 is a first primary light-emitting layer
  • the first organic light-emitting layer 104 is a second primary light-emitting layer or a third primary-color light-emitting layer.
  • the first primary color light is blue light
  • the second primary color light is red light
  • the third primary color light is green light. That is, the second organic light-emitting layer 110 is a blue light-emitting layer
  • the first organic light-emitting layer 104 is a red light or a green light-emitting layer.
  • the arrangement is because the lifetime of the blue light-emitting layer is shorter than that of the red light-emitting layer or the green light-emitting layer, so that the red light-emitting layer or the green light-emitting layer is disposed at the position of the first organic light-emitting layer 104, and the light emitted therefrom
  • the loss of light is greater than the loss of light emitted from the blue light-emitting layer of the second organic light-emitting layer 110 transmitted to the second anode 113 and transmitted, so that the first organic light is disposed.
  • the power of the red light emitting layer or the green light emitting layer at the position of the layer 104 is set larger than the blue light emitting layer disposed in the second organic light emitting layer 110 to emit stronger light, so that no matter what color of light is transmitted through
  • the blue light emitting layer with a shorter lifetime is disposed at the position of the second organic light emitting layer 110, which can effectively reduce the loss of the blue light emitting layer and prolong the service life of the organic electroluminescent device.
  • the present embodiment only enumerates the primary color distribution modes of the above two organic light-emitting layers in consideration of the primary light lifetime.
  • the first organic light emitting layer 104 and the second organic light emitting layer 110 may be any combination of the three primary color light emitting layers.
  • the first organic light emitting layer 104 may be a red light emitting layer
  • the second organic light emitting layer 110 may be The green light emitting layer or the blue light emitting layer
  • the first organic light emitting layer 104 may be a green light emitting layer
  • the second organic light emitting layer 110 may be a red light emitting layer or a blue light emitting layer.
  • the first hole injection layer 102 is deposited on the surface of the first anode 101 by using a first mask.
  • the first hole transport layer 103 is deposited on the surface of the first hole injection layer 102 by using a first mask.
  • the first organic light-emitting layer 104 is a red light-emitting layer
  • the first precision light-emitting layer is vapor-deposited on the surface of the first hole transport layer 102; when the first organic light-emitting layer 104 is a green light-emitting layer, the second precision is used.
  • the mask is evaporated on the surface of the first hole transport layer 102.
  • the hole injection layer 112 is formed by sequentially depositing a first mask.
  • the second anode 113 is evaporated on the surface of the second hole injection layer 112 by using a second mask.
  • the second organic light-emitting layer 110 and the first hole injection layer 102, the first hole transport layer 103, the first electron transport layer 105, the first electron injection layer 106, the charge generation layer 107, the second electron injection layer 108, The second electron transport layer 109, the second hole transport layer 111, and the second hole injection layer 112 are all distributed on the display panel, so that a precision mask is not required, and a general mask is used.
  • the manufacturing can be completed, and the first organic light-emitting layer 104 needs to be distinguished by a red light-emitting layer or a green light-emitting layer during fabrication, so a precision mask having higher precision is required, and the red light-emitting layer and the green light-emitting layer are distributed.
  • the position is different, so the first precision mask is used in the production of the red light-emitting layer, and the second precision mask is used in the production of the green light-emitting layer.
  • the second anode 113 is also distributed over the entire surface, so that a general mask can be used, but the second anode 113 needs to overlap the surrounding leads, and thus is inconsistent with the masks used in other layers.
  • the functional layer of the organic electroluminescent device of the present embodiment may be formed by other processes, which is not limited herein.
  • the organic electroluminescent device is equivalent to two light emitting diodes in which the negative electrodes are butted, so that the direct current cannot pass, and the organic electroluminescent device cannot Light is emitted, so this embodiment requires an AC power source to drive the light.
  • the present embodiment can effectively reduce the occupied space required for displaying the three primary colors by connecting two OLED light-emitting devices at both ends of the charge generating layer and providing two light-emitting layers in one organic electroluminescent device.
  • the entire manufacturing process only requires the use of two precision masks, which makes it difficult to prepare the display panel, improve product yield and save costs.
  • FIG. 2 is a schematic structural diagram of an embodiment of a display panel provided by the invention.
  • the display panel 20 includes a plurality of organic electroluminescent devices 21, a driving circuit 22, and a substrate 23 as shown in FIG.
  • the driving circuit 22 is coupled to the organic electroluminescent device 21, and the organic electroluminescent device 21 includes a first organic light emitting layer 2104 and a second organic light emitting layer 2110 (other layers are not shown, see the structure shown in FIG. 1) according to the above implementation.
  • the organic electroluminescent device 21 requires an AC power source to drive, and the driving circuit 22 can provide a high frequency alternating current with a frequency of 100 Hz to 1 MHz.
  • both the first organic light-emitting layer 2104 and the second organic light-emitting layer 2110 emit light.
  • the driving circuit 22 may further include a filtering circuit (not shown), and may filter the pulse signal outputted by the driving circuit 22 such that the pulse signal outputted by the driving circuit 22 is only a forward pulse signal or a reverse pulse signal.
  • the driving circuit 22 supplies a forward pulse signal
  • the first organic light emitting layer 2104 emits light
  • the driving circuit 22 provides a reverse pulse signal
  • the second organic light emitting layer 2110 emits light.
  • the first organic light-emitting layer and the second organic light-emitting layer of the organic electroluminescent device are controlled to emit light separately or simultaneously by different pulse signals provided by the driving circuit, which can meet different display requirements.
  • FIG. 3 is a schematic structural diagram of a first embodiment of an arrangement of an organic electroluminescent device on a display panel provided by the present invention.
  • the organic electroluminescent device in which the first organic light-emitting layer is the second primary light-emitting layer and the organic electroluminescent device in which the first organic light-emitting layer is the third primary light-emitting layer are spaced apart on the substrate.
  • the first primary color is blue B
  • the second primary color is red R
  • the third primary color is green G.
  • the first organic light-emitting layer is a red light-emitting layer organic electroluminescent device and The organic electroluminescent device in which the first organic light-emitting layer is a green light-emitting layer is spaced apart on the substrate.
  • the second organic light-emitting layers are all blue light-emitting layers. Since the lifetime of the blue light-emitting layer is shorter than that of the red light-emitting layer and the green light-emitting layer, the entire surface of the blue light-emitting layer is disposed near the transparent second anode, so that the light emitted by the blue light-emitting layer is lost during transmission.
  • the second organic light-emitting layer is blue, so the power of the blue light-emitting layer of a single organic electroluminescent device is relatively low, which contributes to prolonging the service life of the organic electroluminescent device and the display panel.
  • the organic electroluminescent device in which the first organic light emitting layer is a blue light emitting layer and the organic electroluminescent device in which the first organic light emitting layer is a green light emitting layer may be spaced apart on the substrate or may also be The organic electroluminescent device in which the first organic light-emitting layer is a blue light-emitting layer and the organic electroluminescent device in which the first organic light-emitting layer is a red light-emitting layer are spaced apart on the substrate.
  • the organic light-emitting device in which the second organic light-emitting layer is blue the first organic light-emitting layer is a red light-emitting layer
  • the organic light-emitting layer in which the first organic light-emitting layer is a green light-emitting layer The devices are spaced apart on the substrate, which can effectively extend the service life of the organic electroluminescent device and the display panel, and can reduce the space required for displaying the three primary colors and improve the pixel resolution.
  • FIG. 4 is a schematic structural diagram of a second embodiment of an arrangement of an organic electroluminescent device on a display panel provided by the present invention.
  • the first organic light emitting layer 404 and the second organic light emitting layer 410 of the electroluminescent device 40 are shown in FIG.
  • the organic electroluminescent device 40 having the plurality of first organic light-emitting layers 404 as the second primary light-emitting layer is a first organic electroluminescent device group 40b, and the plurality of first organic light-emitting layers 404 are the third primary color light.
  • the organic electroluminescent device 40 of the light-emitting layer is a second organic electroluminescent device group 40a on which the first organic electroluminescent device group and the second organic electroluminescent device group are spaced apart.
  • the first primary color is blue B
  • the second primary color is red R
  • the third primary color is green G.
  • the two first organic light-emitting layers are organic light-emitting layers of the red light-emitting layer.
  • the light emitting device is a first organic electroluminescent device group, and the organic electroluminescent device in which the two first organic light emitting layers are green light emitting layers is a second organic electroluminescent device group, and the first organic electroluminescent device group And a second organic electroluminescent device group is disposed on the substrate at intervals.
  • the organic electroluminescent device may be composed of three, four or more organic electroluminescent devices in which the first organic light emitting layer is red or green, and the first organic electroluminescent device.
  • the number of organic electroluminescent devices included in the group is not necessarily equal to the number of organic electroluminescent devices included in the second organic electroluminescent device group, and the brightness of the first organic light-emitting layer can be adjusted to make the first
  • the light emitted by the group of organic electroluminescent device and the second group of organic electroluminescent devices combines the light of the desired color and achieves the desired intensity of light.
  • the organic electroluminescent device having the same color of the plurality of first organic light-emitting layers is composed of the organic electroluminescent device group, which can reduce the difficulty of fabrication, improve the yield, and reduce the production cost.
  • the present invention connects two mutually oppositely disposed OLED devices through a charge generating layer, such that one organic electroluminescent device comprises two organic light emitting layers, and the second organic light emitting layer is a first primary light emitting layer, An organic light-emitting layer is a second primary light-emitting layer or a third primary-color light-emitting layer, so that the occupied space required for displaying the three primary colors is reduced, and the pixel resolution is improved; and the first organic light-emitting of the organic electroluminescent device is controlled by the driving circuit.
  • the layer and the second organic light-emitting layer respectively emit light or simultaneously emit light to meet different display needs; the number of times of using the precision mask can be reduced in the manufacturing process, the difficulty in preparing the display panel is reduced, the product yield is improved, and the cost is saved.

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

Abstract

一种有机电致发光器件和显示面板，该有机电致发光器件包括：依次叠置的第一阳极（101）、第一空穴注入层（102）、第一空穴传输层（103）、发出第二基色或第三基色光线的第一有机发光层（104）、第一电子传输层（105）、第一电子注入层（106）、电荷产生层（107）、第二电子注入层（108）、第二电子传输层（109）、发出第一基色光线的第二有机发光层（110）、第二空穴传输层（111）、第二空穴注入层（112）、第二阳极（113），能降低制备显示面板的难度，提高像素分辨率，提高产品良率及节省成本。

Description

一种有机电致发光器件和显示面板
【技术领域】
本发明涉及显示领域，特别是涉及一种有机电致发光器件和显示面板。
【背景技术】
与液晶显示面板相比，OLED（Organic Light-Emitting Diode，有机发光二极管）显示面板具有能耗低，生产成本低，自发光，视角广，响应速度快等优点。随着OLED显示器的彩色化、高分辨率和大面积化，对金属荫罩图形尺寸精度及定位精度提出了更加苛刻的要求。
通过压缩像素排布空间来提高像素分辨率难度很大、成本很高、良品率很低，制备过程用五道FMM（Fine Metal Mask，高精度金属掩模板）时会遇到良品率低、制备成本较高等问题。
【发明内容】
本发明主要目的在于提供涉及一种有机电致发光器件和显示面板，能够降低制备显示面板的难度，提高像素分辨率，提高产品良率以及节省成本。
为实现上述目的，本发明采用的一个技术方案是：提供一种有机电致发光器件，包括：依次叠置的第一阳极、第一空穴注入层、第一空穴传输层、第一有机发光层、第一电子传输层、第一电子注入层、电荷产生层、第二电子注入层、第二电子传输层、第二有机发光层、第二空穴传输层、第二空穴注入层、第二阳极；其中，所述第二有机发光层为第一基色光发光层，所述第一有机发光层为第二基色光发光层或者第三基色光发光层。
为实现上述目的，本发明采用的另一个技术方案是：提供一种显示面板，包括基板、驱动电路和设置于基板上的若干个如上所述的有机电致发光器件；所述驱动电路耦接所述有机电致发光器件，用于控制所述有机电致发光器件的所述第一有机发光层和所述第二有机发光层分别或者同时发光。
本发明的有益效果是：区别于现有技术的情况，本发明通过在一正向的OLED器件结构上，加上一个倒置的OLED器件结构，且在两者间加入一层电荷产生层，使得一个有机电致发光器件包括两个发光层，其中，第二有机发光层为第一基色光发光层，第一有机发光层为第二基色光发光层或者第三基色光发光层，显示三基色所需的占有空间减少，提高了像素分辨率；第二有机发光层为第一基色光发光层，因此在制作第二有机发光层时无需使用FMM，使用一般的掩膜板即可达到要求，降低制备显示面板的难度，提高产品良率以及节省成本。
【附图说明】
图1是本发明提供的有机电致发光器件实施例的结构示意图；
图2是本发明提供的显示面板实施例的结构示意图；
图3是本发明提供的显示面板上有机电致发光器件设置方式的第一实施例的结构示意图；
图4是本发明提供的显示面板上有机电致发光器件设置方式的第二实施例的结构示意图。
【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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，均属于本发明保护的范围。
请参阅图1，图1是本发明提供的有机电致发光器件实施例的结构示意图。有机电致发光器件10包括依次叠置的第一阳极101、第一空穴注入层102、第一空穴传输层103、第一有机发光层104、第一电子传输层105、第一电子注入层106、电荷产生层107、第二电子注入层108、第二电子传输层109、第二有机发光层110、第二空穴传输层111、第二空穴注入层112、第二阳极113。
在本实施例中，第二阳极113为透明材质，这样第一有机发光层104和第二有机发光层110发出的光线才能透出。在其他实施例中，也可以是第一阳极101为透明材质，或者第一阳极101与第二阳极113均为透明材质。
第二有机发光层110为第一基色光发光层，第一有机发光层104为第二基色光发光层或者第三基色光发光层。在本实施例中，第一基色光为蓝光，第二基色光为红光，第三基色光为绿光。即第二有机发光层110为蓝光发光层，第一有机发光层104为红光或者绿光发光层。这样设置是因为蓝光发光层的寿命较红光发光层或者绿光发光层而言较短，因此将红光发光层或者绿光发光层设置在第一有机发光层104的位置，其发出的光线传输到第二阳极113并透射出去时，光线的损耗比设置在第二有机发光层110的蓝光发光层发出的光线传输到第二阳极113并透射出去的损耗大，因此设置在第一有机发光层104的位置的红光发光层或者绿光发光层的功率设置的比设置在第二有机发光层110的蓝光发光层大，才能发出更强的光线，使得无论什么颜色的光线在透射出第二阳极113时光线强度相等，所以将寿命更短的蓝光发光层设置在第二有机发光层110的位置，可以有效降低蓝光发光层的损耗，延长有机电致发光器件的使用寿命。
可以理解的是，本实施例仅为考虑基色光寿命而列举上述两层有机发光层的基色分配方式。在其他实施例中，第一有机发光层104和第二有机发光层110可以是三基色的发光层的任意组合，例如第一有机发光层104可以为红色发光层，第二有机发光层110可以为绿色发光层或者蓝色发光层；或者例如第一有机发光层104可以为绿色发光层，第二有机发光层110可以为红色发光层或者蓝色发光层。
本实施例，在制作过程中，第一空穴注入层102采用第一掩膜板蒸镀在第一阳极101的表面。第一空穴传输层103采用第一掩膜板蒸镀在第一空穴注入层102的表面。第一有机发光层104为红光发光层时，采用第一精密掩膜板蒸镀在第一空穴传输层102的表面；第一有机发光层104为绿光发光层时，采用第二精密掩膜板蒸镀在第一空穴传输层102的表面。第一电子传输层105、第一电子注入层106、电荷产生层107、第二电子注入层108、第二电子传输层109、第二有机发光层110、第二空穴传输层111、第二空穴注入层112采用第一掩膜板依次蒸镀而成。第二阳极113采用第二掩膜板蒸镀在第二空穴注入层112表面。
由于第二有机发光层110与第一空穴注入层102、第一空穴传输层103、第一电子传输层105、第一电子注入层106、电荷产生层107、第二电子注入层108、第二电子传输层109、第二空穴传输层111、第二空穴注入层112在显示面板上均是整面同结构的分布，因此不需要采用精密掩膜板，采用一般的掩膜板即可完成制造，而第一有机发光层104在制造时需要区分是红光发光层还是绿光发光层，因此需要精度更高的精密掩膜板，且红光发光层与绿光发光层分布的位置不同，因此在制作红光发光层时采用第一精密掩膜板，在制作绿光发光层时采用第二精密掩膜板。第二阳极113也是整面分布，因此采用一般的掩膜板即可，但第二阳极113需要搭接周围的引线，因此与其他层采用的掩膜板不一致。
当然，在其他实施例中，本实施例有机电致发光器件上述功能层也可采用其他工艺形成，在此不作限定。
针对本实施例有机电致发光器件的驱动方式，由于其电荷产生层位于中间，该有机电致发光器件相当于两个负极对接的发光二极管，因此直流电流无法通过，该有机电致发光器件无法发光，故本实施例需要采用交流电源才能驱动发光。
通过上述描述可知，本实施例通过在电荷产生层的两端连接两个OLED发光装置，在一个有机电致发光装置内设置两个发光层，可以有效减少显示三基色所需的占有空间，提高了像素分辨率，整个制造过程只需要使用两块精密掩膜板，低制备显示面板的难度，提高产品良率以及节省成本。
请参阅图2，图2是发明提供的显示面板实施例的结构示意图。显示面板20包括若干个如图1所示的有机电致发光器件21、驱动电路22和基板23。驱动电路22耦接有机电致发光器件21，有机电致发光器件21包括第一有机发光层2104和第二有机发光层2110（其他层图未示，可参阅图1所示结构）根据上述实施例描述可知，有机电致发光器件21需要交流电源才能驱动，驱动电路22可以提供频率为100Hz-1MHz的高频交流电。当驱动电路22提供完整的脉冲信号时，第一有机发光层2104和第二有机发光层2110均发光。驱动电路22中还可以包括滤波电路（图未示），可以对驱动电路22输出的脉冲信号进行滤波，使得驱动电路22输出的脉冲信号仅为正向脉冲信号或反向脉冲信号。当驱动电路22提供正向脉冲信号时，第一有机发光层2104发光，当驱动电路22提供反向脉冲信号时，第二有机发光层2110发光。
通过上述描述可知，本实施例通过驱动电路提供的不同的脉冲信号控制有机电致发光器件的第一有机发光层和第二有机发光层分别或者同时发光，可以满足不同的显示需求。
请参阅图3，图3是本发明提供的显示面板上有机电致发光器件设置方式的第一实施例的结构示意图，为了清楚的展示设置方式，在图3中仅仅显示了本发明中的有机电致发光器件30的第一有机发光层304和第二有机发光层310。第一有机发光层为第二基色发光层的有机电致发光器件和第一有机发光层为第三基色发光层的有机电致发光器件在所述基板上间隔设置。在本实施例中，第一基色为蓝色B，第二基色为红色R，第三基色为绿色G，如图3所示，第一有机发光层为红色发光层的有机电致发光器件和第一有机发光层为绿色发光层的有机电致发光器件在基板上间隔设置。第二有机发光层都是蓝色发光层。因为蓝色发光层的寿命较红色发光层和绿色发光层较短，因此将蓝色发光层整面设置于靠近透明的第二阳极的位置，这样蓝色发光层发出的光线传输过程中的损耗较少，且第二有机发光层都是蓝色，所以单独一个有机电致发光器件的蓝色发光层的功率也相对较低，有助于延长有机电致发光器件和显示面板的使用寿命。
在其他实施例中，还可以是第一有机发光层为蓝色发光层的有机电致发光器件和第一有机发光层为绿色发光层的有机电致发光器件在基板上间隔设置或者是还可以是第一有机发光层为蓝色发光层的有机电致发光器件和第一有机发光层为红色发光层的有机电致发光器件在基板上间隔设置。
通过上述描述可知，本实施例通过将第二有机发光层设置成蓝色，第一有机发光层为红色发光层的有机电致发光器件和第一有机发光层为绿色发光层的有机电致发光器件在基板上间隔设置，可以有效延长有机电致发光器件和显示面板的使用寿命，且可以减少显示三基色所需的占有空间，提高了像素分辨率。
请参阅图4，图4是本发明提供的显示面板上有机电致发光器件设置方式的第二实施例的结构示意图，为了清楚的展示设置方式，在图4中仅仅显示了本发明中的有机电致发光器件40的第一有机发光层404和第二有机发光层410。以多个第一有机发光层404为第二基色光发光层的有机电致发光器40件为一第一有机电致发光器件组40b，以多个第一有机发光层404为第三基色光发光层的有机电致发光器件40为一第二有机电致发光器件组40a，第一有机电致发光器件组与第二有机电致发光器件组在所述基板上间隔设置。在本实施例中，第一基色为蓝色B，第二基色为红色R，第三基色为绿色G，如图4所示，两个第一有机发光层为红色光发光层的有机电致发光器件为一第一有机电致发光器件组，两个第一有机发光层为绿色光发光层的有机电致发光器件为一第二有机电致发光器件组，第一有机电致发光器件组与第二有机电致发光器件组在所述基板上间隔设置。
在其他实施例中，还可以是三个、四个或者更多个第一有机发光层同为红色或者绿色的有机电致发光器件组成有机电致发光器件组，且第一有机电致发光器件组中包含的有机电致发光器件的个数与第二有机电致发光器件组中包含的有机电致发光器件的个数不一定相等，可以通过调整第一有机发光层的亮度，使得第一有机电致发光器件组和第二有机电致发光器件组发出的光线组合出需要的颜色的光线以及达到需要的光线强度。
通过上述描述可知，本实施例通过将多个第一有机发光层发光颜色一致的有机电致发光器件组成有机电致发光器件组，可以减少制作的难度，提高良率，降低生产成本。
区别于现有技术，本发明通过电荷产生层连接两个相互对立设置的OLED器件，使得一个有机电致发光器件包含两个有机发光层，第二有机发光层为第一基色光发光层，第一有机发光层为第二基色光发光层或者第三基色光发光层，这样显示三基色所需的占有空间减少，提高了像素分辨率；通过驱动电路控制有机电致发光器件的第一有机发光层和第二有机发光层分别发光或者同时发光，满足不同的显示需要；在制造过程中可以减少使用精密掩膜板的次数，降低制备显示面板的难度，提高产品良率以及节省成本。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种有机电致发光器件，其中，包括：
    依次叠置的第一阳极、第一空穴注入层、第一空穴传输层、第一有机发光层、第一电子传输层、第一电子注入层、电荷产生层、第二电子注入层、第二电子传输层、第二有机发光层、第二空穴传输层、第二空穴注入层、第二阳极；
    其中，所述第二有机发光层为第一基色光发光层，所述第一有机发光层为第二基色光发光层或者第三基色光发光层；
    所述第一空穴注入层采用第一掩膜板蒸镀在所述第一阳极表面；
    所述第一空穴传输层采用第一掩膜板蒸镀在所述第一空穴注入层表面；
    所述第一电子传输层、所述第一电子注入层、所述电荷产生层、所述第二电子注入层、所述第二电子传输层、所述第二有机发光层、所述第二空穴传输层、所述第二空穴注入层采用第一掩膜板依次蒸镀而成。
  2. 根据权利要求1所述的有机电致发光器件，其中，
    所述第一基色光为蓝光，所述第二基色光为红光，所述第三基色光为绿光。
  3. 根据权利要求2所述的有机电致发光器件，其中，
    所述第一有机发光层为红光发光层时，采用第一精密掩膜板蒸镀在所述第一空穴传输层表面；
    所述第一有机发光层为绿光发光层时，采用第二精密掩膜板蒸镀在所述第一空穴传输层表面。
  4. 根据权利要求1所述的有机电致发光器件，其中，
    所述第二阳极采用第二掩膜板蒸镀在所述第二空穴注入层表面
  5. 一种有机电致发光器件，其中，包括：
    依次叠置的第一阳极、第一空穴注入层、第一空穴传输层、第一有机发光层、第一电子传输层、第一电子注入层、电荷产生层、第二电子注入层、第二电子传输层、第二有机发光层、第二空穴传输层、第二空穴注入层、第二阳极；
    其中，所述第二有机发光层为第一基色光发光层，所述第一有机发光层为第二基色光发光层或者第三基色光发光层。
  6. 根据权利要求5所述的有机电致发光器件，其中，
    所述第一空穴注入层采用第一掩膜板蒸镀在所述第一阳极表面；
    所述第一空穴传输层采用第一掩膜板蒸镀在所述第一空穴注入层表面。
  7. 根据权利要求5所述的有机电致发光器件，其中，
    所述第一基色光为蓝光，所述第二基色光为红光，所述第三基色光为绿光。
  8. 根据权利要求7所述的有机电致发光器件，其中，
    所述第一有机发光层为红光发光层时，采用第一精密掩膜板蒸镀在所述第一空穴传输层表面；
    所述第一有机发光层为绿光发光层时，采用第二精密掩膜板蒸镀在所述第一空穴传输层表面。
  9. 根据权利要求5所述的有机电致发光器件，其中，
    所述第一电子传输层、所述第一电子注入层、所述电荷产生层、所述第二电子注入层、所述第二电子传输层、所述第二有机发光层、所述第二空穴传输层、所述第二空穴注入层采用第一掩膜板依次蒸镀而成。
  10. 根据权利要求5所述的有机电致发光器件，其中，
    所述第二阳极采用第二掩膜板蒸镀在所述第二空穴注入层表面。
  11. 根据权利要求5所述的有机电致发光器件，其中，
    所述第二阳极采用透明材质；所述有机电致发光器件采用交流电源驱动。
  12. 一种显示面板，其中，包括基板、驱动电路和设置于基板上的若干个有机电致发光器件；
    所述有机电致发光器件包括：
    依次叠置的第一阳极、第一空穴注入层、第一空穴传输层、第一有机发光层、第一电子传输层、第一电子注入层、电荷产生层、第二电子注入层、第二电子传输层、第二有机发光层、第二空穴传输层、第二空穴注入层、第二阳极；
    其中，所述第二有机发光层为第一基色光发光层，所述第一有机发光层为第二基色光发光层或者第三基色光发光层；
    所述驱动电路耦接所述有机电致发光器件，用于控制所述有机电致发光器件的所述第一有机发光层和所述第二有机发光层发光。
  13. 根据权利要求12所述的显示面板，其中，
    所述第一空穴注入层采用第一掩膜板蒸镀在所述第一阳极表面；
    所述第一空穴传输层采用第一掩膜板蒸镀在所述第一空穴注入层表面。
  14. 根据权利要求12所述的显示面板，其中，
    所述第一基色光为蓝光，所述第二基色光为红光，所述第三基色光为绿光。
  15. 根据权利要求14所述的显示面板，其中，
    所述第一有机发光层为红光发光层时，采用第一精密掩膜板蒸镀在所述第一空穴传输层表面；
    所述第一有机发光层为绿光发光层时，采用第二精密掩膜板蒸镀在所述第一空穴传输层表面。
  16. 根据权利要求12所述的显示面板，其中，
    所述第一电子传输层、所述第一电子注入层、所述电荷产生层、所述第二电子注入层、所述第二电子传输层、所述第二有机发光层、所述第二空穴传输层、所述第二空穴注入层采用第一掩膜板依次蒸镀而成。
  17. 根据权利要求12所述的显示面板，其中，
    所述第二阳极采用第二掩膜板蒸镀在所述第二空穴注入层表面。
  18. 根据权利要求12所述的显示面板，其中，
    所述第二阳极采用透明材质；所述有机电致发光器件采用交流电源驱动。
  19. 根据权利要求12所述的显示面板，其中，
    所述第一有机发光层为第二基色发光层的所述有机电致发光器件和所述第一有机发光层为第三基色发光层的所述有机电致发光器件在所述基板上间隔设置。
  20. 根据权利要求12所述的显示面板，其中，
    以多个所述第一有机发光层为第二基色光发光层的有机电致发光器件为一第一有机电致发光器件组，以多个所述第一有机发光层为第三基色光发光层的有机电致发光器件为一第二有机电致发光器件组，所述第一有机电致发光器件组与所述第二有机电致发光器件组在所述基板上间隔设置。
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