WO2023103018A1 - 柔性显示面板和柔性显示面板的制备方法 - Google Patents

柔性显示面板和柔性显示面板的制备方法 Download PDF

Info

Publication number
WO2023103018A1
WO2023103018A1 PCT/CN2021/138900 CN2021138900W WO2023103018A1 WO 2023103018 A1 WO2023103018 A1 WO 2023103018A1 CN 2021138900 W CN2021138900 W CN 2021138900W WO 2023103018 A1 WO2023103018 A1 WO 2023103018A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
light
sublayer
light emitting
mechanoluminescent
Prior art date
Application number
PCT/CN2021/138900
Other languages
English (en)
French (fr)
Inventor
覃事建
郑子明
Original Assignee
Tcl华星光电技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tcl华星光电技术有限公司 filed Critical Tcl华星光电技术有限公司
Priority to US17/597,234 priority Critical patent/US20230180511A1/en
Publication of WO2023103018A1 publication Critical patent/WO2023103018A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • 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
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
    • 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
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present application relates to the field of display technology, in particular to a flexible display panel and a method for preparing the flexible display panel.
  • OLED Organic Light-Emitting Diode
  • OLED has the characteristics of high brightness, wide range of material selection, low driving voltage, full-cure active light emission, etc., and has the advantages of high definition, wide viewing angle, and fast response speed.
  • OLED Organic Light-Emitting Diode
  • An embodiment of the present application provides a flexible display panel, including:
  • the light-emitting layer comprising a light-emitting surface
  • the mechanoluminescent layer is arranged on one side of the light-emitting surface of the luminescent layer, and the mechanoluminescent layer is used for absorbing the stress generated when the flexible display panel is bent and reducing the stress converted into optical signals.
  • the embodiment of the present application also provides a method for preparing a flexible display panel, the preparation method comprising:
  • the light-emitting layer comprising a light-emitting surface
  • a mechanoluminescent layer is disposed on one side of the luminous surface of the luminescent layer, and the mechanoluminescent layer is used to absorb the stress generated when the flexible display panel is bent and convert the stress into an optical signal for emission.
  • the flexible display panel provided in the embodiment of the present application includes a luminescent layer and a mechanoluminescent layer, the mechanoluminescent layer is arranged on the side of the luminescent layer having a luminous surface, and the mechanoluminescent layer is used to absorb the stress generated when the flexible display panel is bent, And the stress is converted into light signals, and part of the stress is converted into light energy through the mechanoluminescent layer, which reduces the stress accumulation in the bending part, so that the bonding force between the cathode and the OLED film interface is relatively enhanced, thereby avoiding the cathode of the OLED device. It is peeled off from the OLED film layer, thereby solving the problem that the stress concentration area of the flexible display panel is prone to failure.
  • FIG. 1 is a schematic diagram of a first structure of a flexible display panel provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a mechanoluminescent layer in a flexible display panel provided by an embodiment of the present application;
  • Fig. 3 is a second structural schematic diagram of the flexible display panel provided by the embodiment of the present application.
  • FIG. 4 is a first schematic flow chart of the method for manufacturing a flexible display panel provided in the embodiment of the present application
  • Fig. 5 is a schematic flow chart of preparing a mechanoluminescent layer in the preparation method shown in Fig. 4;
  • FIG. 6 is a second schematic flowchart of a method for manufacturing a flexible display panel provided in an embodiment of the present application.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of said features.
  • “plurality” means two or more, unless otherwise specifically defined.
  • the present application proposes a flexible display panel and a method for preparing the flexible display panel.
  • the present application will be further described below in conjunction with the accompanying drawings and embodiments.
  • FIG. 1 is a schematic diagram of a first structure of a flexible display panel provided by an embodiment of the present application.
  • the embodiment of the present application provides a flexible display panel 100, the flexible display panel 100 includes a luminescent layer 20 and a mechanoluminescent layer 10, wherein the luminescent layer 20 includes a luminescent surface, and the mechanoluminescent layer 10 is disposed on the luminescent surface of the luminescent layer 20 side.
  • the mechanoluminescent layer 10 is used to absorb the stress generated when the flexible display panel 100 is bent and convert the stress into light signals for emission.
  • the mechanoluminescent layer 10 is arranged on one side of the light-emitting surface of the luminescent layer 20, so that the stress generated when the flexible display panel 100 is curled or folded can be absorbed by the mechanoluminescent layer 10 and converted into light energy for emission.
  • the damage to the light-emitting layer 20 caused by the stress during the folding or bending process can be buffered through the mechanoluminescent layer 10 , and the corresponding light can be emitted through the mechanoluminescent layer 10 to compensate the light of the light-emitting layer 20 .
  • the flexible display panel 100 with the mechanoluminescent layer 10 can compensate the light intensity emitted by the luminescent layer 20, so as to reduce the luminous intensity of the luminescent layer 20, thereby extending the length of the luminescent layer.
  • the lifetime of the luminescent material in 20 improves the stability of the flexible display panel 100 .
  • the light emitting layer 20 includes a red light emitting unit 210 , a green light emitting unit 220 and a blue light emitting unit 230 arranged at intervals.
  • the red light emitting unit 210 is used for emitting red light
  • the green light emitting unit 220 is used for emitting green light
  • the blue light emitting unit 230 is used for emitting blue light.
  • the red light emitting unit 210, the green light emitting unit 220 and the blue light emitting unit 230 can constitute the smallest group for realizing white light.
  • the red light emitting unit 210, the green light emitting unit 220 and the blue light emitting unit 230 Can be repeatedly arranged to display images.
  • the mechanoluminescent layer 10 includes a mechanoluminescent sublayer 130, which has a mechanoluminescent (ML) effect, and realizes the conversion from mechanical stress to visible light emission through the coupling effect between piezoelectric effect and photoexcitability , that is, the ML process.
  • ML mechanoluminescent
  • Mechanoluminescence (ML) refers to the phenomenon that an object converts mechanical energy into light energy through a series of conversions when it is subjected to an external force.
  • the luminescence generally has high repeatability, and within a certain range, the intensity of the ML spectrum has a good linear relationship with the mechanical force.
  • the mechanoluminescence sub-layer 130 includes a red mesoluminescent unit 131 disposed opposite to the red light emitting unit 210, a green mesoluminescent unit 132 disposed opposite to the green light emitting unit 220, and a blue mesoluminescent unit 132 disposed opposite to the blue light emitting unit 230.
  • Light emitting unit 133 Exemplarily, the red meroluminescent unit 131 absorbs stress and converts to emit red light, the green metroluminescent unit 132 absorbs stress and converts to emit green light, and the blue metroluminescent unit 133 absorbs stress and converts to emit blue light.
  • the mechanoluminescent sub-layer 130 By setting the mechanoluminescent sub-layer 130 corresponding to the color of the luminescent layer 20 , the luminous intensity of the luminescent layer 20 can be compensated, thereby prolonging the life of the luminescent material in the luminescent layer 20 .
  • the light-emitting area of the red light-emitting unit 210, the light-emitting area of the green light-emitting unit 220, and the light-emitting area of the blue light-emitting unit 230 in the mechanoluminescent unit are respectively different from those of the red mecoluminescent unit 131, the green mecoluminescent unit 132 and the blue mecoluminescent unit.
  • the light emitting areas of the light emitting units 133 may or may not be uniform.
  • the light emitting area of the red light emitting unit 210 is smaller than or equal to the light emitting area of the red mechanoluminescent unit 131
  • the light emitting area of the green light emitting unit 220 is less than or equal to the light emitting area of the green mechanoluminescent unit 132
  • the light emitting area of the blue light emitting unit 230 is The light emitting area is smaller than or equal to the light emitting area of the blue meroluminescent unit 133 .
  • the light emitting area of the red light emitting unit 210 is the same as that of the red mechanoluminescent unit 131
  • the light emitting area of the green light emitting unit 220 is the same as that of the green mechanoluminescent unit 132
  • the light emitting area of the blue light emitting unit 230 is the same.
  • the light emitting area is the same as that of the blue meroluminescent unit 133 .
  • the uniform light emitting area of the mechanoluminescent unit 133 can make the stress absorbed by the mechanoluminescent sublayer 130 more comprehensive, thereby protecting the light emitting layer 20 more comprehensively and preventing the light emitting layer 20 from being affected by the stress.
  • the light emitting area of the red light emitting unit 210 may also be larger than the light emitting area of the red mechanoluminescent unit 131, the light emitting area of the green light emitting unit 220 is larger than the light emitting area of the green mechanoluminescent unit 132, and the blue light emitting unit 230 The light emitting area of the blue electroluminescent unit 133 is larger than that of the blue mechanoluminescent unit 133 .
  • the light emitting area of the red light emitting unit 210 is smaller than the light emitting area of the red mechanoluminescent unit 131
  • the light emitting area of the green light emitting unit 220 is larger than the light emitting area of the green mechanoluminescent unit 132
  • the light emitting area of the blue light emitting unit 230 is larger than that of the blue light emitting unit.
  • the light emitting area of the red light emitting unit 210, the light emitting area of the green light emitting unit 220 and the light emitting area of the blue light emitting unit 230 in the mechanoluminescent unit are respectively different from those of the red mecoluminescent unit 131 and the green mecoluminescent unit 132.
  • the size relationship with the light-emitting area of the blue mecoluminescent unit 133 can be set according to the actual situation, and is not specifically limited here. It only needs to ensure that the mecoluminescent layer 10 is arranged on one side of the light-emitting surface of the light-emitting layer 20. .
  • the mechanoluminescent sub-layer 130 may include one or a combination of mechanoluminescent materials or systems such as ZnS:Mn 2+ , ZnS:Cu 2+ , tetraphenylethylene, etc., whose emission wavelength matches the RGB luminescence requirements.
  • the mechanoluminescent layer 10 further includes an electron transport sublayer 140, a charge generation sublayer 110 and a first hole transport layer 120, wherein the electron transport sublayer 140 is disposed on the side of the mecoluminescent sublayer 130 away from the light emitting layer 20, The electron transport sublayer 140 is used to provide electrons to the mechanoluminescent sublayer 130 .
  • the charge generation sublayer 110 is disposed on a side of the mechanoluminescent sublayer 130 away from the electron transport sublayer 140 , and the charge generation layer is used to provide electrons to the electron transport sublayer 140 .
  • the first hole transport layer 120 is disposed between the charge generation sublayer 110 and the mechanoluminescence sublayer 130 for transporting the holes in the charge generation sublayer 110 to the mecoluminescence sublayer 130 .
  • the charge generation sublayer 110 has different n-type or organic p-type doping concentrations in different distribution regions. Because the stress generated when the flexible display panel 100 is rolled or folded is different, the luminous intensity generated by the mechanoluminescent sub-layer 130 by absorbing the stress is inconsistent, and the luminous intensity of the mechanoluminescent sub-layer 130 is also distributed in a certain area. , so that the flexible display panel 100 emits light unevenly. Therefore, in the embodiment of the present application, the charge generation sublayer 110 is set with different doping concentrations according to the stress distribution, so that under the same driving voltage, the charge generation sublayer 110 with different doping concentrations generates different electron energies to mechanoluminescence photons. layer 130 to compensate for the problem of different luminous intensities of the luminous sub-layers caused by different stresses, thereby enabling the flexible display panel 100 to emit light uniformly.
  • the charge generation sublayer 110 includes a first charge generation layer 111 disposed opposite to the red light emitting unit 210, a second charge generation layer 112 disposed opposite to the green light emitting unit 220, and a second charge generation layer 112 disposed opposite to the blue light emitting unit 230.
  • Three charge generation layers 113 when the stress of the region corresponding to the green light emitting unit 220 is greater than the stress of the region corresponding to the red light emitting unit 210 and the stress of the region corresponding to the blue light emitting unit 230, the doping ratio of the first charge generation layer 111 and the third charge The doping ratio of the generating layer 113 is smaller than that of the second charge generating layer 112 .
  • the flexible display panel 100 includes a bending region, and the stress in the central region of the bending region is greater than the stress at the sides of the bending region, so the doping concentration of the charge generation sublayer 110 located at the side of the bending region is optimal, and the charge The doping concentration of the sub-layer 110 gradually increases or decreases along the direction from the side of the bending region to the central region.
  • the doping concentration of the charge generation sublayer 110 gradually increases or decreases along the direction from the side of the bending region to the central region. It can be understood that the doping concentration of the charge generation sublayer 110 corresponding to the small stress When the doping concentration of the charge generating sub-layer 110 corresponding to the region with high stress gradually increases or decreases gradually, the efficiency of generating electrons in the charge generating sub-layer 110 will gradually decrease, which in turn can make the region with low stress The electron generation efficiency of the charge generation sublayer 110 in the region is higher than that of the charge generation sublayer 110 corresponding to the region with high stress.
  • the intensity of light energy emitted by the mechanoluminescent sub-layer 130 located in the central region of the bending region is greater than that in the sides of the bending region.
  • the intensity of the light energy emitted by the mechanoluminescence sub-layer 130 leads to non-uniform light emission of the display panel.
  • the charge generation sublayer 110 can generate more charges and transmit them to the mechanoluminescent sublayer 130 and the light emitting layer 20, making the mesoluminescent
  • the luminescent sub-layer 130 and the luminescent layer 20 increase the luminous intensity, which in turn can make the luminous intensity in the central region of the bending region close to the luminous intensity at the sides of the bending region, thereby solving the problem of uneven luminescence caused by different stresses. question.
  • the optimal doping concentration of the charge generation sublayer 110 means that the optimum current efficiency range of the red mesoluminescence unit 131 is 40-60 cd/A, and the optimum current efficiency range of the green mesoluminescence unit 132 is 100 cd/A.
  • the optimal current efficiency range of ⁇ 150 cd/A and blue mechanoluminescence unit 133 is 5 ⁇ 10 cd/A.
  • the mechanoluminescent layer 10 is arranged on the folding surface, and the doping concentration of the charge generation sublayer 110 is distributed along the folding surface, that is, the smaller the stress on the folding surface, the greater the charge generation.
  • the doping concentration of the sub-layer 110 is optimal.
  • the doping concentration of the charge generation sublayer 110 is distributed along the radial direction of the bending axis, that is, the smaller the stress on the scroll surface, the better the doping concentration of the charge generation sublayer 110 .
  • the doping concentration of the charge generation sub-layer 110 ranges from 1% to 30%.
  • mechanoluminescent layers 10 on one side of the light-emitting surface of the light-emitting layer 20, there are a plurality of mechanoluminescent layers 10 stacked on each other.
  • the mechanoluminescent layer 10 provided by stacking multiple layers can better reduce the problem that the stress concentration area is prone to failure.
  • FIG. 3 is a second structural schematic diagram of the flexible display panel provided by the embodiment of the present application.
  • the flexible display panel 100 adopted in the embodiment of the present application further includes a first electrode 50, an electron transport layer 30, a second hole transport layer 40, and a second electrode 60, wherein the first electrode 50 is arranged on the light emitting layer 20 away from the electroluminescence
  • the first electrode 50 may be an electrode that supplies holes to the light emitting layer 20, and may be referred to as an anode.
  • the second hole transport layer 40 is disposed between the light emitting layer 20 and the first electrode 50 for transporting holes from the first electrode 50 to the light emitting layer 20 .
  • the second electrode 60 is disposed on the side of the mechanoluminescent layer 10 away from the first electrode 50 , and the second electrode 60 is a cathode.
  • FIG. 4 is a schematic flow chart of a first method for manufacturing a flexible display panel provided in an embodiment of the present application.
  • the embodiment of the present application provides a method for manufacturing a display panel, which is applied to the flexible display panel 100.
  • the specific process of the method for manufacturing the flexible display panel 100 is as follows:
  • the light-emitting layer 20 is fabricated by a deposition method, wherein the light-emitting layer 20 includes red light-emitting units 210 , green light-emitting units 220 and blue light-emitting units 230 arranged at intervals.
  • the specific structure of the light-emitting layer 20 can be seen above, and will not be repeated here.
  • a mechanoluminescent layer is arranged on one side of the light-emitting surface of the light-emitting layer, and the mechanoluminescent layer is used to absorb the stress generated when the flexible display panel is bent, and convert the stress into an optical signal for emission.
  • a mechanoluminescent layer 10 is arranged on one side of the luminous surface of the luminescent layer 20, and the mechanoluminescent layer 10 absorbs the stress generated when the flexible display panel 100 is bent and converts the stress into an optical signal for emission, which can reduce the impact of the stress on the flexible display panel. 100 damage.
  • the detail of setting the mechanoluminescent layer 10 is shown in FIG. 5 .
  • FIG. 5 is a schematic flow chart of preparing the mechanoluminescent layer in the preparation method shown in FIG. 4 . The specific process is as follows:
  • the mechanoluminescence sub-layer 130 is fabricated on one side of the light-emitting surface of the light-emitting layer 20 by means of printing, vapor deposition, or the like.
  • a red mechanoluminescent unit 131 is disposed on one side of the light emitting surface of the red light emitting unit 210
  • a green mechanoluminescent unit 132 is disposed on one side of the light emitting surface of the green light emitting unit 220
  • a light emission of the blue light emitting unit 230 One side of the surface is provided with a blue electroluminescence unit 133 .
  • the mechanoluminescent sub-layer 130 can use one or a combination of mechanoluminescent materials or systems such as ZnS:Mn 2+ , ZnS:Cu 2+ , tetraphenylethylene, etc., and its emission wavelength matches the RGB emission requirements.
  • the first hole transport layer 120 is deposited on the side of the mechanoluminescence sublayer 130 away from the light emitting layer 20 , and the first hole transport layer 120 is used to transport holes from the charge generation sublayer 110 to the mecoluminescence sublayer 130 .
  • the charge generating sublayer 110 may be prepared by a solution method. Wherein, the charge generation sublayer 110 has different n-type or organic p-type doping concentrations in different distribution regions.
  • the stress in the central region of the bending region of the display panel is greater than the stress on the sides of the bending region, and the doping concentration of the charge generation sublayer 110 gradually increases or decreases along the direction from the side of the bending region to the central region, that is, the distribution
  • An electron transport sublayer 140 is deposited on the side of the charge generation sublayer 110 away from the light emitting layer 20 for providing electrons to the mechanoluminescent sublayer 130 .
  • FIG. 6 is a second schematic flowchart of a method for manufacturing a flexible display panel provided in an embodiment of the present application.
  • the embodiment of the present application provides a method for manufacturing the flexible display panel 100, and the specific process is as follows:
  • the first electrode 50 may be an electrode supplying holes to the light emitting layer 20, and may be referred to as an anode.
  • the second hole transport layer 40 is deposited on the first electrode 50 , and the second hole transport layer 40 is used for transporting holes from the first electrode 50 .
  • the red light emitting unit 210 , the green light emitting unit 220 and the blue light emitting unit 230 are respectively deposited on the side of the second hole transport layer 40 away from the first electrode 50 , see the above step 201 for details and will not be repeated here.
  • the electron transport layer 30 is deposited on the red light emitting unit 210 , the green light emitting unit 220 and the blue light emitting unit 230 of the light emitting layer 20 .
  • the mechanoluminescent layer 10 is fabricated on the side of the electron transport layer 30 away from the first electrode 50 , see step 102 for details, and will not be repeated here.
  • a second electrode 60 is fabricated on the side of the electron transport sublayer 140 of the mechanoluminescent layer 10 away from the first electrode 50 , wherein the second electrode 60 is a cathode.
  • the mechanoluminescent layer 10 absorbs the stress generated when the flexible display panel 100 is bent, and converts the stress into an optical signal to send out, reducing the stress of the bent part. accumulation, and compensate the light intensity emitted by the light emitting layer 20 , prolonging the life of the light emitting material in the light emitting layer 20 and improving the stability of the flexible display panel 100 .
  • the embodiment of the present application also provides that the flexible display panel 100 is provided with different n-type or organic p-type The doping concentration of the charge generation sub-layer 110 compensates the luminous intensity, so that the flexible display panel 100 emits uniform luminous intensity.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种柔性显示面板（100）和柔性显示面板（100）的制备方法，其中，柔性显示面板（100），包括：发光层（20），发光层包括发光面；力致发光层（10），力致发光层（10）设置在发光层（20）的发光面的一侧，力致发光层（10）用于吸收柔性显示面板（100）弯曲时产生的应力并将应力转换成光信号发出。通过力致发光层（10）将部分应力转换为光能，减小了弯曲部分应力积累，使得阴极与OLED膜层界面结合力相对增强，进而避免了OLED器件的阴极与OLED膜层之间剥离，从而解决了柔性显示面板（100）的应力集中区域容易发生失效的问题。

Description

柔性显示面板和柔性显示面板的制备方法 技术领域
本申请涉及显示技术领域，尤其涉及一种柔性显示面板和柔性显示面板的制备方法。
背景技术
有机发光二极管(Organic Light-Emitting Diode,简称为OLED)，具有亮度高、材料选择范围宽、驱动电压低、全固化主动发光等特性，同时拥有高清晰、广视角，以及响应速度快等优势，符合信息时代移动通信和信息显示的发展趋势，以及绿色照明技术的要求，是目前国内外众多研究者的关注重点。
技术问题
然而，现有的柔性有机发光二极管器件在弯曲或折叠时，使得OLED器件的阴极与OLED膜层之间容易发生剥离，从而导致柔性显示面板的应力集中区域容易失效。
技术解决方案
本申请实施例提供一种柔性显示面板，包括：
发光层，所述发光层包括发光面；
力致发光层，所述力致发光层设置在所述发光层的所述发光面的一侧，所述力致发光层用于吸收所述柔性显示面板弯曲时产生的应力并将所述应力转换成光信号发出。
本申请实施例还提供一种柔性显示面板的制备方法，所述制备方法包括：
制作发光层，所述发光层包括发光面；
在所述发光层的所述发光面的一侧设置力致发光层，所述力致发光层用于吸收所述柔性显示面板弯曲时产生的应力并将所述应力转换成光信号发出。
有益效果
本申请实施例提供的柔性显示面板包括发光层和力致发光层，力致发光层设置在发光层具有发光面的一侧，而且力致发光层用于吸收柔性显示面板弯曲时产生的应力，并将应力转换成光信号发出，通过力致发光层将部分应力转换为光能，减小了弯曲部分应力积累，使得该阴极与OLED膜层界面结合力相对增强，进而避免了OLED器件的阴极与OLED膜层之间剥离，从而解决了柔性显示面板的应力集中区域容易发生失效的问题。
附图说明
图1为本申请实施例提供的柔性显示面板的第一结构示意图；
图2为本申请实施例提供的柔性显示面板中力致发光层的结构示意图；
图3为本申请实施例提供的柔性显示面板的第二结构示意图；
图4为本申请实施例提供的柔性显示面板的制备方法的第一流程示意图；
图5为图4所示的制备方法中的制备力致发光层的流程示意图；
图6为本申请实施例提供的柔性显示面板的制备方法的第二流程示意图。
本发明的实施方式
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，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的， 而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
柔性有机发光二极管器件进行弯曲或折叠时，上层封装膜层及模组结构承受弯折形成的应力将会有部分释放到OLED器件的阴极，上层封装膜层及模组结构承受弯折形成的应力将会有部分释放到OLED器件的阴极，由于OLED器件上层封装膜层及模组结构间粘结力往往高于OLED器件的阴极与OLED器件中OLED膜层的粘结力，使得该阴极与OLED膜层界面结合力相对较弱，使得OLED器件的阴极与OLED膜层之间容易发生剥离，从而导致柔性显示面板的应力集中区域容易失效。
因此，为了解决上述问题，本申请提出了一种柔性显示面板和柔性显示面板的制备方法。下面结合附图和实施方式对本申请作进一步说明。
请参阅图1，图1为本申请实施例提供的柔性显示面板的第一结构示意图。本申请实施例提供一种柔性显示面板100，该柔性显示面板100包括发光层20和力致发光层10，其中，发光层20包括发光面，力致发光层10设置在发光层20的发光面的一侧。力致发光层10用于吸收柔性显示面板100弯曲时产生的应力并将应力转换成光信号发出。本申请实施例通过力致发光层10设置在发光层20的发光面的一侧，以使得柔性显示面板100在卷曲或者折叠时产生的应力可以被力致发光层10吸收并转换成光能量发出，通过力致发光层10既可以缓冲折叠或弯曲过程中应力对发光层20的破坏，又可以通过力致发光层10发出对应的光以补偿发光层20的光。另外，在相同的发光强度要求时，具有力致发光层10的柔性显示面板100可以对发光层20发出的光强进行补偿，以此可以减小发光层20的发光强度，进而延长了发光层20中发光材料的寿命，提高了柔性显示面板100的稳定性。
发光层20包括间隔设置的红色发光单元210、绿色发光单元220和蓝色发光单元230。其中，红色发光单元210用于发出红光，绿色发光单元220用于发出绿光，蓝色发光单元230用于发出蓝光。这红色发光单元210、绿色发光单元220和蓝色发光单元230可以构成用于实现白光的最小组，在有机发光显示装置，中，这红色发光单元210、绿色发光单元220和蓝色发光单元230可以被重复地布置以显示图像。
请继续参阅图2，图2为本申请实施例提供的柔性显示面板中力致发光层的结构示意图。力致发光层10包括力致发光子层130，力致发光子层130具有力致发光(ML)效应，通过压电效应和光激发性之间的耦合作用，实现从机械应力到可见光发射的转换，即ML过程。其中，力致发光(Mechanoluminescence，ML)是指物体在受到外力时，将机械能量经过一系列的转换转化为光能的现象。对于弹性力致发光材料，其发光一般具有高重复性，且在一定范围内力致发光光谱强度与所受机械力呈良好的线性关系。
力致发光子层130包括与红色发光单元210相对设置的红色力致发光单元131、与绿色发光单元220相对设置的绿色力致发光单元132和与蓝色发光单元230相对设置的蓝色力致发光单元133。示例性的，红色力致发光单元131吸收应力后转换成红光发出，绿色力致发光单元132吸收应力后转换成绿光发出，蓝色力致发光单元133吸收应力后转换成蓝光发出。通过将力致发光子层130对应发光层20的颜色进行设置，可以补偿发光层20的发光强度，进而可以延长发光层20中发光材料的寿命。
力致发光单元中的红色发光单元210的发光面积、绿色发光单元220的发光面积和蓝色发光单元230的发光面积分别与红色力致发光单元131、绿色力致发光单元132和蓝色力致发光单元133的发光面积可以一致也可以不一致。示例性的，红色发光单元210的发光面积小于或等于红色力致发光单元131的发光面积，绿色发光单元220的发光面积小于或等于绿色力致发光单元132的发光面积，蓝色发光单元230的发光面积小于或等于蓝色力致发光单元133的发光面积。
在一些实施例中，红色发光单元210的发光面积和红色力致发光单元131的发光面积相同，绿色发光单元220的发光面积和绿色力致发光单元132的发光面积相同，蓝色发光单元230的发光面积和蓝色力致发光单元133的发光面积相同。通过将力致发光单元中的红色发光单元210的发光面积、绿色发光单元220的发光面积和蓝色发光单元230的发光面积分别与红色力致发光单元131、绿色力致发光单元132和蓝色力致发光单元133的发光面积一致，可以使得力致发光子层130吸收的应力更全面，进而可以更全面的保护发光层20，避免发光层20受到应力的影响。
在其他一些实施例中，红色发光单元210的发光面积也可以大于红色力致发光单元131的发光面积，绿色发光单元220的发光面积大于绿色力致发光单元132的发光面积，蓝色发光单元230的发光面积大于蓝色力致发光单元133的发光面积。又如，红色发光单元210的发光面积小于红色力致发光单元131的发光面积，绿色发光单元220的发光面积大于绿色力致发光单元132的发光面积，蓝色发光单元230的发光面积大于蓝色力致发光单元133的发光面积等等。可以理解的是，力致发光单元中的红色发光单元210的发光面积、绿色发光单元220的发光面积和蓝色发光单元230的发光面积分别与红色力致发光单元131、绿色力致发光单元132和蓝色力致发光单元133的发光面积的大小关系，可以根据实际情况进行设置，在此不作具体地限定，只需保证力致发光层10设置在发光层20的发光面的一侧即可。
力致发光子层130可包括ZnS:Mn 2+，ZnS:Cu 2+，四苯乙烯类等力致发光材料或体系中一种或组合，其发射波长匹配RGB发光要求。
力致发光层10还包括电子传输子层140、电荷产生子层110和第一空穴传输层120，其中，电子传输子层140设置在力致发光子层130远离发光层20的一侧，电子传输子层140用于向力致发光子层130提供电子。电荷产生子层110设置在力致发光子层130远离电子传输子层140的一侧，电荷产生层用于向电子传输子层140提供电子。第一空穴传输层120设置在电荷产生子层110和力致发光子层130之间，用于将电荷产生子层110的空穴传输给力致发光子层130。
需要说明的是，电荷产生子层110在不同的分布区域具有不同的n型或有机p型掺杂浓度。因为柔性显示面板100在卷曲或者折叠时产生的应力大小不一样，则使得力致发光子层130通过吸收应力产生的发光强度不一致，导致力致发光子层130的发光强度也呈一定的区域分布，进而使得柔性显示面板100发光不均匀。因此，本申请实施例通过将电荷产生子层110根据应力分布设置不同的掺杂浓度，使得在同等驱动电压下，不同掺杂浓度的电荷产生子层110产生不同的电子能量至力致发光子层130，以此补偿不同应力导致发光子层的发光强度不同的问题，进而使得柔性显示面板100发光均匀。
示例性的，电荷产生子层110包括与红色发光单元210相对设置的第一电荷产生层111、与绿色发光单元220相对设置的第二电荷产生层112和与蓝色发光单元230相对设置的第三电荷产生层113，当绿色发光单元220对应区域的应力大于红色发光单元210对应区域的应力和蓝色发光单元230对应区域的应力时，第一电荷产生层111的掺杂比和第三电荷产生层113的掺杂比均小于第二电荷产生层112的掺杂比。
又如，柔性显示面板100包括弯折区，弯折区的中心区域的应力大于弯折区侧边的应力，则位于弯折区侧边的电荷产生子层110的掺杂浓度最佳，电荷产生子层110的掺杂浓度沿弯折区侧边至中心区域的方向逐渐增大或逐渐减小。
其中，电荷产生子层110的掺杂浓度沿弯折区侧边至中心区域的方向逐渐增大或逐渐减小，可以理解为，因应力小的区域所对应的电荷产生子层110的掺杂浓度最佳，当应力大的区域所对应的电荷产生子层110的掺杂浓度逐渐增大或逐渐减小时，则电荷产生子层110产生电子的效率会逐渐减小，进而可以使得位于应力小的区域的电荷产生子层110产生电子的效率会高于位于应力大的区域所对应的电荷产生子层110。
可以理解的是，因弯折区的中心区域的应力大于弯折区侧边的应力，因此位于弯折区的中心区域的力致发光子层130发出的光能强度大于位于弯折区侧边的力致发光子层130发出的光能强度，导致显示面板发光不均匀。而通过将弯折区侧边的电荷产生子层110的掺杂浓度设置为最佳，可以使得电荷产生子层110产生更多的电荷传递给力致发光子层130和发光层20，使力致发光子层130和发光层20增大发光强度，进而可以使得在弯折区的中心区域的发光强度和在弯折区侧边的发光强度接近，从而解决了因为应力不同导致发光不匀均的问题。其中，电荷产生子层110的掺杂浓度最佳指得是使得红色力致发光单元131的最佳电流效率范围为40～60cd/A、绿色力致发光单元132的最佳电流效率范围为100～150cd/A和蓝色力致发光单元133的最佳电流效率范围为5～10cd/A。
可以理解的是，当柔性显示面板100为折叠屏时，力致发光层10设置在折叠面，且电荷产生子层110的掺杂浓度沿折叠面分布，即折叠面的应力越小，电荷产生子层110的掺杂浓度为最佳。
当柔性显示面板100为卷轴屏时，电荷产生子层110的掺杂浓度沿弯曲圆轴的径向分布，即卷轴面的应力越小，电荷产生子层110的掺杂浓度为最佳。
电荷产生子层110的掺杂浓度的范围为1％～30％。
需要说明的是，在发光层20的发光面的一侧设置有多个相互叠加设置的力致发光层10。通过多层叠加设置的力致发光层10可以更好的减小应力集中区域容易发生失效的问题。
请继续参阅图3，图3为本申请实施例提供的柔性显示面板的第二结构示意图。本申请实施例通过的柔性显示面板100还包括第一电极50、电子传输层30、第二空穴传输层40和第二电极60，其中，第一电极50设置在发光层20远离力致发光层10的一侧，第一电极50可以是向发光层20供应空穴的电极，并且可以被称为阳极。第二空穴传输层40设置在发光层20和第一电极50之间，用于将第一电极50的空穴向发光层20传输。第二电极60设置在力致发光层10远离第一电极50的一侧，第二电极60为阴极。
请继续参阅图4，图4为本申请实施例提供的柔性显示面板的制备方法的第一流程示意图。本申请实施例提供一种显示面板的制备方法，应用于柔性显示面板100，柔性显示面板100的制备方法的具体流程如下：
101、制作发光层，发光层包括发光面。
运用沉积法制作发光层20，其中，发光层20包括间隔设置的红色发光单元210、绿色发光单元220和蓝色发光单元230。发光层20的具体结构可见上述，在此不再赘述。
102、在发光层的发光面的一侧设置力致发光层，力致发光层用于吸收柔性显示面板弯曲时产生的应力，并将应力转换成光信号发出。
在发光层20的发光面的一侧设置力致发光层10，通过力致发光层10吸收柔性显示面板100弯曲时产生的应力并将应力转换成光信号发出，可以减小应力对柔性显示面板100的破坏。设置力致发光层10的具体见图5，图5为图4所示的制备方法中的制备力致发光层的流程示意图。具体流程如下：
1021、在发光层的发光面的一侧设置力致发光子层。
使用打印、蒸镀等方式发光层20的发光面的一侧制作力致发光子层130。示例性的，在红色发光单元210的发光面的一侧设置红色力致发光单元131，在绿色发光单元220的发光面的一侧设置绿色力致发光单元132，在蓝色发光单元230的发光面的一侧设置蓝色力致发光单元133。其中，力致发光子层130可使用ZnS:Mn 2+、ZnS:Cu 2+、四苯乙烯类等力致发光材料或体系中一种或组合，其发射波长匹配RGB发光要求。
1022、在力致发光子层远离发光层的一侧设置第一空穴传输层。
力致发光子层130远离发光层20的一侧沉积第一空穴传输层120，第一空穴传输层120用于将电荷产生子层110的空穴传输给力致发光子层130。
1023、在第一空穴传输层远离发光层的一侧设置电荷产生子层。
电荷产生子层110可通过溶液法制备。其中，电荷产生子层110在不同的分布区域具有不同的n型或有机p型掺杂浓度。显示面板的弯折区的中心区域的应力大于弯折区侧边的应力，电荷产生子层110的掺杂浓度沿弯折区侧边至中心区域的方向逐渐增大或逐渐减小，即分布区域的应力越小，电荷产生子层110的掺杂浓度为最佳。具体的分析见上述，在此不再赘述。1024、在电荷产生子层远离发光层的一侧设置电子传输子层。
在电荷产生子层110远离发光层20的一侧沉积电子传输子层140，用于向力致发光子层130提供电子。
请继续参阅图6，图6为本申请实施例提供的柔性显示面板的制备方法的第二流程示意图。本申请实施例提供一种柔性显示面板100的制备方法，具体流程见如下：
201、制作第一电极。
第一电极50可以是向发光层20供应空穴的电极，并且可以被称为阳极。
202、在第一电极的一侧制作第二空穴传输层。
在第一电极50上沉积第二空穴传输层40，第二空穴传输层40用于将第一电极50的空穴传出。
203、在第二空穴传输层远离第一电极的一侧制作发光层。
在第二空穴传输层40远离第一电极50的一侧分别沉积红色发光单元210、绿色发光单元220和蓝色发光单元230，具体见上述步骤201，在此不再赘述。
204、在发光层远离第一电极的一侧制作力致发光层。
在发光层20的红色发光单元210、绿色发光单元220和蓝色发光单元230上沉积电子传输层30。
在电子传输层30远离第一电极50的一侧制作力致发光层10，具体见上述步骤102，在此不再赘述。
205、在力致发光层远离第一电极的一侧制作第二电极。
在力致发光层10的电子传输子层140远离第一电极50的一侧制作第二电极60，其中，第二电极60为阴极。
本申请实施例通过在柔性显示面板100中增加力致发光层10，通过力致发光层10吸收柔性显示面板100弯曲时产生的应力，并将应力转换成光信号发出，减小了弯曲部分应力积累，且对发光层20发出的光强进行补偿，延长了发光层20中发光材料的寿命，提高了柔性显示面板100的稳定性。另外，为了避免因为应力分布不均导致力致发光层10发出的光不均匀，本申请实施例还提供了在柔性显示面板100中设置根据不同应力分布区域设计具有不同的n型或有机p型掺杂浓度的电荷产生子层110，以此对发光强度进行补偿，使得柔性显示面板100发出均匀的光线强度。
以上对本申请实施例提供的一种柔性显示面板和柔性显示面板的制备方法进行了详细介绍。本文中应用了具体条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。同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种柔性显示面板，其中，包括：
    发光层，所述发光层包括发光面；
    力致发光层，所述力致发光层设置在所述发光层的所述发光面的一侧，所述力致发光层用于吸收所述柔性显示面板弯曲时产生的应力并将所述应力转换成光信号发出。
  2. 根据权利要求1所述的柔性显示面板，其中，所述力致发光层包括：
    力致发光子层；
    电子传输子层，所述电子传输子层设置在所述力致发光子层远离所述发光层的一侧，所述电子传输子层用于向所述力致发光子层提供电子；
    电荷产生子层，所述电荷产生子层设置在所述力致发光子层远离所述电子传输子层的一侧，所述电荷产生子层用于向所述电子传输子层提供电子；
    第一空穴传输层，所述第一空穴传输层设置在所述电荷产生子层和所述力致发光子层之间，用于将所述电荷产生子层的空穴传输给所述力致发光子层。
  3. 根据权利要求2所述的柔性显示面板，其中，所述柔性显示面板包括弯折区，所述弯折区的中心区域的应力大于所述弯折区侧边的应力，所述电荷产生子层的掺杂浓度沿所述弯折区侧边至所述中心区域的方向逐渐增大或逐渐减小。
  4. 根据权利要求3所述的柔性显示面板，其中，所述电荷产生子层在不同的分布区域具有不同的n型或有机p型掺杂浓度。
  5. 根据权利要求4所述的柔性显示面板，其中，所述电荷产生子层的掺杂浓度的范围为1％～30％。
  6. 根据权利要求2所述的柔性显示面板，其中，
    所述发光层包括间隔设置的红色发光单元、绿色发光单元和蓝色发光单元；
    所述力致发光子层包括与所述红色发光单元相对设置的红色力致发光单元、与所述绿色发光单元相对设置的绿色力致发光单元和与所述蓝色发光单元相对设置的蓝色力致发光单元。
  7. 根据权利要求6所述的柔性显示面板，其中，
    所述红色发光单元的发光面积小于或等于所述红色力致发光单元的发光面积，所述绿色发光单元的发光面积小于或等于所述绿色力致发光单元的发光面积，所述蓝色发光单元的发光面积小于或等于所述蓝色力致发光单元的发光面积。
  8. 根据权利要求2所述的柔性显示面板，其中，所述力致发光子层可包括ZnS:Mn 2+、ZnS:Cu 2+、四苯乙烯中的一种或组合。
  9. 根据权利要求1所述的柔性显示面板，其中，在所述发光层的所述发光面的一侧设置有多个相互叠加设置的所述力致发光层。
  10. 根据权利要求1所述的柔性显示面板，其中，
    第一电极，所述第一电极设置在所述发光层远离所述力致发光层的一侧；
    第二空穴传输层，所述第二空穴传输层设置在所述发光层和所述第一电极之间，用于将所述第一电极的空穴向所述发光层传输；
    第二电极，所述第二电极设置在所述力致发光层远离所述第一电极的一侧。
  11. 一种柔性显示面板的制备方法，其中，所述制备方法包括：
    制作发光层，所述发光层包括发光面；
    在所述发光层的所述发光面的一侧设置力致发光层，所述力致发光层用于吸收所述柔性显示面板弯曲时产生的应力并将所述应力转换成光信号发出。
  12. 根据权利要求11所述的制备方法，其中，所述在所述发光层的所述发光面的一侧设置力致发光层，包括：
    在所述发光层的发光面的一侧设置力致发光子层；
    在所述力致发光子层远离所述发光层的一侧设置第一空穴传输层；
    在所述第一空穴传输层远离所述发光层的一侧设置电荷产生子层；
    在所述电荷产生子层远离所述发光层的一侧设置电子传输子层。
  13. 根据权利要求12所述的制备方法，其中，所述在所述发光层的发光面的一侧设置力致发光子层，包括：使用打印或蒸镀的方式在所述发光层的发光面的一侧制作力致发光子层。
  14. 根据权利要求12所述的制备方法，其中，所述发光层包括间隔设置的红色发光单元、绿色发光单元和蓝色发光单元；
    所述力致发光子层包括与所述红色发光单元相对设置的红色力致发光单元、与所述绿色发光单元相对设置的绿色力致发光单元和与所述蓝色发光单元相对设置的蓝色力致发光单元。
  15. 根据权利要求14所述的制备方法，其中，所述红色发光单元的发光面积小于或等于所述红色力致发光单元的发光面积，所述绿色发光单元的发光面积小于或等于所述绿色力致发光单元的发光面积，所述蓝色发光单元的发光面积小于或等于所述蓝色力致发光单元的发光面积。
  16. 根据权利要求12所述的制备方法，其中，所述力致发光子层包括ZnS:Mn 2+、ZnS:Cu 2+、四苯乙烯中的一种或组合。
  17. 根据权利要求12所述的制备方法，其中，所述柔性显示面板包括弯折区，所述弯折区的中心区域的应力大于所述弯折区侧边的应力，所述电荷产生子层的掺杂浓度沿所述弯折区侧边至所述中心区域的方向逐渐增大或逐渐减小。
  18. 根据权利要求17所述的制备方法，其中，所述电荷产生子层在不同的分布区域具有不同的n型或有机p型掺杂浓度。
  19. 根据权利要求18所述的制备方法，其中，所述电荷产生子层的掺杂浓度的范围为1％～30％。
  20. 根据权利要求11所述的制备方法，其中，所述制备方法还包括：
    在所述发光层的所述发光面的一侧设置多个相互叠加设置的所述力致发光层。
PCT/CN2021/138900 2021-12-08 2021-12-16 柔性显示面板和柔性显示面板的制备方法 WO2023103018A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/597,234 US20230180511A1 (en) 2021-12-08 2021-12-16 Flexible display panel and manufacturing method of flexible display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111491251.0 2021-12-08
CN202111491251.0A CN114171704A (zh) 2021-12-08 2021-12-08 柔性显示面板和柔性显示面板的制备方法

Publications (1)

Publication Number Publication Date
WO2023103018A1 true WO2023103018A1 (zh) 2023-06-15

Family

ID=80484311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/138900 WO2023103018A1 (zh) 2021-12-08 2021-12-16 柔性显示面板和柔性显示面板的制备方法

Country Status (2)

Country Link
CN (1) CN114171704A (zh)
WO (1) WO2023103018A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105609533A (zh) * 2016-01-05 2016-05-25 京东方科技集团股份有限公司 柔性显示面板及其制作方法和应力变色聚合物的制作方法
CN105807475A (zh) * 2016-05-03 2016-07-27 京东方科技集团股份有限公司 彩膜基板及其制备方法、显示面板及显示装置
CN109307566A (zh) * 2018-08-30 2019-02-05 中山大学 一种力致发光器件及其制备方法
CN109443630A (zh) * 2018-10-31 2019-03-08 福州大学 一种基于qled发光器件的压力传感器
CN111129087A (zh) * 2019-12-16 2020-05-08 武汉华星光电半导体显示技术有限公司 一种柔性显示面板及其缺陷的检查方法
CN112213815A (zh) * 2020-09-25 2021-01-12 华南理工大学 柔性力致发光光纤及其制备方法和大应变传感应用装置
WO2021117076A1 (ja) * 2019-12-09 2021-06-17 シャープ株式会社 発光装置、および、発光装置の製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000173301A (ja) * 1998-12-10 2000-06-23 Seiko Epson Corp 圧電発光素子、表示装置およびそれらの製造方法
KR101174884B1 (ko) * 2010-12-23 2012-08-17 삼성디스플레이 주식회사 플렉시블 유기 발광 표시 장치 및 그 제조방법
US20150242057A1 (en) * 2014-02-27 2015-08-27 Samsung Display Co., Ltd. Technique for generating localized light source for an embedded optical sensor array
KR101717471B1 (ko) * 2015-10-19 2017-03-17 한국생산기술연구원 유무기 복합 한지발광소자 및 이의 제조방법
CN206282888U (zh) * 2016-12-28 2017-06-27 上海天马有机发光显示技术有限公司 一种柔性显示面板和显示装置
CN106910838B (zh) * 2017-03-31 2018-10-09 华南理工大学 一种基于压电膜的钙钛矿发光器件及其制备方法
CN111430432A (zh) * 2020-04-14 2020-07-17 武汉华星光电半导体显示技术有限公司 柔性显示面板
CN111628087A (zh) * 2020-06-15 2020-09-04 西南石油大学 一种力致发光的柔性太阳能电池及其制备方法
CN111959078A (zh) * 2020-08-05 2020-11-20 西北工业大学 利用柔性有机摩擦发光材料的柔性应力响应型器件及制备方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105609533A (zh) * 2016-01-05 2016-05-25 京东方科技集团股份有限公司 柔性显示面板及其制作方法和应力变色聚合物的制作方法
CN105807475A (zh) * 2016-05-03 2016-07-27 京东方科技集团股份有限公司 彩膜基板及其制备方法、显示面板及显示装置
CN109307566A (zh) * 2018-08-30 2019-02-05 中山大学 一种力致发光器件及其制备方法
CN109443630A (zh) * 2018-10-31 2019-03-08 福州大学 一种基于qled发光器件的压力传感器
WO2021117076A1 (ja) * 2019-12-09 2021-06-17 シャープ株式会社 発光装置、および、発光装置の製造方法
CN111129087A (zh) * 2019-12-16 2020-05-08 武汉华星光电半导体显示技术有限公司 一种柔性显示面板及其缺陷的检查方法
CN112213815A (zh) * 2020-09-25 2021-01-12 华南理工大学 柔性力致发光光纤及其制备方法和大应变传感应用装置

Also Published As

Publication number Publication date
CN114171704A (zh) 2022-03-11

Similar Documents

Publication Publication Date Title
KR102277563B1 (ko) 백색 유기 발광 소자
US10741781B2 (en) White organic light emitting device
KR101352116B1 (ko) 백색 유기 발광 소자
KR101351410B1 (ko) 백색 유기 발광 소자
CN108878667B (zh) 发光器件及其制作方法、电子装置
WO2019095565A1 (zh) 串联量子点发光器件、面板即显示器
KR20120077301A (ko) 백색 유기 발광 소자
US10121983B2 (en) Light-emitting device including nano particle having core shell structure
CN110783473B (zh) 一种发光器件和显示面板
TW201824599A (zh) 有機發光裝置及使用該有機發光裝置的有機發光顯示裝置
WO2019064541A1 (ja) 発光装置および表示装置
CN110660924B (zh) 一种显示面板和显示装置
KR101715857B1 (ko) 백색 유기 발광 소자
WO2023103018A1 (zh) 柔性显示面板和柔性显示面板的制备方法
WO2021253490A1 (zh) 有机发光二极管显示器件及显示面板
US20190051852A1 (en) White organic light-emitting diode device
CN110729336A (zh) 一种显示面板及显示装置
US20230180511A1 (en) Flexible display panel and manufacturing method of flexible display panel
CN112289959B (zh) 一种有机电致发光器件及提高亮度均匀性的方法
CN210837761U (zh) 一种显示面板及显示装置
CN214477455U (zh) 显示结构
CN110635056B (zh) 一种oled器件、显示面板、显示装置以及照明装置
KR102238776B1 (ko) 복합형 led디스플레이
WO2024000662A1 (zh) 显示面板及显示装置
CN221151900U (zh) 一种oled显示结构及显示器