WO2021027247A1 - 显示面板 - Google Patents

显示面板 Download PDF

Info

Publication number
WO2021027247A1
WO2021027247A1 PCT/CN2020/070923 CN2020070923W WO2021027247A1 WO 2021027247 A1 WO2021027247 A1 WO 2021027247A1 CN 2020070923 W CN2020070923 W CN 2020070923W WO 2021027247 A1 WO2021027247 A1 WO 2021027247A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
display panel
electrode layer
opening
area
Prior art date
Application number
PCT/CN2020/070923
Other languages
English (en)
French (fr)
Inventor
明星
张伟琦
Original Assignee
武汉华星光电半导体显示技术有限公司
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 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/641,345 priority Critical patent/US20220005908A1/en
Publication of WO2021027247A1 publication Critical patent/WO2021027247A1/zh

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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

  • This application relates to the field of display technology, and in particular to a display panel.
  • OLED Light-Emitting Diode
  • the part of the frame that is folded to the back will connect the control chip with the components on the front of the display panel through the internal metal wiring.
  • the metal trace will bend around the bending center of the bottom layer of the frame part.
  • due to the large film thickness between the metal trace and the bottom layer of the frame part When the metal trace is bent around the bending center, a large amount of deformation is generated, which increases the risk of the metal trace breaking.
  • the metal traces in the bending area produce a large amount of deformation, which easily causes the metal traces to break and the display panel loses the display function.
  • the present application provides a display panel including a display area, a back area, and a bending area connecting the front area and the back area;
  • the bending area is a bending structure, and the back area is disposed on the back side of the front area through the bending area;
  • the display panel includes:
  • a barrier layer disposed on the base layer
  • a first electrode layer disposed on the barrier layer
  • a first organic layer disposed on the first electrode layer
  • a second electrode layer disposed on the first organic layer
  • the barrier layer has a first opening
  • the first electrode layer has a second opening
  • the first organic layer has a third opening
  • the first organic layer covers the The end surface of the first opening and the end surface of the second opening, and the end surface of the third opening have a slope structure.
  • the end surface of the third opening relatively extends to the base layer.
  • the width of the second opening is greater than the width of the first opening.
  • the angle between the end surface of the third opening and the base layer is less than 40 degrees.
  • part of the second electrode layer is disposed on the base layer.
  • the second electrode layer is disposed along the end surface of the third opening and the side of the base layer facing the barrier layer.
  • At least part of the second electrode layer has an arc structure.
  • the display panel further includes a second organic layer disposed on the second electrode layer.
  • At least a part of the second organic layer has an arc structure.
  • the display panel further includes a pixel definition layer disposed on the second organic layer.
  • At least part of the pixel definition layer has an arc structure.
  • the pixel definition layer includes three-color sub-pixel units of red, green, and blue.
  • the substrate layer is a flexible substrate.
  • the base layer is made of polyimide.
  • the first organic layer is provided with a through hole, the through hole is filled with a conductive material, and the first electrode layer and the second electrode layer pass through the conductive material in the through hole.
  • the material is electrically connected.
  • both the first electrode layer and the second electrode layer include multiple wires and multiple electrodes, and the wires and/or electrodes in the first electrode layer are at least partially connected to the The wires and/or electrodes in the second electrode layer are electrically connected through the conductive materials in the through holes.
  • the barrier layer is composed of an inorganic layer and a third organic layer, the inorganic layer is disposed on the base layer, and the third organic layer is disposed on the inorganic layer.
  • the display panel provided by the present application includes a front area and a back area.
  • the back area is arranged on the back side of the front area through a bending area with a bending structure.
  • a barrier layer, The first electrode layer and the first organic layer are respectively provided with openings, and the second electrode layer is extended to the base layer along the slope at the opening of the first organic layer, so that the second electrode layer produces less bending deformation, Therefore, the bending stress of the second electrode layer in the bending area is reduced, the risk of the second electrode layer fracture is reduced, and the quality of the display panel and the yield in the manufacturing process are improved.
  • FIG. 1 is a schematic structural diagram of a display panel (before the bending area is bent) provided by an embodiment of the present application;
  • FIG. 2 is a cross-sectional view of the display panel shown in FIG. 1 (before the bending area is bent) along A-A';
  • Fig. 3 is a cross-sectional view of the display panel shown in Fig. 1 (after the bending area is bent) along A-A'.
  • the embodiment of the present application provides a display panel including a front area and a back area.
  • the back area is arranged on the back side of the front area through a bending area with a bending structure.
  • the barrier layer, the first electrode layer, and the first organic layer are respectively provided with openings, and the second electrode layer is extended to the base layer along the slope at the opening of the first organic layer, so that the second electrode layer has a small effect.
  • the bending deformation of the second electrode layer reduces the bending stress of the second electrode layer in the bending area, and reduces the risk of the second electrode layer breaking.
  • FIG. 1 it is a schematic structural diagram of a display panel 10 provided by an embodiment of the present application.
  • the display panel 10 can be divided into a front area 10A, a back area 10B, and a bending area 10C.
  • the bending area 10C has a bending structure, and the back area 10B is disposed on the back side of the front area 10A through the bending area 10C.
  • the display panel 10 shown in FIG. 1 is a schematic structural diagram before the back area 10B is bent to the back side of the front area 10A. It should be understood that, in the display panel 10 provided by the embodiment of the present application, in all the manufacturing processes before the bending process, the front area 10A, the bending area 10C, and the back area 10B are on the same side of the display panel 10. That is, the bending area 10C at this time does not have a bending structure, and the back area 10B is not yet disposed on the back side of the front area 10A.
  • the display panel 10 provided by the embodiment of the present application will be described with reference to the structural diagram of the display panel before the bending process and after the bending process.
  • Figure 2 is a cross-sectional view of the display panel shown in Figure 1 along the AA' direction before the bending process
  • Figure 3 is the display panel shown in Figure 1 being bent A cross-sectional view along the AA' direction after the folding process.
  • the display panel 10 includes a base layer 11, a barrier layer 12, a first electrode layer 13, a first organic layer 14 and a second electrode layer 15.
  • the thickness direction Z is perpendicular to the width direction X (refer to FIG. 1);
  • the barrier layer 12 is disposed on the base layer 11;
  • the first electrode layer 13 is disposed on the barrier layer 12 On the side of the barrier layer 12 facing away from the base layer 11;
  • the first organic layer 14 is disposed on the first electrode layer 13 and located on the first electrode layer 13 away from the barrier layer 12;
  • the second electrode layer 15 is disposed on the first organic layer 14, and is located on the side of the first organic layer 14 away from the first electrode layer 13.
  • the barrier layer 12 is broken to form a first opening 12a, and the first electrode layer 13 is broken to form a second opening 13a.
  • the barrier layer 12 forms a stepped structure at the first opening 12a.
  • the width of the second opening 13a is greater than the width of the first opening 12a, so that the first electrode layer 13 does not cover the end surface of the first opening 12a, thereby avoiding the following risks:
  • the first organic layer 14 is broken to form a third opening 14a, and the end surface of the third opening 14a has a slope structure, that is, the first organic layer 14 is in the third opening.
  • a slope surface is formed at the end surface of 14a, and the slope surfaces at both ends of the third opening 14a extend to the base layer 11 relatively.
  • the first organic layer 14 covers the end surface of the first opening 12a and the end surface of the second opening 13a.
  • the second electrode layer 15 is arranged along the end surface of the third opening 14a, so as to prevent the second electrode layer 15 from being excessively concentrated due to stress concentration at the third opening 14a. Risk of breakage.
  • the angle ⁇ between the end surface of the third opening 14a and the base layer 11 is less than 40 degrees. It should be understood that the smaller the angle between the end surface of the third opening 14a and the base layer 11, the smaller the stress concentration generated by the second electrode layer 15 on the end surface of the third opening 14a , The risk of fracture due to stress concentration is also smaller.
  • the two ends of the third opening 14a extend to the base layer 11, and the two ends of the third opening 14a are not on the base layer 11.
  • a part of the second electrode layer 15 is directly disposed on the base layer 11.
  • the base layer 11 is a flexible base, and its material can be a flexible transparent material, such as polyimide, to ensure that the display panel 10 has bendability.
  • the barrier layer 12 is composed of an inorganic layer 121 and a third organic layer 122.
  • the inorganic layer 121 is used to prevent external air and moisture from entering the display panel 10; the organic layer 122 can prevent external air and moisture from entering the display panel 10 on the one hand, and on the other hand can prevent the The first electrode layer 13 generates a risk of leakage.
  • the bending area 10C is bent, so that the back area 10B is turned over to the back side of the front area 10A.
  • the base layer 11 and the second electrode layer 15 are bent around the bending center L, and at least a part of the second electrode layer 11 forms an arc structure due to the bending.
  • the barrier layer 12, the first electrode layer 13 and the first organic layer 14 are respectively provided with openings in the bending area 10C, at least the following two beneficial effects are produced: one is to avoid the barrier The layer 12, the first electrode layer 13, and the first organic layer 14 are broken due to bending; the second is to reduce the distance from the second electrode layer 15 to the bending center L, so that the second electrode The layer 15 produces a small amount of bending deformation, which reduces the risk of the second electrode layer 15 breaking due to bending.
  • the display panel 10 further includes a second organic layer 16 and a pixel definition layer 17.
  • the second organic layer 16 is disposed on the second electrode layer 15 and is located on the side of the second electrode layer 15 away from the first organic layer 14; the pixel definition layer 17 is disposed on the second On the organic layer 16 and on the side of the second organic layer 16 away from the second electrode layer 15.
  • the second organic layer 16 functions as an insulation.
  • the pixel definition layer 17 includes at least three sub-pixel units of red, green and blue.
  • the second organic layer 16 is arranged along the second electrode layer 15 to form a concave surface, and the pixel definition layer 17 is formed along the The second organic layer 16 is arranged to form a concave surface; after the bending process is performed on the bending area 10C, at least a part of the second organic layer 16 and the pixel definition layer 17 are bent to form an arc structure.
  • the barrier layer 12, the first electrode layer 13 and the first organic layer 14 are respectively provided with openings, thereby reducing the size of the second organic layer 16 and the The distance between the pixel defining layer 17 and the bending center L further reduces the amount of bending deformation of the second organic layer 16 and the pixel defining layer 17 and reduces the risk of deformation and fracture.
  • the first organic layer 14 is provided with a through hole 141, the through hole 141 is filled with a conductive material, and the first electrode layer 13 and the second electrode layer 15 pass through the through hole
  • the conductive material in 141 is electrically connected.
  • the through holes 141 are respectively provided in the front area 10A and the back area 10B, so that the first electrode layer 13 at both ends of the second opening 13a is connected to the second electrode layer respectively. 15Connect.
  • the number of the through holes 141 provided in the front area 10A and the back area 10B may be multiple.
  • the first electrode layer 13 and the second electrode layer 15 may include multiple traces and multiple electrodes, and the traces and/or electrodes in the first electrode layer 13 are at least partially connected to the second electrode layer.
  • the wires and/or electrodes in 15 are connected through the through holes 141.
  • the back area 10B is provided with a flexible circuit board
  • the flexible circuit board is provided with an integrated chip
  • the first electrode layer 13 and the second electrode layer 15 are respectively connected to the flexible circuit board
  • the integrated chip controls the display function of the display panel 10 through the first electrode layer 13 and the second electrode layer 15.
  • At least the front area 10A is a display area and has a picture display function; according to design requirements, the bending area 10C and the back area 10B may also have a picture display function.
  • the display panel 10 provided by the embodiment of the present application includes a front area 10A and a back area 10B.
  • the back area 10B is provided on the back side of the front area 10A through a bending area 10C having a bending structure.
  • the barrier layer 12, the first electrode layer 13 and the first organic layer 14 are respectively provided with openings, and the second electrode layer 15 is extended along the slope at the opening of the first organic layer 14
  • the second electrode layer 15 is slightly bent and deformed, thereby reducing the bending stress of the second electrode layer 15 in the bending area, and reducing the second electrode layer 15
  • the risk of breakage improves the quality of the display panel 10 and the yield rate in the manufacturing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示面板（10），分为正面区（10A）和背面区（10B），背面区（10B）通过具有弯折结构的弯折区（10C）设置于正面区（10A）的背侧；显示面板（10）包括基底层（11）、阻隔层（12）、第一电极层（13）、第一有机层（14）以及第二电极层（15）；在弯折区（10C）内，通过将阻隔层（12）、第一电极层（13）和第一有机层（14）分别设置开口，并将第二电极层（15）沿第一有机层（14）开口处的斜面延伸至基底层（11）上，使第二电极层（15）产生较小的弯曲变形，从而减小第二电极层（15）在弯折区（10C）内的弯曲应力，降低第二电极层（15）断裂的风险，提升显示面板（10）的质量和制程中的良率。

Description

显示面板
本申请要求于2019年08月09日提交中国专利局、申请号为201910734220.X、发明名称为“显示面板”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种显示面板。
 背景技术
相比于液晶显示器（Liquid Crystal Display, LCD），有机发光二极管显示器（Organic Light-Emitting Diode, OLED）的最大优势在于可以在柔性衬底上制作。由于OLED有机发光材料具有耐弯折性，使得OLED显示面板可以实现弯曲化和折叠化。如果将OLED显示面板的下边框（border）部分翻折到显示器背面，就可以将OLED显示面板的下边框尺寸进一步缩小，达到极窄边框或者无边框的效果。
在OLED显示面板的窄边框设计中，被翻折至背面的边框部分会通过其内部的金属走线使控制芯片与显示面板正面的元件连接。在边框部分翻折过程中，金属走线会绕着边框部分底层的弯折中心弯曲，而在现有技术中，由于金属走线与边框部分的底层之间具有较大的膜层厚度，使得金属走线绕弯折中心弯曲时会产生较大的变形量，从而增加了金属走线断裂的风险。
 技术问题
显示面板的翻折制程中，弯折区域的金属走线产生较大的变形量，容易导致金属走线的断裂，使显示面板丧失显示功能。
 技术解决方案
为了解决上述技术问题，本申请的解决方案如下：
本申请提供一种显示面板，所述显示面板包括显示区、背面区以及连接所述正面区和所述背面区的弯折区；
所述弯折区为弯折结构，所述背面区通过所述弯折区设置于所述正面区的背侧；
所述显示面板包括：
基底层；
设置于所述基底层上的阻隔层；
设置于所述阻隔层上的第一电极层；
设置于所述第一电极层上的第一有机层；以及
设置于所述第一有机层上的第二电极层；
其中，在所述弯折区内，所述阻隔层具有第一开口，所述第一电极层具有第二开口，所述第一有机层具有第三开口，所述第一有机层覆盖所述第一开口的端面和所述第二开口的端面，所述第三开口的端面为斜面结构。
在本申请的显示面板中，在所述弯折区内，所述第三开口的端面相对延伸至所述基底层上。
在本申请的显示面板中，所述第二开口的宽度大于所述第一开口的宽度。
在本申请的显示面板中，在所述弯折区内，所述第三开口的端面与所述基底层的夹角的度数为低于40度。
在本申请的显示面板中，在所述弯折区内，所述第三开口的两端无接触。
在本申请的显示面板中，在所述弯折区内，部分所述第二电极层设置于所述基底层上。
在本申请的显示面板中，在所述弯折区内，所述第二电极层沿所述第三开口的端面及所述基底层朝向所述阻隔层的一面设置。
在本申请的显示面板中，在所述弯折区内，至少部分所述第二电极层具有弧形结构。
在本申请的显示面板中，所述显示面板还包括设置于所述第二电极层上的第二有机层。
在本申请的显示面板中，在所述弯折区内，所至少部分所述第二有机层具有弧形结构。
在本申请的显示面板中，所述显示面板还包括设置于所述第二有机层上的像素定义层。
在本申请的显示面板中，在所述弯折区内，至少部分所述像素定义层具有弧形结构。
在本申请的显示面板中，所述像素定义层包括红、绿、蓝三色子像素单元。
在本申请的显示面板中，所述基底层为柔性基底。
在本申请的显示面板中，所述基底层由聚酰亚胺制成。
在本申请的显示面板中，所述第一有机层上设置有通孔，所述通孔内填充导电材料，所述第一电极层与所述第二电极层通过所述通孔内的导电材料电性连接。
在本申请的显示面板中，所述第一电极层和所述第二电极层均包括多条走线和多个电极，所述第一电极层内的走线和/或电极至少部分与所述第二电极层内的走线和/或电极通过所述通孔内的导电材料电性连接。
在本申请的显示面板中，所述阻隔层由无机层和第三有机层组成，所述无机层设置于所述基底层上，所述第三有机层设置于所述无机层上。
 有益效果
本申请提供的显示面板，包括正面区和背面区，所述背面区通过具有弯折结构的弯折区设置于所述正面区的背侧，在所述弯折区内，通过将阻隔层、第一电极层和第一有机层分别设置开口，并将第二电极层沿所述第一有机层开口处的斜面延伸至基底层上，使所述第二电极层产生较小的弯曲变形，从而减小所述第二电极层在所述弯折区内的弯曲应力，降低所述第二电极层断裂的风险，提升显示面板的质量和制程中的良率。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一实施例提供的显示面板（弯折区弯折之前）的结构示意图；
图2是图1所示的显示面板（弯折区弯折之前）沿A-A’的截面图；
图3是图1所示的显示面板（弯折区弯折之后）沿A-A’的截面图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请实施例提供了一种显示面板，包括正面区和背面区，所述背面区通过具有弯折结构的弯折区设置于所述正面区的背侧，在所述弯折区内，通过将阻隔层、第一电极层和第一有机层分别设置开口，并将第二电极层沿所述第一有机层开口处的斜面延伸至基底层上，使所述第二电极层产生较小的弯曲变形，从而减小所述第二电极层在所述弯折区内的弯曲应力，降低所述第二电极层断裂的风险。
如图1所示，是本申请实施例提供的显示面板10的结构示意图。沿所述显示面板10的宽度方向X可以将所述显示面板10分为正面区10A、背面区10B及弯折区10C。其中所述弯折区10C具有弯折结构，所述背面区10B通过所述弯折区10C设置于所述正面区10A的背侧。
需要说明的是，为了清楚示意本申请实施例提供的显示面板的结构，图1中所示的显示面板10是将所述背面区10B弯折至所述正面区10A背侧之前的结构示意图。应当理解的是，本申请实施例提供的显示面板10，在其进行弯折制程之前的所有制程中，所述正面区10A、弯折区10C及背面区10B处于所述显示面板10的同一侧，即，此时的所述弯折区10C还不具有弯折结构，所述背面区10B还没有设置于所述正面区10A的背侧。下面结合弯折制程之前和弯折制程之后的显示面板结构示意图对本申请实施例提供的显示面板10进行说明。
如图2和图3所示，其中，图2是图1所示的显示面板在进行弯折制程之前沿A-A’方向的截面图，图3是图1所示的显示面板在进行弯折制程之后沿A-A’方向的截面图。
沿所述显示面板10的厚度方向Z，所述显示面板10包括基底层11、阻隔层12、第一电极层13、第一有机层14及第二电极层15。其中，所述厚度方向Z与所述宽度方向X（参考图1所示）垂直；所述阻隔层12设置于所述基底层11上；所述第一电极层13设置于所述阻隔层12上，且位于所述阻隔层12背离所述基底层11的一面；所述第一有机层14设置于所述第一电极层13上，且位于所述第一电极层13背离所述阻隔层12的一面；所述第二电极层15设置于所述第一有机层14上，且位于所述第一有机层14背离所述第一电极层13的一面。
在所述弯折区10C内，所述阻隔层12断开形成第一开口12a，所述第一电极层13断开形成第二开口13a。所述阻隔层12在所述第一开口12a处形成台阶结构。所述第二开口13a的宽度大于所述第一开口12a的宽度，以使所述第一电极层13不覆盖所述第一开口12a的端面，从而避免如下风险的发生：当所述第一电极层13覆盖所述第一开口12a的端面时，由于所述第一开口12a具有较陡的开口端面，导致位于所述第一开口12a处的所述第一电极层13产生应力集中，进而引发裂纹。
在所述弯折区10C内，所述第一有机层14断开形成第三开口14a，所述第三开口14a的端面具有斜面结构，即所述第一有机层14在所述第三开口14a的端面处形成斜坡面，并且所述第三开口14a两端的所述斜坡面相对延伸至所述基底层11上。所述第一有机层14覆盖所述第一开口12a的端面和所述第二开口13a的端面。
在所述弯折区10C内，所述第二电极层15沿所述第三开口14a的端面设置，从而避免所述第二电极层15在所述第三开口14a处因应力集中过大而断裂的风险。
可选地，在所述弯折区10C内，所述第三开口14a的端面与所述基底层11的夹角α的度数为低于40度。应当理解的是，所述第三开口14a的端面与所述基底层11之间的夹角越小，位于所述第三开口14a端面上的所述第二电极层15产生的应力集中越小，因应力集中而导致断裂的风险也越小。
可选地，在所述弯折区10C内，所述第三开口14a的两端相对延伸至所述基底层11上，且所述第三开口14a的两端在所述基底层11上不相互接触，从而使一部分所述第二电极层15直接设置于所述基底层11上。应当理解的是，在所述弯折区10C内，所述第二电极层15与所述基底层11之间的距离越小，将所述弯折区10C进行弯折时，所述第二电极层15产生的弯曲变形量越小，因弯曲变形而导致所述第二电极层15断裂的风险也越小。
可选地，所述基底层11为柔性基底，其材质可以是柔性透明材料，如聚酰亚胺等，以保证所述显示面板10具有可弯折性。
可选地，所述阻隔层12由无机层121和第三有机层122组成。所述无机层121用于防止外界的空气和水分进入所述显示面板10内部；所述有机层122一方面可以防止外界的空气和水分进入所述显示面板10内部，另一方面可以防止所述第一电极层13产生漏电风险。
需要说明的是，对所述显示面板10进行弯折制程后，所述弯折区10C弯曲，使所述背面区10B翻转至所述正面区10A的背侧。此时，在所述弯折区10C内，所述基底层11及所述第二电极层15绕弯折中心L弯曲，所述第二电极层11至少一部分因为弯曲形成弧形结构。由于所述阻隔层12、所述第一电极层13及所述第一有机层14在所述弯折区10C内分别设置开口，所以至少产生以下两点有益效果：一是避免了所述阻隔层12、所述第一电极层13及所述第一有机层14因弯曲发生断裂；二是缩小了所述第二电极层15至所述弯折中心L的距离，使所述第二电极层15产生较小的弯曲变形量，减小了所述第二电极层15因弯曲而断裂的风险。
根据本申请一实施例，所述显示面板10还包括第二有机层16和像素定义层17。所述第二有机层16设置于所述第二电极层15上，且位于所述第二电极层15背离所述第一有机层14的一面；所述像素定义层17设置于所述第二有机层16上，且位于所述第二有机层16背离所述第二电极层15的一面。所述第二有机层16起绝缘作用。所述像素定义层17至少包括红、绿、蓝三色子像素单元。
在所述弯折区10C内，对所述弯折区10C进行弯折制程之前，所述第二有机层16沿所述第二电极层15设置形成凹面，所述像素定义层17沿所述第二有机层16设置形成凹面；对所述弯折区10C进行弯曲制程之后，所述第二有机层16及所述像素定义层17至少一部分因为弯曲而形成弧形结构。应当理解的是，在所述弯折区10C内，所述阻隔层12、所述第一电极层13及所述第一有机层14分别设置开口，从而缩小所述第二有机层16及所述像素定义层17与所述弯折中心L之间的距离，进而减小所述第二有机层16及所述像素定义层17弯曲变形量，降低变形断裂风险。
根据本申请一实施例，所述第一有机层14上设置通孔141，所述通孔141内填充导电材料，所述第一电极层13与所述第二电极层15通过所述通孔141中的导电材料电性连接。需要说明的是，所述正面区10A和所述背面区10B内分别设置所述通孔141，从而使所述第二开口13a两端的所述第一电极层13分别与所述第二电极层15连接。所述正面区10A内和所述背面区10B内设置所述通孔141的数量可以是多个。所述第一电极层13及所述第二电极层15可以包括多条走线和多个电极，所述第一电极层13内的走线和/或电极至少部分与所述第二电极层15内的走线和/或电极通过所述通孔141连接。
可选地，所述背面区10B设置有柔性电路板，所述柔性电路板上设置有集成芯片，所述第一电极层13和所述第二电极层15分别连接至所述柔性电路板，所述集成芯片通过所述第一电极层13和所述第二电极层15控制所述显示面板10的显示功能。
可选地，至少所述正面区10A为显示区，具有显示画面功能；根据设计需求，所述弯折区10C和所述背面区10B也可以具有显示画面功能。
综上所述，本申请实施例提供的显示面板10，包括正面区10A和背面区10B，所述背面区10B通过具有弯折结构的弯折区10C设置于所述正面区10A的背侧，在所述弯折区10C内，通过将阻隔层12、第一电极层13和第一有机层14分别设置开口，并将第二电极层15沿所述第一有机层14开口处的斜面延伸至基底层11上，使所述第二电极层15产生较小的弯曲变形，从而减小所述第二电极层15在所述弯折区内的弯曲应力，降低所述第二电极层15断裂的风险，提升所述显示面板10的质量和制程中的良率。
需要说明的是，虽然本申请以具体实施例揭露如上，但上述实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定发范围为准。

Claims (18)

  1. 一种显示面板，其包括显示区、背面区以及连接所述正面区和所述背面区的弯折区；
    所述弯折区为弯折结构，所述背面区通过所述弯折区设置于所述正面区的背侧；
    所述显示面板包括：
    基底层；
    设置于所述基底层上的阻隔层；
    设置于所述阻隔层上的第一电极层；
    设置于所述第一电极层上的第一有机层；以及
    设置于所述第一有机层上的第二电极层；
    其中，在所述弯折区内，所述阻隔层具有第一开口，所述第一电极层具有第二开口，所述第一有机层具有第三开口，所述第一有机层覆盖所述第一开口的端面和所述第二开口的端面，所述第三开口的端面为斜面结构。
  2. 根据权利要求1所述的显示面板，其中，在所述弯折区内，所述第三开口的端面相对延伸至所述基底层上。
  3. 根据权利要求1所述的显示面板，其中，所述第二开口的宽度大于所述第一开口的宽度。
  4. 根据权利要求1所述的显示面板，其中，在所述弯折区内，所述第三开口的端面与所述基底层的夹角的度数为低于40度。
  5. 根据权利要求1所述的显示面板，其中，在所述弯折区内，所述第三开口的两端无接触。
  6. 根据权利要求5所述的显示面板，其中，在所述弯折区内，部分所述第二电极层设置于所述基底层上。
  7. 根据权利要求5所述的显示面板，其中，在所述弯折区内，所述第二电极层沿所述第三开口的端面及所述基底层朝向所述阻隔层的一面设置。
  8. 根据权利要求1所述的显示面板，其中，在所述弯折区内，至少部分所述第二电极层具有弧形结构。
  9. 根据权利要求1所述的显示面板，其中，所述显示面板还包括设置于所述第二电极层上的第二有机层。
  10. 根据权利要求9所述的显示面板，其中，在所述弯折区内，所至少部分所述第二有机层具有弧形结构。
  11. 根据权利要求9所述的显示面板，其中，所述显示面板还包括设置于所述第二有机层上的像素定义层。
  12. 根据权利要求11所述的显示面板，其中，在所述弯折区内，至少部分所述像素定义层具有弧形结构。
  13. 根据权利要求11所述的显示面板，其中，所述像素定义层包括红、绿、蓝三色子像素单元。
  14. 根据权利要求1所述的显示面板，其中，所述基底层为柔性基底。
  15. 根据权利要求14所述的显示面板，其中，所述基底层由聚酰亚胺制成。
  16. 根据权利要求1所述的显示面板，其中，所述第一有机层上设置有通孔，所述通孔内填充导电材料，所述第一电极层与所述第二电极层通过所述通孔内的导电材料电性连接。
  17. 根据权利要求16所述的显示面板，其中，所述第一电极层和所述第二电极层均包括多条走线和多个电极，所述第一电极层内的走线和/或电极至少部分与所述第二电极层内的走线和/或电极通过所述通孔内的导电材料电性连接。
  18. 根据权利要求1所述的显示面板，其中，所述阻隔层由无机层和第三有机层组成，所述无机层设置于所述基底层上，所述第三有机层设置于所述无机层上
PCT/CN2020/070923 2019-08-09 2020-01-08 显示面板 WO2021027247A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/641,345 US20220005908A1 (en) 2019-08-09 2020-01-08 Display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910734220.X 2019-08-09
CN201910734220.XA CN110570757A (zh) 2019-08-09 2019-08-09 显示面板

Publications (1)

Publication Number Publication Date
WO2021027247A1 true WO2021027247A1 (zh) 2021-02-18

Family

ID=68774937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/070923 WO2021027247A1 (zh) 2019-08-09 2020-01-08 显示面板

Country Status (3)

Country Link
US (1) US20220005908A1 (zh)
CN (1) CN110570757A (zh)
WO (1) WO2021027247A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110570757A (zh) * 2019-08-09 2019-12-13 武汉华星光电半导体显示技术有限公司 显示面板
CN111179756B (zh) * 2020-01-03 2022-07-26 京东方科技集团股份有限公司 复合型泡棉、柔性oled显示面板及显示装置
CN114361204A (zh) * 2020-09-27 2022-04-15 京东方科技集团股份有限公司 柔性显示面板及其制备方法、显示装置和拼接显示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269417A (zh) * 2014-07-04 2015-01-07 友达光电股份有限公司 像素阵列基板与面板
CN108122497A (zh) * 2018-02-02 2018-06-05 京东方科技集团股份有限公司 一种柔性阵列基板、柔性显示装置及组装方法
CN109686867A (zh) * 2019-01-30 2019-04-26 武汉天马微电子有限公司 显示面板和显示装置
KR20190072237A (ko) * 2017-12-15 2019-06-25 엘지디스플레이 주식회사 폴더블 표시장치
CN110570757A (zh) * 2019-08-09 2019-12-13 武汉华星光电半导体显示技术有限公司 显示面板

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI581431B (zh) * 2012-01-26 2017-05-01 半導體能源研究所股份有限公司 半導體裝置及半導體裝置的製造方法
CN106033800A (zh) * 2015-03-16 2016-10-19 上海和辉光电有限公司 有机发光结构以及具有该结构的有机发光器件和面板
JP6271828B1 (ja) * 2016-04-26 2018-01-31 東レ・ダウコーニング株式会社 フレキシブル積層体及びそれを備えたフレキシブルディスプレイ
CN109755256B (zh) * 2017-11-01 2022-01-11 京东方科技集团股份有限公司 柔性显示面板及制备方法、柔性显示装置
CN109037239B (zh) * 2018-07-26 2020-11-17 上海天马微电子有限公司 一种阵列基板及其制备方法、显示面板
CN109411513B (zh) * 2018-09-28 2021-01-26 广州国显科技有限公司 柔性显示面板和柔性显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104269417A (zh) * 2014-07-04 2015-01-07 友达光电股份有限公司 像素阵列基板与面板
KR20190072237A (ko) * 2017-12-15 2019-06-25 엘지디스플레이 주식회사 폴더블 표시장치
CN108122497A (zh) * 2018-02-02 2018-06-05 京东方科技集团股份有限公司 一种柔性阵列基板、柔性显示装置及组装方法
CN109686867A (zh) * 2019-01-30 2019-04-26 武汉天马微电子有限公司 显示面板和显示装置
CN110570757A (zh) * 2019-08-09 2019-12-13 武汉华星光电半导体显示技术有限公司 显示面板

Also Published As

Publication number Publication date
US20220005908A1 (en) 2022-01-06
CN110570757A (zh) 2019-12-13

Similar Documents

Publication Publication Date Title
WO2021027247A1 (zh) 显示面板
KR20220052884A (ko) 디스플레이 장치
WO2019041951A1 (zh) 柔性显示面板和柔性显示装置
WO2020118823A1 (zh) 显示面板及具有该显示面板的显示装置
WO2020155517A1 (zh) 柔性阵列基板、显示面板及制备方法
WO2020019421A1 (zh) Led背光装置及led显示装置
WO2020113838A1 (zh) 显示面板
WO2021168964A1 (zh) 一种像素结构及其制备方法、显示面板
WO2021056670A1 (zh) Oled折叠显示屏及其制作方法
WO2020237919A1 (zh) 有机发光二极管显示装置及其制作方法
WO2022052218A1 (zh) 一种阵列基板及其制备方法以及显示面板
US11327618B2 (en) Touch substrate and display panel
WO2020087803A1 (zh) 显示装置
WO2020073415A1 (zh) 显示面板的制程和显示面板
WO2020124903A1 (zh) 阵列基板及显示面板
WO2021258531A2 (zh) 显示面板及显示装置
WO2020019388A1 (zh) 显示模组及电子装置
WO2020172968A1 (zh) 阵列基板及具有该阵列基板的显示装置
WO2020019468A1 (zh) Tft阵列基板及其制造方法与柔性液晶显示面板
WO2020113701A1 (zh) 一种 oled 显示面板
WO2020118836A1 (zh) 触摸屏及显示装置
WO2022151528A1 (zh) 可拉伸显示模组
WO2019041654A1 (zh) 一种具有超窄下边框的液晶显示面板及其制造方法
WO2020124835A1 (zh) 发光面板及显示装置
WO2020124926A1 (zh) 柔性oled面板

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20852387

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20852387

Country of ref document: EP

Kind code of ref document: A1