WO2023116549A1 - 显示面板和智能设备 - Google Patents

显示面板和智能设备 Download PDF

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Publication number
WO2023116549A1
WO2023116549A1 PCT/CN2022/139350 CN2022139350W WO2023116549A1 WO 2023116549 A1 WO2023116549 A1 WO 2023116549A1 CN 2022139350 W CN2022139350 W CN 2022139350W WO 2023116549 A1 WO2023116549 A1 WO 2023116549A1
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Prior art keywords
isolation
display panel
layer
area
substrate
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PCT/CN2022/139350
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English (en)
French (fr)
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石江波
周洋
龙浩晖
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华为技术有限公司
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Publication of WO2023116549A1 publication Critical patent/WO2023116549A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and an intelligent device using the display panel.
  • Active-matrix organic light-emitting diode Active-matrix organic light-emitting diode, AMOLED
  • smart devices especially smart devices with full screens and foldable screens.
  • a smart device with a full screen includes a display panel. After the display panel is manufactured, it is necessary to cut the display panel by laser to form an opening for accommodating the camera in the display area.
  • the display panel includes an evaporated layer. During laser cutting to form an opening, the evaporated layer will be cut to expose the cut end face of the evaporated layer. Water and oxygen in the environment will invade along the cut end face of the evaporated layer, and eventually cause the display panel to fail.
  • the cut end surface of the evaporated layer is encapsulated to reduce the failure risk of the display panel to a certain extent.
  • the encapsulation method in the prior art is not effective in isolating water and oxygen.
  • the evaporated layer also includes a conductive material layer. Under the action of an electric field, the conductive material layer will react with substances in the environment, thereby causing package failure.
  • the first aspect of the present application provides a display panel, the display panel is provided with a mounting hole, the display panel defines a packaging area and a display area, the packaging area surrounds the mounting hole, and the display area surrounds the packaging area and connected to the encapsulation area; the display panel includes:
  • each of the isolation posts surrounds the installation hole
  • an isolation layer covering at least part of the plurality of isolation columns and located in the packaging area
  • the light emitting layer is partly located in the display area and partly located in the packaging area, the installation hole penetrates the light emitting layer, and the part of the light emitting layer located in the display area is formed on the substrate and has the plurality of isolation columns
  • the surface of the luminescent layer located in the encapsulation area is formed on the surface of the substrate having the plurality of isolation columns and the surface of the isolation layer away from the substrate, the luminescent layer is located in the display area
  • the above-mentioned display panel is provided with a mounting hole, and the wall of the mounting hole is also the opening end face of the display panel. Water and oxygen in the environment can easily intrude into the display panel from the end face.
  • the above-mentioned display panel includes an isolation column, and the isolation column forms a retaining wall around the installation hole, which is beneficial to prevent water and oxygen from spreading in the display device. Therefore, the above-mentioned display panel is provided with spacers, which is beneficial to avoid the failure of the display panel caused by water and oxygen intrusion into the display panel, thereby improving the production yield of the display panel.
  • the display panel also includes an isolation layer that at least partially covers the isolation column. The isolation layer is equivalent to increasing the height of the retaining wall around the installation hole, which is conducive to improving the effect of isolating water and oxygen, and further improving the production quality of the display panel. Rate.
  • each of the isolation columns is arranged at intervals.
  • the isolation column closest to the installation hole is not covered by the isolation layer.
  • the isolation column closest to the installation hole that is, the closest to the end surface
  • the end surface of the display panel will basically have water and oxygen intrusion, so it is also meaningful to install an isolation layer on the isolation column. Therefore, the isolation layer does not cover the isolation column, which can save materials and simplify the manufacturing process.
  • the plurality of isolation columns are divided into a plurality of isolation column groups
  • the isolation layer includes a plurality of isolation units, each isolation unit covers an isolation column group, and the plurality of isolation column groups are at least partially covered by the isolation layer.
  • a cross-sectional shape of each of the isolation columns perpendicular to the substrate is an inverted trapezoid.
  • the display panel further includes an inorganic layer covering the plurality of isolation columns, the isolation layer and the light emitting layer.
  • the installation holes are formed by cutting after the formation of each isolation post, isolation layer, light emitting layer and inorganic layer. During the cutting process, there is a certain pulling effect on the inorganic layer, so that the inorganic layer may be peeled off from the display panel under force.
  • the inorganic layer by adding an isolation layer, the inorganic layer has greater ups and downs in the direction perpendicular to the substrate, and by including a plurality of isolation units to respectively cover the isolation column group, the entire isolation layer has multiple height differences, That is to say, the smoothness of the inorganic layer in this embodiment is reduced.
  • the inorganic layer will be subjected to greater resistance when being pulled due to cutting, which is beneficial to avoid peeling off of the inorganic layer due to the laser cutting process, thereby helping to improve the production yield of the display panel.
  • the light-emitting layer and the conductive structure (such as the driving layer) on the substrate are not only physically spaced apart, but also the electrical connection between the light-emitting layer and the above-mentioned conductive structure is isolated.
  • the light-emitting layer Since the light-emitting layer is electrically connected to the conductive structure on the substrate, the light-emitting layer reacts with water and oxygen in the environment due to the action of the electric field, which aggravates the failure of the display panel.
  • the electrical connection between the light-emitting layer and the above-mentioned conductive structure is isolated. , which is beneficial to further reducing the failure risk of the display panel.
  • the isolation layer does not cover the isolation column closest to the installation hole among the plurality of isolation columns.
  • the area between the isolation column closest to the installation hole (that is, the closest to the end surface) on the display panel and the end surface will basically have water and oxygen intrusion, and it is not meaningful to set an isolation layer on the isolation column. Therefore, the isolation The layer does not cover the isolation column, which can save materials and simplify the manufacturing process.
  • the number of the isolation columns is greater than or equal to 7.
  • the display panel is an active matrix organic light emitting diode display panel.
  • Organic light-emitting materials are easily damaged by water and oxygen.
  • the display device of the present application is an active matrix organic light-emitting diode display panel, it is more important to isolate water and oxygen.
  • the second aspect of the present application provides a smart device, including the display panel as described in any one of the above embodiments.
  • the smart device mentioned above includes a display panel.
  • the display panel is provided with a mounting hole.
  • the wall of the mounting hole is also the end face of the display panel. Water and oxygen in the environment can easily invade the display panel from the end face.
  • the above-mentioned display panel includes an isolation column, and the isolation column forms a retaining wall around the installation hole, which is beneficial to prevent water and oxygen from spreading in the display device. Therefore, the above-mentioned display panel is provided with spacers, which is beneficial to avoid the failure of the display panel caused by water and oxygen intrusion into the display panel, thereby improving the production yield of the display panel.
  • the display panel also includes an isolation layer that at least partially covers the isolation column. The isolation layer is equivalent to increasing the height of the retaining wall around the installation hole, which is conducive to improving the effect of isolating water and oxygen, and further improving the production quality of the display panel. rate, thereby improving the production yield of smart devices.
  • FIG. 1 is a three-dimensional structure diagram of a smart device according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a three-dimensional structure of a display panel in the smart device shown in FIG. 1 .
  • FIG. 3 is a schematic cross-sectional structure diagram of the display panel along line III-III in FIG. 2 .
  • FIG. 4 is a schematic plan view of the substrate and isolation columns in FIG. 3 .
  • Figure 5 is a schematic plan view of the substrate, isolation column and isolation layer in Figure 3
  • FIG. 6 is a schematic cross-sectional structure diagram of a display panel edge in a modified embodiment.
  • FIG. 7 is a schematic cross-sectional structure diagram of a display panel in a pair of examples.
  • smart device 1 display panel 10, 30 Substrate 11, 31 Insulation 111 driver layer 112, 312
  • electrical connection should be understood in a broad sense.
  • electrical connection can refer to a physical direct connection, or it can refer to an electrical connection through an intermediary, that is, an indirect connection, such as through resistance, inductance , or connections made by other electronic devices.
  • the smart device of this application is used to display images.
  • Smart devices can be devices such as mobile phones, computers, tablets, and televisions. Please refer to FIG. 1 , in this embodiment, the smart device 1 is used as an example for illustration with a full-screen mobile phone.
  • the smart device 1 of this embodiment includes a display panel 10 , and the display panel 10 is an AMOLED display panel. In some embodiments, the display panel 10 is flexible
  • the smart device 1 may also include other structures such as a touch panel, and this application mainly describes the structure of the display panel 10 .
  • the display panel 10 is provided with an installation hole OP, and the installation hole OP is used for installing a camera in a subsequent manufacturing process.
  • the installation hole OP is formed by laser cutting the display panel 10 .
  • an end surface S is formed on the display panel 10 . That is, the end surface S is the hole wall of the mounting hole OP.
  • the display panel 10 defines an encapsulation area A1 , and the above failure risk is reduced through the structure in the encapsulation area A1 of the display panel 10 .
  • the encapsulation area A1 surrounds the installation hole OP, and the structure in the encapsulation area A1 can prevent water and oxygen in the air from intruding from the end surface S along the direction X of the display panel 10 .
  • the installation hole OP is circular, and the package area A1 corresponds to an annular area surrounding the installation hole OP.
  • the encapsulation area A1 still deposits luminescent materials and the like, but during the operation of the display panel 10 , the structures in the encapsulation area A1 do not display images.
  • the display panel 10 includes a substrate 11 , a plurality of isolation columns 12 , an isolation layer 13 and a light emitting layer 14 .
  • a plurality of isolation columns 12 are arranged at intervals on the same surface of the substrate 11, the isolation layer 13 is located on the surface of the substrate 11 formed with the isolation columns 12 and covers at least part of the isolation columns 12, and the luminescent layer 14 is located on the surface of the substrate 11 formed with the isolation layer 13 and located on the surface of the isolation layer 13 away from the substrate 11 .
  • the substrate 11 may include a plurality of insulating layers 111 stacked in sequence and a driving layer 112 formed on the surface of the insulating layer 111 .
  • the material of the insulating layer 111 can be silicon oxide, silicon nitride, etc., and is used to carry and support the driving layer 112 , isolation pillars 12 , isolation layer 13 , light emitting layer 14 and other structures.
  • the driving layer 112 is formed with a driving circuit, and the material of the driving circuit can be metal.
  • the driving layer 112 is used to drive part of the light emitting layer 14 to emit light to display images.
  • Each isolation column 12 is located on a side of the driving layer 112 away from the insulating layer 111 , and each isolation column 12 is located in the packaging area A1.
  • Each spacer column 12 is arranged at intervals on the surface of the driving layer 112 . Please refer to FIG. 3 and FIG. 4 together. In this embodiment, the distances between adjacent spacers 12 are equal.
  • Each isolation post 12 surrounds the installation hole OP. That is, each spacer column 12 forms a barrier around the installation hole OP to block water and oxygen.
  • a plurality of isolation columns 12 are formed by etching a metal substrate.
  • the metal substrate includes two layers of titanium (Ti) 123 and aluminum (Al) 124 between the two layers of titanium. Therefore, in this embodiment, each isolation column 12 is a Ti/Al/Ti stacked structure.
  • the display panel 10 further includes wires (not shown) for transmitting electrical signals (such as gate scanning signals, data signals, etc.).
  • the wiring is formed by etching the metal substrate. Therefore, in this embodiment, each spacer column 12 is made of the same material as the wiring, and can be formed in the same manufacturing process, which is beneficial to reduce the manufacturing steps of the display panel 10 .
  • the thickness of the metal substrate forming the traces in the display panel 10 is relatively large, so that the height of each spacer column 12 is relatively large, and each spacer column 12 is used to form a barrier wall around the installation hole OP. Water and oxygen. Therefore, in this embodiment, setting the isolation columns 12 and the wires to be formed in the same process using the same metal base material is also beneficial to increase the height of the isolation columns 12, thereby improving the effect of blocking water and oxygen.
  • each spacer 12 has a top surface 121 away from the substrate 11 and a bottom surface 122 close to the substrate 11, the top surface 121 and the bottom surface 122 are parallel, and the width of the top surface 121 (the length in the X direction) is smaller than the bottom surface
  • the width (the length in the X direction) of 122 is such that in the view of FIG. 3 (that is, the cross section perpendicular to the direction of the substrate 11 ), the cross-sectional shape of each spacer column 12 is trapezoidal.
  • the top surface 121 and the bottom surface 122 have the same width, so that in the view of FIG. 3 , the cross-sectional shape of each spacer column 12 is a rectangle.
  • the number of isolation columns 12 is five.
  • the number of isolation columns 12 is greater than or equal to seven.
  • the isolation layer 13 is an organic material; in other embodiments, the isolation layer 13 can be other insulating materials that isolate water and oxygen. In this embodiment, the isolation layer 13 covers part of the isolation columns 12 and fills a part of the area between the isolation columns 12 .
  • the five spacer columns 12 of the display panel 10 are divided into three spacer column groups, wherein the spacer column 120 closest to the installation hole OP is one group, and the remaining spacer column groups are divided into three spacer column groups. 12 two by two as a separation column group, and the separation columns 12 in the same separation column group are arranged adjacent to each other.
  • the isolation layer 13 includes two isolation units 131 arranged at intervals, each isolation unit 131 covers a group of isolation columns other than the isolation column 120, and each isolation unit 131 fills each isolation column 12 in the covered isolation column group the area between.
  • the area A2 between the isolation column 120 and the end surface S on the display panel 10 closest to the installation hole OP (that is, the closest to the end surface S) will basically have water and oxygen intrusion. It is meaningless to arrange the isolation layer 13 on the column 120, so the isolation layer 13 does not cover the isolation column 120, which can save materials and simplify the manufacturing process.
  • the number and grouping of the isolation columns 12 may also be different.
  • the isolation layer 13 may cover all the isolation columns 12 and fill the area between all the isolation columns 12 .
  • the light emitting layer 14 is formed after the isolation layer 13 is formed. Since part of the isolation columns 12 are not covered by the isolation layer 13, and the area between part of the isolation columns 12 is not covered by the isolation layer 13, the subsequently formed luminescent layer 14 partially covers the surface of the isolation layer 13 away from the substrate 11, and the other part covers the surface of the isolation layer 13 away from the substrate 11.
  • the driving layer 112 is away from the surface of the insulating layer 111 .
  • the display panel 10 further includes an inorganic layer 15 formed by a vapor phase deposition method for isolating water and oxygen.
  • the inorganic layer 15 is located on the surface of the substrate 11 and covers each isolation column 12 , isolation layer 13 and light emitting layer 14 respectively. That is, each isolation column 12 , isolation layer 13 and light emitting layer 14 is located between the driving layer 112 and the inorganic layer 15 .
  • the installation hole OP penetrates through the substrate 11 , the light emitting layer 14 and the inorganic layer 15 .
  • the isolation layer 13 is beneficial to increase the height of the retaining wall, thereby improving the effect of blocking water and oxygen.
  • the display panel 10 further defines a display area A3, which surrounds the periphery of the encapsulation area A1 and is connected to the encapsulation area A1.
  • the light emitting layer 14 includes a first electrode layer, a second electrode layer and an organic light emitting material layer between the first electrode layer and the second electrode layer.
  • the first electrode layer is a cathode
  • the second electrode layer is an anode.
  • the electrons are injected, and the charge carriers in the anode and the cathode are recombined in the organic light-emitting material layer and quenched, so that the organic light-emitting material layer emits light wave radiation.
  • the above-mentioned organic light-emitting material layer can emit light.
  • the first electrode layer and the second electrode layer are electrically connected to the driving layer 112 or other structures to receive a driving signal to drive the organic light-emitting material layer to emit light.
  • the encapsulation area A1 does not need to display images, that is, does not need to emit light, only the first electrode layer and the organic light-emitting material layer are formed in the encapsulation area A1, and the second electrode layer is not formed, which can save materials. , Simplify the process.
  • the difference between the display panel 30 and the display panel 10 in this embodiment is mainly that the display panel 30 only forms a retaining wall around the installation hole OP' through the isolation posts 32, and does not include an isolation layer.
  • the installation hole OP is formed by laser cutting after the formation of each isolation post 12 , isolation layer 13 , light emitting layer 14 and inorganic layer 15 .
  • the laser cutting process there is a certain pulling effect on the inorganic layer 15 , so that the inorganic layer 15 may be peeled off from the display panel 10 under the force of the extending direction X.
  • the addition of the isolation layer 13 in this embodiment makes the inorganic layer 15 have greater ups and downs in the Y direction, that is, the inorganic layer in the comparative example is more gentle. Then, in the process of laser cutting to form the installation hole OP, the inorganic layer 15 will be subjected to greater resistance when being pulled due to laser cutting, which is beneficial to avoid the peeling of the inorganic layer 15 due to the laser cutting process, thereby helping to improve the production yield of the display panel 10 .
  • the light-emitting layer 34 directly contacts the surface of the spacer 32 away from the substrate 31 , and the surface of the spacer 32 close to the substrate 31 directly contacts the driving layer 312 .
  • the spacer 32 is a stacked structure of TiAlTi and has certain conductivity
  • the luminescent layer 34 may be electrically connected to the driving layer 312 through the spacer 32 , and the luminescent layer 34 can be subjected to an electric field.
  • the end surface S' of the display panel 10 is likely to react with substances in the air (such as iodide ions), causing further failure of the display panel 10.
  • the light emitting layer 14 and the driving layer 112 are not only physically spaced apart, but also the electrical connection between the light emitting layer 14 and the driving layer 112 is isolated, which is beneficial to further reducing the size of the display panel 10. risk of failure.
  • the width of the top surface 121 is greater than the same width of the bottom surface 122, so that in the cross-sectional view along the line III-III in Fig. 2, the cross-sectional shape of each spacer column 12 is a Inverted trapezoid. Since the cross-sectional shape of the spacer 12 is an inverted trapezoid, when the inorganic layer 15 covers the spacer 12 and the spacer 13 , the inorganic layer 15 can form an acute angle with the top surface 121 of the spacer 12 covered.
  • the inorganic layer 15 tends to be peeled off due to the laser cutting process, the inorganic layer 15 is difficult to be peeled off due to the above-mentioned angle relationship between the inorganic layer 15 and the spacer 12 being blocked by the spacer 12 and the spacer 13 .
  • the structure of the spacer columns 12 in the display panel 10 in the above modified embodiment is also beneficial to reduce the risk of the inorganic layer 15 being peeled off, thereby improving the manufacturing yield of the display panel 10 .

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Abstract

本申请提供一种显示面板和智能设备，显示面板开设有安装孔，显示面板定义有封装区和显示区，封装区围绕安装孔，显示区围绕封装区且与封装区连接；显示面板包括：基板，部分位于封装区且部分位于显示区，安装孔贯穿基板；多个隔离柱，形成于基板的同一表面上，且位于封装区，每一隔离柱环绕安装孔；隔离层，覆盖至少部分多个隔离柱，且位于封装区；以及发光层，部分位于显示区且部分位于封装区，安装孔贯穿发光层，发光层位于显示区的部分形成于基板具有多个隔离柱的表面，发光层位于封装区的部分形成于基板具有多个隔离柱的表面和隔离层远离基板的表面，发光层位于显示区的部分用于发光以显示图像。

Description

显示面板和智能设备
相关申请的交叉引用
本申请要求于2021年12月22日提交中国专利局、申请号为202123256430.4、申请名称为“显示面板和智能设备”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和应用该显示面板的智能设备。
背景技术
有源矩阵有机发光二极管(Active-matrix organic light-emitting diode，AMOLED)显示装置在智能设备中的应用越来越多，尤其可应用于具有全面屏和折叠屏的智能设备。
具有全面屏的智能设备包括显示面板，显示面板制作完成后，需要通过激光切割显示面板以在显示区形成容纳摄像头的开口。显示面板包括蒸镀层，激光切割形成开口的过程中会切割蒸镀层使得蒸镀层的切割端面暴露，环境中水和氧会沿着蒸镀层的切割端面入侵，并最终导致显示面板失效。
现有技术中会对蒸镀层的切割端面进行封装以一定程度减轻显示面板失效风险。但现有技术中的封装方式隔绝水和氧的效果不佳。且蒸镀层还包括导电的材料层，在电场的作用下，导电的材料层会与环境中物质发生反应，进而造成封装失效。
发明内容
本申请第一方面提供一种显示面板，所述显示面板开设有安装孔，所述显示面板定义有封装区和显示区，所述封装区围绕所述安装孔，所述显示区围绕所述封装区且与所述封装区连接；所述显示面板包括：
基板，部分位于所述封装区且部分位于所述显示区，所述安装孔贯穿所述基板；
多个隔离柱，形成于所述基板的同一表面上，且位于所述封装区，每一所述隔离柱环绕所述安装孔；
隔离层，覆盖至少部分所述多个隔离柱，且位于所述封装区；以及
发光层，部分位于所述显示区且部分位于所述封装区，所述安装孔贯穿所述发光层，所述发光层位于所述显示区的部分形成于所述基板具有所述多个隔离柱的表面，所述发光层位于所述封装区的部分形成于所述基板具有所 述多个隔离柱的表面和所述隔离层远离所述基板的表面，所述发光层位于所述显示区的部分用于发光以显示图像。
上述显示面板开设有安装孔，安装孔的孔壁也即是显示面板的开孔端面，环境中的水和氧易从端面侵入显示面板。上述显示面板包括隔离柱，隔离柱在安装孔周围形成挡墙，有利于阻挡水和氧在显示装置内蔓延。因此上述显示面板通过设置隔离柱，有利于避免水和氧侵入显示面板造成显示面板失效的问题，从而提升显示面板的制作良率。在此基础上，显示面板还包括至少部分覆盖隔离柱的隔离层，隔离层相当于加高了安装孔周围的挡墙高度，有利于提升隔绝水和氧的效果，进一步提升显示面板的制作良率。
于一些实施例中，各个所述隔离柱间隔设置。
如此，相当于在安装孔周围形成多个挡墙，有利于提升隔绝水和氧的效果，进一步提升显示面板的制作良率。
于一些实施例中，所述多个隔离柱中最靠近所述安装孔的隔离柱未被所述隔离层所覆盖。
由于安装孔的端面的存在，显示面板上最靠近安装孔(也即最靠近端面)的隔离柱与端面之间的区域基本都会有水和氧侵入，因此在该隔离柱上设置隔离层意义也不大，因此隔离层不覆盖该隔离柱，可以节约材料、简化制程。
于一些实施例中，所述多个隔离柱被划分为多个隔离柱组，所述隔离层包括多个隔离单元，每一隔离单元覆盖一隔离柱组，所述多个隔离柱组至少部分被所述隔离层覆盖。
于一些实施例中，每一所述隔离柱在垂直于所述基板方向的剖面形状为倒梯形。
于一些实施例中，所述显示面板还包括无机层，所述无机层覆盖所述多个隔离柱、所述隔离层及所述发光层。
安装孔是在各个隔离柱、隔离层、发光层及无机层形成之后通过切割形成。切割过程中，对无机层有一定的拉扯作用，使得无机层受力而可能从显示面板中被剥离。本实施例中通过增设隔离层，使得无机层在垂直于基板的方向上具有更大的高低起伏，且通过包括多个隔离单元分别覆盖隔离柱组，也使得整个隔离层具有多处高低落差，也即使得本实施例中的无机层的平缓程度减小。则在切割形成安装孔过程中，无机层因切割被拉扯时会受到较大阻力，有利于避免无机层因激光切割过程而剥离，从而有利于提升显示面板的制作良率。进一步的，因此本实施例中通过增设隔离层，使得发光层与基板上的导电结构(例如驱动层)不仅在物理位置上被间隔开，还隔绝了发光层与上述导电结构的电性连接。由于发光层与基板上的导电结构电性连接时因为电场作用而使得发光层与环境中水和氧发生反应而加重显示面板失效，本实施例中通过隔绝发光层与上述导电结构的电性连接，有利于进一步降低显示面板的失效风险。
于一些实施例中，所述隔离层不覆盖所述多个隔离柱中最接近所述安装 孔的隔离柱。
由于端面的存在，显示面板上最靠近安装孔(也即最靠近端面)的隔离柱与端面之间的区域基本都会有水和氧侵入，在隔离柱上设置隔离层意义也不大，因此隔离层不覆盖隔离柱，可以节约材料、简化制程。
于一些实施例中，所述隔离柱的数量大于等于7。
如此，有利于更好地隔绝水和氧。
于一些实施例中，所述显示面板为有源矩阵有机发光二极管显示面板。
有机发光材料极易受到水和氧破坏，本申请的显示装置为有源矩阵有机发光二极管显示面板时，隔离水和氧具有更重要的意义。
本申请第二方面提供一种智能设备，包括如上述任一实施例中所述的显示面板。
上述智能设备包括显示面板，显示面板开设有安装孔，安装孔的孔壁也即是显示面板的开孔端面，环境中的水和氧易从端面侵入显示面板。上述显示面板包括隔离柱，隔离柱在安装孔周围形成挡墙，有利于阻挡水和氧在显示装置内蔓延。因此上述显示面板通过设置隔离柱，有利于避免水和氧侵入显示面板造成显示面板失效的问题，从而提升显示面板的制作良率。在此基础上，显示面板还包括至少部分覆盖隔离柱的隔离层，隔离层相当于加高了安装孔周围的挡墙高度，有利于提升隔绝水和氧的效果，进一步提升显示面板的制作良率，从而提升智能设备的制作良率。
附图说明
为了更清楚地说明本申请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地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可根据这些附图获得其他的附图。
图1为本申请实施例的智能设备的立体结构图。
图2为图1所示智能设备内显示面板的立体结构示意图。
图3为图2中显示面板沿Ⅲ-Ⅲ线的剖面结构示意图。
图4为图3中基板和隔离柱的平面结构示意图。
图5为图3中基板、隔离柱及隔离层的平面结构示意图
图6为一变更实施例中显示面板沿的剖面结构示意图。
图7为一对比例中显示面板的剖面结构示意图。
主要元件符号说明
智能设备 1
显示面板 10、30
基板 11、31
绝缘层 111
驱动层 112、312
隔离柱 12、120、32
顶面 121
底面 122
隔离层 13
隔离单元 131
发光层 14、34
无机层 15
封装区 A1
区域 A2
显示区 A3
安装孔 OP、OP’
端面 S、S’
方向 X、Y
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
应理解，在本申请中除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B。本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。
在本申请中，“示例的”、“在一些实施例中”、“在另一些实施例中”等用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
另外，本申请中涉及的“第一”、“第二”等词汇，仅用于区分描述的目的，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，也不能理解为指示或暗示顺序。
在本申请中，“电连接”应做广义的理解，例如，“电连接”可以指物理上的直接连接，也可以指通过中间媒介实现电学上的连接，即间接连接，例如通过电阻、电感，或其他电子器件实现的连接。
本申请的智能设备用于显示图像。智能设备可为手机、电脑、平板、电视等装置。请参阅图1，本实施例中，以智能设备1为全面屏手机进行举例说明。
请一并参阅图1和图2，本实施例的智能设备1包括显示面板10，显示面板10为AMOLED显示面板。于一些实施例中，显示面板10为柔性
AMOLED显示面板。智能设备1还可包括触控面板等其他结构，本申请主要对显示面板10的结构进行描述。
请继续参阅图2，显示面板10开设有安装孔OP，安装孔OP用于在后续 的制程中安装摄像头。本实施例中，安装孔OP通过激光切割显示面板10形成。激光切割显示面板10时，在显示面板10上形成端面S。也即，端面S为安装孔OP的孔壁。
端面S裸露于空气中时，尤其是裸露于制作显示面板10过程中的高温高湿的空气中时，水和氧易从端面S入侵显示面板10内的各个元件的材料，导致显示面板10失效。本实施例中，显示面板10定义有封装区A1，通过显示面板10的封装区A1内的结构降低上述失效风险。本申请中，封装区A1围绕安装孔OP的四周，封装区A1内的结构可阻断空气中的水和氧从端面S沿着显示面板10方向X继续侵入。本实施例中，安装孔OP为圆形，则封装区A1对应为一环绕安装孔OP的环形区域。本实施例中，制作显示面板10的过程中，封装区A1仍然会沉积发光材料等，但显示面板10工作过程中，封装区A1内的结构并不显示图像。
请参阅图3，显示面板10包括基板11、多个隔离柱12、隔离层13及发光层14。多个隔离柱12间隔设置于基板11的同一表面上，隔离层13位于基板11形成有隔离柱12的表面上并覆盖至少部分隔离柱12，发光层14位于基板11形成有隔离层13的表面上并位于隔离层13远离基板11的表面。
本实施例中，基板11可包括依次层叠的多层绝缘层111和形成于绝缘层111表面的驱动层112。绝缘层111的材料可为氧化硅、氮化硅等，用于承载和支撑上述驱动层112、隔离柱12、隔离层13、发光层14等结构。驱动层112形成有驱动电路，驱动电路的材料可为金属，驱动层112用于驱动部分发光层14发光以显示图像。
每一隔离柱12位于驱动层112远离绝缘层111的一侧，且每一隔离柱12位于封装区A1内。各个隔离柱12在驱动层112的表面间隔设置。请一并参阅图3和图4，本实施例中，相邻隔离柱12之间间距相等。每一隔离柱12环绕于安装孔OP的四周。也即，每一隔离柱12在安装孔OP的四周形成一挡墙阻隔水和氧。
请再参阅图3，本实施例中，多个隔离柱12由一金属基材经蚀刻形成。该金属基材包括两层金属钛(Ti)123及位于两层金属钛之间的金属铝(Al)124。因此本实施例中，每一隔离柱12为一Ti/Al/Ti层叠结构。本实施例中，显示面板10还包括用于传输电信号(例如栅极扫描信号、数据信号等)的走线(图未示)。该走线由该金属基材经蚀刻形成。因此本实施例中，各个隔离柱12与走线材料相同，可在同一制程中形成，有利于减少显示面板10的制作步骤。且本实施例中，显示面板10中形成走线的金属基材厚度较大，使得每一隔离柱12的高度较大，每一隔离柱12用于在安装孔OP的四周形成一挡墙阻隔水和氧，因此本实施例中通过设置各个隔离柱12与走线采用同样的金属基材在同一制程中形成，还有利于增加隔离柱12的高度，从而提升阻隔水和氧的效果。
本实施例中，每一隔离柱12具有一远离基板11的顶面121和靠近基板11的底面122，顶面121和底面122平行，且顶面121的宽度(在X方向的 长度)小于底面122的宽度(在X方向的长度)，使得在图3视图中(也即垂直于基板11方向的剖面)，每一隔离柱12的剖面形状为梯形。于其他实施例中，顶面121和底面122宽度相同，使得在图3视图中，每一隔离柱12的剖面形状为矩形。
本实施例中，隔离柱12的数量为5个。
于其他实施例中，为了更好地隔绝水和氧，隔离柱12的数量大于等于7个。
本实施例中，隔离层13为有机材料；于其他实施例中，隔离层13可为其他绝缘且隔离水和氧的材料。本实施例中，隔离层13覆盖部分隔离柱12，并填充部分隔离柱12之间的区域。
请一并参阅图3和图5，本实施例中，显示面板10的5个隔离柱12被划分为3个隔离柱组，其中最靠近安装孔OP的隔离柱120为一组，其余隔离柱12两两作为一隔离柱组，同一隔离柱组中的隔离柱12相邻排列。隔离层13包括两个间隔设置的隔离单元131，每一隔离单元131对应覆盖除隔离柱120之外的一隔离柱组，且每一隔离单元131填充所覆盖的隔离柱组中各个隔离柱12之间的区域。
本实施例中，由于端面S的存在，显示面板10上最靠近安装孔OP(也即最靠近端面S)的隔离柱120与端面S之间的区域A2基本都会有水和氧侵入，在隔离柱120上设置隔离层13意义也不大，因此隔离层13不覆盖隔离柱120，可以节约材料、简化制程。
于其他实施例中，隔离柱12的数量和分组方式也可不同。于其他实施例中，隔离层13可覆盖全部隔离柱12，且填充所有隔离柱12之间的区域。
请再参阅图3，本实施例中，在形成隔离层13后形成发光层14。由于部分隔离柱12未被隔离层13覆盖，且部分隔离柱12之间的区域未被隔离层13覆盖，后续形成的发光层14部分覆盖于隔离层13远离基板11的表面，另一部分覆盖于驱动层112远离绝缘层111的表面。
本实施例中，显示面板10还包括无机层15，无机层15通过气相沉积法形成，用于隔绝水和氧。无机层15位于基板11的表面，分别覆盖各个隔离柱12、隔离层13及发光层14。也即，各个隔离柱12、隔离层13及发光层14位于驱动层112与无机层15之间。本实施例中，安装孔OP贯穿了基板11、发光层14及无机层15。
本实施例中，通过设置隔离层13覆盖部分隔离柱12，使得隔离柱12和隔离层13共同在安装孔OP周围形成挡墙阻隔水和氧。因此隔离层13有利于增加挡墙的高度，从而有利于提高阻隔水和氧的效果。
本实施例中，显示面板10还定义有显示区A3，显示区A3围绕封装区A1外围且与封装区A1连接。发光层14包括第一电极层、第二电极层及第一电极层与第二电极层之间的有机发光材料层。本实施例中第一电极层为阴极，第二电极层为阳极，第一电极层与第二电极层形成一电压差(且电压差大于某一值)时，从阳极注入空穴，从阴极注入电子，阳极和阴极中的载流 子在有机发光材料层中复合发生淬灭，从而使得有机发光材料层发出光波辐射。此时，上述有机发光材料层可发光。本实施例中，第一电极层和第二电极层通过与驱动层112或其他结构电连接接收驱动信号驱动有机发光材料层发光。
与本申请其他实施例中，由于封装区A1不需要显示图像，也即不需要发光，封装区A1内只形成第一电极层和有机发光材料层，而不形成第二电极层，可以节约材料、简化制程。
请参阅图6，于一对比例中，显示面板30与本实施例中显示面板10的区别主要在于，显示面板30仅通过隔离柱32形成围绕安装孔OP’的挡墙，不包括隔离层。
本实施例中，安装孔OP是在各个隔离柱12、隔离层13、发光层14及无机层15形成之后通过激光切割形成。激光切割过程中，对无机层15有一定的拉扯作用，使得无机层15受到延伸方向X的力而可能从显示面板10中被剥离。
相较于图6所示的对比例，本实施例中通过增设隔离层13，使得无机层15在Y方向上具有更大的高低起伏，也即对比例中无机层更加平缓。则在激光切割形成安装孔OP过程中，无机层15因激光切割被拉扯时会受到较大阻力，有利于避免无机层15因激光切割过程而剥离，从而有利于提升显示面板10的制作良率。
进一步的，由图6可知，对比例中发光层34直接接触隔离柱32远离基板31的表面，隔离柱32靠近基板31的表面直接接触驱动层312。由于隔离柱32为TiAlTi的层叠结构，具有一定的导电性，发光层34可能通过隔离柱32与驱动层312建立电连接，则发光层34可受到电场作用。发光层34受到电场作用时，显示面板10的端面S’易与空气中的物质(例如碘离子)发生反应，造成显示面板10进一步失效。
因此本实施例中通过增设隔离层13，使得发光层14与驱动层112不仅在物理位置上被间隔开，还隔绝了发光层14与驱动层112的电性连接，有利于进一步降低显示面板10的失效风险。
请参阅图7，于本申请一变更实施例中，顶面121的宽度大于底面122的宽度相同，使得在沿图2中线Ⅲ-Ⅲ的剖面视图中，每一隔离柱12的剖面形状为一倒梯形。由于隔离柱12的剖面形状为倒梯形，无机层15覆盖隔离柱12和隔离层13时，无机层15可与所覆盖的隔离柱12的顶面121形成锐角。当无机层15因为激光切割过程有被剥离的趋势时，无机层15可因为上述的与隔离柱12之间的角度关系受到隔离柱12和隔离层13的阻挡而难以被剥离。
因此上述变更实施例中的显示面板10中隔离柱12的结构还有利于降低无机层15被剥离的风险，从而有利于提升显示面板10的制作良率。
应理解，本申请的各实施方式可以任意进行组合，例如可以单独使用，也可以相互结合使用，以实现不同的技术效果，对此不作限定。
以上内容，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种显示面板，其特征在于，所述显示面板开设有安装孔，所述显示面板定义有封装区和显示区，所述封装区围绕所述安装孔，所述显示区围绕所述封装区且与所述封装区连接；所述显示面板包括：
    基板，部分位于所述封装区且部分位于所述显示区，所述安装孔贯穿所述基板；
    多个隔离柱，形成于所述基板的同一表面上，且位于所述封装区，每一所述隔离柱环绕所述安装孔；
    隔离层，覆盖至少部分所述多个隔离柱，且位于所述封装区；以及
    发光层，部分位于所述显示区且部分位于所述封装区，所述安装孔贯穿所述发光层，所述发光层位于所述显示区的部分形成于所述基板具有所述多个隔离柱的表面，所述发光层位于所述封装区的部分形成于所述基板具有所述多个隔离柱的表面和所述隔离层远离所述基板的表面，所述发光层位于所述显示区的部分用于发光以显示图像。
  2. 如权利要求1所述的显示面板，其特征在于，各个所述隔离柱间隔设置。
  3. 如权利要求1或2所述的显示面板，其特征在于，所述多个隔离柱被划分为多个隔离柱组，所述隔离层包括多个隔离单元，每一隔离单元覆盖一隔离柱组，所述多个隔离柱组至少部分被所述隔离层覆盖。
  4. 如权利要求3所述的显示面板，其特征在于，所述多个隔离柱中最靠近所述安装孔的隔离柱未被所述隔离层所覆盖。
  5. 如权利要求1-4任一项所述的显示面板，其特征在于，每一所述隔离柱在垂直于所述基板方向的剖面形状为倒梯形。
  6. 如权利要求1-5任一项所述的显示面板，其特征在于，所述显示面板还包括无机层，所述无机层覆盖所述多个隔离柱、所述隔离层及所述发光层。
  7. 如权利要求1-6任一项所述的显示面板，其特征在于，所述隔离层不覆盖所述多个隔离柱中最接近所述安装孔的隔离柱。
  8. 如权利要求1-7任一项所述的显示面板，其特征在于，所述隔离柱的数量大于等于7。
  9. 如权利要求1-8任一项所述的显示面板，其特征在于，所述显示面板为有源矩阵有机发光二极管显示面板。
  10. 一种智能设备，其特征在于，包括如权利要求1-9任一项所述的显示面板。
PCT/CN2022/139350 2021-12-22 2022-12-15 显示面板和智能设备 WO2023116549A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN110783491A (zh) * 2019-11-26 2020-02-11 京东方科技集团股份有限公司 一种显示面板及其制备方法、显示装置
WO2021196868A1 (zh) * 2020-03-31 2021-10-07 京东方科技集团股份有限公司 显示基板及显示面板
CN217544653U (zh) * 2021-12-22 2022-10-04 华为技术有限公司 显示面板和智能设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110783491A (zh) * 2019-11-26 2020-02-11 京东方科技集团股份有限公司 一种显示面板及其制备方法、显示装置
WO2021196868A1 (zh) * 2020-03-31 2021-10-07 京东方科技集团股份有限公司 显示基板及显示面板
CN217544653U (zh) * 2021-12-22 2022-10-04 华为技术有限公司 显示面板和智能设备

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