WO2020224009A1 - 一种显示面板、显示模组及电子装置 - Google Patents
一种显示面板、显示模组及电子装置 Download PDFInfo
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- WO2020224009A1 WO2020224009A1 PCT/CN2019/087795 CN2019087795W WO2020224009A1 WO 2020224009 A1 WO2020224009 A1 WO 2020224009A1 CN 2019087795 W CN2019087795 W CN 2019087795W WO 2020224009 A1 WO2020224009 A1 WO 2020224009A1
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- Prior art keywords
- sub
- blocking
- blocking portion
- display panel
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- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 108
- 239000000463 material Substances 0.000 claims description 31
- 239000004642 Polyimide Substances 0.000 claims description 9
- 229920001721 polyimide Polymers 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005538 encapsulation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 239000012044 organic layer Substances 0.000 description 14
- 238000004806 packaging method and process Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005530 etching Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- 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
- 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
- H10K59/17—Passive-matrix OLED displays
- H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
Definitions
- the present invention relates to the field of display technology, in particular to a display panel, a display module and an electronic device.
- OLED display panels Compared with traditional liquid crystal display panels, Organic Light-Emitting Diode (OLED) display panels have many advantages such as self-luminescence, wide viewing angle, high contrast, fast response speed, thinness and flexibility, and are therefore widely used. However, since OLEDs are very sensitive to oxygen and water, when they penetrate into the OLED devices, their lifespan will be affected. Therefore, OLED display panels need to be packaged with a packaging structure to isolate water and oxygen.
- the packaging method mostly adopts the thin film packaging method, and the common thin film packaging method is the inorganic-organic alternating type, in which the organic layer is usually inkjet printing (Ink Jet Printing, IJP) method, but this method is prone to overflow (overflow) in the production process. Therefore, it is necessary to provide a barrier (Dam) on the outside of the organic layer for blocking.
- IJP Ink Jet Printing
- the common manufacturing methods of the Dam structure are coating, exposure, and development.
- the blocking effect of the existing blocking portion is not good, especially for organic materials with low viscosity, which will cause more organic materials to overflow, reduce the packaging effect and shorten the service life of the display panel.
- the purpose of the present invention is to provide a display panel, a display module and an electronic device, which can improve the packaging effect and prolong the service life of the display panel.
- the present invention provides a display panel, which includes:
- the blocking portion surrounds the display area;
- the cross-sectional structure of the blocking portion includes:
- the first sub-blocking part
- At least one second sub-blocking portion is provided on the first sub-blocking portion; a plurality of the second sub-blocking portions partially cover the first sub-blocking portion;
- At least one blocking unit the blocking unit is provided on the second sub-blocking portion, the blocking unit includes at least two third sub-blocking portions, and the blocking unit corresponds to the second sub-blocking portion;
- the blocking unit partially covers the corresponding second sub-blocking part, and the gap between the tops of two adjacent third sub-blocking parts is smaller than the gap between the bottoms of two adjacent third sub-blocking parts.
- the present invention also provides a display module, which includes the above-mentioned display panel.
- the present invention also provides an electronic device, which includes the above-mentioned display module.
- the display panel, the display module, and the electronic device of the present invention include at least one blocking portion, the cross-sectional structure of the blocking portion includes: a first sub-blocking portion; at least one second sub-blocking portion, the second sub-blocking portion is provided On the first sub-blocking portion; a plurality of the second sub-blocking portions partially cover the first sub-blocking portion; at least one blocking unit, the blocking unit is provided on the second sub-blocking portion, so
- the blocking unit includes at least two third sub-blocking portions, and the blocking unit corresponds to the second sub-blocking portion; the blocking unit partially covers the corresponding second sub-blocking portion, and two adjacent third sub-blocking portions are adjacent to each other.
- the gap between the tops of the blocking parts is smaller than the gap between the bottoms of two adjacent third sub-blocking parts, so that the gap at the top of the blocking part of the present invention is small, and therefore the organic layer can be effectively prevented from overflowing.
- the packaging effect is improved and the service life of the display panel is prolonged.
- FIG. 1 is a schematic diagram of the structure of an existing display panel
- Figure 2 is a top view of a conventional display panel
- Figure 3 is a first cross-sectional view of the existing blocking part
- Figure 4 is a second cross-sectional view of the existing blocking portion
- Figure 5 is a third cross-sectional view of the existing blocking part
- Figure 6 is a fourth cross-sectional view of the existing blocking portion
- FIG. 7 is a top view of the display panel of the present invention.
- FIG. 8 is a schematic diagram of the first structure of the blocking part of the present invention.
- FIG. 9 is a schematic diagram of the second structure of the blocking part of the present invention.
- FIG. 10 is a schematic diagram of the third structure of the blocking part of the present invention.
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless specifically defined otherwise.
- the "above” or “below” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
- “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
- the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
- the existing organic light emitting diode display panel includes a base substrate 11, a pixel defining layer 12, an organic light emitting layer 13, a first inorganic layer 14, an organic layer 15 and a second inorganic layer 16.
- the base substrate 11 includes a glass substrate, a switch array layer, and an anode.
- the pixel defining layer 12 includes two pixel defining units 121, a first blocking portion 122, and a second blocking portion 123 arranged at intervals, wherein the organic light emitting layer 14 is located in a gap between two adjacent pixel defining units 121.
- the first inorganic layer 14 is provided on the pixel defining layer 12 and the first blocking portion 122 and the second blocking portion 123.
- the organic layer 15 is provided on a part of the first inorganic layer 14, and the second inorganic layer 16 is provided on the organic layer 15.
- the first blocking portion 122 and the second blocking portion 123 both surround the display area 101.
- the cross-sectional shape of the first blocking portion 122 is a regular trapezoid, which is usually manufactured by processes such as coating, exposure, development, curing, and etching.
- the material of the first blocking portion 122 is polyimide (PI) or polyimide doped with a water-absorbing material.
- the cross-sectional shape of the first blocking portion 122 can also be an inverted trapezoid. Since the gap at the top of the inverted trapezoid is small, it can better prevent the organic layer from overflowing and improve the packaging effect. .
- the material of the second blocking portion 123 is usually polyimide (PI).
- the cross-sectional structure of the second blocking portion 123 is a two-layer structure, which includes a first sub-blocking portion 21 and a second sub-blocking portion 22. Both the first sub-blocking portion 21 and the second sub-blocking portion 22 are coated, exposed, and developed. , Curing, etching and other processes, two exposures are required during the production process. Or it is made by coating, exposure, and developing process, and it needs to be exposed once with the mask (Halftone) process. As shown in FIG. 6, in another embodiment, the number of the second sub-blocking portion 22 is two
- the cross-sectional shapes of the first sub-blocking portion 21 and the second sub-blocking portion 22 are both positive trapezoids. Since more second sub-blocking portions 22 are provided in FIG. 6, the organic layer can be better prevented from overflowing. .
- FIG. 7 is a top view of the display panel of the present invention.
- the display panel of the present invention is an organic light emitting diode display panel, which includes a display area 101 and two blocking portions 30, each of the blocking portions 30 surrounding the display area.
- the cross-sectional structure of the blocking portion 30 includes: a first sub-blocking portion 31 and a second sub-blocking portion 32 and two blocking units 33.
- the first sub-blocking portion 31 may be located on the first blocking layer.
- the material of the first barrier layer may be polyimide.
- the first sub-blocking portion 31 may be formed by coating, exposing, developing, curing, etching and other processes.
- the cross-sectional shape of the first sub-blocking portion 31 is a regular trapezoid, and the cross-sectional shape is a longitudinal cross-sectional shape.
- the bottom angle a1 of the first sub-blocking portion 31 ranges from 30 degrees to 50 degrees.
- the width of the first sub-blocker 31 may be 40 ⁇ m.
- the thickness of the first sub-blocking portion 31 may be 1.5um.
- the second sub-blocking portion 32 may be located on the second blocking layer, and the second blocking layer may be made by coating and UV lamp curing processes.
- the cross-sectional shape of the second sub-blocking portion 32 is an inverted trapezoid, wherein the bottom angle a2 of the second sub-blocking portion 32 may range from 50 degrees to 70 degrees.
- the material of the second sub-blocking portion 32 is different from the material of the first sub-blocking portion 31.
- the second sub-blocking portion 32 partially covers (not completely) the first sub-blocking portion 31, that is, the area of the orthographic projection of the second sub-blocking portion 32 on the base substrate of the display panel is smaller than that of the first sub-blocking portion 31 The area of the orthographic projection on the base substrate.
- the width of the second sub-blocking portion 32 is 16 ⁇ m, and the thickness of the second sub-blocking portion 32 is 1.5 um.
- the blocking unit 33 is provided on the second sub-blocking portion 32, and the second sub-blocking portion 32 corresponds to the blocking unit 33; for example, in an embodiment, each of the second sub-blocking portions 32 Corresponds to one blocking unit 33. In one embodiment, each of the second sub-blocking portions 32 corresponds to at least two of the blocking units 33.
- the blocking unit 33 includes at least two third sub-blocking portions 331, and the gap between the tops of two adjacent third sub-blocking portions 331 is smaller than the gap between the bottoms of two adjacent third sub-blocking portions 331.
- the plurality of blocking units 33 partially cover the corresponding second sub-blocking portion 32, that is, the area of the orthographic projection of the plurality of blocking units 33 on the base substrate is smaller than that of the corresponding second sub-blocking portion 32 on the liner. The area of the orthographic projection on the base substrate.
- the cross-sectional shape of the third sub-blocking portion 331 is an inverted trapezoid.
- the bottom angle a3 of the third sub-blocking portion 331 may range from 40 degrees to 60 degrees.
- the barrier unit 33 may be located on the third barrier layer, and the third barrier layer may be manufactured by coating and UV lamp curing processes in sequence.
- the width of the third sub-blocking portion 331 is 7 ⁇ m, and the thickness of the third sub-blocking portion 331 is 1.5 ⁇ m.
- the material of the first sub-blocking portion 31 and the material of the second sub-blocking portion 32 are different, and the material of the third sub-blocking portion 331 is different from the material of the second sub-blocking portion 32.
- the materials are the same.
- the material of the first sub-blocking portion 31 is polyimide, and the materials of the second sub-blocking portion 32 and the third sub-blocking portion 331 are both photosensitive resin .
- the material of the second sub-blocking portion 32 includes, but is not limited to, oxyacrylate, polyester acrylate, polyether acrylate, and urethane acrylate.
- the blocking portion 30 in FIG. 9 includes four second sub-blocking portions 32 and four blocking units 33, and each second sub-blocking portion 32 corresponds to one blocking unit 33.
- the gap between the tops of two adjacent second sub-blocking portions 32 is smaller than the gap between the bottoms of two adjacent second sub-blocking portions 32.
- the blocking portion 30 in FIG. 10 includes six second sub-blocking portions 32 and six blocking units 33, and each second sub-blocking portion 32 corresponds to one blocking unit 33.
- the number of the second sub-blocking portion and the blocking unit is not limited to the situations listed above, and may also be other numbers.
- Each blocking unit 33 may also include more than two third sub-blocking parts. The number of blocking parts is not limited to the above number.
- the blocking portion of the present invention includes three sub-blocking portions, a plurality of the second sub-blocking portions partially cover the first sub-blocking portion, and a plurality of blocking units partially cover the corresponding second sub-blocking portions, adjacent to each other.
- the gap between the tops of the two third sub-barriers is smaller than the gap between the bottoms of two adjacent third sub-bars, so that the gap between the tops of the barriers of the present invention is smaller, and therefore the organic layer can be effectively prevented.
- the overflow improves the packaging effect and prolongs the service life of the display. In addition, it can better prevent water from intruding from the side and improve the luminous stability of the OLED.
- the present invention also provides a display module, which includes the above-mentioned display panel.
- the present invention also provides an electronic device, which includes the above-mentioned display module.
- the electronic device can be a mobile phone, a tablet computer, etc.
- the display panel, the display module, and the electronic device of the present invention include at least one blocking portion, the cross-sectional structure of the blocking portion includes: a first sub-blocking portion; at least one second sub-blocking portion, the second sub-blocking portion is provided On the first sub-blocking portion; a plurality of the second sub-blocking portions partially cover the first sub-blocking portion; at least one blocking unit, the blocking unit is provided on the second sub-blocking portion, so
- the blocking unit includes at least two third sub-blocking portions, and the blocking unit corresponds to the second sub-blocking portion; the blocking unit partially covers the corresponding second sub-blocking portion, and two adjacent third sub-blocking portions are adjacent to each other.
- the gap between the tops of the blocking parts is smaller than the gap between the bottoms of two adjacent third sub-blocking parts, so that the gap at the top of the blocking part of the present invention is small, and therefore the organic layer can be effectively prevented from overflowing.
- the packaging effect is improved and the service life of the display panel is prolonged.
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Abstract
一种显示面板、显示模组及电子装置，该显示面板包括：至少一阻挡部（30），阻挡部环绕在显示区域（101）外；阻挡部（30）的截面结构包括：第一子阻挡部（31）；至少一个第二子阻挡部（32），第二子阻挡部（32）设于第一子阻挡部（31）上；多个第二子阻挡部（32）部分覆盖第一子阻挡部（31）；至少一个阻挡单元（33），阻挡单元（33）设于第二子阻挡部（32）上，阻挡单元（33）包括至少两个第三子阻挡部（331），阻挡单元（33）与第二子阻挡部（32）对应；多个阻挡单元（33）部分覆盖对应的第二子阻挡部（32），相邻两个第三子阻挡部（331）的顶部之间的间隙小于相邻两个第三子阻挡部（331）的底部之间的间隙。显示面板、显示模组及电子装置，能够提高封装效果以及延长显示面板的使用寿命。
Description
本发明涉及显示技术领域，特别是涉及一种显示面板、显示模组及电子装置。
相比于传统的液晶显示面板，有机发光二极管显示面板（Organic Light-Emitting Diode,OLED）具有自发光、宽视角、高对比度、响应速率快以及轻薄可挠等诸多优点，因此被广泛地应用。然而，由于OLED对氧气、水非常敏感，当其渗透进入OLED器件后会影响寿命，因此，OLED显示面板需要设置封装结构进行封装，以隔绝水和氧。
基于可弯折，可折叠，可卷曲的趋势，封装方式多采用薄膜封装方式，而常见的薄膜封装方式为无机有机交替式，其中有机层常用喷墨印刷（Ink
Jet Printing，IJP）方式制作，但该方式制作过程中容易出现溢流（overflow）现象。因此需要在有机层外侧设置阻挡部（Dam）进行阻挡，常见的Dam结构的制作方式为涂布、曝光、显影。
但是现有的阻挡部的阻挡效果不佳，尤其对于粘性较低的有机材料，会造成较多的有机材料溢流，降低了封装效果以及缩短了显示面板的使用寿命。
本发明的目的在于提供一种显示面板、显示模组及电子装置，能够提高封装效果以及延长显示面板的使用寿命。
为解决上述技术问题，本发明提供一种显示面板，其包括：
至少一阻挡部，所述阻挡部环绕在显示区域外；所述阻挡部的截面结构包括：
第一子阻挡部；
至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；
至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；多个所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙。
本发明还提供一种显示模组，其包括上述显示面板。
本发明还提供一种电子装置，其包括上述显示模组。
本发明的显示面板、显示模组及电子装置，包括至少一阻挡部，所述阻挡部的截面结构包括：第一子阻挡部；至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙，从而使得本发明的阻挡部的顶部的间隙较小，因此可以有效地防止有机层外溢，提高了封装效果以及延长了显示面板的使用寿命。
图1为现有显示面板的结构示意图；
图2为现有显示面板的俯视图；
图3为现有阻挡部的第一种剖视图；
图4为现有阻挡部的第二种剖视图；
图5为现有阻挡部的第三种剖视图；
图6为现有阻挡部的第四种剖视图；
图7为本发明显示面板的俯视图；
图8为本发明阻挡部的第一种结构示意图；
图9为本发明阻挡部的第二种结构示意图；
图10为本发明阻挡部的第三种结构示意图。
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，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发明和简化描述，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发明的限制。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。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
如图1所示，现有的有机发光二极管显示面板包括衬底基板11、像素定义层12、有机发光层13、第一无机层14、有机层15以及第二无机层16。
衬底基板11包括玻璃基板、开关阵列层以及阳极。
像素定义层12包括两个间隔设置的像素定义单元121、第一阻挡部122以及第二阻挡部123，其中有机发光层14位于相邻两个所述像素定义单元121之间的间隙处。
第一无机层14设于所述像素定义层12以及第一阻挡部122和第二阻挡部123上。有机层15设于部分第一无机层14上，第二无机层16设于有机层15上。
如图2所示，在俯视角下，第一阻挡部122、第二阻挡部123均环绕在显示区域101外。
如图3所示，一实施方式中，第一阻挡部122的截面形状为正梯形，通常由涂布，曝光，显影，固化，蚀刻等工艺制作而成。通常第一阻挡部122的材料为聚酰亚胺（PI）或者掺杂有吸水性材料的聚酰亚胺。如图4所示，另一实施方式中，第一阻挡部122的截面形状也可为倒梯形，由于倒梯形的顶部的间隙较小，从而能够更好地防止有机层外溢，提高了封装效果。
如图5所示，一实施方式中，通常第二阻挡部123的材料为聚酰亚胺（PI）。第二阻挡部123的截面结构为两层结构，其包括第一子阻挡部21和第二子阻挡部22，第一子阻挡部21和第二子阻挡部22均通过涂布、曝光、显影、固化、蚀刻等工艺制作而成，制作过程中需进行两次曝光。或者通过涂布、曝光、显影工艺制作而成，配合掩膜(Halftone)工艺需进行一次曝光。如图6所示，另一实施方式中，第二子阻挡部22的数量为两个
结合图5和6，第一子阻挡部21和第二子阻挡部22的截面形状都为正梯形，由于图6中设置较多的第二子阻挡部22，从而能够更好防止有机层外溢。
请参照图7至9，图7为本发明显示面板的俯视图。
如图7所示，本发明的显示面板为有机发光二极管显示面板，其包括显示区域101和两个阻挡部30，每个所述阻挡部30环绕在显示区域外。
如图8所示，所述阻挡部30的截面结构包括：第一子阻挡部31和第二子阻挡部32以及两个阻挡单元33。
第一子阻挡部31可位于第一阻挡层。所述第一阻挡层的材料可为聚酰亚胺。在一实施方式中，第一子阻挡部31可以通过涂布、曝光、显影、固化以及蚀刻等工艺制作形成。其中所述第一子阻挡部31的截面形状为正梯形，该截面形状为纵截面形状。为了进一步防止有机层外溢，所述第一子阻挡部31的底角a1的范围为30度至50度。第一子阻挡部31的宽度可为40μm。所述第一子阻挡部31的厚度可为1.5um。
所述第二子阻挡部32可位于第二阻挡层，所述第二阻挡层可通过涂布、UV灯固化工艺制作而成。为了进一步防止有机层外溢，所述第二子阻挡部32的截面形状为倒梯形，其中所述第二子阻挡部32的底角a2的范围可为50度至70度。所述第二子阻挡部32的材料和所述第一子阻挡部31的材料不同。第二子阻挡部32部分覆盖（未完全）所述第一子阻挡部31，也即，第二子阻挡部32在显示面板的衬底基板上的正投影的面积小于第一子阻挡部31在衬底基板上的正投影的面积。在一实施方式中，所述第二子阻挡部32的宽度为16μm，所述第二子阻挡部32的厚度为1.5um。
所述阻挡单元33设于所述第二子阻挡部32上，所述第二子阻挡部32与所述阻挡单元33对应；比如在一实施方式中，每个所述第二子阻挡部32对应一个所述阻挡单元33。在一实施方式中，每个所述第二子阻挡部32对应至少两个所述阻挡单元33。所述阻挡单元33包括至少两个第三子阻挡部331，相邻两个第三子阻挡部331的顶部之间的间隙小于相邻两个第三子阻挡部331的底部之间的间隙。多个阻挡单元33部分覆盖对应的所述第二子阻挡部32，也即多个所述阻挡单元33在衬底基板上的正投影的面积小于对应的所述第二子阻挡部32在衬底基板上的正投影的面积。
在一实施方式中，为了进一步防止有机层外溢，所述第三子阻挡部331的截面形状为倒梯形。其中，所述第三子阻挡部331的底角a3的范围可为40度至60度。
所述阻挡单元33可位于第三阻挡层，所述第三阻挡层可依次通过涂布和UV灯固化工艺制作而成。
在一实施方式中，所述第三子阻挡部331的宽度为7μm，所述第三子阻挡部331的厚度为1.5um。
为了提高阻挡部的阻挡效果，所述第一子阻挡部31的材料和所述第二子阻挡部32的材料不同，所述第三子阻挡部331的材料与所述第二子阻挡部32的材料相同。为了防止水入侵，在一实施方式中，所述第一子阻挡部31的材料为聚酰亚胺，所述第二子阻挡部32和所述第三子阻挡部331的材料均为光敏树脂。其中所述第二子阻挡部32的材料包括但不限于氧丙烯酸酯、聚酯丙烯酸酯、聚醚丙烯酸酯、氨基甲酸酯丙烯酸酯。
如图9所示，图9中的阻挡部30包括4个第二子阻挡部32以及四个阻挡单元33，每个第二子阻挡部32对应一个阻挡单元33。其中为了进一步防止有机层外溢，相邻两个第二子阻挡部32的顶部之间的间隙小于相邻两个第二子阻挡部32的底部之间的间隙。
如图10所示，图10中的阻挡部30包括六个第二子阻挡部32以及六个阻挡单元33，每个第二子阻挡部32对应一个阻挡单元33。当然，可以理解的第二子阻挡部和阻挡单元的数量不限于以上所列举的情形，还可以为其他数量。每个阻挡单元33也可包括两个以上的第三子阻挡部。阻挡部的数量也不限于以上的数量。
由于本发明的阻挡部包括三个子阻挡部，且多个所述第二子阻挡部部分覆盖所述第一子阻挡部，多个阻挡单元部分覆盖对应的所述第二子阻挡部，相邻两个第三子阻挡部的顶部之间的间隙小于相邻两个第三子阻挡部的底部之间的间隙，从而使得本发明阻挡部的顶部的间隙较小，因此可以有效地防止有机层外溢，提高了封装效果，延长了显示器的使用寿命。此外还能更好地防止水从侧面入侵，提高OLED的发光稳定性。
本发明还提供一种显示模组，其包括上述显示面板。
本发明还提供一种电子装置，其包括上述显示模组。该电子装置可以为手机、平板电脑等设备。
本发明的显示面板、显示模组及电子装置，包括至少一阻挡部，所述阻挡部的截面结构包括：第一子阻挡部；至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙，从而使得本发明的阻挡部的顶部的间隙较小，因此可以有效地防止有机层外溢，提高了封装效果以及延长了显示面板的使用寿命。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种显示面板，其包括：至少一阻挡部，所述阻挡部环绕在显示区域外；所述阻挡部的截面结构包括：第一子阻挡部；至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；多个所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙。
- 根据权利要求1所述的显示面板，其中所述阻挡部包括至少两个第二子阻挡部，相邻两个所述第二子阻挡部的顶部之间的间隙小于相邻两个所述第二子阻挡部的底部之间的间隙。
- 根据权利要求2所述的显示面板，其中所述第二子阻挡部的截面形状为倒梯形。
- 根据权利要求3所述的显示面板，其中所述第二子阻挡部的底角范围为50度至70度。
- 根据权利要求1所述的显示面板，其中所述第三子阻挡部的截面形状为倒梯形。
- 根据权利要求5所述的显示面板，其中所述第三子阻挡部的底角范围为40度至60度。
- 根据权利要求1所述的显示面板，其中所述第一子阻挡部的材料和所述第二子阻挡部的材料不同，所述第三子阻挡部的材料与所述第二子阻挡部的材料相同。
- 根据权利要求7所述的显示面板，其中所述第一子阻挡部的材料为聚酰亚胺，所述第二子阻挡部的材料和所述第三子阻挡部的材料均为光敏树脂。
- 根据权利要求8所述的显示面板，其中所述第二子阻挡部的材料包括但不限于氧丙烯酸酯、聚酯丙烯酸酯、聚醚丙烯酸酯以及氨基甲酸酯丙烯酸酯。
- 根据权利要求1所述的显示面板，其中所述第一子阻挡部的截面形状为正梯形。
- 根据权利要求10所述的显示面板，其中所述第一子阻挡部的底角范围为30度至50度。
- 一种显示模组，其包括显示面板，其包括：至少一阻挡部，所述阻挡部环绕在显示区域外；所述阻挡部的截面结构包括：第一子阻挡部；至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；多个所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙。
- 根据权利要求12所述的显示模组，其中所述阻挡部包括至少两个第二子阻挡部，相邻两个所述第二子阻挡部的顶部之间的间隙小于相邻两个所述第二子阻挡部的底部之间的间隙。
- 根据权利要求13所述的显示模组，其中所述第二子阻挡部的截面形状为倒梯形。
- 根据权利要求14所述的显示模组，其中所述第二子阻挡部的底角范围为50度至70度。
- 根据权利要求12所述的显示模组，其中所述第三子阻挡部的截面形状为倒梯形。
- 根据权利要求16所述的显示模组，其中所述第三子阻挡部的底角范围为40度至60度。
- 根据权利要求12所述的显示模组，其中所述第一子阻挡部的材料和所述第二子阻挡部的材料不同，所述第三子阻挡部的材料与所述第二子阻挡部的材料相同。
- 根据权利要求18所述的显示模组，其中所述第一子阻挡部的材料为聚酰亚胺，所述第二子阻挡部的材料和所述第三子阻挡部的材料均为光敏树脂。
- 一种电子装置，其包括显示模组，其包括显示面板，其包括：至少一阻挡部，所述阻挡部环绕在显示区域外；所述阻挡部的截面结构包括：第一子阻挡部；至少一个第二子阻挡部，所述第二子阻挡部设于所述第一子阻挡部上；多个所述第二子阻挡部部分覆盖所述第一子阻挡部；至少一个阻挡单元，所述阻挡单元设于所述第二子阻挡部上，所述阻挡单元包括至少两个第三子阻挡部，所述阻挡单元与所述第二子阻挡部对应；多个所述阻挡单元部分覆盖对应的第二子阻挡部，相邻两个所述第三子阻挡部的顶部之间的间隙小于相邻两个所述第三子阻挡部的底部之间的间隙。
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| US20210242422A1 (en) | 2021-08-05 |
| CN110120462A (zh) | 2019-08-13 |
| US11251400B2 (en) | 2022-02-15 |
| CN110120462B (zh) | 2020-09-01 |
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