WO2020199306A1 - 显示面板和显示面板制作方法 - Google Patents
显示面板和显示面板制作方法 Download PDFInfo
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- WO2020199306A1 WO2020199306A1 PCT/CN2019/086220 CN2019086220W WO2020199306A1 WO 2020199306 A1 WO2020199306 A1 WO 2020199306A1 CN 2019086220 W CN2019086220 W CN 2019086220W WO 2020199306 A1 WO2020199306 A1 WO 2020199306A1
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- 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
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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
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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
- H10K59/1201—Manufacture or treatment
Definitions
- the present invention relates to the field of display, in particular to a display panel and a manufacturing method of the display panel.
- AMOLED Active matrix organic light-emitting diode
- FIG. 1 it is a typical AMOLED display panel structure in the prior art, and a segmented protective film structure is used for the actual bending area.
- the display panel includes a protective film layer (usually a backplane) 1, a flexible substrate layer 2 and an array layer 3 from bottom to top.
- the display panel is defined with a bending area 10 and a non-bending area 20.
- the protective film layer 1 of the bending area 10 is peeled off, leaving the flexible substrate layer 2 and the array layer 3, making the bending area 10 thinner. This also forms the first protective film layer 11 and the second protective film layer 12, respectively.
- the actual bending zone adopts a segmented protective film and a thinned substrate structure, that is, on the basis of the structure in Figure 1, the flexible liner corresponding to the protective film layer 1 of the bending zone 10 is peeled off.
- the bottom layer 2 is partially peeled off to form a groove 21.
- the display panel further includes a light-emitting layer 4 and a thin-film encapsulation layer 5 on the array layer 3 as shown in FIG. 3, which displays images toward the side of the thin-film encapsulation layer 5.
- the above method has a certain effect in reducing stress, but it is not conducive to maintaining the bending angle (R angle), and has low performance in preventing external stress interference.
- the bending angle is not ideal, and the bending angle is deformed inward, or the bending angle shifts to one side, causing cracks or fractures.
- the purpose of the present invention is to provide a display panel and a manufacturing method of the display panel, which can enhance the stability of the bending angle of the bending area, and avoid cracks or fractures caused by excessive local stress due to its deformation.
- an embodiment of the present invention provides a display panel, which defines a bending area and a non-bending area.
- the display panel includes a substrate layer, an array layer, and a light emitting layer from bottom to top.
- a first groove is provided on the side of the substrate layer in the bending area away from the array layer.
- the substrate layer includes a flexible substrate layer
- the first groove is recessed on the flexible substrate layer
- the substrate layer includes a protective film layer
- the first groove penetrates the protective film layer
- the material of the flexible substrate layer is polyimide.
- the substrate layer located in the bending area is further provided with second grooves distributed at equal intervals, and the extension direction of the second grooves is perpendicular to the extension direction of the first grooves.
- the step of preparing a substrate layer includes coating a polyimide solution, curing the film layer to form a flexible substrate layer, and the flexible substrate layer constitutes the substrate layer;
- the step of etching the substrate layer includes etching the substrate layer to form first grooves, the first grooves being equally spaced apart; cleaning the peeling residue in the first groove;
- Completing the display panel manufacturing step which includes stacking the array layer and the light emitting layer on the side of the flexible substrate layer away from the first groove in sequence; bending the flexible substrate layer toward the side of the first groove,
- the definition includes the first groove area as a bending area, and the definition includes the light-emitting layer area as a non-bending area.
- the step of making the substrate layer further includes the step of making a protective film layer, which is to make a protective film layer on one side of the flexible substrate layer, and etch the protective film layer by using a mask and laser irradiation.
- the diaphragm is in the form of a fence, which is provided with light-shielding areas and light-transmitting areas distributed at equal intervals.
- the step of etching the substrate layer further includes the step of cross-etching the protective film layer, which is to etch the substrate layer to form second grooves distributed at equal intervals, and the extension direction of the second groove is the same as that of the first groove.
- the extending direction of a groove is vertical.
- the advantage of the present invention is to provide a display panel and a manufacturing method of the display panel, which can enhance the stability of the bending angle of the bending area, and avoid cracks or fractures caused by excessive local stress due to its deformation.
- FIG. 1 is a schematic diagram of the structure of a display panel in the prior art
- FIG. 2 is a schematic diagram of the structure of FIG. 1 after the substrate is thinned
- Figure 3 is a schematic diagram of the structure of Figure 2 after bending
- FIG. 4 is a schematic structural diagram of a display panel in the first embodiment of the present invention.
- FIG. 5 is a top view of the bending area structure in FIG. 4 according to the present invention.
- FIG. 6 is a cross-sectional view of the bending zone structure in FIG. 4 according to the present invention.
- FIG. 7 is a schematic diagram of a display panel structure in the second embodiment of the present invention.
- FIG. 8 is a top view of the bending zone structure in FIG. 7 according to the present invention.
- FIG. 9 is a cross-sectional view of the bending zone structure in FIG. 7 according to the present invention.
- FIG. 10 is a schematic structural diagram of a display panel in the third embodiment of the present invention.
- FIG. 11 is a cross-sectional view of the structure of the bending zone in FIG. 10 according to the present invention.
- FIG. 12 is a top view of a structure of a bending area of a display panel in a fourth embodiment of the present invention.
- FIG. 13 is a manufacturing flow chart of a display panel in the first embodiment of the present invention.
- FIG. 14 is a manufacturing flow chart of a display panel in the second embodiment or the third embodiment of the present invention.
- FIG. 15 is a manufacturing flow chart of a display panel in the fourth embodiment 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.
- an embodiment of the present invention provides a display panel that defines a bending area 10 and a non-bending area 20.
- the display panel includes a substrate layer 6 and an array layer from bottom to top. 3 and the light-emitting layer 4, wherein a first groove 61 is provided on the side of the substrate layer 6 located in the bending area 10 away from the array layer 3.
- the substrate layer 6 includes a flexible substrate layer 2, and the first groove 61 is recessed on the flexible substrate layer 2.
- the material of the flexible substrate layer 2 is preferably polyimide.
- FIG. 5 is a top view of the structure of the bending area in the display panel provided in the first embodiment.
- the width of the first groove 61 is L
- R1 is the radius from the center of the bending zone to the bottom of the first groove after bending
- R1 is the expected design value after bending
- R2 is the adjacent substrate after bending in the bending zone.
- the unit blocks of layer 6 form an equivalent circle radius
- H is the depth of the first groove
- the bending area is designed with n grooves, and there are n-1 substrates
- the width of the first groove is L
- FIG. 6 is a cross-sectional view of the structure of the bending area in the display panel provided in the first embodiment.
- the distance between two adjacent first grooves 61 is the width S of the substrate layer 6 in the bending area 10.
- the substrate layer 6 further includes a protective film layer 1 under the flexible substrate layer 2.
- the first groove 61 extends to the protective film layer 1, that is, the first groove 61 penetrates The protective film layer 1.
- the protective film layer 1 is preferably a backplane.
- FIG. 8 is a top view of the structure of the bending area in the display panel provided in the second embodiment.
- FIG. 9 is a cross-sectional view of the structure of the bending area in the display panel provided in the second embodiment.
- the distance between two adjacent first grooves 61 is the width S of the substrate layer 6 in the bending area 10.
- FIG. 10 is a display panel provided in the third embodiment of the present invention.
- the flexible substrate layer 2 includes the first ⁇ 61 ⁇ Groove 61. That is, the first groove 61 penetrates the protective film layer 1 and is located on the flexible substrate layer 2.
- the depth H of the first groove 61 is the sum of the thickness of the protective film layer 1 and the depth of the groove on the flexible substrate layer 2.
- FIG. 11 is a cross-sectional view of the structure of the bending area in the display panel provided in the third embodiment, which is the substrate layer 6 after being thinned.
- the distance between two adjacent first grooves 61 is the width S of the substrate layer 6 in the bending area 10.
- FIG. 12 is a top view of a structure of a bending area of a display panel according to a fourth embodiment of the present invention, including all the above technical solutions.
- the substrate layer 6 located in the bending area 10 is also There are second grooves 62 distributed at equal intervals, and the extending direction of the second grooves 62 is perpendicular to the extending direction of the first groove 61.
- the depth of the second groove 62 is the same as the depth of the first groove 61, and the difference between the two is only in the extension direction.
- another embodiment of the present invention provides a manufacturing method of any one of the above-mentioned display panels, including the steps:
- S1 a step of preparing a substrate layer, which is to coat a polyimide solution, and cure the film layer to form a flexible substrate layer 2, and the flexible substrate layer 2 constitutes a substrate layer 6;
- the step of etching the substrate layer which is to etch the substrate layer 6 to form the first grooves 61, the first grooves 61 are equally spaced apart; cleaning the peeling residue in the first grooves 61;
- the step of preparing the substrate layer in S1 also includes the step of preparing a protective film layer in S11, which is to fabricate the protective film layer 1 on the side of the flexible substrate layer 2, using a mask and laser irradiation to etch the
- the protective film layer 1 the mask is in the form of a fence, and it is provided with a light-shielding area and a light-transmitting area distributed at equal intervals.
- the first groove 61 can also etch the flexible substrate layer 2, that is, two different structures can be formed by different etching depths of the first groove 61.
- the step of etching the substrate layer in S2 also includes the step of cross-etching the protective film in S21, which is to etch the substrate layer 6 to form second grooves 62 distributed at equal intervals.
- the extending direction of 62 is perpendicular to the extending direction of the first groove 61.
- the advantage of the present invention is to provide a display panel and a manufacturing method of the display panel, which can enhance the stability of the bending angle of the bending area, and avoid cracks or fractures caused by excessive local stress due to its deformation.
- the display panel can be used in a single-sided display or a double-sided display device.
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Abstract
一种显示面板和显示面板制作方法。显示面板定义有弯折区(10)和非弯折区(20),显示面板从下至上依次包括基板层(6)、阵列层(3)和发光层(4),其中,位于弯折区(10)的基板层(6)上远离阵列层(3)一侧设有第一凹槽(61)。显示面板制作方法包括:制作基板层步骤(S1)、蚀刻基板层步骤(S2)和完成显示面板制作步骤(S3)。第一凹槽(61)的设置可增强弯折区(10)的弯折角稳定性,避免因为形变而导致局部应力过大而产生裂纹或断裂。
Description
本发明涉及显示领域,尤其涉及一种显示面板和显示面板制作方法。
有源矩阵有机发光二极体(AMOLED)显示技术,对比传统的其他的显示技术,具有轻薄、高对比度、低响应时间、色彩高饱和等一系列有点,其中可弯折特性是其最突出的优点之一。
如图1所示,为现有技术一种典型的AMOLED显示面板结构,为实际产生中弯折区采用分段式保护膜结构。显示面板从下至上依次包括保护膜层(通常为背板)1、柔性衬底层2和阵列层3。显示面板定义有弯折区10和非弯折区20,为便于弯折,将弯折区10的保护膜层1剥离,保留柔性衬底层2和阵列层3,使得弯折区10更薄,由此也分别形成第一保护膜层11和第二保护膜层12。
如图2所示,实际产生中弯折区采用分段式保护膜和基板薄化的结构,即为在图1结构基础上将与弯折区10的保护膜层1剥离相对应的柔性衬底层2部分剥离形成一凹槽21。
如图3所示,为图2弯折后形成的理想状态下弯折角,通过在弯折区3进行弯折,其弯折角度根据实际需求而定,一般使弯折角呈对称平滑弯曲。具体的,显示面板如图3所示的阵列层3上还包括发光层4和薄膜封装层5,其朝薄膜封装层5一侧显示画面。
发明概述
以上方式在减少应力方面有一定作用,但是不利于弯折角(R角)保持,对防止外界应力干扰的性能较低。实际上,因为弯折制程能力不足、外力干扰等影响,导致弯折角并非理想状态,会出现弯折角向内形变,或弯折角向一边偏移,进而造成产生裂纹或断裂。
问题的解决方案
本发明的目的在于,提供一种显示面板和显示面板制作方法,可增强弯折区的弯折角稳定性,避免因为其形变而导致局部应力过大而产生裂纹或断裂。
为了解决上述问题,本发明一实施例中提供一种显示面板,定义有弯折区和非弯折区,所述显示面板从下至上依次包括基板层、阵列层和发光层,其中位于所述弯折区的所述基板层上远离所述阵列层一侧设有第一凹槽。
进一步的,其中所述基板层包括柔性衬底层,所述第一凹槽凹陷设于所述柔性衬底层上。
进一步的,其中所述第一凹槽的宽度L为L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数。
进一步的,其中所述的显示面板包括至少两个所述第一凹槽,相邻两个所述第一凹槽之间的距离S为S=π×(R1-H)÷n,其中R1为弯折区弯折后圆心至第一凹槽槽底的半径,H为第一凹槽的深度,n为第一凹槽的个数。
进一步的,其中所述基板层包括保护膜层,所述第一凹槽贯穿所述保护膜层。
进一步的,其中所述柔性衬底层的材料为聚酰亚胺。
进一步的,其中位于所述弯折区的所述基板层上还设有等距离间隔分布的第二凹槽,所述第二凹槽的延伸方向与所述第一凹槽的延伸方向垂直。
本发明又一实施例中提供上述任一项所述的显示面板的制作方法,包括步骤:
制作基板层步骤,其为涂布聚酰亚胺溶液,固化膜层形成柔性衬底层,所述柔性衬底层构成基板层;
蚀刻基板层步骤,其为蚀刻基板层形成第一凹槽,所述第一凹槽等距离间隔分布;对第一凹槽内的剥离残留物进行清洁处理;
完成显示面板制作步骤,其为在所述柔性衬底层远离所述第一凹槽一侧依次层叠制作阵列层和发光层;对所述柔性衬底层朝向所述第一凹槽一侧弯折,定义包括所述第一凹槽区域为弯折区,定义包括所述发光层区域为非弯折区。
进一步的,其中所述制作基板层步骤还包括制作保护膜层步骤,其为在所述柔性衬底层一侧制作保护膜层,利用掩膜板及激光照射蚀刻所述保护膜层,所述掩膜板呈栅栏型,其设有等距离间隔分布的遮光区和透光区,所述遮光区的宽 度L为L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数;经蚀刻后的所述保护膜层形成第一凹槽,所述第一凹槽贯穿所述保护膜层。
进一步的,其中所述蚀刻基板层步骤还包括交叉蚀刻保护膜层步骤,其为蚀刻所述基板层形成等距离间隔分布的第二凹槽,所述第二凹槽的延伸方向与所述第一凹槽的延伸方向垂直。
发明的有益效果
本发明的优点在于,提供一种显示面板和显示面板制作方法,可增强弯折区的弯折角稳定性,避免因为其形变而导致局部应力过大而产生裂纹或断裂。
对附图的简要说明
图1为现有技术一种显示面板结构示意图;
图2为图1进行基板薄化后的结构示意图;
图3为图2进行弯折后的结构示意图;
图4为本发明第一实施例中的一种显示面板结构示意图;
图5为本发明为图4中的弯折区结构俯视图;
图6为本发明为图4中的弯折区结构截面图;
图7为本发明第二实施例中的一种显示面板结构示意图;
图8为本发明为图7中的弯折区结构俯视图;
图9为本发明为图7中的弯折区结构截面图;
图10为本发明第三实施例中的一种显示面板结构示意图;
图11为本发明为图10中的弯折区结构截面图;
图12为本发明第四实施例中的一种显示面板弯折区结构俯视图;
图13为本发明第一实施例中的一种显示面板的制作流程图;
图14为本发明第二实施例或第三实施例中的一种显示面板的制作流程图;
图15为本发明第四实施例中的一种显示面板的制作流程图。
图中部件标识如下:
1、保护膜层,2、柔性衬底层,3、阵列层,4、发光层,
5、薄膜封装层,6、基板层,10、弯折区,20、非弯折区,
11、第一保护膜层,12、第二保护膜层,21、凹槽,
61、第一凹槽,62、第二凹槽。
发明实施例
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。
此外,还应注意的是,在一些可替代的实现方式中,本文中所描述的所有方法的步骤可不按顺序发生。例如,示出为连续的两个步骤可实际上大致同时执行,或者这两个步骤可有时以相反的顺序执行。
请参阅图4~图12所示,本发明一实施例中提供一种显示面板,定义有弯折区10和非弯折区20,所述显示面板从下至上依次包括基板层6、阵列层3和发光层4,其中,位于所述弯折区10的所述基板层6上远离所述阵列层3一侧设有第一凹槽61。
请参阅图4所示,为本发明实施例一提供的一种显示面板。其中,所述基板层6包括柔性衬底层2,所述第一凹槽61凹陷设于所述柔性衬底层2上。所述柔性衬底层2的材料优选为聚酰亚胺。
请参阅图5所示,为实施例一提供的一种显示面板中的弯折区结构俯视图。所述第一凹槽61的宽度为L,将基板层6划分为多个单元块,即为相邻基板层6的单元块之间距离,所述第一凹槽61的宽度L为L=π×H÷n,其中H为第一凹槽的深度 ,n为第一凹槽的个数。
具体的,请参阅图4所示,R1为弯折区弯折后圆心至第一凹槽槽底的半径,R1为弯折后期望的设计值,R2为弯折区弯折后相邻基板层6的单元块形成等效圆半径,H为第一凹槽的深度,故近似计算R2=R1-H(公式1);设弯折区设计n条凹槽,既有n-1个基板层6的单元块,第一凹槽宽度为L,基板层6的单元块宽度为S,则需满足n×L+(n-1)×S=Pπ×R1(公式2);当n较大时,公式2近为n×(L+S)=π×R1(公式3);若弯折区弯折后基板层6形成内圆,并且相邻单元快形成支撑结构,则需满足θ=(S+L)/2πR1×360°=S/2πR2×360°,化简整理后为S×(R1-R2)=L×R2,代入公式1得:S×H=L×R2(公式4);将公式4代入公式3得:S=π×(R1-H)/n,L=π×H/n。
请参阅图6所示,为实施例一提供的一种显示面板中的弯折区结构截面图。其中,所述的显示面板包括至少两个所述第一凹槽61,相邻两个所述第一凹槽61之间的距离S为S=π×(R1-H)÷n,其中R1为弯折区弯折后圆心至第一凹槽槽底的半径,H为第一凹槽的深度,n为第一凹槽的个数。相邻两个所述第一凹槽61间隔距离即为位于所述弯折区10的所述基板层6的宽度S。
请参阅图7所示,为本发明实施例二提供的一种显示面板。其中,所述基板层6还包括位于所述柔性衬底层2下的保护膜层1,此时所述第一凹槽61延伸至所述保护膜层1,即所述第一凹槽61贯穿所述保护膜层1。在本实施例中,所述保护膜层1优选为背板。
请参阅图8所示,为实施例二提供的一种显示面板中的弯折区结构俯视图。所述第一凹槽61的宽度L为L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数,即为相邻基板层6之间距离。
请参阅图9所示,为实施例二提供的一种显示面板中的弯折区结构截面图。其中,所述的显示面板包括至少两个所述第一凹槽61,相邻两个所述第一凹槽61之间的距离S为S=π×(R1-H)÷n,其中R1为弯折区弯折后圆心至第一凹槽槽底的半径,H为第一凹槽的深度,n为第一凹槽的个数。相邻两个所述第一凹槽61间隔距离即为位于所述弯折区10的所述基板层6的宽度S。
请参阅图10所示,为本发明实施例三提供的一种显示面板,其与本发明实施例 二提供的一种显示面板不同之处在于,所述柔性衬底层2上包括所述第一凹槽61。即所述第一凹槽61贯穿所述保护膜层1且位于所述柔性衬底层2上。所述第一凹槽61的深度H为所述保护膜层1厚度和所述柔性衬底层2上的槽深度之和。
请参阅图11所示,为实施例三提供的一种显示面板中的弯折区结构截面图,为薄化后的基板层6。其中,所述的显示面板包括至少两个所述第一凹槽61,相邻两个所述第一凹槽61之间的距离S为S=π×(R1-H)÷n,其中R1为弯折区弯折后圆心至第一凹槽槽底的半径,H为第一凹槽的深度,n为第一凹槽的个数。相邻两个所述第一凹槽61间隔距离即为位于所述弯折区10的所述基板层6的宽度S。
请参阅图12所示,为本发明实施例四提供的一种显示面板弯折区结构俯视图,包括上述所有技术方案,其区别在于,位于所述弯折区10的所述基板层6上还设有等距离间隔分布的第二凹槽62,所述第二凹槽62的延伸方向与所述第一凹槽61的延伸方向垂直。优选的,所述第二凹槽62的深度与所述第一凹槽61的深度相同,其两者区别仅在于延伸方向不同。
请参阅图13所示,本发明又一实施例中提供上述任一项所述的显示面板的制作方法,包括步骤:
S1、制作基板层步骤,其为涂布聚酰亚胺溶液,固化膜层形成柔性衬底层2,所述柔性衬底层2构成基板层6;
S2、蚀刻基板层步骤,其为蚀刻基板层6形成第一凹槽61,所述第一凹槽61等距离间隔分布;对第一凹槽61内的剥离残留物进行清洁处理;
S3、完成显示面板制作步骤,其为在所述柔性衬底层2远离所述第一凹槽61一侧依次层叠制作阵列层3和发光层4;对所述所述柔性衬底层2朝向所述第一凹槽61一侧弯折,定义包括所述第一凹槽61区域为弯折区10,定义包括所述发光层4区域为非弯折区20。
请参阅图14所示,所述S1制作基板层步骤还包括S11制作保护膜层步骤,其为在所述柔性衬底层2一侧制作保护膜层1,利用掩膜板及激光照射蚀刻所述保护膜层1,所述掩膜板呈栅栏型,其设有等距离间隔分布的遮光区和透光区,所述遮光区的宽度为L,L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数;经蚀刻后的所述保护膜层1形成第一凹槽61,所述第一凹槽61贯穿所述保护膜层 1。其中所述第一凹槽61还可以蚀刻所述柔性衬底层2,即所述第一凹槽61的蚀刻深度不同可形成两种不同的结构。
请参阅图15所示,所述S2蚀刻基板层步骤还包括S21交叉蚀刻保护膜层步骤,其为蚀刻所述基板层6形成等距离间隔分布的第二凹槽62,所述第二凹槽62的延伸方向与所述第一凹槽61的延伸方向垂直。
本发明的优点在于,提供一种显示面板和显示面板制作方法,可增强弯折区的弯折角稳定性,避免因为其形变而导致局部应力过大而产生裂纹或断裂。显示面板可用于单面显示或双面显示设备中。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (11)
- 一种显示面板,定义有弯折区和非弯折区,所述显示面板从下至上依次包括基板层、阵列层和发光层,其中位于所述弯折区的所述基板层上远离所述阵列层一侧设有第一凹槽。
- 根据权利要求1所述的显示面板,其中所述基板层包括柔性衬底层,所述第一凹槽凹陷设于所述柔性衬底层上。
- 根据权利要求1所述的显示面板,其中所述第一凹槽的宽度L为L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数。
- 根据权利要求1所述的显示面板,其中包括至少两个所述第一凹槽,相邻两个所述第一凹槽之间的距离S为S=π×(R1-H)÷n,其中R1为弯折区弯折后圆心至第一凹槽槽底的半径,H为第一凹槽的深度,n为第一凹槽的个数。
- 根据权利要求1所述的显示面板,其中所述基板层包括保护膜层,所述第一凹槽贯穿所述保护膜层。
- 根据权利要求2所述的显示面板,其中所述基板层包括保护膜层,所述第一凹槽贯穿所述保护膜层。
- 根据权利要求2所述的显示面板,其中所述柔性衬底层的材料为聚酰亚胺。
- 根据权利要求1所述的显示面板,其中位于所述弯折区的所述基板层上还设有等距离间隔分布的第二凹槽,所述第二凹槽的延伸方向与所述第一凹槽的延伸方向垂直。
- 一种如权利要求1所述的显示面板的制作方法,其中包括步骤:制作基板层步骤,其为涂布聚酰亚胺溶液,固化膜层形成柔性衬底层,所述柔性衬底层构成基板层;蚀刻基板层步骤,其为蚀刻基板层形成第一凹槽,所述第一凹槽等距离间隔分布;对第一凹槽内的剥离残留物进行清洁处理;完成显示面板制作步骤,其为在所述柔性衬底层远离所述第一凹槽一侧依次层叠制作阵列层和发光层;对所述柔性衬底层朝向所 述第一凹槽一侧弯折,定义包括所述第一凹槽区域为弯折区,定义包括所述发光层区域为非弯折区。
- 一种如权利要求8所述的显示面板的制作方法,其中所述制作基板层步骤还包括制作保护膜层步骤,其为在所述柔性衬底层一侧制作保护膜层,利用掩膜板及激光照射蚀刻所述保护膜层,所述掩膜板呈栅栏型,其设有等距离间隔分布的遮光区和透光区,所述遮光区的宽度为L,L=π×H÷n,其中H为第一凹槽的深度,n为第一凹槽的个数;经蚀刻后的所述保护膜层形成第一凹槽,所述第一凹槽贯穿所述保护膜层。
- 一种如权利要求8所述的显示面板的制作方法,其中所述蚀刻基板层步骤还包括交叉蚀刻保护膜层步骤,其为蚀刻所述基板层形成等距离间隔分布的第二凹槽,所述第二凹槽的延伸方向与所述第一凹槽的延伸方向垂直。
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| CN105977398A (zh) * | 2016-07-08 | 2016-09-28 | 京东方科技集团股份有限公司 | 一种封装盖板及其制备方法、显示装置 |
| CN107742639A (zh) * | 2017-11-27 | 2018-02-27 | 深圳市华星光电技术有限公司 | 柔性oled显示面板及显示装置 |
| CN108155218A (zh) * | 2017-12-29 | 2018-06-12 | 云谷(固安)科技有限公司 | 柔性显示屏 |
| CN109411623A (zh) * | 2018-09-30 | 2019-03-01 | 云谷(固安)科技有限公司 | 一种显示面板 |
| CN109360845A (zh) * | 2018-10-24 | 2019-02-19 | 京东方科技集团股份有限公司 | 显示基板及其制备方法、显示器件及其制备方法、显示装置 |
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| CN114170901A (zh) * | 2021-11-30 | 2022-03-11 | 湖北长江新型显示产业创新中心有限公司 | 一种显示面板及显示装置 |
| CN114170901B (zh) * | 2021-11-30 | 2024-04-16 | 湖北长江新型显示产业创新中心有限公司 | 一种显示面板及显示装置 |
| CN114694512A (zh) * | 2022-04-25 | 2022-07-01 | 武汉华星光电半导体显示技术有限公司 | 显示模组和显示装置 |
| CN115148781A (zh) * | 2022-08-04 | 2022-10-04 | 安徽繁盛显示科技有限公司 | 基于超薄玻璃的oled面板以及制造方法 |
| CN115376412A (zh) * | 2022-08-25 | 2022-11-22 | 京东方科技集团股份有限公司 | 一种显示面板、显示装置 |
| CN115376412B (zh) * | 2022-08-25 | 2023-11-24 | 京东方科技集团股份有限公司 | 一种显示面板、显示装置 |
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| Publication number | Publication date |
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| CN110047881A (zh) | 2019-07-23 |
| CN110047881B (zh) | 2021-03-16 |
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