WO2017118118A1 - 胶带及其制作方法、显示装置 - Google Patents

胶带及其制作方法、显示装置 Download PDF

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Publication number
WO2017118118A1
WO2017118118A1 PCT/CN2016/100667 CN2016100667W WO2017118118A1 WO 2017118118 A1 WO2017118118 A1 WO 2017118118A1 CN 2016100667 W CN2016100667 W CN 2016100667W WO 2017118118 A1 WO2017118118 A1 WO 2017118118A1
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WO
WIPO (PCT)
Prior art keywords
release film
layer
adhesive
adhesive layer
tape according
Prior art date
Application number
PCT/CN2016/100667
Other languages
English (en)
French (fr)
Inventor
尹清平
孙海威
赵婷婷
张财政
王雪绒
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/522,513 priority Critical patent/US20180107047A1/en
Publication of WO2017118118A1 publication Critical patent/WO2017118118A1/zh

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    • 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
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
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    • G02B6/0091—Positioning aspects of the light source relative to the light guide
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
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Definitions

  • Embodiments of the present disclosure relate to an adhesive tape, a method of fabricating the same, and a display device.
  • the display device includes a display panel and a backlight module.
  • the display panel is bonded to the plastic frame of the backlight module through a tape. Since the plastic frame is usually formed by cutting, the height difference between the different positions of the plastic frame is made. A large part of the plastic frame cannot be in contact with the tape, resulting in a small contact area between the adhesive layer and the plastic frame in the adhesive tape, and a small adhesive force between the adhesive layer and the plastic frame, making the display panel easy to The backlight module is separated.
  • Embodiments of the present disclosure provide an adhesive tape, a method of manufacturing the same, and a display device.
  • an adhesive tape is provided.
  • the tape comprises a first release film, a first adhesive layer, a substrate layer, a second adhesive layer and a second release film, which are disposed in a stack, the first release film facing one side of the first adhesive layer A plurality of dimples are disposed thereon, and the first bonding layer includes a plurality of first protrusions embedded in the plurality of the dimples.
  • the embodiment of the present disclosure further includes a display device including a backlight module and a display panel, the backlight module includes a surface-corroded plastic frame, and the plastic frame of the backlight module and the first of the tapes The bonding layer is bonded, and a peripheral portion of the display panel is bonded to the second bonding layer in the above tape.
  • Embodiments of the present disclosure also provide a method of manufacturing an adhesive tape, including:
  • the mold bottom is provided with a plurality of second protrusions, and the plurality of the second protrusions are respectively matched with the plurality of the pits;
  • the second release film is covered on the second bonding layer.
  • Figure 1 is a schematic cross-sectional view of a display device
  • FIG. 2 is a schematic cross-sectional view of an adhesive tape in an embodiment of the present disclosure
  • FIG. 3 is a schematic view of a side of a first release film facing a first adhesive layer in an embodiment of the present disclosure
  • FIG. 4 is a schematic cross-sectional view of a display device in an embodiment of the present disclosure.
  • Figure 5 is a plan view showing the first first protrusion in the embodiment of the present disclosure.
  • Figure 6 is a schematic cross-sectional view showing a second first protrusion in the embodiment of the present disclosure.
  • Figure 7 is a schematic cross-sectional view showing a third first protrusion in the embodiment of the present disclosure.
  • FIG. 8 is a schematic view showing a process of performing adhesion test on a first adhesive layer in an embodiment of the present disclosure
  • FIG. 9 is a flow chart of a method of manufacturing an adhesive tape in an embodiment of the present disclosure.
  • one way to reduce the height difference at different positions of the plastic frame is to perform surface etching treatment (VDI) on the plastic frame to increase the bonding area between the bonding layer and the plastic frame.
  • VDI surface etching treatment
  • the adhesion between the layer and the plastic frame but the inventors of the present application found that, as shown in FIG. 1, the surface of the plastic frame 1' after the surface etching treatment is still uneven, and the bonding layer cannot be combined with the plastic frame 1'.
  • the contact between the concave positions causes the bonding force between the bonding layer 2' and the plastic frame 1' to still meet the demand, so that the bonding of the display panel 3' to the backlight module is still not strong enough.
  • the tape 1 includes a first release film 11 laminated, a first adhesive layer 12, a substrate layer 13, a second adhesive layer 14, and The second release film 15.
  • the first release film 11 is provided with a plurality of dimples 111 on one side of the first adhesive layer 12, and the first adhesive layer 12 includes a plurality of first projections 121 embedded in the plurality of dimples 111.
  • the tape 1 provided by the embodiment of the present disclosure has a structure as described above such that after the first release film 11 is peeled off, the first adhesive layer 12 has a plurality of first protrusions 121 thereon.
  • Using the tape 1 will backlight
  • the module and the display panel are bonded, as shown in FIG. 4, the second adhesive layer 14 in the adhesive tape 1 is bonded to the display panel 2, and the first adhesive layer 12 and the surface-etched adhesive in the backlight module are The frame 3 is bonded, wherein each of the first protrusions 121 on the first adhesive layer 12 can be in contact with the concave position of the plastic frame 3, thereby effectively increasing the contact area between the plastic frame 3 and the first adhesive layer 12.
  • the adhesion between the plastic frame 3 and the first bonding layer 12 is improved, and the display panel 2 and the backlight module are more firmly bonded. Since the adhesive in the first adhesive layer 12 has a certain fluidity, even if the plurality of first protrusions 121 on the first adhesive layer 12 and the concave positions on the plastic frame 3 are not matched one by one, Under the action of the pressure applied during the operation, the plurality of first protrusions 121 are also in contact with the concave position of the plastic frame 3, thereby increasing the contact area between the plastic frame 3 and the first adhesive layer 12.
  • the structures of the second adhesive layer 14 and the second release film 15 are not limited, and those skilled in the art can select according to actual needs. Since the first adhesive layer 12 is used for bonding with the plastic frame 3 in the backlight module during use of the adhesive tape 1, the second adhesive layer 14 is used for bonding with the display panel 2, that is, the second adhesive layer.
  • the junction layer 14 is adhered to a glass substrate having a very flat surface in the display panel 2, and therefore, in the embodiment of the present disclosure, for example, as shown in FIG.
  • the second release film 15 faces one side of the second adhesive layer 14 Plane such that the second bonding layer 14 faces the side of the second release film 15 to be planar, thereby enabling the contact area between the second bonding layer 14 and the display panel 2 to be large, so that the display panel 2 and the second The adhesion between the bonding layers 14 is large.
  • the inventors of the present application have also found that when the backlight module and the display panel are bonded by using the tape in the prior art, the adhesive layer in the tape undergoes a large lateral deformation and wrinkles when heated, which is further reduced.
  • the first release film 11 faces the side of the first adhesive layer 12.
  • the first release film 11 and the second release film 15 in the embodiment of the present disclosure are both a polyester film, such as a PET (polyethylene terephthalate) film, to make the first release film.
  • the film 11 and the second release film 15 have excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature resistance and low temperature, chemical resistance, oil resistance, air tightness and good aroma retention.
  • the adhesives in the first adhesive layer 12 and the second adhesive layer 14 are all acrylic adhesives to make the first adhesive
  • the layer 12 and the second bonding layer 14 have high strength, good impact resistance, weather resistance, oil surface bonding, convenient use, impact resistance and strong shearing force.
  • the substrate layer 13 is a polyester film excellent in mechanical properties. It should be noted that the materials of the first release film 11, the first adhesive layer 12, the substrate layer 13, the second adhesive layer 14, and the second release film 15 are not limited thereto, and those skilled in the art can Make a choice.
  • the thickness of the tape 1 is too small, the adhesive in the first adhesive layer 12 and the second adhesive layer 14 in the adhesive tape 1 is too small, and the first adhesive layer 12 and the backlight module are The adhesive force between the plastic frame 3 or the second adhesive layer 14 and the display panel 2 is too small, so that the backlight module and the display panel 2 are easily separated. If the thickness of the adhesive tape 1 is too large, the display device may be caused. If the thickness is too large, it is disadvantageous for the thinning of the display device, and therefore, it is necessary to appropriately set the thickness of the tape 1.
  • the thickness of the tape 1 in the embodiment of the present disclosure is 0.03 mm to 0.1 mm.
  • a plurality of dimples 111 having the same shape are disposed on one side of the first release film 11 toward the first adhesive layer 12, so that the first The production method of the release film 11 is simple.
  • the recessed positions on the plastic frame 3 usually have different sizes, and in order to further increase the contact area between the first adhesive layer 12 and the plastic frame 3,
  • the first release film 11 is provided with a plurality of dimples 111 having the same shape and having at least two different sizes on one side of the first release layer 12, in which case the first adhesive layer 12 is embedded in the above
  • the plurality of first protrusions 121 of the plurality of dimples 111 also have at least two different sizes such that the first protrusions 121 on the first bonding layer 12 can better contact the depressed positions on the bezel 3 .
  • the plurality of dimples 111 provided on the one side of the first release film 11 toward the first adhesive layer 12 in the embodiment of the present disclosure may also have different shapes.
  • the plurality of pits 111 on the one side of the first release film 11 facing the first adhesive layer 12 in the embodiment of the present disclosure may be regularly distributed or irregularly distributed.
  • the first release film 11 is irregularly distributed toward the plurality of pits 111 on one side of the first adhesive layer 12 such that the first release film 11 faces the first adhesive layer 12.
  • the one side has a large roughness, so that the first bonding layer 12 and the plastic frame 3 in the backlight module have a larger contact area.
  • the first release film 11 in the embodiment of the present disclosure faces the one side of the first adhesive layer 12.
  • the shape of the pit 111 is a shape similar to an octopus sucker as shown in Fig. 5, or a hemispherical shape as shown in Fig. 6, or a conical shape as shown in Fig. 7.
  • the shape of the dimples 111 on the one side of the first release film 11 facing the first adhesive layer 12 is not limited to the above, and may be other shapes.
  • the diameter of the opening of the dimple 111 may be 5 ⁇ m to 10 ⁇ m, and the depth of the dimple 111 may be 5 ⁇ m to 10 ⁇ m, so that the size of the dimple 111 is on the surface of the plastic frame 3 subjected to surface etching treatment.
  • the size of the recessed position is adapted to further increase the contact area between the first adhesive layer 12 and the bezel 3.
  • the diameter of the opening of the pit 111 is 5 ⁇ m to 10 ⁇ m
  • the distance between the axes of symmetry of the adjacent two pits 111 may be 10 ⁇ m to 15 ⁇ m so that there is a gap between the adjacent two pits 111.
  • the bonding layer in the prior art tape and the present disclosure are obtained by the manner as shown in FIG.
  • the adhesion of the first bonding layer 12 in the adhesive tape 1 in the embodiment was tested, wherein the difference between the prior art tape and the tape 1 in the embodiment of the present disclosure is in the tape 1 in the disclosed embodiment.
  • the first release film 11 has a plurality of dimples 111
  • the first adhesive layer 12 includes a plurality of first protrusions 121 respectively embedded in the plurality of dimples 111, the plurality of dimples 111 being in the shape of a hemisphere
  • the shape has a depth of 5 ⁇ m to 10 ⁇ m per pit, and the opening of each of the pits 111 has a diameter of 5 ⁇ m to 10 ⁇ m.
  • the adhesion between the first bonding layer 12 in the adhesive tape 1 and the plastic frame 3 in the backlight module is significantly improved compared with the prior art tape. .
  • the embodiment of the present disclosure further provides a display device.
  • the display device includes a backlight module and a display panel 2 .
  • the backlight module includes a plastic frame 3 after surface etching treatment, wherein the backlight module is The frame 3 is bonded to the first bonding layer 12 in the tape 1 described above, and the peripheral portion of the display panel 2 is bonded to the second bonding layer 14 in the tape 1 described above.
  • the display device provided by the embodiment of the present disclosure has the structure as described above, thereby making the first Each of the first protrusions 121 on the adhesive layer 12 can be in contact with the concave position of the surface-treated plastic frame 3 in the backlight module, thereby effectively increasing the gap between the plastic frame 3 and the first adhesive layer 12.
  • the contact area improves the adhesion between the plastic frame 3 and the first bonding layer 12, so that the display panel 2 and the backlight module are more firmly bonded, and the structure of the display device is more stable.
  • the embodiment of the present disclosure further provides a method for manufacturing an adhesive tape, which is used for manufacturing the tape described above.
  • the method for manufacturing the adhesive tape includes:
  • Step S901 providing a mold for making a first release film, the bottom of the mold is provided with a plurality of second protrusions, and the plurality of second protrusions are respectively matched with the plurality of pits.
  • Step S902 using the mold to make a first release film.
  • Step S903 forming a first adhesive layer on a side of the first release film provided with a plurality of pits.
  • Step S904 covering the substrate layer on the first bonding layer.
  • Step S905 forming a second bonding layer on the substrate layer.
  • Step S906 covering the second release layer with the second release film.
  • the manufacturing method of the adhesive tape provided by the embodiment of the present disclosure includes the steps as described above, the adhesive tape produced by the manufacturing method has the structure described above, so that the manufacturing method of the adhesive tape has the same advantageous effects as the above-mentioned adhesive tape, No more details are given.

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Abstract

本公开一种胶带及其制作方法、显示装置。该胶带（1）包括层叠设置的第一离型膜（11）、第一粘结层（12）、衬底层（13）、第二粘结层（14）和第二离型膜（15），所述第一离型膜（11）朝向所述第一粘结层（12）的一面上设置有多个凹坑（111），所述第一粘结层（12）包括嵌入多个所述凹坑（111）中的多个第一凸起（121）。本公开该胶带用于粘合显示装置中的背光模组和显示面板（2）。

Description

胶带及其制作方法、显示装置 技术领域
本公开的实施例涉及一种胶带及其制作方法、显示装置。
背景技术
显示装置包括显示面板和背光模组，显示面板通过胶带粘结于背光模组的胶框上，由于胶框通常是通过切割的方式形成的，使得胶框的不同位置处具有高度差，进而使得胶框的很大一部分区域无法与胶带接触，导致胶带中的粘结层与胶框之间的接触面积较小，粘结层与胶框之间的粘结力较小，使得显示面板容易与背光模组分离。
发明内容
本公开的实施例提供一种胶带及其制作方法、显示装置。
根据本公开的至少一个实施例，提供一种胶带。
该胶带包括层叠设置的第一离型膜、第一粘结层、衬底层、第二粘结层和第二离型膜，所述第一离型膜朝向所述第一粘结层的一面上设置有多个凹坑，所述第一粘结层包括嵌入多个所述凹坑中的多个第一凸起。
本公开的实施例还一种显示装置，包括背光模组和显示面板，所述背光模组包括表面腐蚀处理后的胶框，所述背光模组的胶框与上述胶带中的所述第一粘结层粘合，所述显示面板的周边区域与上述胶带中的所述第二粘结层粘合。
本公开的实施例还提供一种胶带的制作方法，包括：
提供一用于制作所述第一离型膜的模具，所述模具底部设置有多个第二凸起，多个所述第二凸起分别与多个所述凹坑一一匹配；
使用所述模具制作所述第一离型膜；
在所述第一离型膜的设置有多个所述凹坑的一面上形成所述第一粘结层；
在所述第一粘结层上覆盖所述衬底层；
在所述衬底层上形成所述第二粘结层；以及
在所述第二粘结层上覆盖所述第二离型膜。
附图说明
以下将结合附图对本公开的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本公开的实施例，其中：
图1为显示装置的截面示意图；
图2为本公开实施例中的胶带的截面示意图；
图3为本公开实施例中的第一离型膜的朝向第一粘结层的一面的示意图；
图4为本公开实施例中的显示装置的截面示意图；
图5为本公开实施例中的第一种第一凸起的平面示意图；
图6为本公开实施例中的第二种第一凸起的截面示意图；
图7为本公开实施例中的第三种第一凸起的截面示意图；
图8为本公开实施例中对第一粘结层进行粘结力测试的过程示意图；
图9为本公开实施例中的胶带的制作方法流程图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在无需做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在显示技术领域，为了减小胶框的不同位置处的高度差采用的一种方式是对胶框进行表面腐蚀处理(VDI)，以粘结层与胶框之间的接触面积，提高粘结层与胶框之间的粘结力，但本申请的发明人发现，如图1所示，表面腐蚀处理后的胶框1’的表面仍然凹凸不平，粘结层无法与胶框1’的下凹位置接触，导致粘结层2’与胶框1’之间的粘结力仍然无法满足需求，使得显示面板3’与背光模组粘结仍然不够牢固。
本公开实施例提供一种胶带，如图2和图3所示，该胶带1包括层叠设置的第一离型膜11、第一粘结层12、衬底层13、第二粘结层14和第二离型膜15。第一离型膜11朝向第一粘结层12的一面上设置有多个凹坑111，第一粘结层12包括嵌入多个凹坑111中的多个第一凸起121。
本公开实施例提供的胶带1具有如上所述的结构，使得在将第一离型膜11剥离后，第一粘结层12上具有多个第一凸起121。在使用该胶带1将背光 模组和显示面板粘合时，如图4所示，胶带1中的第二粘结层14与显示面板2粘合，第一粘结层12与背光模组中的经过表面腐蚀处理的胶框3粘合，其中第一粘结层12上的各个第一凸起121能够与胶框3的下凹位置接触，进而能够有效增加胶框3和第一粘结层12之间的接触面积，提高了胶框3和第一粘结层12之间的粘结力，使显示面板2和背光模组粘结更牢固。由于第一粘结层12中的粘合剂具有一定流动性，即使第一粘结层12上的多个第一凸起121与胶框3上的下凹位置不是一一匹配的，在贴附作业时施加的压力的作用下，多个第一凸起121也会与胶框3的下凹位置接触，进而增加胶框3和第一粘结层12之间的接触面积。
需要说明的是，在以上描述中，并未对第二粘结层14和第二离型膜15的结构进行限定，本领域技术人员可以根据实际需要进行选择。由于在胶带1的使用过程中，第一粘结层12用于与背光模组中的胶框3粘合，第二粘结层14用于与显示面板2粘合，也即，第二粘结层14与显示面板2中的表面非常平整的玻璃基板粘合，因此，本公开实施例中，例如，如图2所示，第二离型膜15朝向第二粘结层14的一面为平面，以使得第二粘结层14朝向第二离型膜15的一面为平面，进而能够使得第二粘结层14与显示面板2之间的接触面积较大，使显示面板2与第二粘结层14之间的粘结力较大。
此外，本申请的发明人还发现，使用现有技术中的胶带粘合背光模组和显示面板时，胶带中的粘结层在受热时会发生很大的横向形变而发生褶皱，会进一步降低粘结层与胶框之间的粘结力，为了避免上述问题的出现，在本公开实施例中，例如，如图3所示，第一离型膜11朝向第一粘结层12的一面上的相邻两个凹坑111之间具有间隙，进而使得将第一离型膜11剥离后，第一粘结层12上相邻两个第一凸起121之间具有间隙，该间隙能够为第一凸起121在横向上的形变提供一定的空间，从而能够有效减小甚至消除第一粘结层12受热后在横向上的形变，避免因第一粘结层12褶皱而导致第一粘结层12与胶框3之间的粘结力降低的问题出现。
可选地，本公开实施例中的第一离型膜11和第二离型膜15均为聚脂薄膜，例如PET(聚对苯二甲酸乙二醇酯)薄膜，以使第一离型膜11和第二离型膜15具有机械性能优良，刚性、硬度及韧性高，耐穿刺，耐摩擦，耐高温和低温，耐化学药品性、耐油性、气密性和保香性良好等优点。可选地，第一粘结层12和第二粘结层14中的粘合剂均为丙烯酸类粘合剂，以使第一粘 结层12和第二粘结层14具有高强度，耐冲击、耐候性佳，可油面粘接，使用方便，抗冲击及剪切力强等优点。可选地，衬底层13为机械性能优良的聚脂薄膜。需要说明的是，第一离型膜11、第一粘结层12、衬底层13、第二粘结层14和第二离型膜15的材质不局限于此，本领域技术人员可以根据需要进行选择。
另外，若胶带1的厚度过小，则会导致胶带1中的第一粘结层12和第二粘结层14中的粘合剂过少，第一粘结层12与背光模组中的胶框3，或者第二粘结层14与显示面板2之间的粘结力均过小，使得背光模组和显示面板2易分离，若胶带1的厚度过大，则会导致显示装置的厚度过大，不利于显示装置的薄型化，因此，需要对胶带1的厚度进行合理的设置。示例性地，本公开实施例中胶带1的厚度为0.03mm～0.1mm。
为了便于本领域技术人员实施，下面本公开实施例对第一离型膜11朝向第一粘结层12的一面的多个凹坑111的设置方式进行详细的描述：
可选地，本公开实施例中，如图2和图3所示，第一离型膜11朝向第一粘结层12的一面上设置有具有相同形状的多个凹坑111，以使第一离型膜11的制作方法简单。例如，由于背光模组中的胶框3经过表面腐蚀处理后，胶框3上的下凹位置通常具有不同的尺寸，为了进一步增加第一粘结层12与胶框3之间的接触面积，例如，第一离型膜11朝向第一粘结层12的一面上设置有具有相同形状、且具有至少两种不同尺寸的多个凹坑111，此时，第一粘结层12中嵌入上述多个凹坑111中的多个第一凸起121也具有至少两种不同尺寸，使得第一粘结层12上的第一凸起121能够更好地与胶框3上的下凹位置接触。本公开实施例中的第一离型膜11朝向第一粘结层12的一面上设置的多个凹坑111也可以具有不同形状。
本公开实施例中的第一离型膜11朝向第一粘结层12的一面上的多个凹坑111可以规则分布也可以不规则分布。例如，如图3所示，第一离型膜11朝向第一粘结层12的一面上的多个凹坑111不规则分布，以使第一离型膜11朝向第一粘结层12的一面具有较大的粗糙度，进而使得第一粘结层12和背光模组中的胶框3之间具有更大的接触面积。
下面对第一离型膜11朝向第一粘结层12的一面的多个凹坑111具有的形状进行详细的描述：
例如，本公开实施例中的第一离型膜11朝向第一粘结层12的一面上的 凹坑111的形状为如图5所示的类似章鱼吸盘式形状，或者，如图6所示的半球形状，或者，如图7所示的圆锥形状。第一离型膜11朝向第一粘结层12的一面上的凹坑111的形状不局限于以上所述，还可以是其他形状。例如，本公开实施例中，凹坑111的开口的直径可以为5μm～10μm，凹坑111的深度可以为5μm～10μm，以使凹坑111的尺寸与经过表面腐蚀处理的胶框3上的下凹位置的尺寸相适应，以进一步提高第一粘结层12与胶框3之间的接触面积。例如，当凹坑111的开口的直径为5μm～10μm时，，相邻两个凹坑111的对称轴之间的距离可以为10μm～15μm，以使相邻两个凹坑111之间具有间隙。
为了便于本领域技术人员更好地理解本公开实施例中的胶带1的优势，本公开实施例中通过如图8所示的方式，对现有技术中的胶带中的粘结层和本公开实施例中的胶带1中的第一粘结层12的粘结力进行测试，其中，现有技术中的胶带和本公开实施例中的胶带1的区别为本公开实施例中的胶带1中的第一离型膜11上具有多个凹坑111，第一粘结层12包括分别嵌入该多个凹坑111中的多个第一凸起121，该多个凹坑111的形状为半球形状，每个凹坑的深度为5μm～10μm，每个凹坑111的开口的直径为5μm～10μm。
对现有技术中的胶带中的粘结层进行的粘结力测试结果和对本公开实施例中的胶带1中的第一粘结层12的粘结力的测试结果见表一：
表一
Figure PCTCN2016100667-appb-000001
由表一中内容可知，与现有技术中的胶带相比，本公开实施例中的胶带1中的第一粘结层12与背光模组中的胶框3之间的粘结力明显提高。
此外，本公开实施例还提供一种显示装置，如图4所示，该显示装置包括背光模组和显示面板2，背光模组包括表面腐蚀处理后的胶框3，其中，背光模组的胶框3与以上所述的胶带1中的第一粘结层12粘合，显示面板2的周边区域与以上所述的胶带1中的第二粘结层14粘合。
由于本公开实施例提供的显示装置具有如上所述的结构，从而使得第一 粘结层12上的各个第一凸起121能够与背光模组中的经过表面腐蚀处理的胶框3的下凹位置接触，进而能够有效增加胶框3和第一粘结层12之间的接触面积，提高了胶框3和第一粘结层12之间的粘结力，使显示面板2和背光模组粘结更牢固，使显示装置的结构更稳定。
此外，本公开实施例还提供一种胶带的制作方法，该胶带的制作方法用于制作以上所述的胶带，例如，如图9所示，该胶带的制作方法包括：
步骤S901、提供一用于制作第一离型膜的模具，模具底部设置有多个第二凸起，多个第二凸起分别与多个凹坑一一匹配。
步骤S902、使用模具制作第一离型膜。
步骤S903、在第一离型膜的设置有多个凹坑的一面上形成第一粘结层。
步骤S904、在第一粘结层上覆盖衬底层。
步骤S905、在衬底层上形成第二粘结层。
步骤S906、在第二粘结层上覆盖第二离型膜。
由于本公开实施例提供的胶带的制作方法包括如上所述的步骤，使用该制作方法制作的胶带具有以上所述的结构，从而使得该胶带的制作方法具有和上述胶带相同的有益效果，此处不再进行赘述。
以上所述，仅为本公开的示例实施例，但本公开的保护范围并不局限于此，任何熟悉本技术领域的普通技术人员在本公开揭露的技术范围内，可轻易想到变化或改进，这些变化和改进都应涵盖在本公开的保护范围之内。
本申请要求于2016年1月4日向SIPO提交的名称为“一种胶带及其制作方法、显示装置”的中国专利申请No.201610005977.1的优先权，其全文通过引用合并于本文。

Claims (13)

  1. 一种胶带，包括层叠设置的第一离型膜、第一粘结层、衬底层、第二粘结层和第二离型膜，其中所述第一离型膜朝向所述第一粘结层的一面上设置有多个凹坑，所述第一粘结层包括嵌入多个所述凹坑中的多个第一凸起。
  2. 根据权利要求1所述的胶带，其中，所述第一离型膜多个所述凹坑的形状相同。
  3. 根据权利要求2所述的胶带，其中，形状相同的多个所述凹坑具有至少两种不同尺寸。
  4. 根据权利要求1-3任一项所述的胶带，其中，多个所述凹坑不规则分布在所述第一离型膜朝向所述第一粘结层的该面上。
  5. 根据权利要求1-4任一项所述的胶带，其中，所述凹坑的形状为类章鱼吸盘式形状，或者，半球形状，或者，圆锥形状。
  6. 根据权利要求1-5任一项所述的胶带，其中，所述凹坑的开口的直径为5μm～10μm。
  7. 根据权利要求1-6任一项所述的胶带，其中，所述凹坑的深度为5μm～10μm。
  8. 根据权利要求1-7任一项所述的胶带，其中，相邻两个所述凹坑之间具有间隙。
  9. 根据权利要求1-8任一项所述的胶带，其中，所述第二离型膜朝向所述第二粘结层的一面为平面。
  10. 根据权利要求1-9任一项所述的胶带，其中，所述第一离型膜和所述第二离型膜均为聚脂薄膜，所述第一粘结层和所述第二粘结层中的粘合剂均为丙烯酸类粘合剂，所述衬底层为聚醋薄膜。
  11. 根据权利要求1-10任一项所述的胶带，其中，所述胶带的厚度为0.03mm～0.1mm。
  12. 一种显示装置，包括背光模组和显示面板，所述背光模组包括表面腐蚀处理后的胶框，其中所述背光模组的胶框与如权利要求1-11任一项所述的胶带中的所述第一粘结层粘合，所述显示面板的周边区域与如权利要求1-11任一项所述的胶带中的所述第二粘结层粘合。
  13. 一种胶带的制作方法，用于制作如权利要求1-11任一项所述的胶带， 包括：
    提供一用于制作所述第一离型膜的模具，所述模具的底部设置有多个第二凸起，多个所述第二凸起分别与多个所述凹坑一一匹配；
    使用所述模具制作所述第一离型膜；
    在所述第一离型膜的设置有多个所述凹坑的一面上形成所述第一粘结层；
    在所述第一粘结层上覆盖所述衬底层；
    在所述衬底层上形成所述第二粘结层；以及
    在所述第二粘结层上覆盖所述第二离型膜。
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