CN114316830A - Composite adhesive tape and display module - Google Patents
Composite adhesive tape and display module Download PDFInfo
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- CN114316830A CN114316830A CN202210134407.8A CN202210134407A CN114316830A CN 114316830 A CN114316830 A CN 114316830A CN 202210134407 A CN202210134407 A CN 202210134407A CN 114316830 A CN114316830 A CN 114316830A
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- 239000002131 composite material Substances 0.000 title claims abstract description 153
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 55
- 239000010410 layer Substances 0.000 claims abstract description 65
- 239000011241 protective layer Substances 0.000 claims abstract description 37
- 238000005452 bending Methods 0.000 claims description 47
- 239000000696 magnetic material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 description 12
- 230000036961 partial effect Effects 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Adhesive Tapes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention provides a composite adhesive tape and a display module. The composite adhesive tape is used for being attached to the surface of an object, the surface of the object comprises at least one bent part, and the surface of the bent part is an arc surface; the composite tape comprises a buffer layer and a protective layer which are stacked; when the composite adhesive tape is attached to the surface of an object, the protective layer is positioned on one side of the buffer layer, which is far away from the surface of the object; the composite tape comprises a first area, a second area and a third area, wherein the first area is used for being attached to the surface of the bent part; the protective layer includes at least one opening, and the opening is located in the first area. The invention can reduce the rebound stress when the first area is bent and improve the fitting degree of the composite adhesive tape and the surface of an object.
Description
Technical Field
The invention relates to the technical field of display, in particular to a composite adhesive tape and a display module.
Background
In the conventional display technology, a composite tape needs to be attached to the back surface of the display panel to protect the back surface of the display panel. With the development of technology, curved display screens, such as hyperbolic screens, quadric screens, and the like, have appeared. For the display panel with a bending part, when the composite tape is attached to the back surface of the display panel, the composite tape is easy to bounce and stick at the bending position, so that the composite tape is separated from the display panel.
Disclosure of Invention
The embodiment of the invention provides a composite adhesive tape and a display module, which aim to solve the problem that the composite adhesive tape and a display panel are separated from each other at a bending position in the prior art.
In a first aspect, an embodiment of the present invention provides a composite tape, where the composite tape is used for being attached to a surface of an object, the surface of the object includes at least one curved portion, and a surface of the curved portion is an arc surface; the composite tape comprises a buffer layer and a protective layer which are stacked; when the composite adhesive tape is attached to the surface of an object, the protective layer is positioned on one side of the buffer layer, which is far away from the surface of the object;
the composite tape comprises a first area, a second area and a third area, wherein the first area is used for being attached to the surface of the bent part;
the protective layer includes at least one opening, and the opening is located in the first area.
In a second aspect, an embodiment of the present invention further provides a display module, including the composite tape provided in any embodiment of the present invention; the display module further comprises a display panel, and the composite adhesive tape is attached to the surface of the display panel.
The composite adhesive tape and the display module provided by the embodiment of the invention have the following beneficial effects: the protective layer of the composite adhesive tape is provided with an opening, the opening is located in the first area, when the composite adhesive tape is attached to the display panel, the first area is attached to the bent portion of the display panel, and the first area needs to be bent to adapt to the shape of the surface of the bent portion. The trompil can reduce the rebound stress when first region is crooked to avoid the first region virtual subsides of bounce-back of compound sticky tape, can promote compound sticky tape and display panel's laminating degree.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.
FIG. 1 is a schematic view of a composite tape provided in an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1;
fig. 3 is a partial schematic view of a display module according to an embodiment of the invention;
fig. 4 is a simplified schematic diagram of a bonding process of a composite tape and a display panel according to an embodiment of the present invention;
FIG. 5 is a partial schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view illustrating a process of attaching the composite tape to the display panel according to the embodiment of FIG. 5;
FIG. 7 is a partial schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view illustrating a process of attaching the composite tape to the display panel according to the embodiment of FIG. 7;
FIG. 9 is a partial schematic view of another display module according to an embodiment of the invention;
FIG. 10 is a schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 12 is another schematic cross-sectional view taken along line A-A' of FIG. 1;
FIG. 13 is another schematic cross-sectional view taken along line A-A' of FIG. 1;
FIG. 14 is a schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 15 is a partial schematic view of another display module according to an embodiment of the invention;
FIG. 16 is a schematic view of another composite tape provided in accordance with an embodiment of the present invention;
FIG. 17 is a schematic view of another composite tape provided in accordance with an embodiment of the present invention;
fig. 18 is a schematic view of another composite tape provided in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In the prior art, in the process of attaching the composite adhesive tape to the display panel, a pressure maintaining silica gel head is required to be used for profiling one side of the composite adhesive tape, that is, the silica gel head is used for extrusion to assist the composite adhesive tape to attach to the display panel. At the position of the bending part of the display panel, the composite adhesive tape needs to be bent to adapt to the shape of the surface of the bending part, and then the composite adhesive tape attached to the bending part in the attaching process has larger resilience after being bent, and the resilience is also the force for recovering the bending deformation during bending. When the pressure maintaining force of the silica gel head is insufficient, the composite adhesive tape is easy to bounce and is attached in a virtual mode, so that the bending portion of the display panel is separated from the composite adhesive tape, and the attaching degree is affected.
The embodiment of the invention provides a composite adhesive tape, which is used for being attached to the surface of an object, wherein the surface of the object comprises at least one bent part. Taking the example of attaching the composite tape to the display panel with the curved portion, the surface of the display panel where the curved portion is located is an arc surface, and then a part of the composite tape needs to be curved to adapt to the shape of the surface of the curved portion to attach to the curved portion of the display panel. According to the invention, the structure of the composite adhesive tape is designed to ensure that the composite adhesive tape can be well attached to the curved surface at the position of the curved part of the display panel when the composite adhesive tape is attached to the display panel, so that the phenomenon that the composite adhesive tape is attached in a false manner due to rebounding after being curved is prevented, and the attachment degree of the composite adhesive tape and the display panel is improved.
Fig. 1 is a schematic view of a composite tape provided in an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view at a position of a cut line a-a' in fig. 1.
As seen in fig. 1 and 2, the composite tape 01 includes a buffer layer 10 and a protective layer 20 stacked; protective layer 20 includes at least one opening 30, wherein opening 30 is located in first region Q1 of composite tape 01. Composite tape 01 is shown in FIG. 1 to include two first regions Q1, first region Q1 including a plurality of apertures 30 therein. The composite adhesive tape 01 provided by the embodiment of fig. 1 can be attached to a display panel and then assembled into a hyperboloid display screen with two curved surfaces. In practice, the composite tape 01 may be designed according to specific requirements, and the composite tape 01 is configured to include one first region Q1, three first regions Q1 or four first regions Q1.
The embodiment of the invention also provides a display module, which comprises the composite adhesive tape 01 provided by any embodiment of the invention. Fig. 3 is a partial schematic view of a display module according to an embodiment of the invention, and as shown in fig. 3, the display module includes a composite tape 01 and a display panel 02. The composite tape 01 is attached to the surface of the display panel 02. The display panel 02 includes a bent portion 021, and a surface M1 of the bent portion 021 is an arc surface. The protective layer 20 is located on a side of the buffer layer 10 away from the display panel 02. The first region Q1 of the composite tape 01 is attached to the bend 021, i.e., the first region Q1 is attached to the surface M1.
Fig. 4 is a simplified schematic diagram of a process for bonding a composite tape 01 to a display panel according to an embodiment of the present invention, and as shown in fig. 4, when the composite tape 01 is bonded to the display panel 02, the composite tape 01 is pressed on one side of the protective layer 20 by the silicone head 40, and a certain pressure is applied to the composite tape 01 through the silicone head 40 and is kept for a certain time, so as to complete the profiling bonding between the composite tape 01 and the display panel 02.
In the composite tape 01 provided by the embodiment of the invention, the first region Q1 of the protection layer 20 has the opening 30, when the composite tape 01 is attached to the display panel 02, the first region Q1 is attached to the bending part 021 of the display panel 02, and the first region Q1 needs to be bent to adapt to the shape of the surface M1 of the bending part 021. The opening 30 can reduce the rebound stress when the first region Q1 is bent, so that the first region Q1 of the composite tape 01 is prevented from being rebounded and attached, and the attaching degree of the composite tape 01 and the display panel 02 can be improved.
As shown in fig. 2, in the thickness direction e of the protective layer 20, the depth d1 of the opening 30 is equal to the thickness d2 of the protective layer 20. I.e. the opening 30 extends through the protective layer 20.
In other embodiments, the depth d1 of the opening 30 is less than the thickness d2 of the protective layer 20. That is, the opening 30 does not penetrate through the protection layer 20, and the opening 30 corresponds to a slot formed on the surface of the protection layer 20 away from the buffer layer 10. In the embodiment of the invention, the depth d1 of the opening 30 can be set according to specific requirements, so that the opening 30 is utilized to reduce the rebound stress when the first region Q1 is bent, thereby preventing the first region Q1 of the composite tape 01 from rebounding and being attached falsely, and improving the attaching degree of the composite tape 01 and the display panel 02.
In some embodiments, fig. 5 is a partial schematic view of another composite tape provided in an embodiment of the present disclosure, and fig. 6 is a schematic view of a process for attaching the composite tape provided in the embodiment of fig. 5 to a display panel. As shown in fig. 5, the magnetic material 50 is filled in the opening 30. As shown in fig. 6, when the composite tape 01 and the display panel 02 are bonded to each other, the composite tape 01 is pressed by the silicone head 40 on the side of the protective layer 20, and the jig 41 is used to position and fix the display panel 02 on the side of the display panel 02 away from the composite tape 01. The jig 41 is provided with a magnetic body 42, and the magnetic body 42 corresponds to the bent portion 021 of the display panel 02, that is, the magnetic body 42 corresponds to the first region Q1 of the composite tape 01. In the profiling attaching process, an attractive acting force can be formed between the magnetic body 42 and the magnetic material 50 filled in the opening 30, so that the pressure can be increased, the composite adhesive tape can be prevented from rebounding and being attached in a virtual mode, and the attaching degree of the composite adhesive tape and the display panel can be further improved.
In some embodiments, fig. 7 is a partial schematic view of another composite tape provided in the embodiments of the present disclosure, and fig. 8 is a schematic view of a process for attaching the composite tape provided in the embodiment of fig. 7 to a display panel. As shown in fig. 7, the magnetic material 50 is filled in the open hole 30. The area other than the opening 30 in the first area Q1 is a non-porous area F; in the non-porous region F, at least a part of the surface of the protective layer 20 on the side away from the buffer layer 10 is covered with a magnetic material 50. In other words, the magnetic material 50 fills the opening 30 and spreads out of the opening 30 to cover at least a part of the surface of the protective layer 20.
As shown in fig. 8, when the composite tape 01 is attached to the display panel 02, the first region Q1 of the composite tape 01 is bent, and the opening 30 in the protective layer 20 can reduce the rebound stress when the first region Q1 is bent, thereby reducing the risk of the first region Q1 of the composite tape 01 rebounding and being pasted falsely; meanwhile, the magnetic material 50 and the magnetic body 42 in the jig 41 can form an attractive acting force, so that the pressure is increased, and the composite adhesive tape is further prevented from being rebounded and attached falsely; in addition, the magnetic material 50 covering the surface of the protective layer 20 can increase the bending radius of the first region Q1, thereby further increasing the holding force.
In some embodiments, fig. 9 is a partial schematic view of another display module according to an embodiment of the disclosure. As shown in fig. 9, the display panel 02 includes a flat plate portion 022, a surface of the flat plate portion 022 is substantially flat, and the flat plate portion 022 is connected to the bent portion 021. The side of the bent portion 021 away from the flat plate portion 022 is bent in a direction perpendicular to the plane of the flat plate portion 022, and a bending direction f of the bent portion 021 is illustrated in fig. 9. In the bending direction f of the bent part 021, the bent part 021 includes a first zone Z1, a second zone Z2 and a third zone Z3 which are connected in sequence; the position where the radius of curvature is smallest in the curved portion 012 is located at the second zone Z2. When the composite tape 01 is attached to the surface of the display panel 02, the opening 30 corresponds to the second zone Z2. In this embodiment, the curvature radius of each position of the curved part 021 of the display panel 02 is not exactly the same, and when the composite tape 01 is attached to the position of the curved part 021 where the curvature radius is the smallest, the curvature radius of the portion of the composite tape 01 that is bent is also smaller, in other words, the degree of bending of the portion of the composite tape 01 is larger, and the portion of the composite tape 01 is more likely to cause the bounce-back virtual attachment. The composite adhesive tape 01 provided by the embodiment of the invention is suitable for the bending shape of the bending part 021 of the display panel 02, the position of the opening 30 in the first region Q1 is set, the rebound stress at the position with the minimum curvature radius of the bending of the composite adhesive tape 01 can be effectively reduced, the composite adhesive tape 01 is prevented from being rebounded and attached in a virtual manner, and the attaching degree of the composite adhesive tape 01 and the display panel 02 is improved.
In some embodiments, as shown in fig. 1, in the first region Q1, the plurality of openings 30 are arranged in a row in the first direction x. When the composite tape 01 is attached to the surface of an object, the first direction x is parallel to the axial direction of the bending portion, wherein the bending portion is bent around the axial direction. For a cylinder, the direction of the line connecting the centers of the imaginary circles in the cylinder is axial. The axial direction of the curved portion in the embodiment of the present invention can be understood with reference to the axial direction of the cylindrical body. The bending direction f of the bend 021 is illustrated in fig. 3, the axial direction of the bend 021 being perpendicular to the paper. According to the embodiment of the invention, the arrangement direction of the holes in the composite tape 01 is designed according to the bending shape of the object to be attached, so that when the first region Q1 is attached to the bending part 021 of the display panel 02, the holes 30 can reduce the rebound stress of the first region Q1 when the first region Q1 is bent, the first region Q1 of the composite tape 01 is prevented from rebounding and being attached in a virtual mode, and the attachment degree of the composite tape 01 and the display panel 02 can be improved.
In some embodiments, fig. 10 is a schematic view of another composite tape provided by the embodiments of the present invention, as shown in fig. 10, in the first region Q1, the plurality of openings 30 are randomly arranged. The rebound stress of the first area Q1 at different positions during bending can be reduced, and the first area Q1 of the composite tape 01 can be prevented from rebounding and being pasted falsely.
The shape of the opening 30 is illustrated in fig. 1 and 10 as being substantially circular. In some embodiments, the shape of the aperture 30 may also be rectangular, oval, triangular, irregular, etc.
In one embodiment, fig. 11 is a schematic view of another composite tape provided by the embodiment of the invention, and as shown in fig. 11, the openings 30 in the first region Q1 are rectangular.
In addition, the size of the opening 30 is not limited in the embodiment of the present invention.
In some embodiments, FIG. 12 is another schematic cross-sectional view taken at line A-A' of FIG. 1. As shown in fig. 12, the composite tape 01 further includes an electrostatic shielding layer 60, and the electrostatic shielding layer 60 is located between the buffer layer 20 and the protective layer 10. The composite adhesive tape 01 is attached to the display panel 02 to form a display module, and the electrostatic shielding layer 60 is used for shielding static electricity so as to avoid adverse effects of the static electricity on the display of the display panel 02.
As shown in fig. 12, the electrostatic shielding layer 60 includes a support layer 61 and a conductive layer 62 stacked, and the conductive layer 62 is located on a side of the support layer 61 away from the buffer layer 10.
In some embodiments, support layer 61 comprises polyimide.
In some embodiments, conductive layer 62 comprises copper foil or graphene material.
In some embodiments, cushioning layer 10 comprises foam.
In some embodiments, FIG. 13 is another schematic cross-sectional view taken at line A-A' of FIG. 1. Fig. 14 is a schematic view of another composite tape provided in the embodiment of the present invention.
As shown in fig. 13, the electrostatic shield layer 60 includes at least one cutting line 63 located in the first region Q1. The cutting line 63 cuts the electrostatic shielding layer 60. That is, the electrostatic shielding layers 60 on both sides of the cutting line 63 are not continuous, and may be physically in contact with each other. Fig. 13 shows that the cut line 63 overlaps the opening 30 in the thickness direction e of the protective layer 30.
The embodiment of the present invention does not limit the positional relationship between the cutting line 63 and the opening 30. In some embodiments, the cut line 63 does not overlap the opening 30 in the thickness direction e of the protective layer 30.
In the embodiment of the present invention, an included angle between the extending direction of the cutting line 63 and the first direction x is θ, and θ is less than or equal to 10 °. Fig. 14 is a schematic view of the buffer layer 10 viewed from the electrostatic shielding layer 60, and fig. 14 shows that the extension direction of the cutting line 63 is substantially the same as the first direction x, that is, θ is 0 °. When the composite tape 01 is attached to the surface of an object, the first direction x is parallel to the axial direction of the bending part.
In the embodiment of the present invention, the cutting line 63 located in the first region Q1 is provided in the electrostatic shielding layer 60, the electrostatic shielding layer 60 is cut at the position of the cutting line 63, and the provision of the cutting line 63 can reduce the rebound stress when the electrostatic shielding layer 60 is bent, that is, the rebound stress when the first region Q1 is bent, thereby further reducing the risk of the first region Q1 of the composite tape 01 being rebounded and pasted. The cutting line 63 is provided only to partially cut the electrostatic shielding layer 60, and does not affect the electrostatic shielding performance of the entire electrostatic shielding layer 60.
In some embodiments, fig. 15 is a partial schematic view of another display module according to an embodiment of the invention, as shown in fig. 15, in a bending direction f of a bending portion 021, the bending portion 021 includes a first region Z1, a second region Z2 and a third region Z3 sequentially connected to each other; the position where the radius of curvature is smallest in the curved portion 012 is located at the second zone Z2. When the composite tape 01 is attached to the surface of the display panel 02, the cutting line 63 corresponds to the second zone Z2. In this embodiment, the curvature radius of the curved portion 021 of the display panel 02 is not exactly the same at each position, and when the composite tape 01 is attached to the position of the curved portion 021 where the curvature radius is the smallest, the curvature radius at which the composite tape 01 is partially bent is also smaller. That is, the bending degree of the portion of the composite tape 01 is relatively large, so that the portion of the composite tape 01 is more likely to cause the bouncing virtual sticking. The composite adhesive tape 01 provided by the embodiment of the invention is suitable for the bending shape of the bending part 021 of the display panel 02, the position of the opening 30 in the first region Q1 is set, the rebound stress at the minimum position of the bending curvature radius of the composite adhesive tape 01 can be effectively reduced, and meanwhile, the cutting line 63 in the electrostatic shielding layer 60 is arranged to correspond to the second region Z2, so that the rebound stress at the minimum position of the bending curvature radius of the composite adhesive tape 01 can be further reduced, the composite adhesive tape 01 is effectively prevented from being rebounded and attached in a virtual manner, and the attaching degree of the composite adhesive tape 01 and the display panel 02 is improved.
As shown in fig. 14, in the first region Q1, a plurality of cutting lines 63 are arranged in a row in the first direction x. When the composite tape 01 is attached to the surface of an object, the first direction x is parallel to the axial direction of the bending portion, wherein the bending portion is bent around the axial direction. According to the embodiment of the invention, the arrangement direction of the cutting line 63 in the electrostatic shielding layer 60 is designed according to the curved shape of the object to be attached, so that when the first region Q1 is attached to the curved part 021 of the display panel 02, the arrangement of the cutting line 63 can reduce the rebound stress when the first region Q1 is curved, and therefore, the first region Q1 of the composite adhesive tape 01 is prevented from rebounding and being attached in a virtual manner, and the attachment degree of the composite adhesive tape 01 and the display panel 02 is improved.
In some embodiments, fig. 16 is a schematic view of another composite tape provided by an embodiment of the present invention, and fig. 16 is a schematic view of the electrostatic shielding layer 60 looking at the buffer layer 10, as shown in fig. 16, the plurality of cutting lines 63 are randomly arranged in the first region Q1, such that the elastic stress at different positions in the first region Q1 during bending can be reduced, and the first region Q1 of the composite tape 01 can be prevented from being elastically deformed.
In an embodiment of the present invention, first region Q1 of composite tape 01 further includes a non-porous region F that surrounds apertures 30. In some embodiments, fig. 17 is a schematic view of another composite tape provided by the embodiments of the present invention, as shown in fig. 17, at least a portion of the surface of the protection layer 20 on the side away from the buffer layer 10 in the non-porous region F is concave-convex. The surface of the protective layer 20 has grooves and/or projections to exhibit concavities and convexities. The embodiment of the present invention does not limit the specific shape of the groove or the protrusion. The surface of the protective layer 20 on the side away from the buffer layer 10 is formed in a concave-convex shape, and the roughness of the surface of the protective layer 20 can be increased. When the composite adhesive tape 01 is attached to the display panel 02, the surface with larger roughness can increase the resistance of the pressure maintaining silica gel head in the profiling process, so that the pressure maintaining force of the bent part is increased, and the risk of the first area Q1 rebounding and being attached in a virtual mode is further reduced.
In some embodiments, at least a portion of the surface of the protective layer 20 on the side away from the buffer layer 10 is spark-eroded to form a textured surface.
In some embodiments, the surface of the protection layer 20 away from the buffer layer 10 is concave-convex, that is, the surface of the protection layer 20 away from the buffer layer 10 has a larger roughness.
In some embodiments, fig. 18 is a schematic view of another composite tape provided by an embodiment of the present invention, as shown in fig. 18, in the non-porous region F, at least a part of a surface of the protection layer 20 on a side away from the buffer layer 10 is concave-convex, and at least a part of a surface of the protection layer 20 on a side away from the buffer layer 10 is covered with the magnetic material 50. When the magnetic material 50 is plated on the surface having the concave-convex shape, the process conditions are set so that the thickness of the magnetic material 50 formed on the surface of the protective layer 20 can be controlled, and when the thickness of the magnetic material 50 is small, the magnetic material 50 on the surface of the protective layer 20 can also have the concave-convex shape, thereby increasing the roughness. When the composite adhesive tape 01 is attached to the display panel 02, the surface with larger roughness can increase the resistance of the pressure maintaining silica gel head in the profiling process, so that the pressure maintaining force of the bent part is increased, and the risk of the first area Q1 rebounding and being attached in a virtual mode is further reduced. The magnetic material 50 and the magnetic body 42 in the jig 41 can form an attractive acting force, so that the pressure is increased, and the composite adhesive tape is further prevented from being rebounded and attached falsely; in addition, the magnetic material 50 covering the surface of the protective layer 20 can increase the bending radius of the first region Q1, thereby further increasing the holding force.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (14)
1. The composite adhesive tape is characterized by being used for being attached to the surface of an object, wherein the surface of the object comprises at least one bent part, and the surface of the bent part is an arc surface; the composite tape comprises a buffer layer and a protective layer which are stacked; when the composite adhesive tape is attached to the surface of the object, the protective layer is positioned on one side of the buffer layer, which is far away from the surface of the object;
the composite tape comprises a first area, and the first area is used for being attached to the surface of the bent part; the protective layer includes at least one opening, the opening being located in the first region.
2. The composite tape of claim 1,
the depth of the opening in the thickness direction of the protective layer is d 1;
the thickness of the protective layer is d2, and d1 is not less than d 2.
3. The composite tape of claim 1,
and a magnetic material is filled in the open hole.
4. The composite tape of claim 1,
the bending part comprises a first area, a second area and a third area which are sequentially connected in the bending direction of the bending part; the position where the radius of curvature is smallest in the curved portion is located in the second region;
when the composite adhesive tape is attached to the surface of the object, the opening corresponds to the second area.
5. The composite tape of claim 1,
in the first region, the openings are arranged in a row in a first direction;
when the composite adhesive tape is attached to the surface of the object, the first direction is parallel to the axial direction of the bending part, wherein the bending part is bent around the axial direction.
6. The composite tape of claim 1,
in the first area, a plurality of the openings are irregularly arranged.
7. The composite tape of claim 1,
the composite adhesive tape further comprises an electrostatic shielding layer, wherein the electrostatic shielding layer is positioned between the buffer layer and the protective layer;
the electrostatic shielding layer comprises at least one cutting line positioned in the first area; an included angle between the extending direction of the cutting line and the first direction is theta, and theta is less than or equal to 10 degrees;
when the composite adhesive tape is attached to the surface of the object, the first direction is parallel to the axial direction of the bending part, wherein the bending part is bent around the axial direction.
8. The composite tape of claim 7,
the bending part comprises a first area, a second area and a third area which are sequentially connected in the bending direction of the bending part; the position where the radius of curvature is smallest in the curved portion is located in the second region;
when the composite adhesive tape is attached to the surface of the object, the cutting line corresponds to the second area.
9. The composite tape of claim 7,
the electrostatic shielding layer comprises a support layer and a conductive layer which are stacked, and the conductive layer is positioned on one side of the support layer far away from the buffer layer.
10. The composite tape of claim 7,
in the first region, the plurality of cutting lines are arranged in a row in the first direction.
11. The composite tape of claim 7,
in the first region, a plurality of the cutting lines are arranged irregularly.
12. The composite tape of claim 1,
the first region further comprises a non-porous region surrounding the opening;
at least part of the surface of the protection layer, which is far away from the buffer layer, in the non-porous area is concave-convex.
13. The composite tape of claim 1,
the first region further comprises a non-porous region surrounding the opening;
at least part of the surface of the side, far away from the buffer layer, of the protective layer in the non-porous region is covered with a magnetic material.
14. A display module comprising the composite tape of any one of claims 1 to 13; the display module further comprises a display panel, and the composite adhesive tape is attached to the surface of the display panel.
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| CN202210134407.8A CN114316830B (en) | 2022-02-14 | 2022-02-14 | Composite adhesive tape and display module |
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| CN202210134407.8A CN114316830B (en) | 2022-02-14 | 2022-02-14 | Composite adhesive tape and display module |
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| CN114316830A true CN114316830A (en) | 2022-04-12 |
| CN114316830B CN114316830B (en) | 2023-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115181508A (en) * | 2022-08-12 | 2022-10-14 | 厦门天马显示科技有限公司 | Composite adhesive tape and display panel comprising same |
| CN115294866A (en) * | 2022-08-01 | 2022-11-04 | 厦门天马显示科技有限公司 | Composite adhesive tape, shaping method thereof, display panel and display device |
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| CN111976249A (en) * | 2020-08-20 | 2020-11-24 | 合肥维信诺科技有限公司 | Composite foam layer and display module |
| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113442543A (en) * | 2020-03-24 | 2021-09-28 | 京东方科技集团股份有限公司 | Bonding device and bonding method of display substrate |
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| CN107871770A (en) * | 2016-09-27 | 2018-04-03 | 三星显示有限公司 | Display device |
| CN113442543A (en) * | 2020-03-24 | 2021-09-28 | 京东方科技集团股份有限公司 | Bonding device and bonding method of display substrate |
| CN111976249A (en) * | 2020-08-20 | 2020-11-24 | 合肥维信诺科技有限公司 | Composite foam layer and display module |
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| CN115294866A (en) * | 2022-08-01 | 2022-11-04 | 厦门天马显示科技有限公司 | Composite adhesive tape, shaping method thereof, display panel and display device |
| CN115294866B (en) * | 2022-08-01 | 2024-01-02 | 厦门天马显示科技有限公司 | Composite adhesive tape, molding method thereof, display panel and display device |
| CN115181508A (en) * | 2022-08-12 | 2022-10-14 | 厦门天马显示科技有限公司 | Composite adhesive tape and display panel comprising same |
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| Publication number | Publication date |
|---|---|
| CN114316830B (en) | 2023-12-08 |
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