Connecting adhesive tape and display device

Abstract

The utility model relates to the technical field of display, in particular to a connecting adhesive tape and a display device. The connecting adhesive tape provided by the utility model is used for connecting a backlight module and a display panel, the connecting adhesive tape comprises foam rubber, an inflation cavity is formed in the foam rubber, an inflation hole communicated with the inflation cavity is further formed in the foam rubber, and a plurality of air outlet holes communicated with the inflation cavity are formed in at least one side of the foam rubber in an array mode. According to the connecting adhesive tape provided by the utility model, when a backlight module and a display panel which are adhered and fixed by the connecting adhesive tape need to be detached, air is inflated into the inflating cavity of the foam adhesive through the inflating hole, so that the air can be discharged through the air outlet hole, and the air discharged from the air outlet hole impacts a bonding surface between the backlight module or the display panel and the foam adhesive; and the bonding area between the backlight module or the display panel and the foam rubber is reduced, so that the backlight module and the display panel are conveniently detached, and the backlight module and the display panel are prevented from being detached and damaged.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a connecting tape and a display device. Background Technology

[0002] The display device includes a display panel and a backlight module that provides a backlight to the display panel to ensure that the display panel can display images normally. Currently, the display panel and the backlight module are usually glued together with adhesive tape. However, existing adhesive tape is usually designed as double-sided tape, and the adhesion between the display panel / backlight module and the adhesive tape is relatively strong. This makes disassembly difficult when the backlight module and display panel need to be separated for inspection or repair, and the process of separating the backlight module and display panel can easily cause damage to both.

[0003] Therefore, there is an urgent need for a connecting tape and display device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a connecting tape and a display device to facilitate the separation of the backlight module and the display panel, and to avoid damage to the backlight module and the display panel during separation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A connecting tape for connecting a backlight module and a display panel, the connecting tape comprising:

[0007] The foam adhesive has an internal air chamber and an air hole communicating with the air chamber. Furthermore, a plurality of air outlet holes communicating with the air chamber are arranged in an array on at least one side of the foam adhesive.

[0008] As an optional solution, the connecting tape further includes:

[0009] An anti-sticking membrane is disposed on the cavity wall of the inflation chamber, and the air outlet penetrates the anti-sticking membrane.

[0010] As an optional feature, the connection strength between the anti-adhesive membrane and the cavity wall of the inflation chamber is 80gf / 25mm to 200gf / 25mm.

[0011] As an optional feature, the inner diameter of the inflation hole is 0.1mm to 0.6mm.

[0012] As an optional solution, multiple air outlets communicating with the air chamber are arranged in an array on both opposite sides of the foam adhesive.

[0013] As an optional feature, the wall thickness of the foam adhesive is 0.05mm to 0.2mm.

[0014] Alternatively, the foam adhesive can be made of PE or EVA material.

[0015] As an optional solution, the connecting tape further includes:

[0016] Release film, the release film is adhered to the outer surface of the foam adhesive.

[0017] As an optional embodiment, the release film includes a handle portion and an adhesive portion connected together, the adhesive portion being attached to the outer surface of the foam adhesive, and the handle portion extending out of the foam adhesive.

[0018] A display device includes a backlight module, a display panel, and a connecting tape as described above, the connecting tape being configured to adhere and fix the backlight module and the display panel.

[0019] As an optional solution, the circumferential frame of the backlight module is fixed to the circumferential frame of the display panel by means of the connecting tape.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides a connecting tape for connecting a backlight module and a display panel. The tape includes foam adhesive with an internal air chamber and air inlets communicating with the air chamber. Multiple air outlets communicating with the air chamber are arrayed on at least one side of the foam adhesive. When the backlight module and display panel, which are fixed together by the connecting tape, need to be separated, gas is injected into the air chamber through the air inlets. The gas is then released through the air outlets, impacting the adhesive surface between the backlight module / display panel and the foam adhesive. This reduces the adhesive area, facilitating separation of the backlight module and display panel. Furthermore, the separation process avoids damage to the backlight module and display panel, improving their protection.

[0022] This utility model also provides a display device in which a backlight module and a display panel are glued and fixed using the aforementioned connecting tape. When it is necessary to separate the backlight module and the display panel, gas is injected into the air chamber of the foam adhesive through the air inlet. The gas is then discharged through the air outlet, which impacts the bonding surface between the backlight module or the display panel and the foam adhesive, reducing the bonding area between the backlight module or the display panel and the foam adhesive. This facilitates the separation of the backlight module and the display panel and avoids damage to the backlight module and the display panel during the separation process, thus improving the protection of the backlight module and the display panel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the foam adhesive provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a cross-sectional view of the connecting tape provided in Embodiment 1 of this utility model;

[0025] Figure 3 This is a partial structural cross-sectional view of the display device provided in Embodiment 1 of this utility model;

[0026] Figure 4 This is a top view of the connecting tape provided in Embodiment 1 of this utility model being pasted onto the backlight module;

[0027] Figure 5 This is a schematic diagram of the first process of processing the connecting tape according to Embodiment 1 of this utility model;

[0028] Figure 6 This is a schematic diagram of the second process of processing the connecting tape provided in Embodiment 1 of this utility model;

[0029] Figure 7 This is a schematic diagram of the third process of processing the connecting tape provided in Embodiment 1 of this utility model;

[0030] Figure 8 This is a schematic diagram of the fourth process of processing the connecting tape provided in Embodiment 1 of this utility model;

[0031] Figure 9 This is a schematic diagram of the fifth process of processing the connecting tape provided in Embodiment 1 of this utility model;

[0032] Figure 10 This is a cross-sectional view of the connecting tape provided in Embodiment 2 of this utility model;

[0033] Figure 11 This is a partial structural cross-sectional view of the display device provided in Embodiment 2 of this utility model.

[0034] In the picture:

[0035] 10. Connecting tape; 20. Backlight module; 30. Display panel;

[0036] 1. Foam adhesive; 11. Inflation chamber; 12. Inflation hole; 13. Vent hole; 2. Anti-stick film; 3. Release film;

[0037] 100. First fixture; 200. Second fixture; 210. Insertion teeth. Detailed Implementation

[0038] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] Example 1

[0043] Currently, display panels and backlight modules are typically bonded together using adhesive tape. However, existing adhesive tapes are usually designed as double-sided tapes, and the adhesion between the display panel / backlight module and the tape is relatively strong. This makes disassembly difficult when the backlight module and display panel need to be separated for inspection or repair, and the process of separating the backlight module and display panel can easily cause damage to both.

[0044] Figure 1 This is a schematic diagram of the structure of the foam adhesive 1 provided in Embodiment 1 of this utility model; Figure 2 This is a structural cross-sectional view of the connecting tape 10 provided in Embodiment 1 of this utility model; Figure 3 This is a partial structural cross-sectional view of the display device provided in Embodiment 1 of this utility model. Figure 4 This is a top view of the connecting tape 10 provided in Embodiment 1 of this utility model being adhered to the backlight module 20. To solve the above problems, such as... Figures 1-4 As shown, this embodiment provides a connecting tape 10 for connecting a backlight module 20 and a display panel 30. The connecting tape 10 includes foam adhesive 1, which has an inflation cavity 11 inside. The foam adhesive 1 also has an inflation hole 12 communicating with the inflation cavity 11, and at least one side of the foam adhesive 1 has an array of multiple air outlet holes 13 communicating with the inflation cavity 11. The connecting tape 10 provided in this embodiment allows for the separation of the backlight module 20 and the display panel 30 when they need to be separated. Gas is injected into the inflation chamber 11 of the foam adhesive 1 through the inflation hole 12, allowing the gas to escape through the vent hole 13. This gas then impacts the bonding surface between the backlight module 20 or the display panel 30 and the foam adhesive 1, reducing the bonding area and facilitating the separation of the backlight module 20 and the display panel 30. Furthermore, this process avoids damage to the backlight module 20 and the display panel 30, thus improving their protection. It should be noted that when the backlight module 20 and the display panel 30 are properly attached and fixed by the connecting tape 10, the inflation cavity 11 is under compression, thereby ensuring the stability and reliability of the backlight module 20 and the display panel 30 being attached and fixed by the connecting tape 10.

[0045] Optionally, in this embodiment, the inner diameter of the inflation hole 12 is 0.1mm to 0.6mm. Specifically, the inner diameter of the inflation hole 12 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or 0.6mm. This limitation avoids the inflation hole 12 being too large, which would affect the tightness of the adhesion between the backlight module 20 and the display panel 30, and also avoids the inflation hole 12 being too small, ensuring smooth inflation into the inflation cavity 11. It should be noted that the shape of the inflation hole 12 can be rectangular, circular, or other shapes. It should also be noted that when the backlight module 20 and the display panel 30 are normally adhered and fixed by the connecting tape 10, the inflation hole 12 is also in a compressed state. The aforementioned inner diameter of the inflation hole 12 refers to the size of the inflation hole 12 when it is not compressed.

[0046] Optionally, in this embodiment, a plurality of air vents 13 communicating with the inflation cavity 11 are arrayed on one side of the foam adhesive 1. Optionally, in this embodiment, the side of the foam adhesive 1 with the plurality of air vents 13 is used to adhere and fix it to the display panel 30, thereby facilitating the removal of the display panel 30 from the foam adhesive 1 and avoiding the risk of the display panel 30 breaking apart during the disassembly of the backlight module 20 and the display panel 30. In other embodiments, the side of the foam adhesive 1 with the plurality of air vents 13 is used to adhere and fix it to the backlight module 20.

[0047] Optionally, in this embodiment, the foam adhesive 1 is made of PE or EVA material. This design effectively ensures the cushioning performance of the foam adhesive 1. It should be noted that the adhesive strength of the adhesive coated on the outer surface of the foam adhesive 1 is 2500gf / 25mm to 3300gf / 25mm. Specifically, the adhesive strength of the adhesive coated on the outer surface of the foam adhesive 1 is 2500gf / 25mm, 2800gf / 25mm, 3000gf / 25mm, 3200gf / 25mm, or 3300gf / 25mm. This design ensures the bonding stability between the display panel 30 and the backlight module 20 and the foam adhesive 1. Optionally, adhesive is coated on both the side of the foam adhesive 1 with multiple vent holes 13 and the side of the foam adhesive 1 opposite to the vent holes 13 to ensure double-sided adhesion of the foam adhesive 1.

[0048] In this embodiment, as Figure 2 and Figure 3 As shown, the connecting tape 10 provided in this embodiment also includes an anti-sticking membrane 2, which is disposed on the cavity wall of the inflation chamber 11, and the air outlet 13 penetrates the anti-sticking membrane 2. By providing the anti-sticking membrane 2 on the cavity wall of the inflation chamber 11, the phenomenon of adhesion and blockage of the cavity wall of the inflation chamber 11 under the action of extrusion pressure is avoided, ensuring the smooth air intake of the inflation chamber 11.

[0049] Optionally, in this embodiment, the connection strength between the anti-adhesion membrane 2 and the cavity wall of the inflation cavity 11 is 80gf / 25mm to 200gf / 25mm. Specifically, the connection strength between the anti-adhesion membrane 2 and the cavity wall of the inflation cavity 11 can be 80gf / 25mm, 100gf / 25mm, 120gf / 25mm, 150gf / 25mm, or 200gf / 25mm. These values ​​ensure the connection strength between the anti-adhesion membrane 2 and the cavity wall of the inflation cavity 11.

[0050] Optionally, in this embodiment, the anti-adhesive film 2 is made of PTFE, PET, BOPP, or PE. This material limitation ensures the flexibility and high-temperature resistance of the anti-adhesive film 2.

[0051] Optionally, in this embodiment, the wall thickness of the foam adhesive 1 is 0.05mm to 0.2mm. Specifically, the wall thickness of the foam adhesive 1 can be 0.05mm, 0.1mm, 0.15mm, or 0.2mm. The above-mentioned limitations not only ensure the cushioning performance of the foam adhesive 1, but also ensure the reliability of the inflation chamber 11.

[0052] In this embodiment, as Figure 2 and Figure 3 As shown, the connecting tape 10 also includes a release film 3, which is adhered to the outer surface of the foam adhesive 1. By adhering the release film 3 to the outer surface of the foam adhesive 1, the protection of the outer surface of the foam adhesive 1 is improved. When it is necessary to use the connecting tape 10 to bond and fix the backlight module 20 and the display panel 30, the release film 3 adhered to the outer surface of the foam adhesive 1 can be removed.

[0053] Optionally, in this embodiment, the release film 3 is made of PTFE, PET, BOPP, or PE. This embodiment does not limit the specific material of the release film 3.

[0054] Optionally, in other embodiments, the release film 3 includes a handle portion and an adhesive portion connected together. The adhesive portion is attached to the outer surface of the foam adhesive 1, and the handle portion extends out of the foam adhesive 1. By providing the handle portion, it is easier to peel the release film 3 off the foam adhesive 1, making it more convenient to remove the release film 3.

[0055] like Figure 3 and Figure 4As shown, this embodiment also provides a display device, which includes a backlight module 20, a display panel 30, and the aforementioned connecting tape 10. The connecting tape 10 is configured to adhere and fix the backlight module 20 and the display panel 30. By applying the connecting tape 10, when it is necessary to separate the backlight module 20 and the display panel 30, gas is injected into the inflation cavity 11 of the foam adhesive 1 through the inflation hole 12. The gas is then discharged through the vent hole 13, thereby impacting the bonding surface between the backlight module 20 or the display panel 30 and the foam adhesive 1, reducing the bonding area between the backlight module 20 or the display panel 30 and the foam adhesive 1. This facilitates the separation of the backlight module 20 and the display panel 30, and avoids damage to the backlight module 20 and the display panel 30 during the separation process, thus improving the protection of the backlight module 20 and the display panel 30. Specifically, in this embodiment, the side of the foam adhesive 1 with multiple air vents 13 is used for bonding and fixing to the display panel 30. It should be noted that in this embodiment, the circumferential frame of the backlight module 20 is bonded and fixed to the circumferential frame of the display panel 30 by connecting tape 10, ensuring the stability and reliability of the bonding and fixing of the backlight module 20 and the display panel 30.

[0056] Figure 5 This is a schematic diagram of the first process of processing the connecting tape 10 according to Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the second process of processing the connecting tape 10 according to Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the third process of processing the connecting tape 10 according to Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the fourth process of processing the connecting tape 10 according to Embodiment 1 of this utility model; Figure 9 This is a schematic diagram of the fifth process of processing the connecting tape 10 according to Embodiment 1 of this utility model. (Refer to...) Figures 5-9 As shown, when processing the connecting tape 10, firstly as follows... Figure 5 As shown, the foam adhesive 1 is adsorbed and fixed by the first fixture 100, and the adsorbed and fixed foam adhesive 1 is heated by the first fixture 100; then as... Figure 6 As shown, an anti-adhesion film 2 is fitted onto each of the insertion teeth 210 spaced apart on the second fixture 200, and the second fixture 200 heats each anti-adhesion film 2; then as... Figure 7 As shown, the insertion teeth 210 on the second fixture 200 are inserted into the foam adhesive 1, thereby processing the air cavity 11 and air hole 12 on the foam adhesive 1, and ensuring that the anti-adhesion film 2 on each insertion tooth 210 adheres to the cavity wall of the corresponding air cavity 11 under the action of high temperature; then, as shown Figure 8As shown, the second fixture 200 is removed from the foam adhesive 1, and the anti-adhesion film 2 on each insertion tooth 210 adheres to the corresponding inflation cavity 11; then as shown... Figure 9 As shown, the entire foam adhesive 1 is cut along the dotted line in the figure, and each cut foam adhesive 1 is deburred and straightened; then, each air vent 13 is processed on each cut foam adhesive 1; finally, an adhesive is coated on the outer surface of the foam adhesive 1 and a release film 3 is attached. It should be noted that the specific structure and heating principle of the first fixture 100 and the second fixture 200 are existing technologies and will not be described in detail here.

[0057] Example 2

[0058] Figure 10 This is a cross-sectional view of the connecting tape 10 provided in Embodiment 2 of this utility model; Figure 11 This is a partial structural cross-sectional view of the display device provided in Embodiment 2 of this utility model. The connecting tape 10 provided in this embodiment is basically the same as that in Embodiment 1, except that the connecting tape 10 provided in this embodiment differs from that in Embodiment 1 in that:

[0059] like Figure 10 and Figure 11 As shown, in this embodiment, multiple air vents 13 communicating with the inflation chamber 11 are arrayed on both opposite sides of the foam adhesive 1. Specifically, the sides of the foam adhesive 1 with the air vents 13 are respectively bonded and fixed to the display panel 30 and the backlight module 20. This arrangement not only facilitates the removal of the display panel 30 from the foam adhesive 1, but also facilitates the removal of the backlight module 20 from the foam adhesive 1, making it easy to replace with new connecting tape 10 to achieve the bonding and fixing between the display panel 30 and the backlight module 20.

[0060] The display device provided in this embodiment, by applying the above-mentioned connecting tape 10, not only makes it easy to remove the display panel 30 from the foam adhesive 1, but also makes it easy to remove the backlight module 20 from the foam adhesive 1, and makes it easy to replace the new connecting tape 10 to achieve the bonding and fixing between the display panel 30 and the backlight module 20.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A connecting tape, characterized by The connecting adhesive tape is used for connecting a backlight module (20) and a display panel (30), and comprises: A foam adhesive (1) is internally provided with an air-filled cavity (11), and is further provided with an air-filled hole (12) in communication with the air-filled cavity (11), and is arrayed on at least one side with a plurality of air outlet holes (13) in communication with the air-filled cavity (11).

2. The connecting tape according to claim 1, wherein The connecting adhesive tape further comprises: An anti-adhesion film (2) is arranged on the cavity wall of the air-filled cavity (11), and the air outlet hole (13) penetrates through the anti-adhesion film (2).

3. The connecting tape according to claim 2, wherein The connecting strength between the anti-adhesion film (2) and the cavity wall of the air-filled cavity (11) is 80gf / 25mm-200gf / 25mm.

4. The connecting tape according to claim 1, wherein The inner diameter size of the air-filled hole (12) is 0.1mm-0.6mm.

5. The connecting tape according to any one of claims 1 to 4, characterized in that The foam adhesive (1) is arrayed on both opposite sides with a plurality of air outlet holes (13) in communication with the air-filled cavity (11).

6. The connecting tape according to any one of claims 1 to 4, wherein The wall thickness size of the foam adhesive (1) is 0.05mm-0.2mm.

7. The connecting tape according to any one of claims 1 to 4, wherein The connecting adhesive tape further comprises: A release film (3) is adhered to the outer surface of the foam adhesive (1).

8. The connecting tape according to claim 7, wherein The release film (3) comprises a connected hand-holding portion and a pasting portion, the pasting portion is attached to the outer surface of the foam adhesive (1), and the hand-holding portion is extended out of the foam adhesive (1).

9. A display device, characterized by comprising: The connecting adhesive tape is used for connecting a backlight module (20) and a display panel (30), and comprises:

10. The display device according to claim 9, wherein The connecting adhesive tape is used for connecting a backlight module (20) and a display panel (30), and comprises: The connecting adhesive tape is used for connecting a backlight module (20) and a display panel (30), and comprises: The connecting adhesive tape is used for connecting a backlight module (20) and a display panel (30), and comprises:

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