Composite auxiliary material for AMOLED module

Abstract

The utility model discloses a composite auxiliary material used for an AMOLED module group, comprising a foam layer, a first glue layer arranged on the upper surface of the foam layer, a PET layer arranged on the upper surface of the first glue layer, a second glue layer arranged on the upper surface of the PET layer, a release film layer arranged on the upper surface of the second glue layer, and an adhesive layer arranged on the upper surface of the release film layer. The release film layer and the second adhesive layer are provided with a raised conductive cavity, a metal film is arranged in the conductive cavity, and the metal film is bonded with the release film layer through conductive adhesive. According to the composite auxiliary material for the AMOLED module, different functional layers are integrated together, so that the material cost is effectively reduced, the labor cost is also reduced, and one operator can complete the pasting operation of the auxiliary material. The integrated composite auxiliary material has better overall structural strength and is not prone to deformation, the anti-falling performance of the AMOLED module is effectively improved, and the AMOLED module is particularly suitable for wearable products such as smart bracelets and smart watches.

Description

Technical Field

[0001] The utility model relates to a composite auxiliary material, more precisely, a composite auxiliary material for an AMOLED module. Background Art

[0002] The market has increasingly high requirements for AMOLED smart watches, which not only need to meet the anti-static standards of various indicators, but also need to resist falling and other requirements. This has led to the need to apply a lot of auxiliary materials on the AMOLED display module. Adding these auxiliary materials not only increases the material cost but also the labor cost, resulting in an increasingly high cost of the AMOLED display module. For example, the existing process generally requires 5 auxiliary materials with different functions and 5 operators to perform the material application operation.

[0003] Chinese invention patent document CN106848081B discloses a flexible AMOLED display screen, including a display area and an IC bonding area located on one side of the display area; a flexible substrate is provided in the IC bonding area, a plurality of bonding terminals are provided on the flexible substrate, a conductive adhesive film layer covering the plurality of bonding terminals is provided on the flexible substrate, and an IC chip is provided on the conductive adhesive film layer; the conductive adhesive film layer includes multiple layers of conductive thin films and multiple layers of insulating thin films that are sequentially stacked and alternately arranged along the extending direction of the IC chip, and the multiple layers of conductive thin films conduct the IC chip and the plurality of bonding terminals. The width of the bonding terminal is at least 30 μm; the thickness of each conductive thin film and the insulating thin film is 3-5 μm. Both the conductive thin film and the insulating thin film are made of a viscous polymer material. The material of the flexible substrate is polyimide. The invention also provides a manufacturing method of the conductive adhesive film layer, including the following steps: Step S1, provide multiple layers of conductive thin films and multiple layers of insulating thin films, repeatedly stack and press the conductive thin films and the insulating thin films alternately, so that the multiple layers of conductive thin films and the multiple layers of insulating thin films are sequentially stacked and alternately arranged to form a conductive adhesive film layer; Step S2, stretch the conductive adhesive film layer in a direction perpendicular to its film layer thickness, so that the thicknesses of the conductive thin film and the insulating thin film in the conductive adhesive film layer are reduced to the required values; Step S3, cut the stretched conductive adhesive film layer in the thickness direction of the conductive adhesive film layer to a size that matches flexible AMOLED display screens of different specifications. The manufacturing method of the conductive adhesive film layer further includes: Step S4, attach protective films to both sides of the cut conductive adhesive film layer. Both the conductive thin film and the insulating thin film are made of a viscous polymer material. In Step S2, the conductive adhesive film layer is stretched by winding it around a first film guiding roller, a second film guiding roller, a third film guiding roller, and a fourth film guiding roller arranged in sequence. The second film guiding roller and the third film guiding roller are at the same first height, the first film guiding roller and the fourth film guiding roller are at the same second height higher than the first height, the first film guiding roller and the third film guiding roller rotate clockwise, and the second film guiding roller and the fourth film guiding roller rotate counterclockwise. After being stretched by Step S2, the thicknesses of the conductive thin film and the insulating thin film in the conductive adhesive film layer are both reduced to 3-5 μm. In Step S3, a laser is used to cut the stretched conductive adhesive film layer.

[0004] Obviously, in the IC bonding area of the invention, a flexible substrate, a plurality of bonding terminals, a conductive adhesive film layer, and an IC chip are sequentially arranged from bottom to top. The conductive adhesive film layer includes multiple conductive thin films and multiple insulating thin films that are sequentially stacked and alternately arranged along the extending direction of the IC chip. The multiple conductive thin films replace the dispersed conductive particles in the existing anisotropic conductive adhesive film that must be subjected to a large pressure to break, so as to conduct the IC chip and the plurality of bonding terminals. Therefore, when performing the bonding and pressing process, a smaller pressing pressure can be used to complete the bonding of the IC chip and the bonding terminals, without damaging the flexible substrate, avoiding the generation of crack defects in the flexible substrate during the bonding and pressing process as in the prior art. At the same time, since the IC chip and the plurality of bonding terminals are conducted through the conductive thin film without conductive particles, it can also avoid the problem that the IC chip and the bonding terminals cannot be conducted due to the non-breaking of the conductive particles as in the prior art. However, this structure cannot solve the existing auxiliary material problem. Summary of the Utility Model

[0005] Based on this, in order to solve the above technical problems, it is necessary to provide a composite auxiliary material for an AMOLED module. The composite auxiliary material for an AMOLED module includes a foam layer. A first adhesive layer is provided on the upper surface of the foam layer. A PET layer is provided on the upper surface of the first adhesive layer. A second adhesive layer is provided on the upper surface of the PET layer. A release film layer is provided on the upper surface of the second adhesive layer. A raised conductive cavity is provided between the release film layer and the second adhesive layer. A metal film is provided in the conductive cavity. The metal film is adhesively connected to the release film layer through a conductive adhesive. This composite auxiliary material for an AMOLED module integrates different functional layers, effectively reducing both the material cost and the labor cost. An operator can complete the application operation of the auxiliary material. In addition, the integrated composite auxiliary material has better overall structural strength and is not easily deformed, effectively improving the anti-drop performance of the AMOLED module, and is particularly suitable for wearable products such as smart bracelets and smart watches.

[0006] In order to solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] A composite auxiliary material for an AMOLED module, characterized in that the composite auxiliary material for an AMOLED module includes a foam layer. A first adhesive layer is provided on the upper surface of the foam layer. A PET layer is provided on the upper surface of the first adhesive layer. A second adhesive layer is provided on the upper surface of the PET layer. A release film layer is provided on the upper surface of the second adhesive layer. A raised conductive cavity is provided between the release film layer and the second adhesive layer. A metal film is provided in the conductive cavity. The metal film is adhesively connected to the release film layer through a conductive adhesive.

[0008] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the metal film is a nickel film.

[0009] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the thickness of the metal film is 0.05 mm to 0.15 mm.

[0010] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the thickness of the metal film is 0.1 mm.

[0011] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the conduction resistance of the metal film is less than 5 ohms.

[0012] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, a number of corrugations are provided on the upper surface of the metal film.

[0013] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the corrugations are serrated.

[0014] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, a fitting edge is provided on the upper surface of the metal film.

[0015] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the size of the fitting edge is adapted to the conductive adhesive.

[0016] As a preferred embodiment of the composite auxiliary material for an AMOLED module provided by the present utility model, the hardness of the fitting edge is greater than that of the metal film.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] The present utility model provides a composite auxiliary material for an AMOLED module. This composite auxiliary material for an AMOLED module integrates different functional layers, effectively reducing both the material cost and the labor cost. One operator can complete the application operation of the auxiliary material. In addition, the integrated composite auxiliary material has better overall structural strength, is not easily deformed, and effectively improves the anti-drop performance of the AMOLED module, making it particularly suitable for wearable products such as smart bracelets and smart watches.

[0019] In addition, a plurality of corrugations may be provided on the upper surface of the metal film. The corrugations are serrated. By using the serrated corrugations, the adhesion between the metal film and the conductive adhesive can be effectively improved, and the detachment of the metal film from the conductive adhesive can be effectively prevented, thereby avoiding the failure of electrical connection.

[0020] In addition, a fitting edge may be provided on the upper surface of the metal film. The size of the fitting edge is adapted to the conductive adhesive. The hardness of the fitting edge is greater than that of the metal film. By using the fitting edge, the conductive adhesive can be completely wrapped, thereby effectively improving the adhesion between the conductive adhesive and the metal film. In addition, due to the limitation of the fitting edge, the displacement of the conductive adhesive can be prevented, thereby improving the reliability of the electrical connection. Brief Description of the Drawings

[0021] In order to more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic diagram of the hierarchical structure of the composite auxiliary material for the AMOLED module of the present invention;

[0023] Figure 2 For Figure 1 It is a schematic diagram of another embodiment of the metal film of the composite auxiliary material for the AMOLED module in

[0024] Figure 3 For Figure 2 It is a detailed enlarged schematic diagram of the A area of the metal film in

[0025] Figure 4 For Figure 1 It is a schematic diagram of another embodiment of the metal film of the composite auxiliary material for the AMOLED module in

[0026] Figure 5 For Figure 4 It is a detailed enlarged schematic diagram of the B area of the metal film in

[0027] The markings in the drawings are explained as follows: 1. Foam layer; 2. First adhesive layer; 3. PET layer; 4. Second adhesive layer; 5. Release film layer; 6. Conductive cavity; 7. Metal film; 71. Corrugation; 72. Fitting edge; 8. Conductive adhesive. Detailed Embodiments

[0028] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0029] As described in the background art, for the existing technology of AMOLED modules, the market has higher and higher requirements for AMOLED smart watches. It not only needs to meet the anti-static standards of various indicators, but also has requirements such as anti-drop. This has led to the need to paste a lot of auxiliary materials on the AMOLED display module. Adding these auxiliary materials not only increases the material cost but also increases the labor cost, resulting in an increasingly high cost of the AMOLED display module. For example, the existing process generally requires 5 different functional auxiliary materials and 5 operators to perform the pasting operation.

[0030] To solve this technical problem, the present utility model provides a composite auxiliary material for an AMOLED module, which includes a foam layer 1. A first adhesive layer 2 is provided on the upper surface of the foam layer 1. A PET layer 3 is provided on the upper surface of the first adhesive layer 2. A second adhesive layer 4 is provided on the upper surface of the PET layer 3. A release film layer 5 is provided on the upper surface of the second adhesive layer 4. A raised conductive cavity 6 is provided between the release film layer 5 and the second adhesive layer 4. A metal film 7 is provided in the conductive cavity 6. The metal film 7 is adhesively connected to the release film layer 5 through a conductive adhesive 8.

[0031] Through the above structural design, the composite auxiliary material for the AMOLED module integrates different functional layers, effectively reducing both the material cost and the labor cost. One operator can complete the pasting operation of the auxiliary material. In addition, the integrated composite auxiliary material has better overall structural strength, is not easily deformed, and effectively improves the anti-drop performance of the AMOLED module, which is particularly suitable for wearable products such as smart bracelets and smart watches.

[0032] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be elaborated in detail below in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] As Figure 1 shown, the composite auxiliary material for the AMOLED module includes a foam layer 1. A first adhesive layer 2 is provided on the upper surface of the foam layer 1. A PET layer 3 is provided on the upper surface of the first adhesive layer 2. A second adhesive layer 4 is provided on the upper surface of the PET layer 3. A release film layer 5 is provided on the upper surface of the second adhesive layer 4. A raised conductive cavity 6 is provided between the release film layer 5 and the second adhesive layer 4. A metal film 7 is provided in the conductive cavity 6. The metal film 7 is adhesively connected to the release film layer 5 through a conductive adhesive 8.

[0036] It should be noted that the metal film 7 is a nickel film.

[0037] In addition, the thickness of the metal film 7 is 0.05 mm to 0.15 mm. Preferably, the thickness of the metal film 7 is 0.1 mm.

[0038] In addition, the conduction resistance of the metal film 7 is less than 5 ohms.

[0039] The working mode of this embodiment will be described below.

[0040] The composite auxiliary material for the AMOLED module integrates different functional layers, which not only effectively reduces the material cost but also reduces the labor cost. One operator can complete the application operation of the auxiliary material. In addition, the integrated composite auxiliary material has better overall structural strength and is not easily deformed, effectively improving the anti-drop performance of the AMOLED module, and is particularly suitable for wearable products such as smart bracelets and smart watches.

[0041] As Figure 2 and Figure 3 shown, the composite auxiliary material for the AMOLED module provided in Embodiment 1 is further optimized. Specifically, a plurality of corrugations 71 are provided on the upper surface of the metal film 7.

[0042] It should be noted that the corrugations 71 are serrated.

[0043] The working mode of this embodiment will be described below.

[0044] By using the serrated corrugations 71, the adhesion between the metal film 7 and the conductive adhesive 8 can be effectively improved, and the detachment of the metal film 7 from the conductive adhesive 8, which may cause electrical connection failure, can be effectively prevented.

[0045] As Figure 4 and Figure 5As shown in the figure, the composite auxiliary material for the AMOLED module provided in Embodiment 1 or 2 is further optimized. Specifically, a fitting edge 72 is provided on the upper surface of the metal film 7.

[0046] It should be noted that the size of the fitting edge 72 is adapted to the conductive adhesive 8.

[0047] In addition, the hardness of the fitting edge 72 is greater than that of the metal film 7.

[0048] The working mode of this embodiment will be described below.

[0049] By using the fitting edge 72, the conductive adhesive 8 can be completely wrapped, thereby effectively improving the adhesion between the conductive adhesive 8 and the metal film 7. In addition, due to the limitation of the fitting edge 72, the displacement of the conductive adhesive 8 can be prevented, thereby improving the reliability of the electrical connection.

[0050] The terms "coupling" and "coupled" involved in the embodiments of the present application should be understood in a broad sense. For example, it can refer to a direct physical connection, or an indirect connection realized through electronic devices, such as a connection realized through resistors, inductors, capacitors or other electronic devices.

[0051] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0052] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields is equally within the scope of the patent protection of the present application.

Claims

1. A composite auxiliary material for an AMOLED module, characterized in that: The composite auxiliary material for an AMOLED module comprises a foam layer (1); a first adhesive layer (2) is provided on the upper surface of the foam layer (1); a PET layer (3) is provided on the upper surface of the first adhesive layer (2); a second adhesive layer (4) is provided on the upper surface of the PET layer (3); a release film layer (5) is provided on the upper surface of the second adhesive layer (4); a raised conductive cavity (6) is provided between the release film layer (5) and the second adhesive layer (4); a metal film (7) is provided in the conductive cavity (6); and the metal film (7) is bonded to the release film layer (5) via a conductive adhesive (8).

2. The composite auxiliary material for AMOLED module according to claim 1, characterized in that: The metal film (7) is a nickel film.

3. The composite auxiliary material for AMOLED module according to claim 2, characterized in that: The thickness of the metal film (7) is 0.05 mm to 0.15 mm.

4. The composite auxiliary material for AMOLED module according to claim 3, characterized in that: The thickness of the metal film (7) is 0.1 mm.

5. The composite auxiliary material for AMOLED module according to claim 3, characterized in that: The on-resistance of the metal film (7) is less than 5 ohms.

6. The composite auxiliary material for AMOLED module according to claim 1, characterized in that: A plurality of corrugations (71) are provided on the upper surface of the metal film (7).

7. The composite auxiliary material for AMOLED module according to claim 6, characterized in that: The corrugations (71) are sawtooth-shaped.

8. The composite auxiliary material for AMOLED module according to claim 1, characterized in that: A fitting edge (72) is provided on the upper surface of the metal film (7).

9. The composite auxiliary material for AMOLED module according to claim 8, characterized in that: The size of the fitting edge (72) is compatible with the conductive adhesive (8).

10. The composite auxiliary material for AMOLED module according to claim 8, characterized in that: The hardness of the fitting edge (72) is greater than that of the metal film (7).

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