Composite protective paper, backlight module and display

Abstract

The invention discloses composite protective paper, a backlight module and a display, and the composite protective paper comprises a black aluminum foil mylar shielding film which is provided with a viscous and conductive first surface and a non-viscous and non-conductive second surface; the heat insulation film is arranged on a partial area of the first surface of the black aluminum foil mylar shielding film and is used for blocking heat in the vertical direction; the nanometer heat dissipation film is arranged above the heat insulation film and used for diffusing heat in the horizontal direction; the first release film is arranged above the nanometer heat dissipation film and can cover the nanometer heat dissipation film, the side face of the heat insulation film and the first face of the black aluminum foil mylar shielding film. The composite protective paper is applied to the IC position of the display, heat generated when the IC works is uniformly dissipated in the plane direction through the nano heat dissipation film, and the heat is blocked in the vertical direction through the heat insulation film, so that the heat transferred to a display screen or a cover plate screen on the front side is reduced, and the display performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of protective paper, and particularly to a composite protective paper, a backlight module and a display. Background Art

[0002] In vehicle-mounted liquid crystal displays, there are relatively high requirements for static electricity and surface temperature rise. When the display is subjected to electromagnetic interference, there may be problems such as screen flashing, dead screen, restarting, or even damage. When the surface temperature of the display is too high, it will affect the customer experience and the lifespan of the display. There is an urgent need to provide a protective paper structure that can improve both the static electricity problem and the temperature rise problem, thereby enhancing the lifespan of the display and the user experience. Summary of the Invention

[0003] In order to at least solve the above technical problems, an object of the present invention is to provide a composite protective paper, a backlight module and a display, which solve the temperature rise problem of the module, are applied to a display screen, and reduce abnormal display phenomena such as screen flashing, color distortion, and system crash.

[0004] To achieve the above object, on the one hand, the present invention provides a composite protective paper, including:

[0005] A black aluminum foil mylar shielding film, which has a sticky and conductive first side and a non-sticky and non-conductive second side;

[0006] A heat insulation film, disposed on a partial area of the first side of the black aluminum foil mylar shielding film, for blocking heat in the vertical direction;

[0007] A nano heat dissipation film, disposed above the heat insulation film, for diffusing heat in the horizontal direction;

[0008] A first release film, disposed above the nano heat dissipation film, capable of covering the sides of the nano heat dissipation film and the heat insulation film, and the first side of the black aluminum foil mylar shielding film.

[0009] Further, it further includes a second release film;

[0010] The black aluminum foil mylar shielding film has a main body and a protruding block located on one side of the main body; the heat insulation film and the nano heat dissipation film are at least disposed on a partial adhesive surface of the main body; the first release film can cover the exposed adhesive surface on the main body; the second release film is disposed on the adhesive surface of the protruding block.

[0011] Further, on the main body, the width on both sides of the heat insulation film is greater than the sum of the thicknesses of the heat insulation film and the nano heat dissipation film.

[0012] Further, the nano heat dissipation film includes a thermally conductive adhesive, a heat spreading layer, and a nano heat dissipation layer stacked in sequence.

[0013] Furthermore, the heat insulation film includes a thermally conductive adhesive, a heat - equalizing layer, and an aerogel polymer composite closed - cell foaming layer stacked in sequence.

[0014] On the other hand, the present invention also provides a backlight module, comprising:

[0015] A rear iron frame;

[0016] A backlight adhesive holder disposed within the rear iron frame;

[0017] An IC with silicone, disposed outside the backlight adhesive holder;

[0018] A composite protection paper disposed on the silicone of the IC; the composite protection paper includes a black aluminum foil mylar shielding film, a heat insulation film, and a nano - heat dissipation film stacked and adhered in sequence.

[0019] Furthermore, it further includes an upper glass and a lower glass that are mutually adhered, an upper polarizer close to the upper glass, and a lower polarizer close to the lower glass;

[0020] The IC is disposed on one side of the upper glass and located on a partial area of the lower glass;

[0021] The composite protection paper is adhered to the surfaces of the upper glass and the lower glass, and the heat insulation film and the nano - heat dissipation film cover the silicone of the IC.

[0022] Furthermore, the composite protection paper has a main body and a protruding block located on one side of the main body. The main body is used for adhering to the surfaces of the upper glass and the lower glass, and the protruding block is used for being bent and adhered to the rear iron frame.

[0023] Even further, a thermally conductive graphite sheet is disposed near the light source inside the backlight adhesive holder; and / or

[0024] A thermally conductive graphite sheet is disposed on the back of the IC.

[0025] On the other hand, the present invention also provides a display, the display comprising:

[0026] The backlight module as described above;

[0027] A display panel disposed on the backlight module.

[0028] The composite protective paper of the embodiment of the present invention includes: a black aluminum foil mylar shielding film, which has a first side with adhesiveness and conductivity and a second side without adhesiveness and non-conductivity; a heat insulation film disposed on a partial area of the first side of the black aluminum foil mylar shielding film; a nano heat dissipation film disposed above the heat insulation film; a first release film disposed above the nano heat dissipation film and covering the side surfaces of the nano heat dissipation film and the heat insulation film, and the first side of the black aluminum foil mylar shielding film. The composite protective paper is applied to the IC position of a display, and the heat generated during the operation of the IC is evenly dissipated in the plane direction through the nano heat dissipation film, and the heat is blocked in the vertical direction through the heat insulation film, thereby reducing the heat transfer to the front display screen or cover plate screen and improving the display performance. Brief Description of the Drawings

[0029] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and together with the embodiments of the present invention, are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0030] Figure 1 is a side schematic view of the composite protective paper of the embodiment of the present invention;

[0031] Figure 2 is a front schematic view of the composite protective paper of the embodiment of the present invention;

[0032] Figure 3 is a back schematic view of the composite protective paper of the embodiment of the present invention;

[0033] Figure 4 is a schematic view of the stacked structure of the nano heat dissipation film of the embodiment of the present invention;

[0034] Figure 5 is a schematic view of the stacked structure of the heat insulation layer of the embodiment of the present invention;

[0035] Figure 6 is a schematic view of the composite protective paper of the embodiment of the present invention attached to the front of the FOG;

[0036] Figure 7 is a side sectional view of the composite protective paper of the embodiment of the present invention attached to the FOG;

[0037] Figure 8 is a back schematic view of the FOG of the embodiment of the present invention;

[0038] Figure 9 is a schematic view of the composite protective paper of the embodiment of the present invention applied to the TLI;

[0039] Figure 10 is a front schematic view of the composite protective paper of the embodiment of the present invention applied to the backlight module;

[0040] Figure 11 is a schematic diagram of the side cutting and partial enlargement of the composite protective paper according to an embodiment of the present invention applied to a backlight module;

[0041] Figure 12 is a schematic diagram of the back side of the composite protective paper according to an embodiment of the present invention applied to a backlight module. Detailed implementation manners

[0042] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0043] It should be understood that the various steps described in the method embodiments of the present invention can be executed in different orders and / or executed in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this regard.

[0044] As used herein, the term "comprising" and its variants are open-ended, that is, "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0045] It should be noted that the modifications of "one" and "a plurality" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more". "A plurality" should be understood as two or more.

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0047] An embodiment of the present invention provides a composite protective paper, including: a black aluminum foil mylar shielding film (EMI), which has a first side with adhesiveness and conductivity and a second side without adhesiveness and non-conductivity; a heat insulation film disposed on a partial area of the first side of the black aluminum foil mylar shielding film for blocking heat in the vertical direction; a nano heat dissipation film disposed above the heat insulation film for diffusing heat in the horizontal direction; a first release film disposed above the nano heat dissipation film and covering the side surfaces of the nano heat dissipation film, the side surfaces of the heat insulation film, and the first side of the black aluminum foil mylar shielding film.

[0048] Embodiment 1

[0049] Figure 1 This is a side view schematic diagram of the composite protective paper according to an embodiment of the present invention. Figure 2 This is a front view schematic diagram of the composite protective paper according to an embodiment of the present invention. Figure 3 This is a back view schematic diagram of the composite protective paper according to an embodiment of the present invention. Next, the composite protective paper according to the embodiment of the present invention will be described in detail in conjunction with Figures 1 to 3 , and the composite protective paper according to the embodiment of the present invention will be described in detail.

[0050] The composite protective paper according to the embodiment of the present invention includes a black aluminum foil mylar shielding film 101, a heat insulation film 102, and a nano heat dissipation film 103. The front surface of the black aluminum foil mylar shielding film 101 is non-adhesive and non-conductive, and the back surface is strongly adhesive and conductive, that is, the adhesive surface. The heat insulation film 102 and the nano heat dissipation film 103 are stacked and pasted on the back surface of the black aluminum foil mylar shielding film 101, and are disposed at least on a partial area of the back surface of the body 1011. In order to reserve enough adhesive surface for pasting on the product, the width of the black aluminum foil mylar shielding film 101 on both sides of the heat insulation film 102 should be greater than the sum of the thicknesses of the heat insulation film 102 and the nano heat dissipation film 103.

[0051] In order to protect the adhesive surface of the black aluminum foil mylar shielding film 101, a first release film 104 is disposed on the back surface of the black aluminum foil mylar shielding film 101, and the first release film 104 can cover the side surfaces of the nano heat dissipation film 103 and the heat insulation film 102 and the exposed adhesive surface on the body 1011 of the black aluminum foil mylar shielding film 101. In order to facilitate tearing, a first hand tear handle 106 is provided at one end of the first release film 104.

[0052] In the embodiment of the present invention, convex blocks 1012 are respectively provided at both ends of the black aluminum foil mylar shielding film 101, and a bendable area is provided on the convex blocks 1012 close to the body 1011 to achieve bending without damage. In order to protect the adhesive surface of the convex blocks 1012, a layer of second release film 105 is disposed on the adhesive surface of the convex blocks 1012. In order to facilitate tearing, a second hand tear handle 107 is provided on the second release film 105.

[0053] In some exemplary embodiments, the convex blocks 1012 can be disposed on any partial area on one side of the body 1011, and are not limited to being disposed at both ends of the black aluminum foil mylar shielding film 101.

[0054] The composite protective paper according to the embodiment of the present invention is applied to the IC position (Integrated Circuit, abbreviated as IC) of display structures such as FOG displays, TLI displays, and backlight modules. Since the back of the black aluminum foil mylar shielding film 101 has strong adhesive and is conductive, convex blocks 1012 are provided on both the left and right sides for being bent and pasted onto the rear iron frame of the backlight module. When static electricity accumulates on the surface area of the display cover plate, the static charge will be conducted to the FPC and the rear iron frame of the backlight module through the black aluminum foil mylar shielding film 101, thereby reducing the conduction of static charge to the display screen and avoiding display abnormalities such as screen flashing, screen distortion, and system freeze. Moreover, the adhesive surface of the black aluminum foil mylar shielding film 101 is independently provided with a first release film 104 and a second release film 105. When pasting, the first release film 104 is first torn off to facilitate alignment and pasting.

[0055] In the embodiment of the present invention, the nano heat dissipation film 103 is a heat conduction film whose in-plane thermal conductivity is much greater than the vertical thermal conductivity, and is used to evenly dissipate the heat generated when the IC works in the in-plane direction. The heat is blocked in the vertical direction through the heat insulation film 102, thereby reducing the heat transfer to the front display screen and the cover plate screen. It should be noted that since the nano heat dissipation film 103 and the heat insulation film 102 are relatively thick, when designing the nano heat dissipation film 103 and the heat insulation film 102, it is necessary to consider that the width should not exceed the backlight module to avoid the composite protective paper being too thick and difficult to bend.

[0056] In some exemplary embodiments, the nano heat dissipation film 103 includes a first thermal conductive adhesive 1031, a first heat dissipation layer 1032, and a nano heat dissipation layer 1033, as Figure 4 shown, and the three are stacked in sequence to form the nano heat dissipation film 103.

[0057] In some exemplary embodiments, the heat insulation film 102 includes a second thermal conductive adhesive 1021, a second heat dissipation layer 1022, and an aerogel polymer closed-cell foaming layer 1023, as Figure 5 shown, and the three are stacked in sequence to form the heat insulation film 102.

[0058] Figure 6 is a schematic diagram of the composite protective paper according to the embodiment of the present invention pasted on the front of the FOG, Figure 7 is a side sectional view of the composite protective paper according to the embodiment of the present invention pasted on the FOG, Figure 8 is a schematic diagram of the back of the FOG according to the embodiment of the present invention. The following will be combined with Figures 6 to 8Describe an application example of the composite protective paper of the embodiment of the present invention on FOG. FOG is the abbreviation of film on glass, which is a display structure that mounts an FPC (flexible printed circuit board) on a glass panel. In this example, the IC position 601 is close to the edge of the FOG, is disposed on one side of the upper glass 603 below the upper polarizer 602, and is above the lower glass 605 above the lower polarizer 604. When the composite protective paper 606 is pasted on the IC position 601 end below the FOG, first tear off the first release film 104 at the bottom layer of the composite protective paper 606, and paste the upper edge (away from the second release film 105) of the composite protective paper 606 along the upper glass 603 below the lower edge of the upper polarizer 602, noting that it cannot be pasted on the surface of the upper polarizer 602 and cannot exceed the left and right sides of the upper glass 603, that is, ensure that the main body 1011 of the above-mentioned black aluminum foil mylar shielding film 101 is respectively pasted on the surfaces of the upper glass 603 and the lower glass 605, and the heat insulation film 102 and the nano heat dissipation film 103 on the composite protective paper 606 cover above the IC position 601. When the IC position works, heat is generated, and the nano heat dissipation film 103 and the heat insulation film 102 on the composite protective paper will disperse and conduct the heat in a plane, and isolate the heat in the vertical direction, thereby reducing the temperature of the IC position 601 and the front display screen, meeting the customer requirements.

[0059] In some exemplary embodiments, a layer of silica gel 703 is disposed above the IC position 601.

[0060] In some exemplary embodiments, a thermal conductive graphite sheet is pasted below the back surface of the FOG to further improve the heat dissipation performance of the back surface of the FOG. As Figure 7 and Figure 8 shown, a thermal conductive graphite sheet 701 is pasted on the back surface of the IC position 601 to evenly distribute and dissipate the heat on the back surface of the IC position 601. Specifically, the thermal conductive graphite sheet 701 is attached along the lower surface of the lower glass 605 above the lower polarizer 604, and the UV glue 702 is filled in the vacancy at the bent portion. The thermal conductive graphite sheet 701 is pasted according to the shape of the lower polarizer 604, and cannot cover the surface of the lower polarizer 604, and the left and right sides cannot exceed the periphery of the FPC and the glass. The heat generated by the IC is evenly distributed in a two-dimensional plane on the back surface through the thermal conductive graphite sheet 701, and conducts heat evenly along two directions, thereby effectively transferring the heat. The larger the area of the thermal conductive graphite sheet 701, the better the heat dissipation effect.

[0061] Figure 9 is a schematic diagram of the application of the composite protective paper of the embodiment of the present invention to TLI. As Figure 9 shown, the above-mentioned composite protective paper is pasted above the IC position 601 at one end of the FOG901, and the FOG901 and the cover plate 902 are bonded through an optical adhesive OCA (a kind of adhesive) 903.

[0062] After the FOG901 and the cover plate 902 are bonded together by the optical adhesive OCA903, they are assembled into the backlight module. The black aluminum foil mylar shielding film 101 of the composite protective paper is bent and pasted on the rear iron frame 1201 of the backlight module to conduct electrostatic charges and improve the display performance. As Figures 10 to 12 shown, the second release film 105 on the bottom layer of the composite protective paper on the FOG901 is torn off, and the protruding blocks 1012 on both sides of the black aluminum foil mylar shielding film 101 are bent and pasted on the rear iron frame 1201 of the backlight module. When static electricity accumulates on the surface area of the cover plate 902 of the display, the static charges will be conducted to the FPC and the rear iron frame 1201 through the black aluminum foil mylar shielding film 101 of the composite protective paper, reducing the conduction of static charges to the TFT (liquid crystal screen), thereby avoiding display anomalies such as screen flashing, screen distortion, and system freeze.

[0063] In some exemplary embodiments, the above-mentioned backlight module further includes a backlight glue holder 1101, a light guide module 1102 (including a light guide plate and various optical films) and an LED lamp 1103 located inside the backlight glue holder 1101. A graphite sheet 1104 is pasted in a circle at a position on the inner side of the backlight glue holder 1101 close to the LED lamp 1103 to dissipate the heat of the LED lamp 1103. The LED lamp 1103 is the main heat source for generating heat in the backlight module.

[0064] In some exemplary embodiments, the thickness of the black aluminum foil mylar shielding film 101 is selected to be 0.05 mm, and the thicknesses of the nano heat dissipation film 103 and the heat insulation film 102 are both selected to be 0.1 mm to avoid problems of uneven display caused by interference when the cover plate 902 and the FOG901 are bonded.

[0065] The composite protective paper provided by the present invention is applied to the IC positions in structures such as backlight modules, FOGs, or TLI display screens, which can not only improve the electrostatic problem but also solve the temperature rise problem.

[0066] Example 2

[0067] Example 2 is a display. The display of the embodiment of the present invention includes the backlight module of the above embodiment and a display panel provided on the backlight module. The composite protective paper (including the black aluminum foil mylar shielding film, the heat insulation film, and the nano heat dissipation film of the above embodiment) is arranged at the IC of the backlight module, which improves the electrostatic problem of the display, solves the temperature rise problem of the display, and avoids display anomalies such as screen flashing, screen distortion, and system freeze.

[0068] Although the embodiments disclosed in the present invention are as described above, the content is only for the convenience of understanding the present invention and is not intended to limit the present invention. Any person skilled in the art within the scope of the present invention may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A composite protective paper, characterized in that: include: Black aluminum foil Mylar shielding film having an adhesive and conductive first side and a non-adhesive and non-conductive second side; A heat-insulating film, arranged on a portion of the first surface of the black aluminum foil Mylar shielding film, for blocking heat in a vertical direction; A nano heat dissipation film is arranged on the heat insulation film and is used to diffuse heat in a horizontal direction; The first release film is arranged on the nano heat dissipation film and can cover the nano heat dissipation film, the side surface of the thermal insulation film, and the first surface of the black aluminum foil Mylar shielding film.

2. The composite protective paper according to claim 1, characterized in that: Also included is a second release film; The black aluminum foil Mylar shielding film has a main body and a protruding block located on one side of the main body; the thermal insulation film and the nano heat dissipation film are at least arranged on a portion of the adhesive surface of the main body; the first release film can cover the exposed adhesive surface on the main body; the second release film is arranged on the adhesive surface of the protruding block.

3. The composite protective paper according to claim 2, characterized in that: The width of the main body at both sides of the thermal insulation film is greater than the sum of the thicknesses of the thermal insulation film and the nano heat dissipation film.

4. The composite protective paper according to claim 1, characterized in that: The nano heat dissipation film comprises a heat conductive adhesive, a heat uniformity layer and a nano heat dissipation layer which are stacked in sequence.

5. The composite protective paper according to claim 1, characterized in that: The thermal insulation film comprises a thermal conductive adhesive, a heat-leveling layer and an aerogel polymer closed-cell foaming layer which are stacked in sequence.

6. A backlight module, characterized in that: include: rear iron frame; A backlight glue frame is arranged in the rear iron frame; An IC with silicone rubber is arranged on the outside of the backlight rubber frame; The composite protective paper is arranged on the silica gel of the IC; the composite protective paper comprises a black aluminum foil Mylar shielding film, a heat insulation film and a nano heat dissipation film which are stacked and bonded in sequence.

7. The backlight module according to claim 6, characterized in that: It also includes an upper glass and a lower glass bonded to each other, and an upper polarizer close to the upper glass and a lower polarizer close to the lower glass; The IC is disposed on one side of the upper glass and is located on a partial area of ​​the lower glass; The composite protection paper is attached to the surfaces of the upper glass and the lower glass, and the heat insulation film and the nano heat dissipation film are covered on the silica gel of the IC.

8. The backlight module according to claim 7, characterized in that: The composite protective paper comprises a main body and a protruding block located on one side of the main body, the main body is used to be attached to the surfaces of the upper glass and the lower glass, and the protruding block is used to be attached to the rear iron frame after being bent.

9. The backlight module according to claim 6, characterized in that: A thermally conductive graphite sheet is arranged on the inner side of the backlight plastic frame near the light source; and / or A thermally conductive graphite sheet is disposed on the back of the IC.

10. A display, characterized in that: The display comprises: The backlight module according to any one of claims 6 to 9; The display panel is arranged on the backlight module.

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