Composite protective paper, backlight module and display

Abstract

The utility model 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 sticky and conductive first surface and a non-sticky 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; the nanometer heat dissipation film is arranged on the heat insulation film; and the first release film is arranged in the rest area of the first surface 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] This utility model relates to the field of protective paper technology, and in particular to a composite protective paper, a backlight module, and a display. Background Technology

[0002] Automotive LCD displays have high requirements for static electricity control and surface temperature rise. When the display is subjected to electromagnetic interference, it may experience screen flickering, screen freezes, restarts, or even damage. Excessive surface temperature of the display will affect the user experience and the lifespan of the display. There is an urgent need to provide a protective paper structure that can improve both static electricity control and temperature rise management, thereby extending the display's lifespan and improving the user experience. Summary of the Invention

[0003] In order to at least solve the above-mentioned technical problems, the purpose of this utility model is to provide a composite protective paper, a backlight module and a display, which solves the problem of temperature rise of the module and reduces the occurrence of display abnormalities such as screen flickering, screen distortion and system crashes when applied to the display screen.

[0004] To achieve the above objectives, this utility model provides a composite protective paper, comprising:

[0005] Black aluminum foil Mylar shielding film, which has an adhesive and conductive first side and a non-adhesive and non-conductive second side;

[0006] A heat insulation film is applied to a portion of the first surface of the black aluminum foil Mylar shielding film;

[0007] A nano heat dissipation film is applied to the heat insulation film;

[0008] The first release film is applied to the remaining area of ​​the first side of the black aluminum foil Mylar shielding film.

[0009] Furthermore, it also includes a second release film;

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

[0011] Furthermore, 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] Furthermore, the nano heat dissipation film comprises a thermally conductive adhesive, a heat homogenizing layer, and a nano heat dissipation layer stacked sequentially.

[0013] Furthermore, the heat insulation film comprises a thermally conductive adhesive, a heat-uniforming layer, and an aerogel polymer closed-cell foam layer stacked sequentially.

[0014] On the other hand, this utility model also provides a backlight module, including:

[0015] Rear iron frame;

[0016] A backlight frame is installed inside the rear metal frame;

[0017] An IC with silicone backing is disposed on the outside of the backlight housing;

[0018] A composite protective paper is disposed on the silicone of the IC; the composite protective paper includes a black aluminum foil Mylar shielding film, a heat insulation film and a nano heat dissipation film stacked and bonded together in sequence.

[0019] Furthermore, it also includes an upper glass and a lower glass that are bonded together, as well as an upper polarizer near the upper glass and a lower polarizer near the lower glass;

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

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

[0022] Furthermore, the composite protective paper has a body and a protrusion located on one side of the body. The body is used to adhere to the surfaces of the upper glass and the lower glass, and the protrusion is used to be bent and adhered to the rear iron frame.

[0023] Furthermore, a thermally conductive graphite sheet is disposed on the inner side of the backlight bracket near the light source; and / or

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

[0025] On the other hand, this utility model also provides a display, the display comprising:

[0026] The backlight module as described above;

[0027] The display panel is located on the backlight module.

[0028] The composite protective paper of this utility model embodiment includes: a black aluminum foil Mylar shielding film having an adhesive and conductive first side and a non-adhesive and non-conductive second side; a heat insulation film disposed on a portion of the first side of the black aluminum foil Mylar shielding film; a nano heat dissipation film disposed above the heat insulation film; and a first release film disposed on the remaining area of ​​the first side of the black aluminum foil Mylar shielding film. When applied to the IC slot of a display, the composite protective paper dissipates heat generated during IC operation evenly in the planar direction through the nano heat dissipation film, and blocks heat in the vertical direction through the heat insulation film, thereby reducing heat transfer to the front display screen or cover screen and improving display performance. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They, together with the embodiments of the present invention, serve to explain the present invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a side view of the composite protective paper according to an embodiment of the present utility model;

[0031] Figure 2 This is a front view of the composite protective paper according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the back of the composite protective paper according to an embodiment of this utility model;

[0033] Figure 4 This is a schematic diagram of the nano-heat dissipation film stacking structure according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the heat insulation layer stacking structure according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the composite protective paper being affixed to the front of the FOG according to an embodiment of this utility model;

[0036] Figure 7 This is a side cross-sectional view of the composite protective paper applied to FOG according to an embodiment of this utility model;

[0037] Figure 8 This is a schematic diagram of the back of the FOG according to an embodiment of the present invention;

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

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

[0040] Figure 11 This is a side-cut and partially enlarged schematic diagram of the composite protective paper applied to the backlight module according to an embodiment of this utility model;

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

[0042] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While 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. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0043] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "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". Definitions of other terms will be given in the description below.

[0044] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Multiple" should be understood as two or more.

[0045] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] This utility model provides a composite protective paper, comprising: a black aluminum foil Mylar shielding film (EMI) having an adhesive and conductive first side and a non-adhesive and non-conductive second side; a heat insulation film disposed on a portion of the first side of the black aluminum foil Mylar shielding film; a nano heat dissipation film disposed on the heat insulation film; and a first release film disposed on the remaining portion of the first side of the black aluminum foil Mylar shielding film.

[0047] Example 1

[0048] Figure 1 This is a side view of the composite protective paper according to an embodiment of the present invention. Figure 2 This is a front view of the composite protective paper according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the back of the composite protective paper according to an embodiment of this utility model. The following will be combined with... Figures 1 to 3The composite protective paper of the present invention will be described in detail below.

[0049] The composite protective paper of this embodiment includes a black aluminum foil Mylar shielding film 101, a heat insulation film 102, and a nano heat dissipation film 103. The front side of the black aluminum foil Mylar shielding film 101 is non-adhesive and non-conductive, while the back side is highly adhesive and conductive, i.e., the adhesive side. The heat insulation film 102 and the nano heat dissipation film 103 are stacked and pasted on the back side of the black aluminum foil Mylar shielding film 101, at least covering a portion of the back side of the main body 1011. To reserve sufficient adhesive surface for application to 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.

[0050] In order to protect the adhesive side of the black aluminum foil Mylar shielding film 101, a first release film 104 is provided on the adhesive side of the black aluminum foil Mylar shielding film 101.

[0051] In some exemplary embodiments, a first release film 104 is disposed on the adhesive surface of the nano heat dissipation film 103 and the black aluminum foil Mylar shielding film 101. The first release film 104 can cover the sides of the nano heat dissipation film 103 and the heat insulation film 102, as well as the exposed adhesive surface of the body 1011 of the black aluminum foil Mylar shielding film 101. For easy removal, the first release film 104 is provided with a first tear handle 106.

[0052] In this embodiment of the invention, the black aluminum foil Mylar shielding film 101 has protrusions 1012 at both ends, and the protrusions 1012 have bendable areas near the body 1011, allowing them to be bent without damage. To protect the adhesive surface of the protrusions 1012, a second release film 105 is applied to the adhesive surface of the protrusions 1012. To facilitate removal, the second release film 105 has a second tear handle 107.

[0053] In some exemplary embodiments, the protrusion 1012 can be disposed on any part of one side of the body 1011, and is not limited to being disposed at both ends of the black aluminum foil Mylar shielding film 101.

[0054] The composite protective paper of this utility model embodiment is applied to the IC (Integrated Circuit) slots of display structures such as FOG displays, TLI displays, and backlight modules. Because the back of the black aluminum foil Mylar shielding film 101 has strong adhesive and is conductive, protrusions 1012 are provided on both sides for bending and pasting onto the rear iron frame of the backlight module. When static electricity accumulates on the surface of the display cover, the static charge is conducted through the black aluminum foil Mylar shielding film 101 to the FPC and the rear iron frame of the backlight module, thereby reducing the conduction of static charge to the display screen and avoiding display abnormalities such as screen flickering, screen distortion, and system crashes. Furthermore, the adhesive side of the black aluminum foil Mylar shielding film 101 is independently provided with a first release film 104 and a second release film 105. During application, the first release film 104 is removed first for easy alignment and application.

[0055] In this embodiment of the invention, the nano heat dissipation film 103 is a heat-conducting film with a planar thermal conductivity much greater than its vertical thermal conductivity, used to uniformly dissipate the heat generated during IC operation in the planar direction. The heat insulation film 102 blocks heat in the vertical direction, thereby reducing heat transfer to the front display screen and cover screen. It should be noted that because the nano heat dissipation film 103 and the heat insulation film 102 are relatively thick, their width must not exceed that of the backlight module during design to avoid the composite protective paper being too thick to bend excessively.

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

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

[0058] Figure 6 This is a schematic diagram of the composite protective paper applied to the front of the FOG according to an embodiment of the present invention. Figure 7 This is a side cross-sectional view of the composite protective paper applied to FOG according to an embodiment of this utility model. Figure 8 This is a schematic diagram of the back of the FOG according to an embodiment of this utility model. The following will be combined with... Figures 6 to 8This section describes an example of the application of the composite protective paper in a FOG (Filmon Glass). FOG is an abbreviation for filmon glass, a display structure in which an FPC (Flexible Printed Circuit) is mounted on a glass panel. In this example, IC position 601 is located near the edge of the FOG, on one side of the upper glass 603 below the upper polarizer 602, and above the lower glass 605 above the lower polarizer 604. When attaching the composite protective paper 606 to the IC position 601 below the FOG, first peel off the first release film 104 at the bottom of the composite protective paper 606. Then, attach the upper edge of the composite protective paper 606 (away from the second release film 105) along the upper glass 603 below the upper polarizer 602. Note that it should not be attached to the surface of the upper polarizer 602, and should not extend beyond the left and right sides of the upper glass 603. This ensures that the body 1011 of the aforementioned black aluminum foil Mylar shielding film 101 is attached to the surfaces of the upper glass 603 and the lower glass 605 respectively, and that the heat insulation film 102 and the nano heat dissipation film 103 on the composite protective paper 606 cover the IC position 601. When the IC position operates, it generates heat. The nano heat dissipation film 103 and the heat insulation film 102 on the composite protective paper will dissipate and conduct the heat in a planar manner and isolate heat in the vertical direction, thereby reducing the temperature of the IC position 601 and the front display screen, meeting customer requirements.

[0059] In some exemplary embodiments, a layer of silicone 703 is disposed above IC bit 601.

[0060] In some exemplary embodiments, a thermally conductive graphite sheet is adhered to the underside of the FOG's back panel to further improve the heat dissipation performance of the FOG's back panel. For example... Figure 7 and Figure 8 As shown, a thermally conductive graphite sheet 701 is attached to the back of IC position 601 to evenly distribute and dissipate heat from the back of IC position 601. Specifically, the thermally conductive graphite sheet 701 is attached along the lower surface of the lower glass 605 above the lower polarizer 604, and UV adhesive 702 is filled into the gaps where bending occurs. The thermally conductive graphite sheet 701 is attached according to the shape of the lower polarizer 604, without covering the surface of the lower polarizer 604, and the left and right sides must not extend beyond the outer perimeter of the FPC and glass. The thermally conductive graphite sheet 701 evenly distributes the heat generated by the IC on a two-dimensional plane on the back, conducting heat evenly in two directions, thereby effectively transferring heat. The larger the area of ​​the thermally conductive graphite sheet 701, the better the thermal conductivity.

[0061] Figure 9 This is a schematic diagram of the composite protective paper applied to TLI according to an embodiment of the present invention, as shown below. Figure 9 As shown, the composite protective paper is attached above the IC position 601 at one end of FOG901, and FOG901 and cover plate 902 are bonded together by optical adhesive OCA (an adhesive) 903.

[0062] After FOG901 and cover plate 902 are bonded together with optical adhesive OCA903, they are assembled into the backlight module. A black aluminum foil Mylar shielding film 101, made of composite protective paper, is bent and attached to the rear iron frame 1201 of the backlight module to discharge static charge, thus improving display performance. Figures 10 to 12 As shown, the second release film 105 on the bottom layer of the composite protective paper on FOG901 is peeled off, and the protrusions 1012 on both sides of the black aluminum foil Mylar shielding film 101 are bent and attached to the back iron frame 1201 of the backlight module. When static electricity accumulates on the surface of the cover plate 902 of the display, the static charge will be conducted to the FPC and the back iron frame 1201 through the black aluminum foil Mylar shielding film 101 of the composite protective paper, reducing the conduction of static charge to the TFT (liquid crystal screen), thereby avoiding display abnormalities such as screen flickering, screen distortion, and system crashes.

[0063] In some exemplary embodiments, the backlight module further includes a backlight housing 1101, a light guide module 1102 (including a light guide plate and various optical films) and an LED lamp 1103 located inside the backlight housing 1101. A ring of graphite sheet 1104 is attached to the inner side of the backlight housing 1101 near the LED lamp 1103 to dissipate heat from the LED lamp 1103. The LED lamp 1103 is the main heat source for the backlight module.

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

[0065] The composite protective paper provided by this invention can be applied to IC positions in backlight modules, FOG or TLI displays, etc., which can improve the static electricity problem and solve the temperature rise problem.

[0066] Example 2

[0067] Example 2 is a display. The display of this embodiment includes the backlight module of the above embodiment and a display panel disposed on the backlight module. A composite protective paper (including the black aluminum foil Mylar shielding film, heat insulation film and nano heat dissipation film of the above embodiment) is provided at the IC of the backlight module, which improves the static electricity problem of the display, solves the temperature rise problem of the display, and avoids display abnormalities such as screen flickering, screen distortion and system crash.

[0068] Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A composite protective paper, characterized in that, include: Black aluminum foil Mylar shielding film, which has an adhesive and conductive first side and a non-adhesive and non-conductive second side; A heat insulation film is applied to a portion of the first surface of the black aluminum foil Mylar shielding film; A nano heat dissipation film is applied to the heat insulation film; The first release film is applied to the remaining area of ​​the first side of the black aluminum foil Mylar shielding film.

2. The composite protective paper according to claim 1, characterized in that, It also includes a second release film; The black aluminum foil Mylar shielding film has a body and a protrusion located on one side of the body; the heat insulation film and the nano heat dissipation film are at least disposed on a portion of the adhesive surface of the body; the first release film can cover the exposed adhesive surface on the body; the second release film is disposed on the adhesive surface of the protrusion.

3. The composite protective paper according to claim 2, characterized in that, 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.

4. The composite protective paper according to claim 1, characterized in that, The nano heat dissipation film comprises a thermally conductive adhesive, a heat homogenizing layer, and a nano heat dissipation layer stacked sequentially.

5. The composite protective paper according to claim 1, characterized in that, The heat insulation film comprises a thermally conductive adhesive, a heat-uniforming layer, and an aerogel polymer closed-cell foam layer stacked sequentially.

6. A backlight module, characterized in that, include: Rear iron frame; A backlight frame is installed inside the rear metal frame; An IC with silicone backing is disposed on the outside of the backlight housing; A composite protective paper is disposed on the silicone of the IC; the composite protective paper includes a black aluminum foil Mylar shielding film, a heat insulation film and a nano heat dissipation film stacked and bonded together in sequence.

7. The backlight module according to claim 6, characterized in that, It also includes an upper glass and a lower glass that are bonded to each other, as well as an upper polarizer near the upper glass and a lower polarizer near the lower glass; The IC is disposed on one side of the upper glass and located on a portion of the lower glass; The composite protective paper is adhered to the surfaces of the upper and lower glass, and the heat insulation film and the nano heat dissipation film cover the silicone of the IC.

8. The backlight module according to claim 7, characterized in that, The composite protective paper has a body and a protrusion located on one side of the body. The body is used to adhere to the surfaces of the upper glass and the lower glass, and the protrusion is used to be bent and adhered to the rear iron frame.

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

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

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