Backlight FPC (Flexible Printed Circuit) structure capable of preventing scratch

Abstract

The utility model discloses an anti-scratch backlight FPC structure which comprises a backlight module, the backlight module comprises shading glue and a backlight FPC, one end, facing the backlight FPC, of the shading glue extends to a front single-layer area of the backlight FPC, and the shading glue on the single-layer area is provided with a reinforcing structure for preventing scratch. The size of the reinforcing structure is equal to that of the single-layer area. The shading glue on the front face of the backlight extends to the single-layer area of the backlight FPC, a non-sticky PET film is additionally arranged at the upper end, the thickness of the PET film is 1-2 microns, the added shading glue and the PET film body are soft, the bending performance of the backlight FPC in the single-layer area is not affected, the tearing risk of the backlight FPC can be reduced, the problems of surface scratching and the like of the single-layer area of the backlight FPC can be avoided, and the service life of the backlight FPC is prolonged. The FPC can be prevented from being torn only by laying a layer of copper plate on the single-layer area, and the copper plate is in a grid shape and is composed of copper wires in the staggered direction, so that the copper filling amount can be reduced, the flexibility of the copper laying area is improved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a backlight FPC structure capable of preventing scratches. Background Art

[0002] like Figure 1 As shown in the figure, the backlight structure of a common LCD display module, when the backlight structure is assembled with the display module, the FPC of the backlight will be welded to the FPC of the display module, and bent to the back of the backlight together with the FPC of the display module, attached to the back of the backlight, so the bending area of ​​the backlight FPC should also be designed as a single layer to improve the bending flexibility. Due to the small size of the backlight FPC, the single-layer area is prone to tearing, surface scratches and other defects, which affects the yield and causes unnecessary production waste.

[0003] For example, the Chinese utility model patent (CN217739879U) discloses a backlight module, a touch module and an electronic device, including a backlight assembly, the backlight assembly including an anti-reflection film, a light source, and an iron frame; a flexible circuit board, the flexible circuit board including a first area, a bending area and a second area, the first area of ​​the flexible circuit board being arranged on the mounting surface of the light source; and a protective paper, the protective paper covering the first area and the bending area of ​​the flexible circuit board. The utility model extends the PET protective paper added to the bottom of the backlight front shading glue to the entire bending area of ​​the backlight FPC to prevent breakage, and can also protect the surface of the single-layer area of ​​the backlight FPC to avoid scratches.

[0004] However, when the present inventor implemented this device, he found the following defects: the protection is relatively simple and it is difficult to effectively prevent the backlight FPC from being scratched. Utility Model Content

[0005] Based on this, it is necessary to provide a scratch-proof backlight FPC structure to address the above-mentioned technical problems, extend the shading glue on the front of the backlight to the single-layer area of ​​the backlight FPC, and add a non-sticky PET film at the upper end. The thickness of the PET film is 1~2um. The added shading glue and the PET film body are soft, and do not affect the bending property of the backlight FPC in the single-layer area. The risk of tearing the backlight FPC can be reduced, and scratches on the surface of the single-layer area of ​​the backlight FPC can be avoided. Alternatively, only a layer of copper plate can be laid on the single-layer area to avoid tearing of the FPC. The copper plate is in a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, thereby increasing the product yield and saving production costs.

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

[0007] A backlight FPC structure that prevents scratches.

[0008] The scratch-proof backlight FPC structure specifically includes:

[0009] A backlight module, the backlight module includes a light-shielding glue and a backlight FPC, the light-shielding glue extends toward one end of the backlight FPC to a front single-layer area of ​​the backlight FPC, the light-shielding glue on the single-layer area is provided with a reinforcement structure for preventing scratches, and the size of the reinforcement structure is equal to the size of the single-layer area.

[0010] As a preferred implementation of the scratch-resistant backlight FPC structure provided by the utility model, the reinforcement structure is a non-sticky PET film.

[0011] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, the thickness of the reinforcement structure is 1-2 um.

[0012] As a preferred implementation of the scratch-resistant backlight FPC structure provided by the utility model, the reinforcement structure is a copper plate.

[0013] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, the surface shape of the reinforcement structure is any one of grid knurling, straight knurling, diamond knurling and reticulated knurling.

[0014] As a preferred implementation of the scratch-resistant backlight FPC structure provided by the utility model, the internal structure of the reinforcement structure is a hollow structure.

[0015] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, the thickness of the reinforcement structure is 2-3 um.

[0016] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, a back side reinforcement structure is provided on the back side of the backlight FPC.

[0017] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, the backlight module further includes an iron frame, a reflective film, a light guide plate, a diffusion adhesive, a lower brightness enhancement film and an upper brightness enhancement film from bottom to top.

[0018] As a preferred implementation of the scratch-proof backlight FPC structure provided by the utility model, an LED lamp is arranged on one side of the light guide plate, and a glue frame is arranged between the LED lamp and the iron frame.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The scratch-proof backlight FPC structure provided by the utility model extends the shading glue on the front side of the backlight to the single-layer area of ​​the backlight FPC, and adds a non-sticky PET film at the upper end, the thickness of the PET film is 1-2um, the added shading glue and the PET film body are soft, and do not affect the bending property of the backlight FPC in the single-layer area, and can reduce the risk of tearing the backlight FPC, and can also avoid problems such as scratches and scratches on the surface of the single-layer area of ​​the backlight FPC. Alternatively, only one layer of copper plate can be laid on the single-layer area to avoid tearing of the FPC. The copper plate adopts a grid shape, that is, it is composed of copper wires in staggered directions, and the filling amount of copper can be reduced to improve the softness of the copper-plated area, so that the product yield is increased and the production cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the prior art;

[0023] Figure 2 for Figure 1 Side view of

[0024] Figure 3 A schematic diagram of the structure of the backlight FPC structure that prevents scratches provided by the utility model (embodiment 1);

[0025] Figure 4 A schematic diagram of the structure of the backlight FPC structure that prevents scratches provided by the utility model (Example 2);

[0026] Figure 5 for Figure 4 Side view of.

[0027] The markings in the figure are as follows:

[0028] Light-shielding glue 1; backlight FPC 2; single-layer area 3; reinforcement structure 4; back reinforcement structure 5; iron frame 6; reflective film 7; light guide plate 8; diffusion glue 9; lower brightness enhancement film 10; upper brightness enhancement film 11; LED light 12; glue frame 13. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] As background technology, Figure 1 As shown, due to the small size of the backlight FPC 2, the single-layer area 3 is prone to tearing, surface scratches and other defects, thereby affecting the yield and causing unnecessary production waste.

[0031] In order to solve this technical problem, the utility model provides a backlight FPC2 structure that prevents scratches.

[0032] Specifically, please refer to Figure 3-5 The backlight FPC structure to prevent scratches specifically includes:

[0033] The backlight module includes a shading glue 1 and a backlight FPC 2. The shading glue 1 extends toward one end of the backlight FPC 2 to the front single-layer area 3 of the backlight FPC 2. The shading glue 1 on the single-layer area 3 is provided with a reinforcement structure 4 for preventing scratches. The size of the reinforcement structure 4 is equal to the size of the single-layer area 3.

[0034] The scratch-proof backlight FPC structure provided by the utility model extends the shading glue 1 on the front side of the backlight to the single-layer area 3 of the backlight FPC2, and adds a non-sticky PET film at the upper end, the thickness of the PET film is 1-2um, the added shading glue 1 and the PET film body are soft, do not affect the bending property of the backlight FPC2 in the single-layer area 3, can reduce the risk of tearing of the backlight FPC2, and can also avoid problems such as scratches and scuffs on the surface of the single-layer area 3 of the backlight FPC2. Alternatively, only one layer of copper plate may be laid on the single-layer area 3 to avoid tearing of the FPC. The copper plate adopts a grid shape, that is, it is composed of copper wires in staggered directions, which can reduce the filling amount of copper to improve the softness of this copper-plated area, increase the product yield, and save production costs.

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example 1

[0038] Please refer to Figure 3-5 A backlight FPC structure for preventing scratches includes a backlight module, the backlight module includes a shading glue 1 and a backlight FPC 2, the shading glue 1 extends toward one end of the backlight FPC 2 to a front single-layer area 3 of the backlight FPC 2, and a reinforcement structure 4 for preventing scratches is arranged on the shading glue 1 on the single-layer area 3, and the size of the reinforcement structure 4 is equal to the size of the single-layer area 3.

[0039] Through the above structural design, the shading glue 1 on the front of the backlight is extended to the single-layer area 3 of the backlight FPC2, and a non-sticky PET film is added at the upper end. The thickness of the PET film is 1~2um. The added shading glue 1 and the PET film body are soft and do not affect the bending property of the backlight FPC2 in the single-layer area 3. The risk of tearing of the backlight FPC2 can be reduced, and the surface scratches and scratches of the single-layer area 3 of the backlight FPC2 can be avoided. Alternatively, only a layer of copper plate can be laid on the single-layer area 3 to avoid FPC tearing. The copper plate adopts a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, thereby increasing the product yield and saving production costs.

[0040] Specifically, the reinforcing structure 4 is a non-adhesive PET film.

[0041] Through the above structural design, the PET film is a multifunctional protective film, which can be fully applied to the fields of plastics, metals, backlights, polarizers, IOT films, brightness enhancement films, diffusion films, etc. The functions of the PET film can be summarized as dustproof, scratch-proof, anti-static, light-transmitting and ventilating, etc. In this embodiment, the PET film is soft in body and does not affect the bending property of the backlight FPC2 in the single-layer area 3, which can reduce the risk of tearing the backlight FPC2 and avoid scratches and other problems on the surface of the single-layer area 3 of the backlight FPC2.

[0042] Specifically, the thickness of the reinforcement structure 4 is 1-2 um.

[0043] Through the above structural design, the reinforcement structure 4 of Example 1 is a PET film with a thickness of 1 um. The thickness is determined according to the length and width of the single-layer area 3 of the backlight FPC 2, which are equal in size. Example 2

[0044] The scratch-proof backlight FPC structure provided in Example 1 is further optimized. Specifically, Figure 4 As shown, the reinforcement structure 4 is a copper plate.

[0045] Through the above-mentioned structural design, the reinforcement structure 4 of Example 2 is a copper plate with good ductility, extremely high plasticity, high thermal conductivity and electrical conductivity, which can avoid FPC tearing. The shading glue 1 on the front of the backlight is extended to the single-layer area 3 of the backlight FPC2, and a non-sticky PET film is added to the upper end. The thickness of the PET film is 1~2um. The added shading glue 1 and the PET film body are soft and do not affect the bending property of the backlight FPC2 in the single-layer area 3. The risk of tearing the backlight FPC2 can be reduced, and the surface of the single-layer area 3 of the backlight FPC2 can be avoided. Problems such as scratches and scratches can also be avoided. Only one layer of copper plate can be laid on the single-layer area 3 to avoid FPC tearing. The copper plate adopts a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, increase the product yield, and save production costs.

[0046] Specifically, the surface shape of the reinforcement structure 4 is any one of grid knurling, straight knurling, diamond knurling and reticulated knurling.

[0047] Through the above structural design, the copper plate adopts grid knurling, which is composed of copper wires in staggered directions, which can reduce the amount of copper filling to improve the softness of the copper-plated area, increase the product yield and save production costs.

[0048] Specifically, the internal structure of the reinforcement structure 4 is a hollow structure.

[0049] Through the above structural design, the inner structure of the reinforcement structure 4 is a hollow structure, which can further reduce the weight and improve the softness.

[0050] Specifically, the thickness of the reinforcement structure 4 is 2-3 um.

[0051] Through the above-mentioned structural design, in this embodiment, the thickness of the reinforcement structure 4 is 2um, and it can also be 3um under different requirements. The shading glue 1 on the front of the backlight is extended to the single-layer area 3 of the backlight FPC2, and a non-sticky PET film is added at the upper end. The thickness of the PET film is 1~2um. The added shading glue 1 and the PET film body are soft and do not affect the bending property of the backlight FPC2 in the single-layer area 3. The risk of tearing of the backlight FPC2 can be reduced, and the surface scratches and scratches of the single-layer area 3 of the backlight FPC2 can be avoided. Alternatively, only a layer of copper plate can be laid on the single-layer area 3 to avoid FPC tearing. The copper plate adopts a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, thereby increasing the product yield and saving production costs. Example 3

[0052] The scratch-proof backlight FPC structure provided in Example 1 or 2 is further optimized, such as Figure 1-3 As shown, a back side reinforcing structure 5 is provided on the back side of the backlight FPC 2 .

[0053] Through the above structural design, a back reinforcement structure 5 is provided on the back of the single-layer area 3 of the backlight FPC 2. Considering the need to be bent and grounded to the iron frame, the back reinforcement structure 5 acts as a reinforcing plate to improve the conductive performance.

[0054] Specifically, the backlight module further includes an iron frame 6 , a reflective film 7 , a light guide plate 8 , a diffusion adhesive 9 , a lower brightness enhancement film 10 and an upper brightness enhancement film 11 in sequence from bottom to top.

[0055] Specifically, an LED lamp 12 is disposed on one side of the light guide plate 8 , and a plastic frame 13 is disposed between the LED lamp 12 and the iron frame 6 .

[0056] Through the above structural design, the shading glue 1 on the front of the backlight is extended to the single-layer area 3 of the backlight FPC2, and a non-sticky PET film is added at the upper end. The thickness of the PET film is 1~2um. The added shading glue 1 and the PET film body are soft and do not affect the bending property of the backlight FPC2 in the single-layer area 3. The risk of tearing of the backlight FPC2 can be reduced, and the surface scratches and scratches of the single-layer area 3 of the backlight FPC2 can be avoided. Alternatively, only a layer of copper plate can be laid on the single-layer area 3 to avoid FPC tearing. The copper plate adopts a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, thereby increasing the product yield and saving production costs.

[0057] The use process of the backlight FPC structure for preventing scratches provided by the utility model is as follows:

[0058] The light-shielding glue 1 on the front of the backlight is extended to the single-layer area 3 of the backlight FPC2, and a non-sticky PET film is added on the upper end. The thickness of the PET film is 1~2um. The added light-shielding glue 1 and the PET film body are soft and do not affect the bending property of the backlight FPC2 in the single-layer area 3. The risk of tearing the backlight FPC2 can be reduced, and the surface scratches and scratches of the single-layer area 3 of the backlight FPC2 can be avoided. Alternatively, only a layer of copper plate can be laid on the single-layer area 3 to avoid FPC tearing. The copper plate adopts a grid shape, which is composed of copper wires in staggered directions. The amount of copper filling can be reduced to improve the softness of this copper-plated area, thereby increasing the product yield and saving production costs.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A backlight FPC structure for preventing scratches, characterized in that: The backlight module comprises a backlight module, wherein the backlight module comprises a light shielding adhesive (1) and a backlight FPC (2), wherein one end of the light shielding adhesive (1) extending toward the backlight FPC (2) reaches a front single-layer region (3) of the backlight FPC (2), and a reinforcement structure (4) for preventing scratches is arranged on the light shielding adhesive (1) on the single-layer region (3), wherein the size of the reinforcement structure (4) is equal to the size of the single-layer region (3).

2. The scratch-proof backlight FPC structure according to claim 1, characterized in that: The reinforcement structure (4) is a non-adhesive PET film.

3. The scratch-proof backlight FPC structure according to claim 2, characterized in that: The thickness of the reinforcement structure (4) is 1-2 um.

4. The scratch-proof backlight FPC structure according to claim 1, characterized in that: The reinforcement structure (4) is a copper plate.

5. The scratch-proof backlight FPC structure according to claim 4, characterized in that: The surface shape of the reinforcement structure (4) is any one of grid knurling, straight knurling, diamond knurling and reticulated knurling.

6. The scratch-proof backlight FPC structure according to claim 5, characterized in that: The internal structure of the reinforcement structure (4) is a hollow structure.

7. The scratch-proof backlight FPC structure according to claim 6, characterized in that: The thickness of the reinforcement structure (4) is 2-3 um.

8. The scratch-proof backlight FPC structure according to claim 1, characterized in that: A back side reinforcement structure (5) is provided on the back side of the backlight FPC (2).

9. The scratch-proof backlight FPC structure according to any one of claims 1 to 8, characterized in that: The backlight module further comprises, from bottom to top, an iron frame (6), a reflective film (7), a light guide plate (8), a diffusion adhesive (9), a lower brightness enhancement film (10) and an upper brightness enhancement film (11).

10. The scratch-proof backlight FPC structure according to claim 9, characterized in that: An LED lamp (12) is provided on one side of the light guide plate (8), and a glue frame (13) is provided between the LED lamp (12) and the iron frame (6).

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