Backlight structure that can prevent LED light displacement

Abstract

The utility model discloses a backlight structure capable of avoiding displacement of LED lamps, comprising: a backlight frame, a backlight LED light bar, a shading rubber pad and a graphite limiting piece, wherein a limited cavity is provided on the backlight frame; the backlight LED light bar comprises an LED lamp and an FPC, wherein the LED lamp is arranged on the FPC, a part of the FPC is pasted on the backlight frame, and the LED lamp faces the limited cavity; the shading rubber pad is partially attached to a side surface of the FPC away from the LED lamp; a part of the graphite limiting piece is attached to the back side of the backlight frame, and another part of the graphite limiting piece is extended from the bottom of the FPC and folded back to the front side of the backlight frame, so that another part of the graphite limiting piece is attached to the shading rubber pad. In this way, the position of the FPC lamp can be limited by the graphite limiting piece, so as to avoid the risk of the product being detached after transportation shock, thereby avoiding the displacement of the backlight LED lamp, thereby ensuring the display effect; in addition, by setting the graphite limiting piece, the heat dissipation effect of the product can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight structures, in particular to a backlight structure capable of preventing displacement of LED lamps. Background Art

[0002] The backlight structure is one of the core components of the display module, mainly used to provide light source for the display of the display module. Figure 1 As shown, an existing backlight structure 10 is used. In order to increase the screen-to-body ratio and better realize full-screen products, the size from the screen glass AA (Active Area) area of ​​the display module to the lower edge of the screen glass will usually be reduced, that is, the frame will be reduced, and the corresponding lower end size of the backlight structure 10 will also become smaller, resulting in a reduction in the area where the FPC 10a in the backlight LED lamp on the backlight structure 10 and the backlight frame 10b are fixed by the double-sided adhesive 10c. There is a risk of the product detaching due to transportation vibration, which may cause the backlight LED lamp to be displaced, thereby affecting the display effect. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a backlight structure capable of preventing displacement of LED lamps.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A backlight structure capable of preventing LED lamps from being displaced comprises: a backlight frame, a backlight LED light bar, a shading rubber pad and a graphite limiting plate, wherein a limiting cavity is provided on the backlight frame; the backlight LED light bar comprises an LED lamp and an FPC, wherein the LED lamp is arranged on the FPC, the FPC is partially adhered to the backlight frame, and the LED lamp faces the limiting cavity; the shading rubber pad is partially adhered to a side surface of the FPC away from the LED lamp; a part of the graphite limiting plate is adhered to the back side of the backlight frame, and another part of the graphite limiting plate is extended from the bottom of the FPC and folded back to the front side of the backlight frame, so that another part of the graphite limiting plate is adhered to the shading rubber pad.

[0006] In one embodiment, the graphite limiting plate is extended from another part of the bottom of the FPC and folded back to the front of the backlight frame to form a bending portion, and a first avoidance gap and a second avoidance gap are opened on the graphite limiting plate, and the first avoidance gap and the second avoidance gap are respectively located on both sides of the bending portion.

[0007] In one embodiment, a plurality of exhaust holes are provided on the bending portion.

[0008] In one embodiment, the exhaust hole is a circular structure.

[0009] In one of the embodiments, the area of ​​the graphite limiting plate attached to the back side of the backlight frame is larger than the area of ​​the graphite limiting plate attached to the front side of the backlight frame.

[0010] In one of the embodiments, an optical element is further included, and the optical element is accommodated in the limiting cavity.

[0011] In one embodiment, the optical element includes an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate and a reflective film which are stacked in sequence, and the reflective film is located at the bottom of the limiting cavity.

[0012] In one of the embodiments, the FPC is partially adhered to the backlight frame, and the FPC is partially adhered to a side surface of the light guide plate.

[0013] In one of the embodiments, the backlight frame is an integrated structure of rubber and iron.

[0014] In one embodiment, the shading pad is a double-sided adhesive black foam.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The backlight structure of the utility model which can prevent the displacement of LED lamps is provided with a backlight frame, a backlight LED light strip, a shading rubber pad and a graphite limiting piece, and a part of the graphite limiting piece is attached to the back side of the backlight frame, and the other part is extended from the bottom of the FPC and folded back to the front side of the backlight frame, so that the other part of the graphite limiting piece is attached to the shading rubber pad, that is, the graphite limiting piece wraps the lower end of the FPC. In this way, the position of the FPC can be limited by the graphite limiting piece, and the FPC and the backlight frame can be further fixed, so as to avoid the risk of separation of the product due to transportation vibration, and further avoid the displacement of the backlight LED lamp to ensure the display effect; in addition, the main body of the graphite limiting piece is made of graphite material with heat dissipation effect, so that the graphite limiting pieces are respectively located on both sides of the backlight LED light strip, thereby further improving the heat dissipation effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1 The figure is a schematic diagram of the structure of an existing backlight structure.

[0019] Figure 2 It is a front view structural schematic diagram of a backlight structure capable of preventing displacement of LED lamps in one embodiment of the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of a stacked structure of a backlight structure capable of avoiding displacement of LED lamps;

[0021] Figure 4 for Figure 2 A rear view structural diagram of a backlight structure capable of preventing displacement of LED lamps;

[0022] Figure 5 for Figure 2 Schematic diagram of the structure of the graphite limit plate of the backlight structure that can prevent the displacement of the LED lamp. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a backlight structure 20 capable of preventing LED lamp displacement includes: a backlight frame 100, a backlight LED light strip 200, a shading rubber pad 300 and a graphite limiting plate 400, wherein a limiting cavity is provided on the backlight frame 100; the backlight LED light strip 200 includes an LED lamp 210 and an FPC (flexible circuit board) 220, wherein the LED lamp 210 is arranged on the FPC 220, and the FPC 220 is partially adhered to the backlight frame 100, and the LED lamp 210 faces the limiting cavity; a portion of the shading rubber pad 300 is attached to a side surface of the FPC 220 away from the LED lamp 200; a portion of the graphite limiting plate 400 is attached to the back side of the backlight frame 100, and another portion of the graphite limiting plate 400 is extended from the bottom of the FPC 220 and folded back to the front side of the backlight frame 100, so that another portion of the graphite limiting plate 400 is attached to the shading rubber pad 300.

[0025] It should be noted that, a part of the graphite limit plate 400 is attached to the back of the backlight frame 100 through adhesive, and the other part is extended from the bottom of the FPC220 and folded back to the front of the backlight frame 100, so that the other part of the graphite limit plate 400 is attached to the light-shielding rubber pad 300, that is, the graphite limit plate 400 wraps the lower end of the FPC. In this way, the position of the FPC220 can be limited by the graphite limit plate 400, and the FPC220 and the backlight frame 100 can be further fixed to avoid the risk of the product being detached due to transportation shock, thereby avoiding the displacement of the backlight LED lamp 200 and ensuring the display effect; in addition, the main body of the graphite limit plate 400 is made of graphite material, which has a heat dissipation effect, so that the graphite limit plate 400 is respectively located on both sides of the backlight LED light bar 200 (the backlight LED light bar is the main heat source of the backlight), thereby further improving the heat dissipation effect of the product.

[0026] For further information, see Figure 4 and Figure 5 As shown, another part of the graphite stopper 400 is extended from the bottom of the FPC and folded back to the front of the backlight frame 100 to form a bent portion 410, and a first avoidance notch 420 and a second avoidance notch 430 are provided on the graphite stopper, and the first avoidance notch 420 and the second avoidance notch 430 are respectively located on both sides of the bent portion 410. The first avoidance notch 420 is used to avoid the extended FPC, and the second avoidance notch 430 is used to avoid the corner area of ​​the backlight structure.

[0027] Furthermore, a plurality of exhaust holes 411 are provided on the bending portion 410. The exhaust holes 411 can not only improve the bending flexibility and facilitate bending of the graphite limiting piece 400, but also exhaust gas to prevent bubbles from being attached to the bending portion of the graphite limiting piece and causing bulging.

[0028] Preferably, the exhaust hole 411 has a circular structure.

[0029] In one embodiment, the area of ​​the graphite stopper 400 attached to the back of the backlight frame 100 is larger than the area of ​​the graphite stopper 400 attached to the front of the backlight frame 100. The larger the area of ​​the graphite stopper 400 attached to the back of the backlight frame 100, the stronger the firmness of the graphite stopper 400; at the same time, the area of ​​the graphite stopper 400 attached to the front of the backlight frame 100 needs to be set in accordance with the size of the display module frame, and its area should not be too large to block the normal display of the display module.

[0030] In one embodiment, an optical element 500 is further included, and the optical element 500 is accommodated in the limiting cavity. The optical element is used to improve the quality of the light source emitted by the backlight LED light bar, thereby ensuring that the display module has a better display effect. Specifically, the optical element 500 includes an upper light-enhancing film 510, a lower light-enhancing film 520, a diffusion film 530, a light guide plate 540 and a reflective film 550 stacked in sequence, and the reflective film 550 is located at the bottom of the limiting cavity. In this way, the light source emitted by the backlight LED light bar can be brighter and more uniform, while also reducing light loss.

[0031] Furthermore, the FPC 220 is partially attached to the backlight frame 100, and the FPC 220 is partially attached to one side of the light guide plate 540. In this way, the attachment firmness of the FPC 220 can be further ensured, and the displacement of the FPC 220 during transportation vibration can be reduced.

[0032] Preferably, the backlight frame 100 is a plastic-iron integrated structure, that is, the backlight frame 100 is formed by a plastic frame and an iron frame in one piece, thereby not only reducing the weight of the backlight frame, but also ensuring the overall strength of the backlight frame 100 .

[0033] Furthermore, the light shielding pad 300 is a double-sided black foam. The light shielding pad 300 plays a role of shielding and preventing the light of the backlight structure from leaking out, so the black double-sided black foam is used accordingly, so as to further ensure the light shielding effect.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A backlight structure capable of preventing displacement of LED lamps, characterized in that: include: A backlight frame, wherein a limited position cavity is provided on the backlight frame; A backlight LED light bar, the backlight LED light bar comprising an LED light and an FPC, the LED light being arranged on the FPC, the FPC being partially adhered to the backlight frame, and the LED light facing the limiting cavity; A light shielding rubber pad, wherein the light shielding rubber pad is partially attached to a side surface of the FPC away from the LED lamp; and A graphite limiting plate, a part of which is attached to the back of the backlight frame, and another part of which is extended from the bottom of the FPC and folded back to the front of the backlight frame, so that the other part of the graphite limiting plate is attached to the light-shielding rubber pad.

2. The backlight structure capable of preventing displacement of LED lamps according to claim 1, characterized in that: Another part of the graphite limiting plate is extended from the bottom of the FPC and folded back to the front of the backlight frame to form a bending portion, and a first avoidance gap and a second avoidance gap are opened on the graphite limiting plate, and the first avoidance gap and the second avoidance gap are respectively located on both sides of the bending portion.

3. The backlight structure capable of preventing displacement of LED lamps according to claim 2, characterized in that: A plurality of exhaust holes are provided on the bending portion.

4. The backlight structure capable of preventing displacement of LED lamps according to claim 3, characterized in that: The exhaust hole is in a circular structure.

5. The backlight structure capable of preventing displacement of LED lamps according to any one of claims 1 to 4, characterized in that: The area of ​​the graphite limiting plate attached to the back side of the backlight frame is larger than the area of ​​the graphite limiting plate attached to the front side of the backlight frame.

6. The backlight structure capable of preventing displacement of LED lamps according to any one of claims 1 to 4, characterized in that: It also includes an optical element, which is accommodated in the limiting cavity.

7. The backlight structure capable of preventing displacement of LED lamps according to claim 6, characterized in that: The optical element comprises an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate and a reflective film which are stacked in sequence, and the reflective film is located at the bottom of the limiting cavity.

8. The backlight structure capable of preventing displacement of LED lamps according to claim 7, characterized in that: The FPC is partially adhered to the backlight frame, and the FPC is partially adhered to one side surface of the light guide plate.

9. The backlight structure capable of preventing displacement of LED lamps according to any one of claims 1 to 4, characterized in that: The backlight frame is a rubber-iron integrated structure.

10. The backlight structure capable of preventing displacement of LED lamps according to any one of claims 1 to 4, characterized in that: The shading rubber pad is made of black foam with double-sided adhesive.

Images