A backlight structure for reducing stress concentration

Abstract

The utility model discloses a backlight structure for reducing stress concentration, and relates to the technical field of backlight structures. The backlight structure for reducing stress concentration comprises a frame, a light guide plate, a fixed lamp frame, an upper diffusion sheet, a light-enhancing layer and a lower diffusion sheet, both ends of the upper diffusion sheet are fixedly connected with black strips, a plurality of lamp beads are arranged on the outside of the fixed lamp frame, the black strips are arranged, the material of the backlight black strips is changed to soft foam by cooperating with square holes, the design of the black strips is changed, when the LCD is attached to the backlight, the black strips fill the space formed between the LCD single-layer area and the upper diffusion sheet, the arrangement of the black strips can support the space, when the LCD single-layer area is deformed, the black strips provide support for the LCD single-layer area and provide buffering for the LCD single-layer area, when the black strips are locally stressed, the stress can be dispersed to the entire plane of the support layer, stress concentration can be reduced, the LCD single-layer area can be effectively prevented from being broken, and the probability of the single-layer area breaking in the whole machine mechanical experiment can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight structures, in particular to a backlight structure capable of reducing stress concentration. Background Art

[0002] With the emergence of major mobile phone screen manufacturers, the current mobile phone market has diversified screens, the screen-to-body ratio continues to increase, and narrow-frame design is also the mainstream today. Narrow frame has higher requirements for LCM, and the mechanical performance will decrease when ensuring the product structure, which will increase the project cycle. If the traditional LCD industry wants to continue to share a share in the display industry, the structural design must continue to reflect its advantages. When the price of the overall material combination is difficult to compress, the only way to improve the reliability of the module is to optimize and improve the design.

[0003] At present, when the LCD is bonded to the backlight, there is a certain space between the LCD single-layer area and the backlight structure. In order to reduce the space, the space will be filled so that the two ends of the LCD single-layer area are in contact with the filler. Due to the hardness of the filler, when conducting the whole machine test, the two ends of the LCD single-layer area are deformed by force and easily damaged, and even the single-layer area will be broken. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a backlight structure that reduces stress concentration and solves the technical problem that due to the hardness of the filler, the two ends of the LCD single-layer area are easily deformed and damaged, or even cause the single-layer area to rupture during the whole machine experiment.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A backlight structure for reducing stress concentration comprises a frame, a light guide plate, a fixed lamp holder, an upper diffuser, a light-enhancing layer and a lower diffuser, wherein the fixed lamp holder is placed on the inner side of the frame, the light guide plate is placed on the inner side of the frame, the lower diffuser is attached to the upper surface of the light guide plate, the light-enhancing layer is placed above the lower diffuser, and the upper diffuser is placed above the light-enhancing layer. Black strips are fixedly connected at both ends of the upper diffuser, a plurality of lamp beads are arranged on the outside of the fixed lamp holder, a plurality of square holes are opened on the outside of the fixed lamp holder, the lamp beads are located inside the square holes, the black strips are located on a side of the upper diffuser away from the light-enhancing layer, and the black strips are made of soft foam.

[0009] A reflective plate is arranged on the outside of the fixed lamp frame, and the reflective plate is located above the lamp beads. A slide groove is provided on the outside of the fixed lamp frame, and the reflective plate is clamped in the inside of the slide groove. A built-in groove is provided in the inside of the slide groove. A built-in plate is fixedly installed on the outside of the reflective plate, and the built-in plate is slidably connected to the inside of the built-in groove.

[0010] Preferably: a gasket is arranged outside the reflective plate, the gasket is fitted with the frame, and the gasket is made of silicone.

[0011] Preferably, a groove is formed on the outside of the reflector, and the gasket is clamped inside the groove.

[0012] (III) Beneficial effects

[0013] 1. By setting black strips and matching the square holes, the material of the backlight black strips is changed to soft foam, and the design of the black strips is changed. The soft foam has a series of characteristics such as elasticity, light weight, fast pressure-sensitive fixation, easy use, easy bending, ultra-thin volume, and reliable performance. When the LCD is bonded to the backlight, the black strips fill the space between the LCD single-layer area and the upper diffuser. The setting of the black strips can support the space. When the LCD single-layer area is deformed, the black strips provide support for the LCD single-layer area and provide buffering for the LCD single-layer area. When the local force is applied, the black strips can disperse the stress to the entire plane of the support layer, reduce stress concentration, and effectively avoid the rupture of the LCD single-layer area, thereby reducing the probability of rupture of the single-layer area in the mechanical experiment of the whole machine.

[0014] 2. By setting up a reflective plate and cooperating with a slide groove, after the lamp beads are installed, the reflective plate is installed on the outside of the fixed lamp frame through the slide groove. When the lamp beads emit light, the reflective plate reflects the light dispersed upward by the lamp beads into the light-incoming surface of the light guide plate, thereby increasing the average brightness of the backlight structure and improving the utilization rate of light. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 For this utility model Figure 1 A magnified structural diagram of the middle part;

[0018] Figure 3 For this utility model Figure 1 Structure diagram of the middle frame;

[0019] Figure 4 For this utility model Figure 1Structural diagram of the fixed light stand.

[0020] Legend: 1. Frame; 2. Light guide plate; 3. Fixed lamp holder; 4. Upper diffuser; 5. Light enhancement layer; 6. Lower diffuser; 7. Black strip; 8. Lamp beads; 9. Square hole; 10. Reflector; 11. Slide groove; 12. Built-in groove; 13. Built-in plate; 14. Gasket; 15. Groove. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a backlight structure that reduces stress concentration, thereby effectively solving the technical problem that due to the hardness of the filler, the two ends of the LCD single-layer area are easily deformed and damaged, or even cause the single-layer area to rupture during the whole machine test.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The technical solution in the embodiment of the present application effectively solves the technical problem that due to the hardness of the filler, the two ends of the LCD single-layer area are easily deformed and damaged during the whole machine experiment, and even the single-layer area is broken. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a backlight structure for reducing stress concentration, which includes a frame 1, a light guide plate 2, a fixed lamp holder 3, an upper diffuser 4, a light-enhancing layer 5 and a lower diffuser 6. The fixed lamp holder 3 is placed on the inner side of the frame 1, the light guide plate 2 is placed on the inner side of the frame 1, the lower diffuser 6 is attached to the upper surface of the light guide plate 2, the light-enhancing layer 5 is placed above the lower diffuser 6, the upper diffuser 4 is placed above the light-enhancing layer 5, both ends of the upper diffuser 4 are fixedly connected with black strips 7, a plurality of lamp beads 8 are arranged on the outside of the fixed lamp holder 3, a plurality of square holes 9 are opened on the outside of the fixed lamp holder 3, the holes are square holes 9, the size can be 0.5-0.8mm, the hole space is 2-3mm, the number of holes is designed according to the number of lamps, and the probability of single-layer area rupture in the whole machine mechanical experiment can be further reduced;

[0025] The lamp beads 8 are located inside the square holes 9 , and the black strips 7 are located on a side of the upper diffusion sheet 4 away from the light-enhancing layer 5 . The black strips 7 are made of soft foam.

[0026] By setting the black strip 7 and cooperating with the square hole 9, the material of the backlight black strip 7 is changed to soft foam, and the design of the black strip 7 is changed. The soft foam has a series of characteristics such as elasticity, light weight, rapid pressure-sensitive fixation, easy use, easy bending, ultra-thin volume, and reliable performance. When the LCD and the backlight are bonded, the black strip 7 fills the space formed between the LCD single-layer area and the upper diffusion sheet 4. The setting of the black strip 7 can support the space. When the LCD single-layer area is deformed, the black strip 7 provides support for the LCD single-layer area and provides a buffer for the LCD single-layer area. When the black strip 7 is locally stressed, it can disperse the stress to the entire plane of the support layer, reduce stress concentration, and effectively avoid the single-layer area of ​​the LCD from rupture, thereby reducing the probability of rupture of the single-layer area in the mechanical experiment of the whole machine.

[0027] A reflector 10 is disposed outside the fixed lamp frame 3;

[0028] Among them, the reflector 10 is located above the lamp beads 8. After the lamp beads 8 emit light, the reflector 10 reflects the light dispersed upward by the lamp beads 8 into the light-incoming surface of the light guide plate 2, so that the average brightness of the backlight structure is improved, thereby improving the utilization rate of light.

[0029] A slide groove 11 is provided on the outside of the fixed lamp holder 3;

[0030] The reflective plate 10 is clamped in the slide groove 11 , which makes it easy to disassemble and assemble the reflective plate 10 .

[0031] An internal groove 12 is provided inside the slide groove 11, and an internal plate 13 is fixedly installed outside the reflector plate 10;

[0032] The built-in plate 13 is slidably connected inside the built-in groove 12 to limit the lateral movement of the reflective plate 10 .

[0033] A gasket 14 is provided outside the reflector 10;

[0034] The gasket 14 is fitted with the frame 1 and is made of silicone material to prevent scratches caused by friction between the reflective plate 10 and the frame 1 , thereby providing protection for the frame 1 and the reflective plate 10 .

[0035] A groove 15 is formed on the outside of the reflector 10;

[0036] The gasket 14 is clamped in the groove 15 to facilitate assembly and disassembly of the gasket 14 .

[0037] By setting a reflective plate 10 in conjunction with the slide groove 11, after the lamp beads 8 are installed, the reflective plate 10 is installed on the outside of the fixed lamp frame 3 through the slide groove 11. When the lamp beads 8 emit light, the reflective plate 10 reflects the light dispersed upward by the lamp beads 8 into the light-incoming surface of the light guide plate 2, thereby improving the average brightness of the backlight structure and thus improving the utilization rate of light.

[0038] Working principle:

[0039] During installation, the lamp beads 8 are pasted one by one inside the square hole 9, the fixed lamp holder 3 is installed on the inner side of the frame 1, and then the light guide plate 2, the lower diffuser 6, the light enhancement layer 5 and the upper diffuser 4 are pasted one by one;

[0040] The backlight black strip 7 is pasted on the upper surface of the upper diffuser 4. The soft foam has a series of characteristics such as elasticity, light weight, fast pressure-sensitive fixation, easy use, easy bending, ultra-thin volume, and reliable performance. When the LCD and the backlight are attached, the black strip 7 fills the space formed between the LCD single-layer area and the upper diffuser 4. The setting of the black strip 7 can support the space. When the LCD single-layer area is deformed, the black strip 7 provides support for the LCD single-layer area and provides a buffer for the LCD single-layer area. When the black strip 7 is locally stressed, it can disperse the stress to the entire plane of the support layer, reduce stress concentration, and effectively avoid the LCD single-layer area from rupture, thereby reducing the probability of rupture of the single-layer area in the mechanical experiment of the whole machine.

[0041] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A backlight structure for reducing stress concentration, comprising a frame (1), a light guide plate (2), a fixed lamp frame (3), an upper diffuser (4), a light enhancement layer (5) and a lower diffuser (6), wherein the fixed lamp frame (3) is placed on the inner side of the frame (1), the light guide plate (2) is placed on the inner side of the frame (1), the lower diffuser (6) is attached to the upper surface of the light guide plate (2), the light enhancement layer (5) is placed above the lower diffuser (6), and the upper diffuser (4) is placed above the light enhancement layer (5), characterized in that: Both ends of the upper diffusion sheet (4) are fixedly connected with black strips (7), a plurality of lamp beads (8) are arranged outside the fixed lamp holder (3), and a plurality of square holes (9) are opened outside the fixed lamp holder (3); The lamp bead (8) is located inside the square hole (9), the black strip (7) is located on a side of the upper diffusion sheet (4) away from the light-enhancing layer (5), and the black strip (7) is made of soft foam.

2. A backlight structure for reducing stress concentration as claimed in claim 1, characterized in that: A reflective plate (10) is arranged outside the fixed lamp frame (3); Wherein, the reflector plate (10) is located above the lamp bead (8).

3. A backlight structure for reducing stress concentration as claimed in claim 1, characterized in that: The fixed lamp holder (3) is provided with a slide groove (11) on its exterior; The reflective plate (10) is clamped inside the slide groove (11).

4. A backlight structure for reducing stress concentration as claimed in claim 3, characterized in that: The interior of the slide groove (11) is provided with a built-in groove (12), and the exterior of the reflective plate (10) is fixedly provided with a built-in plate (13); The built-in plate (13) is slidably connected inside the built-in groove (12).

5. The backlight structure for reducing stress concentration according to claim 2, characterized in that: A gasket (14) is arranged outside the reflection plate (10); The gasket (14) is fitted with the frame (1), and the gasket (14) is made of silicone material.

6. The backlight structure for reducing stress concentration according to claim 2, characterized in that: The reflective plate (10) is provided with a groove (15) on its exterior; The gasket (14) is clamped inside the groove (15).

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