CN216792636U - Frame structure and backlight unit - Google Patents

Abstract

The utility model relates to the technical field of backlight panels, in particular to a frame structure and a backlight module. The frame structure mainly comprises a first frame, a second frame, a reflecting sheet, a light guide plate and a diffusion sheet. The first frame is clamped on the second frame, so that the first frame and the second frame jointly enclose an accommodating groove; the reflecting sheet, the light guide plate and the diffusion sheet are sequentially arranged in the accommodating groove in a laminated mode. In this embodiment, the frame structure includes a first light-shielding glue disposed on a periphery of a side of the light guide plate facing the diffusion sheet to form a closed light-shielding glue ring, and the first light-shielding glue is bonded to the diffusion sheet and configured to absorb light reflected by the second frame. This frame structure can make light can not follow the side of frame structure and jet out, and then has avoided the frame structure problem that side light leak, bright line appear to improve user's experience and feel, improve backlight unit's life and economic benefits.

Description

Frame structure and backlight unit

Technical Field

The utility model relates to the technical field of backlight panels, in particular to a frame structure and a backlight module.

Background

With the progress of science and technology and the development of economy, electronic products such as mobile phones and tablet computers are indispensable consumer goods in daily life. In order to pursue an extremely narrow frame, in electronic products such as a mobile phone and a tablet computer in the prior art, the effective overlapping coverage area of the light shielding glue on the frame and the light guide plate is smaller and smaller, so that light emitted by the LED light emitting sheet is reflected by the frame after passing through the light guide plate and then directly emitted from a gap between the light shielding glue and the light guide plate, and thus, the phenomena of light leakage and bright lines occur at the frame of the electronic products such as the mobile phone and the tablet computer, and bad experience feeling is brought to users; meanwhile, the normal display of the display screen is interfered by the problems of light leakage and bright lines of the frame, so that the service life of the display screen is shortened.

Therefore, it is desirable to design a frame structure and a backlight module to solve the technical problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The first objective of the present invention is to provide a frame structure, which can prevent light from being emitted from the side of the frame structure, so as to avoid the problems of light leakage and bright lines at the side of the frame structure, thereby improving the experience of the user.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a frame structure, comprising:

the first frame is clamped to the second frame, and an accommodating groove is formed by the first frame and the second frame in a surrounding manner;

the reflection sheet, the light guide plate and the diffusion sheet are sequentially arranged in the accommodating groove in a laminated mode;

the first shading glue is arranged on the periphery of one side, facing the diffusion sheet, of the light guide plate, forms a closed shading glue belt ring and is bonded to the diffusion sheet, and the first shading glue is configured to absorb light rays reflected by the second frame.

As an alternative, a sunken groove is formed in the light guide plate, and the first light-shielding glue is embedded in the sunken groove.

As an alternative, the thickness of the sinking groove is not less than the thickness of the first light shielding glue.

As an alternative, the light guide plate is further provided with a limiting part, and the limiting part is arranged in the sinking groove.

As an alternative scheme, a groove is formed in the first shading glue and connected with the limiting portion in a clamping mode.

As an alternative, a brightness enhancement film is further arranged on the diffusion sheet, the frame structure further comprises second shading glue, the second shading glue is partially arranged on the second frame, and the second shading glue is used for bonding and connecting the brightness enhancement film and the second frame.

As an alternative, a third light-shielding glue is attached to one side of the second frame, which is close to the light guide plate.

As an alternative, the first light shielding glue is in one of a straight shape, an L shape or a C shape.

As an alternative, the first light shielding adhesive is PET black double-sided adhesive.

The second objective of the present invention is to provide a backlight module, which has a simple structure, and can avoid the problems of light leakage and bright lines at the side of the backlight module, thereby improving the user experience and increasing the economic benefits.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a backlight module comprises the frame structure.

The utility model has the beneficial effects that:

the frame structure provided by the utility model is simple in structure, and the first light shading glue is additionally arranged on the light guide plate, so that light reflected by the second frame can be absorbed by the first light shading glue, and the light cannot be emitted from the edge of the diffusion sheet, so that the frame structure cannot generate the phenomena of bright lines and light leakage, and the experience of a user is improved. Meanwhile, the interference of the light rays to the normal display effect of the diffusion sheet can be avoided, and the service life of the diffusion sheet is prolonged.

The utility model also provides a backlight module which comprises the frame structure, and the backlight module can prevent light rays from being emitted from the side edge of the frame structure, so that the backlight module can avoid the problems of light leakage, backlight and bright lines, the experience of a user when using electronic products such as a mobile phone and a tablet personal computer is improved, the sales volume of the electronic products is increased, and the economic benefit is improved.

Drawings

Fig. 1 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a bezel structure provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic diagram of a frame structure of an "L-shaped" first light shielding adhesive according to an embodiment of the present invention.

Reference numerals are as follows:

1. a first frame; 2. a second frame; 21. a containing groove;

3. a reflective sheet; 4. a light guide plate; 41. sinking a groove; 42. a limiting part; 5. a diffusion sheet; 51. a brightness enhancement film; 6. a first light-shielding glue; 7. a second light-shielding glue; 8. and third light shading glue.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical problems that in the prior art, light leakage and bright lines occur on the frame of electronic products such as mobile phones and tablet computers, and the experience of users on the electronic products is influenced are solved. As shown in fig. 1-2, the present embodiment provides a frame structure, which can be used on a screen of a liquid crystal display, a mobile phone, a tablet computer, or other electronic displays. The frame structure mainly comprises a first frame 1, a second frame 2, a reflecting sheet 3, a light guide plate 4 and a diffusion sheet 5. The first frame 1 is clamped to the second frame 2, and the first frame 1 and the second frame 2 jointly enclose an accommodating groove 21; the reflection sheet 3, the light guide plate 4, and the diffusion sheet 5 are sequentially stacked in the accommodation groove 21 along the Z-axis direction. And then make storage tank 21 can play certain guard action to reflector plate 3, light guide plate 4 and diffusion piece 5, when avoiding external foreign matter to strike first frame 1 and second frame 2, reflector plate 3, light guide plate 4 and diffusion piece 5 are impaired to prolong its life. The frame structure in this embodiment includes a first light-shielding adhesive 6, and the first light-shielding adhesive 6 is disposed on the periphery of one side of the light guide plate 4 facing the diffusion sheet 5, and forms a closed light-shielding adhesive tape ring, specifically, the light-shielding adhesive tape ring is rectangular, the width of the first light-shielding adhesive 6 is preferably 0.2mm to 0.3mm, and the first light-shielding adhesive 6 is adhered to the diffusion sheet 5, and the first light-shielding adhesive 6 is configured to absorb the light reflected by the second frame 2.

Preferably, in this embodiment, the material of the reflective sheet 3 is selected from a PET (polyester resin) material, and a white or silver coating reflective layer is coated on the PET. The light guide plate 4 is made of a PC (polycarbonate) material by injection molding. The diffusion sheet 5 is made of PET material and is made by diffusing PMMA (acrylic) diffusion particles on PET. The first frame 1 and the second frame 2 can be made of metal alloy or hard PC plastic, and the like, so that the weight of electronic products such as mobile phones and tablet computers can be reduced, and the electronic products are lighter and more portable.

Further, in this embodiment, the frame structure further includes an LED light emitting assembly (not shown in the figure), light emitted from the LED light emitting assembly is reflected to the second frame 2 through the reflector plate 3, and then the light is reflected to the first light shielding glue 6 through the second frame 2 again, at this moment, the first light shielding glue 6 can absorb the light, so that the light cannot be emitted from the edge of the diffusion sheet 5, and further the frame structure can absorb the light reflected by the second frame 2, and thus the frame structure cannot generate bright lines and light leakage, and the user experience is enhanced. Meanwhile, the influence of the light on the display effect of the diffusion sheet 5 can be avoided, and the service life of the diffusion sheet 5 is prolonged. In this embodiment, the operating personnel can be through calculating the scope of diffusing piece 5 with light reflection through second frame 2, and then set up the area that first shading was glued 6 for the area that first shading was glued 6 is not less than the area that light reflected to diffusion piece 5 through second frame 2, thereby ensures that light can not shoot to diffusion piece 5 after 2 reflections of second frame, and then makes this frame structure can not appear the phenomenon of bright line, light leak. First anti-dazzling screen not only has the effect with absorbed light, simultaneously, can also improve the bonding stability of diffusion piece 5 and light guide plate 4, and then avoids cell-phone, panel computer isoelectron product to diffuse 5 and take place the displacement with light guide plate 4 in the use, the phenomenon that drops even to improve the stability and the reliability of this frame structure.

Specifically, the diffusion sheet 5 in this embodiment is provided with a light diffusion sheet that is beneficial to light rays being uniformly distributed on the diffusion sheet 5, so that a dark area or an area with abnormal brightness does not appear on the diffusion sheet 5, and the experience of a user on an electronic product is improved. The arrangement of the reflector plate 3 is beneficial to reflecting the light emitted by the LED light-emitting component to the diffusion plate 5, so that the utilization rate of the light is increased.

Compared with the prior art, the frame structure that provides in this embodiment, its simple structure glues 6 through addding first shading on light guide plate 4, and then makes the light after the reflection of second frame 2 can be glued 6 by first shading and absorb for light can not follow diffusion 5 edge and jet out, thereby makes this frame structure the phenomenon that bright line, light leak can not appear, increases user's experience and feels. Meanwhile, the interference of the light to the normal display effect of the diffusion sheet 5 can be avoided, and the service life of the diffusion sheet 5 is prolonged.

As shown in fig. 1-2, the light guide plate 4 of the present embodiment is provided with a sinking groove 41, and the first light shielding glue 6 is embedded in the sinking groove 41, so as to reduce the thickness of the frame structure along the Z-axis direction, so that the frame structure becomes thinner and lighter, and further meets the requirement of the user on the light and thin electronic product.

Preferably, in this embodiment, the thickness of the sinking groove 41 is not less than the thickness of the first light shielding glue 6, so that it can be ensured that the first light shielding glue 6 can be completely embedded in the sinking groove 41, and the stability and reliability of the first light shielding glue 6 are improved. Meanwhile, the first light shielding glue 6 can be prevented from overflowing to the outer side of the light guide plate 4 to affect the appearance effect of the frame structure, the use of the first light shielding glue 6 can be reduced, and the cost is saved.

Further, the light guide plate 4 in this embodiment is further provided with a limiting portion 42, the limiting portion 42 is disposed in the sinking groove 41, the first light shielding glue 6 is provided with a groove, and the groove is connected to the limiting portion 42 in a clamping manner. The limiting portion 42 can play a certain role in fixing and limiting the first light shielding adhesive 6. Like this through recess and spacing portion 42's joint effect for first shading is glued 6 and can firmly inlay and establish in heavy groove 41, and then avoids at the in-process of equipment light guide plate 4 and diffusion piece 5, and first shading is glued 6 and is taken place the risk that the displacement drops even.

In order to improve the light absorption effect of the frame structure, as shown in fig. 2, the frame structure in this embodiment further includes a second light-shielding glue 7, and the second light-shielding glue 7 is partially disposed on the second frame 2 along the Z-axis direction, and the diffusion sheet 5 and the second frame 2 are bonded and connected by the second light-shielding glue 7. Therefore, the light rays reflected into the accommodating groove 21 by the second frame 2 can be absorbed by the second light shading glue 7, so that the frame structure does not have the phenomena of bright lines and light leakage, and the experience of a user is improved. In addition, the second shading glue 7 can increase the stability and the reliability of the connection of the second frame 2 and the diffusion sheet 5, so that the diffusion sheet 5 can reduce the degree of freedom of the diffusion sheet 5 through the combined action of the first shading glue 6 and the second shading glue 7, thereby improving the stability and the reliability of the diffusion sheet 5 and prolonging the service life of the frame structure.

Preferably, as shown in fig. 2, in this embodiment, a brightness enhancement film 51 is further disposed on the diffusion sheet 5 along the Z-axis direction, the brightness enhancement film 51 is adhesively connected to the second light-shielding glue 7, and the brightness enhancement film 51 is disposed on the upper surface of the diffusion sheet 5, and the number of the brightness enhancement films is 2. Of course, the operator can increase or decrease the number of the brightness enhancement films 51 according to the actual needs to meet different needs of the user. The brightness enhancement film 51 is beneficial to improving the brightness of light on the diffusion sheet 5, so that a user can clearly see images and subtitles on the diffusion sheet 5, the requirements of the elderly with poor eyesight are further met, and the user experience is improved.

Preferably, as shown in fig. 2, in this embodiment, a third light-shielding adhesive 8 is attached to one side of the second frame 2 close to the light guide plate 4, so that when light is strong and light density is high, the third light-shielding adhesive 8 can preferentially absorb a part of the light, and the remaining light that is not absorbed by the third light-shielding adhesive 8 can be reflected by the third light-shielding adhesive 8 and then absorbed by the first light-shielding adhesive 6 and the second light-shielding adhesive 7, thereby further ensuring that the frame structure does not have bright lines and light leakage, thereby improving the flexible usability of the frame structure for reflected light with different light intensities and light densities, and achieving the purpose of saving cost.

Preferably, as shown in fig. 2, in this embodiment, the first light shielding glue 6 is in a shape of a straight line, so as to save cost, improve the installation efficiency of the first light shielding glue 6, and reduce the weight of the frame structure. As shown in fig. 3, the operator can set the first light-shielding glue 6 to be one of "L" type or "C" type according to the actual requirement, that is, the first light-shielding glue 6 covers the side of the light guide plate 4, so as to increase the bonding area between the first light-shielding glue 6 and the light guide plate 4, and improve the light absorption effect of the first light-shielding glue 6. In addition, in other embodiments of the present invention, the worker may further set the first light shielding glue 6 to have other shapes, such as a wave shape, an arc shape, and the like, which is not described herein again.

Preferably, in this embodiment, the first light-shielding adhesive 6, the second light-shielding adhesive 7 and the third light-shielding adhesive 8 are PET black double-sided adhesive, so that the first light-shielding adhesive 6, the second light-shielding adhesive 7 and the third light-shielding adhesive 8 not only have the function of absorbing light, but also have the function of bonding. Of course, in other embodiments of the present invention, the worker may also use materials such as PET to make the first light-shielding glue 6, the second light-shielding glue 7, and the third light-shielding glue 8, and the materials that can achieve the light absorption and the double-sided bonding function all belong to the protection scope of the present invention, and are not described in detail herein.

This embodiment still provides a backlight unit, and this backlight unit includes above frame structure, and this backlight unit can make light can not follow the side reason of frame structure and jet out, and then makes backlight unit can not appear the problem of light leak, backlight and bright line to improve the user and use the experience sense when electronic product such as cell-phone, panel computer, and then increase electronic product's sales volume, improve economic benefits.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A frame structure, comprising:

the frame comprises a first frame (1) and a second frame (2), wherein the first frame (1) is clamped on the second frame (2), and an accommodating groove (21) is formed by the first frame (1) and the second frame (2) in a surrounding manner;

the light guide plate comprises a reflecting sheet (3), a light guide plate (4) and a diffusion sheet (5), wherein the reflecting sheet (3), the light guide plate (4) and the diffusion sheet (5) are sequentially arranged in the accommodating groove (21) in a laminated mode;

the first shading glue (6) is arranged on the periphery of one side, facing the diffusion sheet (5), of the light guide plate (4), forms a closed shading glue ring and is bonded to the diffusion sheet (5), and the first shading glue (6) is configured to absorb light rays reflected by the second frame (2).

2. The frame structure according to claim 1, wherein the light guide plate (4) is provided with a sunken groove (41), and the first light shielding glue (6) is embedded in the sunken groove (41).

3. Frame structure according to claim 2, characterized in that the thickness of said sinking groove (41) is not less than the thickness of said first light-shielding glue (6).

4. The frame structure according to claim 2, wherein a position-limiting portion (42) is further disposed on the light guide plate (4), and the position-limiting portion (42) is disposed in the sinking groove (41).

5. The frame structure according to claim 4, wherein a groove is formed in the first light-shielding adhesive (6), and the groove is connected with the limiting portion (42) in a clamping manner.

6. A frame structure according to claim 1, wherein a light-adding film (51) is further disposed on the diffusion sheet (5), the frame structure further comprises a second light-shielding glue (7), a part of the second light-shielding glue (7) is disposed on the second frame (2), and the second light-shielding glue (7) adhesively connects the light-adding film (51) and the second frame (2).

7. The frame structure according to claim 1, wherein a third light shielding glue (8) is attached to a side of the second frame (2) close to the light guide plate (4).

8. The frame structure according to claim 1, wherein the first light shielding glue (6) is one of a "straight type", "L type" or "C type".

9. Frame structure according to any one of claims 1 to 8, characterized in that said first light screening glue (6) is a PET black double-sided glue.

10. A backlight module, characterized in that the backlight module comprises the frame structure as claimed in any one of claims 1 to 9.

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