CN210294756U - Seamless side-emitting backlight source - Google Patents
Seamless side-emitting backlight source Download PDFInfo
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- CN210294756U CN210294756U CN201921275759.5U CN201921275759U CN210294756U CN 210294756 U CN210294756 U CN 210294756U CN 201921275759 U CN201921275759 U CN 201921275759U CN 210294756 U CN210294756 U CN 210294756U
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Abstract
The utility model discloses a seamless side-emitting backlight. The side-emitting backlight source comprises a bottom shell; the reflecting layer is arranged at the bottom of the concave cavity and matched with the shape of the concave cavity; the light guide plate is arranged in the inner concave cavity, and a gap is formed between one side edge of the light guide plate and one side edge of the inner concave cavity; the light source is arranged in the gap; a diffusion layer attached to the upper surface of the light guide plate for uniformly diffusing the light emitted from the upper surface of the light guide plate; and the black-white glue layer is attached above the diffusion layer, the middle area of the black-white glue layer is a light-transmitting area, the peripheral area of the black-white glue layer is a non-light-transmitting area, and the non-light-transmitting area covers the edge of the diffusion layer. Due to the adoption of the design of the bottom shell, the bottom shell can be used as an auxiliary tool when the emitting layer is pasted, so that the pasting is more accurate; meanwhile, the design of the black-white glue layer is added, and the edge of the diffusion layer is covered by the black-white glue layer to ensure that the diffusion layer is light-tight, so that the aim of no gap at the side edge of the backlight source is fulfilled.
Description
Technical Field
The utility model relates to a backlight technical field especially relates to a seamless luminous backlight of side.
Background
BackLight (BackLight) is a light source located behind a Liquid Crystal Display (LCD), and its lighting effect directly affects the visual effect of the liquid crystal display module (LCM). The liquid crystal display does not emit light itself, and it displays a pattern or its result of modulating light.
In order to solve the problem of luminance of the backlight in the current market, light sources are generally arranged on at least two sides of the backlight, and most commonly, the light sources are arranged on four sides of the backlight.
However, this design is troublesome, and not only from the power supply but also from the assembly, since it has a plurality of light sources, the assembly is time-consuming and laborious, and there are disadvantages in terms of circuit design and the like.
Meanwhile, in the backlight source in the market, because the diffusion layer is not accurately adhered, the periphery of the diffusion layer often has residual light to be emitted.
Moreover, when the reflective layer is pasted, the pasting of the reflective layer is inaccurate due to the absence of the auxiliary pasting device, and the product quality is seriously affected.
Accordingly, there is a need in the market today for a seamless side-emitting backlight that can address one or more of the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
For solving one or more problems that exist among the prior art, the utility model provides a seamless side-emitting backlight.
The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be: a seamless side-lit backlight, the seamless side-lit light source comprising:
the bottom shell is provided with an inwards concave cavity;
the reflecting layer is arranged at the bottom of the concave cavity and matched with the shape of the concave cavity;
the light guide plate is arranged in the concave cavity, and a gap is formed between one side edge of the light guide plate and one side edge of the concave cavity;
the light source is arranged in the gap, is matched with the gap, and has a light emitting surface parallel to the height direction of the light guide plate and facing the inner side of the light guide plate;
the diffusion layer is attached to the upper surface of the light guide plate and used for uniformly diffusing the light emitted from the upper surface of the light guide plate; and
the black-white glue layer is attached to the upper portion of the diffusion layer, the middle area of the black-white glue layer is a light-transmitting area, the peripheral area of the black-white glue layer is a non-light-transmitting area, and the edge of the diffusion layer is covered by the non-light-transmitting area.
In some embodiments, the light guide plate is provided with a plurality of light guide points with uniform number in a unit area, and the sizes of the light guide points are gradually increased along a direction away from the light source.
In some embodiments, the light source comprises:
the PCB is arranged in the gap and matched with the gap, and a circuit is etched on the PCB;
the LED lamp beads are welded on the PCB and are electrically connected with the circuit on the PCB; and
the welding spots are arranged on the side face of the PCB, connected with the circuit and located at two ends of the PCB.
In some embodiments, the bottom case is provided with two wire outlets which are matched with the two welding points.
In some embodiments, the light guide plate is provided with a first clearance groove for avoiding the LED lamp bead during installation.
In some embodiments, a limiting protrusion for clamping the light source in the gap is disposed on the bottom case.
In some embodiments, the reflective layer is provided with a second clearance groove matched with the limiting protrusion.
In some embodiments, an adhesive layer is disposed on the back surface of the bottom casing for facilitating the installation of the side-emitting backlight source.
In some embodiments, the adhesive layer is a double-sided tape.
In some embodiments, a sum of heights of the reflective layer, the light guide plate, and the diffusion layer is equal to a depth of the concave cavity.
The utility model has the advantages that: compared with the prior art, the utility model comprises a bottom shell, wherein an indent cavity is arranged on the bottom shell; the reflecting layer is arranged at the bottom of the concave cavity and matched with the shape of the concave cavity; the light guide plate is arranged in the concave cavity, and a gap is formed between one side edge of the light guide plate and one side edge of the concave cavity; the light source is arranged in the gap, is matched with the gap, and has a light emitting surface parallel to the height direction of the light guide plate and facing the inner side of the light guide plate; the diffusion layer is attached to the upper surface of the light guide plate and used for uniformly diffusing the light emitted from the upper surface of the light guide plate; and the black-white adhesive layer is attached above the diffusion layer, the middle area of the black-white adhesive layer is a light-transmitting area, the peripheral area of the black-white adhesive layer is a non-light-transmitting area, and the non-light-transmitting area covers the edge of the diffusion layer. Due to the adoption of the design of the bottom shell, the bottom shell can be used as an auxiliary tool when the emitting layer is pasted, so that the pasting is more accurate; meanwhile, the design of the black-white glue layer is added, and the edge of the diffusion layer is covered by the black-white glue layer to ensure that the diffusion layer is light-tight, so that the aim of no gap at the side edge of the backlight source is fulfilled.
Drawings
Fig. 1 is a schematic structural view of a seamless side-emitting backlight according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of another angle of a seamless side-emitting backlight according to a preferred embodiment of the present invention;
fig. 3 is an exploded view of a seamless side-emitting backlight according to a preferred embodiment of the present invention;
fig. 4 is a schematic structural view of a seamless side-emitting backlight source without a diffusion layer and a black-and-white glue layer according to a preferred embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of a bottom case and a light source in a seamless side-emitting backlight according to a preferred embodiment of the present invention;
fig. 6 is a schematic structural view of a bottom case of a seamless side-emitting backlight according to a preferred embodiment of the present invention;
fig. 7 is a schematic structural view of an LED light bar in a seamless side-emitting backlight according to a preferred embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
As shown in fig. 1-7, the present invention provides a side-emitting backlight 40 without a gap 31, where the side-emitting backlight of the gap 31 is comprised of a light source 40:
the bottom shell 10 is provided with an inwards concave cavity 11;
the reflecting layer 20 is arranged at the bottom of the concave cavity 11, and the reflecting layer 20 is matched with the shape of the concave cavity 11;
the light guide plate 30 is disposed in the concave cavity 11, and a gap 31 is formed between one side of the light guide plate 30 and one side of the concave cavity 11;
the light source 40 is arranged in the gap 31, matched with the gap 31, and the light emitting surface of the light source 40 is parallel to the height direction of the light guide plate 30 and faces the inner side of the light guide plate 30;
a diffusion layer 50 attached to the upper surface of the light guide plate 30 for uniformly diffusing the light emitted from the upper surface of the light guide plate 30; and
the black-white glue layer 60 is attached above the diffusion layer 50, the middle area of the black-white glue layer 60 is a light-transmitting area 61, the peripheral area of the black-white glue layer is a non-light-transmitting area 62, and the edge of the diffusion layer 50 is covered by the non-light-transmitting area 62.
Specifically, this scheme adopts drain pan 10's design, when the installation, at first places reflection stratum 20 on drain pan 10 bottom surface, once advances line location to it, then carries out the secondary location with light guide plate 30 along the lateral wall of drain pan 10 indent cavity 11, with two parts of all fixing a position the completion, installs along the lateral wall of indent cavity 11, realizes accurate, convenient laminating, has improved laminating efficiency and laminating quality greatly.
Meanwhile, after the diffusion layer 50 on the upper surface of the light guide plate 30 is attached, the light leakage and other phenomena often occur around the diffusion layer 50 due to the attachment deviation, the scheme adopts the black-and-white glue layer 60, the middle area of the black-and-white glue layer 60 is the light-transmitting area 61, light can be emitted, the peripheral area is the non-light-transmitting area 62, the area of the non-light-transmitting area 62 just covers the edge of the diffusion layer 50, even if light is emitted from the edge of the diffusion layer 50, the non-light-transmitting area 62 of the black-and-white glue layer 60 can also block the light, and the purposes of no gap 31 and no light leakage are achieved.
In some embodiments, the light guide plate 30 is provided with a plurality of light guide points 32 uniformly distributed in a unit area, and the size of the light guide points 32 gradually increases along a direction away from the light source 40.
Specifically, the present embodiment is designed to facilitate installation and circuit design, and the light source 40 is designed as one, and for this reason, the light guide points 32 on the light guide plate 30 are designed as above, and through the above design, the light intensity of the light guide plate 30 is uniform and uniform.
In some embodiments, the light source 40 includes:
the PCB 41 is arranged in the gap 31 and matched with the gap 31, and a circuit is etched on the PCB 41;
the LED lamp beads 42 are welded on the PCB 41, and are electrically connected with the circuit on the PCB 41; and
and the two welding spots 43 are arranged on the side surface of the PCB 41, are connected with the circuit and are positioned at two ends of the PCB 41.
In some embodiments, the bottom case 10 is provided with two wire outlets 12 matching with the two welding points 43.
Specifically, this scheme designs two solder joints 43 in the side, designs simultaneously at PCB board 41 both ends, also designs two and solder joint matched with wire hole 12 on drain pan 10, the wiring of the wire rod of being convenient for, and overall structure is ingenious.
In some embodiments, the light guide plate 30 is provided with a first clearance groove 33 for avoiding the LED lamp bead 42 during installation.
In some embodiments, the bottom case 10 is provided with a limiting protrusion 13 for clamping the light source 40 in the gap 31.
Specifically, for the installation of convenient PCB board 41, this scheme has still designed spacing arch 13, and this spacing arch 13 can be fixed PCB board 41 joint in drain pan 10, makes things convenient for the independent installation of each part in the drain pan 10 greatly.
In some embodiments, the reflective layer 20 is provided with a second clearance groove 21 matching with the limiting protrusion 13.
In some embodiments, the bottom shell 10 is provided with an adhesive layer 70 on the back surface thereof for facilitating the installation of the side-emitting backlight 40.
In some embodiments, the adhesive layer 70 is a double-sided tape.
Specifically, the adhesive layer 70 is further designed on the back surface of the bottom shell 10, and when the backlight source 40 needs to be installed, the adhesive layer 70 can also play a role in fixing, thereby greatly facilitating installation.
In some embodiments, the sum of the heights of the reflective layer 20, the light guide plate 30, and the diffusion layer 50 is equal to the depth of the inner concave chamber 11.
To sum up, the utility model comprises a bottom shell 10, wherein an inner concave cavity 11 is arranged on the bottom shell 10; the reflecting layer 20 is arranged at the bottom of the concave cavity 11, and the reflecting layer 20 is matched with the shape of the concave cavity 11; the light guide plate 30 is disposed in the concave cavity 11, and a gap 31 is formed between one side of the light guide plate 30 and one side of the concave cavity 11; the light source 40 is arranged in the gap 31, matched with the gap 31, and the light emitting surface of the light source 40 is parallel to the height direction of the light guide plate 30 and faces the inner side of the light guide plate 30; a diffusion layer 50 attached to the upper surface of the light guide plate 30 for uniformly diffusing the light emitted from the upper surface of the light guide plate 30; and the black-white glue layer 60 is attached above the diffusion layer 50, the middle area of the black-white glue layer 60 is a light-transmitting area 61, the peripheral area of the black-white glue layer is a non-light-transmitting area 62, and the non-light-transmitting area 62 covers the edge of the diffusion layer 50. Due to the adoption of the design of the bottom shell 10, when the emitting layer is pasted, the bottom shell 10 can be used as an auxiliary tool, so that the pasting is more accurate; meanwhile, the design of the black-and-white glue layer 60 is added, and the edge of the diffusion layer 50 is covered by the black-and-white glue layer 60 to be light-tight, so that the purpose that no gap 31 is formed at the side edge of the backlight source 40 is achieved.
The above-mentioned embodiments only express two embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A seamless side-lit backlight, wherein the seamless side-lit source comprises:
the bottom shell is provided with an inwards concave cavity;
the reflecting layer is arranged at the bottom of the concave cavity and matched with the shape of the concave cavity;
the light guide plate is arranged in the concave cavity, and a gap is formed between one side edge of the light guide plate and one side edge of the concave cavity;
the light source is arranged in the gap, is matched with the gap, and has a light emitting surface parallel to the height direction of the light guide plate and facing the inner side of the light guide plate;
the diffusion layer is attached to the upper surface of the light guide plate and used for uniformly diffusing the light emitted from the upper surface of the light guide plate; and
the black-white glue layer is attached to the upper portion of the diffusion layer, the middle area of the black-white glue layer is a light-transmitting area, the peripheral area of the black-white glue layer is a non-light-transmitting area, and the edge of the diffusion layer is covered by the non-light-transmitting area.
2. A seamless side-emitting backlight according to claim 1, wherein the light guide plate has a uniform number of light guide points per unit area, and the light guide points are gradually larger in size in a direction away from the light source.
3. The seamless side-lit backlight of claim 1, wherein the light source comprises:
the PCB is arranged in the gap and matched with the gap, and a circuit is etched on the PCB;
the LED lamp beads are welded on the PCB and are electrically connected with the circuit on the PCB; and
the welding spots are arranged on the side face of the PCB, connected with the circuit and located at two ends of the PCB.
4. A seamless side-emitting backlight according to claim 3, wherein the bottom case has two outlets that mate with the two solder bumps.
5. A seamless side-emitting backlight according to claim 3, wherein the light guide plate has a first recess for avoiding the LED beads during installation.
6. A seamless side-emitting backlight according to claim 1, wherein the bottom case has a limiting protrusion for engaging the light source in the gap.
7. A seamless side-emitting backlight according to claim 6, wherein the reflective layer has a second clearance groove for engaging with the retaining bump.
8. A seamless side-lit backlight as claimed in claim 1, wherein the back of the bottom shell is provided with an adhesive layer to facilitate mounting of the side-lit backlight.
9. The seamless side-lit backlight of claim 8, wherein the adhesive layer is double-sided tape.
10. A seamless side-emitting backlight according to claim 1, wherein the sum of the heights of the reflective layer, light guide plate, and diffuser layer is equal to the depth of the recessed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275759.5U CN210294756U (en) | 2019-08-06 | 2019-08-06 | Seamless side-emitting backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275759.5U CN210294756U (en) | 2019-08-06 | 2019-08-06 | Seamless side-emitting backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210294756U true CN210294756U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921275759.5U Active CN210294756U (en) | 2019-08-06 | 2019-08-06 | Seamless side-emitting backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210294756U (en) |
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2019
- 2019-08-06 CN CN201921275759.5U patent/CN210294756U/en active Active
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