CN210294754U - Backlight source structure with inclined light inlet - Google Patents
Backlight source structure with inclined light inlet Download PDFInfo
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- CN210294754U CN210294754U CN201921235443.3U CN201921235443U CN210294754U CN 210294754 U CN210294754 U CN 210294754U CN 201921235443 U CN201921235443 U CN 201921235443U CN 210294754 U CN210294754 U CN 210294754U
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- light
- guide plate
- light guide
- led
- backlight
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- 238000009792 diffusion process Methods 0.000 claims abstract description 12
- 235000009537 plain noodles Nutrition 0.000 claims abstract description 9
- 239000011324 bead Substances 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a backlight source structure with inclined light inlet, which comprises a white reflecting sheet, a light guide plate, a lower diffusion film, a lower prism sheet, an upper prism sheet and an upper diffusion film which are arranged from bottom to top in sequence; the light guide plate is a flat plate, the left side surface and the right side surface of the light guide plate are light incident surfaces, the left side and the right side of the light guide plate are respectively provided with an LED light source, and one side of each LED light source, which is back to the light incident surfaces, is provided with a reflector; two income plain noodles slope settings of light guide plate, the LED light source is parallel with the income plain noodles that correspond. The backlight source structure has high brightness of emergent light.
Description
Technical Field
The utility model relates to a side income formula backlight technical field especially relates to a backlight structure of light is advanced in slope.
Background
As shown in fig. 5, the conventional side-in backlight structure includes a white light-reflecting sheet 1 ', a wedge-shaped light guide plate 2', a lower diffusion film 3 ', a lower prism sheet 4', an upper prism sheet 5 'and an upper diffusion film 6' which are sequentially disposed from bottom to top; the thicker side surface of the wedge-shaped light guide plate 2 ' is a light incident surface 2.1 ', and an LED light source 7 ' is arranged on the side opposite to the light incident surface; a reflecting cover 8' is arranged on one side of the LED light source back to the light incident surface; the bottom surface of the wedge-shaped light guide plate 2 'is printed with reflective dots 2.2'. After entering the wedge-shaped light guide plate 2 ', the light is reflected and scattered by the reflector 1' and the reflective dots 2.2 'and finally emitted from the upper surface of the wedge-shaped light guide plate 2'. Since the inclined surface of the wedge-shaped light guide plate 2' is required for reflection, the LED light sources can be arranged only on the thicker side, and cannot be arranged on the other side, so that the brightness of the backlight is insufficient, and the shortage is particularly obvious in the case of a large size.
In some side-in backlight structures, in order to increase the number of LED light sources, the wedge-shaped light guide plate 2' in the backlight structure is replaced by a flat light guide plate, and LED light sources are disposed on two sides of the light guide plate, but the LED light sources are directly incident on the light guide plate, and a part of light rays are nearly parallel to the upper and lower surfaces of the light guide plate and cannot be reflected, and the part of light rays cannot be effectively utilized, so that the brightness of the backlight is not ideal.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
To solve the problems existing in the prior art, the present invention provides a backlight structure with inclined light inlet, aiming to overcome the problem of unsatisfactory brightness of the existing side-in backlight structure.
The technical scheme of the utility model as follows:
a backlight source structure with inclined light inlet comprises a white light reflecting sheet, a light guide plate, a lower diffusion film, a lower prism sheet, an upper prism sheet and an upper diffusion film which are arranged in sequence from bottom to top; the light guide plate is a flat plate, the left side surface and the right side surface of the light guide plate are light incident surfaces, the left side and the right side of the light guide plate are respectively provided with an LED light source, and one side of each LED light source, which is back to the light incident surfaces, is provided with a reflector; two income plain noodles slope settings of light guide plate, the LED light source is parallel with the income plain noodles that correspond.
In the backlight source structure with inclined light inlet, the LED light source is an LED lamp strip and comprises a PCB and a plurality of LED lamp beads arranged on the PCB.
In the backlight source structure with inclined light inlet, each light inlet surface is divided into a plurality of light inlet areas along the length direction, and the inclination angles of the light inlet areas are not completely the same; the LED lamp strip is provided with at least one LED lamp bead corresponding to each light entering area, and the LED lamp beads are parallel to the corresponding light entering areas.
In the backlight source structure with inclined light inlet, a cushion block is connected between each LED lamp bead and the PCB, and the surface of each cushion block facing the LED lamp beads is parallel to the corresponding light inlet area.
In the backlight source structure with inclined light inlet, the bottom of the light guide plate is provided with reflection mesh points which are arranged in multiple rows, and any two adjacent rows of the reflection mesh points are staggered.
In the backlight source structure with inclined light entering, the size of the reflection mesh point in the light guide plate is larger as the reflection mesh point is closer to the middle part.
In the backlight source structure with inclined light inlet, the front side surface and the rear side surface of the light guide plate are respectively adhered with a reflecting film.
In the backlight source structure with inclined light inlet, the upper surface of the lower prism sheet and the upper surface of the upper prism sheet are both provided with sawtooth ridges, and the vertex angle of the sawtooth ridges is 90 degrees; the sawtooth ridges of the lower prism sheet and the sawtooth ridges of the upper prism sheet are perpendicular to each other.
The utility model has the advantages that:
in the backlight structure of light is advanced in the slope, set up the light guide plate into flat-plate to all set up the LED light source in its both sides, thereby improved the quantity of LED light source, and set up the light homoenergetic that can make among the entering light guide plate to the slope of LED light source and reflected, make light obtain make full use of, compare with current side income formula backlight structure, its brightness is higher.
Drawings
Fig. 1 is a schematic structural diagram of a backlight structure with oblique light entering according to the present invention.
Fig. 2 is a perspective view of the light guide plate in the backlight structure with inclined light entering according to the present invention.
Fig. 3 is a bottom view of the light guide plate in the backlight structure with inclined light inlet according to the present invention.
Fig. 4 is a side view of the LED light source in the oblique light-entering backlight structure of the present invention.
Fig. 5 is a schematic structural diagram of a conventional side-in backlight structure.
Detailed Description
In order to make the purpose, technical solution and effect of the present invention clearer and more clear, the following examples are provided for further detailed description of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
For convenience of description, the above refers to the direction of light emission in use, i.e., the upper side, the lower side and the upper side in fig. 1 are reversed; the left and right sides are the left and right sides in fig. 1; the front and rear are directions perpendicular to the paper surface in fig. 1.
Referring to fig. 1-2, the backlight structure with inclined light input provided by the present invention comprises a white reflective sheet 1, a light guide plate 2, a lower diffusion film 3, a lower prism sheet 4, an upper prism sheet 5 and an upper diffusion film 6, which are sequentially arranged from bottom to top; the light guide plate 2 is a flat plate, the left side surface and the right side surface of the light guide plate are light incident surfaces 2.1, the left side and the right side of the light guide plate are respectively provided with an LED light source 7 (a white light LED light source), and one side of each LED light source, which is back to the light incident surface, is provided with a reflector 8; two income plain noodles 2.1 slopes of light guide plate set up, LED light source 7 is parallel with income plain noodles 2.1 that corresponds (namely LED light source 7 also slopes to set up and its inclination is the same with the inclination that corresponds income plain noodles 2.1).
In the backlight source structure, the light guide plate 2 is arranged into a flat plate shape, and the LED light sources 7 are arranged on two sides of the light guide plate, so that the number of the LED light sources is increased, and the brightness can be improved; the LED light source 7 is obliquely arranged, so that light rays entering the light guide plate 2 can be reflected, and the light rays are fully utilized; the light incident surface 2.1 is further inclined and is parallel to the LED light source 7, so that the quantity of light reflected by the light incident surface 2.1 can be reduced, and the utilization rate of the light is further improved; compared with the existing side-in backlight source structure, the backlight source has higher brightness and can be applied to larger LCD displays.
Further, as shown in fig. 3 and 4, the LED light source 7 is an LED strip, and includes a PCB board 7.1 and a plurality of LED beads 7.2 disposed on the PCB board.
In a preferred embodiment, as shown in fig. 2 and 4, each light incident surface 2.1 is divided into a plurality of light incident regions 2.1a along the length direction, and the inclination angles of the light incident regions are not completely the same (i.e. the angles of part of the light incident regions may be the same); the LED lamp strip is provided with at least one LED lamp bead 7.2 corresponding to each light entering area 2.1a, and the LED lamp beads are parallel to the corresponding light entering areas. The light emitted by the LED light source 7 can be emitted into the light guide plate 2 at different angles, and the light can be reflected and scattered in the light guide plate 2 at different angles, so that the uniformity of emergent light can be greatly improved.
In this embodiment, see fig. 4, be connected with a cushion 7.3 between every LED lamp pearl 7.2 and the PCB board 7.1, the face of cushion orientation LED lamp pearl is parallel with the income light zone 2.1a that corresponds. The cushion block 7.3 is additionally arranged, so that the LED lamp bead 7.2 can be ensured to be parallel to the light entering area 2.1a, and the cushion block 7.3 can be made of high-density and high-specific heat capacity materials such as lead and copper, so that the heat sink effect can be achieved, and the heating condition can be improved.
Further, as shown in fig. 1 and 3, the bottom of the light guide plate 2 is provided with reflective mesh points 2.2, the reflective mesh points are arranged in multiple rows, and any two adjacent rows of reflective mesh points are staggered with each other. The reflection lattice points are used for scattering light rays so as to improve the uniformity of emergent light, and the emergent light can be further improved by arranging the reflection lattice points in a staggered mode.
In order to further improve the uniformity of the emergent light, the size of the reflective dots 2.2 in the light guide plate 2 is larger closer to the middle part, as shown in fig. 3.
To avoid light leakage, reflective films 9 are attached to both front and rear side surfaces of the light guide plate 2. The reflective film 9 is preferably a white reflective film. In order to further improve the brightness, the front and rear side surfaces of the light guide plate 2 may be provided as light incident surfaces, and the LED light sources 7 may be provided on the front and rear sides, and in this case, the reflective film 9 is not required.
In addition, the upper surface of the lower prism sheet 4 and the upper surface of the upper prism sheet 5 are both provided with sawtooth ridges, and the vertex angle of the sawtooth ridges is 90 degrees; the sawtooth ridges of the lower prism sheet and the sawtooth ridges of the upper prism sheet are perpendicular to each other. The lower diffusion film 3 and the upper diffusion film 6 are translucent PC films.
It should be understood that the application of the present invention is not limited to the above examples, and that modifications and variations can be made by persons skilled in the art in light of the above teachings, and all such modifications and variations are intended to fall within the scope of the present invention.
Claims (8)
1. A backlight source structure with inclined light inlet comprises a white light reflecting sheet, a light guide plate, a lower diffusion film, a lower prism sheet, an upper prism sheet and an upper diffusion film which are arranged in sequence from bottom to top; the LED light source is characterized in that the light guide plate is a flat plate, the left side surface and the right side surface of the light guide plate are light incident surfaces, the left side and the right side of the light guide plate are respectively provided with an LED light source, and one side of each LED light source, which is back to the light incident surface, is provided with a reflector; two income plain noodles slope settings of light guide plate, the LED light source is parallel with the income plain noodles that correspond.
2. The backlight source structure of claim 1, wherein the LED light source is an LED strip comprising a PCB and a plurality of LED beads disposed on the PCB.
3. The backlight structure of claim 2, wherein each light incident surface is divided into a plurality of light incident regions along the length direction, and the inclined angles of the light incident regions are not completely the same; the LED lamp strip is provided with at least one LED lamp bead corresponding to each light entering area, and the LED lamp beads are parallel to the corresponding light entering areas.
4. The backlight source structure of claim 3, wherein a spacer is connected between each LED lamp bead and the PCB, and a surface of the spacer facing the LED lamp bead is parallel to the corresponding light incident area.
5. The backlight structure of claim 1, wherein the bottom of the light guide plate is provided with reflective dots, the reflective dots are arranged in multiple rows, and any two adjacent rows of reflective dots are staggered with respect to each other.
6. The structure of claim 5, wherein the reflective dots are larger in size closer to the middle of the light guide plate.
7. The backlight structure of claim 1, wherein reflective films are attached to the front and back sides of the light guide plate.
8. The backlight source structure of claim 1, wherein the upper surface of the lower prism sheet and the upper surface of the upper prism sheet are both provided with sawtooth ridges, and the vertex angle of the sawtooth ridges is 90 degrees; the sawtooth ridges of the lower prism sheet and the sawtooth ridges of the upper prism sheet are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921235443.3U CN210294754U (en) | 2019-08-01 | 2019-08-01 | Backlight source structure with inclined light inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921235443.3U CN210294754U (en) | 2019-08-01 | 2019-08-01 | Backlight source structure with inclined light inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210294754U true CN210294754U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921235443.3U Expired - Fee Related CN210294754U (en) | 2019-08-01 | 2019-08-01 | Backlight source structure with inclined light inlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210294754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051639A (en) * | 2020-09-11 | 2020-12-08 | 深圳市利航电子有限公司 | Bright backlight source structure |
-
2019
- 2019-08-01 CN CN201921235443.3U patent/CN210294754U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051639A (en) * | 2020-09-11 | 2020-12-08 | 深圳市利航电子有限公司 | Bright backlight source structure |
| CN112051639B (en) * | 2020-09-11 | 2022-03-11 | 深圳市利航电子有限公司 | Bright backlight source structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |