CN114613267A - Backlight lamp plate, backlight module and display - Google Patents
Backlight lamp plate, backlight module and display Download PDFInfo
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- CN114613267A CN114613267A CN202210234954.3A CN202210234954A CN114613267A CN 114613267 A CN114613267 A CN 114613267A CN 202210234954 A CN202210234954 A CN 202210234954A CN 114613267 A CN114613267 A CN 114613267A
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- led lamp
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- transparent substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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Abstract
The invention discloses a backlight lamp panel, a backlight module and a display, wherein the backlight lamp panel comprises a plurality of LED lamp beads arranged in an array manner, a transparent substrate and a plurality of light absorption layers; the LED lamp beads and the light absorption layers are arranged on the transparent substrate and are respectively positioned on two opposite sides of the transparent substrate; and a light absorbing layer is uniformly arranged at the overlapping part of the light reflecting areas of every two adjacent LED lamp beads so as to absorb light rays at the overlapping part of the light reflecting areas of the two adjacent LED lamp beads. According to the invention, the light absorbing layer is uniformly arranged at the overlapped part of the light reflecting areas of every two adjacent LED lamp beads, and the light at the overlapped part of the light reflecting areas of the two adjacent LED lamp beads is absorbed through the light absorbing layer, so that the brightness of the overlapped part of the light reflecting areas of the two adjacent LED lamp beads is reduced, the brightness of the boundary of the light reflecting areas of the LED lamp beads is homogenized, and the generation of local bright spots on the light source surface of the backlight lamp panel is avoided.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a backlight panel, a backlight module and a display.
Background
The display screen size of present display is all great, and in order to match the display screen size to and guarantee normal display brightness, the LED lamp pearl that arranges on the backlight lamp plate is in large quantity, and arranges densely, and this reflection of light region that has just LED to two adjacent LED lamp pearls has the overlap, causes the local bright spot of light source face.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a backlight panel, a backlight module and a display, aiming at reducing the brightness of the overlapping part of the reflective regions between adjacent LED lamp beads, so as to avoid local bright spots on the light source surface.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a backlight lamp panel comprises a plurality of LED lamp beads arranged in an array, a transparent substrate and a plurality of light absorption layers; the LED lamp beads and the light absorption layers are arranged on the transparent substrate and are respectively positioned on two opposite sides of the transparent substrate; and a light absorbing layer is uniformly arranged at the overlapping part of the light reflecting areas of every two adjacent LED lamp beads so as to absorb light rays at the overlapping part of the light reflecting areas of the two adjacent LED lamp beads.
The backlight panel, wherein, the length on light-absorbing layer equals the border length in the reflection of light region of LED lamp pearl.
The backlight plate, wherein, every two adjacent light absorption layers homogeneous phase are connected.
The backlight panel also comprises a plurality of reflecting layers, and the reflecting layers are arranged on the transparent substrate and are positioned on the same side as the light absorbing layers; and a light reflecting layer is uniformly distributed in an area surrounded by the light absorbing layer on the periphery of each LED lamp bead.
The backlight panel is characterized in that a supporting structure is arranged between the reflecting layer and the transparent substrate; the one side of bearing structure towards the reflector layer is the protruding face of arc, the protruding face of arc is laminated with the reflector layer mutually.
The backlight board, wherein the support structure comprises an optical adhesive layer and a transparent adhesive layer; the optical adhesive layer is attached to the transparent substrate; the projection of the LED lamp beads corresponding to the reflecting layer on one side, facing the reflecting layer, of the transparent substrate is overlapped with the optical adhesive layer; the transparent adhesive layer covers the optical adhesive layer, and a part of the transparent adhesive layer is attached to the transparent substrate.
The backlight panel, it still includes the inoxidizing coating, the inoxidizing coating covers a plurality of light-absorbing layers with a plurality of reflection of light layers.
The backlight board, wherein, the transparent base plate is also provided with a light reflection layer; the light reflecting layer and the LED lamp beads are positioned on the same side; the LED lamp bead is characterized in that a plurality of avoiding holes are formed in the light reflecting layer, correspond to the LED lamp beads one to one and are used for avoiding the LED lamp beads.
A backlight module comprises the backlight lamp panel.
A display comprises the backlight module.
Has the advantages that: according to the invention, the light absorbing layer is uniformly arranged at the overlapped part of the light reflecting areas of every two adjacent LED lamp beads, and the light at the overlapped part of the light reflecting areas of the two adjacent LED lamp beads is absorbed through the light absorbing layer, so that the brightness of the overlapped part of the light reflecting areas of the two adjacent LED lamp beads is reduced, the brightness of the boundary of the light reflecting areas of the LED lamp beads is homogenized, and the generation of local bright spots on the light source surface of the backlight lamp panel is avoided.
Drawings
FIG. 1 is a top view of the backlight panel of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the backlight panel of the present invention;
FIG. 3 is a top view of the assembly of the transparent substrate and the plurality of LED beads of the present invention;
FIG. 4 is a side view of the assembly of the transparent substrate and the plurality of LED beads of the present invention;
FIG. 5 is a schematic view of the distribution of the light absorbing layer and the light reflecting layer on the transparent substrate according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention provides a backlight panel, as shown in fig. 1 and 2, the backlight panel includes: the LED lamp comprises a plurality of LED lamp beads 1, a plurality of light absorption layers 3 and a transparent substrate 2; the transparent substrate 2 is used for bearing the LED lamp beads; as shown in fig. 1 and 3, the plurality of LED lamp beads are arranged in an array. The LED lamp beads and the light absorption layers are arranged on the transparent substrate 2; a plurality of LED lamp pearls are located one side of transparent substrate 2, and a plurality of light-absorbing layers are located transparent substrate 2 on with the opposite one side of a plurality of LED lamp pearls, thereby be convenient for right a plurality of light-absorbing layers carry out the silk screen printing, avoid a plurality of LED lamp pearls are to the silk screen a plurality of light-absorbing layers cause the interference.
The transparent substrate 2 is a transparent glass substrate; the transparent substrate 2 is made of a transparent material, so that light emitted by the LED lamp beads can penetrate through the transparent substrate 2 and is emitted from one side, far away from the LED lamp beads, of the transparent substrate 2, a plurality of light reflecting areas are formed on one side, far away from the LED lamp beads, of the transparent substrate 2, each light reflecting area corresponds to one LED lamp bead, and the light reflecting areas of two adjacent LED lamp beads can be overlapped. The LED lamp beads are located in the light reflecting areas corresponding to the LED lamp beads in the projection of the surface, far away from the transparent substrate 2, of the transparent substrate.
According to the invention, the light absorbing layer 3 is uniformly arranged at the overlapped part of the light reflecting areas of every two adjacent LED lamp beads, and the light absorbing layer 3 is used for absorbing light at the overlapped part of the light reflecting areas of the two adjacent LED lamp beads, so that the brightness of the overlapped part of the light reflecting areas of the two adjacent LED lamp beads is reduced, the brightness of the boundary brightness of the light reflecting areas of the LED lamp beads is homogenized, and the generation of local bright spots on the light source surface of the backlight lamp panel is avoided.
Further, the length of the light absorption layer 3 is equal to the boundary length of the light reflection region of the LED lamp beads, so that the light shape of two adjacent LED lamp beads is limited, light rays emitted by the LED lamp beads are prevented from leaking to other regions, the light crosstalk phenomenon is avoided, and the backlight contrast of the backlight lamp panel is further improved.
As shown in fig. 1, every two adjacent light absorption layers 3 are connected, so that the light rays at the overlapped part of the light reflecting areas between the left and right two adjacent LED lamp beads and the upper and lower two adjacent LED lamp beads in the plurality of LED lamp beads arranged in an array can be absorbed by the corresponding light absorption layers 3, and even between the two LED lamp beads arranged in an oblique line, the light absorption layers can be absorbed by the corresponding light absorption layers 3, so that the light shape limiting effect of the plurality of LED lamp beads on the plurality of light absorption layers is improved.
In a specific embodiment of the present invention, as shown in fig. 4, the LED lamp bead 1 is a rectangular LED lamp bead, that is, a light reflection region formed by the LED lamp bead 1 on the transparent substrate 2 is a rectangular light reflection region. Further, the side, which is not adjacent to other LED lamp beads, of the LED lamp bead located at the outermost periphery of the LED lamp bead array is also provided with a light absorption layer 3, and the light absorption layer 3 is arranged along the boundary of the light reflection region of the corresponding LED lamp bead. Further, all light absorption layers 3 on the periphery of each LED lamp bead are sequentially connected end to end, so that the LED lamp bead 1 is positioned in a rectangular area formed by surrounding four light absorption layers 3 on the periphery of the LED lamp bead; and a light absorption layer 3 is shared between two adjacent LED lamp beads.
In one embodiment of the present invention, the light absorbing layer 3 is a gray ink light absorbing layer 3.
In another embodiment of the present invention, the light absorbing layer 3 is a black ink light absorbing layer 3.
As shown in fig. 2 and 5, the backlight panel further includes a plurality of light reflecting layers 4 disposed on the transparent substrate 2 and located on the same side as the plurality of light absorbing layers; and a light reflecting layer 4 is arranged in an area surrounded by the light absorbing layer 3 on the periphery of each LED lamp bead. Namely, the reflecting layer 4 corresponds to the reflecting area of the LED lamp bead 1; each reflecting layer 4 reflects light in the reflecting area of the LED lamp beads 1 to the direction of the transparent substrate 2 close to the LED lamp beads 1 from the side of the transparent substrate 2 far away from the LED lamp beads 1, so that the light emitting efficiency of the backlight lamp panel is improved. The reflecting layer 4 covers a rectangular area surrounded by four light absorption layers 3 at the periphery of the reflecting layer 4, and the periphery of the reflecting layer 4 is respectively attached to the light absorption layers 3 positioned at the periphery of the reflecting layer.
In one embodiment of the present invention, the reflective layer 4 is a mirror silver reflective layer.
Further, as shown in fig. 2, a support structure 5 is disposed between the reflective layer 4 and the transparent substrate 2; namely, the transparent substrate 2 is further provided with a plurality of supporting structures 5, and each supporting structure 5 corresponds to one light reflecting layer 4. One side of the supporting structure 5 is attached to the transparent substrate 2 and covers a rectangular area surrounded by four light absorption layers 3 on the periphery of the supporting structure; the other side of the supporting structure 5 is used for supporting the reflecting layer 4, so that the reflecting layer 4 faces to one side of the transparent substrate 2 is an arc-shaped surface, the arc-shaped surface faces away from the direction of the transparent substrate 2, and the light is reflected to the transparent substrate 2 towards one side of the LED lamp beads 1 through the reflecting layer 4, and the light condensation effect is improved.
Specifically, one surface of the supporting structure 5 facing the reflective layer 4 is an arc-shaped convex surface 6, as shown in fig. 2, the arc-shaped convex surface 6 is attached to the reflective layer 4.
The support structure 5 comprises an optical adhesive layer 51 and a transparent adhesive layer 52; the optical adhesive layer 51 is attached to the transparent substrate 2; the LED lamp pearl that reflector layer 4 corresponds is in the projection of transparent substrate 2 towards reflector layer 4 one side with optics glue film 51 overlaps, makes optics glue film 51 is corresponding with the non-luminous one side of LED lamp pearl 1, optics glue film 51 only is used for right the support of bottoming is carried out to transparent glue film 52, and can not produce the interference to the light that reflector layer 4 reflects.
The transparent adhesive layer 52 covers the optical adhesive layer 51, and a part of the transparent adhesive layer 52 is attached to the transparent substrate 2. Further, the arc convex surface with transparent substrate 2 is crossing for all light can obtain the reflection of reflector layer 4 in the rectangle region that four light-absorbing layers 3 of reflector layer 4 periphery enclose, with further promotion reflector layer 4 to the reflection and the gathering effect of 1 reflection of light region light of LED lamp pearl.
As shown in fig. 2, the backlight panel further includes a protective layer 7, and the protective layer 7 covers the light absorbing layers and the light reflecting layers. The protective layer 7 is used for protecting the plurality of light absorbing layers and the plurality of light reflecting layers from water. In an embodiment of the present invention, the protective layer 7 is a gray ink protective layer 7.
A light reflecting layer is also arranged on the transparent substrate 2; the light reflecting layer and the LED lamp beads are positioned on the same side; be provided with a plurality of holes of keeping away on the light reflection stratum, every is kept away the hole and all corresponds and holds a LED lamp pearl to keep away the position to LED lamp pearl. Light rays emitted by the side surfaces of the LED lamp beads can be emitted to the transparent substrate 2, and the light rays obtained by the transparent substrate 2 facing one side of the LED lamp beads are reflected through the light ray reflecting layer, so that the luminous efficiency of the backlight lamp panel is further improved. In an embodiment of the invention, the light reflecting layer is a white fluorescent reflecting layer.
The invention also provides a backlight module which comprises the backlight lamp panel.
The invention also provides a display, which comprises the backlight module.
In summary, the invention provides a backlight lamp panel, a backlight module and a display, wherein a light absorption layer is uniformly arranged at the overlapping position of the light reflection areas of every two adjacent LED lamp beads, and light rays at the overlapping position of the light reflection areas of the two adjacent LED lamp beads are absorbed by the light absorption layer, so that the brightness of the overlapping position of the light reflection areas of the two adjacent LED lamp beads is reduced, the brightness of the boundary of the light reflection areas of the LED lamp beads is uniform, and the generation of local bright spots on the light source surface of the backlight lamp panel is avoided.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A backlight lamp panel comprises a plurality of LED lamp beads arranged in an array, and is characterized by further comprising a transparent substrate and a plurality of light absorption layers; the LED lamp beads and the light absorption layers are arranged on the transparent substrate and are respectively positioned on two opposite sides of the transparent substrate; and a light absorbing layer is uniformly arranged at the overlapping part of the light reflecting areas of every two adjacent LED lamp beads so as to absorb light rays at the overlapping part of the light reflecting areas of the two adjacent LED lamp beads.
2. The backlight panel of claim 1, wherein the light absorbing layer has a length equal to a boundary length of the light reflecting region of the LED lamp bead.
3. The backlight panel of claim 1, wherein each adjacent two of the light absorbing layers are connected.
4. The backlight panel of claim 1, further comprising a plurality of light reflecting layers disposed on the transparent substrate on a same side as the plurality of light absorbing layers; and a light reflecting layer is uniformly distributed in an area surrounded by the light absorbing layer on the periphery of each LED lamp bead.
5. The backlight panel of claim 4, wherein a support structure is disposed between the reflective layer and the transparent substrate; the one side of bearing structure towards the reflector layer is the protruding face of arc, the protruding face of arc is laminated with the reflector layer mutually.
6. The backlight panel of claim 5, wherein the support structure comprises an optical glue layer and a transparent glue layer; the optical adhesive layer is attached to the transparent substrate; the projection of the LED lamp beads corresponding to the reflecting layer on one side, facing the reflecting layer, of the transparent substrate is overlapped with the optical adhesive layer; the transparent adhesive layer covers the optical adhesive layer, and a part of the transparent adhesive layer is attached to the transparent substrate.
7. The backlight panel of claim 4, further comprising a protective layer covering the plurality of light absorbing layers and the plurality of light reflecting layers.
8. The backlight panel of claim 1, wherein a light reflecting layer is further disposed on the transparent substrate; the light reflecting layer and the LED lamp beads are positioned on the same side; the LED lamp bead is characterized in that a plurality of avoiding holes are formed in the light reflecting layer, correspond to the LED lamp beads one to one and are used for avoiding the LED lamp beads.
9. A backlight module characterized in that it comprises a backlight panel according to any one of claims 1 to 8.
10. A display comprising the backlight module according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210234954.3A CN114613267B (en) | 2022-03-09 | 2022-03-09 | Backlight lamp panel, backlight module and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210234954.3A CN114613267B (en) | 2022-03-09 | 2022-03-09 | Backlight lamp panel, backlight module and display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114613267A true CN114613267A (en) | 2022-06-10 |
| CN114613267B CN114613267B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210234954.3A Active CN114613267B (en) | 2022-03-09 | 2022-03-09 | Backlight lamp panel, backlight module and display |
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| CN110969952A (en) * | 2018-09-28 | 2020-04-07 | 深圳光峰科技股份有限公司 | LED display screen |
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| CN114613267B (en) | 2023-09-19 |
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