CN212694720U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN212694720U CN212694720U CN202021651048.6U CN202021651048U CN212694720U CN 212694720 U CN212694720 U CN 212694720U CN 202021651048 U CN202021651048 U CN 202021651048U CN 212694720 U CN212694720 U CN 212694720U
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Abstract
The utility model discloses a backlight module and display device, backlight module includes: a substrate; a plurality of rows of light emitting elements arranged on the substrate at intervals; the first reflector plate is arranged on the substrate and provided with a protruding part protruding towards the light emitting direction of the light emitting elements, and the protruding part is arranged at least between the two light emitting elements with the largest distance; the first reflector plate is arranged between the two wider light-emitting elements and provided with a convex bulge; the bulge is protruding towards the light-emitting direction, the light of light-emitting component side transmission shines protrudingly on the first reflector plate, through the reflection of first reflector plate, emits most light reflection for reverse substrate direction, so, solves the problem of middle dark band.
Description
Technical Field
The utility model belongs to the technical field of show, especially, relate to a backlight module and display device.
Background
With the rapid development of LED display technology, direct-type backlight is widely applied to backlight display modules with good light-emitting viewing angle, simple structure and low cost. Based on low-cost backlight unit design, thereby in order to save the PCB area reduce cost, backlight unit adopts the horizontal row setting of light emitting component, but this design can bring following problem: the problem of the lamp strip of horizontal row setting forms the shadow of four corners easily, so can arrange the setting near the border position with the lamp strip, when the lamp strip is close to border position, the distance between lamp strip and the lamp strip will be far away, and the light energy distribution between lamp strip and the lamp strip will be inhomogeneous, takes the formation dark zone in the centre, causes the poor scheduling problem of visual effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses main aim at provides a backlight unit aims at improving above defect, solves the problem of middle dark zone.
The utility model provides an above-mentioned technical problem's technical scheme be, provide a backlight unit, backlight unit includes: a substrate; a plurality of rows of light emitting elements arranged on the substrate at intervals; the first reflector plate is arranged on the substrate and provided with a protruding portion extending towards the light emitting direction of the light emitting elements, and the protruding portion is arranged between two adjacent rows of the light emitting elements.
Further, the first reflection sheet comprises a first inclined plate and a second inclined plate, one end of the first inclined plate is connected with the substrate, the other end of the first inclined plate extends away from the substrate and is connected with the second inclined plate, one end of the second inclined plate, which is away from the first inclined plate, extends towards the substrate and is connected with the substrate, and the inverted V-shaped protruding portion is formed.
Further, the first inclined plate forms a first angle with the substrate toward the second inclined plate, the first angle being greater than or equal to 5 degrees and less than or equal to 45 degrees.
Further, the second inclined plate forms a second angle with the substrate toward the first inclined plate, the second angle being greater than or equal to 5 degrees and less than or equal to 45 degrees.
Furthermore, the backlight module also comprises a supporting plate; the supporting plate is arranged on the surface of the first reflector plate facing to the substrate direction.
Further, the light emitting elements in each row are arranged in parallel, and the protrusion is arranged at a position 1/2 of the distance between the two rows of the light emitting elements.
Further, the backlight module further comprises: a diffusion plate disposed on a light emitting side of the light emitting element; the bulge deviates from the substrate direction and is provided with a connecting plate, extends towards the diffusion plate and is abutted against the diffusion plate.
Further, the connecting plate is a transparent glass plate or a transparent plastic plate.
Further, the connecting plate is provided with a second reflecting sheet facing the light emitting element.
A display device comprises a display panel and the backlight module, wherein the display panel is arranged on the backlight module.
The embodiment of the utility model provides a backlight module and a display device, through setting up the first reflector plate between two broad light-emitting components, the first reflector plate has the bellying; the bulge is protruding towards the light-emitting direction, the light of light-emitting component side transmission shines protrudingly on the first reflector plate, through the reflection of first reflector plate, emits most light reflection for reverse substrate direction, so, solves the problem of middle dark band.
Drawings
Fig. 1 is a schematic cross-sectional view of a backlight module according to the present invention;
fig. 2 is a schematic front structural view of the backlight module according to the present invention;
fig. 3 is a schematic view of a usage status structure of the backlight module of the present invention.
The reference numbers illustrate:
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. 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 technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-3, a backlight module 100 includes: a substrate 11; a plurality of rows of light emitting elements 21, the plurality of rows of light emitting elements 21 being disposed on the substrate 11 at intervals; and a first reflection sheet 41, the first reflection sheet 41 is disposed on the substrate 11, the first reflection sheet 41 has a protrusion 42 extending toward the light emitting direction of the light emitting element 21, and the protrusion 42 is disposed between two adjacent rows of the light emitting elements 21.
It should be noted that, in the present embodiment, the backlight module employs the light emitting elements 21 arranged in the horizontal rows and the light emitting elements 21 arranged in the horizontal rows are prone to form a dark shadow at four corners, so that when the light emitting elements 21 are arranged close to the edge positions, the distance between the light emitting elements 21 arranged in the horizontal rows is far, the light energy distribution in the middle of the light emitting elements 21 is uneven, and a dark band is formed in the middle region. The first reflecting sheet 41 is arranged between two rows of light-emitting elements 21, the first reflecting sheet 41 is provided with a convex part 42, the convex part 42 is convex towards the light-emitting direction, light emitted from the side surface of each light-emitting element 21 irradiates on the first reflecting sheet 41, and most of light is reflected to the direction of the reverse substrate 11 and is emitted out through reflection of the first reflecting sheet 41, so that the problem of a middle dark band is solved;
in a possible realization, the substrates 11 are all provided with a first reflective sheet 41, so that the light can be totally reflected to the light outlet; or, only the first reflection sheet 41 is arranged between the two light emitting elements 21, so that the arrangement of the first reflection sheet 41 can be reduced, and the sufficient intermediate illumination between the two light emitting elements 21 with a longer distance can be ensured, thereby saving materials.
In a possible implementation manner, the backlight module 100 is provided with 4 light emitting elements 21, one raised first reflective sheet 41 is disposed between every two rows of the light emitting elements 21, and three raised portions 42 are provided; or, a protruding portion 42 is arranged between the light emitting elements 21 on the two sides, and no protruding portion 42 is arranged between the two rows of light emitting elements 21 in the middle, so that two protruding portions 42 are arranged; alternatively, only one projection 42 is provided between two rows of light emitting elements 21 having a large pitch; thus, sufficient middle illumination between two rows of light-emitting elements 21 can be ensured, and the arrangement of the convex part 42 can be saved; when the pitch between the two rows of light emitting elements 21 reaches a certain degree, the convex portion 42 is provided between the two rows of light emitting elements 21.
Furthermore, the highest point of the protrusion of the protruding portion 42 and the substrate 11 form two arc-shaped plates facing opposite to the substrate 11, and the radian of the arc-shaped plates can be adaptively adjusted according to the distance between the light emitting elements 21 and the distance between the arc-shaped plates and the light emitting elements 21, so that the light emitted from the side surfaces of the light emitting elements 21 is reflected to the middle of the two light emitting elements 21; when the distance between the protruding portion 42 and the light emitting elements 21 is fixed, the larger the distance between two rows of light emitting elements 21 is, the larger the radian of the arc plate is, so that the first reflection sheet 41 can reflect the side light emitted by the light emitting elements 21 to the middle position and emit the side light away from the substrate 11, and thus, the light energy irradiated between the two rows of light emitting elements 21 is sufficient, and the problem of a middle dark band is prevented. When the distance between two rows of light-emitting elements 21 is fixed, the larger the distance between the protruding part 42 and the light-emitting elements 21 is, the larger the radian of the arc plate is, the first reflection sheet 41 can reflect the side light emitted by the light-emitting elements 21 to the middle position and emit the side light away from the substrate 11, so that the light energy irradiated between the two rows of light-emitting elements 21 is sufficient, and the problem of a middle dark band is prevented.
Further, the highest point of the protrusion of the protruding portion 42 forms two linear straight plates with the substrate 11, and the straight plates form an angle with the substrate 11 toward the other straight plate, and the angle can be set according to the distance between two light emitting elements 21 and the distance between the protruding portion 42 and two rows of light emitting elements 21.
In a possible implementation, the light emitting elements 21 are arranged in a lamp shape, and the first reflective sheet 41 is disposed between two rows of light emitting elements 21 having a larger pitch of the light emitting elements 21 in a stripe.
Further, as shown in fig. 1, the first reflection sheet 41 includes a first inclined plate 43 and a second inclined plate 44, the first inclined plate 43 has one end connected to the substrate 11 and the other end extending away from the substrate 11 and connected to the second inclined plate 44, and the second inclined plate 44 has one end extending away from the first inclined plate 43 toward the substrate 11 and connected to the substrate 11, so as to form the protrusion 42 of an inverted "V" shape.
In the present embodiment, the first inclined plate 43 and the second inclined plate 44 form an inverted "V" shape, and both the side lights of the light emitting elements 21 can be reflected between two light emitting elements 21, and the light emitted from the side of the light emitting elements 21 can be largely uniformly reflected between two rows of light emitting elements 21, thereby solving the problem of the intermediate dark band caused by the excessive pitch between two rows of light emitting elements 21.
Further, as shown in fig. 1, the first inclined plate 43 forms a first angle R1 with the substrate 11 toward the second inclined plate 44, and the first angle R1 is greater than or equal to 5 degrees and less than or equal to 45 degrees.
In this embodiment, when the first angle R1 is less than 5 degrees, the first inclined plate 43 and the second inclined plate 44 can receive less light emitted from the light emitting element 21, and reflect less light, so that the problem of the middle dark pocket cannot be changed, and when the first angle R1 is greater than 45 degrees, most of the light on the side of the light emitting element 21 will be reflected toward the light emitting element 21; preferably, the first inclined plate 43 forms a first angle R1 with the substrate 11 toward the second inclined plate 44, the first inclined plate 43 forms a first angle R1 with the substrate 11 toward the second inclined plate 44, the first angle R1 is greater than or equal to 5 degrees and less than or equal to 45 degrees, and the size of the first angle R1 can be adjusted according to the distance between two columns of light-emitting elements 21.
Further, as shown in fig. 1, the second inclined plate 44 forms a second angle R2 with the substrate 11 toward the first inclined plate 43, and the second angle R2 is greater than or equal to 5 degrees and less than or equal to 45 degrees.
In this embodiment, the second angle R2 is set in the same manner as the first angle R1, but the second angle R2 is set in the same manner or in a different manner from the first angle R1, depending on the distance between the first inclined plate 43 and the second inclined plate 44 and the light emitting element 21. Thus, the distance can be effectively utilized, and the corresponding angle is set, so that most of the light emitted from the side surface of the light emitting element 21 is uniformly reflected between the two light emitting elements 21, and the problem of the middle dark band caused by the overlarge distance between the two rows of light emitting elements 21 is solved.
Further, the backlight module 100 further includes a supporting plate 31; the support plate 31 is provided on a surface of the first reflection sheet 41 facing the substrate 11.
In the present embodiment, as shown in fig. 3, a through hole is formed in the supporting plate 31, so that the supporting plate 31 is conveniently disposed on the light emitting element 21, the light emitting element 21 can pass through the through hole and leak out of a surface of the supporting plate 31 away from the substrate 11, and the first reflective sheet 41 on the supporting plate 31 can effectively reflect light emitted by the lamp bead, thereby fully utilizing light resources; alternatively, the supporting plate 31 is directly disposed under the light emitting element 21, so that the working efficiency can be improved.
In one possible implementation, as shown in fig. 1, the support plate 31 is disposed only between two rows of the light emitting elements 21 for supporting the protruding portions 42 of the first reflection sheet 41.
Further, as shown in fig. 1 and 2, each row of the light emitting elements 21 is arranged in parallel, and the protrusion 42 is provided at a position 1/2 of the distance between the two rows of the light emitting elements 21;
in the present embodiment, in order to better reflect the light emitted from the light emitting elements 21, the protrusion 42 is provided at a position 1/2 of the distance between two rows of the light emitting elements 21; the protruding portion 42 is parallel to the light emitting element 21.
In one possible embodiment, depending on the shape of the lamp, if some of the light emitting elements 21 are not arranged in parallel, the protrusions 42 may be provided only at positions where the light emitting elements 21 have a large pitch.
Further, as shown in fig. 3, the backlight module 100 further includes: a diffusion plate 51, the diffusion plate 51 being disposed on a light exit side of the light emitting element 21.
In the present embodiment, the diffusion plate 51 is fixed on the substrate 11, and the diffusion plate 51 is used to diffuse the light emitted by the light emitting element 21 and uniformly diffuse the lamp light, so as to achieve a better illumination effect.
Further, as shown in fig. 1, the protruding portion 42 is provided with a connecting plate 45 facing away from the substrate 11, and extends toward the diffusion plate 51 to abut against the diffusion plate 51.
In this embodiment, since the distance between the light emitting elements is large, the diffusion plate 51 is disposed on the substrate 11, and the diffusion plate 51 is not affected by force in the middle, which easily causes damage to the diffusion plate 51; the coupling plate 45 is provided on the boss 42 for supporting the diffusion plate 51 at a middle position, ensuring a strong support of the diffusion plate 51 at the middle position, and preventing damage of the diffusion plate 51.
Further, as shown in fig. 1, the connection plate 45 is a transparent glass plate or a transparent plastic plate.
In the present embodiment, the connecting plate 45 protrudes from the light emitting device 21, the light emitted from the light emitting device 21 is easily irradiated on the connecting plate 45, and the connecting plate 45 is a transparent glass plate or a transparent plastic plate, so that the light can be conveniently transmitted, and a better irradiation effect can be achieved.
Further, as shown in fig. 1, the connecting plate 45 is provided with a second reflecting sheet 46 in a direction toward the light emitting element 21.
In this embodiment, the second reflective sheet 46 is used to reflect the light emitted from the light emitting elements 21, so that the light emitting elements 21 have better illumination brightness.
The utility model also provides a display device, which comprises a display panel and the backlight module; the specific structure of the backlight module refers to the above embodiments, and since the display device adopts all technical solutions of all the above embodiments, all beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated herein; the display panel is arranged on the backlight module.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A backlight module is characterized in that the backlight module comprises:
a substrate;
a plurality of rows of light emitting elements arranged on the substrate at intervals;
the first reflector plate is arranged on the substrate and provided with a protruding portion extending towards the light emitting direction of the light emitting elements, and the protruding portion is arranged between two adjacent rows of the light emitting elements.
2. The backlight module as claimed in claim 1, wherein the first reflective sheet comprises a first inclined plate and a second inclined plate, the first inclined plate has one end connected to the substrate and the other end extending away from the substrate and connected to the second inclined plate, and the second inclined plate has one end extending away from the first inclined plate and connected to the substrate to form the protrusion with an inverted "V" shape.
3. A backlight module according to claim 2, wherein the first inclined plate forms a first angle with the substrate towards the second inclined plate, the first angle being greater than or equal to 5 degrees and less than or equal to 45 degrees.
4. A backlight module according to claim 3, wherein the second inclined plate forms a second angle with the substrate towards the first inclined plate, the second angle being greater than or equal to 5 degrees and less than or equal to 45 degrees.
5. The backlight module according to claim 1, further comprising a support plate; the supporting plate is arranged on the surface of the first reflector plate facing to the substrate direction.
6. A backlight module according to claim 1, wherein each row of the light emitting elements is disposed in parallel, and the protrusion is disposed at a position 1/2 of a distance between the two rows of the light emitting elements.
7. A backlight module according to claim 1, further comprising:
a diffusion plate disposed on a light emitting side of the light emitting element; the bulge deviates from the substrate direction and is provided with a connecting plate, extends towards the diffusion plate and is abutted against the diffusion plate.
8. A backlight module according to claim 7, wherein the connecting plate is a transparent glass plate or a transparent plastic plate.
9. A backlight module according to claim 7, wherein the connecting plate is provided with a second reflective sheet facing the light emitting elements.
10. A display device, comprising a display panel and a backlight module as set forth in claims 1-9, wherein the display panel is disposed on the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021651048.6U CN212694720U (en) | 2020-08-10 | 2020-08-10 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021651048.6U CN212694720U (en) | 2020-08-10 | 2020-08-10 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212694720U true CN212694720U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021651048.6U Active CN212694720U (en) | 2020-08-10 | 2020-08-10 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212694720U (en) |
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2020
- 2020-08-10 CN CN202021651048.6U patent/CN212694720U/en active Active
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