CN217061318U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN217061318U CN217061318U CN202220235116.3U CN202220235116U CN217061318U CN 217061318 U CN217061318 U CN 217061318U CN 202220235116 U CN202220235116 U CN 202220235116U CN 217061318 U CN217061318 U CN 217061318U
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- backlight module
- reflector
- guide plate
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Abstract
The utility model discloses a backlight module and a display device, wherein the backlight module comprises a light source component, a reflector group and a light guide plate, and the reflector group comprises a first reflector; the light guide plate is provided with a plurality of side edges which are sequentially connected end to form an annular structure; the light source part is arranged corresponding to one side edge of the plurality of side edges, and the first reflector plate is arranged outside the other side edges in a surrounding manner; the first reflection sheet comprises a base layer, a reflection layer and a quantum dot layer which are sequentially stacked, wherein the quantum dot layer is connected with the side edge which is correspondingly arranged. The light source part emits blue light, the blue light is guided by the light guide plate and then irradiates the first reflector plate, the quantum dot layer of the first reflector plate excites the blue light into three primary colors, and the reflection layer stacked on the quantum dot layer reflects the three primary colors back to the light guide plate, so that the blue light emitted by the light source part is effectively prevented from being transmitted out from the side edge of the backlight module.
Description
Technical Field
The utility model relates to a backlight module technical field, in particular to backlight module and display device.
Background
With the development of display technology, the requirements of consumers on the color gamut of the display are increasing, and the color gamut and the color vividness of the display can be greatly improved by applying the quantum dot technology to the display device. The quantum dot display can realize that high color gamut mainly depends on a quantum dot film in the backlight module, and the quantum dots in the quantum dot film can excite blue light emitted by a light source into tricolor light with excellent monochromaticity so as to achieve high color gamut display of the display. However, due to the restriction of the narrow frame or even no frame design of the display, the blue light emitted by the light source is easily transmitted out from the side of the backlight module, which causes the color of the edge of the display area of the display to be blue, and affects the overall optical effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a backlight unit and display device aims at solving the problem that the blue light that the light source sent easily sees through from backlight unit's side.
In order to achieve the above object, the utility model provides a backlight module, backlight module includes:
a light source element;
the reflector group comprises a first reflector;
the light guide plate is provided with a plurality of side edges which are sequentially connected end to form an annular structure;
the light source part is arranged corresponding to one of the side edges, and the first reflector plate is arranged outside the other side edges in a surrounding manner; the first reflection sheet comprises a base layer, a reflection layer and a quantum dot layer which are sequentially stacked, and the quantum dot layer is connected with the side edge which is correspondingly arranged.
Optionally, the quantum dot layer comprises a matrix and a plurality of quantum dots; one side of the base body is connected with the reflecting layer, and the other side of the base body is connected with the side edge which is correspondingly arranged; a plurality of quantum dots are uniformly distributed in the matrix.
Optionally, the substrate is made of resin.
Optionally, the first reflective sheet further includes a first adhesive layer; one side of the first adhesive layer is adhered to one side of the base body, which is far away from the reflecting layer, and the other side of the first adhesive layer is adhered to the side edge which is arranged correspondingly to the first adhesive layer.
Optionally, the first reflective sheet further comprises a protective layer and a second adhesive layer; one side of the second bonding layer is bonded with one side of the base layer, which is far away from the reflecting layer, and the other side of the second bonding layer is bonded with the protective layer.
Optionally, the light guide plate has four sides, the four sides include two long sides disposed oppositely and two short sides disposed oppositely, the light source device is disposed corresponding to one of the long sides, and the first reflective sheet is disposed around the other long side and the two short sides.
Optionally, the reflection sheet group further includes a second reflection sheet, and the second reflection sheet is stacked on the back surface of the light guide plate.
Optionally, the backlight module further includes an optical film group, and the optical film group is stacked on the front surface of the light guide plate.
Optionally, the light source is a blue LED lamp.
The utility model discloses still provide a display device, display device includes like above-mentioned backlight unit.
In the backlight module of the utility model, one side of the light guide plate is correspondingly provided with the light source element, the periphery of the other sides of the light guide plate is provided with the first reflector plate, the light source element is used for emitting blue light, the light guide plate is used for guiding light to guide the scattering direction of light, the blue light emitted by the light source element is irradiated to the first reflector plate after being guided by the light guide plate, after the quantum dot layer of the first reflector plate excites the blue light into three primary colors, the reflector layer superposed on the quantum dot layer reflects the three primary colors back to the light guide plate, the blue light emitted by the light source element is effectively prevented from being transmitted out from the side of the backlight module, the backlight module of the utility model arranges the first reflector plate around the side of the light guide plate to play a role of adjusting the color of the side light, the color of the edge of the display area of the display device is prevented from being blue, the whole optical effect of the backlight module is improved, and the color gamut of the display device is increased, the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded schematic view of a backlight module according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating a light path propagation of a backlight module according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a first reflector in a backlight module according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating a light path propagation of a first reflector in a backlight module according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
2132 | |
| 10 | |
214 | First |
| 20 | |
215 | |
| 21 | |
216 | Second |
| 211 | |
22 | |
| 212 | |
30 | |
| 213 | |
31 | |
| 2131 | |
40 | Optical film group |
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope 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.
The present invention is described in the directions of "up", "down", "front", "back", "left", "right", etc. with reference to the directions shown in fig. 1 and 2, and is only used to explain the relative positional relationship between the respective components in the postures shown in fig. 1 and 2, and if the specific posture is changed, the directional indication is correspondingly changed accordingly.
The utility model provides a backlight module.
As shown in fig. 1 and 3, a backlight module 100 of the present embodiment includes a light source 10, a reflector set 20, and a light guide plate 30;
the reflection sheet group 20 includes a first reflection sheet 21;
the light guide plate 30 has a plurality of side edges 31, and the plurality of side edges 31 are sequentially connected end to form an annular structure;
the light source 10 is arranged corresponding to one side 31 of the plurality of sides 31, and the first reflector 21 is arranged around the other sides 31; the first reflection sheet 21 includes a base layer 211, a reflection layer 212, and a quantum dot layer 213 stacked in this order, and the quantum dot layer 213 is connected to the side edge 31 disposed correspondingly thereto.
It should be noted that quantum dots (quantum dots) are a kind of semiconductor nanostructure in the prior art that binds excitons in three spatial directions. This confinement can be due to an electrostatic potential, the interface of two different semiconductor materials, the surface of the semiconductor, or a combination of the three. Quantum dots are nano-scale semiconductors, and by applying a certain electric field or light pressure to the nano-semiconductor material, the quantum dots emit light of a specific frequency.
Specifically, as shown in fig. 2 and fig. 4, one side 31 of the light guide plate 30 is correspondingly provided with the light source 10, the periphery of the other sides 31 of the light guide plate 30 is provided with the first reflective sheet 21, the light source 10 is used for emitting blue light, the light guide plate 30 is used for guiding light to guide the scattering direction of the light, the blue light emitted by the light source 10 is guided by the light guide plate 30 and then irradiates to the first reflective sheet 21, after the quantum dot layer 213 of the first reflective sheet 21 excites the blue light into three primary colors, the reflective layer 212 stacked on the quantum dot layer 213 reflects the three primary colors back to the light guide plate 30, which effectively prevents the blue light emitted by the light source 10 from passing through the side 31 of the backlight module 100, the backlight module 100 of the present embodiment surrounds the first reflective sheet 21 on the side 31 of the light guide plate 30 to play a role of adjusting the color of the light of the side 31, so as to prevent the edge color of the display area of the display device from being blue, and improve the overall optical effect of the backlight module 100, the color gamut of the display device is increased, and the user experience is improved.
In this embodiment, the quantum dot layer 213 includes a base 2131 and a plurality of quantum dots 2132; one side of the base 2131 is connected with the reflecting layer 212, and the other side is connected with the side 31 correspondingly arranged with the reflecting layer; the plurality of quantum dots 2132 are uniformly distributed in the matrix 2131.
As shown in fig. 3 and fig. 4, the matrix 2131 is sandwiched between the reflective layer 212 and the side 31 of the light guide plate 30 as a carrier of the quantum dots 2132, and the quantum dots 2132 are uniformly dispersed in the matrix 2131 to excite the blue light emitted by the light source device 10 into three primary colors of red, green and blue, where the three primary colors of red, green and blue excited by the quantum dots 2132 have the advantage of high monochromaticity, thereby improving the color gamut of the backlight module 100, and the matrix 2131 plays a role in blocking and protecting the quantum dots 2132, thereby improving the stability of the structure. Further, the color reflected by the first reflective sheet 21 can be adjusted by adjusting the concentration of the quantum dots 2132 in the quantum dot layer 213.
In a preferred embodiment, the matrix 2131 is made of resin, that is, the matrix 2131 can be made of a bonding resin with barrier property in the prior art, and the quantum dots 2132 are uniformly dispersed in the matrix 2131 to protect the quantum dots 2132. In addition, the reflective layer 212 may be a silver-plated layer plated on the base layer 211, the base layer 211 is used for ensuring the flatness of the reflective layer 212 to improve the reflection effect of the reflective layer 212, and the silver-plated reflective layer 212 is used for reflecting the tricolor light excited by the quantum dot layer 213, thereby further increasing the brightness of the side 31 of the light guide plate 30.
In one embodiment, the first reflective sheet 21 further includes a first adhesive layer 214; one side of the first adhesive layer 214 is bonded to a side of the base 2131 facing away from the reflective layer 212, and the other side is bonded to the side 31 disposed corresponding thereto.
As shown in fig. 3 and 4, a first adhesive layer 214 is disposed on a side of the base 2131 facing away from the reflective layer 212, the base layer 211, the reflective layer 212, and the quantum dot layer 213 are adhered to the side 31 of the light guide plate 30 through the first adhesive layer 214, the first adhesive layer 214 may be made of an optical resin adhesive in the prior art, which not only increases the connection strength between the base 2131 and the light guide plate 30, but also allows light to pass through the first adhesive layer 214 with good light transmittance.
In one embodiment, the first reflective sheet 21 further includes a protective layer 215 and a second adhesive layer 216; the second adhesive layer 216 is adhered to the base layer 211 on the side thereof facing away from the reflective layer 212 and to the protective layer 215 on the other side thereof.
As shown in fig. 3 and 4, a second adhesive layer 216 is disposed on a side of the base layer 211 away from the reflective layer 212, the protective layer 215 is adhered to the base layer 211 through the second adhesive layer 216, and the second adhesive layer 216 may be made of acrylic adhesive in the prior art, so that the base layer 211 is firmly adhered to the protective layer 215 through the second adhesive layer 216, the structure is stable and reliable, and the reflective layer 212 is effectively prevented from falling off. Moreover, in a preferred embodiment, the protective layer 215 may be made of polyethylene terephthalate (PET) material in the prior art, which plays a role of protecting the reflective layer 212 and the quantum dot layer 213, and improves the rigidity and the structural strength of the first reflective sheet 21.
In one embodiment, the light guide plate 30 has four sides 31, the four sides 31 include two opposite long sides and two opposite short sides, the light source element 10 is disposed corresponding to one of the long sides, and the first reflective sheet 21 is disposed around the other long side and the two short sides.
As shown in fig. 1 and fig. 2, the light source 10 is disposed corresponding to the long side of the light guide plate 30, the first reflective sheet 21 is U-shaped and surrounds the long side and the short sides of the two sides, the blue light emitted from the light source 10 is irradiated to the first reflective sheet 21 through the light guide plate 30, and the quantum dot layer 213 and the reflective layer 212 cooperate to prevent the side 31 from transmitting the blue light. In addition, the first reflective sheet 21 may be an integrally formed part, or may be a split structure, and specifically, the first reflective sheet 21 includes three sub-reflective sheets, and the first reflective sheet 21 is surrounded by the three sub-reflective sheets to form a U-shaped structure and is surrounded by the three side edges 31 of the light guide plate 30.
In an embodiment, the reflective sheet group 20 further includes a second reflective sheet 22, and the second reflective sheet 22 is stacked on the back surface of the light guide plate 30.
The backlight module 100 further includes an optical film group 40, and the optical film group 40 is stacked on the front surface of the light guide plate 30.
The light source element 10 is a blue LED lamp. As shown in fig. 1 and fig. 2, the front surface of the light guide plate 30 is a light emitting surface, the long side of the light guide plate 30 located at the lower side is a light incident surface, the light source 10 is disposed corresponding to the light incident surface, the second reflective sheet 22 is stacked on the back surface of the light guide plate 30, the optical film group 40 is stacked on the front surface of the light guide plate 30, and the optical film group 40 includes a plurality of stacked optical films such as a brightness enhancement film, a diffusion film, and a quantum dot 2132 film, so as to improve the light emitting effect of the backlight module 100.
Specifically, the light source device 10 emits blue light, the light guide plate 30 guides the blue light to the second reflection sheet 22, the second reflection sheet 22 reflects the light to the front surface of the light guide plate 30, so that the light passes through the light guide plate 30 and is incident on the optical film set 40, the quantum dot 2132 film is used for exciting the incident blue light to emit tricolor light, and the tricolor light passes through the optical film set 40 to emit light with good optical performance. As shown in fig. 2, the light guide plate 30 guides the blue light to the first reflection sheet 21, the first reflection sheet 21 excites the blue light to generate three primary colors and reflects the three primary colors back to the light guide plate 30, the light guide plate 30 guides the three primary colors to the second reflection sheet 22, and the three primary colors are reflected by the second reflection sheet 22 to sequentially pass through the light guide plate 30 and the optical film set 40, so that the side 31 of the backlight module 100 is effectively prevented from emitting the blue light, and the light emitting effect of the backlight module 100 is improved.
The utility model discloses still provide a display device, display device include as above-mentioned backlight unit 100, this backlight unit 100's specific structure refers to above-mentioned embodiment, because display device has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary detail here.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the patent scope of the utility model, all be in the utility model discloses a under the design, utilize the equivalent structure transform of what the content of the description and the attached drawing was done, or direct/indirect application all includes in other relevant technical field the utility model discloses a patent protection is within range.
Claims (10)
1. A backlight module is characterized in that the backlight module comprises:
a light source element;
the reflector group comprises a first reflector;
the light guide plate is provided with a plurality of side edges, and the side edges are sequentially connected end to form an annular structure;
the light source part is arranged corresponding to one of the side edges, and the first reflector plate is arranged around the rest side edges; the first reflecting sheet comprises a base layer, a reflecting layer and a quantum dot layer which are sequentially stacked, and the quantum dot layer is connected with the side edge which is correspondingly arranged.
2. The backlight module of claim 1, wherein the quantum dot layer comprises a matrix and a plurality of quantum dots; one side of the base body is connected with the reflecting layer, and the other side of the base body is connected with the side edge which is correspondingly arranged; and a plurality of quantum dots are uniformly distributed in the matrix.
3. The backlight module as claimed in claim 2, wherein the substrate is made of resin.
4. The backlight module as claimed in claim 2, wherein the first reflective sheet further comprises a first adhesive layer; one side of the first bonding layer is bonded with one side of the base body, which is far away from the reflecting layer, and the other side of the first bonding layer is bonded with the side edge which is correspondingly arranged with the base body.
5. The backlight module according to any one of claims 1-4, wherein the first reflector sheet further comprises a protective layer and a second adhesive layer; one side of the second adhesive layer is adhered with one side of the base layer, which deviates from the reflecting layer, and the other side of the second adhesive layer is adhered with the protective layer.
6. The backlight module according to any one of claims 1-4, wherein the light guide plate has four sides, the four sides include two opposite long sides and two opposite short sides, the light source is disposed corresponding to one of the long sides, and the first reflective sheet is disposed around the other of the long sides and the two short sides.
7. The backlight module according to any one of claims 1-4, wherein the reflector set further comprises a second reflector, and the second reflector is stacked with the back surface of the light guide plate.
8. The backlight module according to any one of claims 1-4, further comprising an optical film set stacked on the front surface of the light guide plate.
9. The backlight module according to any one of claims 1-4, wherein the light source is a blue LED lamp.
10. A display device, characterized in that it comprises a backlight module according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220235116.3U CN217061318U (en) | 2022-01-27 | 2022-01-27 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220235116.3U CN217061318U (en) | 2022-01-27 | 2022-01-27 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217061318U true CN217061318U (en) | 2022-07-26 |
Family
ID=82485644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220235116.3U Active CN217061318U (en) | 2022-01-27 | 2022-01-27 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217061318U (en) |
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2022
- 2022-01-27 CN CN202220235116.3U patent/CN217061318U/en active Active
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