CN215986820U - Backlight module - Google Patents
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- CN215986820U CN215986820U CN202121397389.XU CN202121397389U CN215986820U CN 215986820 U CN215986820 U CN 215986820U CN 202121397389 U CN202121397389 U CN 202121397389U CN 215986820 U CN215986820 U CN 215986820U
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- backlight module
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Abstract
The embodiment of the application provides a backlight module, which comprises a driving substrate, a reflector plate, a plurality of reflecting layers and a plurality of MiniLED; the reflector plate is arranged on the driving substrate, and a plurality of through holes are formed in the reflector plate; the MiniLED arrays are arranged on the driving substrate, and one MiniLED is positioned in one through hole; the reflecting layer is arranged on the upper surface of the reflecting sheet, and one reflecting layer is annularly distributed along one through hole. This application embodiment is through setting up bellied reflection stratum around miniLED to the angle of the light that sends is carried out the high reflection and adjustment to the light that miniLED sent, is about to carry out the angle correction with the light of wide-angle, converts it to more from the light of positive direction outgoing, thereby can promote miniLED backlight unit's luminous efficacy.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module.
Background
With the development of LCD (Liquid Crystal Display) TV (television) technology, more and more products with high image quality Display requirements are produced, so that at present, each TV manufacturer mainly studies MiniLED backlight technology. In the traditional direct type backlight, an LCD light source is provided with a secondary lens so as to adjust the grade visual effect of a product and adjust the utilization of the light effect. Because the MiniLED has small size and limited luminous efficiency, the MiniLED used by a single machine has more quantity and the MiniLED is densely arranged, the secondary lens is basically not needed to be added to optimize the light source like the traditional LED, and the grade visual effect requirement of product display can be met.
However, in the same chip light emitting angle, for the MiniLED without the secondary lens, the light propagation is easier to disperse in multiple angles, which results in the non-concentrated light energy of the backlight module, and thus the light emitting efficiency is low.
Therefore, the prior art has defects and needs to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a backlight unit, through set up bellied reflection stratum around miniLED to carry out the angle of high reflection and the light of adjustment sending to the light that miniLED sent, can promote miniLED backlight unit's luminous efficacy.
The embodiment of the application provides a backlight module, which comprises a driving substrate, a reflector plate, a plurality of reflecting layers and a plurality of MiniLED;
the reflector plate is arranged on the driving substrate, and a plurality of through holes are formed in the reflector plate;
the MiniLED arrays are arranged on the driving substrate, and one MiniLED is positioned in one through hole of the reflector plate;
the reflecting layers are arranged on the upper surface of the reflecting sheet, and one reflecting layer is annularly distributed along one through hole.
In the backlight module according to the embodiment of the present application, the reflective layer is an annular reflective layer, and the center of the annular reflective layer coincides with the center of the through hole.
In the backlight module according to the embodiment of the present application, the reflective layer is made of ink.
In the backlight module according to the embodiment of the application, the ink comprises acrylic resin, an initiator and an ultraviolet-proof material.
In the backlight module of the embodiment of the application, the composition material of the ink further comprises fluorescent powder.
In the backlight module according to the embodiment of the application, the reflectivity of the ink is greater than 93%.
In the backlight module of the embodiment of the application, the height of the reflecting layer is matched with that of the MiniLED.
In the backlight module according to the embodiment of the application, the height of the reflective layer ranges from 50 μm to 150 μm.
In the backlight module according to the embodiment of the present application, in the plurality of reflective layers, cross-sectional shapes of the reflective layers are the same or different.
In the backlight module according to the embodiment of the present application, the cross-sectional shape of the reflective layer is an arc or a triangle.
The backlight module provided by the embodiment of the application comprises a driving substrate, a reflector plate, a plurality of reflecting layers and a plurality of MiniLED; the reflector plate is arranged on the driving substrate, and a plurality of through holes are formed in the reflector plate; the MiniLED arrays are arranged on the driving substrate, and one MiniLED is positioned in one through hole; the reflecting layer is arranged on the upper surface of the reflecting sheet, and one reflecting layer is annularly distributed along one through hole. This application embodiment sets up bellied reflection stratum through setting up bellied reflection stratum around miniLED, set up bellied reflection stratum at the edge of the through-hole that miniLED corresponds the reflector plate promptly to carry out the high reflection to the light that miniLED sent, adjust the angle of the light that miniLED sent simultaneously through this reflection stratum, the light that is about to large angle carries out the angle correction, converts it into more light of following the positive direction outgoing, thereby can promote miniLED backlight unit's luminous efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
Fig. 2 is another schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The present embodiment provides a backlight module 100, and referring to fig. 1 to 2, the backlight module 100 includes a driving substrate 10, a reflective sheet 20, a plurality of reflective layers 30, and a plurality of minileds 40.
The reflective sheet 20 is disposed on the driving substrate 10, and a plurality of through holes 50 are disposed on the reflective sheet 20.
The plurality of minileds 40 are arranged in an array on the driving substrate 10, and one MiniLED40 is located in one of the through holes 50 of the reflective sheet 20.
The minileds 40 are electrically connected to the driving substrate 10 through the through holes 50 penetrating the reflective sheet 20.
The driving substrate 10 is a Flexible Printed Circuit (FPC) substrate or a Printed Circuit Board (PCB) substrate.
The reflective layer 30 is disposed on the upper surface of the reflective sheet 20, and one reflective layer 30 is annularly disposed along one of the through holes 50. The convex reflecting layer 30 is arranged around the MiniLED40, namely, the convex reflecting layer 30 is arranged at the edge of the MiniLED40 corresponding to the through hole 50 of the reflector plate 20, so that the light emitted by the MiniLED40 is highly reflected, and meanwhile, the angle of the light emitted by the MiniLED40 is adjusted through the reflecting layer 30, namely, the light with a large angle is subjected to angle correction, and is converted into more light emitted from the positive direction, so that the light efficiency of the backlight module 100 can be improved.
In some embodiments, the reflective layer 30 is an annular reflective layer, and the center of the annular reflective layer coincides with the center of the through hole 50.
The center of the annular reflective layer coincides with the center of the through hole 50, that is, the MiniLED40 is located at the center of the annular reflective layer, so that the angle of light emitted by the MiniLED40 can be better adjusted by the annular reflective layer, the angle of the light with large angle is corrected, the light is converted into more light emitted from the positive direction, and the light emitting efficiency of the backlight module 100 is improved.
In some embodiments, the material of the reflective layer 30 is ink.
When light passes through the reflective layer 30, the light is reflected by the reflective layer 30 in different directions, and particularly in the backlight module 100, when the MiniLED40 emits light to the reflective layer 30, the light is reflected by the reflective layer 30 in different directions and converted into more light emitted from the positive direction, so as to improve the light extraction efficiency of the backlight module 100.
In some embodiments, the ink comprises a composition material including an acrylic resin, an initiator, and an ultraviolet screening material.
It should be noted that the ink includes not only the acrylic resin, the initiator, and the ultraviolet shielding material, but also highly reflective particles for enhancing the reflection intensity of the reflective layer 30. In addition, the ink is designed to be in a solid form like a paste, rather than a liquid form in which the conventional ink has strong fluidity.
In some embodiments, the ink further comprises a phosphor.
The fluorescent powder is used for solving the problem that the edge of a light source MiniLED40 is blue. The material is not limited to phosphor, and any material may be used as long as it can solve the problem of bluing of the edge of the light source MiniLED 40.
In some embodiments, the ink has a reflectance of greater than 93%.
The reason why the reflectivity of the ink is limited to be greater than 93% is to improve the reflection intensity of the reflection layer 30, so that when the MiniLED40 emits light to the reflection layer 30, the reflection layer 30 can better reflect the light to different directions and convert the light into more light emitted from the positive direction, thereby improving the light extraction efficiency of the backlight module 100.
In some embodiments, the height of the reflective layer 30 matches the height of the MiniLED 40.
The reason why the height of the reflective layer 30 is required to be matched with the height of the MiniLED40 is that if the height of the reflective layer 30 is too low compared with the height of the MiniLED40, when the MiniLED40 emits light to the reflective layer 30, some light with large angles will not pass through the reflective layer 30, and the reflective layer 30 will not reflect the light with large angles, that is, the light with large angles cannot be angle-corrected and converted into more light emitted from the positive direction, so that the light emitting efficiency of the backlight module 100 is affected. Furthermore, if the height of the reflective layer 30 is too high compared to the height of the MiniLED40, when the MiniLED40 emits light, some small angles of light will be blocked and reflected by the reflective layer 30, resulting in some areas of the display area of the terminal screen being unlit, and these areas will be unlit.
In some embodiments, the height of the reflective layer 30 ranges from 50 μm to 150 μm.
The height range of the reflective layer 30 is set to be 50 μm to 150 μm, because the reflective layer 30 has a better effect in the height range, when the MiniLED40 emits light to the reflective layer 30, the reflective layer 30 can better reflect the light to different directions, and convert the light into more light emitted from the positive direction, so as to improve the light extraction efficiency of the backlight module 100.
In some embodiments, the cross-sectional shape of each of the plurality of reflective layers 30 is the same or not the same.
However, when designing the shape of the reflective layer 30, since the reflective sheet 20 has a plurality of reflective layers 30, a person skilled in the art can design the shapes of the plurality of reflective layers 30 according to actual needs, and the cross-sectional shapes of the plurality of reflective layers 30 may be designed to be the same, may be designed to be different from each other, or may be designed to be partially the same, or may be partially different, that is, the reflective layer 30 may be a combination of a plurality of reflective layers 30 having a single shape, or may be a combination of a plurality of reflective layers 30 having a plurality of shapes.
In some embodiments, the reflective layer 30 has an arcuate or triangular cross-sectional shape (as shown in fig. 1 and 2).
It should be noted that the cross-sectional shape of the reflective layer 30 is not limited to an arc or a triangle, and those skilled in the art can specifically set the cross-sectional shape according to actual situations, and is not limited specifically herein.
In summary, in the backlight module 100 provided in the embodiment of the present application, the backlight module 100 includes a driving substrate 10, a reflective sheet 20, a plurality of reflective layers 30, and a plurality of minileds 40; the reflective sheet 20 is disposed on the driving substrate 10, and a plurality of through holes 50 are disposed on the reflective sheet 20; the plurality of minileds 40 are arranged in an array on the driving substrate 10, and one MiniLED40 is located in one through hole 50; the reflective layer 30 is disposed on the upper surface of the reflective sheet 20, and one reflective layer 30 is annularly disposed along one of the through holes 50. This application embodiment is through setting up bellied reflection stratum 30 around miniLED40, set up bellied reflection stratum 30 at the edge that miniLED40 corresponds through-hole 50 of reflector plate 20 promptly, carry out the high reflection to the light that miniLED40 sent, the angle of the light that simultaneously adjusts miniLED40 and send through this reflection stratum 30, the light that is about to the wide-angle carries out the angle correction, convert it to more light of following the positive direction outgoing, thereby can promote the luminous efficiency of the backlight unit 100 of miniLED 40.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The backlight module provided by the embodiment of the present application is described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A backlight module is characterized by comprising a driving substrate, a reflector plate, a plurality of reflecting layers and a plurality of MiniLED;
the reflector plate is arranged on the driving substrate, and a plurality of through holes are formed in the reflector plate;
the MiniLED arrays are arranged on the driving substrate, and one MiniLED is positioned in one through hole of the reflector plate;
the reflecting layers are arranged on the upper surface of the reflecting sheet, and one reflecting layer is annularly distributed along one through hole.
2. The backlight module according to claim 1, wherein the reflective layer is an annular reflective layer, and a center of the annular reflective layer coincides with a center of the through hole.
3. The backlight module as claimed in claim 1, wherein the material of the reflective layer is ink.
4. The backlight module of claim 3, wherein the ink has a reflectivity of greater than 93%.
5. The backlight module of claim 1, wherein the height of the reflective layer matches the height of the MiniLED.
6. The backlight module of claim 1, wherein the height of the reflective layer is in the range of 50 μm to 150 μm.
7. The backlight module according to claim 1, wherein the plurality of reflective layers each have the same or different cross-sectional shape.
8. The backlight module as claimed in claim 7, wherein the cross-sectional shape of the reflective layer is arc-shaped or triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121397389.XU CN215986820U (en) | 2021-06-22 | 2021-06-22 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121397389.XU CN215986820U (en) | 2021-06-22 | 2021-06-22 | Backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN215986820U true CN215986820U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121397389.XU Active CN215986820U (en) | 2021-06-22 | 2021-06-22 | Backlight module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201826A1 (en) * | 2022-04-22 | 2023-10-26 | 惠州华星光电显示有限公司 | Light-emitting plate, preparation method for light-emitting plate, and display terminal |
| WO2023230830A1 (en) * | 2022-05-31 | 2023-12-07 | 京东方科技集团股份有限公司 | Light-emitting substrate and manufacturing method therefor, backlight module and display device |
-
2021
- 2021-06-22 CN CN202121397389.XU patent/CN215986820U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201826A1 (en) * | 2022-04-22 | 2023-10-26 | 惠州华星光电显示有限公司 | Light-emitting plate, preparation method for light-emitting plate, and display terminal |
| WO2023230830A1 (en) * | 2022-05-31 | 2023-12-07 | 京东方科技集团股份有限公司 | Light-emitting substrate and manufacturing method therefor, backlight module and display device |
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