CN111552115B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN111552115B CN111552115B CN202010395224.2A CN202010395224A CN111552115B CN 111552115 B CN111552115 B CN 111552115B CN 202010395224 A CN202010395224 A CN 202010395224A CN 111552115 B CN111552115 B CN 111552115B
- Authority
- CN
- China
- Prior art keywords
- mounting seat
- diffusion plate
- light
- backlight module
- refraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
Abstract
The invention discloses a backlight module and a display device. The backlight module comprises a diffusion plate, a back plate, a support piece and a light source assembly; the backboard comprises a backboard body and a mounting seat, wherein the backboard body and the diffusion plate are oppositely arranged, and the mounting seat is positioned on one side of the backboard body, which faces the diffusion plate; a plurality of refraction parts are arranged in the mounting seat, and the refraction index of each refraction part is different from that of the mounting seat; the supporting piece is arranged on the mounting seat and extends towards the diffusion plate; the light source component is arranged on the backboard body; light emitted by the light source assembly irradiates the mounting seat, and after being reflected and refracted by the mounting seat and the refraction part, the light irradiates the diffusion plate. The technical scheme of the invention avoids the phenomenon that light rays injected into the mounting seat are absorbed, improves the light energy utilization rate, eliminates the problem of shadow on the diffusion plate, achieves the effect of uniform brightness of the backlight module and improves the display image quality.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a display device.
Background
In the current electronic display device, a backlight module is generally used to provide a surface light source required by a display panel. Backlight modules are one of the most important components in electronic display devices.
In the related art, the light source of the direct type backlight module is fixed at the bottom of the back plate, and the diffusion plate is disposed at the top of the back plate and supported by the supporting structure, however, in the existing direct type backlight module, when looking down from the diffusion plate at the top, a shadow phenomenon is formed at the position corresponding to the supporting structure, which results in uneven brightness and seriously affects the image quality.
The foregoing is merely provided to facilitate an understanding of the principles of the present application and is not admitted to be prior art.
Disclosure of Invention
The invention provides a backlight module, which aims to solve the problem of shadow of the backlight module so as to achieve the effects of uniform brightness and improved image quality.
In order to achieve the above objective, the backlight module provided by the present invention includes a diffusion plate, a back plate, a support member, and a light source assembly; the back plate comprises a back plate body and a mounting seat, the back plate body and the diffusion plate are oppositely arranged, and the mounting seat is positioned on one side of the back plate body facing the diffusion plate; a plurality of refraction parts are arranged in the mounting seat, and the refraction index of each refraction part is different from that of the mounting seat; the supporting piece is arranged on the mounting seat and extends towards the diffusion plate; the light source component is arranged on the backboard body; the light emitted by the light source assembly irradiates the mounting seat, and after being reflected and refracted by the mounting seat and the refraction part, the light irradiates the diffusion plate.
In an embodiment of the invention, the refraction portion is a bubble, and a plurality of bubbles are disposed in the mounting seat at intervals.
In an embodiment of the invention, the light source assembly includes a light bar and a reflective lens disposed on the back plate body, and the reflective lens is covered on the light bar; the reflective lens is provided with an emergent surface adjacent to the backboard body and used for emitting light rays emitted by the lamp strip towards the direction of the backboard body so that at least part of the light rays are emitted into the mounting seat.
In an embodiment of the invention, the reflective lens further has an incident surface and a reflective surface, wherein the incident surface is a convex curved surface facing the light bar, and the reflective surface is a concave curved surface facing the diffusion plate; one side of the emergent surface far away from the backboard body is connected with the reflecting surface.
In an embodiment of the invention, the mounting seat has a plate-shaped structure; in the thickness direction of the back plate body, the thickness dimension of the mounting seat is smaller than the thickness dimension of the reflective lens.
In an embodiment of the present invention, a plurality of bubbles are distributed in the mounting seat in a manner of dense two sides and sparse middle.
In an embodiment of the invention, the air bubbles are formed in the mounting seat by foaming.
In an embodiment of the invention, a mesh point structure is disposed on a surface of the mounting base facing the diffusion plate.
In an embodiment of the invention, the supporting member is integrally formed with the mounting base.
In an embodiment of the invention, the backlight module further includes a reflective sheet, and the reflective sheet is disposed on the back plate body.
In order to achieve the above object, the present invention further provides a display device, including the above backlight module; the backlight module comprises a diffusion plate, a back plate, a support piece and a light source component; the back plate comprises a back plate body and a mounting seat, the back plate body and the diffusion plate are oppositely arranged, and the mounting seat is positioned on one side of the back plate body facing the diffusion plate; a plurality of refraction parts are arranged in the mounting seat, and the refraction index of each refraction part is different from that of the mounting seat; the supporting piece is arranged on the mounting seat and extends towards the diffusion plate; the light source component is arranged on the backboard body; the light emitted by the light source assembly irradiates the mounting seat, and after being reflected and refracted by the mounting seat and the refraction part, the light irradiates the diffusion plate.
According to the technical scheme, the back plate body is provided with the mounting seat, and the supporting piece is arranged on the mounting seat and extends towards the diffusion plate so as to play a role in supporting the diffusion plate; the light source component is arranged on the backboard body, the plurality of refraction portions are arranged in the mounting seat, the refraction index of the refraction portions is different from that of the mounting seat, so that when light emitted by the light source component irradiates the mounting seat, the light irradiated onto the mounting seat can be nearly 100% irradiated to the diffusion plate through the reflection and refraction effects of the refraction portions in the mounting seat and the mounting seat, the phenomenon that the light irradiated into the mounting seat is absorbed is avoided, the light energy utilization rate is improved, the problem of shadow appearing on the diffusion plate is solved, the uniform brightness of the backlight module is achieved, and the effect of displaying image quality 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a backlight module according to an embodiment of the invention;
FIG. 2 is a schematic view of a support and a mounting base according to an embodiment of the present invention;
FIG. 3 is a schematic view of the light path of light passing through a bubble according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light source assembly according to an embodiment of the invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 100 | |
200 | |
| 300 | |
310 | |
| 320 | |
400 | |
| 500 | |
510 | |
| 520 | |
521 | |
| 522 | |
523 | |
| 600 | Reflection sheet |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a backlight module.
In the embodiment of the invention, as shown in fig. 1, 2 and 3, the backlight module includes a diffusion plate 100, a back plate, a support 400 and a light source assembly 500; the back plate comprises a back plate body 200 and a mounting seat 300, wherein the back plate body 200 is arranged opposite to the diffusion plate 100, and the mounting seat 300 is positioned on one side of the back plate body 200 facing the diffusion plate 100; a plurality of refraction portions are arranged in the mounting seat 300, and the refraction indexes of the refraction portions are different from those of the mounting seat 300; the support 400 is disposed on the mounting base 300 and extends toward the diffusion plate 100; the light source component 500 is arranged on the backboard body 200; the light emitted from the light source assembly 500 irradiates the mount 300, is reflected and refracted by the mount 300 and the refraction portion, and then is irradiated to the diffusion plate 100.
The light source assembly 500 is disposed on the backplate body 200 to function as a light source. The mounting base 300 is disposed on the back plate body 200, and the supporting member 400 is disposed on the mounting base 300 and extends toward the diffusion plate 100 to support the diffusion plate 100 and the back plate body 200, so as to prevent the diffusion plate 100 from being deformed when receiving external pressure. The light emitted from the light source assembly 500 is at least partially irradiated onto the mount 300 and the support 400, and then is emitted onto the diffusion plate 100 by reflection or refraction of the mount 300 and the support 400 to display light.
The light source assembly 500 irradiates the light of mount pad 300, a portion can reflect to diffuser plate 100 through mount pad 300 and external critical face, remaining light can enter into mount pad 300 through this critical face, and be equipped with a plurality of refracting parts in the mount pad 300, the refracting index of this refracting part is different with the refracting index of mount pad 300, so that light takes place reflection and refraction effect in the critical face department of refracting part and mount pad 300, the partial light that takes place the reflection can emit to diffuser plate 100, the partial light that takes place the refraction can reflect and refract again through the critical face of next refracting part and mount pad 300, so repeatedly, when the quantity of refracting part is enough, the light that enters into in the mount pad 300 can almost all be all from the mount pad 300 to the diffuser plate 100 department, thereby prevent that light from taking place total reflection and not coming out in the mount pad 300, the shadow of 100 corresponding mount pad 300 positions has been eliminated, the light energy utilization ratio has been improved.
In the practical application process, the specific shape material of the refraction portion may be determined according to the practical situation, so long as the refraction portion is ensured to reflect and refract at the critical surface of the refraction portion and the mounting seat 300, for example, the refraction portion may be configured as bubbles, or may be configured as glass particles or plastic particles with different refractive indexes from the mounting seat 300, and the like.
According to the technical scheme, the back plate body 200 is provided with the mounting seat 300, and the supporting piece 400 is arranged on the mounting seat 300 and extends towards the diffusion plate 100 so as to support the diffusion plate 100; the light source assembly 500 is arranged on the backboard body 200, and the refractive index of the plurality of refractive parts is different from the refractive index of the mounting seat 300 in the mounting seat 300, so that when the light emitted by the light source assembly 500 irradiates the mounting seat 300, the light irradiated on the mounting seat 300 can be nearly 100% irradiated to the diffusion plate 100 through the reflection and refraction actions of the mounting seat 300 and the refractive parts in the mounting seat 300, the phenomenon that the light irradiated on the mounting seat 300 is absorbed is avoided, the light energy utilization rate is improved, the problem of shadow appearing on the diffusion plate 100 is solved, the uniform brightness of the backlight module is achieved, and the effect of displaying image quality is improved.
In one embodiment of the invention, theThe refraction portion is a bubble 310, and a plurality of bubbles 310 are disposed in the mounting seat 300 at intervals. N layers of bubbles 310 are set, the refractive index of the mounting base 300 is N1, and the refractive index of air is N2, N1>n2, the light ray will be reflected and refracted at the critical surface of the mounting seat 300 and the bubble 310, and the reflectivity at the critical surface is: r= (n 1-n 2) 2 /(n1+n2) 2 The refracted light rays are incident on the critical surface of the next bubble 310 and the mounting seat 300, and the reflection and refraction effects are again generated, and the reflectivity of the light rays is r=1- (1-r) 2 . After repeating the above steps through the plurality of bubbles 310, the total reflectance of light is r=1- (1-R) N From the above formula, when the number of N is sufficiently large, R approaches 100%, i.e., the greater the number of bubbles 310 through which light passes, the closer to 100% the total reflectance. The original light path is changed after the light is reflected and refracted for many times, so that the light irradiated onto the diffusion plate 100 is more uniform.
In the practical application process, the number and arrangement mode of the air bubbles 310 can be determined according to the practical situation, in order to make the light utilization rate higher, the number of the air bubbles 310 is more and better, the arrangement mode of the air bubbles 310 in the practical application process does not have specific requirements, the air bubbles can be irregularly arranged or regularly arranged, alternatively, the air bubbles 310 can be arranged in a layer-by-layer manner, and on this basis, the air bubbles 310 of two adjacent layers can be oppositely arranged or can be arranged in an empty staggered manner.
In an embodiment of the present invention, referring to fig. 1 and 4, a light source assembly 500 includes a light bar 510 and a reflective lens 520 disposed on a back plate body 200, wherein the reflective lens 520 is covered on the light bar 510; the reflective lens 520 has an exit surface 521 disposed adjacent to the back plate body 200 for emitting the light emitted by the light bar 510 toward the back plate body 200, so that at least a portion of the light is incident into the mount 300.
The light source assembly 500 includes a light bar 510 and a reflective lens 520, the light bar 510 is disposed on the back plate body 200 to emit light to the surrounding, the reflective lens 520 is covered on the light bar 510, so that the light emitted by the light bar 510 completely enters the reflective lens 520, the reflective lens 520 has an emitting surface 521, the emitting surface 521 is adjacent to the back plate body 200, and the emitting surface 521 is opposite to the mounting base 300, so that the light emitted by the light bar 510 can be emitted from the emitting surface 521 to the back plate body 200 and the mounting base 300 after entering the reflective lens 520, and the light emitted to the mounting base 300 is almost completely emitted to the diffusion plate 100 under the action of a plurality of bubbles 310, so as to increase the light energy utilization rate.
It can be understood that, in this embodiment, the light emitted by the light bar 510 is not directly emitted toward the diffusion plate 100, but is emitted toward the back plate body 200 through the light guiding effect of the reflective lens 520, the back plate body 200 is provided with the reflective sheet 600, and the reflective sheet 600 can perform diffuse reflection on the light to reflect the light toward the surrounding, so that the light reflected to the diffusion plate 100 through the reflective sheet 600 is more uniform, and the brightness of the backlight module is more uniform.
Alternatively, the method can be applied to a reflective direct type backlight module, where light is emitted toward the back plate body 200, so that the light directly irradiated onto the back plate body 200 can be reflected to the diffusion plate 100 through the reflection sheet 600, and the light irradiated onto the mounting seat 300 can be almost totally reflected to the diffusion plate 100 under the action of the air bubbles 310, thereby eliminating shadows at the corresponding position of the mounting seat 300, and improving the light energy utilization rate and the uniform brightness.
In a real-time example of the present invention, referring to fig. 1 and 4, the reflective lens 520 further has an incident surface 522 and a reflective surface 523, wherein the incident surface 522 is a convex curved surface facing the light bar 510, and the reflective surface 523 is a concave curved surface facing the diffusion plate 100; the emitting surface 521 is connected to the reflecting surface 523 at a side far from the back plate body 200.
The light emitted by the light bar 510 enters the reflective lens 520 from the incident surface 522, is reflected by the reflective surface 523 to the exit surface 521, and finally exits from the exit surface 521 toward the back plate body 200. Optionally, the incident surface 522 is a convex curved surface facing the light bar 510, the reflecting surface 523 is a concave curved surface facing the diffusion plate 100, and the curvature of the incident surface 522 is greater than that of the reflecting surface 523, so that most of the light can be reflected by the reflecting surface 523, and a small portion of the light is emitted from the reflecting surface 523.
Alternatively, the shape of the exit surface 521 may be a plane, or a curved surface, depending on the actual situation. In this embodiment, in order to make the outgoing light beam be emitted toward the back plate body 200 more, the outgoing surface 521 may be configured as a concave curved surface.
In an embodiment of the present invention, referring to fig. 1 and 2, the mounting base 300 has a plate-like structure; in the thickness direction of the backplate body 200, the thickness dimension of the mount 300 is smaller than the thickness dimension of the reflective lens 520. The mounting base 300 has a plate-shaped structure, so that the mounting structure of the support 400 is more stable and reliable. The direction of the light emitted from the reflective lens 520 is the direction towards the back plate body 200, and the thickness dimension of the mounting base 300 is smaller than the thickness dimension of the reflective lens 520, so that the mounting base 300 can be irradiated by more light, and thus, under the action of the plurality of bubbles 310, the area of the diffusion plate 100 corresponding to the mounting base 300 can not generate a shadow, so that the light emitted onto the diffusion plate 100 is more uniform.
It can be appreciated that, in the practical application process, the light may not only be irradiated onto the mounting base 300, but also some light may be irradiated onto the supporting member 400, and on this basis, a plurality of air bubbles 310 may be formed in the supporting member 400 at intervals, so as to further improve the light energy utilization rate.
In an embodiment of the present invention, considering that the supporting member 400 is disposed at the middle position of the mounting base 300, the light irradiated to the mounting base 300 is substantially injected from the positions near two sides of the mounting base 300, and optionally, the plurality of air bubbles 310 are distributed in a manner of being dense at two sides and sparse at the middle in the mounting base 300, so as to improve the light energy utilization rate.
In an embodiment of the present invention, referring to fig. 1 and 2, the air bubbles 310 are formed in the mounting base 300 by foaming. Optionally, the mounting base 300 may be made of an optical grade material such as PMMA (Polymethyl methacrylate, organic glass), PS (Polystyrene), and the like, and the support 400 may be made of an optical grade material such as PMMA (Polymethyl methacrylate, organic glass), PS (Polystyrene), and the like, and the support 400 and the mounting base 300 are integrally formed through an injection molding process, so that the mounting process is reduced, and the stability of the structures of the support 400 and the mounting base 300 is improved. On this basis, the mounting base 300 can be directly adhered to the backplate body 200 through double-sided tape, so as to realize the mounting function of the support 400 and the backplate body 200. Alternatively, in order to make the supporting effect better, an end of the supporting member 400 away from the mounting base 300 abuts against the diffusion plate 100.
Optionally, the specific shape and structure of the support 400 may be set to be triangular, cylindrical or conical, etc., and in this embodiment, in order to make the light utilization efficiency higher, the support 400 is in a triangular shape, and the top tip of the support 400 abuts against the diffusion plate 100, so as to avoid the occurrence of shadows.
In an embodiment of the invention, referring to fig. 2, a mesh point structure 320 is disposed on a surface of the mounting base 300 facing the diffusion plate 100, so as to sufficiently scatter the light emitted from the mounting base 300 to form a uniform surface light source, and further make the light irradiated onto the diffusion plate 100 more uniform. Alternatively, the dot structure 320 may be spherical, cylindrical, triangular or other irregular shape, and in this embodiment, the dot structure 320 preferably adopts a hemispherical convex dot array to make the emitted light more uniform.
The invention also provides a display device, which comprises a backlight module, and the specific structure of the backlight module refers to the embodiment, and because the display device adopts all the technical schemes of all the embodiments, the display device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. A backlight module, comprising:
a diffusion plate;
the backboard comprises a backboard body and a mounting seat, wherein the backboard body and the diffusion plate are oppositely arranged, and the mounting seat is positioned on one side of the backboard body facing the diffusion plate; a plurality of refraction parts are arranged in the mounting seat, and the refraction index of each refraction part is different from that of the mounting seat;
the supporting piece is arranged on the mounting seat and extends towards the diffusion plate; and
the light source assembly is arranged on the backboard body; the light emitted by the light source assembly irradiates the mounting seat, is reflected and refracted by the mounting seat and the refraction part, and then irradiates the diffusion plate;
the light source assembly comprises a lamp strip and a reflective lens which are arranged on the backboard body, and the reflective lens is covered on the lamp strip; the reflective lens is provided with an emergent surface adjacent to the backboard body and is used for transmitting light rays emitted by the lamp strip towards the direction of the backboard body so that at least part of the light rays are emitted into the mounting seat; the emergent surface is a concave curved surface facing the mounting seat, so that emergent light rays can be emitted towards the direction of the backboard body more;
the reflective lens is also provided with an incident surface and a reflecting surface, the incident surface is a convex curved surface facing the lamp strip, the reflecting surface is a concave curved surface facing the diffusion plate, and one side of the emergent surface far away from the back plate body is connected with the reflecting surface; and the curvature of the incident surface is greater than the curvature of the reflecting surface.
2. The backlight module according to claim 1, wherein the refraction portion is a bubble, and a plurality of bubbles are disposed in the mounting base at intervals.
3. The backlight module according to claim 1 or 2, wherein the mounting base has a plate-like structure; in the thickness direction of the back plate body, the thickness dimension of the mounting seat is smaller than the thickness dimension of the reflective lens.
4. The backlight module according to claim 2, wherein the air bubbles are formed in the mounting base by foaming;
and/or a plurality of bubbles are distributed in the mounting seat in a mode of dense two sides and sparse middle.
5. The backlight module according to claim 1 or 2, wherein a mesh point structure is provided on a surface of the mounting base facing the diffusion plate.
6. A backlight module according to claim 1 or 2, wherein the support member is integrally formed with the mounting base.
7. The backlight module according to claim 1 or 2, further comprising a reflective sheet disposed on the back plate body.
8. A display device comprising a backlight module according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010395224.2A CN111552115B (en) | 2020-05-11 | 2020-05-11 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010395224.2A CN111552115B (en) | 2020-05-11 | 2020-05-11 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111552115A CN111552115A (en) | 2020-08-18 |
| CN111552115B true CN111552115B (en) | 2023-06-20 |
Family
ID=71999668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010395224.2A Active CN111552115B (en) | 2020-05-11 | 2020-05-11 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111552115B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917733A (en) * | 2021-04-19 | 2022-01-11 | 北京显芯科技有限公司 | Mini-LED backlight display screen |
| CN114911098B (en) * | 2022-06-08 | 2023-10-10 | 深圳创维－Rgb电子有限公司 | Reflecting plate structure and display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070013469A (en) * | 2005-07-26 | 2007-01-31 | 삼성전자주식회사 | Optical lens and optical package, and backlight assembly and display device having the same |
| WO2012132043A1 (en) * | 2011-03-25 | 2012-10-04 | ナルックス株式会社 | Illumination device |
| US20150338057A1 (en) * | 2013-01-04 | 2015-11-26 | Anycasting Co., Ltd. | Side-emitting led lens, and backlight unit and display device comprising same |
| RU2566529C2 (en) * | 2013-01-21 | 2015-10-27 | Шэнчжэнь Кука Нетворк Текнолоджи Ко., Лтд | Lens, led backlight module and display device |
| CN103471009A (en) * | 2013-09-13 | 2013-12-25 | 东莞市欧科光电科技有限公司 | Novel LED lens and liquid crystal display backlight screen |
| CN103994396B (en) * | 2014-05-14 | 2017-07-11 | 郑睿韬 | A kind of bis- refraction-reflection lens of LED for downward back radiant |
| CN204513110U (en) * | 2015-02-28 | 2015-07-29 | 青岛海信电器股份有限公司 | Backlight module and display unit |
| CN210005830U (en) * | 2019-07-15 | 2020-01-31 | 惠州视维新技术有限公司 | Diffusion plate support frame, backlight module and display device |
| CN110376791B (en) * | 2019-07-17 | 2021-12-21 | 深圳创维－Rgb电子有限公司 | Direct type backlight module and display device |
-
2020
- 2020-05-11 CN CN202010395224.2A patent/CN111552115B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111552115A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7114838B2 (en) | Dish lens for backlight module and light emitting diode | |
| CN111552115B (en) | Backlight module and display device | |
| JPH10260315A (en) | Lens light guide plate and surface light source unit using the same | |
| CN107561630B (en) | Backlight module and display device | |
| JP2013214378A (en) | Light guide plate, surface light source device, and display device | |
| CN212624628U (en) | Backlight module | |
| JP2006114239A (en) | Planar light source, light guide body for planar light source and manufacturing method therefor, lighting device, signboard and liquid crystal display | |
| CN110376791B (en) | Direct type backlight module and display device | |
| CN100389347C (en) | Plate for guiding light and backlight module | |
| US5940571A (en) | Nondiffusive light guide plate, lens film and surface light source assembly | |
| CN216561322U (en) | Backlight module and display device | |
| WO2023151599A1 (en) | Optical assembly, backlight module and display device | |
| KR20120122642A (en) | Reflective light source type light guide system of sidelight type backlight unit | |
| US8469579B2 (en) | Optical plate with micro-structures and backlight module using same | |
| JP3688036B2 (en) | Surface light source device using non-light diffusing light guide plate and lens film | |
| JP3549919B2 (en) | Planar light emitting device | |
| CN114911098B (en) | Reflecting plate structure and display device | |
| CN217157024U (en) | Backlight module and electronic equipment | |
| CN111399097A (en) | Glass diffusion plate and backlight module with same | |
| US20230013111A1 (en) | Side-edge type surface light emitting apparatus having light guide plate sandwiched by upper and lower prism sheets | |
| CN217544055U (en) | Backlight module and display device | |
| CN213240751U (en) | Backlight module and display device thereof | |
| CN113934058B (en) | Optical assembly, backlight module and display device | |
| CN217820948U (en) | Light guide assembly, backlight module and display device | |
| CN219641958U (en) | Diffusion plate assembly, backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |