CN208270893U - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
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- CN208270893U CN208270893U CN201821018527.7U CN201821018527U CN208270893U CN 208270893 U CN208270893 U CN 208270893U CN 201821018527 U CN201821018527 U CN 201821018527U CN 208270893 U CN208270893 U CN 208270893U
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- trapezoidal
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- light guide
- backlight module
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Abstract
The utility model discloses a kind of backlight module and display devices, wherein the backlight module include upper surface be provided with light source mounting slot and four sides be trapezoidal trapezoidal light guide, the light source being mounted in light source mounting slot, the lower surface for being plated in trapezoidal light guide and four sides reflectance coating.Above-mentioned technical proposal disclosed in the present application, setting four sides for the light guide plate in backlight module is trapezoidal trapezoidal light guide, and reflectance coating is coated on the lower surface and four sides of trapezoidal light guide, when the light that light source issues exposes to four sides of trapezoidal light guide, it can be then reflected back due to four sides plate and are formed with reflectance coating, light is projected from front, and since reflectance coating is directly coated on trapezoidal light guide, the loss that light is occurred in transmittance process can then be reduced, so as to improve the utilization rate of light, to improve the luminous efficiency of backlight module, and reduce the power consumption of display device.
Description
Technical field
The utility model relates to technical field of liquid crystal display, more specifically to a kind of backlight module and display device.
Background technique
Backlight is a kind of form of illumination, and it is aobvious to be usually used in LCD (Liquid Crystal Display, liquid crystal display) etc.
On showing device, for providing illumination for the display device, luminous efficiency is most important to the power consumption of display device.Backlight i.e. from
Side is irradiated behind, and to increase illuminance and brightness in low lighting environment, illumination effect will directly influence aobvious
The visual effect of showing device.
Existing backlight module may include leaded light as shown in Figure 1, it illustrates the structural schematic diagram of existing backlight module
Plate, the light source positioned at light guide plate side, the optical film positioned at the reflectance coating of light guide plate lower surface and above light guide plate.
But since light guide plate is rectangular parallelepiped structure, four sides are rectangle structure, then when light exposes to four sides
The transmission namely light that light can occur can be leaked out from four sides, so that the utilization rate of light is relatively low.In addition,
Since there are air layers between light guide plate and reflectance coating, then light can be overflow during being transmitted to reflectance coating from light guide plate
Reflection etc. and be reflected to light can not on light guide plate, that is to say, that the presence of air layer can make light in transmittance process
It is lost, so that some light can not be utilized because that can not be transferred to reflectance coating.In summary, existing backlight mould
Group is relatively low to the utilization rate of light, and this can then reduce the luminous efficiency of backlight module, and increase the power consumption of display device.
In conclusion how to improve backlight module to the utilization rate of light, to improve the luminous efficiency of backlight module, thus
The power consumption for reducing display device, is current those skilled in the art technical problem urgently to be resolved.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of backlight module and display device, to improve to light
Utilization rate to improve the luminous efficiency of backlight module, and reduces the power consumption of display device.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of backlight module, is provided with light source mounting slot including upper surface and four sides are trapezoidal trapezoidal leaded light
The reflection of body, the light source being mounted in the light source mounting slot, the lower surface and four sides that are plated in the trapezoidal light guide
Film.
Preferably, the area of the trapezoidal light guide upper surface is greater than the area of lower surface.
Preferably, the area of the trapezoidal light guide upper surface is less than the area of lower surface.
Preferably, the trapezoidal light guide is glass.
Preferably, the light source is LED light.
Preferably, the upper surface of the trapezoidal light guide is provided with the first diffusion barrier.
Preferably, the upper surface of first diffusion barrier is provided with brightness enhancement film.
Preferably, the upper surface of the brightness enhancement film is provided with the second diffusion barrier.
A kind of display device, including backlight module described in any of the above embodiments.
The utility model provides a kind of backlight module and display device, and wherein the backlight module includes that upper surface is provided with
Light source mounting slot and four sides are trapezoidal trapezoidal light guide, the light source being mounted in light source mounting slot, are plated in trapezoidal lead
The reflectance coating of the lower surface of body of light and four sides.
Above-mentioned technical proposal disclosed in the present application, it is trapezoidal for setting four sides for the light guide plate in backlight module
Trapezoidal light guide, and it is to work as light source on trapezoidal side that reflectance coating, which is coated on the lower surface of trapezoidal light guide and four,
When the light of sending is exposed on four sides of trapezoidal light guide, then it can be reflected due to four sides plate and are formed with reflectance coating
Back, project light from the front of trapezoidal light guide, and since reflectance coating is directly to be coated on trapezoidal light guide
On, then the loss that light is occurred in transmittance process can be reduced, so as to improve the utilization rate of light, to improve back
The luminous efficiency of optical mode group, and reduce the power consumption of display device.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of existing backlight module provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram of first specific embodiment of backlight module provided by the embodiment of the utility model；
Fig. 3 is the lower view of trapezoidal the first specific embodiment of light guide provided by the embodiment of the utility model；
Fig. 4 is index path when light provided by the embodiment of the utility model exposes to trapezoidal guide-lighting body side surface；
Fig. 5 is the top view of trapezoidal the second specific embodiment of light guide provided by the embodiment of the utility model；
Fig. 6 is a kind of structural schematic diagram of the third specific embodiment of backlight module provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 2 is referred to, it illustrates a kind of first specific embodiments of backlight module provided by the embodiment of the utility model
Structural schematic diagram, may include upper surface be provided with light source mounting slot 11 and four sides be trapezoidal trapezoidal light guide 1,
The light source 2 that is mounted in light source mounting slot 11 is plated in the lower surface of trapezoidal light guide 1 and the reflectance coating 3 of four sides.
Backlight module includes that four sides are trapezoidal trapezoidal light guide 1, and the side of trapezoidal 1 upper surface of light guide is set
It is equipped with light source mounting slot 11, the light source 2 for being illuminated is installed in the light source mounting slot 11, wherein the issued light of light source 2
The color of line can according to the demand of user or the demand of display device is set, the light issued at this to light source 2
Color do not do any restriction.The lower surface of trapezoidal light guide 1 and four be directly be coated on trapezoidal side it is upper anti-
It penetrates between film 3 namely reflectance coating 3 and trapezoidal light guide 1 and is directly in contact, therebetween and air layer is not present, then light
Line during transmitting from trapezoidal light guide 1 to reflectance coating 3 can't because air layer there are due to be lost, therefore, can
To reduce the loss that light is occurred in transmittance process, to improve the utilization rate of light.
After light source 2 emits beam, by the effect of trapezoidal light guide 1, side light source is converted to area source, is made
Most light refraction can make light uniform as best one can to the front of trapezoidal light guide 1.When light is irradiated to trapezoidal leaded light
When on four sides of body 1, because trapezoidal light guide 1 is a prismatoid, then four sides are with certain tilt angle
There is certain angle value in trapezoidal namely four sides and perpendicular, and because plating is formed with reflectance coating 3 on four sides,
The light then exposed on side can because side with perpendicular there are certain angle value due to be reflected back, and also can be because anti-
Penetrate the presence of film 3 and be reflected back, and the light of vertical side incidence then can directly because reflectance coating 3 there are due to be reflected back toward
Come.The light being reflected back then may directly be projected from the upper surface of trapezoidal light guide 1, or be reflected onto trapezoidal leaded light
The lower surface of body 1 and be located at the reflectance coating 3 of lower surface to secondary reflection again so that it is projected from the upper surface of trapezoidal light guide 1,
To reduce the case where light is directly projected from side.It, then can be direct when light is irradiated to the lower surface of trapezoidal light guide 1
The reflectance coating 3 for being located at lower surface is reflected and is used again.Therefore, trapezoidal 1 lower surface of light guide and and four are plated in
Reflectance coating 3 on a side can be such that more light project from the front of trapezoidal light guide 1, so as to improve backlight module
To the utilization rate of light.
Above-mentioned technical proposal disclosed in the present application, it is trapezoidal for setting four sides for the light guide plate in backlight module
Trapezoidal light guide, and it is to work as light source on trapezoidal side that reflectance coating, which is coated on the lower surface of trapezoidal light guide and four,
When the light of sending is exposed on four sides of trapezoidal light guide, then it can be reflected due to four sides plate and are formed with reflectance coating
Back, project light from the front of trapezoidal light guide, and since reflectance coating is directly to be coated on trapezoidal light guide
On, then the loss that light is occurred in transmittance process can be reduced, so as to improve the utilization rate of light, to improve back
The luminous efficiency of optical mode group, and reduce the power consumption of display device.
The area of a kind of backlight module provided by the embodiment of the utility model, trapezoidal 1 upper surface of light guide is greater than lower surface
Area.
Trapezoidal light guide 1 in backlight module can be greater than the prismatoid of the area of lower surface, tool for the area of upper surface
Body structure may refer to Fig. 2 to Fig. 4, wherein it is specific that Fig. 3 shows trapezoidal light guide first provided by the embodiment of the utility model
The lower view of embodiment, what dotted line represented in figure is light source mounting slot 11, and Fig. 4 shows light provided by the embodiment of the utility model
Line exposes to index path when trapezoidal guide-lighting body side surface.
The area of a kind of backlight module provided by the embodiment of the utility model, trapezoidal 1 upper surface of light guide is less than lower surface
Area.
Trapezoidal light guide 1 in backlight module can also be less than the prismatoid of the area of lower surface for the area of upper surface,
Specifically it may refer to Fig. 5, it illustrates the vertical views of trapezoidal the second specific embodiment of light guide provided by the embodiment of the utility model
Figure.
A kind of backlight module provided by the embodiment of the utility model, trapezoidal light guide 1 can be glass.
It is by glass that trapezoidal light guide 1 used in backlight module, which is specifically as follows glass namely the trapezoidal light guide 1,
Made of substrate, light penetration is relatively high, has better derivative ac-tion to light, so that the light that light source 2 is issued
It can be fully utilized.
A kind of backlight module provided by the embodiment of the utility model, light source 2 can be LED light.
The light source 2 being mounted in backlight module is specifically as follows LED (Light Emitting Diode, light emitting diode)
Lamp has the characteristics that energy-saving and environmental protection, safety, low-power consumption, high brightness, light beam are concentrated, so as to improve the property of backlight module
Can, the luminous efficiency of backlight module is improved, the power consumption of display device is reduced.
Fig. 6 shows a kind of structural representation of the third specific embodiment of backlight module provided by the embodiment of the utility model
Figure.A kind of backlight module provided by the embodiment of the utility model, the upper surface of trapezoidal light guide 1 are provided with the first diffusion barrier 4.
The upper surface of trapezoidal light guide 1 is provided with the first diffusion barrier 4, and structure is over the transparent substrate such as PET
(polyethylene terephthalate, polyethylene terephthalate) two sides applies astigmatic optics particle.First diffusion
Film 4 primarily serves the effect of amendment diffusion, and light radiation area can be made to become larger, and the uniformity is preferable, and has the function of diffusing light,
I.e. light scatters on its surface, equably disseminates out by light is soft.
The upper surface of a kind of backlight module provided by the embodiment of the utility model, the first diffusion barrier 4 is provided with brightness enhancement film 5.
It, then can be in the upper table of the first diffusion barrier 4 to improve the luminous efficiency of backlight module in order to reduce the loss of light
Brightness enhancement film 5 is arranged in face.
It should be noted that do not do any restriction to the concrete type of brightness enhancement film 5 here, can for general prismatic lens,
Multi-functional prismatic lens, Micro-Lens Film, any one in reflective polaroid.
A kind of backlight module provided by the embodiment of the utility model, the upper surface of brightness enhancement film 5 are provided with the second diffusion barrier 6.
In order to make light that the second diffusion barrier 6 more uniformly can then be arranged in brightness enhancement film 5.The work of second diffusion barrier 6
With and structure it is similar with the first diffusion barrier 4, details are not described herein.
The utility model embodiment additionally provides a kind of display device, including any of the above-described kind of backlight module.
Because any backlight module mentioned by above-mentioned all has good light utilization, and luminous effect with higher
Rate.Therefore, if applying any of the above-described kind of backlight module after the display devices such as LCD, the power consumption of display device can be reduced,
To improve the performance of display device, the cost of display device is reduced.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the element that the process, method, article or equipment including a series of elements is intrinsic.?
Do not have in the case where more limiting, the element limited by sentence "including a ...", it is not excluded that including the element
There is also other identical elements in process, method, article or equipment.In addition, provided by the embodiment of the utility model above-mentioned
In technical solution with correspond to the consistent part of technical solution realization principle and unspecified in the prior art, in order to avoid excessive superfluous
It states.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (9)
1. a kind of backlight module, which is characterized in that it is trapezoidal that upper surface, which is provided with light source mounting slot and four sides,
Trapezoidal light guide, the light source being mounted in the light source mounting slot, the lower surface for being plated in the trapezoidal light guide and four sides
The reflectance coating in face.
2. backlight module according to claim 1, which is characterized in that under the area of the trapezoidal light guide upper surface is greater than
The area on surface.
3. backlight module according to claim 1, which is characterized in that under the area of the trapezoidal light guide upper surface is less than
The area on surface.
4. backlight module according to claim 1, which is characterized in that the trapezoidal light guide is glass.
5. backlight module according to claim 1, which is characterized in that the light source is LED light.
6. backlight module according to any one of claims 1 to 5, which is characterized in that the upper surface of the trapezoidal light guide
It is provided with the first diffusion barrier.
7. backlight module according to claim 6, which is characterized in that the upper surface of first diffusion barrier is provided with blast
Film.
8. backlight module according to claim 7, which is characterized in that the upper surface of the brightness enhancement film is provided with the second diffusion
Film.
9. a kind of display device, which is characterized in that including backlight module as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821018527.7U CN208270893U (en) | 2018-06-28 | 2018-06-28 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821018527.7U CN208270893U (en) | 2018-06-28 | 2018-06-28 | A kind of backlight module and display device |
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| Publication Number | Publication Date |
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| CN208270893U true CN208270893U (en) | 2018-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112193176A (en) * | 2020-09-14 | 2021-01-08 | 东风延锋汽车饰件系统有限公司 | Light-transmitting decorating part without diffusion film or reflection film and automobile |
-
2018
- 2018-06-28 CN CN201821018527.7U patent/CN208270893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112193176A (en) * | 2020-09-14 | 2021-01-08 | 东风延锋汽车饰件系统有限公司 | Light-transmitting decorating part without diffusion film or reflection film and automobile |
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