CN109782490A - Direct-light-type backlight, mould group and laser television - Google Patents
Direct-light-type backlight, mould group and laser television Download PDFInfo
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- CN109782490A CN109782490A CN201910247584.5A CN201910247584A CN109782490A CN 109782490 A CN109782490 A CN 109782490A CN 201910247584 A CN201910247584 A CN 201910247584A CN 109782490 A CN109782490 A CN 109782490A
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Abstract
The invention discloses a kind of direct-light-type backlight, mould group and laser televisions, wherein the direct-light-type backlight includes shell, RGB laser emitter and reflection subassembly；The shell includes the first panel for being equipped with the RGB laser emitter and the second panel being connected in the first panel, is provided with light hole in the second panel；The RGB laser emitter can emit the first collimated light beam to the reflection subassembly；The reflection subassembly includes diffuse reflector, and first collimated light beam can be reflected at diffusing reflection light beam to the light hole of the second panel by the diffuse reflector；Alternatively, the reflection subassembly includes plane mirror and concavees lens, first collimated light beam can be reflected into the second collimated light beam to the concavees lens by the plane mirror, and the concavees lens can reflect second collimated light beam at diffusion light beam to the light hole.Present invention seek to address that the brightness of existing TV liquid crystal module, colour gamut and contrast deficiency technical problem.
Description
Technical field
The present invention relates to backlight module field more particularly to a kind of direct-light-type backlights, mould group and laser television.
Background technique
As the market demand upgrades, while appearance and modeling upgrades, content is also constantly upgrading television set.In order to will be rich
Rich content resource shows more life-like complete, needs to carry out television set the promotion of inherent display image quality.And for display image quality
For, the indexs such as brightness, colour gamut and contrast of liquid crystal module are the parts for needing to be promoted and broken through.For high brightness and
High contrast part, be currently by increasing LED number and LOCAL DIMMING (local dimming) Lai Shixian, it is ultra-thin on the market
Moulding is side-light type product, and LED number directly conflicts between heat dissipation, and the trend of LOCAL DIMMING is also not very high,
Therefore brightness is not very high.
The wide colour gamut of traditional product, which is achieved in that, carries out excitation quanta point material by using blue-ray LED to generate half
The relatively narrow frequency spectrum of the relatively narrow red green half-wave width of wave width, to promote its corresponding colour gamut.Major applications scheme makes at present
It is realized with quantum film.And the launching efficiency of quantum film is very low, basic light loss is between 30-50%, the amount containing heavy metal Cd
The efficiency of sub- film is higher, in 30%-40% or so, but because containing heavy metal Cd, it is toxic not environmentally.The quantum film of no Cd excites
Efficiency is lower, 50% or so, and colour gamut only NTSC1931 90%, full gamut is not achieved at all.Therefore, tradition is on the market
Laser television is the projector of laser light source in fact, and light is thrown and enters human eye after being reflected on the display panel, therefore brightness
It is general lower, and resolution ratio is very low.
In consideration of it, it is necessary to propose a kind of new direct-light-type backlight, mould group and laser television, it is above-mentioned to alleviate or overcome
Defect.
Summary of the invention
The main purpose of the present invention is to provide a kind of direct-light-type backlight, which aims to solve the problem that existing
Brightness, colour gamut and the contrast deficiency technical problem of TV liquid crystal module.
To achieve the goals above, a kind of direct-light-type backlight provided by the invention, including shell, RGB laser emitter
And it is set to the intracorporal reflection subassembly of the shell；
The shell includes being equipped with the first panel of the RGB laser emitter and being connected in the first panel
Second panel is provided with light hole in the second panel；
The RGB laser emitter can emit the first collimated light beam to the reflection subassembly；
The reflection subassembly includes diffuse reflector, and first collimated light beam can be reflected into unrestrained anti-by the diffuse reflector
Go out light at irradiating light beam to the light hole of the second panel；
Alternatively, the reflection subassembly includes plane mirror and concavees lens,
First collimated light beam can be reflected into the second collimated light beam to the concavees lens by the plane mirror,
Second collimated light beam can be reflected the light hole at diffusion light beam to the second panel by the concavees lens
Locate light out.
Preferably, the reflection subassembly includes convex lens, plane mirror and concavees lens, and the convex lens can be by described first
The first amendment light beam can be reflected by collimated light beam refraction at the first amendment light beam to the plane mirror, the plane mirror
Second amendment light beam to the concavees lens, the concavees lens can will the second amendment light beam refraction at spreading light beam to described
Go out light at the light hole of second panel.
Preferably, the RGB laser emitter includes red laser transmitter, blue laser transmitter and green laser hair
Emitter.
Preferably, the diffusion angle of the diffusion light beam is 150 degree to 170 degree.
Preferably, at the first angle, the diffuse reflector and described between the diffuse reflector and the first panel
At the second angle between two panels；
Alternatively, at third angle, the plane mirror and the second panel between the plane mirror and the first panel
Between at the 4th angle.
Preferably, the shell includes the third panel being connected in the first panel, the third panel parallel in
Heat release hole is provided on the second panel and the third panel.
In addition, the down straight aphototropism mode set includes according to the above institute the present invention also provides a kind of down straight aphototropism mode set
The direct-light-type backlight stated.
Preferably, the backlight module further includes backboard, the support frame being set on the backboard and is set to described
Optical sheet on support frame, the backboard are connected with multiple direct-light-type backlights.
Preferably, cross-ventilation hole is provided on the backboard.
In addition, the laser television includes according to above-described downward back the present invention also provides a kind of laser television
Optical mode group
In the scheme of the application, due to direct-light-type backlight, including shell, RGB laser emitter and it is set to shell
Interior reflection subassembly；Wherein, using the small-sized exciter of the RGB monochrome of RGB as backlight, excellent high-energy and
Extremely narrow half-wave width can satisfy the performance of product high brightness and full gamut, to be easy collocation higher resolution panel, such as 8K
It is shown etc. super clear image quality is carried out.And reflection subassembly is then for realizing the energy of backlight being uniformly distributed and weaken laser beam
Amount prevents laser directly be emitted to apply collocation and damage, and reflection subassembly can be diffuse reflector, and diffuse reflector can be by the
One collimated light beam, which is reflected at the diffusing reflection light beam to the light hole of second panel of multi-angle, goes out light, and diffusing reflection effect is according to reality
Diffuse reflector placement location and structural confirmation.Reflection subassembly can be including plane mirror and concavees lens, by putting putting down to inclined-plane
Face reflecting mirror carries out the reflective of collimated light beam, obtains the second collimated light beam of approximate collimation, carries out light expansion by concavees lens later
It dissipates, the second collimated light beam of sending break up refraction into diffusion light beam, then through the light-emitting window in second panel by light
Line issues, and according to its peculiar application (light mixing distance, quantity of light source, the angle of the light of the requirements such as spacing), is adjusted
The parameters such as the distance of internal optical path, focus and lens radius, further, it is also possible to determine whether to take according to practical application effect
With periphery secondary optics mirror lens carry out using.Therefore, the direct-light-type backlight of the application is a kind of high excitation energy, half
The relatively narrow light source of wave width, the LOCAL DIMMING that can arrange in pairs or groups while guaranteeing that high colour gamut meets high brightness realize high contrast,
And it is applied in television set.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The mechanism shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the schematic diagram of the direct-light-type backlight of the embodiment of the present invention；
Fig. 2 is the light path schematic diagram of the first scheme of the direct-light-type backlight of the embodiment of the present invention；
Fig. 3 is the light path schematic diagram of the alternative plan of the direct-light-type backlight of the embodiment of the present invention；
Fig. 4 is the light path schematic diagram of the third program of the direct-light-type backlight of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the backlight module of the embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Direct-light-type backlight | 101 | Shell |
| 110 | First panel | 120 | Second panel |
| 121 | Light hole | 111 | First collimated light beam |
| 130 | Third panel | 200 | Diffuse reflector |
| 210 | Diffusing reflection light beam | 300 | Plane mirror |
| 310 | Second collimated light beam | 400 | Concavees lens |
| 410 | Spread light beam | 500 | Convex lens |
| 510 | First amendment light beam | 520 | Second amendment light beam |
| 600 | Backboard | 700 | Support frame |
| 800 | Optical sheet |
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
It is sharp to attached drawing 3, a kind of direct-light-type backlight 100 provided by the invention, including shell 101, RGB to refer to attached drawing 1
Reflection subassembly optical transmitting set (not shown) and be set in shell 101；Shell 101 includes being equipped with RGB laser emitter
First panel 110 and the second panel 120 that is connected in first panel 110, be provided with light hole 121 in second panel 120；
RGB laser emitter can emit the first collimated light beam 111 to reflection subassembly；Reflection subassembly includes diffuse reflector 200, diffusing reflection
First collimated light beam 111 can be reflected at diffusing reflection light beam 210 to the light hole 121 of second panel 120 by body 200 goes out light；
Alternatively, reflection subassembly includes plane mirror 300 and concavees lens 400, the first collimated light beam 111 can be reflected by plane mirror 300
To concavees lens 400, concavees lens 400 can reflect the second collimated light beam 310 into diffusion light beam 410 to the two collimated light beams 310
Go out light at the light hole 121 of two panels 120.
In the scheme of the application, due to direct-light-type backlight 100, including shell 101, RGB laser emitter and setting
Reflection subassembly in shell 101；Wherein, excellent using the small-sized exciter of the RGB monochrome of RGB as backlight
High-energy and extremely narrow half-wave width can satisfy the performance of product high brightness and full gamut, to be easy collocation higher resolution face
Plate, such as 8K carry out super clear image quality and show.And reflection subassembly is then uniformly distributed and weakens laser light for realizing backlight
The energy of line prevents laser to be directly emitted and damages to collocation application, and reflection subassembly can be diffuse reflector 200, diffusing reflection
First collimated light beam 111 can be reflected into the diffusing reflection light beam 210 of multi-angle to the light hole 121 of second panel 120 by body 200
Locate light out, diffusing reflection effect is according to practical 200 placement location of diffuse reflector and structural confirmation.Reflection subassembly can be including plane
Mirror 300 and concavees lens 400 carry out the reflective of collimated light beam by the plane mirror put to inclined-plane, obtain the of approximate collimation
Two collimated light beams 310 carry out light diffusion by concavees lens 400 later, carry out the second collimated light beam 310 of sending to break up refraction
At diffusion light beam 410, then light is issued through the light-emitting window in second panel 120, according to its peculiar application (light mixing
Distance, quantity of light source, the angle of the light of the requirements such as spacing), it is adjusted the distance of internal optical path, focus and lens radius
Etc. parameters, further, it is also possible to be made according to practical application effect determine whether need to the to arrange in pairs or groups secondary optics mirror lens of periphery
With.Therefore, the direct-light-type backlight 100 of the application is the relatively narrow light source of a kind of high excitation energy, half-wave width, is guaranteeing high colour gamut
The LOCAL DIMMING that can arrange in pairs or groups while meeting high brightness realizes high contrast, and is applied in television set.
It should be noted that because laser beam is assembled very much, essentially collimation property, energy is too if being directly emitted
By force, certain harm is had to collocation application, therefore there is the characteristic for needing the design of certain optical path to change its collimation, that is, there is setting
Necessity of one reflection subassembly.In addition, power, wave can be combined with demand depending on the application using the single laser of RGB
It is long, the collocation such as quantity.The collocation mode of RGB laser is not particularly restricted in the present invention, and the collocation of multiple RGB lasers can
It to be that traditional thread binding arrangement mode is presented, can also be arranged in trigonometric expression, also or three lateral row RGB are staggered, certainly
White light can also be combined according to RGB as even back area source.
Wherein, in terms of the selection of laser, the laser generator of low power RGB monochrome can be used, laser
Light emitting angle, which essentially collimates, to be shown, and the angle of horizontal direction within 10 degree, spend at 10 degree -20 by vertical direction angle.Work
Temperature is at -30 to 85 degrees Celsius, and output power is between 50-200mw.Preferably, RGB laser emitter includes red laser hair
Emitter, blue laser transmitter and green laser transmitter.Wherein, blue laser transmitter inspires blue wavelength range 430-
Between 460nm, between 505-540nm, red laser transmitter inspires the green wavelength that green laser transmitter inspires
Red light wavelength 620-640nm between, the monochromatic light that every kind of monochromatic source issues, the wide suggestion of frequency spectrum half-wave of monochromatic light
Preferably in 15-25nm or so, thin portion selection collocation is carried out according to different application and the coloration demand of product.Laser is single
φ 5mm is preferably dimensioned to be hereinafter, single power is preferably 200MW or less.In addition, using the metal material packet of very good heat transfer characteristics
The laser emitter on side is to guarantee high-power lower heat dissipation and stability.
Attached drawing 4 is referred to, as a kind of possible embodiment of the invention, reflection subassembly includes convex lens 500, plane mirror
300 and concavees lens 400, convex lens 500 can reflect the first collimated light beam 111 into the first amendment light beam 510 to plane mirror
300, the first amendment light beam 510 can be reflected into the second amendment light beam 520 to concavees lens 400, concavees lens 400 by plane mirror 300
Second amendment light beam 520 can be reflected and go out light at diffusion light beam 410 to the light hole 121 of second panel 120.
Enter the first collimated light beam 111 that RGB laser transmitter projects go out in the scheme of the present embodiment, inside shell 101,
By inside put to the first collimated light beam 111 that issues laser of convex lens 500 become entirely collimated light or have convergence
Then first amendment light beam 510 of effect is reflected into the first amendment light beam by what the plane mirror 300 on inclined-plane carried out corresponding light beam
510, light diffusion refraction is carried out into diffusion light beam 410 by concavees lens 400 later.
It should be noted that application is had according to its laser backlight on the basis of the application above scheme,
For the distance to the optical path inside backlight, the parameters such as focus and lens radius are adjusted, and those skilled in the art are also
Can arrange in pairs or groups other peripheries secondary optics mirror lens carry out using, for example add plane mirror, convex lens or concavees lens,
As long as should all be included in the application's for the flexible configuration for reduce laser emitting intensity or being distributed even back and carry out
In protection scope.
Further, the diffusion angle for spreading light beam 410 is 150 degree to 170 degree.Light diffusion is carried out by concavees lens 400
Light beam afterwards is in 150 degree to 170 degree, changes the collimation special efficacy of laser beam, reduces outstanding energy, while also increasing out
Penetrate area.
As a kind of specific embodiment of the invention, at the first angle between diffuse reflector 200 and first panel 110,
At the second angle between diffuse reflector 200 and second panel 120.Specifically, diffuse reflector 200 can be with one end and first panel
110 connections, the other end connect with second panel 120, the reflecting surface of diffuse reflector 200 and the first collimated light beam 111 at angle with
First collimated light beam 111 can be reflected at diffusing reflection light beam 210 to the light hole 121 of second panel 120 and go out light.
As another specific embodiment of the invention, pressed from both sides between plane mirror 300 and first panel 110 at third
Angle, at the 4th angle between plane mirror 300 and second panel 120.Similarly, plane mirror 300 can be with one end and first panel 110
Connection, the other end are connect with second panel 120.Preferably, third angle is equal to the 4th angle, the i.e. reflecting surface of plane mirror 300
With the first collimated light beam 111 just at 45 degree of angles.First collimated light beam 111 can be reflected into and the first collimation by plane mirror 300
The second vertical collimated light beam 310 of light beam 111 to concavees lens 400, concavees lens 400 again reflect the second collimated light beam 310 at expansion
Go out light at spreading beam 410 to the light hole 121 of second panel 120.
Preferably, shell 101 includes the third panel 130 being connected in first panel 110, and third panel 130 is parallel to
Heat release hole is provided on second panel 120 and third panel 130.Laser backlight is as directly-down light source, load module device
Aluminium can be directly used, the metals such as iron material or alloy carry out the design of 101 module-external of single housing, in shell 101
Bottom can increase heat release hole and radiate.
In addition, referring to attached drawing 5, the present invention also provides a kind of down straight aphototropism mode set, down straight aphototropism mode set includes upper
The direct-light-type backlight 100 stated.Backlight module further includes backboard 600, the support frame being set on backboard 600 700 and setting
In the optical sheet 800 on support frame 700, backboard 600 is connected with multiple above-mentioned direct-light-type backlights 100.
Down straight aphototropism mode set of the invention due to having used energy stronger, is made by the narrower RGB one-wavelength laser of half band-width
For light source, the LOCAL DIMMING that can arrange in pairs or groups while guaranteeing that high colour gamut meets high brightness realizes high contrast, and is applied to
In television set.
Specifically, direct-light-type backlight 100 can be fixed on backboard 600 by forms such as screw or viscose glues,
Load module device directly uses aluminium, and the metals such as iron material or alloy carry out the design of module-external.It is arranged on backboard 600
There is the support frame 700 for connecting diffuser plate, optical sheet 800 includes reflector plate, diffuser plate and diaphragm etc., according to actual functional capability
Demand carries out collocation configuration.For example diffusion plate bracing frame 700 is pasted on backboard 600, reflector plate is attached above, then will be expanded
It falls apart and is respectively supported at 600 flanging position of backboard with diaphragm, center is fixed on 600 corresponding position of backboard later, by liquid crystal
Panel paste or is fixed or is fastened in corresponding 600 structure of backboard by increasing surface frame form.Wherein, backboard
Cross-ventilation hole can be increased open on 600, the position in cross-ventilation hole and the position of heat release hole of shell 101 of backlight are opposite
It answers, fan or water cooling plant can also be increased outside backboard 600 to enhance the effect of heat dissipation.
In addition, laser television includes above-mentioned down straight aphototropism mode set the present invention also provides a kind of laser television.The present invention
Laser television, require wide colour gamut and high brightness feature to start with from market end HDR image quality, stronger using energy, half-wave is wide
Narrower RGB one-wavelength laser is spent as light source, for the existing laser emitter feature in market, the arrangement side of RGB mono-colour laser
Case on the export plan of straight-down negative laser beam, carries out entirely novel invention in heat sink conception and mould group form, combines laser and sends out
Collimation laser is diffused opening and reflects out, solves the problems, such as that laser alignment is difficult to apply by force, prevents energy too
The problem of stabbing human eye by force, appears on the market as real laser television, can realize colour gamut under the premise of equivalent brightness index
Best effect, and can easily realize that 4K/8K shows solve current laser television according to the liquid crystal display panel of selection collocation
(projector form) brightness is low, and colour gamut is low, the low problem of resolution ratio.Swashed relative to traditional product by using blue-ray LED
Quanta point material is sent out, no matter can significantly be promoted in the brightness of TV liquid crystal module, colour gamut and contrast.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent mechanism made by bright specification and accompanying drawing content or equivalent process transformation are applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of direct-light-type backlight, which is characterized in that the direct-light-type backlight include shell, RGB laser emitter and
It is set to the intracorporal reflection subassembly of the shell；
The shell includes second for being equipped with the first panel of the RGB laser emitter and being connected in the first panel
Panel is provided with light hole in the second panel；
The RGB laser emitter can emit the first collimated light beam to the reflection subassembly；
The reflection subassembly includes diffuse reflector, and first collimated light beam can be reflected into and diffuse by the diffuse reflector
Go out light at beam to the light hole of the second panel；
Alternatively, the reflection subassembly includes plane mirror and concavees lens,
First collimated light beam can be reflected into the second collimated light beam to the concavees lens by the plane mirror,
The concavees lens can reflect second collimated light beam to go out at diffusion light beam to the light hole of the second panel
Light.
2. direct-light-type backlight according to claim 1, which is characterized in that the reflection subassembly includes convex lens, plane
Mirror and concavees lens, the convex lens can reflect first collimated light beam into the first amendment light beam to the plane mirror, institute
The first amendment light beam can be reflected into the second amendment light beam to the concavees lens by stating plane mirror, and the concavees lens can incite somebody to action
The second amendment light beam, which is reflected, goes out light at diffusion light beam to the light hole of the second panel.
3. direct-light-type backlight according to claim 1, which is characterized in that the RGB laser emitter includes that feux rouges swashs
Optical transmitting set, blue laser transmitter and green laser transmitter.
4. according to claim 1 to direct-light-type backlight described in 3 any one, which is characterized in that the expansion of the diffusion light beam
Scattered angle is 150 degree to 170 degree.
5. according to claim 1 to direct-light-type backlight described in 3 any one, which is characterized in that the diffuse reflector and institute
It states at the first angle between first panel, at the second angle between the diffuse reflector and the second panel；
Alternatively, at third angle between the plane mirror and the first panel, between the plane mirror and the second panel
At the 4th angle.
6. according to claim 1 to direct-light-type backlight described in 3 any one, which is characterized in that the shell includes connection
In the third panel in the first panel, the third panel parallel is arranged in the second panel and the third panel
There is heat release hole.
7. a kind of down straight aphototropism mode set, which is characterized in that the down straight aphototropism mode set includes according to claim 1 to 6
Direct-light-type backlight described in meaning one.
8. down straight aphototropism mode set according to claim 7, which is characterized in that the backlight module further includes backboard, sets
The support frame being placed on the backboard and the optical sheet being set on support frame as described above, the backboard are connected with multiple described straight
Backlight.
9. down straight aphototropism mode set according to claim 8, which is characterized in that be provided with cross-ventilation on the backboard
Hole.
10. a kind of laser television, which is characterized in that the laser television includes according to claim 7 to 9 any one
Down straight aphototropism mode set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910247584.5A CN109782490A (en) | 2019-03-28 | 2019-03-28 | Direct-light-type backlight, mould group and laser television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910247584.5A CN109782490A (en) | 2019-03-28 | 2019-03-28 | Direct-light-type backlight, mould group and laser television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109782490A true CN109782490A (en) | 2019-05-21 |
Family
ID=66491374
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910247584.5A Pending CN109782490A (en) | 2019-03-28 | 2019-03-28 | Direct-light-type backlight, mould group and laser television |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190521 |
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| RJ01 | Rejection of invention patent application after publication |