CN107329201A - Side entrance back module and display device - Google Patents
Side entrance back module and display device Download PDFInfo
- Publication number
- CN107329201A CN107329201A CN201710535019.XA CN201710535019A CN107329201A CN 107329201 A CN107329201 A CN 107329201A CN 201710535019 A CN201710535019 A CN 201710535019A CN 107329201 A CN107329201 A CN 107329201A
- Authority
- CN
- China
- Prior art keywords
- side entrance
- reflectance coating
- point material
- entrance back
- back module
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
Abstract
The present invention discloses a kind of side entrance back module, wherein, the side entrance back module includes backboard, light guide plate and reflectance coating, the light guide plate and reflectance coating are installed on the backboard, the reflectance coating has the first surface set towards the light guide plate, the first surface of the reflectance coating is coated with wavelength conversion layer, and the wavelength conversion layer is quanta point material and the mixed mixture of UV glue.Manufacturing cost when can improve quantum dot backlight module system light efficiency, and reduce display device applications quantum dot.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of side entrance back module and display device.
Background technology
Side entrance back module generally comprises backboard, center, reflectance coating, light guide plate and light source, and light guide plate is solid by center
It is scheduled on backboard, the exiting surface of light guide plate is set back to the side of backboard.Light source is fixed on the side of light guide plate, for provide into
Penetrate light.Reflectance coating is set away from the exiting surface side of light guide plate, and reflectance coating is provided with the site for even light.
Half-peak breadth (FWHM) can be produced after being stimulated due to quantum dot narrow, the high Stimulated Light of monochromatic purity, therefore, aobvious
Quantum dot is applied in showing device, the backlight of wider color gamut can be obtained.However, because the water oxygen tolerance of quanta point material is universal
It is poor, so that quantum pipe is used existing side entrance back module more, or the mode such as quantum film encapsulates quantum dot.
At present, when using quantum film mode, because the emergent light of light guide plate needs the outgoing again after quantum film, because
This, quantum film needs to use substantial amounts of quanta point material, causes cost to increase.When using quantum pipe mode, quantum pipe needs
It is fixed by extra device, and quantum pipe is easier to be hit or shakes and occur breakage, causes cost to increase.It is comprehensive
On, the production cost that quantum dot is applied to display device is higher.
The content of the invention
The main object of the present invention is to propose a kind of side entrance back module and display device, it is intended to which reducing display device should
With manufacturing cost during quantum dot.
To achieve the above object, side entrance back module proposed by the present invention includes backboard, light guide plate and reflectance coating, described
Light guide plate and reflectance coating are installed on the backboard, and the reflectance coating has the first surface set towards the light guide plate, institute
The first surface for stating reflectance coating is coated with wavelength conversion layer, and the wavelength conversion layer is that quanta point material and UV glue are mixed
Mixture.
Preferably, the backlight module also includes being arranged on the backboard and the light source in the light guide plate side,
The density of quanta point material in the wavelength conversion layer is along the light guide plate close to one end of the light source towards away from the light
One extreme direction in source is incremented by.
Preferably, the wavelength conversion layer is set in net-point shape, and the density of any region site is with the site described in
The distance between light source direct proportionality.
Preferably, the density of the vertical quanta point material is incremented by direction, site described in adjacent two on the reflectance coating
Isodensity is set.
Preferably, the site by quanta point material and UV glue by silk-screen the reflectance coating first surface shape
Into.
Preferably, the light source is blue light source, and the quanta point material is by red quantum dot material and green quantum dot
Material is mixed to form.
Preferably, the green quanta point material and the mixed proportion of the red quantum dot material are more than or equal to 3.
Preferably, the wavelength conversion layer also includes water oxygen barrier, and the water oxygen barrier is coated on the quantum dot
The outer surface of material.
Preferably, the wavelength conversion layer also includes water oxygen barrier, the water oxygen barrier and the quanta point material
Mixing, and by the UV glue curings on the first surface of the reflectance coating.
The present invention also proposes a kind of display device, and the display device includes side entrance back module, the side entering type back of the body
Optical mode group includes backboard, light guide plate and reflectance coating, and the light guide plate and reflectance coating are installed on the backboard, the reflectance coating tool
There is the first surface set towards the light guide plate, the first surface of the reflectance coating is coated with wavelength conversion layer, the wavelength
Conversion layer is quanta point material and the mixed mixture of UV glue.
The light source of the side entrance back module of the present invention sends incident light, and diffusing reflection occurs in light guide plate for incident light, leads
Part light in tabula rasa from one side incidence reflection film close to reflectance coating when, excite the wavelength for being arranged on reflectance coating first surface
Conversion layer, the wavelength conversion layer produces stimulated luminescence, and stimulated luminescence reenters light guide plate, with the shape that diffuses in light guide plate
Into mixed light.Wherein, the wavelength conversion layer that the first surface of reflectance coating is coated with, can sustainedly and stably produce stimulated luminescence.Ripple
Quanta point material in long conversion layer forms the first surface that mixture is solidificated in reflectance coating after being mixed by UV glue, to prevent
Wavelength conversion layer comes off, also, quanta point material receive exciting light after, produce half-peak breadth (FWHM) it is narrow, monochromatic purity it is high by
Exciting light, so as to increase the gamut range of mixed light, makes quanta point material apply in side entrance back module.Due to being coated with
Quanta point material compared to encapsulation quantum film or quantum pipe for, save substantial amounts of quanta point material, therefore, reduced aobvious
Manufacturing cost during showing device application quantum dot.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the internal structure schematic diagram of the embodiment of side entrance back module one of the present invention；
Fig. 2 is the internal structure schematic diagram of Fig. 1 medium wavelength conversion layers；
Fig. 3 is the scatter chart of site on the reflecting film in Fig. 1；
Fig. 4 is the front view of reflectance coating in Fig. 1.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Light guide plate | 222 | Red quantum dot material |
| 20 | Reflectance coating | 223 | Green quanta point material |
| 21 | First surface | 224 | Barrier |
| 22 | Wavelength conversion layer | 30 | Light source |
| 221 | Site |
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality indicate (such as up, down, left, right, before and after ...),
Then directionality indicate to be only used for explain relative position relation under a certain particular pose (as shown in drawings) between each part,
Motion conditions etc., if the particular pose changes, directionality indicates also correspondingly therewith to change.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, being somebody's turn to do " first ", " second " etc.
Description be only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate indicated skill
The quantity of art feature.Thus, " first " is defined, at least one spy can be expressed or be implicitly included to the feature of " second "
Levy.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that the knot of this technical scheme
Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of side entrance back module, and the display device including the backlight module, such as：Display dress
It is television set or computer monitor etc. to put, and is hereafter described further by taking television set as an example.
It is shown referring to Figures 1 and 2 in the first embodiment of side entrance back module of the present invention, the reality with arrow in figure
What line was indicated is the planes such as face, chamber, hole or space.The side entrance back module include backboard (not shown), light guide plate 10 and
Reflectance coating 20, catheter plate 10 and reflectance coating 20 are installed on backboard, and reflectance coating 20 has the first table set towards light guide plate 10
Face 21, the first surface 21 of reflectance coating 20 is coated with wavelength conversion layer 22, and wavelength conversion layer 22 is quanta point material and UV glue
Mixed mixture.
Specifically, the light source 30 of side entrance back module sends incident light, and diffusing reflection occurs in light guide plate 10 for incident light,
Part light in light guide plate 10 from one side incidence reflection film 20 close to reflectance coating 20 when, excite and be arranged on reflectance coating 20 first
The wavelength conversion layer 22 on surface 21, the wavelength conversion layer 22 produces stimulated luminescence, and stimulated luminescence reenters light guide plate 10, with leading
Diffuse to form mixed light in tabula rasa 10.Wherein, the wavelength conversion layer 22 that the first surface 21 of reflectance coating 20 is coated with, can be with
Sustainedly and stably produce stimulated luminescence.Quanta point material in wavelength conversion layer 22 forms mixture after being mixed by UV glue and consolidated
Change the first surface 21 in reflectance coating 20, to prevent wavelength conversion layer 22 from coming off, also, quanta point material is received after exciting light,
Generation half-peak breadth (FWHM) is narrow, and the high stimulated luminescence of monochromatic purity, so as to increase the gamut range of mixed light, makes quantum dot material
Material is applied in side entrance back module.Due to the quanta point material that is coated with compared to encapsulation quantum film or quantum pipe for, section
Substantial amounts of quanta point material has been saved, therefore, manufacturing cost during display device applications quantum dot has been reduced.
Herein it is necessary to clarify that, wavelength conversion layer 22 can include green light quantum point material or red light quantum point material
Material, can also include green light quantum point material and red light quantum point material.It is of course also possible to including phosphor material powder to produce it
The light of its colour gamut, is not repeated one by one herein.
Preferably, shown in reference picture 1, side entrance back module also includes being arranged on backboard and in the side of light guide plate 10
Light source 30, quanta point material in wavelength conversion layer 22 is along light guide plate 10 close to one end of light source 30 towards one away from light source 30
Extreme direction is incremented by.It is stronger close to the position light energy of light source 30 in view of wavelength conversion layer 22, and the position light away from light source 30
Energy is weaker, by the way that along light direction V is entered by dredging close distribution design, the density of wavelength conversion layer 22 can be made into stimulated luminescence
Light energy is uniformly distributed.In addition, the reflectance coating 20 so set, can make light guide plate 10 to do light energy indirectly and uniformly divide
Cloth is designed, i.e., light guide plate 10 used in inside side entrance back module does not need site silk-screen, so as to ensure light guide plate 10
Light energy it is uniform under the premise of, further save manufacturing cost during display device applications quantum dot.
Preferably, shown in reference picture 1 and Fig. 3, wavelength conversion layer 22 is set in net-point shape, any region site 221 it is close
Degree arrives the distance between light source 30 direct proportionality with site 221.The purpose so set is, both can further save
Quanta point material, simplifies production, can further make wavelength conversion layer 22 along light direction V is entered again, hold with the increase of distance
Stimulated luminescence is also easy to produce, the light energy distribution of stimulated luminescence is more uniformly distributed.
Preferably, shown in reference picture 1 and Fig. 4, the density of vertical quanta point material is incremented by direction on reflectance coating 20, adjacent
The isodensity of two site 221 is set.The benefit so set be can make stimulated luminescence along light guide plate 10 to enter light direction V vertical
Direction on light energy distribution be more uniformly distributed.Preferably, site 221 is being reflected by quanta point material and UV glue by silk-screen
The first surface 21 of film 20 is formed, to improve production efficiency, makes the position of site 221 more accurate.
Ground is changed, shown referring to Figures 1 and 2, light source 30 is blue light source, and quanta point material is by red quantum dot material
222 are mixed to form with green quanta point material 223.Due to can further reduce production cost using blue light source, and use
Blue light source is the red quantum dot material 222 in monochromatic incident light, the incident light excitation wavelength conversion layer 22, produces red
Stimulated luminescence.Meanwhile, the green quanta point material 223 in the incident light excitation wavelength conversion layer 22 produces being stimulated for green
Light.The white light that stimulated luminescence is mixed after being mixed with the monochromatic incident light of blueness.Due to green quanta point material 223 and red
After quanta point material 222 is stimulated, it can obtain that half-peak breadth (FWHM) is narrow, monochromatic purity high green glow and feux rouges, therefore, mixing
The colour gamut of light is widened.
Preferably, green quanta point material 223 and the mixed proportion of red quantum dot material 222 are more than or equal to 3 times.
It is preferred that the mixed proportion of green quanta point material 223 and red quantum dot material 222 is between 3 to 20.So setting can be with
It is more uniformly distributed the white light of mixing.Quanta point material in the present invention includes but is not limited to cadmium selenide (CdSe), perovskite
(CaTiO3), indium phosphide (InP) etc., to obtain relatively stable Stimulated Light.
Preferably, wavelength conversion layer 22 also includes water oxygen barrier 224, and water oxygen barrier 224 is coated on quanta point material
Outer surface.Ground is changed, water oxygen barrier 224 is mixed with quanta point material, and by UV glue curings, turned with synthetic wavelength
Change layer 22.Because the high-temperature behavior of quanta point material is weaker, and the tolerance of water oxygen is bad, therefore, is completely cut off by barrier 224
Water oxygen and high temperature, can make quanta point material more stable.The material of barrier 224 can be：SiO2、TiO2、Al2O3、CaCO3、
BaSO4, polymetylmethacrylate, polystyrene PS, alkene nitrile-BS ABS, polyurethane PU, have
One or more in organosilicon polymer, effectively to obstruct water oxygen under conditions of higher temperatures.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical fields in the scope of patent protection of the present invention.
Claims (10)
1. a kind of side entrance back module, including backboard, light guide plate and reflectance coating, the light guide plate and reflectance coating are installed on described
On backboard, the reflectance coating has the first surface set towards the light guide plate, it is characterised in that the first of the reflectance coating
Surface is coated with wavelength conversion layer, and the wavelength conversion layer is quanta point material and the mixed mixture of UV glue.
2. side entrance back module as claimed in claim 1, it is characterised in that the backlight module is also described including being arranged on
On backboard and the light source in the light guide plate side, the density of the quanta point material in the wavelength conversion layer is along the leaded light
Plate is incremented by close to one end of the light source towards the extreme direction away from the light source.
3. side entrance back module as claimed in claim 2, it is characterised in that the wavelength conversion layer is set in net-point shape,
The density of the site of any region and the site to the distance between light source direct proportionality.
4. side entrance back module as claimed in claim 3, it is characterised in that the vertical quantum dot on the reflectance coating
The density of material is incremented by direction, and site isodensity described in adjacent two is set.
5. the side entrance back module as described in claim 3 or 4, it is characterised in that the site is by quanta point material and UV
First surface of the glue by silk-screen in the reflectance coating is formed.
6. side entrance back module as claimed in claim 2, it is characterised in that the light source is blue light source, the quantum
Point material is mixed to form by red quantum dot material and green quanta point material.
7. side entrance back module as claimed in claim 6, it is characterised in that the green quanta point material and the red
The mixed proportion of quanta point material is more than or equal to 3.
8. side entrance back module as claimed in claim 1, it is characterised in that the wavelength conversion layer also includes water oxygen and obstructed
Agent, the water oxygen barrier is coated on the outer surface of the quanta point material.
9. side entrance back module as claimed in claim 1, it is characterised in that the wavelength conversion layer also includes water oxygen and obstructed
Agent, the water oxygen barrier is mixed with the quanta point material, and by the UV glue curings in the first of the reflectance coating
On surface.
10. a kind of display device, it is characterised in that including side entrance back mould as in one of claimed in any of claims 1 to 9
Group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710535019.XA CN107329201A (en) | 2017-07-03 | 2017-07-03 | Side entrance back module and display device |
| PCT/CN2018/093959 WO2019007296A1 (en) | 2017-07-03 | 2018-07-02 | Edge-lit backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710535019.XA CN107329201A (en) | 2017-07-03 | 2017-07-03 | Side entrance back module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107329201A true CN107329201A (en) | 2017-11-07 |
Family
ID=60197753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710535019.XA Pending CN107329201A (en) | 2017-07-03 | 2017-07-03 | Side entrance back module and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107329201A (en) |
| WO (1) | WO2019007296A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108150968A (en) * | 2017-12-26 | 2018-06-12 | 中华映管股份有限公司 | Reflectance coating |
| CN108681149A (en) * | 2018-05-03 | 2018-10-19 | 宁波东旭成新材料科技有限公司 | The quantum dot guard method of quantum dot backlight module |
| CN108873153A (en) * | 2018-07-18 | 2018-11-23 | 福州大学 | Side entrance back module based on quantum dot body light guide plate goes out light control method |
| WO2019007296A1 (en) * | 2017-07-03 | 2019-01-10 | 深圳Tcl新技术有限公司 | Edge-lit backlight module and display device |
| CN109830475A (en) * | 2019-02-18 | 2019-05-31 | 南通创亿达新材料股份有限公司 | High colour gamut quantum dot lamp bar, preparation method and its backlight module |
| CN109856859A (en) * | 2019-03-27 | 2019-06-07 | 深圳创维－Rgb电子有限公司 | A kind of side entrance back module and display equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210034995A (en) * | 2019-09-23 | 2021-03-31 | 삼성전자주식회사 | Display appartus, light guide plate thereof and manufacturin method for the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019007296A1 (en) | 2019-01-10 |
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