CN107238880A - A kind of diffusion barrier, backlight module and preparation method thereof - Google Patents
A kind of diffusion barrier, backlight module and preparation method thereof Download PDFInfo
- Publication number
- CN107238880A CN107238880A CN201710487648.XA CN201710487648A CN107238880A CN 107238880 A CN107238880 A CN 107238880A CN 201710487648 A CN201710487648 A CN 201710487648A CN 107238880 A CN107238880 A CN 107238880A
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- China
- Prior art keywords
- diffusion barrier
- tinted
- gold
- coating
- resin
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention provides a kind of diffusion barrier, including face-coating, back coating and base material, the back coating includes gold-tinted absorbent and fluorescent material, the blue light that LED is produced absorbs by fluorescent material, it is changed into gold-tinted, in order to ensure white balance, the gold-tinted produced is absorbed by adding gold-tinted absorbent, ensure the purpose of briliancy and white balance while filtering out blue light so as to reach, present invention also offers the backlight module using the diffusion barrier and the method for preparing the diffusion barrier.
Description
Technical field：
The present invention relates to optical diaphragm assembly, and in particular to diffusion barrier, backlight module and manufacture method.
Background technology：
Preventing the scheme of blue light at present includes software engineering, LED lamp source adjustment, Filming Technology, anti-blue light optometric technology, use
Eye time control, dietotherapy.Software engineering mainly reduces blue light by reducing screen intensity, although can significantly reduce blue light,
But to sacrifice screen intensity as cost.LED lamp bead adjustment technology, mainly by improving fluorescent material formula in lamp bead, reaches
The purpose of blue light is reduced, the current technology is under study for action.Filming Technology is coated on diaphragm using blue-light absorbers, blue light absorption
Agent sponges blue light, so as to achieve the goal, current subject matter is that pad pasting has reflective, under strong light, screen jaundice.It is anti-
Blue light glasses, by plating one layer of blue-light absorbers on eyeglass, so as to achieve the goal, are limited in that not all people wears
Glasses.The effect of diffusion barrier is the spot light for sending lamp source in current LCD, by diffusant, is changed into area source, diffusion barrier pair
Blue light does not have any cut-off to act on.
The content of the invention：
On the one hand the purpose of the present invention provides a kind of high brightness anti-blue light diffusion barrier, solves to be used to end blue light purpose, together
When can guarantee that high brightness, white balance.
It is a further object to provide a kind of backlight module.
It is a further object to provide a kind of preparation method of diffusion barrier.
To achieve the above object, the technical scheme is that：
A kind of diffusion barrier, including face-coating, back coating and base material, it is characterised in that the back side is applied
Include gold-tinted absorbent and fluorescent material.
Further, the face-coating includes diffusant, resin, curing agent, additive, and the resin includes modified third
Olefin(e) acid ester and modified polyurethane.
Further, the back coating also includes diffusant, resin, curing agent, additive, and the resin includes modification
Acrylate and modified polyurethane.
Further, the gold-tinted absorbent be selected from metal complex, monoazo class dyestuff, di-azo dyes,
Contain the one or more in the heteroatomic polycyclic organic matter of conjugation.
Further, the fluorescent material selected from rare-earth garnet system, silicate, nitrogen-containing compound system, it is sulfide-based in
One or more.
Further, the base material is selected from polyethylene terephthalate (PET), polypropylene (PP), triacetate fiber
Film (TAC).
Further, the ratio that described back of the body coating layer gold-tinted absorbent accounts for coating fluid is 0.1-10%, and fluorescent material accounts for painting
The ratio of cloth liquid is 0.1-10%.
Further, the diffusion agent material is selected from polymethyl methacrylate (PMMA), Vinalac 5920
(PBMA) one or more in, polystyrene (PS), nylon (Nylon), polyurethane (PU), silicon (silicon), melamine class.
A kind of backlight module, includes described diffusion barrier.
A kind of manufacture method for including above-mentioned diffusion barrier, is comprised the following steps：
S1, the preparation of the face-coating：By the way of gravure roll is coated with, will containing diffusant, resin, curing agent,
The mixture of additive is coated on the surface of base material (2) one, is solidified using heat cure mode；
S2, the preparation of the back coating：By the way of gravure roll is coated with, it will be absorbed containing diffusant, resin, gold-tinted
Agent, fluorescent material, initiator, the mixture of additive are coated on base material (2) another surface, are solidified using UV curing modes.
Diffusion barrier described herein, the blue light that LED is produced absorbs by fluorescent material, is changed into gold-tinted, in order to ensure white balance,
By adding the gold-tinted that champac light absorbs material absorbing is produced, blue light is filtered out so as to reach, while ensureing briliancy and white balance
Purpose.
Brief description of the drawings：
With reference to structural representation Fig. 1 and embodiment, the present invention is further described.
Fig. 1 shows a kind of structural representation for diffusion barrier that the present invention is provided.
Embodiment：
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
As described by background section, although can significantly reduce blue light in the prior art, to sacrifice
Screen intensity is cost.
In order to solve this problem, the invention provides a kind of diffusion barrier, including face-coating, back coating and base material,
Characterized in that, the back side, which is applied, includes gold-tinted absorbent and fluorescent material.
In the above-mentioned diffusion barrier that the present invention is provided, the blue light that LED is produced absorbs by fluorescent material, is changed into gold-tinted, in order to
Ensure white balance, by adding the gold-tinted that champac light absorbs material absorbing is produced, blue light is filtered out so as to reach, while ensureing briliancy
And the purpose of white balance.
Beneficial effects of the present invention are further illustrated by the following examples：
Face-coating is made up of following component：
Ethyl acetate, butyl acetate, acrylic resin modified, diffusant (5 μm of PMMA particles：12 μm of PMMA particles=
2:1), additive, curing agent.
The back coating is made up of following component：
Ethyl acetate, acrylic resin modified, diffusant (5 μm, nylon), gold-tinted absorbent, fluorescent material, additive, draw
Send out agent.
Using 188um PET as base material, face-coating uses gravure roll coating method, is passed through with 30m/min speed
Oven drying solvent, after heat cure, winding.
Backsize uses the semi-finished product of previous step, using gravure roll coating method, passes through baking oven with 35m/min speed
Solvent is dried, UV solidifications are carried out with the energy more than 300mJ.
Each component and content refer to table 1 in specific embodiment.
Table 1
Finished product is cured in 60 DEG C of curing chambers, after curing 24h, is tested, test result refer to table 2.
Table 2
Understand that gold-tinted absorbent and fluorescent material select 1 by embodiment 1-7:100~100:1 proportioning can effectively filter out blue light
While ensure briliancy and white balance, preferably 1:3~1:10；It is more excellent to be：3:20.
The foregoing is only the preferred embodiment of invention, be not intended to limit the present invention, it is all the spirit and principles in the present invention it
Interior made modifications, equivalent substitutions and improvements etc., should be included in the scope of the protection.Attempt according to this to the present invention
Make any formal limitation, therefore all have any modification or change for making the relevant present invention under identical spirit,
It should all be included in that the invention is intended to the category protected.
Claims (10)
1. a kind of diffusion barrier (100), including face-coating (1), back coating (3) and base material (2), face-coating (1) bag
Diffusant, resin, curing agent, additive are included, the resin includes modification acrylate and modified polyurethane, it is characterised in that
The back coating (3) includes gold-tinted absorbent and fluorescent material.
2. diffusion barrier (100) according to claim 1, it is characterised in that the gold-tinted absorbent and fluorescent material mass parts
Than for 1:100~100:1.
3. diffusion barrier (100) according to claim 1, it is characterised in that the back coating (3) also include diffusant,
Resin, curing agent, additive, the resin include modification acrylate and modified polyurethane.
4. diffusion barrier (100) according to claim 1, it is characterised in that the gold-tinted absorbent is selected from metal-complexing
Compound, monoazo class dyestuff, di-azo dyes, the one or more contained in the polycyclic organic matter of heteroatomic conjugation.
5. diffusion barrier (100) according to claim 1, it is characterised in that the fluorescent material is selected from rare-earth garnet system, silicon
Phosphate-gallate series, nitrogen-containing compound system, it is sulfide-based in one or more.
6. diffusion barrier (100) according to claim 1, it is characterised in that the base material (2) is selected from poly terephthalic acid second
Diol ester (PET), polypropylene (PP), triacetate fiber film (TAC).
7. diffusion barrier (100) according to claim 1, it is characterised in that gold-tinted described in the back coating (3) absorbs
The ratio that agent accounts for coating fluid is 0.1-10%；The ratio that the fluorescent material accounts for coating fluid is 0.1-10%.
8. the diffusion barrier (100) according to claim 1 or 3, it is characterised in that diffusion agent material is selected from polymethylacrylic acid
Methyl esters (PMMA), Vinalac 5920 (PBMA), polystyrene (PS), nylon (Nylon), polyurethane (PU), silicon
(silicon), the one or more in melamine class.
9. a kind of backlight module, includes the diffusion barrier (100) described in claim any one of 1-8.
10. the manufacture method of any one of a kind of claim 1-8 diffusion barrier, it is characterised in that comprise the following steps：
S1, the preparation of the face-coating (1)：By the way of gravure roll is coated with, will containing diffusant, resin, curing agent, add
Plus the mixture of agent is coated on the surface of base material (2) one, is solidified using heat cure mode；
S2, the preparation of the back coating (2)：By the way of gravure roll is coated with, it will be absorbed containing diffusant, resin, gold-tinted
Agent, fluorescent material, initiator, the mixture of additive are coated on base material (2) another surface, are solidified using UV curing modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487648.XA CN107238880A (en) | 2017-06-23 | 2017-06-23 | A kind of diffusion barrier, backlight module and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487648.XA CN107238880A (en) | 2017-06-23 | 2017-06-23 | A kind of diffusion barrier, backlight module and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107238880A true CN107238880A (en) | 2017-10-10 |
Family
ID=59987951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710487648.XA Pending CN107238880A (en) | 2017-06-23 | 2017-06-23 | A kind of diffusion barrier, backlight module and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107238880A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240610A (en) * | 2018-03-16 | 2018-07-03 | 张家港康得新光电材料有限公司 | A kind of indigo plant light conversion film and its preparation method and application |
| WO2020007133A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳Tcl新技术有限公司 | Backlight source module |
| CN111316156A (en) * | 2018-10-19 | 2020-06-19 | 深圳市珏琥显示技术有限公司 | Optical film, backlight module and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207421A (en) * | 2012-08-30 | 2013-07-17 | 湖北航天化学技术研究所 | Diffusion film and production method |
| CN106019444A (en) * | 2016-05-25 | 2016-10-12 | 张家港康得新光电材料有限公司 | Yellow light absorption structure and backlight module having the same |
| CN106405706A (en) * | 2016-06-06 | 2017-02-15 | 安徽省光学膜材料工程研究院有限公司 | Blue light conversion diffusion barrier |
-
2017
- 2017-06-23 CN CN201710487648.XA patent/CN107238880A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207421A (en) * | 2012-08-30 | 2013-07-17 | 湖北航天化学技术研究所 | Diffusion film and production method |
| CN106019444A (en) * | 2016-05-25 | 2016-10-12 | 张家港康得新光电材料有限公司 | Yellow light absorption structure and backlight module having the same |
| CN106405706A (en) * | 2016-06-06 | 2017-02-15 | 安徽省光学膜材料工程研究院有限公司 | Blue light conversion diffusion barrier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240610A (en) * | 2018-03-16 | 2018-07-03 | 张家港康得新光电材料有限公司 | A kind of indigo plant light conversion film and its preparation method and application |
| WO2020007133A1 (en) * | 2018-07-04 | 2020-01-09 | 深圳Tcl新技术有限公司 | Backlight source module |
| CN110687716A (en) * | 2018-07-04 | 2020-01-14 | 深圳Tcl新技术有限公司 | Backlight module |
| CN111316156A (en) * | 2018-10-19 | 2020-06-19 | 深圳市珏琥显示技术有限公司 | Optical film, backlight module and display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20171010 |