CN106154400A - A kind of method improving inkjet printing quantum dot dot light guide plate - Google Patents
A kind of method improving inkjet printing quantum dot dot light guide plate Download PDFInfo
- Publication number
- CN106154400A CN106154400A CN201610828845.9A CN201610828845A CN106154400A CN 106154400 A CN106154400 A CN 106154400A CN 201610828845 A CN201610828845 A CN 201610828845A CN 106154400 A CN106154400 A CN 106154400A
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- Prior art keywords
- quantum dot
- guide plate
- light guide
- dot
- inkjet printing
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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
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
Abstract
The present invention relates to a kind of method improving inkjet printing quantum dot dot light guide plate, it is intended to solve the uniform and stable sex chromosome mosaicism of quantum dot site.The present invention passes through the composition of quantum point ink and the pretreatment to substrate, by inkjet printing, quantum dot slurry is graphically printed to substrate surface according to certain, a kind of quantum dot site array being formed at substrate surface after solidification, a diameter of 250～450 um in single quantum dot site, and no more than dot matrix film diameter, it is thus achieved that uniform and stable quantum dot site.
Description
Technical field
The present invention relates to a kind of method improving inkjet printing quantum dot dot light guide plate.
Background technology
With the development of Display Technique, liquid crystal display (LCD) become numerous flat panel display device develops the most ripe,
Application surface is the widest and a kind of display device of still in fast development.It is excellent that LCD has lightening, low in energy consumption, perfect heat-dissipating etc.
Point, but LCD itself is not luminous, needs to rely on extraneous backlight.Backlight in the market is mainly gone by blue-ray LED
Excitated fluorescent powder layer or quantum dot layer realize white light, and the white light obtaining due to blue-ray LED excitated fluorescent powder layer is natural not, look
The shortcomings such as territory is narrow, and colour rendering index is low, and the glow peak of quantum dot is narrow, it is ensured that the purity of light is high；The glow color of quantum dot can
Adjusting, can realizing higher colour gamut, and luminous efficiency is higher, service life is longer.Therefore quantum dot backlight has become as and grinds
The hot topic studied carefully.
At present being mixed into the method for white light by excitation quantum point mainly has three kinds: one to be quantum dot pipe (QD Tube): will
Quantum dot colloid is encapsulated in glass tube, and then quantum dot pipe is placed on the front of LED.
This mode is to utilize capillary theory to be injected in glass tube by quantum dot, and method simple possible saves again
Quanta point material, but LED chip is generated heat more serious in the course of the work, and heat radiation can bring luminescence queenching existing to quantum dot
As reducing quantum dot light emitting efficiency, being influenced by temperature the drift phenomenon that also can bring color simultaneously；Two is quantum dot film
(QDEF): quantum dot colloid is coated in the upper surface of light guide plate, although this mode it can be avoided that the impact that brings of heat radiation,
But large area preparation causes the waste of material.Three is quantum dot site: by way of serigraphy or inkjet printing
Quantum dot slurry is transferred to the lower surface of light guide plate by mode, forms quantum dot site.Although silk-screen printing technique is simple, but
Printing precision is relatively low, and quantum dot sizing material also brings certain surplus, causes waste.Although inkjet printing can carry out on-demand
When print, saved quanta point material, but the quantum dot ink that adaptation prints at present there will be obvious coffee toroidal effect, shadow
Ringing deposition morphology, and in order to realize white balance, often carrying out secondary printing or repeatedly print, ink spreads on leaded light and causes
The area of quantum dot site becomes big, and the uniformity causing emergent light is deteriorated.
Content of the invention
It is an object of the invention to provide a kind of method improving inkjet printing quantum dot dot light guide plate, it is intended to solution amount
The uniform and stable sex chromosome mosaicism of son point site.
For achieving the above object, the technical scheme is that a kind of inkjet printing quantum dot dot light guide plate of improving
Method, by composition and the pretreatment to light guide plate of quantum point ink, uses inkjet printing to press quantum dot ink
Graphically print to light guide plate surface according to predetermined, form uniform and stable quantum dot site after solidification, obtain quantum dot site
Light guide plate.
In an embodiment of the present invention, described light guide plate is lucite, and refractive index is 1.49, and thickness is 1.4 ~ 2mm.
In an embodiment of the present invention, the described pretreatment to light guide plate, will oleophobic property film with the form in face or with
The form of dot matrix covers light guide plate.
In an embodiment of the present invention, described oleophobic property film includes polyvinylidene fluoride resin, acrylate copolymer, should
Oleophobic property film refractive index is less than or equal to 1.49.
In an embodiment of the present invention, described oleophobic property film is by blade coating or spin coating with the form covering light guide plate in face
Technique realize；Described oleophobic property film covers the technique realization that light guide plate is by printing, its single-point with the form of dot matrix
A diameter of 250 ~ 450um.
In an embodiment of the present invention, described uniform and stable quantum dot site forming process is particularly as follows: beaten by ink-jet
Quantum dot ink is graphically printed to light guide plate surface according to predetermined by print, forms quantum dot net in light guide plate surface after solidification
Point arranges, a diameter of 250～450 um in single quantum dot site, and no more than dot matrix film diameter.
In an embodiment of the present invention, the composition of described quantum dot ink includes quantum dot, solvent and polymer, by quality
Ratio, described quantum dot accounts for the 2.3%～6.8% of gross mass, and described solvent accounts for the 51.4%～76.1% of gross mass, described polymer
Account for the 17.1%～46.3% of gross mass.
In an embodiment of the present invention, described polymer is UV glue, and its composition includes esters of acrylic acid prepolymer, activity
Monomer and ultraviolet initiator.
In an embodiment of the present invention, described quantum dot is red quantum dot and the mixture of green quantum dot, including CdSe/
ZnS, InP/ZnS, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS, Size Distribution is at 1nm～10nm；Described green amount
A length of 510～540 nm of transmitted wave of son point；A length of 610～640 nm of transmitted wave of described red quantum dot.
Compared to prior art, the method have the advantages that the present invention passes through the composition of quantum point ink
And the pretreatment to substrate, by inkjet printing, quantum dot slurry is graphically printed to substrate surface according to certain, Gu
A kind of quantum dot site array being formed at substrate surface after change, a diameter of 250～450 um in single quantum dot site, and not quite
In dot matrix film diameter, it is thus achieved that uniform and stable quantum dot site；Solve the uniform and stable sex chromosome mosaicism of quantum dot site.
Brief description
Fig. 1 is the structural representation that quantum dot site is distributed on the film of oleophobic property face.
Fig. 2 be ink/substrate untreated (left figure) and process after (right figure) beat design sketch.
Fig. 3 is the structural representation that quantum dot site is distributed on oleophobic property dot matrix film.
Fig. 4 is single quantum dot lattice point structure schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is specifically described.
A kind of method improving inkjet printing quantum dot dot light guide plate of the present invention, by the one-tenth of quantum point ink
Divide and the pretreatment to light guide plate, use inkjet printing that according to predetermined, quantum dot ink is graphically printed to light guide plate table
Face, forms uniform and stable quantum dot site, obtains quantum dot dot light guide plate after solidification.
Described light guide plate is lucite, and refractive index is 1.49, and thickness is 1.4 ~ 2mm.The described pretreatment to light guide plate,
Will the form with face for the oleophobic property film or the covering light guide plate of the form with dot matrix.Described oleophobic property film includes polyvinylidene fluoride
Olefine resin, acrylate copolymer, this oleophobic property film refractive index is less than or equal to 1.49.Described oleophobic property film is with the form in face
Cover the technique that light guide plate is by blade coating or spin coating to realize；Described oleophobic property film is logical with the form covering light guide plate of dot matrix
Cross what the technique printing realized, a diameter of 250 ~ 450um of its single-point.
Described uniform and stable quantum dot site forming process is particularly as follows: pass through inkjet printing by quantum dot ink according in advance
Fixed graphically prints to light guide plate surface, forms quantum dot site in light guide plate surface and arrange after solidification, single quantum dot net
Spot diameter is 250～450 um, and no more than dot matrix film diameter.The composition of described quantum dot ink includes quantum dot, solvent
And polymer, in mass ratio, described quantum dot accounts for the 2.3%～6.8% of gross mass, described solvent account for gross mass 51.4%～
76.1%, described polymer accounts for the 17.1%～46.3% of gross mass.Described polymer is UV glue, and its composition includes acrylate
Class prepolymer, activated monomer and ultraviolet initiator.Described quantum dot is red quantum dot and the mixture of green quantum dot, including
CdSe/ZnS, InP/ZnS, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS, Size Distribution is at 1nm～10nm；Institute
State a length of 510～540 nm of transmitted wave of green quantum dot；A length of 610～640 nm of transmitted wave of described red quantum dot.
The below specific embodiment process for the present invention.
For realizing above-mentioned purpose, the solution of substrate spin coating is the optic-solidified adhesive (UV) of absolute ethyl alcohol dilution, wherein UV glue
Account for the 23.8%～58.8% of gross mass；Absolute ethyl alcohol accounts for the 41.2%～76.2% of gross mass.The quantum dot site of inkjet printing
Ink includes quantum dot, UV glue and chlorobenzene, and described quantum dot accounts for the 2.3%～6.8% of gross mass, and described UV glue accounts for gross mass
17.1%～46.3%, described chlorobenzene accounts for the 51.4%～76.1% of gross mass.
Embodiment 1
With reference to Fig. 1, for the first embodiment schematic diagram of the quantum dot dot light guide plate that the present invention provides.Described quantum dot site is led
Tabula rasa includes lucite the 101st, oleophobic property film 102 and quantum dot site 103.
Described oleophobic property film 102 is the optic-solidified adhesive (UV glue) that a kind of refractive index is 1.48.The Main Function of UV glue is
Change substrate can surface free energy, increase contact angle on substrate for the ink droplet, it is suppressed that the diffusion of ink droplet.
Described quantum dot site 103 is the mixture of red quantum dot, green quantum dot and UV glue.With reference to Fig. 4, quantum dot 105
It is dispersed in UV glue 106, add UV glue can increase the viscosity of ink in quantum dot ink, and in the effect of uviol lamp
Can be with rapid curing, it is suppressed that diffusion on substrate for the ink droplet.
For preparing above-mentioned quantum dot site, specifically comprise the following steps that
1) quantum dot ink is prepared:
First being dissolved in quantum dot in chlorobenzene solution, in lower powered Ultrasound Instrument, sonic oscillation 5～10 min makes quantum dot disperse
Uniformly；Then adding UV glue in solution, sonic oscillation 5～10 min makes UV glue be uniformly dispersed.The wherein gate of the quality monitoring of each component
System is: the quantum dot of 5.8 wt%；The UV glue of 29.2 wt%；The chlorobenzene of 65 wt%；
2) process of substrate
Preparation UV solution, wherein UV glue accounts for the 55% of solution gross mass, and absolute ethyl alcohol selected by solvent, accounts for solution gross mass
45%；UV solution is coated in the surface of lucite by the technique then using blade coating, solidifies 1 under the effect of uviol lamp
min。
3) preparation of quantum dot site
The quantum dot ink preparing is gone out site array as shown in Figure 1 by printing of inkjet printer, in order to avoid coffee
Printed quantum dot site, after print job terminates, is solidified 1 min under the effect of uviol lamp, obtains by toroidal effect immediately
Quantum dot dot light guide plate.
Fig. 2 be ink/substrate untreated (left figure) and process after (right figure) beat design sketch, as can be seen from the figure do not locate
There is obvious coffee ring the quantum dot site that reason prints, and the quantum dot site printing after processing is uniform and stable, hence it is evident that
The printing effect substantially improving quantum dot site.
Embodiment 2
With reference to Fig. 3, for the second embodiment schematic diagram of the quantum dot dot light guide plate that the present invention provides.Described quantum dot site is led
Tabula rasa includes lucite the 101st, oleophobic property film 104 and quantum dot site 103.
Described oleophobic property film 104 is to print dot matrix film by way of inkjet printing on substrate, utilizes ultraviolet
Lamp solidifies.Wherein UV glue accounts for the 55% of solution gross mass, and absolute ethyl alcohol accounts for the 45% of solution gross mass；
The chlorobenzene of the quantum dot of 5.8 wt%, the UV glue of 29.2 wt% and 65 wt% is configured to quantum dot ink by printing
Mode prints quantum dot site in initial point battle array film, utilizes ultraviolet light polymerization 1 min, obtains quantum dot dot light guide plate.
Being above presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made
With during without departing from the scope of technical solution of the present invention, belong to protection scope of the present invention.
Claims (9)
1. the method improving inkjet printing quantum dot dot light guide plate, it is characterised in that: by quantum point ink
Composition and the pretreatment to light guide plate, use inkjet printing that according to predetermined, quantum dot ink is graphically printed to light guide plate
Surface, forms uniform and stable quantum dot site, obtains quantum dot dot light guide plate after solidification.
2. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 1, it is characterised in that: institute
Stating light guide plate is lucite, and refractive index is 1.49, and thickness is 1.4 ~ 2mm.
3. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 1 and 2, its feature exists
In: the described pretreatment to light guide plate, will the form with face for the oleophobic property film or the covering light guide plate of the form with dot matrix.
4. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 3, it is characterised in that: institute
Stating oleophobic property film and including polyvinylidene fluoride resin, acrylate copolymer, this oleophobic property film refractive index is less than or equal to
1.49。
5. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 3, it is characterised in that: institute
The form stating oleophobic property film with face covers the technique realization that light guide plate is by blade coating or spin coating；Described oleophobic property film is with point
It is to be realized by the technique printing that the form of battle array covers light guide plate, a diameter of 250 ~ 450um of its single-point.
6. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 1, it is characterised in that: institute
State uniform and stable quantum dot site forming process particularly as follows: by inkjet printing by quantum dot ink according to predetermined graphical
Print to light guide plate surface, form quantum dot site in light guide plate surface after solidification and arrange, single quantum dot site a diameter of 250
～450 um, and no more than dot matrix film diameter.
7. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 6, it is characterised in that: institute
State the composition of quantum dot ink and include quantum dot, solvent and polymer, in mass ratio, described quantum dot account for gross mass 2.3%～
6.8%, described solvent accounts for the 51.4%～76.1% of gross mass, and described polymer accounts for the 17.1%～46.3% of gross mass.
8. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 7, it is characterised in that: institute
Stating polymer is UV glue, and its composition includes esters of acrylic acid prepolymer, activated monomer and ultraviolet initiator.
9. a kind of method improving inkjet printing quantum dot dot light guide plate according to claim 7, it is characterised in that: institute
Stating quantum dot is red quantum dot and the mixture of green quantum dot, including CdSe/ZnS, InP/ZnS, PbSe/PbS, CdSe/CdS,
CdTe/CdS or CdTe/ZnS, Size Distribution is at 1nm～10nm；A length of 510～540 nm of transmitted wave of described green quantum dot；Institute
State a length of 610～640 nm of transmitted wave of red quantum dot.
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| CN201610828845.9A CN106154400A (en) | 2016-09-19 | 2016-09-19 | A kind of method improving inkjet printing quantum dot dot light guide plate |
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| CN106526962A (en) * | 2016-11-28 | 2017-03-22 | 纳晶科技股份有限公司 | Light conversion membrane and preparation method thereof and display equipment |
| CN106855199A (en) * | 2017-02-04 | 2017-06-16 | 苏州星烁纳米科技有限公司 | A kind of quantum dot film and backlight module |
| CN108020882A (en) * | 2017-12-15 | 2018-05-11 | 深圳市华星光电技术有限公司 | Light guide plate and its manufacture method, backlight module |
| CN108891022A (en) * | 2018-06-25 | 2018-11-27 | 福州大学 | A kind of method of inkjet printing quantum dot light guide plate mesh point micro-structure |
| CN108919562A (en) * | 2018-07-13 | 2018-11-30 | 合肥连森裕腾新材料科技开发有限公司 | A kind of display module preventing side light leakage |
| CN108976901A (en) * | 2018-06-28 | 2018-12-11 | 北京中科纳通电子技术有限公司 | High water oxygen rejection rate quantum dot ink and preparation method thereof |
| CN109021669A (en) * | 2018-06-28 | 2018-12-18 | 北京中科纳通电子技术有限公司 | The preparation method and its usage of high water oxygen rejection rate quantum dot film |
| CN109143451A (en) * | 2018-08-31 | 2019-01-04 | 合肥泰沃达智能装备有限公司 | A kind of glass light guide plate production method |
| CN109504365A (en) * | 2018-12-31 | 2019-03-22 | 北京化工大学 | A kind of visible region continuously adjusts high stability composite luminescent material of launch wavelength and preparation method thereof |
| CN109932771A (en) * | 2019-02-18 | 2019-06-25 | 苏州星烁纳米科技有限公司 | The preparation method of quantum dot colour filter |
| WO2020043157A1 (en) * | 2018-08-29 | 2020-03-05 | Tcl集团股份有限公司 | Quantum dot mesh dot light guide plate and preparation method therefor |
| CN110873920A (en) * | 2018-08-29 | 2020-03-10 | Tcl集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
| CN110873921A (en) * | 2018-08-29 | 2020-03-10 | Tcl集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
| CN112123960A (en) * | 2020-09-27 | 2020-12-25 | 捷卡（厦门）工业科技有限公司 | Manufacturing method of light guide plate for printing light guide points |
| CN112644193A (en) * | 2021-01-07 | 2021-04-13 | 中国科学院化学研究所 | Method for preparing total internal reflection structural color pattern based on printing technology and application |
| CN114509897A (en) * | 2022-02-18 | 2022-05-17 | 南京贝迪新材料科技股份有限公司 | Quantum dot brightening composite film and preparation method thereof |
| CN114702856A (en) * | 2022-04-20 | 2022-07-05 | 广州思而特科技有限公司 | Dot ink for glass light guide plate and manufacturing method of glass light guide plate |
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| CN106526962B (en) * | 2016-11-28 | 2020-06-12 | 纳晶科技股份有限公司 | Light conversion film, preparation method thereof and display device |
| CN106526962A (en) * | 2016-11-28 | 2017-03-22 | 纳晶科技股份有限公司 | Light conversion membrane and preparation method thereof and display equipment |
| CN106855199B (en) * | 2017-02-04 | 2019-12-17 | 苏州星烁纳米科技有限公司 | Quantum dot film and backlight module |
| CN106855199A (en) * | 2017-02-04 | 2017-06-16 | 苏州星烁纳米科技有限公司 | A kind of quantum dot film and backlight module |
| CN108020882A (en) * | 2017-12-15 | 2018-05-11 | 深圳市华星光电技术有限公司 | Light guide plate and its manufacture method, backlight module |
| CN108891022A (en) * | 2018-06-25 | 2018-11-27 | 福州大学 | A kind of method of inkjet printing quantum dot light guide plate mesh point micro-structure |
| CN108976901A (en) * | 2018-06-28 | 2018-12-11 | 北京中科纳通电子技术有限公司 | High water oxygen rejection rate quantum dot ink and preparation method thereof |
| CN109021669A (en) * | 2018-06-28 | 2018-12-18 | 北京中科纳通电子技术有限公司 | The preparation method and its usage of high water oxygen rejection rate quantum dot film |
| CN108919562A (en) * | 2018-07-13 | 2018-11-30 | 合肥连森裕腾新材料科技开发有限公司 | A kind of display module preventing side light leakage |
| CN110873920A (en) * | 2018-08-29 | 2020-03-10 | Tcl集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
| CN110873920B (en) * | 2018-08-29 | 2021-01-22 | Tcl科技集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
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| CN110873921B (en) * | 2018-08-29 | 2021-04-09 | Tcl科技集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
| CN110873921A (en) * | 2018-08-29 | 2020-03-10 | Tcl集团股份有限公司 | Quantum dot mesh point light guide plate and preparation method thereof |
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| CN109932771A (en) * | 2019-02-18 | 2019-06-25 | 苏州星烁纳米科技有限公司 | The preparation method of quantum dot colour filter |
| CN109932771B (en) * | 2019-02-18 | 2021-06-29 | 苏州星烁纳米科技有限公司 | Preparation method of quantum dot color filter |
| CN112123960A (en) * | 2020-09-27 | 2020-12-25 | 捷卡（厦门）工业科技有限公司 | Manufacturing method of light guide plate for printing light guide points |
| CN112644193A (en) * | 2021-01-07 | 2021-04-13 | 中国科学院化学研究所 | Method for preparing total internal reflection structural color pattern based on printing technology and application |
| CN112644193B (en) * | 2021-01-07 | 2021-10-15 | 中国科学院化学研究所 | Method for preparing total internal reflection structural color pattern based on printing technology and application |
| CN114509897A (en) * | 2022-02-18 | 2022-05-17 | 南京贝迪新材料科技股份有限公司 | Quantum dot brightening composite film and preparation method thereof |
| CN114509897B (en) * | 2022-02-18 | 2023-08-29 | 南京贝迪新材料科技股份有限公司 | Quantum dot brightening composite film and preparation method thereof |
| CN114702856A (en) * | 2022-04-20 | 2022-07-05 | 广州思而特科技有限公司 | Dot ink for glass light guide plate and manufacturing method of glass light guide plate |
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