CN106443870B - It is a kind of for improving the method for manufacturing light guide plate, light guide plate and backlight module of colour gamut and yield - Google Patents
It is a kind of for improving the method for manufacturing light guide plate, light guide plate and backlight module of colour gamut and yield Download PDFInfo
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- CN106443870B CN106443870B CN201611186537.7A CN201611186537A CN106443870B CN 106443870 B CN106443870 B CN 106443870B CN 201611186537 A CN201611186537 A CN 201611186537A CN 106443870 B CN106443870 B CN 106443870B
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- Prior art keywords
- light guide
- guide plate
- colour gamut
- fluorescent powder
- yellow fluorescent
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Classifications
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- 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
- G02B6/0003—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 doped with fluorescent agents
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into 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
- G02B6/0033—Means for improving the coupling-out of light from 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
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The invention proposes a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, comprising the following steps: firstly, allotment yellow fluorescent powder ink；Then, according to the range in backlight module high colour gamut failure area, by site plate-making at steel wire or polyester webs, design from outside to inside, point site from large to small, deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, by press printing in light guide plate incidence surface, yellow fluorescent powder ink is set on light guide plate by IR oven；Subsequently, according to the range of back light board group visible area, the site of design point or line is input on laser machine computer, and the variation tendency of light energy is arranged, and carries out laser dotting to the light guide plate of process yellow fluorescence powder ink.The present invention improves backlight module colour gamut, and optical brightness is unaffected, and product yield is substantially improved.
Description
Technical field
The present invention relates to field of backlights, in particular to a kind of method for manufacturing light guide plate further relates to a kind of light guide plate, Yi Jiyi
Kind backlight module.
Background technique
Liquid crystal display industry increasingly focuses in bright gay color and high brightness at present, and reliability requirement is also higher and higher.It is existing
Side-light type TV backlight module, generally use blue-ray light and realized with the mode that quantum film combines, as shown in Figure 1, backlight module
Include: the blue led 10 that side is set, sets gradually reflector plate 6, light guide plate 5, refraction blue-ray light 4, quantum from inside to outside
Film 3, brightening piece 2 and diffuser plate 1, light guide plate 5 are bonded reflection bar 7 except other three sides of lamp bar side, will be above-mentioned by backboard or glue frame 9
Modules are fixedly assembled.
The part of most critical is exactly light guide plate in entire backlight module, and function is the direction for guiding light and advancing, by line
Light source or point light source become uniform area source.The display picture of high-quality is obtained, the uniformity for the light that backlight projects is non-
Often important, light guide plate is exactly the critical optical element for reaching this purpose, and direction required for light can be oriented to by it reaches it
To the brightness and the uniformity of requirement.
Light guide plate incidence surface is covered with different size of point or line, and it is equal by the site progress light on light guide plate to open power supply
And reflection.Currently, the mode that site processes on light guide plate is broadly divided into: printing light guide plate mesh point, laser light guide plate are got ready or heat
Roll light guide plate mesh point.
As shown in Fig. 2, laser light guide plate gets the mode of (or routing) ready by inputting different energy, the depth at control point
The reflection of different zones light is carried out with length, this mode, which cannot achieve, has the site of other colors to improve color on light guide plate
Domain.
As shown in figure 3, heat rolling light guide plate mesh point mode is by being covered with site, former material light guide plate in visible area mold
Automatically it is covered with site when extrusion board, this mode cannot achieve the site of other colors also to improve colour gamut.
As shown in figure 3, printing light guide plate mesh point mode carries out the anti-of light using the point of light guide ink printing different-diameter
It penetrates, it is also possible to which the ink of other colors prints in a certain region, improves colour gamut, but colour gamut raising is with yield reduction and cost
Increasing is cost, because prior art behind light guide plate surrounding process yellow fluorescent powder site, reflects to improve light guide plate
Then the ability of light carries out a net-point printing again, be equivalent to and carried out 2 printings to light guide plate, therefore light guide plate exists
It easily scratches, easily shifts, the problems such as easy leak source in printing process, easy site defect, the fraction defective of production will carry out double, increase
The pressure of addition sheet, and case study is managed in optical index control, printing process, positioning is difficult the item for having batch production
Part.
How a kind of method improving backlight module colour gamut and yield is provided, is current urgent problem to be solved.
Summary of the invention
To solve above-mentioned the deficiencies in the prior art, the present invention proposes that a kind of light guide plate for improving colour gamut and yield makes
Method, light guide plate and backlight module.
The technical scheme of the present invention is realized as follows:
It is a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, comprising the following steps:
Firstly, allotment yellow fluorescent powder ink:
Choose 18~22 parts by weight of yellow fluorescent powder of foundation cream wavelength 470nm~580nm
17~21 parts by weight of cyclohexanone solvent
30~34 parts by weight of disalt base ester
3~7 parts by weight of ethers
20~24 parts by weight of acrylic resin
1~3 parts by weight of auxiliary agent
Said components stirring is fused together；
Then, according to the range in backlight module high colour gamut failure area, by site plate-making at steel wire or polyester webs, design from
It is outer to arrive the interior, site of point from large to small, deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, print is passed through
Brush machine is printed on light guide plate incidence surface, and yellow fluorescent powder ink is set on light guide plate by IR oven；
Subsequently, according to the range of back light board group visible area, the site of design point or line is input to laser machine computer
On, and the variation tendency of light energy is set, laser dotting is carried out to the light guide plate of process yellow fluorescence powder ink.
Optionally, by the yellow fluorescent powder of foundation cream wavelength 470nm~580nm, cyclohexanone solvent, disalt base ester, ethers, third
Olefin(e) acid resin, auxiliary agent are stirred 25~35 minutes by 20:19:32:5:22:2 weight ratio and are fused together.
Optionally, the disalt base ester is butyl acetate.
Optionally, the ethers is butyl.
Optionally, the auxiliary agent is low molecular weight unsaturation polycarboxylic acid polymers and polysiloxane copolymer.
Optionally, laser dotting positioning returns origin using machine, and the origin instructs one angle of tabula rasa, according to it is non-can
The region that vision area range is left white up and down in laser machine computer input left and right.
Optionally, described that deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, pass through printing machine
It is printed on after light guide plate incidence surface, transmission belt is set in printing fluorescent powder site by 100 DEG C of IR ovens of setting first
Above light guide plate；Then by the cooling of ion fan, the guide-lighting plate temperature after making baking is reduced to 10 DEG C；Last conveyer belt will
Cooling process yellow fluorescent powder light guide plate transmits laser machine.
The invention also provides a kind of light guide plates made using the above method.
The invention also provides a kind of backlight assemblies containing above-mentioned light guide plate.
Optionally, above-mentioned backlight assembly includes: the blue led that side is arranged in, and sets gradually reflector plate from inside to outside, leads
Tabula rasa, refraction blue-ray light, quantum film, brightening piece and diffuser plate, light guide plate are bonded reflection bar except other three sides of lamp bar side.
The beneficial effects of the present invention are:
(1) improve backlight module colour gamut, and optical brightness is unaffected；
(2) product yield is substantially improved.
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
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of exemplary backlit mould group；
Fig. 2 is the effect picture that laser light guide plate is got ready；
Fig. 3 is the effect picture that printing/heat rolls light guide plate mesh point；
Fig. 4 is method for manufacturing light guide plate flow chart of the invention；
Fig. 5 a is the structural schematic diagram of backlight assembly of the invention；
Fig. 5 b is the structural schematic diagram of light guide plate of the invention.
The title of each component or structure is as follows in figure:
1 is diffuser plate；2 be brightening piece；3 be quantum film；4 be refraction blue-ray light；5 be light guide plate；6 be reflector plate；7 be anti-
Penetrate item；8 be site；9 be backboard/glue frame；10 be blue led；11 be laser fluorescence powder site；12 be laser dotting；13 be print
Brush yellow fluorescent powder site.
Specific embodiment
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 embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The invention proposes a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, as shown in figure 4, including following
Step:
Firstly, allotment yellow fluorescent powder ink:
Choose 18~22 parts by weight of yellow fluorescent powder of foundation cream wavelength 470nm~580nm
17~21 parts by weight of cyclohexanone solvent
30~34 parts by weight of disalt base ester
3~7 parts by weight of ethers
20~24 parts by weight of acrylic resin
1~3 parts by weight of auxiliary agent
Said components stirring is fused together, is not precipitated；
Then, according to the range in backlight module high colour gamut failure area, by site plate-making at steel wire or polyester webs, design from
It is outer to arrive the interior, site of point from large to small, deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, print is passed through
Brush machine is printed on light guide plate incidence surface, and yellow fluorescent powder ink is set on light guide plate by IR oven；
Subsequently, according to the range of back light board group visible area, the site of design point or line is input to laser machine computer
On, and the variation tendency of light energy is set, laser dotting is carried out to the light guide plate of process yellow fluorescence powder ink.Laser dotting is fixed
Origin is returned using machine in position, this one angle of origin finger mark brush fluorescent powder light guide plate, according to non-visible area range in laser machine computer
The region that input left and right is left white up and down, laser head can be defaulted automatically.
As shown in figure 5 a and 5b, laser fluorescence powder site 11 includes process yellow fluorescent powder oil on light guide plate of the invention
Black site 13 and laser dotting 12 when avoiding 2 printings, position the displacement being easy to produce, scratch, leak source, shadow, white group etc. and ask
Topic.
The determination of colour gamut failure area's range is that it is glimmering not use printing in backlight module first before light guide plate making step
Light powder light guide plate, confirmation colour gamut failure area.
According to a preferred embodiment of the present invention, by the yellow fluorescent powder of foundation cream wavelength 470nm~580nm, cyclohexanone
Solvent, disalt base ester, ethers, acrylic resin (PQ611N), auxiliary agent by 20:19:32:5:22:2 weight ratio stirring 25~
It is fused together within 35 minutes.Above-mentioned disalt base ester is preferably butyl acetate.Above-mentioned ethers is preferably butyl.It is above-mentioned to help
Agent is preferably low molecular weight unsaturation polycarboxylic acid polymers and polysiloxane copolymer (BYK-P104S).
Therefore, above preferred embodiment according to the present invention, by the yellow fluorescent powder of foundation cream wavelength 470nm~580nm, ring
Hexanone solvent, butyl acetate, butyl, acrylic resin (PQ611N), the polymerization of low molecular weight unsaturation polybasic carboxylic acid
Object is stirred 30 minutes by 20:19:32:5:22:2 weight ratio with polysiloxane copolymer (BYK-P104S) and is fused together,
Obtain yellow fluorescent powder ink.
It is above-mentioned by site plate-making in the step of steel wire or polyester webs, preferably 350 mesh steel wires or polyester webs.
It is above-mentioned that deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, it is being led by press printing
After tabula rasa incidence surface, for transmission belt first by 100 DEG C of IR ovens of setting, effect is to be set in printing fluorescent powder site to lead
Above tabula rasa；Then by the cooling of ion fan, effect is that the guide-lighting plate temperature after baking is made to be reduced to 10 DEG C；Finally convey
The process yellow fluorescent powder light guide plate cooled down is transmitted laser machine by band.
It can be made using the above method proposed by the invention a kind of for improving the light guide plate of colour gamut and yield.
By assembling light guiding plate of the invention in the backlight module comprising blue led Yu quantum film, in entire backlight module
In the case that power, voltage, colour temperature are constant, lamp bar side is removed, the reflector plate of other three sides of laser fluorescence powder light guide plate fitting is from four
The blue light that edge reflections come out is sponged by the yellow fluorescent powder that laser fluorescence powder light guide plate surrounding is printed and sees, and because surrounding prints
The place of brush fluorescent powder has carried out laser dotting simultaneously, not will cause four side blanking bars.
The present invention improves backlight module colour gamut, and optical brightness is unaffected, and product yield is substantially improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, which comprises the following steps:
Firstly, allotment yellow fluorescent powder ink:
Choose 18~22 parts by weight of yellow fluorescent powder of foundation cream wavelength 470nm~580nm
17~21 parts by weight of cyclohexanone solvent
30~34 parts by weight of butyl acetate
3~7 parts by weight of butyl
20~24 parts by weight of acrylic resin
1~3 parts by weight of auxiliary agent
Said components stirring is fused together；
Then, according to the range in backlight module high colour gamut failure area, by site plate-making at steel wire or polyester webs, design from outside to
The interior, site of point from large to small, deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, printing machine is passed through
It is printed on light guide plate incidence surface, yellow fluorescent powder ink is set on light guide plate by IR oven；
Subsequently, according to the range of back light board group visible area, the site of design point or line is input on laser machine computer, and
The variation tendency of light energy is set, laser dotting is carried out to the light guide plate of process yellow fluorescence powder ink.
2. as described in claim 1 a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, which is characterized in that by powder
The yellow fluorescent powder of bottom wavelength 470nm~580nm, butyl acetate, butyl, acrylic resin, helps cyclohexanone solvent
Agent is stirred 25~35 minutes by 20:19:32:5:22:2 weight ratio and is fused together.
3. as described in claim 1 a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, which is characterized in that described
Auxiliary agent is low molecular weight unsaturation polycarboxylic acid polymers and polysiloxane copolymer.
4. as described in claim 1 a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, which is characterized in that described
Laser dotting positioning returns origin using machine, and the origin instructs one angle of tabula rasa, according to non-visible area range in laser electromechanics
The region that brain input left and right is left white up and down.
5. as described in claim 1 a kind of for improving the method for manufacturing light guide plate of colour gamut and yield, which is characterized in that described
Deployed yellow fluorescent powder ink is coated on steel wire or polyester webs, by press printing light guide plate incidence surface it
Afterwards, transmission belt is set in printing fluorescent powder site above light guide plate by 100 DEG C of IR ovens of setting first；Then pass through
The cooling of ion fan, the guide-lighting plate temperature after making baking are reduced to 10 DEG C；Last conveyer belt is by cooling process yellow fluorescence
Powder light guide plate transmits laser machine.
6. a kind of light guide plate using the method production of any one of claim 1 to 5.
7. a kind of backlight assembly containing light guide plate described in claim 6.
8. backlight assembly as claimed in claim 7 characterized by comprising the blue led of side is arranged in, from inside to outside
It sets gradually reflector plate, light guide plate, refraction blue-ray light, quantum film, brightening piece and diffuser plate, light guide plate and removes other three sides of lamp bar side
It is bonded reflection bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186537.7A CN106443870B (en) | 2016-12-20 | 2016-12-20 | It is a kind of for improving the method for manufacturing light guide plate, light guide plate and backlight module of colour gamut and yield |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201611186537.7A CN106443870B (en) | 2016-12-20 | 2016-12-20 | It is a kind of for improving the method for manufacturing light guide plate, light guide plate and backlight module of colour gamut and yield |
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| Publication Number | Publication Date |
|---|---|
| CN106443870A CN106443870A (en) | 2017-02-22 |
| CN106443870B true CN106443870B (en) | 2019-01-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238887B (en) * | 2017-07-07 | 2021-07-02 | 青岛国骐光电科技有限公司 | TV light guide plate |
| CN108983450B (en) * | 2018-07-06 | 2024-02-27 | 青岛国骐光电科技有限公司 | Board inspection device, inspection system and inspection method |
| CN112859219A (en) * | 2021-03-11 | 2021-05-28 | 绵阳捷智科技股份有限公司 | Preparation method of quantum dot diffusion plate |
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| CN103293762A (en) * | 2012-02-29 | 2013-09-11 | 上海中航光电子有限公司 | Liquid crystal display module, backlight module and light guide plate of liquid crystal display |
| CN104777670A (en) * | 2015-05-05 | 2015-07-15 | 武汉华星光电技术有限公司 | Quantum dot membrane and liquid crystal displayer |
| CN105988159A (en) * | 2015-06-30 | 2016-10-05 | 乐视致新电子科技（天津）有限公司 | Fabrication method of light guide board, backlight module set and display device |
| CN106019463A (en) * | 2016-07-28 | 2016-10-12 | 广州创维平面显示科技有限公司 | Composite net dot light guide plate and manufacturing method thereof, backlight module and liquid crystal displayer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661544B (en) * | 2012-04-27 | 2015-09-02 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal indicator |
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2016
- 2016-12-20 CN CN201611186537.7A patent/CN106443870B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293762A (en) * | 2012-02-29 | 2013-09-11 | 上海中航光电子有限公司 | Liquid crystal display module, backlight module and light guide plate of liquid crystal display |
| CN104777670A (en) * | 2015-05-05 | 2015-07-15 | 武汉华星光电技术有限公司 | Quantum dot membrane and liquid crystal displayer |
| CN105988159A (en) * | 2015-06-30 | 2016-10-05 | 乐视致新电子科技（天津）有限公司 | Fabrication method of light guide board, backlight module set and display device |
| CN106019463A (en) * | 2016-07-28 | 2016-10-12 | 广州创维平面显示科技有限公司 | Composite net dot light guide plate and manufacturing method thereof, backlight module and liquid crystal displayer |
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Effective date of registration: 20200224 Address after: No.36, Yuyuan Third Road, Jihongtan street, Chengyang District, Qingdao, Shandong Province Patentee after: Qingdao Guoqi Photoelectric Technology Co., Ltd Address before: 266000 jade Ridge Industrial Zone, Chengyang District, Shandong, Qingdao Patentee before: Qingdao Qiji Photoelectric Technology Co.,Ltd. |