CN207780296U - A kind of low blue light optical film of liquid crystal display - Google Patents
A kind of low blue light optical film of liquid crystal display Download PDFInfo
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Abstract
The utility model provides a kind of low blue light optical film of liquid crystal display, which includes：Substrate layer, functional layer and protective layer, base material are placed between functional layer and protective layer, and at least one inorganic blue absorbent, and at least one organic blue-light absorbers or organic-inorganic hybrid blue light luminescent absorbent are contained in functional layer and/or protective layer；Inorganic blue absorbent includes meta-aluminate or metastannic acid salt.Scheme provided by the utility model has given full play to the synergistic function that specific inorganic compound (inorganic blue absorbent) is generated with organic blue-light absorbers, organic-inorganic hybrid blue light luminescent absorbent, composite request of the field of display to filter blue light effect, light transmittance and stability can be met, and operability is strong, has prodigious actual application value.
Description
Technical field
The utility model belongs to LCD Technology field, and in particular to a kind of liquid crystal display is thin with low blue light optical
Film.
Background technology
As LED light source is widely used in liquid crystal display (TV, Shang Xian, industrial display, computer monitor, notebook
Computer, tablet, mobile phone and vehicle-mounted etc.) industry, energy saving highlighted performance is by the generally approval in industry；But due to its principle
On there are short-wave band blue light residuals can excessively lead to having injury to human eye, therefore also denounced by industry always；This problem is current
One of solution is exactly to increase low blue light diaphragm or plank, but due to being limited by technology and material, currently available technology
It is not effect unobvious, is exactly that performance is unstable (filter blue light effect will appear apparent decaying in the operating condition), and to whole
A wave band (including long-wave band visible light part other than blue light) translucency has an impact, and causes brightness decreased significantly, it is difficult to quilt
Industry receives and applies；Also a kind of scheme is by removing part by 460nm or more is moved on LED chip peak wavelength
The method of short-wave band blue light solves, but due to elongated, the efficiency of the wavelength blue light excitated fluorescent powder using the wavelength of such chip
It is decreased obviously that reduce amplitude so as to cause brightness larger, and the blue light ratio of 460nm or less wavelength or higher, to can not
It promotes the use of.
For removing blue light, two mistaken ideas are always existed in industry：
Mistaken ideas one namely understanding to blue light harm, it is believed that all blue lights are all harmful；As coloured light three primary colors RGB its
In blue light of the same colour exist everywhere, including also have blue light in sunlight, no blue light will lack color and not become white light；But sunlight
It is higher that middle blue light energy is distributed in the longer nearly blue light of wave band, and it is relatively low (see figure to belong to short-wave band wavelength 460nm blue light energies below
1)；But the design of LED light source is based on (or red green glimmering with the blue light excitation yellow fluorescent powder for belonging to short-wave band wavelength 450nm or so
Light powder) yellow light or red-green glow are formed, and the blue light of remainder is white light as of the same colour and light colour mixture that is ejecting, is so passed through
Confirm that efficiency is very high, this is also the main reason for LED light source industry is grown rapidly in recent years；But consider launching efficiency, excitation
The blue light peak wavelength of fluorescent powder designs between 440-450nm more, causes this wave band and its adjacent band blue light partially strong (see figure
2)；Prove that wave band injures maximum in the blue light of 435-440nm or so to human eye through medical field, blue light harm coefficient is also formed thus
National standard (GB/T20145-2006), refers in the national standard that " table 2 evaluates the spectral weighting letter that broadband light source endangers retina
Number " content；Namely really filter blue light should mainly be directed to have the energy accounting of injury larger human eye in LED light source
Short-wave band blue light, and the blue light of not all wave band will filter." table 2 evaluates broadband light from GB/T 20145-2006
The spectrum weighted function that retina is endangered in source " and LED light source Energy distribution see that it is 420- to endanger larger wave band (see Fig. 2)
460nm, therefore should emphasis processing wavelength high energy blue light between 420-460nm.
Mistaken ideas two think that blue light is needed all to filter, or the blue light of short-wave band are needed all to filter, and blue light is white
The indispensable part of light can seriously turn to be yellow without the entire color of blue light and is distorted, no matter from illumination or display industry all
It cannot be satisfied requirement of the human eye vision to color；And the sunlight harmless to human eye that everybody will readily appreciate that is also that there are each
The blue light of wave band, only the Energy distribution of each wave band is different, and the blue light of short-wave band is less；Therefore filter blue light will there are one
Degree is not required and all filters out, and target is as close possible to sunlight.
Just because of the limit that there is above-mentioned two aspect mistaken ideas and blue light absorption material self performance in this field for a long time
System causes to there is no the low blue light optical film of liquid crystal display that filter blue light effect is good and stability is high at present.
Utility model content
To solve the above problems, that the purpose of this utility model is to provide a kind of liquid crystal displays is thin with low blue light optical
Film.The low blue light optical film has filter blue light effect and light transmittance good, and the feature that stability is high.
The another object of the utility model is to provide a kind of low blue light diffusion sheet of liquid crystal display.
The further object of the utility model is to provide a kind of liquid crystal including the low blue light diffusion sheet of above-mentioned liquid crystal display
Display.
A kind of in order to achieve the above object, the utility model provides the low blue light optical film of liquid crystal display is described low
Blue light optical film includes：Substrate layer, functional layer and protective layer, the base material is placed between functional layer and protective layer, described
Containing at least one inorganic blue absorbent in functional layer and/or protective layer, and at least one organic blue-light absorbers or have
Machine inorganic hybrid blue light luminescent absorbent；The inorganic blue absorbent includes meta-aluminate or metastannic acid salt.
In recent years, technical staff has developed various organic blue-light absorbers, these blue lights based on organic matter are inhaled
Although receive agent has shown certain advantage, the actually poor problem of generally existing stability in terms of filtering blue light effect,
The high brightness long-term lighting irradiation environment of LED light source in display can not be adapted to, therefore, most of can be only applied to requires phase
To not high low blue light eyeglass industry.The relevant report also applied at present in field of display about organic blue-light absorbers,
But or these schemes are that there is no solve the problems, such as stability difference or be that can not take into account filter blue light effect and ensure bright
Degree.For example, the blue-light absorbers that certain low blue light flat-panel monitor scheme uses are metal network and (organic) dyestuff, but the program is real
There are following obvious shortcomings on border：Organic dyestuff quantity absorbs blue light effect unobvious less, if can substantially be influenced more than dosage bright
Degree；In addition metal network and dyestuff itself have light resistance difference feature, are illuminated by the light (working condition that display screen is lighted) meeting for a long time
It fades and fails, cause to filter the decaying of blue light effect obviously；Therefore, when it is applied to have very high want to filter blue light effect and letter patience
When the display industry asked, actual effect is unable to reach requirement at all.
Present utility model application people discovers how that it is liquid crystal display to take into account filter blue light effect, light transmittance and stability as a result,
The core technology problem that device needs to solve with low blue light optical film, in order to solve the problem, present utility model application people passes through
In-depth analysis to the problem is worked by a large amount of practical proofs, provides a kind of specific inorganic compound (hereinafter referred to as inorganic indigo plant
Light absorber) assembled scheme with blue-light absorbers based on organic matter.The mating reaction of the combination is embodied in：Meta-aluminic acid
Not only self stability is high for salt or metastannic acid salt inorganic blue absorbent, but also can be to ultra-short wave band high energy blue light
(380-450nm) is effectively absorbed, so both can be miscellaneous to organic blue-light absorbers, organic-inorganic to avoid ultra-short wave band blue light
The stability for changing blue-light absorbers impacts, and also significantly reduces organic blue-light absorbers, organic-inorganic hybrid blue light luminescent absorbs
The load of agent comprehensively regards influence to allow organic blue-light absorbers, organic-inorganic hybrid blue light luminescent absorbent to stablize
The blue light of the serious wave band of power carries out efficient absorption；In addition, this mode for distinguishing emphasis absorption region can be such that different blue lights inhale
The advantage for receiving agent is not fully exerted, so as to which dosage control in relatively low range, is not only improved cost control, and carry
The high light transmittance of film.As it can be seen that scheme provided by the utility model has given full play to specific inorganic matter and organic blue light absorption
Agent, organic-inorganic hybrid blue light luminescent absorbent synergistic function, provide a kind of tool for the low Blue-Ray technology of field of display
There is new departure of actual application value；The low blue light optical film that the program provides has filter blue light effect and light transmittance good, surely
Qualitative high comprehensive performance, can meet the performance requirement of field of display completely.In addition, in this programme to selected inorganic indigo plant
Light absorber, organic blue-light absorbers, organic-inorganic hybrid blue light luminescent absorbent type basic restriction under, each specific blue light is inhaled
It receives material and still there is certain difference to the absorption characteristic of different-waveband blue light, we can make full use of this difference, pass through
Matching combination to the blue light absorption material of different absorption characteristics and dosage adjustment can obtain the solution of different filter blue light ranks
Scheme.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the functional layer and protective layer are diffusion barrier
Functional layer and diffusion barrier protective layer.Further include resin, curing agent and particulate in diffusion barrier functional layer and diffusion barrier protective layer；Tree
Fat and curing agent form adhesive.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the meta-aluminate include meta-aluminic acid zinc or
Meta-aluminic acid is sowed；The metastannic acid salt includes zinc metastannate.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the substrate layer is polyester film, poly- carbonic acid
One kind in ester film, polyamide film, Kapton, polypropylene film, polyethylene film and polyvinyl chloride film etc.
Or it is several.It is further preferred that the substrate layer is the good and heat-resist base material of translucency, preferably optical grade polyester is thin
Film, thickness are preferably 36-250 μm.
In above-mentioned liquid crystal display in low blue light optical film, due to the larger blue light of eyesight influence mainly in 410-
480nm wave bands, therefore, preferably selection can preferably cover the organic blue-light absorbers for absorbing the wave band blue light or organic-inorganic is miscellaneous
Change blue-light absorbers.It is further preferred to select the relatively good organic blue-light absorbers of stability or organic inorganic hybridization blue as possible
Light absorber, and want to be used cooperatively with the inorganic blue absorbent.Studies have shown that the organic blue light absorption of triazole type
Agent, the organic blue-light absorbers of phenols, the organic blue-light absorbers of amine and nickel class organic-inorganic hybrid blue light luminescent absorbent not only from
Body stability is preferable, and has extraordinary mating reaction with meta-aluminic acid salt or metastannic acid salt inorganic blue absorbent.
In preferred embodiment provided by the utility model, organic blue-light absorbers include 2- (bis- (a, the a- bis- of 2- hydroxyls -3,5
Methylbenzyl) phenyl) benzotriazole, 2- (bis- (2,4- the 3,5-dimethylphenyls) -1,3,5- triazine -2- bases of 4,6-) -5- octyloxies phenol,
2- (2- hydroxyl -3- tertiary butyl -5- aminomethyl phenyls) -5- chlorobenzotriazoles, 2- (2 '--4 '-benzoxy phenyl of hydroxyl) -5 are chloro-
2H- benzotriazole, 2- (4,6- diphenyl -1,3,5- triazine -2- bases) -5- n-hexane oxygroup phenol or hexamethylphosphoramide.
The organic-inorganic hybrid blue light luminescent absorbent includes 2,2 '-thiobis to tert-octyl phenol extraction of nickel, 2,2 '-thiobis (uncles 4-
Octyl phenol oxygroup) nickel or 2,2 '-thiobis (4- tert-octyl phenols) n-butylamine nickel.
In above-mentioned liquid crystal display in low blue light optical film, the existing machine blue-light absorbers of present utility model application human hair
It is relatively good to filter blue light effect, but the opposite meeting of stability is more slightly worse；Although and organic-inorganic hybrid blue light luminescent absorbent filters blue light effect
More slightly worse than organic blue-light absorbers, still, stability is better；And often stability is best for inorganic blue absorbent, but filter
Blue light effect is poorer with respect to the above two outlines.Therefore, it when various blue-light absorbers are used cooperatively, can be selected according to reapective features
Suitable blue-light absorbers combination and usage ratio.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the inorganic blue absorbent is received for spherical shape
Rice corpuscles；Grain size is preferably 10-100nm, more preferably 40-60nm.So certifiable specific surface area；Be conducive to ensureing light transmission
Under the premise of property does not influence display brightness, corresponding blue light absorption efficiency is promoted as far as possible.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that by weight percentage, the inorganic blue
The content of absorbent is the 0.5%-10% of coating fluid in residing equivalent layer；The content of organic blue-light absorbers is residing phase
Answer the 0.5%-5% of coating fluid in layer；The content of the organic-inorganic hybrid blue light luminescent absorbent is coating fluid in residing equivalent layer
0.5%-5%.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that in the functional layer and/or protective layer at least
Containing a kind of inorganic blue absorbent, two kinds of organic blue-light absorbers or organic-inorganic hybrid blue light luminescent absorbent.By using general
Two or more to the blue light absorption effect of different-waveband can be complementary inorganic blue absorbent, organic blue light absorption
The mode that agent, organic-inorganic hybrid blue light luminescent absorbent are combined can comprehensively and effectively absorb harmful blue light.Which
Certain single blue-light absorbers can be given full play to some wave band good absorption effect and the good feature of stability, made by combination
With stability, light transmittance and the filter blue light effect that can further improve low blue light optical film.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the inorganic blue absorbent, organic blue light
The distribution mode of absorbent, organic-inorganic hybrid blue light luminescent absorbent in functional layer and/or protective layer is：
Contain inorganic blue absorbent in protective layer, contains organic blue-light absorbers and organic inorganic hybridization indigo plant in functional layer
Light absorber；Alternatively,
Contain inorganic blue absorbent and organic-inorganic hybrid blue light luminescent absorbent in functional layer；Alternatively,
Contain inorganic blue absorbent in protective layer, contains organic-inorganic hybrid blue light luminescent absorbent in functional layer；Alternatively,
Contain inorganic blue absorbent in protective layer, contains organic blue-light absorbers in functional layer；Alternatively,
Contain inorganic blue absorbent, organic-inorganic hybrid blue light luminescent absorbent and organic blue-light absorbers in functional layer；Or
Person,
Contain inorganic blue absorbent and organic-inorganic hybrid blue light luminescent absorbent in protective layer, contains organic indigo plant in functional layer
Light absorber.
In preferred embodiment provided by the utility model, a kind of inorganic blue absorbent is contained in the protective layer,
Contain a kind of organic blue-light absorbers and a kind of organic-inorganic hybrid blue light luminescent absorbent in functional layer；Alternatively,
Contain a kind of inorganic blue absorbent and two kinds of organic-inorganic hybrid blue light luminescent absorbents in the functional layer；Alternatively,
Contain a kind of inorganic blue absorbent in the protective layer, is inhaled containing a kind of organic-inorganic hybrid blue light luminescent in functional layer
Receive agent；Alternatively,
Contain a kind of inorganic blue absorbent in the protective layer, containing there are two types of organic blue-light absorbers in functional layer；Or
Person,
It is inhaled containing a kind of or more organic blue-light absorbers, one kind and the above organic-inorganic hybrid blue light luminescent in the functional layer
Receive agent and a kind of inorganic blue absorbent；Alternatively,
It is inhaled containing a kind of and above inorganic blue absorbent, one kind and the above organic-inorganic hybrid blue light luminescent in the protective layer
Agent is received, contains a kind of or more organic blue-light absorbers in the functional layer.
In specific implementation, it can be determined according to the desirability of filter blue light and the design requirement of display.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that containing organic blue-light absorbers or
Light stabilizer is also added in the equivalent layer of organic-inorganic hybrid blue light luminescent absorbent.After light stabilizer further can promote illumination
The stability of organic blue-light absorbers, organic-inorganic hybrid blue light luminescent absorbent.Preferably, the light stabilizer include it is bis- (1,2,
2,6,6,-pentamethyl -4- piperidyl) the two piperidines acid esters of-last of the ten Heavenly stems, ethoxy tetramethylpiperidinol, 2- (2H- benzotriazole -2- bases) -
6- (dodecyl) -4- methylphenols or rutile type nano titanic oxide.It is further preferred that by weight percentage, institute
The content for stating light stabilizer is the 0.5-5% of coating fluid in residing equivalent layer.
In above-mentioned liquid crystal display in low blue light optical film, selected blue-light absorbers preferably to 480nm and with
Upper visible light does not absorb substantially.When it is implemented, ratio, concentration that can be by adjusting each blue-light absorbers, control each wave band
The effect of blue light absorption.
In above-mentioned liquid crystal display in low blue light optical film, it is preferable that the thickness of the protective layer is 5-10 μm；Institute
The thickness for stating functional layer is 10-25 μm；The thickness of the substrate layer is 36-250 μm.It, can also be by adjusting in practical application
Coating layer thickness containing blue-light absorbers increases the ratio for reducing and absorbing blue light.
The utility model additionally provides a kind of low blue light diffusion sheet of liquid crystal display, and the low blue light diffusion sheet is above-mentioned
Liquid crystal display in low blue light optical film functional layer and protective layer be diffusion barrier functional layer and diffusion barrier protective layer when
A kind of film；Further include resin, curing agent in the diffusion barrier functional layer and diffusion barrier protective layer in the low blue light diffusion sheet
And particulate.Wherein, resin and curing agent form adhesive.
In above-mentioned liquid crystal display in low blue light diffusion sheet, it is preferable that the resin include polyacrylate resin or
Polyurethane acrylate resin；The curing agent includes polyurethanes curing agent or isocyanate curing agent；The particle attached bag
Include one kind in acrylic resin, acrylonitrile resin, polyurethane, polyvinyl chloride, polystyrene, polyacrylonitrile and polyimides or
Several combinations；The particulate is preferably polymethyl methacrylate or polybutyl methacrylate；The grain of the particulate
Diameter is preferably 3-20 μm.
The utility model additionally provides a kind of above-mentioned liquid crystal display preparation method of low blue light diffusion sheet, this method packet
Include following steps (detailed process is shown in Fig. 5)：
(1) protective layer coating coating fluid and functional layer coating coating fluid are prepared respectively；
(2) then substrate layer coated on one side functional layer, after drying, winding；Another side coat protective layer, after drying,
Winding (coating apparatus that Fig. 8 descriptions can be used)；
(3) again through curing, cooling, cut, cut operation in blocks, the low blue light diffusion sheet is made.
In above-mentioned liquid crystal display in the preparation method of low blue light diffusion sheet, it is preferable that applied preparing the protective layer
Layer coating fluid or when functional layer coating coating fluid is to including that various indigo plants are added in the organic solvent of particulate and resin one by one
Light absorber, light stabilizer need to stir 5-30 minutes after a kind of substance of addition and add another substance again.
It includes liquid crystal display of the above-mentioned liquid crystal display with low blue light diffusion sheet that the utility model, which additionally provides a kind of,.
Preferably, the diffusion sheet of the backlight module in liquid crystal display is made of the low blue light optical film.
Scheme provided by the utility model can meet field of display to filter blue light effect, light transmittance (display brightness)
With the composite request of stability.And operability is strong, has prodigious actual application value.Specific effect is as follows：
1, the part that can remove the short-wave band blue light for having injury in LED light source to human eye, reaches various filter blue light demands
Healthy display devices requirement；
2, display brightness keeps the energy saving highlighted advantage of LED light source without being substantially reduced；
3, there are long-time stability.
Description of the drawings
Fig. 1 is sunlight relative spectral figure；
Fig. 2 is LED light source relative spectral figure；
Fig. 3 is the structural schematic diagram of low blue light diffusion sheet in embodiment 1
Fig. 4 is the partial enlarged view of low blue light diffusion sheet in embodiment 1；
Fig. 5 is the process flow chart of low blue light diffusion sheet in embodiment 1；
Fig. 6 is the transmitance comparison spectrogram of a kind of existing diaphragm scheme and common product (no filter blue light function)；
Fig. 7 is the transmitance comparison light of low blue light diffusion sheet made from embodiment 1 and common product (no filter blue light function)
Spectrogram；
Fig. 8 is the coating apparatus figure that embodiment 1 uses；
Fig. 9 is the back light module unit structure schematic diagram in embodiment 1.
21 be substrate layer, and 22 be functional layer, and 22a is that particulate, the 22b in functional layer are blue light absorption in functional layer
Agent, 22c are the adhesive in functional layer, and 23 be protective layer, and 23a is that particulate, the 23b in protective layer are blue light in protective layer
Absorbent, 23c are the adhesive in protective layer, and 30 be unreeling material, and 40 be winding material, and 50 be diffusion coating module, and 60 be drying
Module, 70 be UV cured module, and 41,42,51 and 52 be transfer roller.
Specific implementation mode
In order to which the technical characteristics of the utility model, purpose and advantageous effect are more clearly understood, now to this practicality
Novel technical solution carry out it is described further below, but should not be understood as to the utility model can practical range restriction.
Embodiment 1
Present embodiments providing a kind of liquid crystal display, (structural schematic diagram is shown in Fig. 3, partial enlarged view with low blue light diffusion sheet
See Fig. 4), the low blue light diffusion sheet by substrate layer 21, functional layer 22 (diffusion barrier functional layer) and protective layer 23, (protect by diffusion barrier
Layer) composition, wherein in functional layer 22 containing particulate 22a, blue-light absorbers 22b (stain in figure) and adhesive 22c (by
Resin and curing agent are formed) etc.；Contain particulate 23a, blue-light absorbers 23b (stain in figure) and adhesive in protective layer 23
23c (being formed by resin and curing agent) etc..In the present embodiment, particulate 22a in protective layer 23 (back layer namely incidence surface)
Maximum particle diameter be 8 μm, the maximum particle diameter of particulate 23a is 25 μm in functional layer 22 (positive layer namely light-emitting surface).
The preparation process of the low blue light diffusion sheet is (flow is shown in Fig. 5)：
(1) protective layer coating solution and functional layer coating solution are prepared respectively；
(2) then substrate layer coated on one side functional layer (coating apparatus is shown in Fig. 8, including unreeling material 30, winding material 40,
Multiple transfer rollers (4l, 42,5l and 52), diffusion coating module 50, irradiation modules 60 and UV cured module 70), after drying,
Winding；Another side coat protective layer (equipment congenerous layer), after drying, winding；
(3) again through curing, cooling, cut, cut operation in blocks, the low blue light diffusion sheet is made.
Wherein, the raw material for preparing above-mentioned functional layer coating solution includes：
The specific preparation process of above-mentioned functional layer coating coating fluid is：
(1) organic solvent is added in barrel；
(2) match in liquid and PMMA particulates stirring 30 minutes is added；
(3) match in liquid and polyacrylate resin stirring 30 minutes is added；
(4) match in liquid and sequentially add various blue-light absorbers and light stabilizer, each stirring adds another in 10 minutes again；
(5) match in liquid and isocyanate curing agent stirring 10 minutes is added；
(6) go out liquid tested viscosity, solid content, appearance, record each item data.
Wherein, the raw material for preparing above-mentioned protective layer coating solution includes：
The specific preparation process of above-mentioned protective layer coating coating fluid is：
(1) organic solvent is added in barrel；
(2) match in liquid and PBMA particulates stirring 30 minutes is added；
(3) match in liquid and polyacrylate resin stirring 30 minutes is added；
(4) match in liquid and meta-aluminic acid zinc stirring 10 minutes is added；
(5) match in liquid and isocyanate curing agent stirring 10 minutes is added；
(6) go out liquid tested viscosity, solid content, appearance, record each item data.
Following test is carried out to above-mentioned low blue light diffusion sheet, test result charges to table 1：
(1) low blue light diffusion sheet (protection laminated close to light guide plate or the light-emitting surface of diffuser plate) is put into backlight module
And lid liquid crystal display tests the brightness of each scheme, full spectroscopic data according to industry standard methods CS2000 instruments：
Backlight type：DLED (containing diffuser plate) or ELED (containing light guide plate)；
Membrane probing framework (more than diffuser plate or light guide plate light-emitting surface, from bottom to top)：Low blue light optical diffusion sheet+
Prismatic lens combination (or prismatic lens and diffusion sheet combination).Fig. 9 is the structural schematic diagram of one of which ELED backlight modules, including
Upper diffusion barrier, 90 ° of prism film, 0 ° of prism film, low blue light diffusion barrier (piece), light guide plate, LED (lamp bead) and reflectance coating.
Note：DLED refers to that downward back light type, ELED refer to side entrance back type.
Then and the diaphragm contrast test blue light absorption rate of non-lighting (2) RA is tested, composition module lighting 240 hours, is seen
Data variation ratio.
1 low blue light diffusion sheet test result of table
Note：1, blue light absorption rate：Within the scope of 420-460nm, at the center of the complete white field picture of related display 100%
Point, the diaphragm (low blue light diffusion sheet) of embodiment and common diaphragm (no filter blue light function) respectively the same display (only more
Change diaphragm) interior spectroanalysis instrument (such as CS2000) tests the sum of the spectral radiance (absolute power level) of every 1 nm, it calculates real
Apply the ratio data of the data of example and the data of common diaphragm；Embodiment filters blue light ratio：The data of 1- embodiments/common
The data of diaphragm；
2, brightness reduced rate：In the complete white field picture of related display 100%, it is added after the diaphragm of embodiment and normal film
Piece (no filter blue light function) is in the same diaphragm framework (only replacing diaphragm) of the same display, and test brightness data, bright respectively
Spending reduced rate is：The data of the data of 1- embodiments/common diaphragm；Brightness measurement method：In SJ/T11292-2016
5.6.2；
3, blue light ratio reduced rate is filtered after RA, room temperature lighting 240 hours, embodiment lighting diaphragm and non-lighting diaphragm are same
Blue light absorption rate (specifically participating in above-mentioned 1st) is compared in one display, filter blue light ratio reduced rate is after RA：1- lightings
The blue light absorption rate of blue light absorption rate afterwards/non-lighting；
4, comparative example scheme be using the dominant wavelength of blue chip in LED lamp bead to be adjusted to the scheme of 460nm, then and
Conventional display contrast test data equipped with normal LED lamp bead (blue chip dominant wavelength is 450nm), method is with reference to above-mentioned 1-
3.
In addition, carrying out existing diaphragm scheme (blue-light absorbers of class containing organic dyestuff) under the conditions of with 1 note of upper table the 3rd
RA tests common product (no filter blue light function) comparison light transmittance then and in the market, obtained light transmittance curve is shown in Fig. 6
(since the program is not used to display, the sample taken is unable to reach the state that can be tested in display, therefore can only lead to
Test light transmittance curve is crossed to compare)；To made from the present embodiment low blue light diffusion sheet (the utility model product) carry out with
The common product (no filter blue light function) of RA tests then and in the market under the conditions of 1 note of upper table the 3rd compares light transmittance, obtains
Light transmittance curve see Fig. 7.By Fig. 6 and Fig. 7 it is found that the low blue light diffusion piece performance in the present embodiment is significantly better than existing film
Piece scheme can not only carry out the harmful blue light of specific band efficiently comprehensive absorption, but also stability is high.
Embodiment 2
A kind of low blue light diffusion sheet of liquid crystal display is present embodiments provided, which (is expanded by functional layer
Dissipate film functional layer), substrate layer and protective layer (diffusion barrier protective layer) composition.
The preparation method and embodiment 1 of low blue light diffusion sheet are identical；Functional layer coating coating fluid and protective layer coating apply
The preparation method of cloth liquid is similar with embodiment 1, difference lies in used blue-light absorbers and dosage are different, specifically such as
Under：
The raw material of functional layer coating coating fluid includes：
The raw material of protective layer coating coating fluid includes：
Test identical with 1 product of embodiment is carried out to above-mentioned low blue light diffusion sheet, test result charges to table 1.
Embodiment 3
A kind of low blue light diffusion sheet of liquid crystal display is present embodiments provided, which (is expanded by functional layer
Dissipate film functional layer), substrate layer and protective layer (diffusion barrier protective layer) composition.
The preparation method and embodiment 1 of low blue light diffusion sheet are identical；Functional layer coating coating fluid and protective layer coating apply
The preparation method of cloth liquid is similar with embodiment 1, difference lies in used blue-light absorbers and dosage are different, specifically such as
Under：
The raw material of functional layer coating solution includes：
The raw material of protective layer coating solution includes：
Test identical with 1 product of embodiment is carried out to above-mentioned low blue light diffusion sheet, test result charges to table 1.
Embodiment 4
A kind of low blue light diffusion sheet of liquid crystal display is present embodiments provided, which (is expanded by functional layer
Dissipate film functional layer), substrate layer and protective layer (diffusion barrier protective layer) composition.
The preparation method and embodiment 1 of low blue light diffusion sheet are identical；Functional layer coating coating fluid and protective layer coating apply
The preparation method of cloth liquid is similar with embodiment 1, difference lies in used blue-light absorbers and dosage are different, specifically such as
Under：
The raw material of functional layer coating solution includes：
The raw material of protective layer coating solution includes：
Test identical with 1 product of embodiment is carried out to above-mentioned low blue light diffusion sheet, test result charges to table 1.
Claims (3)
1. a kind of low blue light optical film of liquid crystal display, which is characterized in that the low blue light optical film includes：
Substrate layer, functional layer and protective layer, the base material are placed between functional layer and protective layer；
The protective layer is the protective layer containing inorganic blue absorbent, and the functional layer is containing organic blue-light absorbers and to have
The functional layer of machine inorganic hybrid blue light luminescent absorbent；Alternatively,
The protective layer is the protective layer containing inorganic blue absorbent, and the functional layer is to be inhaled containing organic-inorganic hybrid blue light luminescent
Receive the functional layer of agent；Alternatively,
The protective layer is the protective layer containing inorganic blue absorbent, and the functional layer is the work(containing organic blue-light absorbers
Ergosphere.
2. a kind of low blue light diffusion sheet of liquid crystal display, which is characterized in that the low blue light diffusion sheet is described in claim 1
Liquid crystal display in low blue light optical film functional layer and protective layer be diffusion barrier functional layer and diffusion barrier protective layer when
A kind of film；Further include resin, solidification in the low blue light diffusion sheet, in the diffusion barrier functional layer and diffusion barrier protective layer
Agent and particulate；
The resin includes polyacrylate resin or polyurethane acrylate resin；
The curing agent includes polyurethanes curing agent or isocyanate curing agent；
The particulate includes acrylic resin, acrylonitrile resin, polyurethane, polyvinyl chloride, polystyrene, polyacrylonitrile or poly-
The combination of one or more of acid imide.
3. a kind of includes the liquid crystal display of the low blue light diffusion sheet of liquid crystal display described in claim 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017213014586 | 2017-09-30 | ||
| CN201721301458 | 2017-09-30 |
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| CN207780296U true CN207780296U (en) | 2018-08-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776837A (en) * | 2018-12-18 | 2019-05-21 | 合肥乐凯科技产业有限公司 | A kind of anti-blue light protective film |
| CN112539922A (en) * | 2020-12-08 | 2021-03-23 | Oppo广东移动通信有限公司 | Head-mounted display device, blue light testing system and blue light testing method |
| CN115785733A (en) * | 2022-11-17 | 2023-03-14 | 怀化天马隆旭印务有限公司 | Water-based acrylate ink composition and preparation method and application thereof |
-
2017
- 2017-10-12 CN CN201721313577.3U patent/CN207780296U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776837A (en) * | 2018-12-18 | 2019-05-21 | 合肥乐凯科技产业有限公司 | A kind of anti-blue light protective film |
| CN109776837B (en) * | 2018-12-18 | 2021-07-06 | 合肥乐凯科技产业有限公司 | Prevent blue light protection film |
| CN112539922A (en) * | 2020-12-08 | 2021-03-23 | Oppo广东移动通信有限公司 | Head-mounted display device, blue light testing system and blue light testing method |
| CN112539922B (en) * | 2020-12-08 | 2023-12-05 | Oppo广东移动通信有限公司 | Head-mounted display device, blue light testing system and blue light testing method |
| CN115785733A (en) * | 2022-11-17 | 2023-03-14 | 怀化天马隆旭印务有限公司 | Water-based acrylate ink composition and preparation method and application thereof |
| CN115785733B (en) * | 2022-11-17 | 2023-10-31 | 怀化天马隆旭印务有限公司 | Water-based acrylic ester ink composition and preparation method and application thereof |
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Address after: No. 196 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee after: Kaixinsen (Shanghai) functional film industry Co.,Ltd. Address before: No. 188 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee before: CCS (SHANGHAI) FUNCTIONAL FILMS INDUSTRY Co.,Ltd. |
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