CN101042488A - Light scattering diaphragm and manufacturing method therefore, and back light module unit using same and display apparatus - Google Patents
Light scattering diaphragm and manufacturing method therefore, and back light module unit using same and display apparatus Download PDFInfo
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- CN101042488A CN101042488A CN 200610067658 CN200610067658A CN101042488A CN 101042488 A CN101042488 A CN 101042488A CN 200610067658 CN200610067658 CN 200610067658 CN 200610067658 A CN200610067658 A CN 200610067658A CN 101042488 A CN101042488 A CN 101042488A
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Abstract
This invention relates to light diffusion film for down straight and imbed aphototropism module set, wherein, the aphototropism set is set with several light sources; the film comprises the following parts: one base materials layer with two relative surfaces; one diffusion layer formed on its surface; one anti-static electricity adhesive layer with one top and down surfaces formed on other surface of the base materials layer with its down surface set with several light paths adjust units; the lights enter the adhesive layer through adjust unit to reflect the lights into the layer then sent out through base materials layer.
Description
[technical field]
The invention relates to a kind of light scattering diaphragm and method for making thereof and the display device of using this light scattering diaphragm, particularly about being used for for example straight-down negative of the flat-panel screens of LCD and the light scattering diaphragm and the method for making thereof of embedded module backlight.
[background technology]
In recent years, in field of display, gradually with flat-panel screens (FlatPanel Display, FPD) replace the big and heavy cathode ray tube (CRT) display of traditional volume, and wherein power consumption is little to have, (Liquid Crystal Display LCD) is the market mainstream to the LCD of full-colorization, frivolous, advantage such as be easy to carry.Generally be the module backlight (Backlight Module) that has light source (LightSource) in liquid crystal panel rear additional configuration one, to solve the non-luminous problem of liquid crystal itself.The light that module backlight the sends light source liquid crystal panel that leads uniformly, light is shown in image on the LCD after seeing through liquid crystal panel, and is able to information is sent to user/beholder's eyes.
" side-light type (EdgeLighting) " can be divided in the position according to light source of known module backlight, " straight-down negative (Direct-in Lighting) " and " embedded (Embedded Lighting) ", side-light type is that light source is placed side, it has gently, thin, narrow, characteristics such as low power consumption, be particularly suitable for being applied in mobile phone, PDA(Personal Digital Assistant), in the notebook computer, yet, because the restriction of its light guide plate, make that the quantity of light source that is positioned over side is limited, in the LCD of large-size, can't provide enough light sources, so generally only be used for 18 o'clock following small-medium size modules backlight; Straight-down negative and embedded then several light sources are directly placed liquid crystal panel under, light is upwards penetrated by the front, though its required space is bigger, weight is also heavier, but because enough light sources can be set, high briliancy, visual angle are good, the utilization ratio advantages of higher of light and have, so generally be to be used in large scale module backlight, are applicable to LCD monitor and LCD TV etc.
Fig. 1 shows known down straight aphototropism mode set, it disposes from the bottom to top in regular turn: reflector plate (Reflection Sheet) 2, several light sources 3, light guide plate (LightGuide Plate) 4, diffusion sheet 1 and brightening piece (Brightness Enhanced Film) 5, this module combines with reflecting polarized wafer 6 and liquid crystal panel 7 and promptly forms LCD.In this module backlight, light source 3 can be the fluorescent tube of vertical bar shape or U type or other continuous bending shape, and arranges setting with proper spacing.Light is penetrated by light source 3, by the guiding raising briliancy of light guide plate 4, injects diffusion sheet 1 again, by diffusion particle generation refraction, scattering process wherein, so that light is evenly spread; Afterwards, utilize the brightening piece 5 that is generally prism (prism) structure to revise the direct of travel of light again, light is condensed with reflection with the refraction of light and improve positive briliancy; At last, light enter liquid crystal panel 7 before, further utilize reflecting polarized wafer 6 to improve front and brightness with great visual angle.2 of reflector plates that are arranged on below are by the light that will reflex to the bottom through diffusion sheet 1 reflected back diffusion sheet 1 once again, and are promoted the service efficiency to light source 3.
Fig. 3 shows known module embedded backlight, and it disposes from the bottom to top in regular turn: reflector plate 2, the plane tabula rasa 8 that contains several light sources 82 and diffusion sheet 1, this module combine with reflecting polarized wafer 6 and liquid crystal panel 7 and promptly form LCD.In this module backlight, light source 82 can be vertical bar shape or the light emitting diode (LED) of point-like configuration or the light source of other shape, and it is placed in the supporter 81, and supporter 81 can be glass or acrylic plate.Light is penetrated by light source 82, directly injects diffusion sheet 1, by diffusion particle generation refraction, scattering process wherein, so that light is evenly spread; Because this illumination mode belongs to direct bright dipping, positive briliancy will greatly improve; At last, light enter liquid crystal panel 7 before, further utilize reflecting polarized wafer 6 to improve front and brightness with great visual angle.2 of reflector plates that are arranged on below are by the light that will reflex to the bottom through diffusion sheet 1 reflected back diffusion sheet 1 once again, and are promoted the service efficiency to light source.
Yet, in straight-down negative and embedded module backlight according to above-mentioned configuration, liquid crystal panel 7 be right against light source 3,82 directly over locate and can higher briliancy be arranged because of the direct bright dipping of light source 3,82, liquid crystal panel 7 is in that to be positioned at the briliancy of locating above between each light source 3,82 then darker.This kind is to be shown in Fig. 2 because of light source disposes the briliancy difference that causes and then makes the situation that the light and shade band is arranged on the liquid crystal panel 7.
At present the settling mode to this problem mainly contains two kinds: be example with Fig. 1, even one for elongate light source 3 and light guide plate 4 diffusion sheets 1 between distance, to reduce this kind light and shade zoning; Yet, in case after light source 3 zooms out with other assembly distance, except that briliancy promptly with decay, the integral thickness of module backlight also with increase, and these two kinds of problems of deriving are all violated the requirement to module backlight is light, thin, light utilization efficiency is high.
Another kind of mode then is design groove or other various lines on light guide plate 4, or gives up light guide plate 4, and directly adds the fluorescent substance of Density Distribution inequality at diffusion sheet 1, lowers above-mentioned light and shade zoning in the hope of seeing through scattering of light; But these two kinds of methods all are difficult for reaching because of the complicated of processing procedure, even technical feasible, the cost of its increase is also considerable, can't implement on volume production.
Therefore, in the down straight aphototropism mode set field, need find out a solution to above-mentioned light and shade band problem not reducing optical property (as briliancy, brightness etc.), not increasing module thickness and can significantly not increase under the prerequisite of cost.The present invention promptly satisfies this demand.
[summary of the invention]
A purpose of the present invention is for providing a kind of light scattering diaphragm that is used for module backlight, have effects such as reflection, scattering, diffusion, light harvesting, mixed light, make and evenly to disperse by straight-down negative or the emitted light of embedded module backlight, be unlikely to the position to be set and on liquid crystal panel, to form the light and shade band, thereby improve the bright dipping briliancy with respect to light source.
Another object of the present invention is for providing a kind of method for making that is used for the light scattering diaphragm of module backlight, above-mentioned light scattering diaphragm has effects such as reflection, scattering, diffusion, light harvesting, mixed light, this method for making can be easy to import in the manufacturing process of present use, have excellent compatibility, can not cause burden extra on the manufacturing cost.
Another purpose of the present invention uses above-mentioned module backlight with light scattering diaphragm of effects such as reflection, scattering, diffusion, light harvesting, mixed light to reach the display device that forms in view of the above for providing a kind of, this module backlight is because adopt above-mentioned light scattering diaphragm, and be able under the situation that does not increase module volume and cost, have good bright dipping briliancy and uniformity coefficient, thereby make the preferable display effect of display device tool that forms in view of the above.
According to the light scattering diaphragm that is used for module backlight of the present invention, this module backlight is provided with at least one light source, it is characterized in that: this light scattering diaphragm includes:
One substrate layer has two relative surfaces;
One diffusion layer, it is to be formed on the one side of this substrate layer; And
One antistatic anti-adhesive coating, it has first surface and second surface, and this first surface is to be formed on another opposite face of this substrate layer, and second surface has at least one light path adjustment unit, the setting of this light path adjustment unit is the setting that is relevant to this at least one light source
By this, the light of this at least one light source directly enters this antistatic anti-adhesive coating or via entering this antistatic anti-adhesive coating again behind this at least one light path adjustment unit adjustment path, outwards penetrates via this substrate layer and diffusion layer more afterwards.
According to a kind of aforementioned method for making that is used for the light scattering diaphragm of straight-down negative and embedded module backlight of the present invention, its step includes: provide one to use transparent or semitransparent layer of substrate layer as; Form the antistatic anti-adhesive coating that a diffusion layer and has first surface and second surface respectively on the two relative surfaces of this transparent or semitransparent layer, the first surface of this antistatic anti-adhesive coating is to engage with this transparent or semitransparent layer; And form at least one light path adjustment unit in the second surface of this antistatic anti-adhesive coating.
According to another aspect of the present invention, a kind of module backlight, it is to use aforementioned lights scattering diaphragm.
According to an aspect more of the present invention, a kind of display device, it is provided with the module backlight that uses aforementioned lights scattering diaphragm.
A kind of light scattering diaphragm that is used for module backlight of the present invention, have effects such as reflection, scattering, diffusion, light harvesting, mixed light, make and evenly to disperse by straight-down negative or the emitted light of embedded module backlight, be unlikely to the position to be set and on liquid crystal panel, to form the light and shade band, thereby improve the bright dipping briliancy with respect to light source.
The method for making that is used for the light scattering diaphragm of module backlight of the present invention, this method for making can be easy to import in the manufacturing process of present use, has excellent compatibility, can not cause burden extra on the manufacturing cost.
The above-mentioned module backlight with light scattering diaphragm of effects such as reflection, scattering, diffusion, light harvesting, mixed light of use of the present invention reaches the display device that forms in view of the above, this module backlight is because adopt above-mentioned light scattering diaphragm, and be able under the situation that does not increase module volume and cost, have good bright dipping briliancy and uniformity coefficient, thereby make the preferable display effect of display device tool that forms in view of the above.
[description of drawings]
In all are graphic, use same label to indicate identical or similar feature.These graphic proportionally draftings, and it only is for the usefulness that demonstrates purpose.
Fig. 1 is the schematic configuration diagram of known down straight aphototropism mode set.
Fig. 2 is a coordinate diagram for light source relative position and the exiting surface brightness pass of Fig. 1.
Fig. 3 is the schematic configuration diagram of known embedded module backlight.
Fig. 4 is the schematic configuration diagram according to the light scattering diaphragm of one embodiment of the invention.
Fig. 5 is the constructed profile according to the set light path adjustment unit of the light scattering diaphragm of one embodiment of the invention.
Fig. 6 is the schematic configuration diagram of use according to the down straight aphototropism mode set of the light scattering diaphragm of one embodiment of the invention.
Fig. 7 is the schematic configuration diagram of use according to the embedded module backlight of the light scattering diaphragm of one embodiment of the invention.
[embodiment]
The light scattering diaphragm that is used for straight-down negative and embedded module backlight of the present invention mainly comprises a substrate layer, a diffusion layer and an antistatic anti-adhesive coating, this diffusion layer is formed on the one side of this substrate layer, one surface of this antistatic anti-adhesive coating is formed on the another side of this substrate layer, another surface of this antistatic anti-adhesive coating then has at least one light path adjustment unit, and it is provided with mainly is setting corresponding to employed at least one light source of module backlight.In the running, the light that at least one light source in the module penetrates can directly enter antistatic anti-adhesive coating, or enters antistatic anti-adhesive coating via the light path adjustment unit again after with the part light scatter, penetrate via substrate layer and diffusion layer more afterwards, make the light that penetrates evenly to disperse.
This substrate layer can be by comprising but the high molecular film material that is not limited only to polyethylene terephthalate (PET) form; This diffusion layer can be by comprising but is not limited only to polyphenyl butyl methacrylate macromolecule resin materials such as (PMBA) and forms, and can produce careful surfaceness and uniform light diffusion effect is provided, and have light harvesting function (promptly improving the optics briliancy); This antistatic anti-adhesive coating can be by comprising but is not limited only to polymethylmethacrylate macromolecule resin materials such as (PMMA) and forms, and can avoid the dirt adhesion in the module assembling process; This light path adjustment unit can be the printing net-point that forms including but not limited to by uvioresistant printing ink.
See also Fig. 4, it discloses an a kind of preferred embodiment that is used for the light scattering diaphragm 1 ' of module backlight of the present invention, this light scattering diaphragm 1 ' includes a substrate layer 10, a diffusion layer 11 and an antistatic anti-adhesive coating 12, this diffusion layer 11 is to be formed on the one side of this substrate layer 10, and this antistatic anti-adhesive coating 12 then is formed on the another side of this substrate layer 10.These antistatic anti-adhesive coating 12 upper surfaces engage with this substrate layer 10, and lower surface then has several light path adjustment units 123.
In this embodiment, the material of substrate layer 10 can be transparent or semitransparent resin molding, and it is preferably and is selected from polyethylene terephthalate (PET), cellulose triacetate (TAC), poly-naphthoic acid second diester (PEN), poly-propylene diester, polyimide, polyethers, polycarbonate, polyamine, tygon, polypropylene or polyvinyl alcohol (PVA) or the like or its equivalent.This thickness of resin film is preferably 25 to 300 microns (μ m), is more preferred from 50 to 200 microns.
The material of adhesion 111 can be hot plastic type macromolecule resin, and it is preferably independent or condensate, polyester (polyester), polycarbonate (polycarbonate), polystyrene (polystyrene) or polymethylpentene (polymethyl pentene) or the like or its equivalent that is selected from (methyl) acrylate ((meth) acrylate).And wherein should (methyl) acrylate separately or condensate be preferably and be selected from poly-(methyl) methyl acrylate (polymethyl (meth) acrylate) or poly-(methyl) ethyl acrylate (polyethyl (meth) acrylate) etc., this polyester is preferably tygon terephthaldehyde ester (polyethylene terephthalate) or polypropylene terephthaldehyde ester (polypropyrene terephthalates) etc.The ratio of the percentage by weight (weight%) of adhesion 111 in this diffusion layer 11 can be 10 percentage by weight to 90 percentage by weights, is preferably 40 percentage by weight to 80 percentage by weights.
Organic printing opacity scattering particle 112 be preferably be selected from polymethylmethacrylate (PMMA), polyphenyl butyl methacrylate (polymethoxy benzyl acetate, PMBA) or Polyvinylchloride (PVC) or the like or its equivalent.The ratio of the percentage by weight of organic printing opacity scattering particle 112 in diffusion layer 11 can be 10 percentage by weight to 90 percentage by weights, is preferably 40 percentage by weight to 80 percentage by weights.
Inorganic fine particle 113 is preferably and is selected from SiO
2, Al
2O
3Or silica gel (silicon) or the like or its equivalent.The ratio of the percentage by weight of inorganic fine particle 113 in diffusion layer 11 can be 30 percentage by weight to 90 percentage by weights, is preferably 40 percentage by weight to 90 percentage by weights.
In the present embodiment, adhesion 111 can be that 10 percentage by weight to 30 percentage by weights, tygon terephthaldehyde ester are formed by 10 percentage by weight to 30 percentage by weights with respect to diffusion layer 11 with respect to diffusion layer 11 by poly-(methyl) methyl acrylate; Organic printing opacity scattering particle 112 can be that 15 percentage by weight to 40 percentage by weights, PMBA are formed by 10 percentage by weight to 30 percentage by weights with respect to diffusion layer 11 with respect to diffusion layer 11 by PMMA; Inorganic fine particle 113 can be by SiO
2With respect to diffusion layer 11 is that 10 percentage by weight to 40 percentage by weights, silica gel are formed by 10 percentage by weight to 30 percentage by weights with respect to diffusion layer 11.The thickness range of diffusion layer 11 is preferably 15 to 40 microns.
The structure of antistatic anti-adhesive coating 12 and diffusion layer 11 are approximate basically, and it comprises several diffusion particles of mainly being made up of organic printing opacity scattering particle 122, and comprises adhesion 121, and these several diffusion particles are anchored on the substrate layer 10.Difference is in the thickness of the ratio of diffusion particle and adhesion, antistatic anti-adhesive coating 12 and the light path adjustment unit 123 on antistatic anti-adhesive coating 12 lower surfaces, and antistatic anti-adhesive coating 12 is to form the surface that the diffusion particle that makes wherein protrudes from adhesion 121, when thereby antistatic anti-adhesive coating 12 contacts with other assembly, only form contact in the diffusion particle place of protruding, other parts then can form the gap, so can reach antistatic anti-adhesion purpose.
In antistatic anti-adhesive coating 12, the ratio of the percentage by weight of adhesion 121 (weight%) can be 60 percentage by weight to 95 percentage by weights, be preferably 70 percentage by weight to 90 percentage by weights, the ratio of the percentage by weight of organic printing opacity scattering particle 122 can be 5 percentage by weight to 40 percentage by weights, is preferably 10 percentage by weight to 30 percentage by weights.
In the present embodiment, adhesion 121 can be that 10 percentage by weight to 70 percentage by weights, tygon terephthaldehyde ester are formed by 10 percentage by weight to 50 percentage by weights with respect to antistatic anti-adhesive coating 12 with respect to antistatic anti-adhesive coating 12 by poly-(methyl) methyl acrylate; Organic printing opacity scattering particle 122 can be made up of by 10 percentage by weight to 30 percentage by weights with respect to antistatic anti-adhesive coating 12 PMMA.The thickness range of antistatic anti-adhesive coating 12 is preferably 10 to 25 microns.
Light path adjustment unit 123 mainly is to distribute and be arranged on the lower surface of antistatic anti-adhesive coating 12 corresponding to the light source space of module backlight.This space distribution is to get for the light source configuration according to the module backlight that uses this light scattering diaphragm 1 ', with the down straight aphototropism mode set is example (ginseng Fig. 1), can be earlier with light source 3 with appropriate intervals be arranged in reflector plate 2 and light guide plate 4 between after, again with light source 3 via the image of light guide plate 4 transmissions with Charged Coupled Device (Charge Coupled Device, CCD) or colourity spectrometer (Chroma Spectrometer) high resolving power exposure take the photograph phase, thereby obtain the spatial distribution map in light and shade zone, it is the briliancy spatial distribution map, again with computer software (such as PhotoShop or the like) conversion mirror figure shelves, and then the arrangement plan of design light path adjustment unit 123, can utilize afterwards but be not limited only to following manner according to this arrangement plan light path adjustment unit 123 is formed on the lower surface of antistatic anti-adhesive coating 12:
Mode one: implement the light path adjustment unit 123 that net-point printing (dot printing) forms opaque or partially transparent with uvioresistant printing ink, as shown in Figure 4;
Mode two: to comprise but be not limited only to the trnaslucent materials of polycarbonate (PC), via coating (coating), vacuum evaporation or ion beam sputtering deposition or the like processing mode, form the light path adjustment unit 123 of different surfaces shape, as shown in Figure 5, surface configuration can be the light path adjustment unit 1231 of irregular V-arrangement, or the light path adjustment unit 1232 of irregular R shape;
Mode three: form light path adjustment unit 123 in conjunction with aforementioned manner one and mode two.
Can utilize following method to form the light scattering diaphragm 1 ' of a kind of embodiment as described above.At first, one transparent base of useing this substrate layer 10 as is packed in the holding tank, also heat to clean this substrate layer 10 with ultrasonic vibrations, follow it on a coating machine platform, the prescription that will constitute this diffusion layer 11 is again packed in this coating machine platform, activates board and prescription is coated on the one side of this transparent base; Then, semi-manufacture after coating finished are placed in the constant temperature and constant wetting type baking oven, carried out drying about 1 to 15 minute with 75 ℃ to 125 ℃ of temperature, and in confirming its thickness, after characteristic conforms is required, another side to this substrate layer 10 repeats abovementioned steps again, that is, with it on coating machine platform, the prescription that constitutes this antistatic anti-adhesive coating 12 is packed in this coating machine platform, prescription is coated on the another side of this transparent base, formed this antistatic anti-adhesive coating 12 has two surfaces, and its upper surface is to join with this transparent base, and its lower surface is then for the usefulness that light path adjustment unit 123 is set afterwards; Then these light scattering diaphragm semi-manufacture are placed in the constant temperature and constant wetting type baking oven in addition dry and confirm that its thickness, characteristic conforms are required.Above-mentioned application step can also replace in electrostatic spraying.
Subsequently, uvioresistant printing ink is printed on the lower surface of the anti-adhesive coating 12 of this finished product electrostatic according to desired arrangement plan, forms the light path adjustment unit 123 that constitutes by a plurality of printing net-points with mode of printing.
At last, again this blooming piece is placed ultraviolet ray (UV) dryer, carry out drying for 250 ℃ to 500 ℃ with temperature.The finished product of gained is the light scattering diaphragm 1 ' of embodiment as described above.
Formed light scattering diaphragm 1 ' can directly replace known diffusion sheet (as the diffusion sheet 1 of Fig. 1) and be used for the module backlight of various known display device according to the present invention, for example the straight-down negative of the known liquid crystal indicator shown in Fig. 1,3 and embedded module backlight need not carry out extra correction to these modules backlight.One exemplary embodiment as shown in Figure 6, its demonstration directly applies to light scattering diaphragm 1 ' of the present invention in the down straight aphototropism mode set with light source 3, in running, the light (shown in solid line) that light source 3 penetrates can directly enter antistatic anti-adhesive coating 12, perhaps the light (shown in dotted line) that penetrates of light source 3 can reflect after with part light scatter/reflection via light path adjustment unit 123 again and enter antistatic anti-adhesive coating 12, penetrate via substrate layer 10 and diffusion layer 11 more afterwards, make the light that penetrates not only can evenly disperse, and can improve the bright dipping briliancy.Another exemplary embodiment as shown in Figure 7, its demonstration directly applies to light scattering diaphragm 1 ' of the present invention in the module embedded backlight with light source 82, its function mode is analogous to Fig. 6, shows in addition that wherein the part light via the 123 scattering/reflections of light path adjustment unit can enter antistatic anti-adhesive coating 12 again after supporter 81 surface scattering/reflections.
Show through the reality test, use the module backlight of the display device of light scattering diaphragm of the present invention, can under the situation that does not increase thickness, process complexity or cost, reach the purpose that penetrates the light luminance homogenising and significantly improve the bright dipping briliancy.
The present invention elaborates with reference to exemplary embodiments, however this explanation and be not intended to demonstrate with restrictive one.Be familiar with this skill personage with reference to after illustrating, should know various corrections and combination and other embodiments of the invention of understanding exemplary embodiments.Therefore, any these corrections or embodiment all should belong to protection scope of the present invention.
[assembly symbol description]
1: diffusion sheet
1 ': the light scattering diaphragm
2: reflector plate
3: light source
4: LGP
5: sheet adds lustre to
6: reflecting polarized wafer
7: liquid crystal panel
8: the plane tabula rasa
10: substrate layer
11: diffusion layer
12: antistatic anti-adhesive coating
81: supporter
82: light source
111: adhesion
112: organic printing opacity scattering particle
113: inorganic fine particle
121: adhesion
122: organic printing opacity scattering particle
123: the light path adjustment unit
1231:V shape light path adjustment unit
1232:R shape light path adjustment unit
Claims (70)
1. light scattering diaphragm that is used for module backlight, this module backlight is provided with at least one light source, it is characterized in that: this light scattering diaphragm includes:
One substrate layer has two relative surfaces;
One diffusion layer, it is to be formed on the one side of this substrate layer; And
One antistatic anti-adhesive coating, it has first surface and second surface, and this first surface is to be formed on another opposite face of this substrate layer, and second surface has at least one light path adjustment unit, the setting of this light path adjustment unit is the setting that is relevant to this at least one light source
By this, the light of this at least one light source directly enters this antistatic anti-adhesive coating or via entering this antistatic anti-adhesive coating again behind this at least one light path adjustment unit adjustment path, outwards penetrates via this substrate layer and diffusion layer more afterwards.
2. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this substrate layer is to be made of a transparent or semitransparent layer.
3. the light scattering diaphragm that is used for module backlight as claimed in claim 2 is characterized in that: the material of this transparent or semitransparent layer is a resin molding.
4. the light scattering diaphragm that is used for module backlight as claimed in claim 3 is characterized in that: this resin molding is selected from polyethylene terephthalate, cellulose triacetate, poly-naphthoic acid second diester, poly-propylene diester, polyimide, polyethers, polycarbonate, polyamine, tygon, polypropylene or polyvinyl alcohol (PVA).
5. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: the thickness of this substrate layer is 25 to 300 microns.
6. the light scattering diaphragm that is used for module backlight as claimed in claim 5 is characterized in that: the thickness of this substrate layer is 50 to 200 microns.
7. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this diffusion layer and antistatic anti-adhesive coating comprise:
Several diffusion particles; And
Adhesion is in order to be anchored to substrate layer with these several diffusion particles.
8. the light scattering diaphragm that is used for module backlight as claimed in claim 7 is characterized in that: the material of this adhesion is hot plastic type macromolecule resin.
9. the light scattering diaphragm that is used for module backlight as claimed in claim 8 is characterized in that: this hot plastic type macromolecule resin can be selected from independent or condensate, polyester, polycarbonate, polystyrene or the polymethylpentene of (methyl) acrylate.
10. the light scattering diaphragm that is used for module backlight as claimed in claim 9 is characterized in that: the independent or optional autohemagglutination of condensate (methyl) methyl acrylate or poly-(methyl) ethyl acrylate of being somebody's turn to do (methyl) acrylate.
11. the light scattering diaphragm that is used for module backlight as claimed in claim 9 is characterized in that: this polyester can be tygon terephthaldehyde ester or polypropylene terephthaldehyde ester.
12. the light scattering diaphragm that is used for module backlight as claimed in claim 7 is characterized in that: the percentage by weight of this adhesion in this diffusion layer is 10% to 90%.
13. the light scattering diaphragm that is used for module backlight as claimed in claim 12 is characterized in that: the percentage by weight of this adhesion in this diffusion layer is 40% to 80%.
14. the light scattering diaphragm that is used for module backlight as claimed in claim 10 is characterized in that: the poly-percentage by weight of (methyl) methyl acrylate in this diffusion layer is 10% to 30%.
15. the light scattering diaphragm that is used for module backlight as claimed in claim 11 is characterized in that: the percentage by weight of tygon terephthaldehyde ester in this diffusion layer is 10% to 30%.
16. the light scattering diaphragm that is used for module backlight as claimed in claim 7 is characterized in that: the diffusion particle for this diffusion layer comprises organic diffusion particle and inorganic diffusion particle, and comprises organic diffusion particle for the diffusion particle of this antistatic anti-adhesive coating.
17. the light scattering diaphragm that is used for module backlight as claimed in claim 16, it is characterized in that: the material of this organic diffusion particle is selected from polymethylmethacrylate, polyphenyl butyl methacrylate or Polyvinylchloride.
18. the light scattering diaphragm that is used for module backlight as claimed in claim 16, it is characterized in that: the material of this inorganic diffusion particle can be selected from SiO
2, Al
2O
3Or silica gel.
19. the light scattering diaphragm that is used for module backlight as claimed in claim 16 is characterized in that: the percentage by weight of this organic diffusion particle in this diffusion layer is 10% to 90%.
20. the light scattering diaphragm that is used for module backlight as claimed in claim 19 is characterized in that: the percentage by weight of this organic diffusion particle in this diffusion layer is 40% to 80%.
21. the light scattering diaphragm that is used for module backlight as claimed in claim 16 is characterized in that: the percentage by weight of this inorganic diffusion particle in this diffusion layer is 30% to 90%.
22. the light scattering diaphragm that is used for module backlight as claimed in claim 21 is characterized in that: the percentage by weight of this inorganic diffusion particle in this diffusion layer is 40% to 90%.
23. the light scattering diaphragm that is used for module backlight as claimed in claim 17, it is characterized in that: the percentage by weight of polymethylmethacrylate in this diffusion layer is 15% to 40%, and the percentage by weight of polyphenyl butyl methacrylate in this diffusion layer is 10% to 30%.
24. the light scattering diaphragm that is used for module backlight as claimed in claim 18 is characterized in that: SiO
2Percentage by weight in this diffusion layer is 10% to 40%, and the percentage by weight of silica gel in this diffusion layer is 10% to 30%.
25. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: the thickness of this diffusion layer is 15 to 40 microns.
26. the light scattering diaphragm that is used for module backlight as claimed in claim 7 is characterized in that: the percentage by weight of this adhesion in this antistatic anti-adhesive coating is 60% to 95%.
27. the light scattering diaphragm that is used for module backlight as claimed in claim 26 is characterized in that: the percentage by weight of this adhesion in this antistatic anti-adhesive coating is 70% to 90%.
28. the light scattering diaphragm that is used for module backlight as claimed in claim 10 is characterized in that: the poly-percentage by weight of (methyl) methyl acrylate in this antistatic anti-adhesive coating is 10% to 70%.
29. the light scattering diaphragm that is used for module backlight as claimed in claim 11 is characterized in that: the percentage by weight of tygon terephthaldehyde ester in this antistatic anti-adhesive coating is 10% to 50%.
30. the light scattering diaphragm that is used for module backlight as claimed in claim 16 is characterized in that: the percentage by weight of this organic diffusion particle in this antistatic anti-adhesive coating is 5% to 40%.
31. the light scattering diaphragm that is used for module backlight as claimed in claim 30 is characterized in that: the percentage by weight of this organic diffusion particle in this antistatic anti-adhesive coating is 10% to 30%.
32. the light scattering diaphragm that is used for module backlight as claimed in claim 17 is characterized in that: the percentage by weight of polymethylmethacrylate in this antistatic anti-adhesive coating is 10% to 30%.
33. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: the thickness of this antistatic anti-adhesive coating is 10 to 25 microns.
34. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this light path adjustment unit is a printing net-point.
35. the light scattering diaphragm that is used for module backlight as claimed in claim 34 is characterized in that: this printing net-point is to be formed by uvioresistant printing ink.
36. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this light path adjustment unit is to be formed by trnaslucent materials.
37. the light scattering diaphragm that is used for module backlight as claimed in claim 36, it is characterized in that: this trnaslucent materials is a polycarbonate.
38. the light scattering diaphragm that is used for module backlight as claimed in claim 36 is characterized in that: this trnaslucent materials is to form the light path adjustment unit with coating, vacuum evaporation or ion beam sputtering deposition mode.
39. the light scattering diaphragm that is used for module backlight as claimed in claim 36 is characterized in that: this light path adjustment unit is the surface configuration with irregular V-arrangement.
40. the light scattering diaphragm that is used for module backlight as claimed in claim 36 is characterized in that: this light path adjustment unit is the surface configuration with irregular R shape.
41. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this module backlight is a down straight aphototropism mode set, and this light scattering diaphragm is positioned at directly over this light source.
42. the light scattering diaphragm that is used for module backlight as claimed in claim 41 is characterized in that: be provided with a light guide plate in the middle of this light source and this light scattering diaphragm, enter this light scattering diaphragm with the light of guiding this light source.
43. the light scattering diaphragm that is used for module backlight as claimed in claim 1 is characterized in that: this module backlight is embedded module backlight, and this light scattering diaphragm is located immediately at directly over this light source.
44. the method for making as the light scattering diaphragm that is used for module backlight of claim 1 to 43, it is characterized in that: its step includes:
The one transparent or semitransparent layer of useing substrate layer as is provided;
Form the antistatic anti-adhesive coating that a diffusion layer and has first surface and second surface respectively on the two relative surfaces of this transparent or semitransparent layer, the first surface of this antistatic anti-adhesive coating is to engage with this transparent or semitransparent layer; And
Second surface in this antistatic anti-adhesive coating forms at least one light path adjustment unit, and its setting is the setting that is relevant to this at least one light source.
45. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this diffusion layer is to form with coating method.
46. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this diffusion layer is to form in the electrostatic spraying mode.
47. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this antistatic anti-adhesive coating is to form with coating method.
48. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this antistatic anti-adhesive coating is to form in the electrostatic spraying mode.
49. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this light path adjustment unit is to form with mode of printing.
50. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this light path adjustment unit is to form with coating, vacuum evaporation or ion beam sputtering deposition mode.
51. a module backlight is characterized in that: this module backlight is provided with at least one light source and light scattering diaphragm, and this light scattering diaphragm includes:
One substrate layer has two relative surfaces;
One diffusion layer, it is to be formed on the one side of this substrate layer; And
One antistatic anti-adhesive coating, it has first surface and second surface, and this first surface is to be formed on another opposite face of this substrate layer, and second surface has at least one light path adjustment unit, the setting of this light path adjustment unit is the setting that is relevant to this at least one light source
By this, the light of this at least one light source directly enters this antistatic anti-adhesive coating or via entering this antistatic anti-adhesive coating again behind this at least one light path adjustment unit adjustment path, outwards penetrates via this substrate layer and diffusion layer more afterwards.
52. module backlight as claimed in claim 51 is characterized in that: this module backlight is a direct-type backlight module.
53. module backlight as claimed in claim 51 is characterized in that: this module backlight is an embedded module backlight.
54. a display device, it is provided with a module backlight, it is characterized in that: this module backlight is provided with at least one light source and light scattering diaphragm, and this light scattering diaphragm includes:
One substrate layer has two relative surfaces;
One diffusion layer, it is to be formed on the one side of this substrate layer: and
One antistatic anti-adhesive coating, it has first surface and second surface, and this first surface is to be formed on another opposite face of this substrate layer, and second surface has at least one light path adjustment unit, the setting of this light path adjustment unit is the setting that is relevant to this at least one light source
By this, the light of this at least one light source directly enters this antistatic anti-adhesive coating or via entering this antistatic anti-adhesive coating again behind this at least one light path adjustment unit adjustment path, outwards penetrates via this substrate layer and diffusion layer more afterwards.
55. display device as claimed in claim 54 is characterized in that: this module backlight is a direct-type backlight module.
56. display device as claimed in claim 54 is characterized in that: this module backlight is an embedded module backlight.
57. light scattering diaphragm as claimed in claim 1 is characterized in that: this at least one light path adjustment unit is to be set to be relevant to the formed briliancy space distribution of being provided with of this at least one light source.
58. light scattering diaphragm as claimed in claim 1 is characterized in that: this at least one light path adjustment unit is the setting that is set to corresponding to this at least one light source.
59. light scattering diaphragm as claimed in claim 58 is characterized in that: this at least one light path adjustment unit is to be set to corresponding to the formed briliancy space distribution of being provided with of this at least one light source.
60. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this at least one light path adjustment unit is to be set to be relevant to the formed briliancy space distribution of being provided with of this at least one light source.
61. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 44 is characterized in that: this at least one light path adjustment unit is the setting that is set to corresponding to this at least one light source.
62. the method for making that is used for the light scattering diaphragm of module backlight as claimed in claim 61 is characterized in that: this at least one light path adjustment unit is to be set to corresponding to the formed briliancy space distribution of being provided with of this at least one light source.
63. light scattering diaphragm as claimed in claim 1 is characterized in that: it is to make the light of this at least one light source produce scattering, reflection or refraction action that this at least one light path adjustment unit is adjusted the path.
64. light scattering diaphragm as claimed in claim 35 is characterized in that: this uvioresistant printing ink is opaque.
65. light scattering diaphragm as claimed in claim 35 is characterized in that: this uvioresistant printing ink is partially transparent.
66. light scattering diaphragm as claimed in claim 1 is characterized in that: this light path adjustment unit is to be formed by opaque and trnaslucent materials.
67. light scattering diaphragm as claimed in claim 1 is characterized in that: this light path adjustment unit is to be formed by partially transparent and trnaslucent materials.
68. as the described light scattering diaphragm of claim 66, it is characterized in that: this opaque material is a uvioresistant printing ink, trnaslucent materials is a polycarbonate.
69. as the described light scattering diaphragm of claim 67, it is characterized in that: the partially transparent material is a uvioresistant printing ink, trnaslucent materials is a polycarbonate.
70. light scattering diaphragm as claimed in claim 7 is characterized in that: the diffusion particle of antistatic anti-adhesive coating is the surface that protrudes from adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610067658 CN101042488A (en) | 2006-03-24 | 2006-03-24 | Light scattering diaphragm and manufacturing method therefore, and back light module unit using same and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610067658 CN101042488A (en) | 2006-03-24 | 2006-03-24 | Light scattering diaphragm and manufacturing method therefore, and back light module unit using same and display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101042488A true CN101042488A (en) | 2007-09-26 |
Family
ID=38808114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610067658 Pending CN101042488A (en) | 2006-03-24 | 2006-03-24 | Light scattering diaphragm and manufacturing method therefore, and back light module unit using same and display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101042488A (en) |
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| CN101957465A (en) * | 2010-10-15 | 2011-01-26 | 中国乐凯胶片集团公司 | Optical diffusion film and preparation method thereof |
| CN102494253A (en) * | 2011-12-16 | 2012-06-13 | 苏州茂立光电科技有限公司 | Light source module |
| CN103375741A (en) * | 2012-04-30 | 2013-10-30 | 中强光电股份有限公司 | Light guide plate and backlight module using same |
| WO2014029145A1 (en) * | 2012-08-24 | 2014-02-27 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| WO2014190676A1 (en) * | 2013-05-30 | 2014-12-04 | 京东方科技集团股份有限公司 | Exposure device and exposure method |
| US9008472B2 (en) | 2012-08-24 | 2015-04-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Light guide plate and manufacturing method thereof |
| CN104865623A (en) * | 2015-06-17 | 2015-08-26 | 东莞市颖锋光电材料有限公司 | Three-in-one optical diffusion plate |
| CN105223729A (en) * | 2015-11-03 | 2016-01-06 | 昆山龙腾光电有限公司 | A kind of liquid crystal indicator |
| CN107474437A (en) * | 2017-09-01 | 2017-12-15 | 苏州罗格特光电科技有限公司 | A kind of preparation method of wide low temperature polyimide film material |
| CN107490902A (en) * | 2017-10-12 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of backlight module, display panel, display device |
| WO2018133361A1 (en) * | 2017-01-17 | 2018-07-26 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
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| CN101957465A (en) * | 2010-10-15 | 2011-01-26 | 中国乐凯胶片集团公司 | Optical diffusion film and preparation method thereof |
| CN102494253A (en) * | 2011-12-16 | 2012-06-13 | 苏州茂立光电科技有限公司 | Light source module |
| US9329328B2 (en) | 2012-04-30 | 2016-05-03 | Coretronic Corporation | Light guide plate and backlight module using the same |
| CN103375741A (en) * | 2012-04-30 | 2013-10-30 | 中强光电股份有限公司 | Light guide plate and backlight module using same |
| WO2014029145A1 (en) * | 2012-08-24 | 2014-02-27 | 深圳市华星光电技术有限公司 | Light guide plate and manufacturing method thereof |
| US9008472B2 (en) | 2012-08-24 | 2015-04-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Light guide plate and manufacturing method thereof |
| WO2014190676A1 (en) * | 2013-05-30 | 2014-12-04 | 京东方科技集团股份有限公司 | Exposure device and exposure method |
| US9500955B2 (en) | 2013-05-30 | 2016-11-22 | Boe Technology Group Co., Ltd. | Exposure apparatus and exposure method |
| CN104865623A (en) * | 2015-06-17 | 2015-08-26 | 东莞市颖锋光电材料有限公司 | Three-in-one optical diffusion plate |
| CN105223729A (en) * | 2015-11-03 | 2016-01-06 | 昆山龙腾光电有限公司 | A kind of liquid crystal indicator |
| WO2018133361A1 (en) * | 2017-01-17 | 2018-07-26 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| US10591773B2 (en) | 2017-01-17 | 2020-03-17 | Boe Technology Group Co., Ltd. | Backlight module and liquid crystal display device |
| CN107474437A (en) * | 2017-09-01 | 2017-12-15 | 苏州罗格特光电科技有限公司 | A kind of preparation method of wide low temperature polyimide film material |
| CN107490902A (en) * | 2017-10-12 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of backlight module, display panel, display device |
| CN111531998A (en) * | 2020-04-30 | 2020-08-14 | 王洛 | Optical polyester film |
| CN113682020A (en) * | 2021-09-03 | 2021-11-23 | 宁波东旭成新材料科技有限公司 | Antistatic reflective film of Mini-LED backlight module |
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