CN101788735B - Backlight module and liquid crystal display comprising same - Google Patents
Backlight module and liquid crystal display comprising same Download PDFInfo
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- CN101788735B CN101788735B CN2009100033803A CN200910003380A CN101788735B CN 101788735 B CN101788735 B CN 101788735B CN 2009100033803 A CN2009100033803 A CN 2009100033803A CN 200910003380 A CN200910003380 A CN 200910003380A CN 101788735 B CN101788735 B CN 101788735B
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Abstract
The invention provides a backlight module and a liquid crystal display comprising the same. The backlight module at least comprises a back plate, a light source and at least one optical plate, wherein the light source is arranged in the back plate; and the optical plate is arranged on the back plate and at least comprises a baseplate and at least one translucent coating, wherein the translucent coating is at least coated on the light incidence face of the baseplate so that incident lights from the light source towards the light incidence face of the baseplate of the at least one optical plategenerate constructive interference when passing through the at least one translucent coating.
Description
Technical field
The present invention generally relates to backlight module and application thereof, especially, and the liquid crystal display that relates to a kind of high-level efficiency backlight module and comprise this backlight module.
Background technology
In the display technique of plane, lcd technology is that development the most also is the display technique that attracts most attention at present.Generally speaking, that liquid crystal display has is lightweight, thin thickness, power consumption is low and the advantage such as radiationless pollution, and is widely used on the display device of various electronic components, particularly weight and size is being had on the portable electronic component of strict demand.
Because liquid crystal display itself can't be luminous, thereby need to provide to display panels by means of backlight module the light of abundance and uniform luminance, so that display panels can show image.Just because of this, backlight module is assembly quite crucial in the liquid crystal display.Generally, backlight module can be divided into down straight aphototropism mode set and side injection type backlight module according to the difference of light source ornaments position.
In the backlight module of liquid crystal display, generally can many blooming pieces or optical plate be set on light source, to improve the bright dipping quality of backlight module.At present, in general backlight module, generally include brightness enhancement film (Brightness Enhancement Film, BEF), reflective brightness enhancement film (Dual Brightness Enhancement Film, DBEF) and diffuser plate etc. in these blooming pieces or the optical plate.Wherein, brightness enhancement film and reflective brightness enhancement film can utilize refraction and the reflex of light in diaphragm to come the improving optical utilization factor, and then can make the briliancy of backlight module obtain to promote.Also comprise light guide plate in the optical plate that the side injection type backlight module adopts, wherein light guide plate can be guided the incident light of side so that the luminous energy that light source sends is uniformly distributed in the integral body of backlight module.At present, for further improving the utilization ratio of light source, also develop the light guide plate framework that a kind of exiting surface is provided with the V-type surface groove structures.
Therefore, be generally the source efficiency of Effective Raise backlight module, mode commonly used is to use brightness enhancement film, reflective brightness enhancement film and/or exiting surface to have the light guide plate of V-groove structure.Yet brightness enhancement film is the printing opacity diaphragm that a kind of surface has prism structure, so the use of brightness enhancement film can cause the visual angle of flat-panel screens to diminish.In addition, reflective brightness enhancement film is a kind of blooming piece that prices are rather stiff, and therefore the use of reflective brightness enhancement film can cause the cost of backlight module significantly to increase.And when using the light guide plate of V-type surface structure, also can cause the visual angle of flat-panel screens to diminish, and the light guide plate with V-type surface structure makes and is difficult for, thereby price is relatively costly, therefore can cause too the increase of backlight module cost.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of backlight module, and the incidence surface of its optics sheet material is coated with at least one antireflection coating, can improve the surface penetrability of optics sheet material, thereby can promote the efficient that light source enters optics sheet material, and then can increase the overall brightness of backlight module.
Another object of the present invention is to provide a kind of backlight module, the incidence surface of its optics sheet material is coated with at least one antireflection coating, therefore can improve the flatness of the incidence surface of optics sheet material, scattering loss in the time of can reducing light incident, and then can increase the light quantity that enters of optical plate, effectively promote the utilization ratio of light source.
Another purpose of the present invention is to provide a kind of liquid crystal display, and the utilization ratio of the light source of its backlight module is high, so the power consumption that can save light source, and then can promote the service time of portable liquid crystal display.
A further object of the present invention is to provide a kind of liquid crystal display, only need be coated with by the incidence surface at optics sheet material the mode of at least one antireflection coating, get final product the integral brightness of Effective Raise liquid crystal display, therefore not only technique simply is easy to implement, and also can not cause the burden of liquid crystal display cost.
According to above-mentioned purpose of the present invention, a kind of backlight module is proposed, comprise at least: backboard; Light source is located in the backboard; And at least one optics sheet material, be located on the backboard, wherein this at least one optics sheet material comprises substrate and at least one antireflection coating at least, described at least one antireflection coating is coated with an incidence surface that is located at substrate, so that light source produces constructive interference during through aforementioned antireflection coating towards the light of the incidence surface incident of this substrate.
According to a preferred embodiment of the present invention, above-mentioned backlight module is the side injection type backlight module, and above-mentioned optics sheet material is light guide plate.
According to another preferred embodiment of the present invention, above-mentioned at least one antireflection coating is the individual layer plated film.In addition, the refraction coefficient of this antireflection coating is less than the refraction coefficient of substrate.
According to above-mentioned purpose of the present invention, a kind of liquid crystal display is proposed, comprise at least display panels and backlight module, this backlight module is located at the back side of display panels, and wherein this backlight module comprises at least: backboard; Light source is located in the backboard; And at least one optics sheet material, be located on the backboard, wherein this at least one optics sheet material comprises substrate and at least one antireflection coating at least, described at least one antireflection coating is coated with an incidence surface that is located at this substrate, so that light source produces constructive interference during through this at least one antireflection coating towards the light of the incidence surface incident of aforementioned substrate.
According to a preferred embodiment of the present invention, above-mentioned at least one antireflection coating is the multicoating that is made of a plurality of antireflection coatings, and wherein the equivalent refraction coefficient of these antireflection coatings is less than the refraction coefficient of substrate.
According to another preferred embodiment of the present invention, the equivalent refraction coefficient of these antireflection coatings and the gross thickness of these antireflection coatings and light source equal the m/4 of the optical wavelength of light source, wherein m=1,3,5 at the product of the cosine value of the incident angle of incidence surface ... Deng positive odd number.
Description of drawings
Fig. 1 is the schematic perspective view that illustrates according to a kind of light guide plate of a preferred embodiment of the present invention.
Fig. 2 is the schematic diagram that arranges that illustrates according to the antireflection coating of a kind of light guide plate of a preferred embodiment of the present invention.
Fig. 3 A and Fig. 3 B are the schematic diagram that arranges that illustrates according to the antireflection coating of a kind of light guide plate of another preferred embodiment of the present invention.
Fig. 4 is the schematic perspective view that illustrates according to a kind of optics sheet material of another preferred embodiment of the present invention.
Fig. 5 is the package system figure that illustrates according to a kind of liquid crystal display of a preferred embodiment of the present invention.
Fig. 6 is the package system figure that illustrates according to a kind of liquid crystal display of another preferred embodiment of the present invention.
Main description of reference numerals
100: light guide plate 102: substrate
104: incidence surface 106: antireflection coating
108: coating roller 110: optics sheet material
112: substrate 114: incidence surface
116: antireflection coating 118: coating fluid
120: liquid tank 200: liquid crystal display
202: backlight module 204: backboard
206: light source 208: display panels
300: liquid crystal display 302: backlight module
304: backboard 306: light source
308: display panels d: thickness
D1: thickness
Embodiment
The present invention discloses a kind of backlight module and application thereof.In order to make narration of the present invention more detailed and complete, can and cooperate with reference to following description that Fig. 1's to Fig. 6 is graphic.
In the present invention, at least one optics sheet material is set in backlight module, and is coated with at least mode of one deck antireflection coating by the incidence surface at this optics sheet material, make the incident light of injecting this incidence surface produce constructive interference, and then increase the light quantity that enters of optics sheet material, promote the efficient of light source.Optics sheet material of the present invention can be the blooming pieces such as light guide plate and diffuser plate, brightness enhancement film, reflective brightness enhancement film.
In an example embodiment, at the incidence surface coating antireflection coating of light guide plate.Please refer to Fig. 1, it illustrates the schematic perspective view according to a kind of light guide plate of a preferred embodiment of the present invention.Light guide plate 100 mainly is made of with at least one antireflection coating 106 substrate 102 of light-permeable, and wherein antireflection coating 106 is coated on the incidence surface 104 of substrate 102.Light guide plate 100 is made of the sheet material of light-permeable, and wherein the material of the substrate 102 of light guide plate 100 can for example be polymethylmethacrylate (PMMA).The characteristic of the material that antireflection coating 106 is selected be preferably membranous evenly, refractive index fixes, optical property is not with environment change and do not have the character of ABSORPTION AND SCATTERING.In addition, antireflection coating 106 preferably has high tack, on the incidence surface 104 that firmly is attached to substrate 102.In addition, antireflection coating 106 preferably has high rigidity, with the damage of avoiding causing because of friction.In addition, antireflection coating 106 preferred employings are not easy rotten and difficult and the aitiogenic material of other materials.In addition, the material of antireflection coating 106 preferably can reach thermal expansion matching with substrate 102, peels off on the incidence surface 104 of substrate 102 because variation of ambient temperature causes antireflection coating 106 avoiding.In an example embodiment, antireflection coating 106 can be dielectric film or metallic film.
In the embodiment shown in fig. 1, the incidence surface 104 of the substrate 102 of light guide plate 100 only is coated with simple layer antireflection coating 106.Yet in other embodiments of the invention, the incidence surface of the substrate of light guide plate can be coated with the multilayer antireflection coating, thereby the incidence surface of the substrate of light guide plate is coated with a multicoating structure.When the incidence surface of the optics sheet materials such as light guide plate was coated with the multilayer antireflection coating, this multilayer antireflection coating structure was formed by two staggered stacking of antireflection coating with height different refractivity usually.
In this example embodiment, mainly change the light wave transmission characteristic of incident light by antireflection coating 106, and make incident light produce constructive interference, and then reduce the reflectivity of the incidence surface of light guide plate 100, more transfer to improve the light quantity that enters of light guide plate 100.In addition, because substrate 102 surfaces of light guide plate 100 mostly need experience mechanical mirror polish program, and mechanical mirror polish technology still has certain limit, thereby substrate 102 surfaces of light guide plate 100 are not fully smooth, therefore antireflection coating 106 is coated the incidence surface 104 of the substrate 102 of light guide plate 100, also can effectively improve the flatness of the incidence surface of light guide plate 100, and can reduce the scattering loss of incident light, also can increase further the light quantity that enters of light guide plate 100.
In this example embodiment, produce constructive interference for making the incident light that enters light guide plate 100 through antireflection coating 106, the refractive index of antireflection coating 106 is less than the refractive index of substrate 102.In addition, the thickness of antireflection coating 106 can affect the reflectivity of the incident light of light guide plate 100, wherein the refractive index n of the thickness d of antireflection coating 106 and antireflection coating 106, and light source the product of the cosine value of the incidence angle θ of the incident light of the incidence surface of light guide plate 100 is preferably the m/4 of the light wavelength lambda that equals light source, that is
n×d×cosθ＝m×λ/4
Wherein, m is 1,3,5 ... Deng positive odd number, can make like this incident light through the antireflection coating 106 on the incidence surface 104 produce constructive interference, and can reduce the reflectivity of the incidence surface of light guide plate 100.
In another example embodiment, the incidence surface 104 of the substrate 102 of light guide plate 100 is coated with the multilayer antireflection coating, wherein the refractive index of these antireflection coatings is all less than the refractive index of substrate 102, and the equivalent refractive index of all antireflection coatings is less than the refractive index of substrate 102, and the incident light that is beneficial to enter through these antireflection coatings light guide plate 100 produces constructive interference.In addition, the gross thickness d of these antireflection coatings
tEquivalent refractive index n with these antireflection coatings
e, and light source to the better m/4 that equals the light wavelength lambda of light source of the product of the cosine value of the incidence angle θ of the incident light of the incidence surface of this light guide plate 100, that is
n
e×d
t×cosθ＝m×λ/4
Wherein, m is 1,3,5 ... Deng positive odd number, like this, can make the incident light through all antireflection coatings on the incidence surface 104 produce constructive interference, and can reduce the reflectivity of the incidence surface of light guide plate 100.
In an example embodiment, when the incidence surface 104 coating antireflection coating 106 of the substrate 102 of light guide plate 100, can utilize coating roller 108 with roll mode antireflection coating 106 to be coated on the incidence surface 104 of substrate 102 of light guide plate 100, as shown in Figure 2, and then light guide plate 100 toasted, can finish the coating of antireflection coating 106.In another example embodiment, the incidence surface 104 of the substrate 102 of light guide plate 100 can be soaked in first in the coating fluid 118 in the liquid tank 120, as shown in Figure 3A; Then, the coating fluid 118 of substrate 102 from liquid tank 120 of light guide plate 100 pulled out, shown in Fig. 3 B; Next, light guide plate 100 is toasted, can finish the coating of antireflection coating 106.
The present invention also can at light guide plate optical plate in addition, implement such as brightness enhancement film, reflective brightness enhancement film and diffuser plate etc. are upper.Please refer to Fig. 4, it is the schematic perspective view that illustrates according to a kind of optics sheet material of another preferred embodiment of the present invention.Optics sheet material 110 can be diffuser plate or some blooming pieces, such as brightness enhancement film or reflective brightness enhancement film etc.Because optics sheet material 110 is arranged on the top of the light source of backlight module usually, so the incidence surface of optics sheet material 110 generally refers to the bottom surface of optics sheet material 110.Optics sheet material 110 mainly is made of with at least one antireflection coating 116 substrate 112 of light-permeable, and wherein antireflection coating 116 is coated on the incidence surface 114 of substrate 112.Optics sheet material 110 is made of the sheet material of light-permeable.The characteristic of the material that antireflection coating 116 is selected be preferably membranous evenly, refractive index fixes, optical property is not with environment change and do not have the character of ABSORPTION AND SCATTERING.In addition, antireflection coating 116 is better to have high tack, firmly surely to be attached on the incidence surface 114 of substrate 112.And antireflection coating 116 is better to have a high rigidity, sustains damage because of friction avoiding.Antireflection coating 116 better employings are not easy rotten and are difficult for and the aitiogenic material of other materials.The material of antireflection coating 116 preferably can reach thermal expansion matching with substrate 112, peels off on the incidence surface 114 of substrate 112 because variation of ambient temperature causes antireflection coating 116 avoiding.In an example embodiment, antireflection coating 116 can be dielectric film or metallic film or metal compound film.
In the embodiment shown in fig. 4, the incidence surface 114 of the substrate 112 of optics sheet material 110 only is coated with simple layer antireflection coating 116.Yet in other embodiments of the invention, the incidence surface of the substrate of optics sheet material can be coated with the multilayer antireflection coating, thereby the incidence surface of the substrate of optics sheet material is coated with a multicoating structure.When the incidence surface of the substrate of optics sheet material was coated with the multilayer antireflection coating, this multilayer antireflection coating structure was formed by staggered the stacking of antireflection coating of two kinds of tools height different refractivities usually.
In this example embodiment, mainly change the light wave transmission characteristic of incident light by antireflection coating 116, and make incident light produce constructive interference, and then reduce the reflectivity of the incidence surface of optics sheet material 110, then improve the light quantity that enters of optics sheet material 110.In addition, because substrate 112 surfaces of optics sheet material 110 mostly need through mechanical mirror polish program, and mechanical mirror polish technology still has certain limit, thereby substrate 112 surfaces of optics sheet material 110 are not fully smooth, therefore antireflection coating 116 is coated the incidence surface 114 of the substrate 112 of optics sheet material 110, also can effectively improve the flatness of the incidence surface of optics sheet material 110, and can reduce the scattering loss of incident light, also can increase further the light quantity that enters of optics sheet material 110.
In this example embodiment, produce constructive interference for making the incident light that enters optics sheet material 110 through antireflection coating 116, the refractive index of antireflection coating 116 is less than the refractive index of substrate 112.In addition, the thickness of antireflection coating 116 can affect the reflectivity of the incident light of optics sheet material 110, wherein the thickness d of antireflection coating 116
1With the refractive index n of antireflection coating 116, and light source the product of the cosine value of the incidence angle θ of the incident light of the incidence surface of optics sheet material 110 is preferably equaled the m/4 of the light wavelength lambda of light source, that is
n×d
1×cosθ＝m×λ/4
Wherein, m is 1,3,5 ... Deng positive odd number, so can make the incident light through the antireflection coating 116 on the incidence surface 114 produce constructive interference, and can reduce the reflectivity of the incidence surface of optics sheet material 110.
In another example embodiment, the incidence surface 114 of the substrate 112 of optics sheet material 110 is coated with the multilayer antireflection coating, wherein the refractive index of these antireflection coatings is all less than the refractive index of substrate 112, and the equivalent refractive index of all antireflection coatings is less than the refractive index of substrate 112, and the incident light that is beneficial to enter through these antireflection coatings optics sheet material 110 produces constructive interference.In addition, the gross thickness d of these antireflection coatings
tEquivalent refractive index n with these antireflection coatings
e, and light source the product of the cosine value of the incidence angle θ of the incident light of the incidence surface of this optics sheet material 110 is preferably equaled the m/4 of the light wavelength lambda of light source, that is
n
e×d
t×cosθ＝m×λ/4
Wherein, m is 1,3,5 ... Deng positive odd number, thus, can make the incident light through all antireflection coatings on the incidence surface 114 produce constructive interference, and can reduce the reflectivity of the incidence surface of optics sheet material 110.
The light guide plate of embodiments of the invention and optics sheet material can be applicable in the liquid crystal display that comprises side injection type backlight module or down straight aphototropism mode set.Please refer to Fig. 5, it is the package system figure that illustrates according to a kind of liquid crystal display of a preferred embodiment of the present invention.Liquid crystal display 200 comprises backlight module 202 and display panels 208 at least, and wherein backlight module 202 is arranged on the back side of display panels 208.Backlight module 202 is the side injection type backlight module in this example embodiment, and the light guide plate 100 of above-mentioned embodiment shown in Figure 1 can be applicable in this side injection type backlight module.This backlight module 202 comprises backboard 204, light source 206 and light guide plate 100 at least, wherein light guide plate 100 is located on the backboard 204,206 of light sources are arranged in the backboard 204, and light source 206 provides light with the side at backboard 204 between a side of a side of light guide plate 100 and backboard 204.Light source 206 can for example be cold cathode fluorescent lamp (CCFL) or light emitting diode (LED).The incidence surface 104 of the substrate 102 of light guide plate 100 is in the face of light source 206, and the first antireflection coating 106 through light guide plate 100 of incident light that light source 206 sends towards light guide plate 100 enters whole light guide plate 100 again via the incidence surface 104 of substrate 102.At this moment, light guide plate 100 can be guided the incident light via antireflection coating 106, so that the luminous energy that light source 206 sends is uniformly distributed in the integral body of backlight module 202.
In another embodiment, backlight module 202 also optionally comprises diffuser plate (not illustrating), be arranged on the light guide plate 100, and between light guide plate 100 and display panels 208, wherein this diffuser plate can be general traditional diffuser plate, or have diffuser plate as the framework of optics sheet material 110 as shown in Figure 2, that is on the bottom surface, be provided with in addition the diffuser plate of antireflection coating.In other embodiments, backlight module 202 also can optionally comprise diffuser plate and at least one blooming piece (not illustrating) according to product demand, for example common brightness enhancement film and reflective brightness enhancement film, wherein this diffuser plate and these blooming pieces can be general traditional diffuser plate and blooming piece, or have diffuser plate and blooming piece as the framework of optics sheet material 110 as shown in Figure 2, that is on the bottom surface, be provided with in addition diffuser plate and the blooming piece of antireflection coating.
By at the set antireflection coating 106 of the incidence surface of light guide plate 100, can change the light wave transmission characteristic of incident light, and make incident light produce constructive interference, and then can effectively reduce the reflectivity of the incidence surface of light guide plate 100, further reach the purpose that enters light quantity that improves light guide plate 100.In addition, by being coated with of antireflection coating 106, can effectively promote the flatness of the incidence surface of light guide plate 100, and can reduce the scattering loss of incident light, and then can increase the light quantity that enters of light guide plate 100.
In other embodiments of the invention, the side injection type backlight module can comprise light guide plate, diffuser plate and/or at least one blooming piece, for example brightness enhancement film and reflective brightness enhancement film, and at least a incidence surface in light guide plate, diffuser plate and blooming piece is coated with at least one deck antireflection coating simultaneously.
Please refer to Fig. 6, it is the package system figure that illustrates according to a kind of liquid crystal display of another preferred embodiment of the present invention.Liquid crystal display 300 comprises backlight module 302 and display panels 308 at least, and wherein backlight module 302 is arranged on the back side of display panels 308.Backlight module 302 is down straight aphototropism mode set in this example embodiment, and the optics sheet material 110 of above-mentioned embodiment shown in Figure 4 can be applicable in this down straight aphototropism mode set.This backlight module 302 comprises backboard 304, several light sources 306 and at least one optics sheet material 110 at least, wherein light source 306 is arranged in the backboard 304,110 of optics sheet materials are located on the backboard 304 and are positioned on these light sources 306, thereby light source 306 can provide light under optics sheet material 110.These light sources 306 can for example be cold cathode fluorescent lamp or light emitting diode.The incidence surface 114 of the substrate 112 of optics sheet material 110 is faced mutually with light source 306, and light source 306 enters among the substrate 112 via the incidence surface 114 of substrate 112 towards the first antireflection coating 116 through optics sheet material 110 of incident light that optics sheet material 110 sends again.
In this example embodiment, optics sheet material 110 can be diffuser plate or blooming piece, for example brightness enhancement film and reflective brightness enhancement film.In another embodiment, the optics sheet material of backlight module 302 also can optionally comprise diffuser plate and at least one blooming piece according to the actual product demand, for example brightness enhancement film and reflective brightness enhancement film, at least a framework with optics sheet material 110 as shown in Figure 2 in diffuser plate and these blooming pieces wherein, that is on the bottom surface, being provided with in addition diffuser plate and the blooming piece of antireflection coating, diffuser plate and these blooming pieces can all have the framework of optics sheet material 110 as shown in Figure 2.
By at the set antireflection coating 116 of the incidence surface of optics sheet material 110, can change the light wave transmission characteristic of incident light, and make incident light produce constructive interference, and then can effectively reduce the reflectivity of the incidence surface of optics sheet material 110, further reach the purpose that enters light quantity that improves optics sheet material 110.On the other hand, by being coated with of antireflection coating 116, the effective flatness of the incidence surface of improving optical sheet material 110, and can reduce the scattering loss of incident light, and then can increase the light quantity that enters of optics sheet material 110.
By the example embodiment of the invention described above as can be known, one advantage of the backlight module of example embodiment of the present invention is exactly because the incidence surface of its optics sheet material is coated with at least one antireflection coating, therefore can improve the surface penetrability of optics sheet material, and can promote the efficient that light source enters optics sheet material, and then can reach the purpose of the overall brightness that increases backlight module.
By the example embodiment of the invention described above as can be known, another advantage of the backlight module of example embodiment of the present invention is exactly because the incidence surface of its optics sheet material is coated with at least one antireflection coating, therefore can improve the flatness of the incidence surface of optics sheet material, and the scattering loss can reduce light incident the time, and then can increase the light quantity that enters of optical plate, reach the purpose of the utilization ratio of effective lifting light source.
By the example embodiment of the invention described above as can be known, one advantage of the liquid crystal display of example embodiment of the present invention is exactly because the utilization ratio of the light source of its backlight module is high, therefore the power consumption that can save light source, and then can promote service time of portable liquid crystal display.
By the example embodiment of the invention described above as can be known, another advantage of the liquid crystal display of example embodiment of the present invention is exactly because it only need be coated with by the incidence surface at optics sheet material the mode of at least one antireflection coating, get final product the integral brightness of Effective Raise liquid crystal display, therefore not only technique simply is easy to implement, and also can not cause the burden of liquid crystal display cost.
Although the present invention discloses as above with preferred embodiment; but it is not to limit the present invention; any those of ordinary skills without departing from the spirit and scope of the present invention; can carry out various changes and retouching, thus protection scope of the present invention when with appended claims and equivalent thereof the person of being defined be as the criterion.
Claims (11)
1. liquid crystal display comprises at least:
Display panels; And
Backlight module is located at the back side of this display panels, and wherein this backlight module comprises at least:
Backboard;
Light source is located in this backboard; And
At least one optics sheet material, be located on this backboard, wherein this at least one optics sheet material comprises a substrate and at least one antireflection coating at least, described at least one antireflection coating is coated with an incidence surface that is located at this substrate, so that this light source produces constructive interference during through this at least one antireflection coating towards the light of this incidence surface incident of this substrate
Wherein the refraction coefficient of this at least one antireflection coating is less than the refraction coefficient of this substrate.
2. liquid crystal display according to claim 1, wherein this at least one optics sheet material comprises light guide plate.
3. liquid crystal display according to claim 1, wherein this at least one optics sheet material comprises diffuser plate.
4. liquid crystal display according to claim 1, wherein this at least one optics sheet material comprises a blooming piece.
5. liquid crystal display according to claim 1, wherein this at least one antireflection coating is the individual layer plated film.
6. liquid crystal display according to claim 5, the wherein thickness of the refraction coefficient of this at least one antireflection coating and this at least one antireflection coating and this light source equals the optical wavelength of this light source to the product of the cosine value of the incident angle of this incidence surface m/4, m is positive odd number.
7. liquid crystal display according to claim 1, wherein this at least one antireflection coating is the multicoating that is made of a plurality of antireflection coatings.
8. liquid crystal display according to claim 7, the equivalent refraction coefficient of wherein said a plurality of antireflection coatings is less than the refraction coefficient of this substrate.
9. liquid crystal display according to claim 7, the equivalent refraction coefficient of wherein said a plurality of antireflection coatings and the gross thickness of described a plurality of antireflection coatings and this light source equal the m/4 of the optical wavelength of this light source to the product of the cosine value of the incident angle of this incidence surface, m is positive odd number.
10. liquid crystal display according to claim 1, wherein the material of this at least one antireflection coating is dielectric film.
11. liquid crystal display according to claim 1, wherein the material of this at least one antireflection coating is metal or metal compound film.
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| CN2009100033803A CN101788735B (en) | 2009-01-22 | 2009-01-22 | Backlight module and liquid crystal display comprising same |
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| CN101788735B true CN101788735B (en) | 2013-10-16 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979276A (en) * | 2005-12-06 | 2007-06-13 | 三星电子株式会社 | Liquid crystal display and panel therefor |
| CN200968993Y (en) * | 2006-09-20 | 2007-10-31 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and backlight module having the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6096375A (en) * | 1993-12-21 | 2000-08-01 | 3M Innovative Properties Company | Optical polarizer |
| US7295179B2 (en) * | 2003-01-31 | 2007-11-13 | American Panel Corporation | Flat panel display having multiple display areas on one glass substrate |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979276A (en) * | 2005-12-06 | 2007-06-13 | 三星电子株式会社 | Liquid crystal display and panel therefor |
| CN200968993Y (en) * | 2006-09-20 | 2007-10-31 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and backlight module having the same |
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