CN101221319A - LCD and backlight module thereof - Google Patents
LCD and backlight module thereof Download PDFInfo
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- CN101221319A CN101221319A CNA2008100070899A CN200810007089A CN101221319A CN 101221319 A CN101221319 A CN 101221319A CN A2008100070899 A CNA2008100070899 A CN A2008100070899A CN 200810007089 A CN200810007089 A CN 200810007089A CN 101221319 A CN101221319 A CN 101221319A
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Abstract
The invention discloses a liquid crystal display and a backlight module thereof, wherein the backlight module is used for providing a light source for a liquid crystal display panel. The backlight module contains a shell, at least one light source generator and an optical color filter. The light source generator is arranged inside the shell for generating while light. The optic color filter is arranged on a path along which the white light rays generated by the light source generator travel to the liquid crystal display panel, for filtering part of white light rays entering the liquid crystal display panel which are in a certain wavelength range within the wavelength range of visible light, wherein the white light rays passing through the optic color filter are also white light rays.
Description
Technical field
The present invention relates to a kind of LCD and backlight module thereof, relate in particular to a kind of light that utilizes the part particular range of wavelengths in the optics color filter filtering visible wavelength range, and can show the LCD and the backlight module thereof of broad colour gamut.
Background technology
LCD is owing to be the display device of non-autonomous luminous pattern, need be dependent on backlight module provides the light source can display frame, therefore, backlight module is one of key part and component of lcd products, and the quality of the backlight that it provided directly influences the display quality of LCD especially.Generally speaking, backlight module all is located at the back side of display panels, and the front of display panels is used for display frame.Backlight module generally includes members such as housing, light source generator (as fluorescent tube), diffuser plate and light guide plate, and backlight module is according to the position difference according to light source, can be divided into light source generator and be arranged at direct type backlight module under the display panels, or light source generator is arranged at corresponding near the side-light type the below of display panels side (edge light) backlight module.
Along with requiring to improve day by day for display quality on the market, requirement for color representation in the development of LCD also constantly promotes, and must utilize the fluoresent coating (phosphor coating) that changes fluorescent tube, the light-filtering characteristic of adjusting colored filter, or use mode such as three-colour light-emitting disome light source to increase colour gamut (gamut) at this prior art.
Yet the practice of above-mentioned existing mode all need change the design of available liquid crystal display or backlight module, or significantly increase light emitting diode quantity and cause cost and drive complexity and increase, therefore how under the framework of available liquid crystal display and backlight module, effectively promote colour gamut specification reality and be the important topic of present industrial community research.
Summary of the invention
Therefore, technical matters to be solved by this invention is to provide a kind of LCD and backlight module thereof, to increase the colour gamut of LCD.
For achieving the above object, the invention provides a kind of backlight module, in order to provide display panels used light source.Above-mentioned backlight module comprises a housing, at least one light source generator, and an optics color filter.Light source generator is located within the housing, in order to produce white light light.The optics color filter is located at the white light light that light source generator produces and is marched on the path of display panels, in order to be positioned at the part specific wavelength of visible wavelength range in the filtering white light light, wherein the form and aspect of white light light in white light light by still being same form and aspect behind the optics color filter.
For achieving the above object, the present invention provides a kind of LCD in addition.Above-mentioned LCD comprises a display panels, and a backlight module.Display panels comprises a colored filter.Backlight module is arranged at the display panels below, and in order to provide display panels used light source, backlight module comprises a housing, at least one light source generator, and an optics color filter.Light source generator is located within the housing, in order to produce white light light.The optics color filter is located at the white light light that light source generator produces and is marched on the path of display panels, and the light that wherein is positioned at the part particular range of wavelengths of visible wavelength range is lower than a specific penetrance to the penetrance of this optics color filter.
Because utilization of the present invention is provided with the mode of optics color filter, can be under the prerequisite that does not change existing backlight module framework the visible light in the unwanted wavelength coverage of filtering part easily, so can promote the colour gamut of LCD.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the synoptic diagram of LCD preferred embodiment of the present invention;
Fig. 2 is the graph of a relation of a penetrance and wavelength;
Fig. 3 has shown the chromaticity coordinates value of light source among the backlight module embodiment of the present invention;
Fig. 4 is the graph of a relation of a penetrance and wavelength;
Fig. 5 has shown the chromaticity coordinates value of light source among the LCD embodiment of the present invention;
Fig. 6 is the synoptic diagram of another embodiment of LCD of the present invention;
Fig. 7 is the synoptic diagram of another embodiment of LCD of the present invention;
Fig. 8 is the synoptic diagram of another embodiment of LCD of the present invention;
Fig. 9 is the synoptic diagram of another embodiment of LCD of the present invention;
Figure 10 is the synoptic diagram of another embodiment of LCD of the present invention;
Figure 11 has shown the chromaticity coordinates value of light source among the backlight module embodiment of the present invention.
Wherein, Reference numeral:
1: LCD 5: LCD
10: backlight module 12: housing
14: light source generator 15: encapsulating material
16: light guide plate 16a: incidence surface
16b: exiting surface 18: disperser
18a: diffuser plate 18b: prismatic lens
18c: bright enhancement film 20: optics color filter
30: display panels 32: colored filter
50: backlight module 52: housing
54: light source generator 56: disperser
56a: diffuser plate 56b: prismatic lens
56c: bright enhancement film 58: optics color filter
70: display panels 72: colored filter
Embodiment
Please refer to Fig. 1.Fig. 1 is the synoptic diagram of LCD of the present invention and backlight module preferred embodiment thereof.As shown in Figure 1, in the present embodiment, LCD 1 includes display panels 30 and backlight module 10, and wherein backlight module 10 is arranged at the below of display panels 30.Backlight module 10 is a side light type backlight module, required light when display panels 30 display frames to be provided.Backlight module 10 includes housing 12, light source generator 14, light guide plate 16 and disperser 18, wherein light source generator 14 is located at the dual side-edge of housing 12, in order to produce white light light (but light source generator 14 also the apparent brightness demand and only be located at a side of housing 12), light guide plate 16 is located within the housing 12, and the light that the light source generator 14 that is positioned at housing 12 2 sides is produced is injected light guide plate 16 and is reflexed to display panels 30 by two side of light guide plate 16, and disperser 18 is arranged between backlight module 10 and the display panels 30.On the other hand, display panels 30 includes colored filter 32, in order to white light is resolved into ruddiness, green glow and blue light.
In the present embodiment, light source generator 14 uses white light emitting diode, and its surface is provided with encapsulating material 15.Light guide plate 16 has incidence surface 16a and exiting surface 16b, and wherein incidence surface 16a is meant that light that light source generator 14 produces injects the surface of light guide plate 16, and exiting surface 16b is meant that light penetrates the surface of light guide plate 16.The effect of light guide plate 16 is that white light light that light source generator 14 is produced changes direction towards display panels 30 into for utilization by lateral.Disperser 18 can include diffuser plate 18a, prismatic lens 18b, bright enhancement film 18c etc. or other blooming piece, its role is to the utilization factor that light is evenly distributed and improve light.
According to preferred embodiment of the present invention, backlight module 10 can include optics color filter 20, and the white light light of being located at light source generator 14 generations marches on the path of display panels 30.As shown in Figure 1, optics color filter 20 is the position that is arranged between light source generator 14 and the light guide plate 16, say so more accurately before the incidence surface 16a that is positioned at light guide plate 16, and optics color filter 20 can not change the form and aspect of light, produce and do not pass through in the white light light of light guide plate 16 from light source generator 14 and its role is to absorb filtering, be positioned at the light of the part particular range of wavelengths of visible wavelength range, particularly at light between ruddiness and the green wavelength and the light between green glow and blue light wavelength scope, so that ruddiness, green glow and blue light wavelength coverage separately has difference more significantly, increases the colour gamut of the display frame of display panels 30 whereby.
For further specifying the effect of optics color filter 20, please refer to Fig. 2.Fig. 2 is the graph of a relation of a penetrance and wavelength, wherein present embodiment is to use the white light emitting diode light source of triband (3wave), and the curve 1 among Fig. 2 is represented the own penetrance of white light source that backlight module 10 produced and the relation of wavelength, on behalf of optics color filter 20, curve 2 allow the light penetration rate of different wave length and the relation of wavelength, and curve 3 represents white light source that backlight module 10 produced by the penetrance behind the optics color filter 20 and the relation of wavelength.Shown in the curve 1 of Fig. 2, the white light source that backlight module 10 is produced (approximately between 380 nanometer to 780 nanometers) in the scope of visible light roughly has three crests, it is roughly corresponding blue visible light, green visible light and red wavelength of visible light scope respectively, yet two wave trough position of white light source between three crests, visible light still has about 20% penetrance, therefore cause ruddiness, green glow and blue light not to have tangible boundary, can make that under the situation of this white light source of use the colour gamut surface of display frame of display panels 30 is not good.
Shown in the curve 2 of Fig. 2, (particularly at light between ruddiness and the green wavelength and the light between green glow and blue light wavelength scope) has lower penetrance to optics color filter 20 for the light in the particular range of wavelengths, for example in the present embodiment, at the wavelength coverage red-green glow between 565 nanometer to 615 nanometers approximately, and wavelength coverage approximately the blue green light between 473 nanometer to 523 nanometers for the penetrance only about 20% of optics color filter 20; In comparison, the light outside above-mentioned wavelength coverage for the penetrance of optics color filter 20 then up to 50% to 100%.Penetrance and wavelength relationship that what deserves to be explained is optics color filter 20 can be controlled via the dyestuff of selecting unlike material and interpolation, to cooperate different light source kinds, generally speaking can be optionally the penetrance of the visible light of particular range of wavelengths be adjusted to approximately between 10% to 40% and can reaches preferable effect, but its scope is not limited to this.
In view of optics color filter 20 has above-mentioned characteristic, white light source shown in the curve 1 is after penetrating optics color filter 20, major part promptly can be absorbed filterings by optics color filter 20 at the light between ruddiness and the green wavelength and before the light between green glow and the blue light wavelength scope is entering light guide plate 16, and ruddiness, green glow and blue light have significant difference in the white light light of feasible actual ejaculation backlight module 10.Shown in curve 3, obviously reduce in intensity at light between ruddiness and the green wavelength and the light between green glow and blue light wavelength scope, the intensity of light that is positioned at ruddiness, green glow and blue light wavelength scope is then influenced hardly.
Please refer to Fig. 3.Fig. 3 has shown the chromaticity coordinates value of using the triband LED source of optics color filter, wherein includes the measurement that utilizes CIE 1931 and 1,976 two kinds of color matching functions of CIE (ColorMatching Functions) among Fig. 3.As shown in Figure 3, standard according to CIE 1931, (the x of the light source of optics color filter 20 is not set, y) coordinate is respectively: the ruddiness coordinate is (0.6552,0.32503), the green glow coordinate is (0.29701,0.59657), the blue light coordinate is (0.14156,0.08009), and NTCS (%) is 71.08%; And behind the wavelength that utilizes optics color filter 20 absorption portion wave bands, the ruddiness coordinate of the light source of backlight module is that (0.67036,0.30927), green glow coordinate are that (0.29696,0.62755), blue light coordinate are (0.14724,0.06941), and NTCS (%) increases to 80.90%.In addition, standard according to CIE 1976, be not provided with optics color filter 20 light source (u ', v ') coordinate is respectively: the ruddiness coordinate is (0.46884,0.52331), the green glow coordinate is (0.12421,0.56134), the blue light coordinate is (0.15395,0.19598), and NTCS (%) is 83.90%; And behind the wavelength that utilizes optics color filter 20 absorption portion wave bands, the ruddiness coordinate of backlight module light source is that (0.49929,0.51828), green glow coordinate are that (0.11954,0.56839), blue light coordinate are (0.16645,0.17654), and NTCS (%) increases to 98.40%.
Refer again to Fig. 4.Fig. 4 is the graph of a relation of a penetrance and wavelength, wherein present embodiment uses the white light emitting diode light source of two wave bands (2wave), curve 1 is represented the own penetrance of white light source that backlight module 10 produced and the graph of a relation of wavelength, on behalf of optics color filter 20, curve 2 allow the light penetration rate of different wave length and the graph of a relation of wavelength, and curve 3 represents white light source that backlight module 10 produced by the penetrance behind the optics color filter 20 and the graph of a relation of wavelength.Shown in the curve 1 of Fig. 4, the white light source that backlight module 10 is produced (380 nanometer to 780 nanometer) in the scope of visible light roughly has two wave bands, it lays respectively at blue visible light, and in green and the red wavelength of visible light scope, yet white light source is between blue visible light and green wavelength of visible light scope, still has about 15% penetrance, and between green visible light and red wavelength of visible light scope, there is no any boundary, therefore cause ruddiness, green glow and blue light do not have tangible boundary, can make under the situation of this white light source that the colour gamut surface of display frame of display panels 30 is not good using.
Shown in the curve 2 of Fig. 4, optics color filter 20 of the present invention is for the light of (rough Jie's 473 nanometer to 523 nanometers) has a lower penetrance at the light of (rough 565 nanometer to 615 nanometers) between ruddiness and the green wavelength and between green glow and blue light wavelength scope, for example in the present embodiment, at the wavelength coverage red-green glow between 565 nanometer to 615 nanometers approximately, and wavelength coverage approximately the blue green light between 473 nanometer to 523 nanometers for the penetrance only about 20% of optics color filter 20; In comparison, the light outside above-mentioned wavelength coverage for the penetrance of optics color filter 20 then up to 50% to 100%.Penetrance is under the situation different with the dyestuff of interpolation via the selection unlike material, and visual display specification or other demand are adjusted to and are lower than a specific penetrance, and this specific penetrance for example is between 10% to 40%, but is not limited thereto.Whereby, white light source shown in the curve 1 is after penetrating optics color filter 20, major part promptly can be absorbed filterings by optics color filter 20 at the light between ruddiness and the green wavelength and before the light between green glow and the blue light wavelength scope is entering light guide plate 16, and ruddiness, green glow and blue light have significant difference in the white light light of feasible actual ejaculation backlight module 10.Shown in curve 3, obviously reduce in intensity, and make the intensity of the light in ruddiness, green glow and the blue light wavelength scope form three tangible crests at light between ruddiness and the green wavelength and the light between green glow and blue light wavelength scope.
Refer again to Fig. 5.Fig. 5 has shown the chromaticity coordinates value of using two wave band LED light sources of optics color filter, wherein includes the measurement that utilizes CIE 1931 and 1,976 two kinds of color matching functions of CIE among Fig. 5.As shown in Figure 5, standard according to CIE 1931, (the x of the backlight module light source of optics color filter 20 is not set, y) coordinate is respectively: the ruddiness coordinate is (0.63341,0.34619), the green glow coordinate is (0.34387,0.57486), the blue light coordinate is (0.14339,0.06455), and NTCS (%) is 61.02%; And behind the wavelength that utilizes optics color filter 20 absorption portion wave bands, the ruddiness coordinate of backlight module light source is that (0.6504,0.32602), green glow coordinate are that (0.33328,0.60675), blue light coordinate are (0.14774,0.0579), and NTCS (%) is 71.50%.In addition, standard according to CIE 1976, be not provided with optics color filter 20 the backlight module light source (u ', v ') coordinate is respectively: the ruddiness coordinate is (0.43035,0.52921), the green glow coordinate is (0.14934,0.561 72), the blue light coordinate is (0.16445,0.16656), and NTCS (%) is 74.30%; And behind the wavelength that utilizes optics color filter 20 absorption portion wave bands, the ruddiness coordinate of backlight module light source is that (0.46362,0.5229), green glow coordinate are that (0.13866,0.56797), blue light coordinate are (0.17385,0.15329), and its NTCS (%) is 89.50%.
By above-mentioned test result as can be known, but backlight module of the present invention utilizes the light of optics color filter absorption portion particular range of wavelengths, can effectively increase the colour gamut of light source really, improves the display effect of display panels.Be to use light emitting diode as light source generator in the foregoing description, and backlight module is side light type back light module, but application of the present invention is not limited thereto, and other embodiment can be arranged.Below implement sample attitude at other of backlight module of the present invention respectively and be described further, wherein for ease of the similarities and differences of each embodiment relatively, components identical is used identical label mark in part embodiment, and the function of same components repeats no more simultaneously.
Fig. 6 is the synoptic diagram of another embodiment of LCD of the present invention.As shown in Figure 6, in the present embodiment, LCD 1 comprises display panels 30 and backlight module 10 (also being a side light type backlight module).Backlight module 10 is arranged at the below of display panels 30, required light when display panels 30 display frames to be provided.Backlight module 10 includes housing 12, light source generator 14, light guide plate 16, and disperser 18, wherein light source generator 14 is located at the dual side-edge of housing 12 in order to produce light, light guide plate 16 is located within the housing 12, and the light that light source generator 14 is produced is to be injected light guide plate 16 and reflexed to display panels 30 by two sides of light guide plate 16, and disperser 18 is arranged between backlight module 10 and the display panels 30.On the other hand, display panels 30 includes colored filter 32, in order to white light is resolved into ruddiness, green glow and blue light.
In the present embodiment, light source generator 14 also uses white light emitting diode, and be that with the previous embodiment difference optics color filter 20 directly is integrated within the encapsulating material 15 of light emitting diode, but not be attached on the incidence surface 16a of light guide plate 16 as the embodiment as described above.
Fig. 7 is the synoptic diagram of another embodiment of LCD of the present invention.As shown in Figure 7, in the present embodiment, LCD 1 comprises display panels 30 and backlight module 10 (also being a side light type backlight module), and wherein backlight module 10 is arranged at the below of display panels 30, required light when display panels 30 display frames to be provided.In the present embodiment, optics color filter 20 is arranged on the exiting surface 16b of light guide plate 16.The visual required effect in the position of optics color filter 20 and being arranged within the disperser 18, for example be arranged between diffuser plate 18a and the prismatic lens 18b, between prismatic lens 18b and the bright enhancement film 18c, perhaps bright enhancement film 18c is in the face of the surface of display panels 30, even display panels 30 is in the face of the surface of disperser 18, also or to look disperser 18 designs different and be located at the surface of other arbitrary rete.
Please refer to Fig. 8.Fig. 8 is the synoptic diagram of another embodiment of LCD of the present invention.As shown in Figure 8, in the present embodiment, LCD 1 comprises display panels 30 and backlight module 10 (also being a side light type backlight module), and wherein backlight module 10 is arranged at the below of display panels 30, required light when display panels 30 display frames to be provided.In the present embodiment, light source generator 14 uses fluorescent tube, and wherein the kind of fluorescent tube also unrestrictedly can be cathode fluorescent tube, thermal cathode fluorescent tube, external electrode fluorescent lamp pipe etc.In addition, optics color filter 20 is arranged between the diffuser plate 18a and prismatic lens 18b of disperser 18, but the present invention is not as limit.
The backlight module of the various embodiments described above is a side light type back light module, yet backlight module of the present invention also can be direct type backlight module.Please refer to Fig. 9.Fig. 9 is the synoptic diagram of another embodiment of LCD of the present invention.As shown in Figure 9, in the present embodiment, LCD 5 includes display panels 70 and backlight module 50, wherein backlight module 50 is arranged at the below of display panels 70, required light when display panels 70 display frames to be provided, and backlight module 50 is a direct type backlight module.Backlight module 50 includes housing 52, light source generator 54, and disperser 56, wherein light source generator 54 be located within the housing 52 and be positioned at display panels 70 under, in order to produce light, disperser 56 is arranged between backlight module 50 and the display panels 70, and disperser 56 can include members such as diffuser plate 56a, prismatic lens 56b and bright enhancement film 56c.In addition, in the present embodiment, light source generator 54 is a cathode fluorescent tube, but not can be other various light source as limit.In addition, display panels 70 includes colored filter 72, in order to white light is resolved into ruddiness, green glow and blue light.
As shown in Figure 9, in the present embodiment, LCD 5 includes optics color filter 58 in addition, is located between light source generator 54 and the disperser 56, wherein the position of optics color filter 58 is located between the prismatic lens 56b and bright enhancement film 56c in the disperser 56, but the present invention is not as limit.
Please refer to Figure 10.Figure 10 is the synoptic diagram of another embodiment of LCD of the present invention.As shown in figure 10, in the present embodiment, LCD 5 includes display panels 70 and backlight module 50, wherein backlight module 50 is arranged at the below of display panels 70, required light when display panels 70 display frames to be provided, and backlight module 50 is a direct type backlight module.In the present embodiment, optics color filter 58 is arranged at the surface of disperser 56 in the face of display panels 70, but it is used not as limit, face between surface, diffuser plate 56a and the prismatic lens 56b of light source generator 54 and also can be arranged at, or display panels 70 is in the face of the positions such as surface of disperser 56 as diffuser plate 56a.
Refer again to Figure 11.Figure 11 has shown the chromaticity coordinates value of using the cathode fluorescent tube light source of optics color filter, wherein is the measurement that utilizes CIE 1931 color matching functions among Figure 11.As shown in figure 11, standard according to CIE 1931, (the x of the backlight module light source of optics color filter 58 is not set, y) coordinate is respectively: white light coordinates is (0.297,0.338), the ruddiness coordinate is that (0.658,0.331), green glow coordinate are that (0.196,0.690), blue light coordinate are (0.147,0.068), and NTCS (%) is 96.38%; And behind the wavelength that utilizes optics color filter 58 absorption portion wave bands, the white light coordinates of backlight module light source is (0.311,0.331), the ruddiness coordinate is (0.665,0.325), the green glow coordinate is (0.202,0.714), the blue light coordinate is (0.152,0.055), and NTCS (%) increases to 102.60%.
Optics color filter used in the present invention has the characteristic of the light that can absorb particular range of wavelengths, as Fig. 2 and shown in Figure 4.The material of optics color filter can use macromolecular material, for example sclererythrin compound (porphyrins), or other material that is fit to.In addition, the structure of optics color filter is not limited to the simple layer structure that is made of homogenous material, and also can be the sandwich construction that multiple material constitutes.
In sum, backlight module utilization of the present invention is provided with the mode of optics color filter, the visible light in the unwanted wavelength coverage of filtering part easily, and the light source of colour gamut broadness is provided.By behind the colored filter of display panels, can promote the color representation of LCD via the light after the filtration of optics color filter.Though but optics color filter and colored filter light of filter specific wavelengths scope all, both effects are difference to some extent still.With the path that light is advanced, optics color filter of the present invention is arranged at before the colored filter, and the effect of optics color filter is earlier white light source to be done preliminary filtration, to solve the white light source shortcoming in the sky earlier that existing light source generator produces.The optics color filter can't change the form and aspect by light, in other words, light source by the optics color filter is still kept same form and aspect, in other words, the light source by the optics color filter still is white light under the situation of white light source using, and after white light passes the colored filter of display panels subsequently, can be filtered once more, this moment, colored filter just can resolve into white light a plurality of different primitive color lights such as ruddiness, green glow and blue light.
Backlight module of the present invention can be all kinds of backlight modules such as straight-down negative or side-light type, the kind of backlight is not defined as fluorescent tube or light emitting diode yet, and simultaneously also the structural design of visual Backlight module and liquid crystal display is different and be arranged at the position on the light course between light source generator and the display panels in the position of optics color filter.In addition, the material of optics color filter also can be organic material or inorganic material, its structure also is not limited to individual layer and can be composite bed, simultaneously more can be by adding the penetrance of the further control of modes such as dyestuff or doping, to reach preferable color control effect for the specific wavelength light in the visible wavelength range.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (25)
1. backlight module, is characterized in that this backlight module comprises in order to provide a display panels used light source:
One housing;
At least one light source generator is located within this housing, in order to produce white light light; And
One optics color filter, being located at the white light light that this light source generator produces marches on the path of this display panels, in order to be positioned at the part specific wavelength of visible wavelength range in this white light light of filtering, wherein the form and aspect of this white light light in this white light light by still being same form and aspect behind this optics color filter.
2. backlight module according to claim 1 is characterized in that, this particular range of wavelengths is the part wavelength coverage between blue light wavelength scope and the green wavelength.
3. backlight module according to claim 2 is characterized in that, this particular range of wavelengths is between 473 nanometer to 523 nanometers.
4. backlight module according to claim 1 is characterized in that, this particular range of wavelengths is the part wavelength coverage between green wavelength and the red light wavelength scope.
5. backlight module according to claim 4 is characterized in that, this particular range of wavelengths is between 565 nanometer to 615 nanometers.
6. backlight module according to claim 1, it is characterized in that, this backlight module includes a light guide plate, be arranged within this housing, this at least one light source generator is positioned at least one side of this light guide plate, and the one side that white light light is injected this light guide plate is an incidence surface, is exiting surface and white light light penetrates the one side of this light guide plate.
7. backlight module according to claim 6 is characterized in that this optics color filter is arranged at the incidence surface of this light guide plate.
8. backlight module according to claim 6 is characterized in that this optics color filter is arranged at the exiting surface of this light guide plate.
9. backlight module according to claim 1 is characterized in that, this at least one light source generator be arranged at this display panels under.
10. backlight module according to claim 1 is characterized in that this light source generator comprises a fluorescent tube.
11. backlight module according to claim 1 is characterized in that, this light source generator comprises a light emitting diode.
12. backlight module according to claim 11 is characterized in that, this light-emitting diode comprises an encapsulating material layer, and this optics color filter system is integrated within this encapsulating material layer.
13. a LCD is characterized in that, comprises:
One display panels comprises a colored filter; And
One backlight module is arranged at the below of this display panels, and in order to provide this display panels used light source, this backlight module comprises:
One housing;
At least one light source generator is located within this housing, in order to produce white light light; And
One optics color filter, the white light light of being located at this light source generator generation marches on the path of this display panels, and this optics color filter has a specific penetrance for the light in the part particular range of wavelengths in the visible wavelength range.
14. LCD according to claim 13 is characterized in that, this specific penetrance is between 10% to 40%.
15. LCD according to claim 13 is characterized in that, this particular range of wavelengths is the part wavelength coverage between blue light wavelength scope and the green wavelength.
16. LCD according to claim 15 is characterized in that, this particular range of wavelengths is between 473 nanometer to 523 nanometers.
17. LCD according to claim 13 is characterized in that, this particular range of wavelengths is the part wavelength coverage between green wavelength and the red light wavelength scope.
18. LCD according to claim 17 is characterized in that, this particular range of wavelengths is in fact between 565 nanometer to 615 nanometers.
19. LCD according to claim 13, it is characterized in that, this backlight module includes a light guide plate and is arranged within this housing, this at least one light source generator is positioned at least one side of this light guide plate, and the one side that white light light is injected this light guide plate is an incidence surface, is exiting surface and white light light penetrates the one side of this light guide plate.
20. LCD according to claim 19 is characterized in that, this optics color filter is arranged at the incidence surface of this light guide plate.
21. LCD according to claim 19 is characterized in that, this optics color filter is arranged at the exiting surface of this light guide plate.
22. LCD according to claim 13 is characterized in that, at least one light source generator be arranged at this display panels under.
23. LCD according to claim 13, other includes a disperser and is arranged between this backlight module and this display panels.
24. LCD according to claim 23 is characterized in that, this optics color filter is arranged within this disperser.
25. LCD according to claim 23 is characterized in that, this optics color filter is arranged between this disperser and this display panels.
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| CNA2008100070899A CN101221319A (en) | 2008-02-02 | 2008-02-02 | LCD and backlight module thereof |
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| CNA2008100070899A CN101221319A (en) | 2008-02-02 | 2008-02-02 | LCD and backlight module thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372873A (en) * | 2015-11-10 | 2016-03-02 | 青岛海信电器股份有限公司 | Backlight module and display device |
| WO2017143735A1 (en) * | 2016-02-26 | 2017-08-31 | Boe Technology Group Co., Ltd. | Backlight assembly and display apparatus |
| CN107461653A (en) * | 2012-04-11 | 2017-12-12 | 索尼公司 | Luminescence unit, display and lighting device |
-
2008
- 2008-02-02 CN CNA2008100070899A patent/CN101221319A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461653A (en) * | 2012-04-11 | 2017-12-12 | 索尼公司 | Luminescence unit, display and lighting device |
| CN107461653B (en) * | 2012-04-11 | 2020-10-20 | 索尼公司 | Light emitting unit, display, and lighting device |
| CN105372873A (en) * | 2015-11-10 | 2016-03-02 | 青岛海信电器股份有限公司 | Backlight module and display device |
| WO2017143735A1 (en) * | 2016-02-26 | 2017-08-31 | Boe Technology Group Co., Ltd. | Backlight assembly and display apparatus |
| EP3420406A4 (en) * | 2016-02-26 | 2019-08-28 | BOE Technology Group Co., Ltd. | Backlight assembly and display apparatus |
| US10473976B2 (en) | 2016-02-26 | 2019-11-12 | Boe Technology Group Co., Ltd. | Backlight assembly and display apparatus |
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Open date: 20080716 |