CN101364002B - LCD device, backlight module thereof and display method - Google Patents
LCD device, backlight module thereof and display method Download PDFInfo
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- CN101364002B CN101364002B CN 200710141126 CN200710141126A CN101364002B CN 101364002 B CN101364002 B CN 101364002B CN 200710141126 CN200710141126 CN 200710141126 CN 200710141126 A CN200710141126 A CN 200710141126A CN 101364002 B CN101364002 B CN 101364002B
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- 238000000034 method Methods 0.000 title abstract description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 101
- 230000010287 polarization Effects 0.000 claims abstract description 55
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- 239000000463 material Substances 0.000 description 4
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Abstract
The invention provides a liquid crystal display device as well as a backlight module thereof and a display method. The backlight module at least includes a lighting component, a polarization component and a modulation component. The lighting component is used for providing a light source. A first polarized light is formed after the light source passes through the polarization component. The modulation component is provided with a plurality of modulation areas. Each modulation area corresponds to one modulation direction, and a plurality of second polarized lights are formed after the first polarized light passes through the modulation areas. The second polarized lights respectively correspond to the modulation directions, wherein the modulation directions are not identical.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator and backlight module thereof and display packing, and relate in particular to a kind of with modulation assembly collocation polarisation assembly so that light source presents liquid crystal indicator and backlight module and the display packing of different shading values when entering display panel.
Background technology
Show that science and technology makes rapid progress, bring people visually unlimited enjoyment.Especially liquid crystal indicator has that volume is little, lightweight, image quality is high and the advantage such as the life-span is long, so that liquid crystal indicator is applied in the various electronic products such as Digital Television, computer screen, notebook computer, mobile phone or camera etc. at large.
Please refer to Fig. 1, it illustrates the synoptic diagram of traditional liquid crystal indicator 900.Liquid crystal indicator 900 comprises backlight module 910, display panel 920, the first Polarizer 930 and the second Polarizer 940.Backlight module 910 has exiting surface 910a, and backlight module 910 comprises luminescence component 911.Luminescence component 911 is in order to provide light source.Display panel 920 is arranged at the side of exiting surface 910a.The first Polarizer 930 is arranged at a side of display panel 920 adjacent back optical modules 910, and the second Polarizer 940 is arranged at the side away from backlight module 910.
Please refer to Fig. 2, it illustrates the synoptic diagram of the display panel 920 of Fig. 1.Display panel 920 comprises colored filter substrate 921, thin film transistor base plate 922 and liquid crystal layer 923, colored filter substrate 921 and thin film transistor base plate clamping liquid crystal layer 923 about in the of 922.Display panel 920 has a plurality of pixels.The common electrode film 921a that liquid crystal molecule in each pixel sees through on thin film transistor base plate 922 and the colored filter substrate 921 controls its anglec of rotation.
After the light source of luminescence component 911 passes through the first Polarizer 930, form polarized light L91.When polarized light L91 passed through display panel 920, polarized light L91 saw through the liquid crystal molecule rotated and colored filter substrate 921 and forms a plurality of primitive color light L92 of different polarization direction.Then, the primitive color light L92 of different polarization direction is when passing through the second Polarizer 940, and each primitive color light L92 is subject to the degree difference that the second Polarizer 940 stops, and forms the different primitive color light L92 of depth degree.The different primitive color light L92 of depth degree that each pixel penetrates then forms a width of cloth picture at last.
Yet, in traditional liquid crystal indicator 900, still have the phenomenon of dark attitude light leak.In dark picture, light source still has a little light source and exposes, and present light gray under the stopping of display panel 920 and the second Polarizer 940.So that the bright dark difference between dark picture and the bright picture is little, and reduce the contrast of picture.Therefore, how to provide solution, solve above-mentioned variety of problems, be one of present important directions of researching and developing.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of liquid crystal indicator and backlight module and display packing, it utilizes the design of modulation assembly collocation polarisation assembly, cause light source when entering display panel, to present different shading values so that liquid crystal indicator and backlight module thereof and display packing have the contrast height, effectively utilize light source, increase color depth, easily control, the cost of material is low, can avoid the problem of bright concealed wire and improve the advantage of dark attitude light leak.
According to one object of the present invention, a kind of backlight module is proposed, comprise at least:
Luminescence component is used for providing light source;
Polarisation assembly, described light source form the first polarized light after passing through described polarisation assembly; And
The modulation assembly has a plurality of modulations zone, and each described modulation zone is a corresponding modulation direction respectively, after described the first polarized light passes through described a plurality of modulations zone, form a plurality of the second polarized lights, each second polarized light corresponds respectively to a modulation direction, and described modulation assembly also comprises:
First substrate has the common electrode film;
Second substrate has a plurality of transistors, and each described transistor is corresponding to one in described a plurality of modulations zone; And
The modulation liquid crystal layer, be arranged between described first substrate and the described second substrate, described common electrode film and described a plurality of transistor turn in order to the liquid crystal of controlling described modulation liquid crystal layer, so that each described modulation zone is corresponding to a modulation direction, wherein described modulation direction corresponding to each modulation zone is incomplete same.
Another purpose according to the present invention proposes a kind of liquid crystal indicator, comprising:
Backlight module has exiting surface, and described backlight module comprises:
Luminescence component is used for providing light source;
Polarisation assembly, described light source form the first polarized light after passing through described polarisation assembly; And
The modulation assembly, has a plurality of modulations zone, each described modulation zone is a corresponding modulation direction respectively, after described the first polarized light passes through described a plurality of modulations zone, form a plurality of the second polarized lights and penetrated by described exiting surface, each second polarized light corresponds respectively to a modulation direction, and described modulation assembly also comprises:
First substrate has the common electrode film;
Second substrate has a plurality of transistors, and each described transistor is corresponding to one in described a plurality of modulations zone; And
The modulation liquid crystal layer, be arranged between described first substrate and the described second substrate, described common electrode film and described a plurality of transistor turn in order to the liquid crystal of controlling described modulation liquid crystal layer, so that each described modulation zone is corresponding to a modulation direction, wherein described modulation direction corresponding to each modulation zone is incomplete same;
Display panel is arranged at a side of described exiting surface;
The first Polarizer is arranged at the side that described display panel is close to described backlight module, and described the first Polarizer has the first polarizing axis; And
The second Polarizer is arranged at described display panel away from a side of described backlight module;
Wherein, described modulation direction and described the first polarizing axis are incomplete same.
According to still a further object of the present invention, a kind of display packing is proposed, be used for improving the picture contrast of liquid crystal indicator, described liquid crystal indicator comprises backlight module, display panel, the first Polarizer and the second Polarizer, wherein said the first Polarizer and described the second Polarizer are arranged at respectively the contiguous both sides that reach away from described backlight module of described display panel, described the first Polarizer has the first polarizing axis, described backlight module also has the modulation assembly, described modulation assembly has a plurality of modulations zone, each described modulation zone is a corresponding polarization modulation direction respectively, and described display packing comprises:
(a) the described a plurality of polarization modulation directions of control are so that the described polarization modulation direction of each modulation zone correspondence is incomplete same;
Obtain the picture gray-scale value corresponding with one of them modulation zone, described a plurality of modulations zone;
Judge that whether described picture gray-scale value is less than default gray-scale value;
If described picture gray-scale value, is then controlled the described polarization modulation perpendicular direction in described modulation zone less than described default gray-scale value in described the first polarizing axis; And
Otherwise the described polarization modulation direction of controlling described modulation zone is parallel to the angle of described the first polarizing axis or relatively described the first polarizing axis [90-(described picture gray-scale value/255) * 90];
(b) light the luminescence component of described backlight module, so that the light source of injecting described display panel to be provided, wherein when described light source entered described display panel, the brightness of the described light source in corresponding described a plurality of modulations zone was incomplete same.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended diagram, elaborate.
Description of drawings
Fig. 1 illustrates the synoptic diagram of traditional liquid crystal indicator;
Fig. 2 illustrates the synoptic diagram of the display panel of Fig. 1;
Fig. 3 illustrates the synoptic diagram according to the liquid crystal indicator of first embodiment of the invention;
Fig. 4 illustrates the synoptic diagram of the modulation assembly of Fig. 3;
Fig. 5 illustrates the synoptic diagram of the display panel of Fig. 3;
Fig. 6 illustrates the key step process flow diagram according to display packing of the present invention;
Fig. 7 illustrates the control of first embodiment of the invention and transfers nyctitropic algorithm steps process flow diagram;
Fig. 8 illustrates the calcspar according to the liquid crystal indicator of first embodiment of the invention;
Fig. 9 illustrates the synoptic diagram of the liquid crystal indicator of the second embodiment;
Figure 10 illustrates the synoptic diagram of the liquid crystal indicator of the 3rd embodiment
Figure 11 illustrates according to the control of fourth embodiment of the invention and transfers nyctitropic algorithm steps process flow diagram;
Figure 12 illustrates the synoptic diagram according to the liquid crystal indicator of fifth embodiment of the invention; And
Figure 13 illustrates the calcspar according to the liquid crystal device of fifth embodiment of the invention.
[primary clustering symbol description]
100,200,300,500: liquid crystal indicator
110,210,310: backlight module
110a: exiting surface
111: luminescence component
112,212,312: the polarisation assembly
113,213,313: brightness enhancement film
114: the line Polarizer
214: line modulation plate
215,315: the rotatory polarization plate
116,316: the modulation assembly
116a: modulation zone
117: first substrate
117a: common electrode film
118: second substrate
118a: data line
118b: sweep trace
118c: transistor
119: the modulation liquid crystal layer
120: display panel
120a: pixel
121: colored filter substrate
122: thin film transistor base plate
123: show liquid crystal layer
130: the first Polarizers
140: the second Polarizers
150,550: display processing unit
160,560: the display timing generator controller
170: time schedule controller backlight
181: show the data line control module
182: reading scan line traffic control unit
191: backlight data line traffic control unit
192: sweep trace control module backlight
900: liquid crystal indicator
910: backlight module
910a: exiting surface
911: luminescence component
920: display panel
921: colored filter substrate
921a: common electrode film
922: thin film transistor base plate
923: liquid crystal layer
930: the first Polarizers
940: the second Polarizers
C1: the first modulation direction
C2: the second modulation direction
C130: the first polarizing axis
C140: the second polarizing axis
L11, L13: the first polarized light
L12: the second polarized light
L91: polarized light
L92: primitive color light
R: red sub-pixel
G: green sub-pixels
B: blue subpixels
Embodiment
The first embodiment
Please refer to Fig. 3, it illustrates the synoptic diagram according to the liquid crystal indicator 100 of first embodiment of the invention.Liquid crystal indicator 100 comprises backlight module 110, display panel 120, the first Polarizer 130 and the second Polarizer 140.Backlight module 110 has exiting surface 110a.Backlight module 110 comprises luminescence component 111, polarisation assembly 112 and modulation assembly 116.Luminescence component 111 is in order to provide light source.After light source passes through polarisation assembly 112, form the first polarized light L11.Modulation assembly 116 has a plurality of modulations zone 116a.Corresponding modulation direction C1 or the C2 of each modulation zone 116a.The first polarized light L11 forms a plurality of the second polarized light L12, and is penetrated by exiting surface 110a after passing through these modulation zones 116a.These second polarized lights L12 corresponds respectively to these modulation direction C1 or C2, and wherein these modulation direction C1 or C2 are incomplete same.In the present embodiment, the modulation direction comprises the first modulation direction C1 and the second modulation direction C2.The first modulation direction C1 is in fact perpendicular to the second modulation direction C2.
As shown in Figure 3, in the present embodiment, polarisation assembly 112 comprises line Polarizer 114.Behind the light source ruler Polarizer 114, form the first polarized light L11 of linear polarization.In addition, line Polarizer 114 also has brightness enhancement film 113.Brightness enhancement film 113 can reflect can't ruler Polarizer 114 light source, and after changing its polarization state, the ruler Polarizer 114 again.Therefore the intensity that can avoid line Polarizer 114 to cut down light source.
Please refer to Fig. 4, it illustrates the synoptic diagram of the modulation assembly 116 of Fig. 3.Modulation assembly 116 comprises first substrate 117, second substrate 118 and modulation liquid crystal layer 119.First substrate 117 has common electrode film 117a.Second substrate 118 has many data line 118a, multi-strip scanning line 118b and a plurality of transistor 118c, and each transistor 118c is corresponding to one of them modulation zone 116a.Modulation liquid crystal layer 119 is arranged between first substrate 117 and the second substrate 118.Common electrode film 117a and transistor 118c turn in order to the liquid crystal of controlling modulation liquid crystal layer 119, so that each modulation zone 116a is corresponding to modulation direction C1 or C2.As shown in Figure 4, after the first polarized light L11 passes through modulation assembly 116, form a plurality of the second polarized light L12.These second polarized lights L12 corresponds respectively to the first modulation direction C1 or the second modulation direction C2.
As shown in Figure 3, wherein modulation assembly 116 is corresponding to 1/2 wavelength phase differential.When light source passes through polarisation assembly 112, form the first polarized light L11 of linear polarization.Then, after the first polarized light L11 of linear polarization passes through 1/2 wavelength phase differential modulation assembly 116, still form the second polarized light L12 of linear polarization.
As shown in Figure 3, since corresponding to the second polarized light L12 of the first modulation direction C1 perpendicular to the first polarizing axis C130, so that can't pass through the first Polarizer 130 corresponding to the second polarized light L12 of the first modulation direction C1.Otherwise, be parallel to the first polarizing axis C130 corresponding to the second polarized light L12 of the second modulation direction C2, so that can successfully pass through the first Polarizer 130 corresponding to the second polarized light L12 of the second modulation direction C2.
Please refer to Fig. 5, it illustrates the synoptic diagram of the display panel 120 of Fig. 3.Display panel 120 comprises colored filter substrate 121, thin film transistor base plate 122 and shows liquid crystal layer 123.Colored filter substrate 121 and thin film transistor base plate be clamping demonstration liquid crystal layer 123 about in the of 122.Display panel 120 has a plurality of pixel 120a, and each modulation zone 116a is corresponding to wherein three pixel 120a, for example red sub-pixel (Sub-pixel) R, green sub-pixels G and blue subpixels B.
As shown in Figure 3, owing to can't pass through the first Polarizer 130 corresponding to the second polarized light L12 of the first modulation direction C1, and can pass through smoothly the first Polarizer 130 corresponding to the second polarized light L12 of the second modulation direction C2.Therefore, the received light-source brightness of each pixel 120a of display panel 120 is incomplete same.
In addition, after thin film transistor base plate 122 drives the liquid crystal molecule rotation that shows liquid crystal layers 123, also can pass through the second Polarizer 140 corresponding to the second polarized light L12 of the second modulation direction C2.Wherein, pass through what of the second Polarizer 140 corresponding to the second polarized light L12 of the second modulation direction C2, depend on the degree that the liquid crystal molecule that shows liquid crystal layer rotates.
Thus, when a certain pixel 120a wants to present darker picture brightness, see through the control of modulation direction C1 or C2, can make the light-source brightness of injecting pixel 120a lower, and present darker picture brightness.When a certain pixel 120a wants to present brighter picture brightness, see through the control of modulation direction C1 or C2, can make the brightness of the light source of injecting pixel 120a higher, and present brighter picture brightness.Therefore, the bright dark contrast that presents of whole picture is considerably high.
Please be simultaneously with reference to Fig. 6 and Fig. 3, Fig. 6 illustrates the key step process flow diagram according to display packing of the present invention.Display packing of the present invention may further comprise the steps at least: at first, in the step S1 of Fig. 6, control each modulation direction C1 or C2, so that modulation direction C1 or C2 are incomplete same.Then, in the step S2 of Fig. 6, light the light source of backlight module 110, and inject display panel 120.When light source entered display panel 120, the brightness of corresponding these modulation zones 116a was incomplete same.
Please refer to Fig. 7, it illustrates the control modulation direction C1 of first embodiment of the invention or the algorithm steps process flow diagram of C2.The step S1 of Fig. 6 is further comprising the steps of.At first, in step S11, obtain the picture gray-scale value of corresponding modulation zone 116a.Then, in step S12, judge that the picture gray-scale value is whether less than default gray-scale value (for example 32).If then enter step S13, then enter if not step S14.In step S13, if the picture gray-scale value less than default gray-scale value, represents that then picture to be presented is darker.The liquid crystal of modulation assembly 116 control modulation liquid crystal layers 119 turns to, so that the modulation direction C1 of modulation zone 116a is perpendicular to the first polarizing axis C130.At this moment, the second polarized light L12 can't pass through the first Polarizer 130, and presents dark picture.In step S14, if the picture gray-scale value, represents then that the picture of wanting to present is brighter more than or equal to default gray-scale value.The liquid crystal of modulation assembly 116 control modulation liquid crystal layers 119 turns to, so that the modulation direction C2 in modulation zone 116 is parallel to the first polarizing axis C130.At this moment, the second polarized light L12 can pass through the first Polarizer 130 smoothly, and presents bright picture.
Please refer to Fig. 8, it illustrates the calcspar according to the liquid crystal indicator 100 of first embodiment of the invention.Liquid crystal indicator 100 also comprises display processing unit 150, display timing generator controller 160 and time schedule controller backlight 170.In the present embodiment, the program of signal processing is positioned at display processing unit 150.Display timing generator controller 160 is electrically connected to display processing unit 150 and display panel 120, in order to receiving picture data, and according to the dynamic control display panel 120 of time series.Wherein, display timing generator controller 160 is shown among Fig. 5 by the thin film transistor base plate 122(that shows data line control module 181 and reading scan line traffic control unit 182 control display panels 120).Time schedule controller 170 backlight is electrically connected to display processing unit 150 and backlight module 110, in order to receiving the same picture data, and synchronously dynamically controls backlight module 110 according to same time series with display timing generator controller 160.Wherein time schedule controller 170 backlight is shown among Fig. 4 by the second substrate 118(of backlight data line traffic control unit 191 and sweep trace control module backlight 192 control modulation assemblies 160).
As mentioned above, the liquid crystal indicator 100 of present embodiment and backlight module 110 thereof and display packing can solve all traditionally problems by above design.
The second embodiment
After light source passed through rotatory polarization plate 215, light source formed the first polarized light L11 of circular polarization state.Simultaneously, brightness enhancement film 213 can reflect the light source that can't pass through rotatory polarization plate 215, and after changing its polarization state, again passes through rotatory polarization plate 215.Therefore the intensity that can avoid rotatory polarization plate 215 to cut down light source.
Then, the first polarized light L11 of circular polarization state also behind ruler modulation plate 214, forms the first polarized light L11 of linear polarization.
Then, the first polarized light L11 can reach purpose of the present invention after sequentially passing through modulation assembly 116, the first Polarizer 130, display panel 120 and the second Polarizer 140 again.
The 3rd embodiment
After light source passed through rotatory polarization plate 315, light source formed the first polarized light L31 of circular polarization state 315.Simultaneously, brightness enhancement film 313 can reflect the light source that can't pass through rotatory polarization plate 315, and after changing its polarization state, again passes through rotatory polarization plate 315.Therefore the intensity that can avoid rotatory polarization plate 315 to cut down light source.
Then, the first polarized light L31 of circular polarization state also passes through the modulation assembly 316 of 1/4 wavelength or 3/4 wavelength phase differential and forms the second polarized light L12 of linear polarization.
Then, the second polarized light L12 can reach purpose of the present invention after sequentially passing through the first Polarizer 130, display panel 120 and the second Polarizer 140 again.
The 4th embodiment
Liquid crystal indicator 100 differences of the liquid crystal indicator of present embodiment and the first embodiment are the nyctitropic algorithm steps of control accent, and all the other something in common are not being given unnecessary details.Please be simultaneously with reference to Figure 11 and Fig. 3, Figure 11 illustrates according to the control of fourth embodiment of the invention and transfers nyctitropic algorithm steps process flow diagram.At first, in step S41, obtain the picture gray-scale value of corresponding modulation zone 116a.Then, in step S42, judge that the picture gray-scale value is whether less than default gray-scale value (for example 32).If then enter step S43, then enter if not step S44.In step S43, if the picture gray-scale value less than default gray-scale value, then the liquid crystal of modulation assembly 116 control modulation liquid crystal layers 119 turns to, so that the modulation perpendicular direction of modulation zone 116a is in the first polarizing axis C130.At this moment, the second polarized light L12 can't pass through the first Polarizer 130, and presents dark picture.In step S44, the liquid crystal of modulation assembly 116 control modulation liquid crystal layers 119 turns to, with the modulation direction rotation of control modulation zone 116a to relative the first polarizing axis C130[90-(picture gray-scale value/255) * 90] angle.At this moment, the second polarized light L12 can partly pass through the first Polarizer C130, and presents the GTG shading value.
In addition, the control of present embodiment transfers nyctitropic algorithm steps not only to can be applicable on the structure of liquid crystal indicator 100 of the first embodiment, also can be applicable on the liquid crystal indicator 300 of the liquid crystal indicator 200 of the second embodiment or the 3rd embodiment.
The 5th embodiment
The liquid crystal indicator disclosed according to above embodiment is although each modulation zone is corresponding to three pixels.Yet each modulation zone also can be corresponding to one of them two or more pixel.So long as by the design of modulation assembly and polarisation assembly, and reach the purpose that improves picture contrast, neither disengaging technical scope of the present invention.
The liquid crystal indicator that the above embodiment of the present invention is disclosed and backlight module thereof and display packing are utilized the design of modulation assembly collocation polarisation assembly, cause light source when entering display panel, to present different brightness, so that liquid crystal indicator and backlight module thereof and display packing have following advantages:
The first, contrast is high: the present invention controls each modulation direction by the modulation assembly, after light source passes through the modulation assembly, presents different shading values when entering display panel.So that the picture of liquid crystal indicator can obtain the contrast up to 100000:1.
The second, effectively utilize light source: polarisation assembly of the present invention also has brightness enhancement film, all can pass through the polarisation assembly so that can't pass through all light sources.Not only can the not detract brightness of light source more effectively utilizes all light sources, and light source is concentrated on the direction of wanting polarization.
Three, increase color depth: each pixel is on gray scale variation, and except the gray scale of display panel, the light and shade that also can pass through the light source in corresponding each modulation zone changes, and has the effect that color depth doubles.Especially the modulation assembly of the 4th embodiment can provide the liquid crystal of multiple modulation liquid crystal layer to turn to more, so that the suitable height of the picture color degree of depth that liquid crystal indicator presents.For example, if display panel has the color depth on 255 rank and liquid crystal that the modulation assembly has 15 rank turns to, then liquid crystal indicator can present the color depth on 255*15 rank.
Four, easily control: the control method of modulation assembly of the present invention is identical with the control method of display panel.Only need according to same picture data and the dynamic control display panel of same time series and backlight get final product, and do not need the circuit design of additional complexity, considerably make things convenient for.
Five, the cost of material is low: modulation assembly of the present invention comprises first substrate, second substrate and modulation liquid crystal layer.The structure of modulation assembly and the structure of display panel are similar, and its material is obtained easily and do not needed the extra new production line of building.So that the present invention can reach purpose of the present invention under low material cost.
Six, can avoid the problem of bright concealed wire: in modulation assembly of the present invention, need to baffle region every between bright dark space, only not need to turn to the light source that can reach different brightness by the liquid crystal of control modulation liquid crystal layer between the modulation zone.Therefore do not have the problem of the bright concealed wire that dividing plate may cause.
Seven, improve dark attitude light leak: by design of the present invention, wanting to present dark picture place, namely with modulation assembly first Polarizer of arranging in pairs or groups, stopping that light source enters display panel.So that not having the phenomenon of any light leak, dark picture do not produce.
In sum, although the present invention discloses as above with preferred embodiment, so it is not to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, can make various changes and retouching.Therefore, protection scope of the present invention is as the criterion when looking claims.
Claims (14)
1. backlight module comprises at least:
Luminescence component is used for providing light source;
Polarisation assembly, described light source form the first polarized light after passing through described polarisation assembly; And
The modulation assembly has a plurality of modulations zone, and each described modulation zone is a corresponding modulation direction respectively, after described the first polarized light passes through described a plurality of modulations zone, form a plurality of the second polarized lights, each second polarized light corresponds respectively to a modulation direction, and described modulation assembly also comprises:
First substrate has the common electrode film;
Second substrate has a plurality of transistors, and each described transistor is corresponding to one in described a plurality of modulations zone; And
The modulation liquid crystal layer, be arranged between described first substrate and the described second substrate, described common electrode film and described a plurality of transistor turn in order to the liquid crystal of controlling described modulation liquid crystal layer, so that each described modulation zone is corresponding to a modulation direction, wherein described modulation direction corresponding to each modulation zone is incomplete same.
2. backlight module as claimed in claim 1, described modulation direction comprises the first modulation direction and the second modulation direction, and described the first modulation direction and the second modulation direction respectively are a plurality of, and described a plurality of the first modulation perpendicular directions are in described a plurality of the second modulation directions.
3. backlight module as claimed in claim 1, wherein said the first polarized light is linear polarization, described modulation assembly is corresponding to 1/2 wavelength phase differential.
4. backlight module as claimed in claim 3, wherein said polarisation assembly comprises:
The line Polarizer is used for making described light source to form described first polarized light of linear polarization.
5. backlight module as claimed in claim 3, wherein said polarisation assembly comprises:
The rotatory polarization plate is used for making described light source to form described first polarized light of circular polarization state; And
Line modulation plate is for described first polarized light of described the first polarized light formation linear polarization that makes described circular polarization state.
6. backlight module as claimed in claim 1, wherein said the first polarized light is circular polarization state, described modulation assembly is corresponding to 1/4 wavelength or 3/4 wavelength phase differential.
7. backlight module as claimed in claim 6, wherein said polarisation assembly comprises:
The rotatory polarization plate is used for making described light source to form described first polarized light of circular polarization state.
8. backlight module as claimed in claim 1, wherein said backlight module is applied to display panel, and described display panel has a plurality of pixels, and each described modulation zone is corresponding to one in described a plurality of pixels.
9. backlight module as claimed in claim 1, wherein said backlight module is corresponding to display panel, and described display panel has a plurality of pixels, and each described modulation zone is corresponding to the part in described a plurality of pixels.
10. liquid crystal indicator comprises:
Backlight module has exiting surface, and described backlight module comprises:
Luminescence component is used for providing light source;
Polarisation assembly, described light source form the first polarized light after passing through described polarisation assembly; And
The modulation assembly, has a plurality of modulations zone, each described modulation zone is a corresponding modulation direction respectively, after described the first polarized light passes through described a plurality of modulations zone, form a plurality of the second polarized lights and penetrated by described exiting surface, each second polarized light corresponds respectively to a modulation direction, and described modulation assembly also comprises:
First substrate has the common electrode film;
Second substrate has a plurality of transistors, and each described transistor is corresponding to one in described a plurality of modulations zone; And
The modulation liquid crystal layer, be arranged between described first substrate and the described second substrate, described common electrode film and described a plurality of transistor turn in order to the liquid crystal of controlling described modulation liquid crystal layer, so that each described modulation zone is corresponding to a modulation direction, wherein described modulation direction corresponding to each modulation zone is incomplete same;
Display panel is arranged at a side of described exiting surface;
The first Polarizer is arranged at the side that described display panel is close to described backlight module, and described the first Polarizer has the first polarizing axis; And
The second Polarizer is arranged at described display panel away from a side of described backlight module;
Wherein, described modulation direction and described the first polarizing axis are incomplete same.
11. liquid crystal indicator as claimed in claim 10, wherein the described modulation perpendicular direction of part is in described the first polarizing axis, and the described modulation direction of part is parallel to described the first polarizing axis.
12. display packing, be used for improving the picture contrast of liquid crystal indicator, described liquid crystal indicator comprises backlight module, display panel, the first Polarizer and the second Polarizer, wherein said the first Polarizer and described the second Polarizer are arranged at respectively the contiguous both sides that reach away from described backlight module of described display panel, described the first Polarizer has the first polarizing axis, described backlight module also has the modulation assembly, described modulation assembly has a plurality of modulations zone, each described modulation zone is a corresponding polarization modulation direction respectively, and described display packing comprises:
(a) the described a plurality of polarization modulation directions of control are so that the described polarization modulation direction of each modulation zone correspondence is incomplete same;
Obtain the picture gray-scale value corresponding with one of them modulation zone, described a plurality of modulations zone;
Judge that whether described picture gray-scale value is less than default gray-scale value;
If described picture gray-scale value, is then controlled the described polarization modulation perpendicular direction in described modulation zone less than described default gray-scale value in described the first polarizing axis; And
Otherwise the described polarization modulation direction of controlling described modulation zone is parallel to the angle of described the first polarizing axis or relatively described the first polarizing axis [90-(described picture gray-scale value/255) * 90];
(b) light the luminescence component of described backlight module, so that the light source of injecting described display panel to be provided, wherein when described light source entered described display panel, the brightness of the described light source in corresponding described a plurality of modulations zone was incomplete same.
13. display packing as claimed in claim 12, wherein said step (a) comprising:
The described a plurality of polarization modulation perpendicular directions of control section are in described the first polarizing axis; And
The described a plurality of polarization modulation directions of control section are parallel to described the first polarizing axis.
14. display packing as claimed in claim 12, wherein said modulation assembly comprises the modulation liquid crystal layer, and described step (a) comprising:
The liquid crystal of controlling described modulation liquid crystal layer turns to, so that the described polarization modulation direction of each modulation zone correspondence is incomplete same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710141126 CN101364002B (en) | 2007-08-08 | 2007-08-08 | LCD device, backlight module thereof and display method |
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| CN 200710141126 CN101364002B (en) | 2007-08-08 | 2007-08-08 | LCD device, backlight module thereof and display method |
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| CN101364002B true CN101364002B (en) | 2013-10-16 |
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| KR101408501B1 (en) * | 2010-01-12 | 2014-06-17 | 가부시키가이샤 니콘 | Display device and display method |
| JP2018200413A (en) * | 2017-05-29 | 2018-12-20 | 住友化学株式会社 | Set of polarizing plates and liquid crystal panel |
| CN116184719A (en) * | 2023-03-06 | 2023-05-30 | 业成科技（成都）有限公司 | Local dimming device and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608218A (en) * | 2001-11-19 | 2005-04-20 | 新日本石油株式会社 | Circular polarizing plate and liquid crystal display device |
| CN1628262A (en) * | 2002-06-18 | 2005-06-15 | 三星电子株式会社 | Liquid crystal display for performing time divisional color display, method of driving the same backlight unit for liquid crystal display |
| CN1258112C (en) * | 2002-11-22 | 2006-05-31 | 精工爱普生株式会社 | LCD device and electronic apparatus |
| CN1982976A (en) * | 2005-12-13 | 2007-06-20 | 奇美电子股份有限公司 | Liquid-crystal display device with visual-angle switched and adjusting polarized wafer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608218A (en) * | 2001-11-19 | 2005-04-20 | 新日本石油株式会社 | Circular polarizing plate and liquid crystal display device |
| CN1628262A (en) * | 2002-06-18 | 2005-06-15 | 三星电子株式会社 | Liquid crystal display for performing time divisional color display, method of driving the same backlight unit for liquid crystal display |
| CN1258112C (en) * | 2002-11-22 | 2006-05-31 | 精工爱普生株式会社 | LCD device and electronic apparatus |
| CN1982976A (en) * | 2005-12-13 | 2007-06-20 | 奇美电子股份有限公司 | Liquid-crystal display device with visual-angle switched and adjusting polarized wafer |
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