CN102129137B - Liquid crystal display and manufacturing method thereof - Google Patents
Liquid crystal display and manufacturing method thereof Download PDFInfo
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- CN102129137B CN102129137B CN2010100021902A CN201010002190A CN102129137B CN 102129137 B CN102129137 B CN 102129137B CN 2010100021902 A CN2010100021902 A CN 2010100021902A CN 201010002190 A CN201010002190 A CN 201010002190A CN 102129137 B CN102129137 B CN 102129137B
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Abstract
The invention provides a liquid crystal display and a manufacturing method thereof. The liquid crystal display comprises a liquid crystal display panel, wherein the liquid crystal display panel is provided with a plurality of pixels; a backlight module is arranged below the liquid crystal display panel; an optical lens is arranged between the liquid crystal display panel and the backlight module, wherein the upper and lower surfaces of the optical lens are provided with a plurality of structures; light of the backlight module is dispersed into multiple seven-color light sources; and each seven-color light source consists of color light of continuous spectrums from red to purple and corresponds to the pixel.
Description
Technical field
The present invention relates to a kind of LCD, and relate in particular to and a kind ofly use optical mirror slip and the LCD and the manufacturing approach thereof of netrual colour optical filter.
Background technology
Traditional LCD utilizes colored filter will be divided into three kinds of light of red, green, blue (RGB) from the white light of backlight module, and utilizes three kinds of light colour mixtures of red, green, blue (RGB), reaches full-color display effect.Consult Fig. 1; It is the diagrammatic cross-section that shows traditional LCD; Backlight module 10 is arranged at the below of display panels 14, between backlight module 10 and display panels 14, has following polaroid 12, and colored filter 16 then is set on display panels 14; Colored filter 16 has the look resistance of three kinds of colors; Be respectively red color resistance 16R, green look resistance 16G and blue look resistance 16B, through behind polaroid 12 and the display panels 14 down, produce the light of three kinds of colors of red, green, blues (RGB) via colored filter 16 from the white light of backlight module 10.
Because the resistance of the look of colored filter 16 can absorb most luminous energy,, make that the utilization ratio of optical energy of traditional LCD is low through 30% of the only remaining approximately original incident light energy of the luminous energy behind the colored filter 16.In addition, because the cost of colored filter is high, make the manufacturing cost of traditional LCD to reduce.
Therefore, industry is needed a kind of LCD badly, and it can not need colorized optical filtering, and reaches full-color display effect.
Summary of the invention
The present invention provides a kind of LCD, comprising: display panels has a plurality of pixels; Backlight module is arranged under the display panels; And optical mirror slip is arranged between display panels and the backlight module; Wherein optical mirror slip has the upper and lower surfaces that a plurality of structures are arranged at optical mirror slip; Feasible optical dispersion from backlight module becomes multiple tracks seven glory sources; Per pass seven glory sources are made up of the coloured light of redness to purple continuous spectrum, and correspond to pixel, and wherein the angle from the perpendicular line of the light of said backlight module and said optical mirror slip light entrance face is Brewster angle θ
B
The present invention provides a kind of manufacturing approach of LCD again, and this method comprises: display panels is provided, has a plurality of pixels; Backlight module is provided, is arranged at the display panels below; And provide optical mirror slip to be attached at the display panels below; In the face of backlight module; Wherein optical mirror slip has the upper and lower surfaces that a plurality of structures are formed at optical mirror slip, and feasible optical dispersion from backlight module becomes multiple tracks seven glory sources, and per pass seven glory sources are made up of the coloured light of redness to purple continuous spectrum; And correspond to pixel, wherein the angle from the perpendicular line of the light of said backlight module and said optical mirror slip light entrance face is Brewster angle θ
B
For let above-mentioned purpose of the present invention, characteristic, and advantage can be more obviously understandable, below in conjunction with accompanying drawing, elaborate as follows.
Description of drawings
Fig. 1 shows the diagrammatic cross-section of traditional LCD;
Fig. 2 A shows according to one embodiment of the invention, the diagrammatic cross-section of LCD;
Fig. 2 B shows according to another embodiment of the present invention, the diagrammatic cross-section of LCD;
Fig. 3 shows according to one embodiment of the invention, the diagrammatic cross-section of optical mirror slip, and light is got into the synoptic diagram of optical mirror slip by backlight module;
Fig. 4 shows according to another embodiment of the present invention, the diagrammatic cross-section of optical mirror slip, and light is got into the synoptic diagram of optical mirror slip by backlight module.
Embodiment
The present invention provides a kind of LCD, and it does not need colored filter, utilizes optical mirror slip can reach full-color display effect.
Consult Fig. 2 A, it shows the diagrammatic cross-section of the LCD of one embodiment of the invention.At first; Display panels 26 is provided, and display panels 26 comprises upper and lower base plate, and is arranged on the liquid crystal layer between the upper and lower base plate; Upper and lower base plate can be a glass substrate; On infrabasal plate, form thin film transistor (TFT) array (TFTArray), and many sweep traces that intermesh (scan line) and data line (data line), one pixel (sub-pixel) of definition between wantonly two adjacent sweep traces and wantonly two the adjacent data lines.In one embodiment, a pixel (pixel) can be made up of three time pixels, and three pixels are respectively red, green and blue, and display panels 26 has a plurality of pixels (not drawing).In another embodiment, a pixel (pixel) can be made up of the inferior pixel more than three, for example is respectively red, green, blue and yellow inferior pixel.
In addition, consult Fig. 2 B, it shows the diagrammatic cross-section of the LCD of another embodiment of the present invention, and the difference of itself and Fig. 2 A is that optical mirror slip 24 is arranged on down between polaroid 22 and the backlight module 20.Likewise, also can be become multiple tracks seven glory sources, and per pass seven glory sources correspond to each pixel of display panels 26, reach full-color display effect by this by optical mirror slip 24 chromatic dispersions from the white light of backlight module 20.
Then, consult Fig. 3, it shows the diagrammatic cross-section according to the optical mirror slip 24 of one embodiment of the invention, and light is got into the synoptic diagram of optical mirror slip 24 by backlight module 20.In this embodiment, the upper and lower surfaces 24A of optical mirror slip 24 and 24B have the structure 30 and 32 of a plurality of N fonts respectively.Light B from backlight module 20 for example is a white light, and the angle of the perpendicular line of itself and optical mirror slip 24 light entrance faces is Brewster angle θ
B, can make to reach the highest from the light B of backlight module 20 transmissivity through optical mirror slip 24.Brewster angle θ
BSystem is by the decision of the material of optical mirror slip 24, and the material of optical mirror slip 24 is a light transmissive material, glass for example, the Brewster angle θ of glass
BBe 56.3 degree.The angle that gets into the perpendicular line of optical mirror slip 24 light entrance faces with the light of backlight module is Brewster angle θ
BAnd polaroid 22 under the collocation, can make the transmissivity of transverse magnetic field (transverse magnetic is called for short TM) polarized light reach the highest.
Because a plurality of structures 30 and 32 of optical mirror slip 24 upper and lower surfaces have the effect of prism chromatic dispersion, can be so that become multiple tracks seven glory sources 40 from the white light chromatic dispersion of backlight module 20, and correspond to each pixel of display panels 26.Per pass seven glory sources 40 are made up of the coloured light of redness to purple continuous spectrum, comprise red, orange, yellow, green, blue, indigo, purple seven-colour-light (41 to 47).
In one embodiment, the spacing P of the N font structure 30 of optical mirror slip 24 upper surfaces equals the width of 26 1 pixels of display panels on the whole, and 1 of the height H of N font structure 30 approximates P * tan θ
BThe spacing Q of the N font structure 32 of optical mirror slip 24 lower surfaces is less than the width P of a pixel, and the height H 2 of N font structure 32 approximates Q * tan θ
BThe N font structure 30 of optical mirror slip 24 upper and lower surfaces and 32 surperficial 30a and 32a are parallel to each other, that is incidence surface and the exiting surface of light B through optical mirror slip 24 is parallel to each other.In one embodiment, N font structure 30 and 32 surperficial 30a and the distance B between the 32a are approximately between 0.2 to 2cm, and the thickness H3 of optical mirror slip 24 approximates (D * cos θ
B)+H1+H2.
According to one embodiment of the invention, the structure of optical mirror slip 24 upper and lower surfaces can form via photolithography techniques.Substrate at first is provided, and the material of substrate is light-transmitting materials, for example glass; Then the upper and lower surfaces in substrate is coated with photoresistance; Provide gray scale mask (gray level mask) to the photoresistance of substrate upper and lower surfaces make public, developing process, form the photoresistance pattern at the substrate upper and lower surfaces, correspond to the structure of optical mirror slip 24 upper and lower surfaces respectively; Via the upper and lower surfaces of photoresistance pattern etching substrate, form N font structure as shown in Figure 3 then.Then, photoresistance is removed, promptly accomplished the making of optical mirror slip 24.
In another embodiment, the structure of optical mirror slip 24 upper and lower surfaces is made by photoresistance.The substrate of printing opacity at first is provided; Glass for example; Then select for use the photoresistance suitable to coat the upper and lower surfaces of substrate with the substrate of glass refractive index; Utilize the gray scale mask that the photoresistance of substrate upper and lower surfaces is made public and developing process, formed photoresistance pattern is the structure of optical mirror slip 24 upper and lower surfaces.In this embodiment, the photoresistance pattern does not remove and stays the substrate upper and lower surfaces, forms the structure of optical mirror slip 24 upper and lower surfaces.
In an embodiment of the present invention; Each pixel of display panels 26 comprises the inferior pixel more than three or three; And these times pixel can be respectively red, green, blue look or yellow etc., and therefore, other coloured light in the seven glory sources 40 except the required coloured light of each time pixel needs crested.In one embodiment of this invention, in display panels 26, form black-matrix layer (blackmatrix; BM) (do not draw), make that unwanted coloured light can be covered by black-matrix layer in the seven glory sources 40.
In addition; Between a plurality of N font structures 32 of optical mirror slip 24 lower surface 24B, also form light-shielding material layers 34; Light-shielding material layers 34 for example is light absorbing material or catoptrical material; It can completely cut off multiple tracks seven glory sources 40, avoids because of multiple tracks seven glory sources 40 apart too near mixed lights each other.Light-shielding material layers 34 covers on the sidewall and part lower surface 24B between the N font structure 32, the width L that wherein has a part lower surface 24B that light-shielding material layers 34 covers approximately with inferior pixel between the width of black-matrix layer (BM) suitable.
According to one embodiment of the invention, the structural light-shielding material layers 34 of optical mirror slip 24 lower surfaces can form via photolithography techniques.At first on the structure of optical mirror slip 24 lower surfaces, be coated with light screening material; Then on light screening material, be coated with photoresistance; Provide mask to the photoresistance of optical mirror slip 24 lower surfaces make public, developing process, on light screening material, form the photoresistance pattern, correspond to the pattern of light-shielding material layers 34; Via photoresistance pattern etching light screening material, form light-shielding material layers 34 as shown in Figure 3 then.
In the embodiments of figure 3; Per pass seven glory sources 40 correspond to each pixel of display panels 26; Because each coloured light in the seven glory sources 40 need produce accurate contraposition with each time pixel in the display panels 26; Therefore, in one embodiment of this invention, on the infrabasal plate of optical mirror slip 24 and display panels 26, form a plurality of contraposition marks; The mode of utilizing mechanical contraposition with after the contraposition mark of display panels 26 is aimed at, is pasted to display panels 26 belows with optical mirror slip 24 with optical mirror slip 24 again.
When contraposition when problem takes place accurately, in each time pixel of display panels 26, will present unexpected coloured light, for example the coloured light of red time pixel moves toward the long wavelength, makes red time pixel blending orange light partly, and causes color offset phenomenon.In order to reduce the influence that the contraposition problem causes colour cast, the present invention provides another kind of optical mirror slip, consults Fig. 4, and it shows the diagrammatic cross-section according to the optical mirror slip 24 of another embodiment of the present invention, and light is got into the synoptic diagram of optical mirror slip 24 by backlight module 20.The optical mirror slip 24 of Fig. 4 is that with the difference of the optical mirror slip 24 of Fig. 3 the structure 36 and 38 of its upper and lower surfaces 24A and 24B is the structure of V-shape.Likewise, the angle from the perpendicular line of the white light B of backlight module 20 and optical mirror slip 24 light entrance faces is Brewster angle θ
B
In one embodiment, the spacing P of the V-shape structure 36 of optical mirror slip 24 upper surfaces approximates the width of 26 1 pixels of display panels, and 1 of the height H of V-shape structure 30 approximates P * tan θ
BThe spacing Q of the V-shape structure 38 of optical mirror slip 24 lower surfaces is less than the width P of a pixel, and the height H 2 of V-shape structure 38 approximates Q * tan θ
BThe V-shape structure 36 of optical mirror slip 24 upper and lower surfaces and 38 surperficial 36a and 38a are parallel to each other, and the surperficial 36b of V- shape structure 36 and 38 and 38b are also parallel to each other, that is light B is parallel to each other through the incidence surface and the exiting surface of optical mirror slip 24.In one embodiment, V- shape structure 36 and 38 surperficial 36a and the distance B between the 38a are approximately between 0.3 to 2cm, and the thickness H3 of optical mirror slip 24 approximates (D * cos θ
B)+H1+H2.
In addition; Between a plurality of V-shape structures 38 of optical mirror slip 24 lower surface 24B and the tip of V-shape structure 38 have light-shielding material layers 34; Light-shielding material layers 34 for example is light absorbing material or catoptrical material; It can distinguish isolated multiple tracks seven glory source 40A and 40B, avoids multiple tracks seven glory source 40A and 40B mixed light each other, and the width of the black-matrix layer (BM) between the width L that has the part that light-shielding material layers 34 covers on the lower surface 24B of optical mirror slip 24 and the inferior pixel is suitable.
In the embodiment of Fig. 4; Use twice seven glory source 40A and 40B to correspond to each pixel of display panels 26; After the V-shape structure beam split of white light B from backlight module 20 via optical mirror slip 24; Form twice seven glory source 40A and 40B, the red light 41 among these twice seven glory source 40A and the 40B is adjacent to each other.In this embodiment, each pixel of display panels 26 has 6 time pixels, and these 6 pixels are symmetrical structure, for example is respectively blue, green, red, red, green and blue.Because when the contraposition problem takes place; The coloured light of the red time pixel in right district can move toward the long wavelength; The coloured light of the redness time pixel that a left side is distinguished then can move toward the short wavelength, when the Jiang You district is regarded as one with the left inferior pixel of distinguishing, then can reach the effect of compensation; Make color offset phenomenon reduce, this kind compensation is called the colour mixture compensation in the primary colors.In addition, utilize the optical lens structure of Fig. 4 also can reach the effect that other wave band colour mixture compensates, therefore, can reduce the color offset phenomenon of each time pixel.
In sum; LCD of the present invention can use optical mirror slip to reach the separately effect of optical wavelength; Therefore can the white light chromatic dispersion from backlight module be become multiple tracks seven glory sources; And utilize the red, green, blue in the seven glory sources to reach full-color display effect, and replace colored filter by this, reach the purpose of the LCD of netrual colour optical filter.
In addition; LCD of the present invention also has following advantage; Because a large amount of loss luminous energies of colorized optical filtering sector-meeting, its utilization ratio of optical energy is about 30%, and LCD of the present invention need not use colored filter; The luminous energy of using optical mirror slip in the white light spectroscopic processes, to lose is minimum, and is Brewster angle θ from the angle of the perpendicular line of the light of backlight module and optical mirror slip light entrance face
BThe time, loss luminous energy hardly, therefore the utilization ratio of optical energy of LCD of the present invention can reach more than 70%.
In addition, because the dye molecule in the colored filter can influence the form of auroral polesization, and then influences the contrast of LCD, and LCD of the present invention does not need colored filter, therefore can promote the contrast of display.
In addition; Though the foregoing description is to utilize red, green, blue and gold-tinted in the seven glory sources to explain as an example; Yet other coloured light in the seven glory sources also can be applied in the LCD of the present invention, therefore can improve the colour gamut (color gamut) of display.
Though the present invention has disclosed preferred embodiment as above; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (31)
1. LCD comprises:
Display panels has a plurality of pixels;
Backlight module is arranged under the said display panels; And
Optical mirror slip; Be arranged between said display panels and the said backlight module; Wherein said optical mirror slip has the upper and lower surfaces that a plurality of structures are arranged at said optical mirror slip, will become multiple tracks seven glory sources from the optical dispersion of said backlight module, and each said seven glory source is made up of the coloured light of redness to purple continuous spectrum; And correspond to each said pixel
Wherein the angle from the perpendicular line of the light of said backlight module and said optical mirror slip light entrance face is Brewster angle θ
B
2. LCD as claimed in claim 1 comprises that also a pair of up and down polaroid folder establishes said display panels, and wherein said polaroid down is in the face of said backlight module.
3. LCD as claimed in claim 2, wherein said optical mirror slip are arranged at said display panels and said down between the polaroid.
4. LCD as claimed in claim 2, wherein said optical mirror slip are arranged between said polaroid down and the said backlight module.
5. LCD as claimed in claim 1, wherein light is parallel to each other through the incidence surface and the exiting surface of said a plurality of structures of the said upper and lower surfaces of said optical mirror slip.
6. LCD as claimed in claim 5, the distance between wherein said incidence surface and the said exiting surface is between 0.2 to 2cm.
7. LCD as claimed in claim 1; The spacing of said a plurality of structures of the said upper surface of wherein said optical mirror slip equals the width of a said pixel on the whole, and the spacing of said a plurality of structures of the said lower surface of said optical mirror slip is less than the width of a said pixel.
8. LCD as claimed in claim 1, the shape of said a plurality of structures of the said upper and lower surfaces of wherein said optical mirror slip comprises the zigzag of N font or V-shape.
9. LCD as claimed in claim 1, wherein said display panels also comprises black-matrix layer, and the part coloured light in the said seven glory sources is covered by said black-matrix layer.
10. LCD as claimed in claim 9 wherein is provided with light-shielding material layers between said a plurality of structures of the said lower surface of said optical mirror slip.
11. LCD as claimed in claim 10, the width of wherein said light-shielding material layers equals the width of said black-matrix layer.
12. LCD as claimed in claim 10, the zigzag that is shaped as the N font of wherein said a plurality of structures, and said light-shielding material layers is covered between the structure of said a plurality of N fonts.
13. LCD as claimed in claim 10, the zigzag that is shaped as V-shape of wherein said a plurality of structures, and said light-shielding material layers is covered between the structure of said V-shape and the tip of the structure of said V-shape.
14. LCD as claimed in claim 1, the zigzag that is shaped as the N font of wherein said a plurality of structures, and said seven glory sources of the structure of each N font generation correspond to each said pixel.
15. LCD as claimed in claim 14, wherein each said pixel comprises the inferior pixel more than three or three, and said color of pixel is respectively red, green and blue or red, green, blue and yellow.
16. LCD as claimed in claim 1, the zigzag that is shaped as V-shape of wherein said a plurality of structures, and two said seven glory sources of the structure of each V-shape generation correspond to each said pixel.
17. LCD as claimed in claim 16, wherein each said pixel comprises pixel six times, and said six color of pixel are respectively blue, green, red, red, green and blue.
18. the manufacturing approach of a LCD comprises:
Display panels is provided, has a plurality of pixels;
Backlight module is provided, is arranged at said display panels below; And
Optical mirror slip is provided; Be attached at said display panels below, in the face of said backlight module, wherein said optical mirror slip has the upper and lower surfaces that a plurality of structures are formed at said optical mirror slip; To become multiple tracks seven glory sources from the optical dispersion of said backlight module; Each said seven glory source is made up of the coloured light of redness to purple continuous spectrum, and corresponds to each said pixel
Wherein the angle from the perpendicular line of the light of said backlight module and said optical mirror slip light entrance face is Brewster angle θ
B
19. the manufacturing approach of LCD as claimed in claim 18, the formation method of said a plurality of structures of wherein said optical mirror slip comprises:
Substrate of glass is provided;
Upper and lower surfaces in said substrate of glass is coated with photoresistance respectively;
Provide the gray scale mask in said photoresistance top,, form the photoresistance pattern respectively at the said upper and lower surfaces of said substrate of glass via exposure, visualization way; And
Via the said upper and lower surfaces of the said substrate of glass of said photoresistance pattern etching, remove removing photoresistance then, form said a plurality of structure.
20. the manufacturing approach of LCD as claimed in claim 18, the formation method of said a plurality of structures of wherein said optical mirror slip comprises:
Substrate of glass is provided;
Upper and lower surfaces in said substrate of glass is coated with photoresistance respectively;
Provide the gray scale mask in said photoresistance top,, form the photoresistance pattern respectively to form said a plurality of structure at the said upper and lower surfaces of said substrate of glass via exposure, visualization way.
21. the manufacturing approach of LCD as claimed in claim 20, on the whole the refractive index of wherein said photoresistance equates with the refractive index of said substrate of glass.
22. the manufacturing approach of LCD as claimed in claim 18 also comprise forming black-matrix layer in said display panels, and the part coloured light in the said seven glory sources is covered by said black-matrix layer.
23. the manufacturing approach of LCD as claimed in claim 22 also is included between said a plurality of structures of said lower surface of said optical mirror slip and forms light-shielding material layers.
24. the manufacturing approach of LCD as claimed in claim 23, the width of wherein said light-shielding material layers equals the width of said black-matrix layer.
25. the manufacturing approach of LCD as claimed in claim 23, the formation method of wherein said light-shielding material layers comprises:
On the said lower surface of said optical mirror slip, be coated with light screening material;
On said light screening material, be coated with photoresistance;
Provide mask in said photoresistance top,, on said light screening material, form the photoresistance pattern via exposure, visualization way; And
Via the said light screening material of said photoresistance pattern etching, form said light-shielding material layers.
26. the manufacturing approach of LCD as claimed in claim 18, the said attaching step of wherein said optical mirror slip comprises:
On said optical mirror slip and said display panels, form a plurality of contraposition marks; And
With fitting behind the said a plurality of contraposition marks alignings on said optical mirror slip and the said display panels.
27. the manufacturing approach of LCD as claimed in claim 18, the shape of wherein said a plurality of structures comprises the zigzag of N font or V-shape.
28. the manufacturing approach of LCD as claimed in claim 27; The zigzag that is shaped as the N font of wherein said a plurality of structures; The structure of each N font produces said seven glory sources and corresponds to each said pixel; And wherein each said pixel comprises the inferior pixel more than three or three, and said time color of pixel is respectively red, green and blue or red, green, blue and yellow.
29. the manufacturing approach of LCD as claimed in claim 27; The zigzag that is shaped as V-shape of wherein said a plurality of structures; The structure of each V-shape produces two said seven glory sources and corresponds to each said pixel; And wherein each said pixel comprises pixel six times, and said six color of pixel are respectively blue, green, red, red, green and blue.
30. the manufacturing approach of LCD as claimed in claim 18; Wherein light is parallel to each other through the incidence surface and the exiting surface of said a plurality of structures of the said upper and lower surfaces of said optical mirror slip, and the distance between said incidence surface and the said exiting surface is between 0.2 to 2cm.
31. the manufacturing approach of LCD as claimed in claim 18; The spacing of said a plurality of structures of the said upper surface of wherein said optical mirror slip equals the width of a said pixel on the whole, and the spacing of said a plurality of structures of the said lower surface of said optical mirror slip is less than the width of a said pixel.
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| CN103207470B (en) * | 2012-01-11 | 2015-11-25 | 联想(北京)有限公司 | LCDs and liquid crystal display method |
| CN103234153B (en) * | 2013-04-28 | 2015-11-18 | 京东方科技集团股份有限公司 | A kind of direct-light-type backlight and liquid crystal indicator |
| CN103487983A (en) * | 2013-09-17 | 2014-01-01 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device thereof |
| CN106959541A (en) * | 2016-01-08 | 2017-07-18 | 京东方科技集团股份有限公司 | Display base plate, display panel and display device |
| CN107632447A (en) * | 2017-09-26 | 2018-01-26 | 京东方科技集团股份有限公司 | Display panel, display device and its control method |
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| CN101261386A (en) * | 2007-03-07 | 2008-09-10 | 启萌科技有限公司 | LCD device and light emitting unit |
| CN101526687A (en) * | 2008-03-07 | 2009-09-09 | 乐金显示有限公司 | Liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261386A (en) * | 2007-03-07 | 2008-09-10 | 启萌科技有限公司 | LCD device and light emitting unit |
| CN101526687A (en) * | 2008-03-07 | 2009-09-09 | 乐金显示有限公司 | Liquid crystal display device |
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