CN101086586A - Image display system - Google Patents
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- CN101086586A CN101086586A CN 200610091553 CN200610091553A CN101086586A CN 101086586 A CN101086586 A CN 101086586A CN 200610091553 CN200610091553 CN 200610091553 CN 200610091553 A CN200610091553 A CN 200610091553A CN 101086586 A CN101086586 A CN 101086586A
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Abstract
An image displaying system comprises a LCD panel with a first base plate, a second base plate and a liquid layer between them. The first dual shaft 1/4lambadaoptical compensation film is set outside the first base plate, and the first outside the second base plate. The 1/4lambadaoptical compensation film of the first and the second dual shafts has the relation of Nz1+Nz2=1, with NZ=(nx-nz)/(nx-ny), nx, ny, nz representing the reflective coefficient of optical compensation film on x, y and z shaft, and NZ1, NZ2 representing the biaxial factor of the optical compensation film.
Description
Technical field
The present invention is about image display system, and particularly about high brightness vertical orientation (VA) the type LCD of the multiple compensate film of a kind of tool.
Background technology
LCD (LCD) has many advantages, and for example volume is little, in light weight, low power consumption or the like.Therefore, LCD has been applied to hand-held computer, mobile phone or the like electronic product widely.Typical liquid crystal comprises a colorized optical filtering laminar substrate and an active assembly array substrate subtend setting, inserts and puts a liquid crystal layer therebetween.Utilize the electric field between control subtend substrate,, and reach the effect that image shows by the orientation of controlling molecule in the liquid crystal layer.Because the optical anisotropy (anisotropy) of liquid crystal material itself when different directions is watched, causes incident light to see different effective hyperbolic foldings (birefringence).Therefore, the visual angle of traditional LCD also is not so good as self-emitting display, and for example the visual angle of cathode ray tube (CRT), organic electro-luminescent display (OLED) and plasma display (PDP) is wide.
Conventional liquid crystal is restricted its application because of being subject to its narrow viewing angle characteristic.Therefore for making LCD have wide viewing angle, traditional multiple field domain vertical orientation (Multi-DomainVertical Alignment, be called for short MVA) the type LCD, utilize projection (bump) or protrusion (protrusion) to cause the Liquid Crystal Molecules Alignment orientation different, and then the electric force lines distribution in the liquid crystal born of the same parents (cell) is changed, also make Liquid Crystal Molecules Alignment simultaneously and the mode of falling down changes.
Fig. 1 is the synoptic diagram that shows traditional vertical orientation (VA) type LCD.Traditional VA LCD comprises that a vertical orientation (VA) type liquid crystal born of the same parents 20 are folded between the upper and lower polarization plates 30,10.Upper and lower polarization plates 30,10 is the linear polarization plate, and its optical axis is vertical mutually to each other.Therefore yet traditional VA LCD is very narrow in the visual angle of diagonal, that is in oblique angle direction 45,135,225, and the visual angle deficiency of 315 degree directions, needs through suitable compensation.
Fig. 2 is the synoptic diagram that shows traditional tool 1/4 λ compensating plate vertical orientation (VA) type LCD.For making vertical orientation (VA) type LCD have wide viewing angle, conventional art respectively adds one 1/4 λ optical compensation films 25,15 respectively between upper deflection board 30 and liquid crystal born of the same parents 20 and lower polarizing plate 10 and liquid crystal born of the same parents 20.1/4 λ optical compensation films 25 can be considered a circularly polarizing plate in conjunction with upper deflection board 30, and relatively 1/4 λ optical compensation films 15 can be considered another circularly polarizing plate in conjunction with lower polarizing plate 10.And a minus C axle compensate film (not shown) the compensation liquid crystal born of the same parents 20 that arrange in pairs or groups, the incident light experience is close to identical hyperbolic folding, can obtain the image of a relative wide viewing angle and symmetry thus.Above-mentioned hyperbolic folding (birefringence) changes the result of product of sum total for hyperbolic folding Δ n with the total length d of (2) incident light experience liquid crystal layer of (1) liquid crystal molecule.Yet the efficient of light penetration liquid crystal display assembly is relevant with hyperbolic folding (birefringence) the variation sum total that light is experienced in display assembly.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of image display system, utilize the characteristic of two two optical axis 1/2 λ optical compensation films, promote display in the visual angle of oblique angle direction.
According to one embodiment of the invention, the invention provides a kind of image display system, comprising: a panel of LCD, it comprise one first substrate, one second substrate, and a liquid crystal layer be folded between this first substrate and this second substrate; One first twin shaft, 1/4 λ optical compensation films is arranged on the outside of this first substrate; And one second twin shaft, 1/4 λ optical compensation films is arranged on the outside of this second substrate; Wherein this first twin shaft, 1/4 λ optical compensation films and this second twin shaft 1/4 λ optical compensation films have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).
According to another embodiment of the present invention, a kind of image display system is provided, comprising: a panel of LCD, it comprise one first substrate, one second substrate, and a liquid crystal layer be folded between this first substrate and this second substrate; One first twin shaft, 1/4 λ optical compensation films is arranged on the outside of this first substrate; One second twin shaft, 1/4 λ optical compensation films is arranged on the outside of this second substrate; One first polarization plates is arranged on this first twin shaft, 1/4 λ optical compensation films, with respect to the outside of this liquid crystal layer; And one second polarization plates be arranged on this second twin shaft, 1/4 λ optical compensation films, with respect to the outside of this liquid crystal layer; Wherein this first twin shaft, 1/4 λ optical compensation films and this second twin shaft 1/4 λ optical compensation films have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is the synoptic diagram that shows traditional multiple field domain vertical orientation (MVA) type LCD;
Fig. 2 is the synoptic diagram that shows the traditional tool multiple field domain vertical orientation of 1/4 λ compensate film (MVA) type LCD;
Fig. 3 is the decomposition stretch-out view that shows according to vertical orientation (VA) the type liquid crystal display assembly of the multiple compensate film of one embodiment of the invention tool;
Fig. 4 is the twin shaft 1/4 λ optical compensation films that shows according to the embodiment of the invention, the graph of a relation that its different its slow axis of Nz value (slow axes) changes with angle;
Fig. 5 is the decomposition stretch-out view that shows according to vertical orientation (VA) the type liquid crystal display assembly of the multiple compensate film of another embodiment of the present invention tool;
Fig. 6 shows the block schematic diagram that comprises vertical orientation (VA) the type panel of LCD of the multiple compensate film of a display assembly tool according to the display system of the embodiment of the invention; And
Fig. 7 shows the block schematic diagram that comprises the electronic installation of display assembly according to the embodiment of the invention.
The primary clustering symbol description
10～lower polarizing plate; 15～the 1 λ optical compensation films; 20～liquid crystal born of the same parents; 25～the 2 1/4 λ optical compensation films; 30～upper deflection board.
100, the vertical orientation of 200～multiple compensate film (VA) type LCD; 110,210～the first polarization plates; 120～twin shaft, 1/2 λ optical compensation films; 130,230～the first twin shafts, 1/4 λ optical compensation films; 140,240～C-axle compensate film; 150,250～liquid crystal born of the same parents; 160,260～the second twin shafts, 1/4 λ optical compensation films; 170,270～the second polarization plates; 220～A-axle compensate film; 225～C-axle compensate film; 300～display assembly; 350～controller; 400～input module; 500～electronic installation.
Embodiment
The invention provides a kind of image display system, with two two optical axis 1/4 λ optical compensation plate compensation high brightness vertical orientation (VA) type LCD, can solve effectively and reduce light leak (light leakage) problem of display under tilted direction, and then promote its oblique visual angle.According to the embodiment of the invention, above-mentioned image display system comprises that a panel of LCD is in conjunction with two forms such as two optical axis 1/4 λ optical compensation plate collocation C-axle optical compensation films, A-axle optical compensation films or twin shaft 1/2 λ optical compensation films.Below at the embodiment of the invention, be described in detail as follows:
Fig. 3 is the decomposition stretch-out view that shows according to vertical orientation (VA) the type liquid crystal display assembly of the multiple compensate film of one embodiment of the invention tool.One LCD comprises that liquid crystal born of the same parents 150 have upper substrate, infrabasal plate and a liquid crystal layer and are folded between the upper and lower substrate.One first polarization plates 110 is arranged on liquid crystal born of the same parents 150 the outside.One second polarization plates 170 is arranged on another outside of liquid crystal born of the same parents 150, and wherein, first and second polarization plates for example is a circularly polarizing plate.One first twin shaft, 1/4 λ optical compensation films 130 is folded between first polarization plates 110 and the liquid crystal born of the same parents 150.One second twin shaft, 1/4 λ optical compensation films 160 is folded between second polarization plates 170 and the liquid crystal born of the same parents 150.
One C-axle compensate film 140 is folded between first twin shaft, 1/4 λ optical compensation films 130 and the liquid crystal born of the same parents 150, in order to compensation liquid crystal born of the same parents 150 light leak.Above-mentioned C-axle compensate film 140 also can place between second twin shaft, 1/4 λ compensate film 160 and the liquid crystal born of the same parents 150, to compensate the light leak of second polarization plates 160.One twin shaft, 1/2 λ optical compensation films 120 is folded between first polarization plates 110 and first twin shaft, the 1/4 λ optical compensation films 130, to compensate the light leak of first polarization plates 110.Above-mentioned twin shaft 1/2 λ optical compensation films 120 also optionally is folded between second polarization plates 170 and second twin shaft, the 1/4 λ optical compensation films 160, to compensate the light leak of second polarization plates 160.
According to a preferred embodiment of the invention, first twin shaft, 1/4 λ optical compensation films 130 and second twin shaft, 1/4 λ optical compensation films 160 have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).And first twin shaft, 1/4 λ optical compensation films 130 is vertical each other with the slow axis (slow axes) of second twin shaft, 1/4 λ optical compensation films 160, the characteristic that circularly polarizing plate can be possessed high brightness at forward under this condition, and the characteristic at the high visual angle of tool when oblique.
The twin shaft factor (biaxial factor) Nz1, the NZ2 of first twin shaft, 1/4 λ optical compensation films 130 and second twin shaft, 1/4 λ optical compensation films 160 can be respectively 0 and 1,0.25 and 0.75 or 0.5 and 0.5, and combinations thereof all can promote the oblique visual angle of display effectively.
For twin shaft 1/4 λ optical compensation films, the situation that different its slow axis of Nz value (slow axes) changes with angle as shown in Figure 4.See also Fig. 4, Nz＞0.5 and Nz＜0.5 o'clock, the slow axis of twin shaft 1/4 λ optical compensation films (slow axes) is to be symcenter with Nz=0.5 with the trend that observation angle θ changes, toward different direction skews.So when two twin shafts, 1/4 its Nz1+Nz2=1 of λ optical compensation films, the angle of this two slow axis will not change with observation tilt angle theta difference to some extent.In view of this, present embodiment is designed to 1 with the value of the Nz value addition of two twin shafts, 1/4 λ optical compensation films, make when forward two slow axis are the then oblique observation of quadrature, also will remain quadrature, thereby eliminate the light leakage phenomena of twin shaft 1/4 λ optical compensation films, and then increased the visual angle of VA-LCD assembly.
Fig. 5 is the decomposition stretch-out view that shows according to vertical orientation (VA) the type liquid crystal display assembly of the multiple compensate film of another embodiment of the present invention tool.According to another embodiment of the present invention, a LCD comprises that liquid crystal born of the same parents 250 have upper substrate, infrabasal plate and a liquid crystal layer and are folded between the upper and lower substrate.One first polarization plates 210 is arranged on liquid crystal born of the same parents 250 the outside.One second polarization plates 270 is arranged on another outside of liquid crystal born of the same parents 250, and wherein, first and second polarization plates for example is a circularly polarizing plate.One first twin shaft, 1/4 λ optical compensation films 230 is folded between first polarization plates 210 and the liquid crystal born of the same parents 250.One second twin shaft, 1/4 λ optical compensation films 260 is folded between second polarization plates 270 and the liquid crystal born of the same parents 250.
One C-axle compensate film 240 is folded between first twin shaft, 1/4 λ optical compensation films 230 and the liquid crystal born of the same parents 250, in order to compensation liquid crystal born of the same parents 250 light leak.An one C-axle compensate film 225 and an A-axle compensate film 220 are folded between first polarization plates 210 and first twin shaft, the 1/4 λ optical compensation films 230, to compensate the light leak of first polarization plates 210.An above-mentioned C-axle compensate film 215 and an A-axle compensate film 210 also optionally are folded between second polarization plates 270 and second twin shaft, the 1/4 λ optical compensation films 260, to compensate the light leak of second polarization plates 160.
According to a preferred embodiment of the invention, first twin shaft, 1/4 λ optical compensation films 230 and second twin shaft, 1/4 λ optical compensation films 260 have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).And first twin shaft, 1/4 λ optical compensation films 230 is vertical each other with the slow axis (slow axes) of second twin shaft, 1/4 λ optical compensation films 260, the characteristic that circularly polarizing plate can be possessed high brightness at forward under this condition, and the characteristic at the high visual angle of tool when oblique.
The twin shaft factor (biaxial factor) Nz1, the NZ2 of first twin shaft, 1/4 λ optical compensation films 230 and second twin shaft, 1/4 λ optical compensation films 260 can be respectively 0 and 1,0.25 and 0.75 or 0.5 and 0.5, and combinations thereof all can promote the oblique visual angle of display effectively.
Fig. 6 is the image display system that shows according to the embodiment of the invention, comprises vertical orientation (VA) the type panel of LCD of the multiple compensate film of a display assembly 300 tools.The penetrate through type liquid crystal display board 100 or 200 of one multiple compensate film is coupled to a controller 350, to constitute a display assembly 300.In Fig. 6, display assembly 300 comprises the driving circuit (not shown) of one source pole (source) and grid (gate), with vertical orientation (VA) the type panel of LCD 100 or 200 of the multiple compensate film of control tool.Controller 350 comprises a signal converter (converter), output signal can be sent to vertical orientation (VA) the type panel of LCD 200 or 300 of the multiple compensate film of tool, makes its show image.
Fig. 7 shows the block schematic diagram that comprises the electronic installation 500 of display assembly 300 according to the embodiment of the invention.One input module 400 is coupled to the controller 350 of display assembly 300.Input module 400 comprises a microprocessor, signal is inputed to controller 350, show image after treatment.Electronic installation 500 comprises for example individual digital reason (PDA), portable type mobile phone (mobile phone), notebook, laptop computer or other portable electronic devices.
Feature of the present invention and advantage are to provide the display panels of the multiple compensate film of a kind of tool, by two two optical axis 1/4 λ optical compensation plate compensation high brightness vertical orientation (VA) type LCD, the summation of its twin shaft factor (biaxial factor) Nz1, NZ2 is 1, and (slow axes) is vertical each other for the slow axis of two twin shaft 1/4 λ optical compensation films, can solve effectively and reduce display in light leak (light leakage) problem of oblique angle, and then promote visual angle in this display.
Though the present invention with preferred embodiment openly as above; right its is not in order to limiting scope of the present invention, any insider, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (17)
1. image display system comprises:
One panel of LCD, it comprises:
One liquid crystal born of the same parents comprise that one first substrate, one second substrate and a liquid crystal layer are folded between this first substrate and this second substrate;
One first twin shaft, 1/4 λ optical compensation films is arranged on the outside of this first substrate; And
One second twin shaft, 1/4 λ optical compensation films is arranged on the outside of this second substrate;
Wherein this first twin shaft, 1/4 λ optical compensation films and this second twin shaft 1/4 λ optical compensation films have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).
2. image display system according to claim 1, wherein this panel of LCD comprises a vertical orientation (VA) type LCD.
3. image display system according to claim 1, wherein this first twin shaft, 1/4 λ optical compensation films is vertical each other with the slow axis (slow axes) of this second twin shaft, 1/4 λ optical compensation films.
4. image display system according to claim 1 also comprises:
One first polarization plates is arranged on this first substrate, with respect to the outside of this liquid crystal layer; And
One second polarization plates is arranged on this second substrate, with respect to the outside of this liquid crystal layer.
5. image display system according to claim 4 comprises that also one first twin shaft, 1/2 optical compensation films is arranged between this first polarization plates and this first twin shaft 1/4 λ optical compensation films.
6. image display system according to claim 4 also comprises:
An one C-axle optical compensation films and an A-axle optical compensation films are folded between this first polarization plates and this first twin shaft 1/4 λ optical compensation films;
Wherein this A-axle optical compensation films directly is connected with this first polarization plates.
7. image display system according to claim 4, wherein this first and second polarization plates is a circularly polarizing plate.
8. image display system according to claim 1 comprises that also a controller is coupled to this panel of LCD, and controls this panel of LCD according to an input signal and make it to produce image.
9. image display system according to claim 8 comprises that also an input media is coupled to this controller, so that the foundation of this panel of LCD show image to be provided.
10. image display system comprises:
One panel of LCD comprises:
One liquid crystal born of the same parents comprise that one first substrate, one second substrate and a liquid crystal layer are folded between this first substrate and this second substrate;
One first twin shaft, 1/4 λ optical compensation films is arranged on the outside of this first substrate;
One second twin shaft, 1/4 λ optical compensation films is arranged on the outside of this second substrate;
One first polarization plates is arranged on this first twin shaft, 1/4 λ optical compensation films, with respect to the outside of this liquid crystal layer; And
One second polarization plates is arranged on this second twin shaft, 1/4 λ optical compensation films, with respect to the outside of this liquid crystal layer;
Wherein this first twin shaft, 1/4 λ optical compensation films and this second twin shaft 1/4 λ optical compensation films have Nz1+NZ2=1, NZ=(nx-nz)/(nx-ny) wherein, wherein nx, ny, nz respectively represent the refraction coefficient of optical compensation films on x, y, z axle, and Nz1, NZ2 respectively represent first and second twin shaft 1/4 λ optical compensation films twin shaft factor (biaxial factor).
11. image display system according to claim 10, wherein this panel of LCD comprises a vertical orientation (VA) type LCD.
12. image display system according to claim 10, wherein this first twin shaft, 1/4 λ optical compensation films is vertical each other with the slow axis (slow axes) of this second twin shaft, 1/4 λ optical compensation films.
13. image display system according to claim 10 comprises that also one first twin shaft, 1/2 optical compensation films is arranged between this first polarization plates and this first twin shaft 1/4 λ optical compensation films.
14. image display system according to claim 10, wherein this first and second polarization plates is a circularly polarizing plate.
15. image display system according to claim 10 also comprises:
An one C-axle optical compensation films and an A-axle optical compensation films are folded between this first polarization plates and this first twin shaft 1/4 λ optical compensation films;
Wherein this A-axle optical compensation films directly is connected with this first polarization plates.
16. image display system according to claim 10 comprises that also a controller is coupled to this panel of LCD, and controls this panel of LCD according to an input signal and make it to produce image.
17. image display system according to claim 16 comprises that also an input media is coupled to this controller, so that the foundation of this panel of LCD show image to be provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610091553 CN101086586A (en) | 2006-06-07 | 2006-06-07 | Image display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610091553 CN101086586A (en) | 2006-06-07 | 2006-06-07 | Image display system |
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| CN101086586A true CN101086586A (en) | 2007-12-12 |
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| CN 200610091553 Pending CN101086586A (en) | 2006-06-07 | 2006-06-07 | Image display system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661175A (en) * | 2008-08-26 | 2010-03-03 | 三星电子株式会社 | Liquid crystal display and method for manufacturing the same |
| CN102043283A (en) * | 2009-10-20 | 2011-05-04 | 乐金显示有限公司 | Liquid crystal display |
| CN102368128A (en) * | 2011-09-20 | 2012-03-07 | 昆山龙腾光电有限公司 | Stereoscopic display device with polarization glasses |
| CN101539685B (en) * | 2007-12-21 | 2012-05-30 | 奇美电子股份有限公司 | LCD display device and manufacturing method thereof |
| CN106094348A (en) * | 2016-08-19 | 2016-11-09 | 深圳市华星光电技术有限公司 | Liquid crystal panel and there is the liquid crystal display of this liquid crystal panel |
| CN112327538A (en) * | 2020-11-05 | 2021-02-05 | 北海惠科光电技术有限公司 | Display panel and display device |
-
2006
- 2006-06-07 CN CN 200610091553 patent/CN101086586A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539685B (en) * | 2007-12-21 | 2012-05-30 | 奇美电子股份有限公司 | LCD display device and manufacturing method thereof |
| CN101661175A (en) * | 2008-08-26 | 2010-03-03 | 三星电子株式会社 | Liquid crystal display and method for manufacturing the same |
| US8692964B2 (en) | 2008-08-26 | 2014-04-08 | Samsung Display Co., Ltd. | Liquid crystal display and method for manufacturing the same |
| CN101661175B (en) * | 2008-08-26 | 2014-05-28 | 三星显示有限公司 | Liquid crystal display and method for manufacturing the same |
| CN102043283A (en) * | 2009-10-20 | 2011-05-04 | 乐金显示有限公司 | Liquid crystal display |
| US8743321B2 (en) | 2009-10-20 | 2014-06-03 | Lg Display Co., Ltd. | Liquid crystal display |
| CN102368128A (en) * | 2011-09-20 | 2012-03-07 | 昆山龙腾光电有限公司 | Stereoscopic display device with polarization glasses |
| CN106094348A (en) * | 2016-08-19 | 2016-11-09 | 深圳市华星光电技术有限公司 | Liquid crystal panel and there is the liquid crystal display of this liquid crystal panel |
| WO2018032572A1 (en) * | 2016-08-19 | 2018-02-22 | 深圳市华星光电技术有限公司 | Liquid crystal panel and liquid crystal display comprising same |
| CN106094348B (en) * | 2016-08-19 | 2019-05-03 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display with the liquid crystal display panel |
| US10295864B2 (en) | 2016-08-19 | 2019-05-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Liquid crystal panel and liquid crystal display with the same |
| CN112327538A (en) * | 2020-11-05 | 2021-02-05 | 北海惠科光电技术有限公司 | Display panel and display device |
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