CN101055366A - Optical compensation structure and liquid crystal display device with the optical compensation structure - Google Patents
Optical compensation structure and liquid crystal display device with the optical compensation structure Download PDFInfo
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- CN101055366A CN101055366A CN 200610072436 CN200610072436A CN101055366A CN 101055366 A CN101055366 A CN 101055366A CN 200610072436 CN200610072436 CN 200610072436 CN 200610072436 A CN200610072436 A CN 200610072436A CN 101055366 A CN101055366 A CN 101055366A
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Abstract
The invention relates to a optical compensation structure and a LCD device provided with the optical compensation structure. In the invention, at least a LCD (C+) expiating film and a R-plate uni-axle extending expiating film are arranged between the C-STN-type LCD component of the LCD device. The optical compensation effect of Z-Axis direction and down visual angle is achieved by collocating the R-plate uni-axle extending expiating film and upright collocated LCD (C+) expiate film. The traditional used Z-plate extending expiating film which expiating the down visual angle of the C-STN-type LCD component with the difficulty of quality uncontrolled is replaced. The contrasting and color bias problem of the C-STN-type LCD device in the fastigiate angle is improved and the display quality is well.
Description
Technical field
The liquid crystal indicator that the present invention relates to a kind of optical compensation structure and have this optical compensation structure, especially refer to a kind of being applicable in the colored STN Super TN type liquid crystal indicator, provide colored STN Super TN profile plate that the optical compensation structure of preferable downwards angle of visibility compensation is arranged.
Background technology
LCD (Liquid Crystal Display; Abbreviation LCD) has been widely used on the various electronic information aid, for example TV, computing machine, mobile phone, PDA(Personal Digital Assistant), action AV device or the like.Market expectations LCD colorize will become future trend, and colored STN Super TN (C-STN) LCD is low power consumption and low price color panel product, present consumer electronics information products constantly towards miniaturization, Portable, with the design concept of common people's price etc. under, colored STN Super TN (C-STN) LCD will be still the important panel body of small-medium size colorize.
Seeing also Figure 1A, is the diagrammatic cross-section of a typical conventional liquid crystal 10.Described conventional liquid crystal 10 generally includes: a Liquid crystal module 11, and two Polarizers 12,13 (Polarizer) place the both side surface up and down of Liquid crystal module 11 respectively.Described Liquid crystal module 11 be by a glass substrate and be attached to glass substrate up and down the assemblies such as most liquid crystal molecules on two surfaces constituted.Polarizer 12 (or 13) then is to cover a light polarizing film 123 (or 133) with two transparency carriers 121,122 (or 131,132) folder to be constituted, and the polarisation function can be provided.
Yet, the conventional liquid crystal 10 shown in Figure 1A, the correlation curve of its angular field of view is shown in Figure 1B, it only has preferable visual effect in the vertical and horizontal direction, and in the view directions at miter angle or 135 degree angles, not only the contrast descends and color offset, has a strong impact on display quality.
After have the people to develop on LCD, to set up an optical compensation films, to improve the visual effect on the angle of inclination.See also Fig. 2, for having the diagrammatic cross-section of on LCD 20, setting up optical compensation plate 24 now.It mainly is between Liquid crystal module 21 and the Polarizer above it 22, additionally pastes an optical compensation plate 24, can produce the retardance of predetermined angular and direction to the light of specific wavelength, and then improve the display quality of LCD 20 on the angle of inclination.
For colored STN Super TN (C-STN) LCD (LCD), existing optical compensation technology mainly is utilization one Z-plate optical compensation films (being called for short Z-plate) between C-STN type Liquid crystal module 21 and the Polarizer 22 above it.The Z-plate that this is alleged is by after coating particular dye on the extensible film, imposes the biax extension elongation on x axle and the z direction of principal axis again, and reaches the optical compensation effect that nx＞nz＞ny is provided; Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness.
See also shown in Fig. 3 A to Fig. 3 C, it is the sectional view of the correlation curve figure of the angular field of view of setting up Z-plate on the existing C-STN type LCD and level, vertical angle of view scope.By learning on the figure, when utilization Z-plate between C-STN type Liquid crystal module 21 and the Polarizer 22 above it, the horizontal view angle scope is in-40 degree and 45 degree scopes, and the vertical angle of view scope is in-75 degree and 35 degree scopes.But because the existing Z-plate of this kind need carry out the processing procedure that twin shaft extends, its quality is not easy control, and cost of manufacture is quite expensive, therefore how to go to solve the above problems, and is that dealer institute is urgently at scheme of seeking to solve and improved place always.
Summary of the invention
The purpose of this invention is to provide a kind of optical compensation structure, it is by at least one liquid crystal (C+) compensate film at vertical orientation, and the R-plate uniaxial extension compensate film of arranging in pairs or groups, reach downwards angle of visibility compensation to C-STN type LCD, and make cost of manufacture relatively low, and the also more manageable effect of quality than prior art.
Another object of the present invention provides the liquid crystal indicator of the described optical compensation structure of a kind of tool, it is that optical compensation structure with aforementioned combination is used in C-STN type liquid crystal indicator, make C-STN type liquid crystal indicator colour cast problem is when improved on the angle of inclination, and the preferable display quality of tool.
In order to achieve the above object, the invention provides a kind of optical compensation structure, it is to be coincided mutually by at least one first optical compensation films and at least one second optical compensation films to constitute, and described optical compensation structure is to satisfy following optical condition formula:
nx＞nz＞ny；
0.05＜Nz＜0.3；
-20nm＞Rth(a)+Rth(b)＞-375nm；
And described first optical compensation films is to satisfy following optical condition formula: nz＞nx=ny; And described second optical compensation films is to satisfy following optical condition formula: nx＞nz=ny;
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Nz=(nx-nz)/(nx-ny); Rth (a) and Rth (b) then are the Rth values that is respectively described first optical compensation films and described second optical compensation films; Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
Described first optical compensation films and second optical compensation films more satisfy following optical condition formula:
-220nm＞Rth(a)＞-500nm；
250nm＜Ro(b)＜400nm；
125nm＜Rth(b)＜200nm；
Wherein, Ro (b) is the Ro value of described second optical compensation films, Ro=(nx-ny) * d.
More include mucigel between described first optical compensation films and second optical compensation films.
It is to have corresponding first side and second side for described second optical compensation films, and the quantity of described first optical compensation films is two, and is to be located at respectively on described first side and described second side.
The quantity of described first optical compensation films is two, and described two first optical compensation films are to fit on described second optical compensation films after coinciding mutually earlier again.More include a mucigel between described two first optical compensation films.
The present invention also provides a kind of liquid crystal indicator of tool optical compensation structure, and it is to include:
One Liquid crystal module includes a upper surface and a lower surface;
Polarizer on one, corresponding described upper surface setting;
Polarizer once, corresponding described lower surface setting;
At least one optical compensation structure is arranged between wherein the surface and a Polarizer wherein of Liquid crystal module at least, and described optical compensation structure is to satisfy following optical condition formula:
nx＞nz＞ny；
0.05＜Nz＜0.3；
-20nm＞Rth＞-375nm；
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Nz=(nx-nz)/(nx-ny); Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
Described optical compensation structure is more to include:
At least one first optical compensation films, it is to satisfy following optical condition formula:
nz＞nx＝ny；
-220nm＞Rth (a)＞-500nm; And
One second optical compensation films coincides mutually with described at least one first optical compensation films, and described second optical compensation films is to satisfy following optical condition formula:
nx＞nz＝ny；
250nm＜Ro(b)＜400nm；
125nm＜Rth(b)＜200nm；
Wherein, Rth (a) and Rth (b) then are the Rth values that is respectively described first optical compensation films and described second optical compensation films, and Ro (b) is the Ro value of described second optical compensation films, Rth=Rth (a)+Rth (b); Ro=(nx-ny) * d; Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
It is to have corresponding first side and second side for described second optical compensation films, and the quantity of described first optical compensation films is two, and is to be located at respectively on described first side and described second side.
The quantity of described first optical compensation films is two, and described two first optical compensation films are to fit on described second optical compensation films after coinciding mutually earlier again.
Description of drawings
Figure 1A is the diagrammatic cross-section of a typical conventional liquid crystal;
Figure 1B is the correlation curve figure of the angular field of view of the conventional liquid crystal shown in Figure 1A;
Fig. 2 has the diagrammatic cross-section of setting up optical compensation plate on LCD now;
Fig. 3 A is the correlation curve figure that sets up the angular field of view of Z-plate on the available liquid crystal display;
Fig. 3 B is a sectional view of setting up the horizontal view angle scope of Z-plate on the available liquid crystal display;
Fig. 3 C is a sectional view of setting up the vertical angle of view scope of Z-plate on the available liquid crystal display;
Fig. 4 A is the correlation curve figure that sets up the angular field of view of R-plate on the LCD;
Fig. 4 B is a sectional view of setting up the horizontal view angle scope of R-plate on the LCD;
Fig. 4 C is a sectional view of setting up the vertical angle of view scope of R-plate on the LCD;
Fig. 5 A is the optical compensation structure first preferred embodiment diagrammatic cross-section of the present invention;
Fig. 5 B is the optical compensation structure second preferred embodiment diagrammatic cross-section of the present invention;
Fig. 5 C is optical compensation structure the 3rd a preferred embodiment diagrammatic cross-section of the present invention;
Fig. 6 A is the diagrammatic cross-section of liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 B is the correlation curve figure of the Rth=-330nm angular field of view in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 C is the sectional view of the Rth=-330nm horizontal view angle scope in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 D is the sectional view of the Rth=-330nm vertical angle of view scope in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 E is the correlation curve figure of the Rth=-50nm angular field of view in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 F is the sectional view of the Rth=-50nm horizontal view angle scope in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 6 G is the sectional view of the Rth=-50nm vertical angle of view scope in liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention;
Fig. 7 A is the diagrammatic cross-section of liquid crystal indicator second preferred embodiment of tool optical compensation structure of the present invention;
Fig. 7 B is the correlation curve figure of the angular field of view in liquid crystal indicator second preferred embodiment of tool optical compensation structure of the present invention;
Fig. 8 A is the diagrammatic cross-section of liquid crystal indicator the 3rd preferred embodiment of tool optical compensation structure of the present invention;
Fig. 8 B is the correlation curve figure of the angular field of view in liquid crystal indicator the 3rd preferred embodiment of tool optical compensation structure of the present invention;
Fig. 9 A is the diagrammatic cross-section of liquid crystal indicator the 4th preferred embodiment of tool optical compensation structure of the present invention;
Fig. 9 B is the correlation curve figure of the angular field of view in liquid crystal indicator the 4th preferred embodiment of tool optical compensation structure of the present invention.
Description of reference numerals: 10,20～available liquid crystal display; 11,21～Liquid crystal module; 12,13,22,23～Polarizer; 121,122,131,132～transparency carrier; 123,133～light polarizing film; 24～optical compensation films; 3,3a, 3b, 3c～liquid crystal indicator; 31～Liquid crystal module; 311～upper surface; 312～lower surface; 32～upward Polarizers; 33～following Polarizer; 34,34a, 34b, 34c～optical compensation structure; 341～the first optical compensation films; 342～the second optical compensation films; 3421～the first sides; 3422～the second sides; 343,343a～mucigel; 35～pressure sensitive mucigel;
Embodiment
Optical compensation structure of the present invention and cardinal principle with liquid crystal indicator of this optical compensation structure, be the unitized construction of utilizing at least one liquid crystal (C+) compensate film and a R-plate uniaxial extension compensate film of homeotropic alignment, replace existing twin shaft and extend the uppity Z-plate of processing procedure.Thus, C-STN type liquid crystal indicator not only has preferable angular field of view and display quality because of having optical compensation effect, and easy to make, cost is low, also be easy to control of quality.
See also shown in Fig. 4 A to Fig. 4 C, it is for only setting up a R-plate uniaxial extension compensate film (being called for short R-plate) on C-STN type LCD, and when liquid crystal (C+) compensate film is not set, the sectional view of the correlation curve figure of its angular field of view and level, vertical angle of view scope.
Wherein, employed R-plate satisfies following optical condition formula in Fig. 4 A to Fig. 4 C illustrated embodiment:
nx＞nz＝ny；
250nm＜Ro＜400nm；
125nm＜Rth＜200nm；
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Ro=(nx-ny) * d; Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
By Fig. 4 A to Fig. 4 C as can be known, when not having liquid crystal (C+) compensate film when only set up a R-plate uniaxial extension compensate film on LCD, its horizontal view angle scope is in-50 degree and 60 degree scopes, and the vertical angle of view scope is only in-35 degree and 25 degree scopes.Though the vertical angle of view scope is more than little many of Z-plate, quality is controlled easily, and cost of manufacture is cheap.
See also shown in Fig. 5 A, it is the optical compensation structure first preferred embodiment diagrammatic cross-section of the present invention.It is to include for an optical compensation structure of the present invention 34: at least one first optical compensation films 341 and one second optical compensation films 342 that coincide mutually.And first optical compensation films 341 of the present invention is the liquid crystal compensation film of a vertical orientation, and is to satisfy following optical condition formula:
nz＞nx＝ny；
-220nm＞Rth(a)＞-500nm；
Can abbreviate liquid crystal (C+) compensate film by satisfying made described first optical compensation films 341 of aforesaid optical condition formula as in industry.
And second optical compensation films 342 is the uniaxial extension compensate film and is to satisfy following optical condition formula:
nx＞nz＝ny；
250nm＜Ro(b)＜400nm；
125nm＜Rth(b)＜200nm；
Can abbreviate R-plate by satisfying made described second optical compensation films 342 of aforesaid optical condition formula as in industry.
Because described optical compensation structure 34 of the present invention is repeatedly to be made of mutually aforesaid first optical compensation films 341 (liquid crystal (C+) compensate film) and second optical compensation films 342 (R-plate) institute, so described optical compensation structure 34 is to satisfy the following optical condition formula addition of optical condition formula of first and second optical compensation films 341,342 (just with):
nx＞nz＞ny；
-20nm＞Rth(a)+Rth(b)＞-375nm；
0.05＜Nz＜0.3；
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Nz=(nx-nz)/(nx-ny); Ro (b) is the Ro value of described second optical compensation films; Rth (a) and Rth (b) then are the Rth values that is respectively described first optical compensation films and described second optical compensation films; Rth={ (nx+ny)/2-nz}*d; Ro=(nx-ny) * d; And d is a thickness.
Shown in Fig. 5 A, in the optical compensation structure 34 of the present invention, only have single first optical compensation films 341, and described first optical compensation films 341 and described second optical compensation films 342 are fitted mutually with a mucigel 343.In present embodiment, described mucigel 343 can be a pressure sensitive viscose (PSA).
Again, in the embodiment of another manufacture of optical compensation structure 34 of the present invention, the manufacture of described optical compensation structure 34, also can select by on second optical compensation films 342 (A-plate) surface, applying a both alignment layers and a liquid crystal material layer in regular turn, make the combination of described both alignment layers and liquid crystal material come down on described second optical compensation films (A-plate) 342, directly to form described first optical compensation films 341 (C+Plate), so it there is no mucigel between the two or any other medium exists.
Shown in Fig. 5 B, in second preferred embodiment of optical compensation structure 34a of the present invention, described first optical compensation films 341 can have two for another example.And it is to have corresponding one first side 3421 and one second side 3422 for described second optical compensation films 342.And described two first optical compensation films 341 are to coincide respectively on described first side 3421 and described second side 3422.Then fit mutually by a mucigel 343 respectively between described two sides 3421,3422 and described two first optical compensation films 341.In like manner, in the embodiment of another manufacture of optical compensation structure 34a, we also can select another first optical compensation films 341 to be changeed paste on it again by after directly forming one deck first optical compensation films 341 earlier on second optical compensation films 342.Or we also can directly form described two first optical compensation films 341 on second optical compensation films 342.
In this second preferred embodiment, the addition summation of both optical condition formulas of described two first optical compensation films 341 (liquid crystal (C+) compensate film) is that to satisfy following condition be preferable:
nz＞nx＝ny；
-220nm＞Rth(a)＞-500nm。
And for example shown in Fig. 5 C, in the 3rd preferred embodiment of optical compensation structure 34b of the present invention, described first optical compensation films 341 has two and coincide mutually by a mucigel 343a.After, again two first optical compensation films 341 that coincide are mutually coincided mutually by another mucigel 343 and described second optical compensation films 342.In this 3rd preferred embodiment, the addition summation of both optical condition formulas of described two first optical compensation films 341 (liquid crystal (C+) compensate film) is that to satisfy following condition be preferable:
nz＞nx＝ny；
-220nm＞Rth(a)＞-500nm。
Certainly, among other embodiment that does not show in the drawings, the quantity of described first optical compensation films 341 is also three or more, quantity like that and arrangement mode are designed to those skilled in the art institute can be changed enforcement according to above-mentioned exposure, will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention, so do not add to give unnecessary details at this.
See also shown in Fig. 6 A, it is the diagrammatic cross-section of liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention again.The liquid crystal indicator 3 of tool optical compensation structure of the present invention, it is to include: Polarizer 32 on the Liquid crystal module 31,, once Polarizer 33 and at least one optical compensation structure 34.Described Liquid crystal module 31 includes a upper surface 311 and a lower surface 312.The described Polarizer 32 corresponding described upper surfaces 311 of going up are provided with.The described 33 corresponding described lower surfaces 312 of Polarizer down are provided with.In preferred embodiment of the present invention, described liquid crystal indicator 3 is preferable for colored STN Super TN (C-STN) LCD.Therefore, the Liquid crystal module 31 of the following stated also is that the liquid crystal panel with colored STN Super TN type (C-STN) is preferable (can abbreviate C-STN cell as in industry).Because to the consideration of Polarizer 32,33 optical characteristics and weatherability such as heat-resisting, wet, the polarizing film (for example existing P VA film) that is used for covering Polarizer 32, the 33 transparency carrier layer on two surfaces up and down can use surperficial TAC (Triacetyl Acetate Cellulose) plate after saponification is done in alkali treatment in the present invention.
In 3 first preferred embodiments of the liquid crystal indicator shown in Fig. 6 A, the quantity of described optical compensation structure 34,34c is two, and it coincides respectively in Liquid crystal module 31 upper surfaces and described upward between the Polarizer 32 and at Liquid crystal module 31 lower surfaces and described down between the Polarizer 33.And described two optical compensation structures 34,34c are to be that the center mirror is symmetrical arranged with described Liquid crystal module 31, that is described two optical compensation structures 34, first optical compensation films 341 that 34c had respectively then are relatively away from Liquid crystal module 31 than contiguous described Liquid crystal module 31 two the second optical compensation films 342 all.In addition, more include a mucigel 343 between the upper and lower surface of two optical compensation structures 34,34c and described Liquid crystal modules 31.And more include a pressure sensitive mucigel 35 (Pressure Sensitive Adhesive between described two optical compensation structures 34,34c and described last Polarizer 32 and the described following Polarizer 31; Be called for short PSA glue).
See also shown in Fig. 6 B to Fig. 6 G, it is the sectional view of the correlation curve figure of the angular field of view of liquid crystal indicator first preferred embodiment of tool optical compensation structure of the present invention and level, vertical angle of view scope.Can learn by Fig. 6 B to Fig. 6 D, when liquid crystal indicator 3 first preferred embodiments of the present invention are when satisfying Rth=-330nm in the optical condition of optical compensation structure 34, its horizontal view angle scope is in-55 degree and 40 degree scopes, and the vertical angle of view scope is in-40 degree and 30 degree scopes.On the other hand, then can understand by Fig. 6 E to Fig. 6 G, when the optical condition of the optical compensation structure 34 of liquid crystal indicator 3 of the present invention is when satisfying Rth=-50nm, its horizontal view angle scope is in-50 degree and 55 degree scopes, and the vertical angle of view scope is in-50 degree and 30 degree scopes.Compared to disclose as Fig. 3 A to Fig. 3 C the utilization Z-plate its horizontal view angle scope of prior art-40 the degree and 45 degree scopes in and the vertical angle of view scope-75 the degree and 35 degree scopes in; And, in Fig. 4 A to Fig. 4 C disclose only use its horizontal view angle scope of R-plate uniaxial extension compensate film-50 the degree and 60 degree scopes in and the vertical angle of view scope only-35 the degree and 25 degree scopes in.Clearly as seen, the present invention by with at least one liquid crystal (C+) compensate film (first optical compensation films 341) and a R-plate (second optical compensation films 342) institute mutually repeatedly optical compensation structure 34 uses of formation on colored STN Super TN (C-STN) LCD, the advantage that not only still has broad horizontal view angle scope, and it all has the advantage better than traditional Z-plate making on easiness, property with low cost and the quality controllable system.
In other preferred embodiment of the present invention of the following stated, because most of assembly is the same as or similar to aforesaid embodiment.So identical or similar assembly will give identical numeral number and component Name and repeat no more its detailed formation, and only be after former numeral number, to increase by an English alphabet as a means of difference.
See also shown in Fig. 7 A and Fig. 7 B, be the diagrammatic cross-section of liquid crystal indicator second preferred embodiment of tool optical compensation structure of the present invention and the correlation curve figure of angular field of view.In this liquid crystal indicator 3a second preferred embodiment, described optical compensation structure 34 is two, lays respectively at Liquid crystal module 31 upper surfaces and described upward between the Polarizer 32 and at Liquid crystal module 31 lower surfaces and described down between the Polarizer 33 with aligned identical order (second optical compensation films 342 is fitted in first optical compensation films, 341 tops by mucigel 343).Among the correlation curve figure by the described angular field of view of Fig. 7 B, can learn the horizontal view angle scope in-60 degree and 45 degree scopes, and the vertical angle of view scope is in-50 degree and 30 degree scopes.
Shown in Fig. 8 A and Fig. 8 B, be the diagrammatic cross-section of liquid crystal indicator the 3rd preferred embodiment of tool optical compensation structure of the present invention and the correlation curve figure of angular field of view.In this liquid crystal indicator 3b the 3rd preferred embodiment, described optical compensation structure 34c is two, lays respectively at Liquid crystal module 31 upper surfaces and described upward between the Polarizer 32 and at Liquid crystal module 31 lower surfaces and described down between the Polarizer 33 with aligned identical order (first optical compensation films 341 is fitted in second optical compensation films, 342 tops by mucigel 343).Among the correlation curve figure by the described angular field of view of Fig. 8 B, can learn the horizontal view angle scope in-40 degree and 80 degree scopes, and the vertical angle of view scope is in-40 degree and 30 degree scopes.
And shown in Fig. 9 A and Fig. 9 B, be the diagrammatic cross-section of liquid crystal indicator the 4th preferred embodiment of tool optical compensation structure of the present invention and the correlation curve figure of angular field of view.In this liquid crystal indicator 3c the 4th preferred embodiment, described optical compensation structure 34c, 34 is two, lay respectively at Liquid crystal module 31 upper surfaces and described upward between the Polarizer 32 and at Liquid crystal module 31 lower surfaces and described down between the Polarizer 33, and described two optical compensation structure 34c, 34 are that the center mirror is symmetrical arranged with described Liquid crystal module 31, and promptly described two second optical compensation films 342 all are that 31 two first optical compensation films 341 of contiguous described Liquid crystal module then are relatively away from Liquid crystal module 31 relatively.Among the correlation curve figure by the described angular field of view of Fig. 9 B, can learn the horizontal view angle scope in-60 degree and 60 degree scopes, and the vertical angle of view scope is in-40 degree and 30 degree scopes.
Comprehensively above-mentioned, as R-plate during, can increase the horizontal view angle scope near described Liquid crystal module 31, reduce partly vertical angle of view scope relatively; And liquid crystal (C+) compensate film can increase the vertical angle of view scope during near described Liquid crystal module 31, reduces partly horizontal view angle scope relatively.Can because of needs select for use R-plate near described Liquid crystal module 31 or liquid crystal (C+) compensate film near described Liquid crystal module 31, provide the user more more options space, and fabricating quality controls easily, improve the disappearance of selecting existing Z-plate for use especially.Certainly, in another embodiment not shown in the figures, the present invention also can the upper surface 311 of Liquid crystal module 31 and described between the Polarizer 32 or at Liquid crystal module 31 lower surfaces 312 and described down between the Polarizer 33, also can be provided with respectively as Fig. 5 B and the disclosed optical compensation structure 34a of Fig. 5 C, 34b.Arrangement mode like that is designed to those skilled in the art institute can be changed enforcement according to above-mentioned exposure, will not lose main idea of the present invention place, does not also break away from the spirit and scope of the present invention, so do not add to give unnecessary details at this.
But above-described embodiment shall not be applied to restriction range of application of the present invention, and protection scope of the present invention should be based on claim content institute's definition techniques spirit of the present invention and the impartial scope that is included that changes thereof.Promptly the equalization of doing according to claim of the present invention generally changes and modifies, and will not lose main idea of the present invention place, does not also break away from the spirit and scope of the present invention, and the former capital should be considered as further enforcement situation of the present invention.
Claims (10)
1, a kind of optical compensation structure, it is to be coincided mutually by at least one first optical compensation films and at least one second optical compensation films to constitute, described optical compensation structure is to satisfy following optical condition formula:
nx＞nz＞ny；
0.05＜Nz＜0.3；
-20nm＞Rth(a)+Rth(b)＞-375nm；
And described first optical compensation films is to satisfy following optical condition formula: nz＞nx=ny; And described second optical compensation films is to satisfy following optical condition formula: nx＞nz=ny;
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Nz=(nx-nz)/(nx-ny); Rth (a) and Rth (b) then are the Rth values that is respectively described first optical compensation films and described second optical compensation films; Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
2, optical compensation structure as claimed in claim 1 is characterized in that: described first optical compensation films and second optical compensation films more satisfy following optical condition formula:
-220nm＞Rth(a)＞-500nm；
250nm＜Ro(b)＜400nm；
125nm＜Rth(b)＜200nm；
Wherein, Ro (b) is the Ro value of described second optical compensation films, Ro=(nx-ny) * d.
3, optical compensation structure as claimed in claim 1 is characterized in that: more include mucigel between described first optical compensation films and second optical compensation films.
4, optical compensation structure as claimed in claim 1, it is characterized in that: it is to have corresponding first side and second side for described second optical compensation films, the quantity of described first optical compensation films is two, and is to be located at respectively on described first side and described second side.
5, optical compensation structure as claimed in claim 1 is characterized in that: the quantity of described first optical compensation films is two, and described two first optical compensation films are to fit on described second optical compensation films after coinciding mutually earlier again.
6, optical compensation structure as claimed in claim 5 is characterized in that: more include a mucigel between described two first optical compensation films.
7, a kind of liquid crystal indicator of tool optical compensation structure, it is to include:
One Liquid crystal module includes a upper surface and a lower surface;
Polarizer on one, corresponding described upper surface setting;
Polarizer once, corresponding described lower surface setting;
At least one optical compensation structure is arranged between wherein the surface and a Polarizer wherein of Liquid crystal module at least, and described optical compensation structure is to satisfy following optical condition formula:
nx＞nz＞ny；
0.05＜Nz＜0.3；
-20nm＞Rth＞-375nm；
Wherein, nx is that to be illustrated in refractive index, ny on the lip-deep x direction of principal axis be that to be illustrated in refractive index on the lip-deep y direction of principal axis and nz be refractive index on the z direction of principal axis that is illustrated on the thickness; Nz=(nx-nz)/(nx-ny); Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
8, the liquid crystal indicator of tool optical compensation structure as claimed in claim 7 is characterized in that: described optical compensation structure is more to include:
At least one first optical compensation films, it is to satisfy following optical condition formula:
nz＞nx＝ny；
-220nm＞Rth (a)＞-500nm; And
One second optical compensation films coincides mutually with described at least one first optical compensation films, and described second optical compensation films is to satisfy following optical condition formula:
nx＞nz＝ny；
250nm＜Ro(b)＜400nm；
125nm＜Rth(b)＜200nm；
Wherein, Rth (a) and Rth (b) then are the Rth values that is respectively described first optical compensation films and described second optical compensation films, and Ro (b) is the Ro value of described second optical compensation films, Rth=Rth (a)+Rth (b); Ro=(nx-ny) * d; Rth={ (nx+ny)/2-nz}*d; And d is a thickness.
9, the liquid crystal indicator of tool optical compensation structure as claimed in claim 8, it is characterized in that: it is to have corresponding first side and second side for described second optical compensation films, the quantity of described first optical compensation films is two, and is to be located at respectively on described first side and described second side.
10, the liquid crystal indicator of tool optical compensation structure as claimed in claim 8, it is characterized in that: the quantity of described first optical compensation films is two, and described two first optical compensation films are to fit on described second optical compensation films after coinciding mutually earlier again.
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| CN 200610072436 CN101055366A (en) | 2006-04-13 | 2006-04-13 | Optical compensation structure and liquid crystal display device with the optical compensation structure |
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| CN 200610072436 CN101055366A (en) | 2006-04-13 | 2006-04-13 | Optical compensation structure and liquid crystal display device with the optical compensation structure |
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| WO2015196501A1 (en) * | 2014-06-25 | 2015-12-30 | 深圳市华星光电技术有限公司 | Liquid crystal display device and optical compensation method for same |
| CN108563075A (en) * | 2018-03-15 | 2018-09-21 | 京东方科技集团股份有限公司 | Optical compensation films and display device |
| WO2020087634A1 (en) * | 2018-10-30 | 2020-05-07 | 惠科股份有限公司 | Optical composite film layer, display panel, and display device |
| 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 |
| WO2023168729A1 (en) * | 2022-03-07 | 2023-09-14 | Tcl华星光电技术有限公司 | Display device |
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- 2006-04-13 CN CN 200610072436 patent/CN101055366A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015196501A1 (en) * | 2014-06-25 | 2015-12-30 | 深圳市华星光电技术有限公司 | Liquid crystal display device and optical compensation method for same |
| CN108563075A (en) * | 2018-03-15 | 2018-09-21 | 京东方科技集团股份有限公司 | Optical compensation films and display device |
| CN108563075B (en) * | 2018-03-15 | 2021-08-27 | 京东方科技集团股份有限公司 | Optical compensation film and display device |
| WO2020087634A1 (en) * | 2018-10-30 | 2020-05-07 | 惠科股份有限公司 | Optical composite film layer, display panel, and display device |
| US11119359B2 (en) | 2018-10-30 | 2021-09-14 | HKC Corporation Limited | Optical composite film layer, display panel, and display device |
| 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 |
| CN112327538B (en) * | 2020-11-05 | 2023-03-28 | 北海惠科光电技术有限公司 | Display panel and display device |
| WO2023168729A1 (en) * | 2022-03-07 | 2023-09-14 | Tcl华星光电技术有限公司 | Display device |
| WO2023168732A1 (en) * | 2022-03-07 | 2023-09-14 | Tcl华星光电技术有限公司 | Polarizer and display apparatus |
| WO2023168779A1 (en) * | 2022-03-07 | 2023-09-14 | Tcl华星光电技术有限公司 | Display device |
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