compensation ( film )
24. a multilayer optical compensation film according to claim 1 wherein, the thickness of said compensation film is less than 50μm .
12. a multilayer optical compensation film according to claim 1 wherein, one or more alignment layers is disposed within the compensation film .
14. a multilayer optical compensation film according to claim 1 wherein, one or more barrier layer is disposed within the compensation film .
25. a multilayer optical compensation film according to claim 24 wherein, the thickness of said compensation film is from 4 to 45μm .
26. a multilayer optical compensation film according to claim 25 wherein, the thickness of said compensation film is from 5 to 20μm .
9. a multilayer optical compensation film according to claim 1 wherein, one or more adhesion promotion layers is disposed within the compensation film .
34. a passive optical compensation film product as set forth in claim 28 wherein the film product comprises more than one optical compensation layer .
an object of the present invention is to provide a liquid crystal display device having a compensation film and a fabrication method thereof, in which the compensation film is formed of a material having both functions of the compensation film and an alignment film .
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a second compensation film disposed on the lower substrate and material, the second compensation film for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer .
4. a display according to claim 1 wherein the compensation film comprises a positively birefringent material disposed on a base film .
fig. 21 is a cross - sectional representation of a second laminate film using the optical compensation film of the present invention .
meanwhile, instead of attaching the compensation film manufactured by the extending method, a method in which a compensation film is directly coated on a substrate has been proposed. fig. 2 is a schematic view of an lcd provided with a compensation film coating according to the related art .
15. the film of claim 1 or claim 2, wherein the film is a monolayer film or at least one layer of a multilayer film .
9. an optical compensation film product as set forth in claim 1 wherein the polymerization product is a production scale roll of film .
[ 27 ] the present invention relates to a negative c - type compensation film. the negative
field of the invention the present invention generally relates to optical compensation films and to liquid crystal displays containing optical compensation films. more particularly, the present invention relates to an optical compensations film containing two or more optically anisotropic layers, to a liquid crystal display containing an optical compensation film, and to a process of forming an optical compensation film .
as described above, according to an lcd having a cotable compensation film and fabrication method thereof, a material functions as an alignment film for aligning the liquid crystal molecules as well as a compensation film, thereby decreasing the number of the processes .
4. an optical compensation film product as set forth in claim 1 wherein the polymerization product is a film comprising a layer of a laminate .
11. an optical compensation film product as set forth in claim 1 wherein the film is from about 1 to about 25 microns in thickness .
2. an optical compensation film product as set forth in claim 1 wherein the polymerization is a photopolymerization .
13. an optical compensation film product as set forth in claim 1 wherein the mixture further comprises spacers .
27. a roll of optical compensation film set forth in claim 22 wherein the composite further comprises spacers .
figs. 1 to 5 are sectional views of structures of a compensation film according to the present invention .
24. a roll of optical compensation film as set forth in claim 23 wherein the film is from about 1 to about 25 microns in thickness .
25. a roll of optical compensation film as set forth in claim 24 wherein the film is from about 1 to about 20 microns in thickness .
30. a passive optical compensation film product as set forth in claim 28 wherein the film is from about 1 to about 25 microns in thickness .
33. a passive optical compensation film product as set forth in claim 28 wherein the film is from about 1 to about 25 microns in thickness .
24. the film of claim 1, wherein an out - of - plane retardation rth of the multilayer optical compensation film is greater than 20nm .
5. the film of claim 1, wherein the film comprises a block copolymer .
the present inventors have found polyarylate that is capable of being used for a negative c - type compensation film without a stretching process and has excellent adhesion force to other layers such as a transparent base substrate. therefore, an object of the present invention is to provide a compensation film that includes polyarylate capable of being used for the negative c - type compensation film without a stretching process, significantly reducing the thickness of the compensation film, and providing excellent interlayer adhesion force to a multilayered compensation film, and a method of preparing the same .
a second compensation film disposed on an inner surface of the lower substrate and including retarder material coating, the second compensation film being provided for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer .
8. an optical compensation film product as set forth in claim 4 wherein the film is from about 0. 5 to about 20 microns in thickness .
10. an optical compensation film product as set forth in claim 9 wherein the film is from about 0. 5 to about 50 microns in thickness .
25. the film of claim 1, wherein an out - of - plane retardation rth of the multilayer optical compensation film is between 30nm and 300nm .
26. the film of claim 1, wherein an out - of - plane retardation rth of the multilayer optical compensation film is between 40nm and 200nm .
17. a display according to claim 14 wherein the compensation film is disposed on a base film and wherein the tilt in the optic axis thereof varies .
35. a multilayer optical compensation film according to claim 1 wherein, the substrate of claim 8 is glass .
29. a passive optical compensation film product as set forth in claim 28 wherein the composite further includes spacers .
[ 0023 ] figs. 8a and 8b are diagrams of a compensation film placement with respect to the display .
13. a display according to claim 1 wherein the tilt in the optic axis of the compensation film varies .
to overcome the foregoing problems, a compensation film has been proposed for compensating for anisotropic distribution according to the viewing angle of the liquid crystal cell. the compensation film, being made of a polymer film, causes a change in a phase difference of a transmitted light. also, the compensation film is extended in a predetermined direction to cause birefringence due to anisotropic induction of the molecules .
23. a roll of optical compensation film as set forth in claim 22 wherein the film is from about 0. 5 to about 50 microns in thickness .
31. a passive optical compensation film product as set forth in claim 28 wherein the film is from about 0. 5 to about 22 microns in thickness .
16. a display according to claim 14 wherein the compensation film is disposed on a base film and wherein the tilt in the optic axis thereof is uniform .
however, when the lcd is formed using the compensation film coating, the process of forming the compensation film coating and the process of forming the alignment film for alignment of liquid crystal molecules are respectively performed, thereby increasing the number of processes used and resultantly decreasing the yield .
7. an optical compensation film product as set forth in claim 4 wherein the laminate further comprises an orientation layer .
12. a display according to claim 1 wherein the tilt in the optic axis of the compensation film is uniform .
2. a multilayer optical compensation film according to claim 1 wherein, at least one x layer comprises positively birefringent material .
3. a multilayer optical compensation film according to claim 1 wherein, at least one x layer comprises negatively birefringent material .
16. a multilayer optical compensation film according to claim 1 wherein, one or more z layers function as barrier layers .
17. a multilayer optical compensation film according to claim 1 wherein, one or more z layers function as alignment layers .
19. a multilayer optical compensation film according to claim 1 wherein, one or more x layers function as barrier layers .
20. a multilayer optical compensation film according to claim 1 wherein, one or more x layers function as alignment layers .
17. an optical cell as set forth in claim 14 which includes more than one layer of optical compensation film layer .
31. the display of claim 27, further comprising another multilayer compensation film located between the second polarizer and the cell .
disclosed are a negative c - type compensation film and a method of preparing the same. the negative c - type compensation film includes a) a base layer, and b) a polymer layer comprising polyarylate prepared by a method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives, the base layer and the polymer layer being sequentially layered. the compensation film is capable of being used for the negative c - type compensation film without a stretching process, significantly reduces the thickness of the compensation film, and has significantly improved interlayer adhesion force in a multilayer structure .
furthermore, the present invention provides a liquid crystal display having the negative c - type compensation film according to the invention .
[ 24 ] figs. 1 to 5 are sectional views of structures of a compensation film according to the present invention .
in another aspect, a liquid crystal display device comprises an upper substrate; a lower substrate; a liquid crystal layer disposed between the upper substrate and the lower substrate; a first compensation film disposed on the upper substrate, the first compensation film for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer; and a second compensation film disposed on the lower substrate and material, the second compensation film for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer .
15. a multilayer optical compensation film according to claim 1 wherein, one or more z layers function as adhesion promotion layers .
18. a multilayer optical compensation film according to claim 1 wherein, one or more x layers function as adhesion promotion layers .
21. a reflective liquid display as set forth in claim 18 which includes more than one layer of optical compensation film layer .
birefringent elements, e. g. for optical compensation characterized by the wavelength dispersion
[ 13 ] the present inventors have found polyarylate that is capable of being used for a negative c - type compensation film without a stretching process and has excellent adhesion force to other layers such as a transparent base substrate. therefore, an object of the present invention is to provide a compensation film that includes polyarylate capable of being used for the negative c - type compensation film without a stretching process, significantly reducing the thickness of the compensation film, and providing excellent interlayer adhesion force to a multilayered compensation film, and a method of preparing the same. technical solution [ 14 ] in order to accomplish the above object, the present invention provides a negative
6. an optical compensation film product as set forth in claim 4 wherein the laminate further comprises a layer of indium tin oxide .
[ 12 ] a liquid crystal display having the negative c - type compensation film according to any one of claims 1 to 10 .
8. a multilayer optical compensation film according to claim 1 wherein, the layers x and the layers z are disposed on a substrate .
13. a multilayer optical compensation film according to claim 12 wherein, at least one of the alignment layers functions also as barrier layer .
5. an optical compensation film product as set forth in claim 4 wherein the laminate further comprises a layer of a pressure sensitive adhesive .
3. a display according to claim 1 wherein the compensation film is disposed between the bend aligned nematic liquid crystal cell and the polarizer .
[ 23 ] furthermore, the present invention provides a liquid crystal display having the negative c - type compensation film according to the invention .
if a company has no employees the company may submit a workers compensation waiver letter .
10. a multilayer optical compensation film according to claim 9 wherein, at least one of the adhesion promotion layers functions also as alignment layer .
11. a multilayer optical compensation film according to claim 9 wherein, at least one of the adhesion promotion layers functions also as barrier layer .
21. a multilayer optical compensation film according to claim 1 wherein, the thickness of each z layer is from 0. 1 to 20μm .
3. an optical compensation film product as set forth in claim 2 wherein the photopolymerization is initiated by the application of ultra - violet light .
next, a method of fabricating an exemplary lcd having a compensation film coating will be described with reference to figs. 4a through 4d. figs. 4a through 4d are flow diagrams illustrating a method of fabricating an lcd having a compensation film according to an exemplary configuration the present invention .
5. a display according to claim 1 wherein the compensation film comprises a first positively birefringent material disposed on a base film and a second positively birefringent material disposed on the said first positively birefringent material .
aminaka e, hayashi h, nakayama h, ishiguro m, saitoh y, ito y, mihayashi k, kishima m, tanaka h (2010) development of low haze va compensation tac film and proposal of compensation film arrangement for improving cr in va panel. sid’10 dig 41: 822
each film maker attending will have an opportunity for questions and answers with our audience following the presentation of their film .
subsequently, the cast film is dried to produce the compensation film. since internal stress occurs due to shrinkage of the film during the drying of the film, it is necessary to reduce the shrinkage to minimize the occurrence of the birefringence in surface direction. accordingly, in the present invention, it is preferable that the drying of the cast film be performed while the dimension of the cast film is constant. in the embodiment of the present invention, the cast film is dried while being fixed to a frame which is designed so that force is uniformly applied to the entire cast film, thereby preparing the polyarylate compensation film having the minimized internal stress. the drying may be performed at, for example, about 150° c. , so that the content of solvent remaining in the compensation film is 0. 05% or less. further, during the drying of the cast film, the drying temperature may be increased stepwise to prevent the film from being sagged at high temperatures, thereby preparing the film having the flat surface .
10. a display according to claim 2 wherein the compensation film is disposed between the bend aligned nematic liquid crystal cell and one of the polarizers .
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[ 47 ] subsequently, the cast film is dried to produce the compensation film. since internal stress occurs due to shrinkage of the film during the drying of the film, it is necessary to reduce the shrinkage to minimize the occurrence of the birefringence in surface direction. accordingly, in the present invention, it is preferable that the drying of the cast film be performed while the dimension of the cast film is constant. in the embodiment of the present invention, the cast film is dried while being fixed to a frame which is designed so that force is uniformly applied to the entire cast film, thereby preparing the polyarylate compensation film having the minimized internal stress. the drying may be performed at, for example, about 150°c, so that the content of solvent remaining in the compensation film is 0. 05% or less. further, during the drying of the cast film, the drying temperature may be increased stepwise to prevent the film from being sagged at high temperatures, thereby preparing the film having the flat surface .
during the production of the compensation film of the present invention, a small amount of additive may be used to improve weatherability, thermal stability, and surface property of the film, or to improve adhesion force .
next, as shown in fig. 4b, the cured alignment film is alignment - treated by irradiating polarized or unpolarized ultraviolet rays or an ion beam onto the alignment film. at this time, by variably adjusting an alignment direction of the alignment film, an optical axis of a compensation film being formed later may have a predetermined angle with respect to an advancing direction of the film. alternatively, the alignment film may be aligned by a rubbing method .
23. a multilayer optical compensation film according to claim 22 wherein, the thickness of each z layer is from 2. 0 to 8. 0μm .
12. an optical compensation film product as set forth in claim 1 wherein the amount of the reactive monomer is from about 5 to about 60% .
22. a multilayer optical compensation film according to claim 21 wherein, the thickness of each z layer is from 1. 0 to 10. 0 μm .
26. a roll of optical compensation film as set forth in claim 22 wherein the amount of the reactive monomer is from about 5 to about 60% .
fig. 3 is a view schematically showing a construction of a liquid crystal display device having a compensation film coating according to an embodiment of the present invention .
the present invention relates to a negative c - type compensation film. the negative c - type compensation film has a polymer layer that includes polyarylate prepared using a method comprising the step of copolymerizing divalent phenol, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives of the above formula (2) on a base layer .
monstrosity
won best indie film at the los angeles film awards and an
honorable mention
for cinematography and acting .
[ 48 ] during the production of the compensation film of the present invention, a small amount of additive may be used to improve weatherability, thermal stability, and surface property of the film, or to improve adhesion force .
the present invention relates to a negative c - type compensation film and a method of preparing the same. more particularly, the present invention pertains to a negative c - type compensation film, which is capable of being used without a stretching process and has a significantly reduced thickness and significantly improved interlayer adhesion force when the film has a multilayer structure, and a method of preparing the same .
32. a passive optical compensation film product as set forth in claim 28 wherein the amount of reactive monomer is from about 5 to about 60% by weight .
indexing scheme related to g02f1 / 13363, i. e. to birefringent elements, e. g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
example 2: fig. 7d shows the iso - leakage plot of crossed polarizers with ips mode liquid crystal when compensation films were applied. the arrangement is the same as shown in fig. 6. the compensation film includes one first layer and one second layer. the first layer of the compensation film is a stretched cyclic polyolephin having indices of refraction, nxj = 1. 5316, ny ] = 1. 5307 and nz 5
16. the film of claim 5 or claim 6, wherein the film further comprises an amount of a non - block copolymer .
[ 0020 ] figs. 5a and 5b show structures of compensation film with uniform tilt in optic axis. they are equivalent through the 90° rotation around the γ axis .
22. a method of forming a display of claim 1 wherein the orientation of the optic axis of positively birefringent materials in the compensation film is accomplished using mechanical rubbing .
23. a method of forming a display of claim 1 wherein the orientation of the optic axis of positively birefringent materials in the compensation film is accomplished using shear forces .
[ 1 ] the present invention relates to a negative c - type compensation film and a method of preparing the same. more particularly, the present invention pertains to a negative c - type compensation film, which is capable of being used without a stretching process and has a significantly reduced thickness and significantly improved interlayer adhesion force when the film has a multilayer structure, and a method of preparing the same .
depending on their category, the businesses were offered $ 60, $ 100 or $ 125 in compensation .
ms woodhouse appealed the cica’s initial refusal and was eventually offered the maximum amount of compensation she qualified for .
21. a method of forming a display of claim 1 wherein the orientation of the optic axis of positively birefringent materials in the compensation film is accomplished using photo - alignment .
10. the negative c - type compensation film according to claim 1, further comprising a surface reforming layer between the base layer a) and the polymer layer b) .
22. the film of claim 1 or claim 2, further comprising a coating on at least one major planar surface of the film .
production companies requesting to film on state owned or operated property must submit all of the following insurance documentation when applying for a film permit .
next, as shown in fig. 4c, a retarder film coating including reactive mesogen is coated on the alignment - treated alignment film .
a compensation film according to the present invention includes a polyarylate layer comprising the polyarylate that is prepared by copolymerizing divalent phenols, aromatic carboxylic acids, and allyl bisphenol derivatives. since the polyarylate layer has high negative birefringence, the layer may be used as a negative c - type compensation film for increasing a viewing angle of a liquid crystal display without the stretching process. furthermore, the thickness of the polyarylate layer is controlled to easily adjust a phase difference. thereby, it is possible to produce the compensation film having the desired phase difference and to significantly reduce the thickness of the compensation film. additionally, since the double bond or the functional group is provided to the main chain of the polymer as well as the ends of the polymer in polyarylate, it is possible to improve interlayer adhesion force through chemical bonding to the base substrate or the protective layer in the multilayered compensation film .
“hollywood is the most rich and famous company in the world, so they might have given enough compensation to business owners at a reasonable price, but now the authorities just offer very little compensation, ” he said .
if liquid crystal molecules are aligned in an identical direction to an alignment direction of the alignment film, the compensation film has an identical refractive index distribution to that of the liquid crystal molecules. accordingly, if a birefringence (δn) of the liquid crystal molecules is 0. 133, a birefringence (δn) of the fabricated compensation film is 0. 133, which is equal to the birefringence of the liquid crystal molecules .
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27. a display comprising a) a liquid crystal cell, b) at least one polarizing element, and c) at least one optical compensation film according to claim 1 .
[ 10 ] the negative c - type compensation film according to claim 1, further comprising a surface reforming layer between the base layer a) and the polymer layer b) .
industrial applicability [ 93 ] a compensation film according to the present invention includes a polyarylate layer comprising the polyarylate that is prepared by copolymerizing divalent phenols, aromatic carboxylic acids, and allyl bisphenol derivatives. since the polyarylate layer has high negative birefringence, the layer may be used as a negative c - type compensation film for increasing a viewing angle of a liquid crystal display without the stretching process. furthermore, the thickness of the polyarylate layer is controlled to easily adjust a phase difference. thereby, it is possible to produce the compensation film having the desired phase difference and to significantly reduce the thickness of the compensation film. additionally, since the double bond or the functional group is provided to the main chain of the polymer as well as the ends of the polymer in polyarylate, it is possible to improve interlayer adhesion force through chemical bonding to the base substrate or the protective layer in the multilayered compensation film .
a similar experiment was carried out by using zli - 2806 (low wavelength dispersion, 10 - micron film) as a guest lc for hybrid retardation film. fig. 16 shows the wavelength dependence of retardation for the film - compensated reflective display. once again the device is that shown in fig. 15 except that the first compensation film uses a combination of zli 2862 and bl006, and the second film uses zli 2806. the dispersion characteristic gives much better agreement with the ideal line (the ideal compensation films) in the whole wavelength region in comparison with the combination of medium wavelength dispersion film and high wave dispersion cell (example 4) .
11. a display according to claim 2 wherein there is a compensation film disposed on each side of the bend aligned nematic liquid crystal cell between the cell and each of the polarizers .
24. a method of forming a display of claim 1 wherein the orientation of the optic axis of positively birefringent materials in the compensation film is accomplished using electric or magnetic field effects .
the present invention relates to a liquid crystal display device and fabrication method thereof, and more particularly, to a liquid crystal display device having a compensation film and a fabrication method thereof .
meanwhile, ep no. 1469328 discloses that a transparent optical film of polyimide is applied on a tac (triacetyl cellulose) film to obtain uniform compensation and to remove irregularity causing rainbow - colored rays. jp - a - 2001 - 194668 discloses a compensation film that is prepared by layering stretched polycarbonate films. however, the production requires a complicated layering process and also requires optic axes which are perpendicular to each other when two films are layered .
getting the
sync rights
would both compensate the artists and allow grahsler and lozano to shop their film to distributors—prior to this, it had only been screened at a few film festivals, including the maryland film festival .
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furthermore, the present invention provides a method of preparing the negative c - type compensation film. the method includes a) mixing polyarylate, which is prepared by the method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives of the formula (2), and an organic solvent to prepare a polyarylate solution, b) applying the polyarylate solution on a base substrate, and volatilizing a solvent to produce a cast film, and c) drying the case film to produce the compensation film .
birefringent elements, e. g. for optical compensation with refractive index ellipsoid inclined relative to the lc - layer surface
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he was jailed for 35 years but the criminal injuries compensation authority (cica) did not immediately recognise his crimes .
[ 10 ] meanwhile, ep no. 1469328 discloses that a transparent optical film of polyimide is applied on a tac (triacetyl cellulose) film to obtain uniform compensation and to remove irregularity causing rainbow - colored rays. jp - a - 2001 - 194668 discloses a compensation film that is prepared by layering stretched polycarbonate films. however, the production requires a complicated layering process and also requires optic axes which are perpendicular to each other when two films are layered .
in the following, preferable optical properties of the optical compensation film, such as the thickness and the optic axis tilt are given. as described above, the compensation scheme is two fold: first, to optically compensate the liquid crystal cell, and, secondly, to prevent light leakage from the crossed polarizers .
7. a multilayer optical compensation film according to claim 1 wherein, the azimuthal angle φ of the optic axis of at least one x layer changes in the thickness direction of the x layers .
in more detail, to form the first and second compensation films 23 and 13, an alignment film is first formed and then subjected to an alignment treatment process, thereby allowing an optical axis of the compensation films to have an arbitrary angle. after that, a curable liquid crystal having a retarder material coating is coated on the alignment - treated alignment film. the curable liquid crystal is cured using ultraviolet rays to be adhered as a film on each of the substrates .
[ 22 ] furthermore, the present invention provides a method of preparing the negative c - type compensation film. the method includes a) mixing polyarylate, which is prepared by the method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives of the formula (2), and an organic solvent to prepare a polyarylate solution, b) applying the polyarylate solution on a base substrate, and volatilizing a solvent to produce a cast film, and c) drying the case film to produce the compensation film .
as shown in fig. 2, an lcd 1 having a compensation film coating includes an upper substrate 20 provided with a color filter layer 22 formed thereon, and a lower substrate 10 provided with thin film transistors 12 formed thereon. the upper substrate 20 is spaced apart by a predetermined distance from the lower substrate 10, and a liquid crystal layer 30 is disposed between the upper substrate 20 and the lower substrate 10. first and second polarizing plates 21 and 11 are respectively disposed on outer surfaces of the upper substrate 20 and the lower substrate 10. first and second compensation films 23 and 13 are respectively coated on outer surfaces of the upper substrate 20 and the lower substrate 10. the lcd 1 further includes a first alignment film 24 formed on the first compensation film 23 for initially aligning liquid crystal molecules of the liquid crystal layer 30, and a second alignment film formed on the second compensation film 13 for initially aligning liquid crystal molecules of the liquid crystal layer 30. the first and second compensation films 23 and 13 are formed by coating a retarder material .
[ 55 ] the compensation film of the present invention may further include a surface reforming layer if necessary. the surface reforming layer 40 may be interposed between a base layer 10 and a protective layer 20 as shown in figs. 2 and 4, or between the base layer 10 and a polyarylate layer 30. [ 56 ] the compensation film according to the present invention has a phase difference of
ryanair could be hit with a £17 million compensation bill after the airline infuriated thousands of customers by cancelling hundreds of flights .
the airline is now facing a huge pay out in compensation, estimated at 20 million euros - £17. 7 million .
chen j, kim k - h, jyu j - j, soukjh, kelly jr, bos pj (1998) optimum film compensation modes for tn and va lcds. sid’98 dig 29: 315
6. a multilayer optical compensation film according to claim 1 wherein, the azimuthal angle φ of the optic axis of at least one x layer is constant in the thickness direction of the x layers .
to characterize the vac of the current invention, isocontrast plots for displays 100 configurations figs. 7a and 7b are shown in figs. 9a and 9b. for both cases, the inner structure of the compensation films 55 a and 55 b is that of compensation film 55 shown in fig. 6c. comparable results are obtained with other film structures, for example, one shown in fig. 5a .
20. the liquid crystal display according to claim 12, wherein the negative c - type compensation film further comprises a surface reforming layer between the base layer a) and the polymer layer b) .
several special forms are required to film in this jurisdiction. see items below .
my name is [ your full name ]. i’m an independent film producer .
us2003 / 0086033). the compensation film according to the current invention can be easily manufactured. the following specific examples are presented to particularly illustrate the invention and should not be construed to place limitations thereon .
36. a multilayer optical compensation film according to claim 1 wherein, the substrate of claim 8 is comprised of triacetylcellulose, (tac), cellulose acetate butyrate (cab), polycarbonate or cyclic polyolefin .
accordingly, the present invention is directed to a liquid crystal display device having a compensation film coating and fabrication method thereof that substantially obviates one or more problems due to limitations and disadvantages of the related art .
data in table 2 also demonstrate that melt processing conditions help determine whether a hydrogenated styrenic block copolymer film has an optical retardation that makes the film suitable for use as a compensation film. as shown by comp ex a - b relative to ex 2 through ex 4, all of which use the same resin, melt casting a film at a melt or extrusion temperature that is too high with respect to to dt (+ 36 0 c for comp ex a and + 45 0 c for comp ex b) leads to an unstretched film retardation (r 0) that is too low to be useful in compensation film applications whereas melt casting at a lower temperature (+ 11 0 c for ex 2, + 20 0 c for ex 3 and + 28 0 c for ex 4) provides an unstretched r 0 that is useful for compensation film applications. skilled artisans recognize that orientation or stretching of the films of comp ex a and comp ex b may increase the r 0 value sufficient to make them useful in compensation film applications. skilled artisans also recognize that orientation or stretching adds to cost of manufacture. ex 24 - 33 and cex f
a multilayer optical compensation film comprises one or more optically anisotropic layers x and one or more optically anisotropic layers z wherein, said each layer x has its optic axis tilted with respect to the plane of said multilayer compensation film, and said each layer z comprises amorphous polymer with glass transition temperature tg above 180c°. the film is readily manufactured and provides the required optical property for proper compensation of lcds. each layer z satisfies the following two relations: | nx - ny | < 0. 001 (1); δnth = nz - (nx + ny) / 2 < - 0. 005 (2) .
film festivals are as good as their programmers and audiences, and the deadcenter film festival has an abundance of excellence in both. from the very first ...
[ 11 ] a method of preparing the negative c - type compensation film according to any one of claims 1 to 7, the method comprising: a) mixing polyarylate, which is prepared by copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and 0. 01 to 49. 9 mol% of allyl bisphenol derivatives of the formula (2), and an organic solvent to prepare a polyarylate solution; b) applying the polyarylate solution on a base substrate, and volatilizing a solvent to produce a cast film; and c) drying the case film to produce the compensation film ,
a liquid crystal display device includes an upper substrate; a lower substrate separated from the upper substrate; a liquid crystal layer between the upper substrate and the lower substrate; a first polarizing plate on a surface of the upper substrate; a second polarizing plate on a surface of the lower substrate such that a first optical axis of the first polarizing plate is substantially perpendicular to a second optical axis of the second polarizing plate; a first compensation film on an inner surface of the upper substrate and including a retarder material coating, the first compensation film being provided for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer; and a second compensation film on an inner surface of the lower substrate and including retarder material coating, the second compensation film being provided for compensating for anisotropic distribution and aligning liquid crystal material of the liquid crystal layer .
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figs. 1a through 1c show a refractive anisotropic ellipsoid of a phase difference compensation film. as shown in figs. 1a through 1c, when assuming that refractive indexes in x, y, z - direction of a cartesian coordinate are n x, n y and n z, the uniaxial property and the biaxial property are determined by sizes of n x and n y. in other words, as shown in fig. 1a, when refractive indexes in two directions are identical to each other but different than the refractive index in the remaining direction, it is called ‘uniaxial property’. the commonly used compensation film using a uniaxial refractive index anisotropic material has a long axis of an ellipsoid, which is parallel to or perpendicular to a surface of a film. the compensation film may be manufactured by extending a polymer film uniaxially or biaxially to obtain a desired birefringence such that an optical axis of the phase difference film has an arbitrary angle with respect to an advancing direction of the film .
wherein r th is a phase difference in thickness direction, n x and n y are refractive indexes of the film in surface direction, n z is a refractive index of the film in thickness direction, and d is a thickness of the film .
wherein n z is a refractive index of the film in thickness direction, n x and n y are refractive indexes of the film in surface direction, d is a thickness of the film, and r th is the phase difference in thickness direction .
wherein n z is a refractive index of the film in thickness direction, n x and n y are refractive indexes of the film in surface direction, d is the thickness of the film, and r th is the phase difference in thickness direction .
6. the film of claim 2, wherein the polymer is a block copolymer .
24. a liquid crystal display comprising the film of claim 1 or claim 2 .
27. a polarizer assembly comprising the film of any of claims 1 through 23 .
saitoh y, kimura s, kusafuka k, shimizu h (1998) optimum film compensation of viewing angle of contrast in in - plane - switching - mode liquid crystal display. jpn j appl phys 37: 4822
field of the invention the present invention relates to a multilayer optical compensation film useful for a liquid crystal display comprising one or more optically anisotropic layers x and one or more optically anisotropic layers z wherein, said each layer x has their optic axis tilted with respect to the plane of said multilayer compensation film, and said each layer z comprises amorphous polymer with glass transition temperature, tg, above 180c°, and satisfy two specified relations .
in another aspect, a method of fabricating a liquid crystal display device comprises forming an alignment film on a substrate; curing the formed alignment film; performing an alignment treatment of the alignment film; coating a liquid crystal material including reactive mesogen on the alignment - treated alignment film; and performing an alignment treatment of the coated liquid crystal material .
as shown in tables 1 and 2, the phase difference was easily controlled by the thickness of the film, and the polyarylate layer of the present invention had the phase difference enough to use the polyarylate layer as the compensation film even though the thickness of the polyarylate layer of the present invention was reduced .
59c relative humidity for a period of 24 hours, sufficient to limit dimensional changes to less than 1% percent in at least one of film length and film width directions .
ishiguro m, sekiguchi m, saitoh y (2010) new approach to enhance contrast ratio at normal incidence by controlling the retardation of optical compensation film in vertically aligned liquid crystal displays. jpn j appl phys 49: 030208
the cica administers the criminal injuries compensation scheme, which awards taxpayer - funded payments to blameless victims injured as a result of violent crime .
15. the liquid crystal display device of claim 14, wherein the first and second compensation films include retarder material coatings of reactive mesogen .
1. a display comprising a bend aligned nematic liquid crystal cell, a polarizer, and a compensation film containing a positively birefringent material oriented with its optic axis tilted in a plane perpendicular to the liquid crystal cell surface plane .
8. the negative c - type compensation film according to claim 1, further comprising a protective layer on at least one side of the base layer and / or at least one side of the polymer layer formed of polyarylate .
3. the film of claim 1, wherein said first and second layers are contiguous .
4. the film of claim 2, wherein the crystallinity is at least one percent .
26. an image display device comprising the film of any of claims 1 through 23 .
a concert of cinematic music at the 2014 black nights film festival. photograph by vladislava snurnikova
thank you gareth, for attending, speaking, and sharing such a powerful touching film .
we’re doing a [ short film ] that we’re going to be submitting to film festivals and online. we’re going to be shooting in june. we need the use of a convenience store for a couple of scenes, and we’d like to film in your store. ”
from the criteria of optical design listed above, zli - 2861 (medium wavelength dispersion, 10 - micron film) and bl006 (high wave length dispersion) were used for hybrid retardation film and hybrid lc cell, respectively. the wave length dispersion at black state was evaluated. fig. 14 shows the wavelength dependence on retardation at black state, the black line shows the dispersion line for an ideal compensation film. it was found that reversed wave length dispersion could be obtained using the combined hybrid film and cell shown in fig. 15 at 50, and comprised of a detector 52, a first hybrid polymer stabilized compensation film 54 and a second hybrid stabilized compensation film 56. in this example, the first film uses bl006 as the guest lc, and zli 2861 as the second guest lc. furthermore, the dispersion characteristic becomes closer to the ideal one in the short wavelength region to optimize the retardation value of the retardation film. however, the deviation from the ideal line was observed in the long wavelength region, because the wavelength of dispersions of zli - 2861 and bl006 in the high wavelength region was almost the same .
the present invention provides a method of preparing a negative c - type compensation film using the above - mentioned polyarylate. in detail, the method of the present invention includes a) mixing polyarylate, which is prepared by the method comprising the step of copolymerizing divalent phenol, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives of the above formula (2), and an organic solvent to prepare a polyarylate solution, b) applying the polyarylate solution on a base substrate, and volatilizing the solvent to produce a cast film, and c) drying the case film to produce the compensation film. the steps will be described in detail .
[ 88 ] as shown in tables 1 and 2, the phase difference was easily controlled by the thickness of the film, and the polyarylate layer of the present invention had the phase difference enough to use the polyarylate layer as the compensation film even though the thickness of the polyarylate layer of the present invention was reduced.
compensation is award-winning independent film about a young african american couple at the beginning and end of the twentieth century . the film is produced and directed by zeinabu irene davis and the screen play was written by marc arthur chéry . it stars michelle a. banks and john earl jelks in the leading roles . the film was shot throughout chicago beginning july 1993 and wrapped up early august . the film premièred at the 2000 sundance film festival and ran in the dramatic feature category . the film was screened in san diego , california at the museum of photographic arts . it was also screened at ifp the independent film market in new york , new york and the pan african film festival in los angeles . 
compensation is award-winning independent film about a young african american couple at the beginning and end of the twentieth century. the film is produced and directed by zeinabu irene davis and the screen play was written by marc arthur chéry. it stars michelle a. banks and john earl jelks in the leading roles. the film was shot throughout chicago beginning july 1993 and wrapped up early august. the film premièred at the 2000 sundance film festival and ran in the dramatic feature category. the film was screened in san diego, california at the museum of photographic arts. it was also screened at ifp the independent film market in new york, new york and the pan african film festival in los angeles.
compensation is award-winning independent film about a young african american couple at the beginning and end of the twentieth century. the film is produced and directed by zeinabu irene davis and the screen play was written by marc arthur chéry. it stars michelle a. banks and john earl jelks in the leading roles. the film was shot throughout chicago beginning july 1993 and wrapped up early august. the film premièred at the 2000 sundance film festival and ran in the dramatic feature category. the film was screened in san diego, california at the museum of photographic arts. it was also screened at ifp the independent film market in new york, new york and the pan african film festival in los angeles.