Anisotropic spectral scattering films, polarizers and liquid crystal displays
First Claim
Patent Images
1. An anisotropic spectral scattering film wherein the scattered light intensity Fx(λ
- , θ
) at azimuthal angle θ and
incident wavelength λ
in an arbitrary scattering plane with respect to a film surface and the scattered light intensity Fy(λ
, θ
) at azimuthal angle θ and
incident wavelength λ
in a scattering plane orthogonal to said scattering plane satisfy the following equations (1) and (2);
Fx(λ
, θ
)/Fx(545, θ
)≧
1.2
(1)
{Fx(λ
, θ
)/Fx(545, θ
)−
Fy(λ
, θ
)/Fy(545, θ
)}≧
0.1
(2) provided that λ
is 435 or 610 nm and θ
is an arbitrary angle selected from 30-70°
.
3 Assignments
0 Petitions
Accused Products
Abstract
A novel anisotropic spectral scattering film is disclosed. The scattered light intensity Fx(λ, θ) at azimuthal angle θ and incident wavelength λ in an arbitrary scattering plane with respect to a surface of the film, and the scattered light intensity Fy(λ,θ) at azimuthal angle θ and incident wavelength λ in a scattering plane orthogonal to said scattering plane satisfy the following equations (1) and (2):
Fx(λ, θ)/Fx(545, θ)≧1.2 (1)
{Fx(λ, θ)/Fx(545, θ)−Fy(λ, θ)/Fy(545, θ)}≧0.1 (2) provided that λ is 435 or 610 nm and θ is an arbitrary angle selected from 30-70°.
50 Citations
13 Claims
-
1. An anisotropic spectral scattering film wherein the scattered light intensity Fx(λ
- , θ
) at azimuthal angle θ and
incident wavelength λ
in an arbitrary scattering plane with respect to a film surface and the scattered light intensity Fy(λ
, θ
) at azimuthal angle θ and
incident wavelength λ
in a scattering plane orthogonal to said scattering plane satisfy the following equations (1) and (2);
Fx(λ
, θ
)/Fx(545, θ
)≧
1.2
(1)
{Fx(λ
, θ
)/Fx(545, θ
)−
Fy(λ
, θ
)/Fy(545, θ
)}≧
0.1
(2)provided that λ
is 435 or 610 nm and θ
is an arbitrary angle selected from 30-70°
.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
{Fx(λ
, θ
)/Fx(545, θ
)−
1}{Fy(λ
, θ
)/Fy(545, θ
)−
1}<
0
(3)provided that λ
is 435 or 610 nm and θ
is an arbitrary angle selected from 30-70°
.
- , θ
-
3. The anisotropic spectral scattering film of claim 1 comprising a one-dimensional diffraction grating or photonic crystal structure at least partially.
-
4. The anisotropic spectral scattering film of claim 1 comprising shape-anisotropic particles dispersed in the film.
-
5. The anisotropic spectral scattering film of claim 1 comprising a shape-anisotropic relief on the surface.
-
6. The anisotropic spectral scattering film of claim 1 comprising a spectrally anisotropic scattering layer having a continuous phase consisting of a light-transmitting resin and a disperse phase having an aspect ratio of 2 to 20 wherein the refractive index difference between said continuous phase and said disperse phase is 0.03 to 0.30.
-
7. The anisotropic spectral scattering film of claim 1 further comprising a low-refractive index layer having a refractive index of 1.35 to 1.45.
-
8. A polarizer comprising at least polarizing film and an anisotropic spectral scattering film of claim 1.
-
9. The polarizer of claim 8 further comprising an optical compensation film on a different side of said polarizing film from the side having said anisotropic spectral scattering film thereon.
-
10. A liquid crystal display comprising
a backlight; -
a liquid crystal cell consisting of a pair of substrates being arranged to oppose each other and having an electrode on at least one of them, and a liquid crystal layer sandwiched between said substrates; and
a pair of polarizers placed outside said liquid crystal cell;
wherein an anisotropic spectral scattering film of claim 1 is further included, or at least one of said pair of polarizers is a polarizer of claim 8.
-
-
11. The liquid crystal display of claim 10 wherein the transmittance T(λ
- ) of incident light at wavelength λ
on said liquid crystal cell in at least one direction upward, downward, rightward or leftward at angle θ and
the scattered light intensity F(λ
) of forward scattered light in the same direction as that of said transmittance T (λ
) of incident light at wavelength λ
on said anisotropic spectral scattering film satisfy the following equation (4);
{(T(λ
)/T(545))−
1}×
{(F(λ
)/F(545))−
1}<
0
(4)provided that λ
is 435 or 610 nm and θ
is an arbitrary angle selected from 30-70°
.
- ) of incident light at wavelength λ
-
12. The liquid crystal display of claim 10 wherein said anisotropic spectral scattering film is disposed between said backlight and said liquid crystal layer.
-
13. The liquid crystal display of claim 10 wherein the display mode is TN mode or OCB mode.
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
-
Original AssigneeFuji Photo Film Co Limited (Fujifilm Holdings Corporation)
-
InventorsFujiwara, Isao, Amimori, Ichiro
-
Granted Patent
-
Time in Patent OfficeDays
-
Field of Search
-
US Class Current349/112
-
CPC Class CodesG02B 5/0215 the surface having a regula...G02B 5/0242 by means of dispersed parti...G02B 5/0252 using holographic or diffra...G02B 5/0257 creating an anisotropic dif...G02B 5/0294 adapted to provide an addit...G02B 6/0051 Diffusing sheet or layerG02B 6/105 having optical polarisation...G02F 1/133504 Diffusing, scattering, diff...
