US6876414B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-transmissible reflector, semi-transmission type polarizer and liquid-crystal display device using the sames
Assignee: Nitto Denko Corp
•
Filing: 2002-02-07
•
Granted: 2005-04-05
•
Expires: 2022-02-07
Abstract
Abstract A semi-transmissible reflection layer is formed on a light-transmissible polymer substrate uniaxially drawn to have uniaxial orientation characteristic to thereby form a semi-transmissible reflector.
Inventors
- 👤 Kazutaka Hara
- 👤 Takafumi Sakuramoto
- 👤 Minoru Miyatake
- 👤 Tatsuya Osuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/133555; G02F1/133528; G02F1/133545; G02F1/1336; G02F1/13362
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A semi-transmission type polarizer comprising: a semi-transmissible reflector comprising a light-transmissible polymer substrate uniaxially drawn to have uniaxial orientation characteristic, and a semi-transmissible reflection layer formed directly on said light-transmissible polymer substrate, and a polarzer stuck onto said semi-transmissible reflector, wherein the anale between a retardation axis of said light-transmissible polymer substrate in said semi-transmissible reflector and an absorption axis of said polarizer is not larger than 9 degrees.
Claim 2
Dependent Claim
69 words
A semi-transmission type polarizer comprising: a semi-transmissible reflector comprising a light-transmissible polymer substrate uniaxially drawn to have uniaxial orientation characteristic, and a semi-transmissible reflection layer formed directly on said light-transmissible polymer substrate, and a polarzer stuck onto said semi-transmissible reflector, wherein the anale between a retardation axis of said light-transmissible polymer substrate in said semi-transmissible reflector and an absorption axis of said polarizer is not larger than 9 degrees.
Claim 3
Dependent Claim
28 words
A semi-transmission type polarizer according to claim 1 , wherein said semi-transmissible reflection layer is made of a metal vapor-deposited film or metal thin film having light transmissibility.
Claim 4
Dependent Claim
44 words
A liquid-crystal display device comprising a liquid-crystal cell, at least one semi-transmission type polarizer defined in claim 1 and disposed on at least one of opposite surfaces of said liquid-crystal cell, and a backlight having polarizing characteristic and combined with said semi-transmission type polarizer.
Claim 5
Dependent Claim
17 words
A liquid-crystal display device according to claim 3 , wherein the backlight comprises a reflection polarizing element.
Claim 6
Dependent Claim
48 words
A semi-transmissible reflector type polarizer according to claim 1 , wherein, when polarized light is incident on at least one surface of said semi-transmissible reflector type polarizer, the light transmitted through said semi-transmissible reflector type polarizer is reduced by at most 10%, as compared to incident polarized light.
Claim 7
Dependent Claim
26 words
A semi-transmissible reflector type polarizer according to claim 5 , wherein the light transmitted through said semi-transmissible reflector type polarizer is reduced by at most 5%.
Claim 8
Dependent Claim
27 words
A semi-transmissible reflector type polarizer according to claim 1 , wherein the light transmitted through said semi-transmissible reflector type polarizer is not reduced by more than 1%.
Claim 9
Dependent Claim
39 words
A semi-transmissible reflector type polarizer according to claim 1 , wherein the angle between a retardation axis of said light-transmissible polymer substrate in said semi-transmissible reflector and an absorption axis of said polarizer is not larger than 6.4 degrees.
Claim 10
Dependent Claim
39 words
A semi-transmissible reflector type polarizer according to claim 1 , wherein the angle between a retardation axis of said light-transmissible polymer substrate in said semi-transmissible reflector and an absorption axis of said polarizer is not larger than 2.8 degrees.
References Cited (Backward Citations)
US4093356A
Cited
US4266859A
Cited
US4228574A
Cited
US4545648A
Cited
US4436377A
Cited
US4533214A
Cited
US4505546A
Cited
US4586790A
Cited
US4707079A
Cited
US6546337B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-04-04 | 2008-10-04 | 2009-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-04-04 | 2012-10-04 | 2013-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-04-04 | 2016-10-04 | 2017-04-05 | $7700.00 | Window Closed / Lapsed |