Patent US5926239A successfully refreshed from Google Patents.
US5926239A
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Backlights for color liquid crystal displays
Assignee: Applied Nanotech Holdings Inc
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Filing: 1996-11-22
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Granted: 1999-07-20
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Expires: 2016-11-22
Abstract
Abstract A backlight for a color liquid crystal display uses various techniques for activating colored phosphors, which emit colored light to each one of several sub-pixels within a particular liquid crystal display pixel. Activation of the colored phosphors may be performed using field emission devices, both diode and triode, a fluorescent lamp, thin film electroluminescent light, an ultraviolet lamp, a thermionic emitter, or a high-intensity glow discharge lamp. LCD panels are manufactured using less than four glass substrates.
Inventors
- 👤 Nalin Kumar
- 👤 Zvi Yaniv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133617; H; H01; H01J; H01J63/00; H01J63/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
64 words
An LCD display comprising: a first transparent substrate; a second transparent substrate; a liquid crystal cell disposed between the first and second transparent substrates; a first transparent conductor layer disposed on the second transparent substrate; colored phosphor pixels disposed on the first transparent conductor layer; an insulator layer disposed over the colored phosphor pixels; and a second conductor layer disposed on the insulator layer.
Claim 2
Dependent Claim
64 words
An LCD display comprising: a first transparent substrate; a second transparent substrate; a liquid crystal cell disposed between the first and second transparent substrates; a first transparent conductor layer disposed on the second transparent substrate; colored phosphor pixels disposed on the first transparent conductor layer; an insulator layer disposed over the colored phosphor pixels; and a second conductor layer disposed on the insulator layer.
Claim 3
Dependent Claim
28 words
The LCD display as recited in claim 1, further comprising: a polarizer layer disposed on the first transparent substrate; and a diffuser layer disposed on the polarizer layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-07-19 | 2003-01-18 | 2003-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-19 | 2007-01-18 | 2007-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-19 | 2011-01-18 | 2011-07-20 | $7700.00 | Window Closed / Lapsed |