US6181392B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensation for edge effects and cell gap variation in tiled flat-panel, liquid crystal displays
Assignee: TRANSPACIFIC EXCHANGE LLC
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Filing: 2000-05-26
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Granted: 2001-01-30
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Expires: 2020-05-26
Abstract
Abstract The present invention features procedures for correcting discoloration and brightness variations due to liquid crystal cell gap variations or other optical, electro-optical, ambient light, electronic, mechanical, and materials anomalies arising in tiled, flat-panel displays. The purpose of these corrections is to achieve a visually seamless appearance. Absolute, relative and/or smoothing corrections are implemented by performing pixel data video processing with correction data acquired from memory. Techniques for determining and applying these corrections are described.
Inventors
- 👤 Raymond G. Greene
- 👤 J. Peter Krusius
- 👤 Dean W. Skinner
- 👤 Boris Yost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G06; G06F; G06F3/00; G06F3/14; G06F3/147; G09; G09G; G09G3/00; G09G3/20; G02F1/1333; G02F1/13336; G09G2300/00; G09G2300/02; G09G2300/026; G09G2310/00; G09G2310/02; G09G2310/0232; G09G2320/00; G09G2320/02; G09G2320/0233; G09G3/34; G09G3/36; G09G3/3611; G09G5/00; G09G5/36; G09G5/39; G09G5/393; Y; Y10; Y10S; Y10S345/00; Y10S345/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A method for producing a tiled, flat-panel LCD display having substantially uniform luminance and chromaticity and having visually imperceptible seams, the steps comprising: a) arranging a plurality of individual display tiles with seams therebetween, each of said tiles comprising an array of pixels, said pixels comprising sub-pixels for transmitting a predetermined primary color upon application of a sub-pixel stimulation signal; b) adjusting luminance and chromaticity of said sub-pixels located at interior regions of said individual tiles to a first, predetermined level; c) adjusting luminance and chromaticity of said sub-pixels located proximate intersections of said seams; d) adjusting luminance and chromaticity of said sub-pixels located proximate said seams between said individual tiles to a second, predetermined level; and e) blending said first and said second predetermined levels whereby differences in luminance and chromaticity between said interior region and said seams are reduced below a predetermined perceptual threshold.
Claim 2
Independent Claim
146 words
A method for producing a tiled, flat-panel LCD display having substantially uniform luminance and chromaticity and having visually imperceptible seams, the steps comprising: a) arranging a plurality of individual display tiles with seams therebetween, each of said tiles comprising an array of pixels, said pixels comprising sub-pixels for transmitting a predetermined primary color upon application of a sub-pixel stimulation signal; b) adjusting luminance and chromaticity of said sub-pixels located at interior regions of said individual tiles to a first, predetermined level; c) adjusting luminance and chromaticity of said sub-pixels located proximate intersections of said seams; d) adjusting luminance and chromaticity of said sub-pixels located proximate said seams between said individual tiles to a second, predetermined level; and e) blending said first and said second predetermined levels whereby differences in luminance and chromaticity between said interior region and said seams are reduced below a predetermined perceptual threshold.
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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) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |