Patent US5040874A successfully refreshed from Google Patents.
US5040874A
Expired / Lapsed
US
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Liquid crystal display device having interlaced driving circuits for black line interleave of a video signal
Assignee: Sharp Corp
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Filing: 1989-12-05
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Granted: 1991-08-20
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Expires: 2009-12-05
Abstract
Abstract A liquid crystal display panel comprising pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal. During the odd-numbered field, a video signal for the odd-numbered field is supplied to the pixels in the odd-numbered lines and a black-level signal is supplied to the pixels in the even-numbered lines, whereby the image of the odd-numbered field can be displayed by the pixels in the odd-numbered lines while a black image can be displayed by the pixels in the even-numbered lines. During the even-numbered field, a video signal for the even-numbered field is supplied to the pixels in the even-numbered lines and a black-level signal is supplied to the pixels in the odd-numbered lines, whereby the image of the even-numbered field can be displayed by the pixels in the even-numbered lines while a black image can be displayed by the pixels in the odd-numbered lines.
Inventors
- 👤 Hidenori Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:02
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3685; G09G3/3688; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G09G2310/00; G09G2310/02; G09G2310/0224; G09G3/2007; G09G3/2011; G09G3/3614
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A liquid crystal display panel which comprises: a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal; and signal driver means for supplying, during an odd-numbered field, a video signal for the odd-numbered field to the pixels in the odd-numbered lines and a black-level signal to the pixels in the even-numbered lines and for supplying, during an even-numbered field, a video signal for the even-numbered field to the pixels in the even-numbered lines and a black-level signal to the pixels in the odd-numbered lines.
Claim 2
Dependent Claim
96 words
A liquid crystal display panel which comprises: a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal; and signal driver means for supplying, during an odd-numbered field, a video signal for the odd-numbered field to the pixels in the odd-numbered lines and a black-level signal to the pixels in the even-numbered lines and for supplying, during an even-numbered field, a video signal for the even-numbered field to the pixels in the even-numbered lines and a black-level signal to the pixels in the odd-numbered lines.
Claim 3
Dependent Claim
33 words
The device as claimed in claim 1, wherein a plurality of signal drivers provide the signal driver means for supplying the video signal and the black-level signal to the odd- and even-numbered lines.
Claim 4
Dependent Claim
32 words
The device as claimed in claim 1, wherein a single signal driver provides the signal driver means for supplying the video signal and the black-level signal to the odd- and even-numbered lines.
Claim 5
Dependent Claim
80 words
A liquid crystal display panel which comprises: a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal; and signal driver means for supplying a signal to the pixels in the odd-numbered lines while supplying a black-level signal to the pixels in the even-numbered lines and for supplying a signal to the pixels in the even-numbered lines while supplying a black-level signal to the pixels in the odd-numbered lines.
Claim 6
Dependent Claim
80 words
A liquid crystal display panel which comprises: a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal; and signal driver means for supplying a signal to the pixels in the odd-numbered lines while supplying a black-level signal to the pixels in the even-numbered lines and for supplying a signal to the pixels in the even-numbered lines while supplying a black-level signal to the pixels in the odd-numbered lines.
Claim 7
Dependent Claim
32 words
The device as claimed in claim 4, wherein a plurality of signal drivers provide the signal driver means for supplying the signal and the black-level signal to the odd- and even-numbered lines.
Claim 8
Dependent Claim
31 words
The device as claimed in claim 4, wherein a single signal driver provides the signal driver means for supplying the signal and the black-level signal to the odd- and even-numbered lines.
Claim 9
Independent Claim
101 words
The method of displaying a video signal on a liquid crystal display panel having a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal, comprising the steps of: supplying, during an odd-numbered field, a video signal for the odd-numbered field to the pixels in the odd-numbered lines and a black-level signal to the pixels in the even-numbered lines; and supplying, during an even-numbered field, a video signal for the even-numbered field to the pixels in the even-numbered lines and a black-level signal to the pixels in the odd-numbered lines.
Claim 10
Independent Claim
101 words
The method of displaying a video signal on a liquid crystal display panel having a plurality of pixels in odd-numbered lines and even-numbered lines corresponding respectively to odd-numbered lines and even-numbered lines of a video signal, comprising the steps of: supplying, during an odd-numbered field, a video signal for the odd-numbered field to the pixels in the odd-numbered lines and a black-level signal to the pixels in the even-numbered lines; and supplying, during an even-numbered field, a video signal for the even-numbered field to the pixels in the even-numbered lines and a black-level signal to the pixels in the odd-numbered lines.
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |