US5790214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display with portion of common electrode on one side of each substrate and light source on opposite side
Assignee: Samsung SDI Co Ltd
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Filing: 1996-05-29
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Granted: 1998-08-04
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Expires: 2016-05-29
Abstract
Abstract A liquid crystal display has an upper substrate, a lower substrate, and a liquid crystal layer, disposed between the upper and lower substrates. First segment electrodes are formed in one portion of the upper substrate, and a first common electrode is formed in the other portion thereof. A second common electrode is formed on the portion of the lower substrate corresponding to that of the first segment electrodes, and second segment electrodes are formed on the portion of the lower substrate corresponding to that of the first common electrode. The dual-faced liquid crystal display enables observation of identical data on the front and rear surfaces thereof, with a single liquid crystal cell.
Inventors
- 👤 Hyeon-chang Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134327; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02F1/133342
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A liquid crystal display comprising: an upper substrate having upper and lower surfaces; a lower substrate having upper and lower surfaces, the lower substrate being disposed such that the upper surface of the lower substrate faces the lower surface of the upper substrate; a liquid crystal layer disposed between said upper and lower substrates; and common and segment electrodes formed on the lower surface of the upper substrate and the upper surface of the lower substrate, wherein first segment electrodes are formed on a first portion of the lower surface of said upper substrate, and a first common electrode is formed on a second portion of the lower surface of said upper substrate, and wherein a second common electrode is formed on a first portion of the upper surface of said lower substrate corresponding to said first portion of said upper substrate having said first segment electrodes, and second segment electrodes are formed on a second portion of the upper surface of said lower substrate corresponding to the second portion of said upper substrate having said first common electrode.
Claim 2
Dependent Claim
179 words
A liquid crystal display comprising: an upper substrate having upper and lower surfaces; a lower substrate having upper and lower surfaces, the lower substrate being disposed such that the upper surface of the lower substrate faces the lower surface of the upper substrate; a liquid crystal layer disposed between said upper and lower substrates; and common and segment electrodes formed on the lower surface of the upper substrate and the upper surface of the lower substrate, wherein first segment electrodes are formed on a first portion of the lower surface of said upper substrate, and a first common electrode is formed on a second portion of the lower surface of said upper substrate, and wherein a second common electrode is formed on a first portion of the upper surface of said lower substrate corresponding to said first portion of said upper substrate having said first segment electrodes, and second segment electrodes are formed on a second portion of the upper surface of said lower substrate corresponding to the second portion of said upper substrate having said first common electrode.
Claim 3
Dependent Claim
53 words
The liquid crystal display as claimed in claim 1, further comprising backlight means, wherein said backlight means is installed at a portion of the lower surface of said lower substrate opposite said second common electrode and installed at a portion of the upper surface of said upper substrate opposite said first common electrode.
Claim 4
Dependent Claim
19 words
The liquid crystal display as claimed in claim 2, wherein said backlight means comprises a cold cathode fluorescent tube.
Claim 5
Dependent Claim
18 words
The liquid crystal display as claimed in claim 2, wherein said backlight means comprises a light emitting diode.
Claim 6
Dependent Claim
17 words
The liquid crystal display as claimed in claim 2, wherein said backlight means comprises an electroluminescent diode.
References Cited (Backward Citations)
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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) | 2001-08-03 | 2002-02-02 | 2002-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-03 | 2006-02-02 | 2006-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-03 | 2010-02-02 | 2010-08-04 | $7700.00 | Window Closed / Lapsed |