US4624529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display with central interconnections
Assignee: Timex Group USA Inc
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Filing: 1984-11-16
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Granted: 1986-11-25
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Expires: 2004-11-16
Abstract
Abstract A liquid crystal display adapted for a solid state analog timepiece has front and rear transparent substrates with radial transparent electrodes to represent hour, minute and second hands. The contact terminals connected to the electrodes are grouped in an array at the center of the front substrate. An elastomeric connector containing multiple discrete conductors extends through a center hole in the rear substrate to connect the array of contact terminals on the front substrate with a similar array of contact terminals on a printed circuit board behind the display. Liquid crystal material is sealed between the substrates both at the periphery of the display and around the central hole.
Inventors
- 👤 Leonard M. Dorfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:16
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/1343; G02F1/134309; G04; G04G; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0035; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/325
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
Improvement in a liquid crystal display for a solid state analog timepiece, said display having upper and lower spaced substrates with liquid crystal material sealed therebetween and having a plurality of opposed transparent electrodes on the substrates, the improvement comprising a plurality of radial electrodes on the upper substrate, a plurality of contact terminals arranged in a first array on the central portion of said upper substrate and each connected to one of said radial electrodes, said other substrate defining a central hole therethrough providing access to said first array, and elastomeric connector means disposed in said hole and having a plurality of imbedded discrete conductors making contact with said contact terminals.
Claim 2
Dependent Claim
112 words
Improvement in a liquid crystal display for a solid state analog timepiece, said display having upper and lower spaced substrates with liquid crystal material sealed therebetween and having a plurality of opposed transparent electrodes on the substrates, the improvement comprising a plurality of radial electrodes on the upper substrate, a plurality of contact terminals arranged in a first array on the central portion of said upper substrate and each connected to one of said radial electrodes, said other substrate defining a central hole therethrough providing access to said first array, and elastomeric connector means disposed in said hole and having a plurality of imbedded discrete conductors making contact with said contact terminals.
Claim 3
Dependent Claim
39 words
The improved display in accordance with claim 1, wherein said upper substrate includes crossover connections connected to contact terminals disposed in said array and wherein said electrodes on the lower substrate are connected between substrates to said crossover connections.
Claim 4
Dependent Claim
37 words
The improved display in accordance with claim 1, wherein the display includes a lower polarizer and reflector having central holes therethrough aligned with the lower substrate central hole, and wherein said connector extends through said central holes.
Claim 5
Dependent Claim
45 words
The improved display according to claim 1 and further including means providing a second array of contact terminals aligned with said first array, said discrete conductors in the connector being arranged to connect the contact terminals in respective pairs from the first and second arrays.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |