US3989353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid planar liquid crystal display with matching leads
Assignee: Intel Corp
•
Filing: 1975-03-20
•
Granted: 1976-11-02
•
Expires: 1995-03-20
Abstract
Abstract The present invention is a liquid crystal display which has liquid crystal disposed between a first and second substrate. The first substrate has transparent conductive indicia members with blending conductive leads forming conductive paths to the transparent conductive indicia members. The second substrate has a solid conductive reflective portion or surface. Application of a potential difference between the indicia members and reflective surface causes predetermined indicia and leads to become energized, and the liquid crystal near the transparent indicia and conductive leads is activated, however the leads do not appear activated since the blending lead obscure the activated liquid crystal.
Inventors
- 👤 James M. Phalan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
247 words
A liquid crystal display comprising: a first substrate having a plurality of indicia members communicating with an electrical source, said indicia members being selectively energized by said electrical source; a second substrate substantially parallel to said first substrate and having at least a portion of one surface being conductive said portion of said one surface being configured on said second substrate such that said portion entirely circumscribes each perpendicular geometric projection of said indicia members onto said second substrate regardless of the precision of alignment of said indicia members with respect to said second substrate; a spacing means for spacing said first substrate from said second substrate, said spacing means and said first and second substrates defining a cavity; a liquid crystalline substance filling said cavity; and a plurality of conductive leads disposed on said first substrate and selectively coupling said indicia members to an electrical source, said plurality of conductive leads having a perpendicular, geometric projection onto said conductive portion of said second substrate, shielding said liquid crystalline substance between said leads and said projection of said leads onto said conductive portion from view and having substantially similar optical properties as said portion of said one surface of said second substrate, whereby said indicia members and plurality of leads may be energized by an electrical source without said leads being readily visible and without the need for the alignment of said indicia members and plurality of leads with respect to said second substrate to be precise.
Claim 2
Dependent Claim
247 words
A liquid crystal display comprising: a first substrate having a plurality of indicia members communicating with an electrical source, said indicia members being selectively energized by said electrical source; a second substrate substantially parallel to said first substrate and having at least a portion of one surface being conductive said portion of said one surface being configured on said second substrate such that said portion entirely circumscribes each perpendicular geometric projection of said indicia members onto said second substrate regardless of the precision of alignment of said indicia members with respect to said second substrate; a spacing means for spacing said first substrate from said second substrate, said spacing means and said first and second substrates defining a cavity; a liquid crystalline substance filling said cavity; and a plurality of conductive leads disposed on said first substrate and selectively coupling said indicia members to an electrical source, said plurality of conductive leads having a perpendicular, geometric projection onto said conductive portion of said second substrate, shielding said liquid crystalline substance between said leads and said projection of said leads onto said conductive portion from view and having substantially similar optical properties as said portion of said one surface of said second substrate, whereby said indicia members and plurality of leads may be energized by an electrical source without said leads being readily visible and without the need for the alignment of said indicia members and plurality of leads with respect to said second substrate to be precise.
Claim 3
Dependent Claim
10 words
The display of claim 1 wherein said leads are opaque.
Claim 4
Dependent Claim
17 words
The display of claim 1 wherein said indicia members are indium oxide and said leads are gold.
Claim 5
Dependent Claim
31 words
The display of claim 1 wherein said portion of said one surface on said second substrate and said leads on said first substrate have substantially the same color and reflective properties.
Claim 6
Dependent Claim
18 words
The display of claim 1 wherein substantially all of said one surface of said second substrate is conductive.
Claim 7
Dependent Claim
152 words
In an liquid crystal display in combination with a first substrate having one surface with a plurality of conductive indicia members to be displayed, said first substrate disposed adjacent to and approximately parallel to a second substrate, a liquid crystalline substance being disposed between said first and second substrates, the improvement comprising: a portion of said second substrate having a conductive surface, said portion selectively configured to entirely circumscribe each perpendicular geometric projection of each of said indicia members onto said second substrate regardless of precision of alignment of said indicia members with respect to said second substrate; and a plurality of conductive leads selectively coupled to each of said indicia members, each of said conductive leads having substantially the same optical properties as said portion of said one surface of said second substrate, said conductive leads also substantially shielding said liquid crystalline substance between said leads and second substrate from view.
Claim 8
Dependent Claim
152 words
In an liquid crystal display in combination with a first substrate having one surface with a plurality of conductive indicia members to be displayed, said first substrate disposed adjacent to and approximately parallel to a second substrate, a liquid crystalline substance being disposed between said first and second substrates, the improvement comprising: a portion of said second substrate having a conductive surface, said portion selectively configured to entirely circumscribe each perpendicular geometric projection of each of said indicia members onto said second substrate regardless of precision of alignment of said indicia members with respect to said second substrate; and a plurality of conductive leads selectively coupled to each of said indicia members, each of said conductive leads having substantially the same optical properties as said portion of said one surface of said second substrate, said conductive leads also substantially shielding said liquid crystalline substance between said leads and second substrate from view.
Claim 9
Dependent Claim
14 words
The display of claim 6 wherein each of said leads are opaque, and reflective.
Claim 10
Dependent Claim
23 words
The display of claim 6 wherein: said conductive portion of said second substrate includes substantially all of one surface of said second substrate.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |