Patent US4469410A successfully refreshed from Google Patents.
US4469410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Common transfer contact for liquid crystal display cell or electrochromic display cell
Assignee: Sharp Corp
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Filing: 1978-06-28
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Granted: 1984-09-04
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Expires: 1998-06-28
Abstract
Abstract A common transfer contact is provided with such an electro-optical display cell as a liquid crystal display cell or an electrochromic display cell for electrically connecting an electrode disposed on a substrate to a terminal arranged on another substrate. The common transfer contact is encircled by a seal material. The seal material is so arranged on the substrate as to occupy a larger area at the portion where the common transfer contact is provided than the remaining portion. Further the seal material can have a desired number of notches where the seal material is removed to ensure ready placement of the common transfer contact. At least, the common transfer contact is pre-heated before forced toward the seal material so that organic solvent contained with the material of the common transfer contact be in part eliminated. The pre-heating process is carried out at a temperature of 60°-70° C. for a period of 10-20 minutes.
Inventors
- 👤 Isao Ikesue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/15; G02F1/153; G02F1/161
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
59 words
An electro-optical display cell comprising: a first conductive substrate having a relatively soft dielectric seal disposed thereon; and a second conductive substrate having a relatively hard conductive contact projection disposed thereon; said first and second conductive substrates being compressed together such that said relatively hard contact projection in mutual conductive contact with said substrates to conductively interconnect the latter.
Claim 2
Dependent Claim
59 words
An electro-optical display cell comprising: a first conductive substrate having a relatively soft dielectric seal disposed thereon; and a second conductive substrate having a relatively hard conductive contact projection disposed thereon; said first and second conductive substrates being compressed together such that said relatively hard contact projection in mutual conductive contact with said substrates to conductively interconnect the latter.
Claim 3
Dependent Claim
23 words
The display cell of claim 1, wherein said relatively soft dielectric seal is formed of a mixture of epoxy resin and glass powder.
Claim 4
Dependent Claim
18 words
The display cell of claim 1, wherein said hard conductive contact projection is formed of a silver paste.
Claim 5
Dependent Claim
25 words
The display cell of claim 1, wherein said relatively soft dielectric seal has a cut out portion for receiving said relatively hard conductive contact projection.
Claim 6
Dependent Claim
56 words
An electro-optical display cell comprising: a first conductive substrate having a relatively soft dielectric seal disposed thereon; and a conductive substrate having a relatively hard conductive contact projection disposed thereon; said contact projection being merged with said dielectric seal to place said contact projection into mutually conductive contact with said substrates to conductively interconnect the latter.
Claim 7
Dependent Claim
56 words
An electro-optical display cell comprising: a first conductive substrate having a relatively soft dielectric seal disposed thereon; and a conductive substrate having a relatively hard conductive contact projection disposed thereon; said contact projection being merged with said dielectric seal to place said contact projection into mutually conductive contact with said substrates to conductively interconnect the latter.
Claim 8
Dependent Claim
65 words
An electro-optical display cell comprising: a first conductive substrate having a dielectric seal disposed thereon; and a second conductive substrate having a conductive contact projection disposed thereon; said first and second conductive substrates being compressed together such that said contact projection penetrates through said dielectric seal to contact said first conductive substrate and conductively interconnect said conductive substrates without dispersion of the conductive contact projection.
Claim 9
Dependent Claim
65 words
An electro-optical display cell comprising: a first conductive substrate having a dielectric seal disposed thereon; and a second conductive substrate having a conductive contact projection disposed thereon; said first and second conductive substrates being compressed together such that said contact projection penetrates through said dielectric seal to contact said first conductive substrate and conductively interconnect said conductive substrates without dispersion of the conductive contact projection.
Claim 10
Dependent Claim
21 words
The display cell of any of claims 1, 5 or 6, wherein said dielectric seal totally surrounds said conductive contact projection.
Claim 11
Dependent Claim
54 words
An electro-optical display cell comprising: first and second conductive substrates; a dielectric seal formed between said first and second conductive substrates; and a conductive transfer contact disposed in mutual conductive contact with said substrates to conductively interconnect the latter, said conductive transfer contact being fully encased by said conductive substrates and said dielectric seal.
Claim 12
Dependent Claim
54 words
An electro-optical display cell comprising: first and second conductive substrates; a dielectric seal formed between said first and second conductive substrates; and a conductive transfer contact disposed in mutual conductive contact with said substrates to conductively interconnect the latter, said conductive transfer contact being fully encased by said conductive substrates and said dielectric seal.
Claim 13
Dependent Claim
32 words
The display cell of claims 6 or 8, wherein said dielectric seal is formed of an epoxy resin and glass particles; and wherein said transfer contact is formed of a silver paste.
Claim 14
Independent Claim
81 words
A method of manufacturing an electro-optical display cell having a contact formed between first and second conductive substrates comprising the steps of: forming a relatively soft dielectric seal on the first conductive substrate; forming a relatively hard conductive contact on the second conductive substrate; pressing said first and second conductive substrates together to merge said relatively hard conductive contact with said dielectric seal and to place said conductive contact in mutual conductive contact with said substrates to conductively interconnect the latter.
Claim 15
Independent Claim
81 words
A method of manufacturing an electro-optical display cell having a contact formed between first and second conductive substrates comprising the steps of: forming a relatively soft dielectric seal on the first conductive substrate; forming a relatively hard conductive contact on the second conductive substrate; pressing said first and second conductive substrates together to merge said relatively hard conductive contact with said dielectric seal and to place said conductive contact in mutual conductive contact with said substrates to conductively interconnect the latter.
Claim 16
Dependent Claim
22 words
The method of claim 10, wherein said relatively hard conductive contact is formed of silver paste containing an amount of organic solution.
Claim 17
Dependent Claim
30 words
The method of claim 11, wherein said step of forming said relatively hard conductive contact includes the step of heating said hard conductive contact to partially remove said organic solution.
Claim 18
Dependent Claim
26 words
The method of claim 12, wherein said step of heating is performed at a temperature of 60°-70° C. for a period of 10 to 20 minutes.
Claim 19
Dependent Claim
20 words
The method of claim 12, wherein said relatively soft dielectric seal is a mixture of epoxy resin and glass powder.
Claim 20
Dependent Claim
25 words
The method of claim 14, wherein said step of forming said relatively soft dielectric seal includes the step of heating said relatively soft dielectric seal.
Claim 21
Dependent Claim
23 words
The method of claim 10, further comprising the step of hardening said relatively soft dielectric seal by gradually heating said electro-optical display cell.
Claim 22
Dependent Claim
27 words
The method of claim 16, wherein the step of hardening is performed by gradually subjecting said display cell to successively higher temperatures over a period of time.
Claim 23
Dependent Claim
19 words
The method of claim 10, wherein the step of pressing causes said seal to totally surround said conductive contact.
Claim 24
Dependent Claim
19 words
The display cell produced by the method of claims 10, 11, 12, 13, 14, 15, 16, 17, or 18.
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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |