US4379619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-chromic displays
Assignee: Sharp Corp
•
Filing: 1980-12-19
•
Granted: 1983-04-12
•
Expires: 2000-12-19
Abstract
Abstract An electro-chromic display in which the outer frame of the display cell confining an electrolyte is defined by a pair of oppositely disposed substrates, the peripheral edges of the substrates being joined sealingly to each other with an addition reaction type silicone resin adhesive containing fine powder of an inorganic substance such as aluminum, alumina, titanium oxide, silicon oxide or boron nitride which prevents decrease of said electrolyte.
Inventors
- 👤 Hiroshi Kuwagaki
- 👤 Kohzo Yano
- 👤 Sadatoshi Takechi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
In an electro-chromic display wherein the outer frame of the display, comprising a pair of oppositely disposed substrates, confines an electrolyte, the improvement comprising joining the peripheral edges of said oppositely disposed substrates with an addition reaction type silicone resin adhesive containing an inorganic substance in the form of a fine powder, said inorganic substance preventing the electrolyte from leaking out of the display in gaseous form through the adhesive.
Claim 2
Dependent Claim
70 words
In an electro-chromic display wherein the outer frame of the display, comprising a pair of oppositely disposed substrates, confines an electrolyte, the improvement comprising joining the peripheral edges of said oppositely disposed substrates with an addition reaction type silicone resin adhesive containing an inorganic substance in the form of a fine powder, said inorganic substance preventing the electrolyte from leaking out of the display in gaseous form through the adhesive.
Claim 3
Dependent Claim
22 words
An electro-chromic display as claimed in claim 1 wherein the inorganic substance is aluminum, alumina, titanium oxide, silicon oxide or boron nitride.
Claim 4
Dependent Claim
34 words
An electro-chromic display as claimed in any of claim 1 or 2 wherein an inorganic substance is added in an amount between 2 and 100 PHR to the addition reaction type silicone resin adhesive.
References Cited (Backward Citations)
US4078855A
Cited
US4264150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |