Patent US4308658A successfully refreshed from Google Patents.
US4308658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic display device manufacture method
Assignee: Sharp Corp
•
Filing: 1980-01-28
•
Granted: 1982-01-05
•
Expires: 2000-01-28
Abstract
Abstract In an electrochromic display device including an electro-chromic layer comprising a film made of amorphous tungsten oxide (WO 3 ), the device is fabricated under the ambience of both a relative humidity below 60% and an absolute humidity below 1.17×10 -2 Kg/Kg to assure electro-optical properties of the electrochromic display device.
Inventors
- 👤 Kohzo Yano
- 👤 Sadatoshi Takechi
- 👤 Yasuhiko Inami
- 👤 Hisashi Uede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:01
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/161
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
A method for fabricating an electrochromic display device including two parallel substrates defining a cavity therebetween, electrodes formed on the respective substrates, layers of electrochromic material disposed between the substrates, and an electrolyte disposed in the cavity defined by the substrates, said method comprising the steps of: controlling the humidity of an environment to hold it below a relative humidity of 60% and, simultaneously, an absolute humidity of 1.17×10 -2 kg/kg at those times when the humidity of the ambient environment would otherwise exceed said relative humidity of 60% or absolute humidity of 1.17×10 -2 kg/kg; and depositing the layers of the electrochromic material onto the surface of the electrodes in a vacuum chamber positioned in said controlled environment and fabricating the electrochromic display device in said environment from said substrates, electrodes, electrochromic layers and electrolyte.
Claim 2
Independent Claim
136 words
A method for fabricating an electrochromic display device including two parallel substrates defining a cavity therebetween, electrodes formed on the respective substrates, layers of electrochromic material disposed between the substrates, and an electrolyte disposed in the cavity defined by the substrates, said method comprising the steps of: controlling the humidity of an environment to hold it below a relative humidity of 60% and, simultaneously, an absolute humidity of 1.17×10 -2 kg/kg at those times when the humidity of the ambient environment would otherwise exceed said relative humidity of 60% or absolute humidity of 1.17×10 -2 kg/kg; and depositing the layers of the electrochromic material onto the surface of the electrodes in a vacuum chamber positioned in said controlled environment and fabricating the electrochromic display device in said environment from said substrates, electrodes, electrochromic layers and electrolyte.
Claim 3
Dependent Claim
19 words
The method according to claim 1, wherein said layers of electrochromic material comprise amorphous tungsten oxide (WO 3 ).
References Cited (Backward Citations)
US3843232A
Cited
US3970365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |