US4691995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal filling device
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1986-07-15
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Granted: 1987-09-08
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Expires: 2006-07-15
Abstract
Abstract An improved liquid crystal filling device is shown. Prior to joining a substrate with another substrate between which the liquid crystal is to be charged, the liquid crystal is dropped on the substrate and then the other substrate is superimposed on the substrate under pressure. Sandwiched between the substrates, the liquid crystal spreads at high temperature.
Inventors
- 👤 Shunpei Yamazaki
- 👤 Toshimitsu Konuma
- 👤 Toshiji Hamatani
- 👤 Akira Mase
- 👤 Kaoru Koyanagi
- 👤 Shinji Imato
- 👤 Toshiharu Yamaguchi
- 👤 Mitsunori Sakama
- 👤 Takashi Inujima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341; G02F1/13415; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
A liquid crystal filling system comprising: a vacuum chamber; a flexible sheet provided in the chamber and separating the chamber into first and second spaces in an air tight manner; and first and second evacuating devices for said first and second spaces.
Claim 2
Dependent Claim
42 words
A liquid crystal filling system comprising: a vacuum chamber; a flexible sheet provided in the chamber and separating the chamber into first and second spaces in an air tight manner; and first and second evacuating devices for said first and second spaces.
Claim 3
Dependent Claim
14 words
A system of claim 1 further comprising a heater provided in the first space.
Claim 4
Dependent Claim
28 words
A system of claim 2 wherein said chamber comprises a first member forming the first space with the flexible sheet and a second member forming the second chamber.
Claim 5
Dependent Claim
33 words
A system of claim 3 wherein said second member is joined to the first member in an air tight manner and can be removed from the first member together with the flexible sheet.
Claim 6
Dependent Claim
74 words
A liquid crystal filling method comprising: (1) a step of preparing first and second substrates; (2) a step of placing an amount of liquid crystal on the first substrate; (3) a step of laying the second substrate on the first substrate coincident with each other; (4) a step of applying pressure to the second substrate toward the first substrate; and (5) a step of making a sealing structure on the periphery of the substrates.
Claim 7
Dependent Claim
74 words
A liquid crystal filling method comprising: (1) a step of preparing first and second substrates; (2) a step of placing an amount of liquid crystal on the first substrate; (3) a step of laying the second substrate on the first substrate coincident with each other; (4) a step of applying pressure to the second substrate toward the first substrate; and (5) a step of making a sealing structure on the periphery of the substrates.
Claim 8
Dependent Claim
17 words
A method of claim 5 wherein the method is carried out in the device of claim 1.
Claim 9
Dependent Claim
51 words
A method of claim 6 further comprising: (2b) a step of placing the first substrate in the first space; (3a) a step of evacuating the first and second spaces; (3b) a step of increasing the pressure of the second space; (3c) a step of rendering the flexible sheet to extend downward.
Claim 10
Dependent Claim
24 words
A method of claim 7 further comprising: (2a) a step of placing an amount of adhesive on the peripheral portion of the first substrate.
Claim 11
Dependent Claim
11 words
A method of claim 8 wherein said adhesive is epoxy resin.
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) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |