Patent US3781087A successfully refreshed from Google Patents.
US3781087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding construction of plates of liquid crystal display
Assignee: Suwa Seikosha KK
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Filing: 1972-05-08
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Granted: 1973-12-25
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Expires: 1992-05-08
Abstract
Abstract A method of preparing a liquid crystal device is disclosed in which two plates, at least one of which is transparent, are molded in situ within an encasement having a window therethrough through which said liquid crystal device can be viewed. The plates are spaced apart, forming, in combination with an insulating spacer, a chamber containing liquid crystal material. The molding operation seals the chamber against the entry of oxygen and moisture. The resultant device is stable because well sealed.
Inventors
- 👤 J Nagasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
An improved method of fixing together the elements of a display device including two opposing plates, conductive coatings on the interiors of said plates, at least one of said plates and the conductive coating thereon being transparent, a spacer between said plates, said spacer in combination with said plates defining a volume containing a liquid crystal material, and leads electrically connected to each of said conductive coatings, wherein said improvement comprises the step of molding an organic resin encasement around said elements of said display device in situ, said organic resin being selected from the group consisting of thermoplastic and thermosetting resins, the relative dimensions of said encasement and said leads being such that one end of each lead protrudes from said encasement and said encasement having therein a window in registry with said transparent plate.
Claim 2
Dependent Claim
136 words
An improved method of fixing together the elements of a display device including two opposing plates, conductive coatings on the interiors of said plates, at least one of said plates and the conductive coating thereon being transparent, a spacer between said plates, said spacer in combination with said plates defining a volume containing a liquid crystal material, and leads electrically connected to each of said conductive coatings, wherein said improvement comprises the step of molding an organic resin encasement around said elements of said display device in situ, said organic resin being selected from the group consisting of thermoplastic and thermosetting resins, the relative dimensions of said encasement and said leads being such that one end of each lead protrudes from said encasement and said encasement having therein a window in registry with said transparent plate.
Claim 3
Dependent Claim
158 words
An improved structure for fixing together the elements of a display device including two opposing plates, conductive coatings on the interiors of said plates, at least one of said plates and the conductive coating thereon being transparent, a spacer between said plates, said spacer in combination with said plates defining a volume containing a liquid crystal material, and leads electrically connected to each of said conductive coatings, wherein said improvement comprises an organic resin encasement around said elements of said display device, said organic resin being a member of the group consisting of thermoplastic and thermosetting resins and having been molded about said elements of said display device in situ, said organic resin being selected from the group consisting of thermoplastic and thermosetting resins, the relative dimensions of said encasement and said leads being such that one end of each lead protrudes from said encasement and said encasement having therEin a window in registry with said transparent plate.
Claim 4
Dependent Claim
158 words
An improved structure for fixing together the elements of a display device including two opposing plates, conductive coatings on the interiors of said plates, at least one of said plates and the conductive coating thereon being transparent, a spacer between said plates, said spacer in combination with said plates defining a volume containing a liquid crystal material, and leads electrically connected to each of said conductive coatings, wherein said improvement comprises an organic resin encasement around said elements of said display device, said organic resin being a member of the group consisting of thermoplastic and thermosetting resins and having been molded about said elements of said display device in situ, said organic resin being selected from the group consisting of thermoplastic and thermosetting resins, the relative dimensions of said encasement and said leads being such that one end of each lead protrudes from said encasement and said encasement having therEin a window in registry with said transparent plate.
Claim 5
Dependent Claim
36 words
An improved method as defined in claim 1, wherein each of said plates and the conductive coating thereon protrudes outwardly beyond said spacer, thereby rendering each of said conductive coatings readily accessible for attachment of leads.
Claim 6
Dependent Claim
100 words
An improved structure as defined in claim 2, wherein that conductive coating on the interior surface of the plate nearer said window is divided into a narrow section and a wide section having no electrical connection with each other and one of said leads is connected electrically to said narrow section and the other of said leads is connected electrically to said wider section, and said structure further comprises an electrical connection between said narrow section and the opposing conductive coating, thereby providing electrical connection between said one lead and the conductive coating on the plate further from said window.
Claim 7
Dependent Claim
20 words
An improved structure as defined in claim 4, further comprising an insulator between said wide section and said narrow section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |