US5556670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display panel
Assignee: Casio Computer Co Ltd
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Filing: 1995-05-03
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Granted: 1996-09-17
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Expires: 2015-05-03
Abstract
Abstract A flexible liquid crystal display panel includes spacers and cross members which are prevented from moving and from exfoliating, respectively, even when a force is applied thereto. In this panel, upper and lower substrates have flexibility, and spacers coated with an adhesive are fixed to orientation films formed on the substrates, by means of the adhesive. Thus, even when a force is applied from the outside, the spacers are prevented from moving, and therefore the distance between the substrates can be kept constant and the display characteristics of the liquid crystal can be made uniform. Further, a sealing member interposed between the substrates has holes through which cross members are fitted. This means that the cross members are reinforced by the sealing member, and hence they can be prevented from exfoliating from the substrates, keeping good electrical connection.
Inventors
- 👤 Ichiro Mihara
- 👤 Minoru Kumagai
- 👤 Kunpei Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/13392; C; C09; C09K; C09K2323/00; C09K2323/05; G02F1/133305; G02F1/133351
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
263 words
A liquid crystal display panel comprising: first and second flexible substrates, said substrates facing each other; first and second conductive layers, said conductive layers respectively being disposed on respective innerfaces of said respective substrates; first and second orientation layers, said orientation layers respectively being disposed on said first and second conductive layers; a sealing member interposed between said first and second substrates for sealing perimeters of said first and second substrates together to define a cavity between said first and second substrates, said sealing member having a hole formed in said sealing member and said sealing member being formed of a material whose curing reaction proceeds at a room temperature; a plurality of spacers interposed in the cavity defined between said first and second substrates, each of said spacers being brought into contact with said first and second orientation layers and being fixed to said first and second orientation layers by an adhesive agent which is made of a material selected from the group consisting of a thermoplastic resin and a thermosetting resin and which is respectively formed over a surface of each said spacer; a connecting member connecting said first and second conductive layers, said connecting member being formed in the hole of said sealing member and said connecting member being made of a thermosetting resin in which conductive particles are dispersed, and wherein said thermosetting resin of said connecting member is a material whose curing reaction proceeds at a higher temperature than said room temperature; and a liquid crystal material filled in the cavity defined between said first and second substrates.
Claim 2
Dependent Claim
263 words
A liquid crystal display panel comprising: first and second flexible substrates, said substrates facing each other; first and second conductive layers, said conductive layers respectively being disposed on respective innerfaces of said respective substrates; first and second orientation layers, said orientation layers respectively being disposed on said first and second conductive layers; a sealing member interposed between said first and second substrates for sealing perimeters of said first and second substrates together to define a cavity between said first and second substrates, said sealing member having a hole formed in said sealing member and said sealing member being formed of a material whose curing reaction proceeds at a room temperature; a plurality of spacers interposed in the cavity defined between said first and second substrates, each of said spacers being brought into contact with said first and second orientation layers and being fixed to said first and second orientation layers by an adhesive agent which is made of a material selected from the group consisting of a thermoplastic resin and a thermosetting resin and which is respectively formed over a surface of each said spacer; a connecting member connecting said first and second conductive layers, said connecting member being formed in the hole of said sealing member and said connecting member being made of a thermosetting resin in which conductive particles are dispersed, and wherein said thermosetting resin of said connecting member is a material whose curing reaction proceeds at a higher temperature than said room temperature; and a liquid crystal material filled in the cavity defined between said first and second substrates.
Claim 3
Dependent Claim
24 words
A liquid crystal display panel according to claim 1, wherein said spacers are arranged in said cavity at a rate of 100-500/mm 2 .
Claim 4
Dependent Claim
24 words
A liquid crystal display panel according to claim 1, wherein said spacers are arranged in said cavity at a rate of 1000-2000/mm 2 .
Claim 5
Dependent Claim
29 words
A liquid crystal display panel according to claim 1, wherein at least one of said first and second substrates is made of any one of polyethyleneterephthalate, polyethersulfone and polyimide.
Claim 6
Dependent Claim
30 words
A liquid crystal display panel according to claim 1, wherein said curing reaction of said thermosetting resin of said connecting member proceeds in a temperature range of from 120°-150° C.
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) | 1999-09-17 | 2000-03-18 | 2000-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-17 | 2004-03-18 | 2004-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-17 | 2008-03-18 | 2008-09-17 | $7700.00 | Window Closed / Lapsed |