Patent US4474839A successfully refreshed from Google Patents.
US4474839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large-area liquid crystal display panel and method for making it
Assignee: Sharp Corp
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Filing: 1982-12-14
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Granted: 1984-10-02
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Expires: 2002-12-14
Abstract
Abstract Two or more liquid crystal units are disclosed herein to provide a greater area liquid crystal display panel. Each of the liquid crystal display units has a front support and a back support both of which are adhesively attached to each other via a proper seal resin applied on the supports along all but one side or along all but two opposite sides thereof. In an edge portion including the sides where no seal resin is applied, there is formed an opening for injection of liquid crystal material into a cavity defined between the two supports. After injection of the liquid crystal material the opening is pre-sealed with the adhesive material which may be solidified through thermal treatment or light treatment. The edge portions of the two liquid crystal display panels are situated in contact relationship with each other and bonded together by the use of the adhesive material which may be solidified through thermal treatment or light treatment.
Inventors
- 👤 Toshiaki Takamatsu
- 👤 Fumiaki Funada
- 👤 Shuuhei Yasuda
- 👤 Masataka Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341; G02F1/1339; C; C09; C09K; C09K2323/00; C09K2323/05; C09K2323/051; C09K2323/055; G02F1/13336; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
75 words
A liquid crystal display device comprising: two liquid crystal units, each of the liquid crystal units having a front support and a back support; a resin bead disposed between said front and back supports for adhesively attaching said supports to each other along each edge except one bead-free edge; liquid crystal material disposed between said front and back supports; and said liquid crystal units being adhesively joined to each other along the bead-free edges thereof.
Claim 2
Dependent Claim
75 words
A liquid crystal display device comprising: two liquid crystal units, each of the liquid crystal units having a front support and a back support; a resin bead disposed between said front and back supports for adhesively attaching said supports to each other along each edge except one bead-free edge; liquid crystal material disposed between said front and back supports; and said liquid crystal units being adhesively joined to each other along the bead-free edges thereof.
Claim 3
Dependent Claim
29 words
A liquid crystal display device as in claim 1, wherein said joined bead-free edges are joined by means of an adhesive material comprised of a low melting point solder.
Claim 4
Dependent Claim
27 words
A liquid crystal display device as in claim 1, wherein said joined bead-free edges are joined by means of an adhesive material comprised of an epoxy resin.
Claim 5
Dependent Claim
131 words
A liquid crystal display device comprising: two liquid crystal end units and at least one liquid crystal intermediate unit disposed between said end units; each of said end units having a front support and a back support, a resin bead disposed between said front and back supports along each edge except one bead-free edge, and liquid crystal material disposed between said front and back supports; each of said intermediate units having a front support and a back support, a resin bead disposed between said front and back supports along each edge except two opposite bead-free edges, and liquid crystal material disposed between said front and back support; and said liquid crystal units being adhesively joined to each other in series with adjacent units being adhesively joined along their respective bead-free edges.
Claim 6
Dependent Claim
131 words
A liquid crystal display device comprising: two liquid crystal end units and at least one liquid crystal intermediate unit disposed between said end units; each of said end units having a front support and a back support, a resin bead disposed between said front and back supports along each edge except one bead-free edge, and liquid crystal material disposed between said front and back supports; each of said intermediate units having a front support and a back support, a resin bead disposed between said front and back supports along each edge except two opposite bead-free edges, and liquid crystal material disposed between said front and back support; and said liquid crystal units being adhesively joined to each other in series with adjacent units being adhesively joined along their respective bead-free edges.
Claim 7
Dependent Claim
28 words
A liquid crystal display device as in claim 4, wherein said joined bead-free edges are joined by means of an adhesive material comprised of a low-melting point solder.
Claim 8
Dependent Claim
27 words
A liquid crystal display device as in claim 4, wherein said joined bead-free edges are joined by means of an adhesive material comprised of an epoxy resin.
References Cited (Backward Citations)
US4007077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |