Patent US4832457A successfully refreshed from Google Patents.
US4832457A
Expired / Lapsed
US
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Multipanel liquid crystal display device
Assignee: Hitachi Ltd
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Filing: 1988-02-16
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Granted: 1989-05-23
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Expires: 2008-02-16
Abstract
Abstract A multipanel liquid crystal display device and a method of manufacturing such a device is disclosed. The liquid crystal display device comprises two or four panels of square shape each including a first plate of square shape. These two or four first plates are disposed in such a positional relation that at least two orthogonally crossing sides of each of the plates are not adjoined by any one of the remaining plates thereby forming a planar assembly lying in the plane. One of the major surfaces of each of the first plates provides a display region except marginal edges adjacent to the at least two orthogonally crossing sides not adjoined by any one of the remaining plates, and picture element electrodes arranged in a matrix pattern are previously provided on this display region. Further, in each first plate, electrode lead-out terminals connected to the respective picture element electrodes are previously disposed along the marginal edges adjacent to the two sides described above. The liquid crystal display device further comprises a transparent second plate having a common electrode previously disposed on its surface opposite to the display surface of the first plate assembly, the common electrode having an area large enough to cover at least the entire display region of the first plate assembly, a third plate, means for fixing the first plate assembly relative to the second and third plates so as to locate the first plate assembly between the second plate and the third plate, and a liquid crystal material enclosed at least between the second plate and the first plate assembly.
Inventors
- 👤 Masakatsu Saitoh
- 👤 Yuko Kumisawa
- 👤 Jun Yamada
- 👤 Kohzoh Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:00
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02F1/1333; G02F1/13336
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
309 words
A multipanel liquid crystal display device comprising: a first plate assembly including two or four first small plates of square shape disposed side-by-side on a common plane to form a substantially continuous large square shape plane, said large square shape plane having a marginal region along four sides of the large square shape plane and a display region surrounded by said marginal region; first electrode means formed in a matrix pattern on one main surface of each of said first plates and including picture element electrodes disposed on an area of said one main surface corresponding to a part of said display region, and electrode terminals disposed on an area of said one main surface corresponding to a part of said marginal region and connected to said picture element electrodes, respectively; a transparent second plate of square shape having one main surface of a size sufficient to cover at least said display region of said first plate assembly; a transparent common electrode formed on said one main surface of said second plate; a third plate of square shape facing to said first plate assembly; means for fixing said first plate assembly and said second and third plates such that said first plate assembly is disposed between said second and third plates with a first space between said first plate assembly and said second plate and a second space between said first plate assembly and said third plate and for tightly sealing said first and second spaces from the outside while allowing said first and second spaces to communicate with each other; and a liquid crystal material filled in said first and second spaces, an orientation of said liquid crystal material filled in said first space being controllable by energization of said picture element electrodes, and an orientation of said liquid crystal material filled in said second space being fixed.
Claim 2
Dependent Claim
309 words
A multipanel liquid crystal display device comprising: a first plate assembly including two or four first small plates of square shape disposed side-by-side on a common plane to form a substantially continuous large square shape plane, said large square shape plane having a marginal region along four sides of the large square shape plane and a display region surrounded by said marginal region; first electrode means formed in a matrix pattern on one main surface of each of said first plates and including picture element electrodes disposed on an area of said one main surface corresponding to a part of said display region, and electrode terminals disposed on an area of said one main surface corresponding to a part of said marginal region and connected to said picture element electrodes, respectively; a transparent second plate of square shape having one main surface of a size sufficient to cover at least said display region of said first plate assembly; a transparent common electrode formed on said one main surface of said second plate; a third plate of square shape facing to said first plate assembly; means for fixing said first plate assembly and said second and third plates such that said first plate assembly is disposed between said second and third plates with a first space between said first plate assembly and said second plate and a second space between said first plate assembly and said third plate and for tightly sealing said first and second spaces from the outside while allowing said first and second spaces to communicate with each other; and a liquid crystal material filled in said first and second spaces, an orientation of said liquid crystal material filled in said first space being controllable by energization of said picture element electrodes, and an orientation of said liquid crystal material filled in said second space being fixed.
Claim 3
Dependent Claim
45 words
A multipanel liquid crystal display device according to claim 1, wherein said first and third plates are made of a transparent material, and said liquid crystal material filled in said second space is oriented in a direction perpendicular with respect to said first plate assembly.
Claim 4
Dependent Claim
34 words
A multipanel liquid crystal display device according to claim 1, wherein said picture element electrodes provided on each of said first plates constituting said first plate assembly are made of a light reflective material.
Claim 5
Dependent Claim
49 words
A multipanel liquid crystal display device according to claim 1, wherein said first plate assembly is tightly fixed to said second and third plates, respectively so that said first and second spaces communicate with each other only through gaps formed between any adjacent two of said small first plates.
Claim 6
Dependent Claim
37 words
A multipanel liquid crystal display device according to claim 1, wherein said third plate is tightly fixed to said second plate such that said first plate assembly and said first space are disposed within said second space.
Claim 7
Dependent Claim
245 words
A multipanel liquid crystal display device comprising: a first plate assembly including two or four first small plates of square shape disposed side-by-side on a common plane to form a substantially continuous large square shape plane, said large square shape plane having a marginal region along four sides of the large square shape plane and a display region surrounded by said marginal region; first electrode means form®d in a matrix pattern on one main surface of each of said first plates and including picture element electrodes disposed on an area of said one main surface corresponding to a part of said display region, and electrode terminals disposed on an area of said one main surface corresponding to a part of said marginal region and connected to said picture element electrodes, respectively; a transparent second plate of square shape having one main surface of a size sufficient to cover at least said display region of said first plate assembly and fixed to said first plate assembly with a space between said first plate assembly and said second plate; a transparent common electrode formed on said one main surface of said second plate; a third plate of square shape fixed by a bonding agent to said first plate assembly so as to seal any gap formed between any adjacent two of said first small plates; and a liquid crystal material filled in said first space and having an orientation controllable by energization of said picture element electrodes.
Claim 8
Dependent Claim
245 words
A multipanel liquid crystal display device comprising: a first plate assembly including two or four first small plates of square shape disposed side-by-side on a common plane to form a substantially continuous large square shape plane, said large square shape plane having a marginal region along four sides of the large square shape plane and a display region surrounded by said marginal region; first electrode means form®d in a matrix pattern on one main surface of each of said first plates and including picture element electrodes disposed on an area of said one main surface corresponding to a part of said display region, and electrode terminals disposed on an area of said one main surface corresponding to a part of said marginal region and connected to said picture element electrodes, respectively; a transparent second plate of square shape having one main surface of a size sufficient to cover at least said display region of said first plate assembly and fixed to said first plate assembly with a space between said first plate assembly and said second plate; a transparent common electrode formed on said one main surface of said second plate; a third plate of square shape fixed by a bonding agent to said first plate assembly so as to seal any gap formed between any adjacent two of said first small plates; and a liquid crystal material filled in said first space and having an orientation controllable by energization of said picture element electrodes.
Claim 9
Dependent Claim
22 words
A multipanel liquid crystal display device according to claim 6, wherein said picture element electrodes are made of a light reflective material.
Claim 10
Dependent Claim
35 words
A multipanel liquid crystal display device according to claim 6, wherein said first and second plates and said bonding agent fixed said third plate to said first plate assembly are made of a transparent material.
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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |