Patent US5680183A successfully refreshed from Google Patents.
US5680183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure of liquid crystal display device for easy assembly and disassembly
Assignee: Panasonic Liquid Crystal Display Co Ltd
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Filing: 1995-06-05
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Granted: 1997-10-21
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Expires: 2015-06-05
Abstract
Abstract A liquid crystal display device which comprises: a shield casing made of a metal plate and having fixing pawls and fixing hooks; an middle frame for holding a liquid crystal display; and a lower casing for packaging back lights, wherein the fixing pawls of said shield casing are bent in corresponding recesses formed in the middle frame, and wherein the fixing hooks of said shield casing are fitted on corresponding projections formed on the lower casing.
Inventors
- 👤 Masumi Sasuga
- 👤 Junichi Ohwada
- 👤 Akira Kobayashi
- 👤 Masaru Fujita
- 👤 Hiroshi Nakamoto
- 👤 Ryu Ono
- 👤 Tsutomu Isono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:59
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133308; G02F1/1335; G02F1/1336; G02F1/133602; G02F1/133604; G02F1/133605; G02F1/133608; G02F1/1345; G02F1/13452; G02F1/133317; G02F1/13332; G02F1/133328; G02F1/133331; G02F1/133334; G02F1/133612; G02F1/133628; G02F1/136; G02F1/1362; G02F1/1368; G02F2201/00; G02F2201/46; G02F2201/465; G09; G09G; G09G2300/00; G09G2300/04; G09G2300/0421; G09G2300/0426; G09G2330/00; G09G2330/06; G09G2330/08; G09G3/00; G09G3/20; G09G3/34; G09G3/3406; G09G3/36; G09G3/3611; G09G3/3648; H; H05; H05K; H05K1/00; H05K1/02; H05K1/14; H05K3/00; H05K3/36; H05K3/361
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
150 words
A liquid crystal display device comprising: a liquid crystal display panel having a driving circuit disposed at least partially around and connected with said liquid crystal display panel; a shield casing made of a metal plate, and covering said liquid crystal display panel and said driving circuit other than at a display portion of said liquid crystal display panel; wherein said driving circuit comprises a plurality of separated units, each of said separated units being arranged in a relation to an adjacent separated unit and being electrically connected to an adjacent separated unit by a flexible cable, each of said separated units having at least one ground pad which is electrically connected to a ground line of said separated unit; and wherein said shield casing is electrically connected to each of said separated units at a portion of at least one of said ground pads of a respective separated unit.
Claim 2
Dependent Claim
150 words
A liquid crystal display device comprising: a liquid crystal display panel having a driving circuit disposed at least partially around and connected with said liquid crystal display panel; a shield casing made of a metal plate, and covering said liquid crystal display panel and said driving circuit other than at a display portion of said liquid crystal display panel; wherein said driving circuit comprises a plurality of separated units, each of said separated units being arranged in a relation to an adjacent separated unit and being electrically connected to an adjacent separated unit by a flexible cable, each of said separated units having at least one ground pad which is electrically connected to a ground line of said separated unit; and wherein said shield casing is electrically connected to each of said separated units at a portion of at least one of said ground pads of a respective separated unit.
Claim 3
Dependent Claim
17 words
A liquid crystal display device according to claim 1, wherein said flexible cable is a flat cable.
Claim 4
Dependent Claim
23 words
A liquid crystal display device according to claim 1, wherein each of said separated units is movable with respect to an adjacent unit.
Claim 5
Dependent Claim
25 words
A liquid crystal display device according to claim 1, wherein each of said separated units comprises a printed circuit board and IC chips mounted thereon.
Claim 6
Dependent Claim
23 words
A liquid crystal display device according to claim 1, wherein said flexible cable comprises a flexible film and a plurality of lead lines.
Claim 7
Dependent Claim
17 words
A liquid crystal display device according to claim 5, wherein said flexible film is made of polymer.
Claim 8
Dependent Claim
17 words
A liquid crystal display device according to claim 5, wherein said flexible film is made of polyethylene.
Claim 9
Dependent Claim
18 words
A liquid crystal display device according to claim 5, wherein said flexible film is made of polyvinyl alcohol.
Claim 10
Dependent Claim
19 words
A liquid crystal display device according to claim 5, wherein said lead lines are fixed by said flexible film.
Claim 11
Dependent Claim
191 words
A liquid crystal display device comprising: a liquid crystal display panel connected with a driving circuit; a shield casing made of a metal plate, and covering said driving circuit and partially covering said liquid crystal display panel; wherein said driving circuit comprises a plurality of separated printed circuit boards having at least one tape carrier package connected to said associated separated printed circuit board by soldering, said at least one tape carrier package having at least one IC chip and being connected to external connection terminals of said liquid crystal display panel by an anisotropic conductive film, each of said separated print circuit boards being arranged in non-overlapping relation with an adjacent separated printed circuit board and being electrically connected to an adjacent separated printed circuit board by a flexible cable, each of said separated printed circuit boards having at least one ground pad which is electrically connected to a ground line of said separated printed circuit board; and wherein said shield casing is electrically connected to each of separated printed circuit boards at a portion of at least one of said ground pads of a respective separated printed circuit board.
Claim 12
Dependent Claim
191 words
A liquid crystal display device comprising: a liquid crystal display panel connected with a driving circuit; a shield casing made of a metal plate, and covering said driving circuit and partially covering said liquid crystal display panel; wherein said driving circuit comprises a plurality of separated printed circuit boards having at least one tape carrier package connected to said associated separated printed circuit board by soldering, said at least one tape carrier package having at least one IC chip and being connected to external connection terminals of said liquid crystal display panel by an anisotropic conductive film, each of said separated print circuit boards being arranged in non-overlapping relation with an adjacent separated printed circuit board and being electrically connected to an adjacent separated printed circuit board by a flexible cable, each of said separated printed circuit boards having at least one ground pad which is electrically connected to a ground line of said separated printed circuit board; and wherein said shield casing is electrically connected to each of separated printed circuit boards at a portion of at least one of said ground pads of a respective separated printed circuit board.
Claim 13
Dependent Claim
17 words
A liquid crystal display device according to claim 10, wherein said flexible cable is a flat cable.
Claim 14
Dependent Claim
28 words
A liquid crystal display device according to claim 10, wherein each of said separated printed circuit boards is movable with respect to an adjacent separated printed circuit board.
Claim 15
Dependent Claim
23 words
A liquid crystal display device according to claim 10, wherein said flexible cable comprises a flexible film and a plurality of lead lines.
Claim 16
Dependent Claim
18 words
A liquid crystal display device according to claim 13, wherein said flexible film is made of a polymer.
Claim 17
Dependent Claim
17 words
A liquid crystal display device according to claim 13, wherein said flexible film is made of polyethylene.
Claim 18
Dependent Claim
18 words
A liquid crystal display device according to claim 13, wherein said flexible film is made of polyvinyl alcohol.
Claim 19
Dependent Claim
19 words
A liquid crystal display device according to claim 13, wherein said lead lines are fixed by said flexible film.
Claim 20
Dependent Claim
245 words
A liquid crystal display device comprising: a liquid crystal display panel having a plurality of scanning signal lines and a plurality of video signal lines; a scanning signal line driving circuit electrically connected to said scanning signal lines and arranged at a peripheral portion of said liquid crystal display panel; a video signal line driving circuit electrically connected to said video signal lines and arranged at another peripheral portion of said liquid crystal display panel; and a shield casing made of a metal plate covering said scanning signal line driving circuit and video signal line driving circuit and partially covering said liquid crystal display panel; wherein said scanning signal line driving circuit is disposed on a first printed circuit board and said video signal line driving circuit is disposed on a second printed circuit board, said first printed circuit board and said second printed circuit board being electrically connected to each other by a flexible cable, said first printed circuit board having at least a first ground pad which is electrically connected to a ground line of said first printed circuit board, and said second printed circuit board having at least a second ground pad which is electrically connected to a ground line of said second printed circuit board; and wherein said shield casing is electrically connected to both of said at least first ground pad of said first printed circuit board and said at least second ground pad of said second printed circuit board.
Claim 21
Dependent Claim
245 words
A liquid crystal display device comprising: a liquid crystal display panel having a plurality of scanning signal lines and a plurality of video signal lines; a scanning signal line driving circuit electrically connected to said scanning signal lines and arranged at a peripheral portion of said liquid crystal display panel; a video signal line driving circuit electrically connected to said video signal lines and arranged at another peripheral portion of said liquid crystal display panel; and a shield casing made of a metal plate covering said scanning signal line driving circuit and video signal line driving circuit and partially covering said liquid crystal display panel; wherein said scanning signal line driving circuit is disposed on a first printed circuit board and said video signal line driving circuit is disposed on a second printed circuit board, said first printed circuit board and said second printed circuit board being electrically connected to each other by a flexible cable, said first printed circuit board having at least a first ground pad which is electrically connected to a ground line of said first printed circuit board, and said second printed circuit board having at least a second ground pad which is electrically connected to a ground line of said second printed circuit board; and wherein said shield casing is electrically connected to both of said at least first ground pad of said first printed circuit board and said at least second ground pad of said second printed circuit board.
Claim 22
Dependent Claim
53 words
A liquid crystal display device according to claim 18, wherein at least a first IC driver chip is set between said liquid crystal display panel and said first printed circuit board, and at least a second IC driver chip is set between said liquid crystal display panel and said second printed circuit board.
Claim 23
Dependent Claim
76 words
A liquid crystal display device according to claim 18, further comprising at least a first tape carrier having at least a first IC chip mounted thereon and being electrically connected to said first printed circuit board and to said liquid crystal display panel, and at least a second tape carrier having at least a second IC chip mounted thereon and being electrically connected to said second printed circuit board and to said liquid crystal display panel.
Claim 24
Dependent Claim
17 words
A liquid crystal display device according to claim 18, wherein said flexible cable is a flat cable.
Claim 25
Dependent Claim
23 words
A liquid crystal display device according to claim 18, wherein said flexible cable comprises a flexible film and a plurality of lead lines.
Claim 26
Dependent Claim
17 words
A liquid crystal display device according to claim 18, wherein said flexible film is made of polymer.
Claim 27
Dependent Claim
17 words
A liquid crystal display device according to claim 18, wherein said flexible film is made of polyethylene.
Claim 28
Dependent Claim
18 words
A liquid crystal display device according to claim 18, wherein said flexible film is made of polyvinyl alcohol.
Claim 29
Dependent Claim
19 words
A liquid crystal display device according to claim 18, wherein said lead lines are fixed by said flexible film.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-20 | 2001-04-21 | 2001-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-20 | 2005-04-21 | 2005-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-20 | 2009-04-21 | 2009-10-21 | $7700.00 | Window Closed / Lapsed |