Patent US5029984A successfully refreshed from Google Patents.
US5029984A
Expired / Lapsed
US
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Liquid crystal display device
Assignee: Mitsubishi Electric Corp
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Filing: 1989-02-08
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Granted: 1991-07-09
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Expires: 2009-02-08
Abstract
Abstract In a liquid crystal display device with a drive circuit board connected to the peripheral portion of a liquid crystal display panel, the circuit board is disposed behind the liquid crystal display panel and also the circuit board is connected with the liquid crystal display panel by means of a connecting member in film form, whereby the liquid crystal display device is miniaturized and efficiency of the assembly work is improved. Further, the circuit board is made up of plural drive circuit modules of the same type whereby the efficiency in the assembly and inspection process is still improved.
Inventors
- 👤 Kohei Adachi
- 👤 Hideaki Otsuki
- 👤 Kenichi Niki
- 👤 Hayato Takasago
- 👤 Tetsuro Makita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:03
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13452; H; H01; H01R; H01R12/00; H01R12/70; H01R12/7076; H10; H10W; H10W90/00; H10W72/00; H10W72/50; H10W72/541; H10W72/5445
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
A liquid crystal display device comprising: a liquid crystal display panel; and a drive circuit for said liquid crystal display panel connected to a peripheral portion of said display panel, said drive circuit comprising a plurality of drive circuit modules each having a plurality of ICs mounted on a circuit board arranged on a rear surface of said liquid crystal display panel in a direction substantially perpendicular thereto, the ICs and interconnection of the ICs on one board being substantially the same as on any other, the drive circuit modules and the liquid crystal display panel being electrically connected by a film-like connecting material, one of said drive circuit modules having an IC mounting surface as a connecting surface and another of said drive circuit modules having an opposite surface of the IC mounting surface as a connecting surface.
Claim 2
Dependent Claim
139 words
A liquid crystal display device comprising: a liquid crystal display panel; and a drive circuit for said liquid crystal display panel connected to a peripheral portion of said display panel, said drive circuit comprising a plurality of drive circuit modules each having a plurality of ICs mounted on a circuit board arranged on a rear surface of said liquid crystal display panel in a direction substantially perpendicular thereto, the ICs and interconnection of the ICs on one board being substantially the same as on any other, the drive circuit modules and the liquid crystal display panel being electrically connected by a film-like connecting material, one of said drive circuit modules having an IC mounting surface as a connecting surface and another of said drive circuit modules having an opposite surface of the IC mounting surface as a connecting surface.
Claim 3
Dependent Claim
84 words
A liquid crystal display device according to claim 1, wherein the liquid crystal display panel includes a transparent conductive film formed on a glass plate of the liquid crystal display panel, and the circuit board includes a row of terminals formed on the circuit board, and wherein the film-like connection material comprises a heat seal type connector having an electrical conductor part and an insulation part pattern printed thereon and which is thermally pressed to said transparent conductive film and the row of terminals.
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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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |