US4643526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device having a resin-coated IC chip
Assignee: Citizen Watch Co Ltd
•
Filing: 1985-05-07
•
Granted: 1987-02-17
•
Expires: 2005-05-07
Abstract
Abstract An IC chip is connected to terminal portions of conductive films on a lower substrate of a liquid crystal display panel by face down bonding. The IC chip and conductive films are coated with resin to protect the IC chip and films.
Inventors
- 👤 Haruo Watanabe
- 👤 Eiichi Tajima
- 👤 Masaaki Matsunaga
- 👤 Toshihide Hirohara
- 👤 Yoshio Iinuma
- 👤 Naotake Ando
- 👤 Shigeyuki Takahashi
- 👤 Teruaki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:33
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13452
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A liquid crystal display device comprising: a liquid crystal display panel having upper and lower substrates, conductive films provided on the underside of the upper substrate and on the lower substrate, a connecting portion formed on one of the substrates; terminal portions formed on the connecting portion and electrically connected to the conductive films on the substrate having the connecting portion; an IC chip having terminal portions on the underside thereof; conductive adhesives disposed between the ternimal portions on the connecting portion and the terminal portions of the IC chip to join both terminal portions with each other; and a nonconducting coating provided on the connecting portion covering the IC chip.
Claim 2
Dependent Claim
111 words
A liquid crystal display device comprising: a liquid crystal display panel having upper and lower substrates, conductive films provided on the underside of the upper substrate and on the lower substrate, a connecting portion formed on one of the substrates; terminal portions formed on the connecting portion and electrically connected to the conductive films on the substrate having the connecting portion; an IC chip having terminal portions on the underside thereof; conductive adhesives disposed between the ternimal portions on the connecting portion and the terminal portions of the IC chip to join both terminal portions with each other; and a nonconducting coating provided on the connecting portion covering the IC chip.
Claim 3
Dependent Claim
17 words
The liquid crystal display device according to claim 1 further comprising leads provided on the conductive films.
Claim 4
Dependent Claim
24 words
The liquid crystal display device according to claim 1 wherein the nonconducting coating is provided to further cover conductive films on the connecting portion.
Claim 5
Dependent Claim
31 words
The liquid crystal display device according to claim 1 wherein the space between the IC chip and the lower substrate is filled with resin different from the outside coating in characteristic.
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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |