US4543573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel
Assignee: Hitachi Ltd
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Filing: 1982-03-30
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Granted: 1985-09-24
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Expires: 2002-03-30
Abstract
Abstract A display panel includes a pair of substrates arranged face to face with each other with a predetermined gap therebetween, at least a pair of electrodes each provided on a corresponding one of facing surfaces of the substrates, and a display substance provided between the electrodes. A picture element is made up of a pair of facing portions of the electrodes and a portion of the display substance situated between the facing portions. At least one of the electrodes is made up of a multiplicity of picture element electrodes formed of a transparent conductive film and juxtaposed to each other and a contact metal member for substantially making an electrical connection of a plurality of ones of the picture element electrodes. The contact metal member is made up of a first layer made of chromium or a chromium alloy and a second layer formed on the first layer and made of nickel or gold.
Inventors
- 👤 Moriaki Fuyama
- 👤 Katsumi Tamura
- 👤 Makoto Morijiri
- 👤 Mamoru Sawahata
- 👤 Hiroaki Hachino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; G02F1/1345; H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H10; H10F; H10F71/00; H10F71/138; H01; H01J; H01J2211/00; H01J2211/20; H01J2211/22; H01J2211/225; H05K2201/00; H05K2201/03; H05K2201/032; H05K2201/0326; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
152 words
A display panel comprising: a pair of substrates arranged face to face with each other with a predetermined gap therebetween; at least a pair of electrodes each provided on a corresponding one of facing surfaces of said substrates, at least one of said electrodes being made up of a multiplicity of picture element electrodes which are juxtaposed to each other and formed of a transparent conductive film, and a transparent conductive film and a contact metal member for substantially making an electrical connection of a plurality of ones of said picture element electrodes, said contact metal member being made up of a first layer formed on said transparent conductive film forming said electrical connection and a second layer, said first layer being made of chromium or a chromium alloy, said second layer being formed on said first layer and made of nickel or gold; and a display substance provided between said electrodes.
Claim 2
Dependent Claim
152 words
A display panel comprising: a pair of substrates arranged face to face with each other with a predetermined gap therebetween; at least a pair of electrodes each provided on a corresponding one of facing surfaces of said substrates, at least one of said electrodes being made up of a multiplicity of picture element electrodes which are juxtaposed to each other and formed of a transparent conductive film, and a transparent conductive film and a contact metal member for substantially making an electrical connection of a plurality of ones of said picture element electrodes, said contact metal member being made up of a first layer formed on said transparent conductive film forming said electrical connection and a second layer, said first layer being made of chromium or a chromium alloy, said second layer being formed on said first layer and made of nickel or gold; and a display substance provided between said electrodes.
Claim 3
Dependent Claim
59 words
A display panel according to claim 1, wherein at least one of said electrodes is made up of a multiplicity of picture element electrodes which are regularly juxtaposed and formed of a transparent conductive film, and at least two contact metal members each for substantially making an electrical connection of a plurality of ones of said picture element electrodes.
Claim 4
Dependent Claim
47 words
A display panel according to claims 1 or 2 wherein a third layer made of copper is formed on said second layer of said contact metal member at a connecting terminal portion of said contact metal member for connecting an external circuit to said contact metal member.
Claim 5
Dependent Claim
33 words
A display panel according to claims 1 or 2 wherein when said first layer is made of chromium, the thickness of said first layer lies within a range from 250 to 1000 Å.
Claim 6
Dependent Claim
16 words
A display panel according to claim 1 wherein said display substance is a liquid crystal material.
Claim 7
Dependent Claim
45 words
A display panel according to claim 1, wherein a third layer made of copper is formed on said second layer of said contact metal member at a connecting terminal portion of said contact metal member for connecting an external circuit to said contact metal member.
Claim 8
Dependent Claim
31 words
A display panel according to claim 1, wherein when said first layer is made of chromium, the thickness of said first layer lies within a range from 250 to 1000 Å.
Claim 9
Dependent Claim
111 words
A display panel according to claim 1, wherein at least one other of said electrodes is made up of a multiplicity of picture element electrodes which are juxtaposed to each other and formed of a transparent conductive film, and a contact metal member for substantially making an electrical connection of a plurality of ones of said picture element electrodes of said at least one other of said electrodes, said contact metal member being made up of a first layer and a second layer, said first layer being made of chromium or a chromium alloy, and said second layer being formed on said first layer and being made of nickel or gold.
Claim 10
Dependent Claim
16 words
A display panel according to claim 3, wherein said display substance is a liquid crystal material.
Claim 11
Dependent Claim
16 words
A display panel according to claim 4, wherein said display substance is a liquid crystal material.
Claim 12
Dependent Claim
30 words
A display panel according to claim 3, wherein said first layer is made of chromium, the thickness of said first layer lies with a range from 250 to 1000 Å.
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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |