Patent US4600273A successfully refreshed from Google Patents.
US4600273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel having conductive contact media
Assignee: Seiko Epson Corp
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Filing: 1983-04-19
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Granted: 1986-07-15
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Expires: 2003-04-19
Abstract
Abstract A liquid crystal display panel comprising opposed substrates, electrodes on the inside opposed surfaces of said substrates and arranged opposite to each other to sandwich a display layer, a contact media for electrically connecting an electrode on one substrate with an electrode on the other substrate and disposed between said electrodes of said substrates, and a binder between said substrates and fixably engaging said contact media with said electrodes, the diameter of said contact media selected to be substantially the same as the thickness of a liquid crystal cell layer. The contact media comprises a non-conductive core electroless plated with a conducting metal.
Inventors
- 👤 Yoshihiro Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/1339; G02F1/13392
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
125 words
A liquid crystal display panel comprising opposed substrates, electrodes on the inside opposed surfaces of said substrates and arranged opposite to each other to define a liquid crystal display layer including a contact portion with a contact media admixed with a binder disposed between the substrates for maintaining the substrates spaced apart and electrically connecting an electrode on one substrate with an electrode on the other substrate, the dimension of said contact media selected to be substantially the same as the thickness of a liquid crystal cell layer, said contact media containing a non-conductive core particle coated with a first conductive layer formed by electroless plating of the core particle and a second conductive layer comprising a precious metal formed on the first conductive layer.
Claim 2
Dependent Claim
125 words
A liquid crystal display panel comprising opposed substrates, electrodes on the inside opposed surfaces of said substrates and arranged opposite to each other to define a liquid crystal display layer including a contact portion with a contact media admixed with a binder disposed between the substrates for maintaining the substrates spaced apart and electrically connecting an electrode on one substrate with an electrode on the other substrate, the dimension of said contact media selected to be substantially the same as the thickness of a liquid crystal cell layer, said contact media containing a non-conductive core particle coated with a first conductive layer formed by electroless plating of the core particle and a second conductive layer comprising a precious metal formed on the first conductive layer.
Claim 3
Dependent Claim
26 words
A display panel, as described in claim 1, wherein the non-conductive core is selected from the group consisting of glass fibers, glass beads, and plastic balls.
Claim 4
Dependent Claim
34 words
A display panel, as described in claim 1, wherein the non-conductive core is coated by electroless plating of at least one metal selected from the group consisting of gold, silver, tin, copper and nickel.
Claim 5
Dependent Claim
13 words
The display panel of claim 3, wherein the second conductive layer is gold.
Claim 6
Dependent Claim
14 words
A display panel, as described in claim 1, wherein the non-conductive core is spherical.
Claim 7
Dependent Claim
16 words
A display panel, as described in claim 5, wherein the non-conductive particle comprises a plastic ball.
Claim 8
Dependent Claim
14 words
A display panel as described in claim 1, wherein the non-conductive core is cylindrical.
Claim 9
Dependent Claim
36 words
A display panel, as described in claim 7, wherein the non-conductive core comprises glass fibers having an average diameter of between about 3 and 12 μm and an average length of about 20 to 100 μm.
Claim 10
Dependent Claim
34 words
A display panel, as described in claim 1, wherein the contact media and binder comprise from about 0.1 to about 50 weight percent contact media to about 99.9 to about 50 weight percent binder.
Claim 11
Dependent Claim
23 words
A display panel, as described in claim 1, wherein the contact portion includes at least about 5 coated particles engaged by the binder.
Claim 12
Dependent Claim
21 words
A display panel, as described in claim 1, wherein the liquid crystal cell layer is between about 3 and 12 thick.
Claim 13
Dependent Claim
42 words
A display panel, as described in claim 1, wherein the cell thickness is substantially the same as the diameter of the engaged contact media to enable the upper and lower electrodes to be secured in fixed parallel opposition by the contact media.
Claim 14
Dependent Claim
23 words
A display panel as described in claim 1, wherein the binder includes a plurality of particles of a conductive metal in a paste.
Claim 15
Dependent Claim
17 words
The display panel of claim 1, having two electroless plated conductive layers on the non-conductive core particle.
Claim 16
Dependent Claim
32 words
The display panel of claim 14, wherein a first layer of electroless-plated nickel is on the non-conductive core and a second layer of electroless plated gold is disposed on the nickel layer.
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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |