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US4553143A Expired / Lapsed US ⏱️ 0.0 years remaining

Low cost panel display addressing structure

Assignee: Unisys Corp
•
Filing: 1982-07-12
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Granted: 1985-11-12
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Expires: 2002-07-12
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Abstract

Abstract A flat panel display in which photoresistive dividers on a first substrate are coupled to the leads of an optical display on a second substrate, such as an electroluminescent panel, by means of elastomeric connectors for coupling the photoresistor conductive leads to corresponding leads of the optical display means.

Inventors

  • 👤 Claude D. Lustig

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 23:22
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G09G2310/00; G09G2310/02; G09G2310/0264; G09G2310/0267; G09G2310/0275

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 227 words
A flat panel display comprising: a scanning discharge light source including: coupling light sources for sequentially illuminating a plurality of coupling photoresistors, said sequential illumination being substantially in synchronism with addressing pulses applied to said coupling photoresistors, and decoupling light sources for sequentially illuminating a plurality of decoupling photoresistors at a predetermined interval subsequent to illumination of said coupling photoresistors; photoresistor divider means on a first substrate including a plurality of conductive output leads on said first substrate and further including at least one terminal adapted to receive said addressing pulses, for coupling said addressing pulses through selected coupling photoresistors to selected ones of said plurality of conductive output leads upon selective illumination by said coupling light source, wherein said photoresistor divider means comprises said plurality of coupling photoresistors each coupled at a first end to said terminal means and at a second end to each of said plurality of decoupling photoresistors, each of said decoupling photoresistors is coupled between ground potential and a corresponding one of said plurality of coupling photoresistors, each of said plurality of conductive output leads is coupled to a junction between each of said coupling photoresistors and decoupling photoresistors; and optical display means on a second substrate having a plurality of conductive input leads coupled to said plurality of conductive output leads for providing optical signals in response to said addressing signals.
Claim 2
Dependent Claim 227 words
A flat panel display comprising: a scanning discharge light source including: coupling light sources for sequentially illuminating a plurality of coupling photoresistors, said sequential illumination being substantially in synchronism with addressing pulses applied to said coupling photoresistors, and decoupling light sources for sequentially illuminating a plurality of decoupling photoresistors at a predetermined interval subsequent to illumination of said coupling photoresistors; photoresistor divider means on a first substrate including a plurality of conductive output leads on said first substrate and further including at least one terminal adapted to receive said addressing pulses, for coupling said addressing pulses through selected coupling photoresistors to selected ones of said plurality of conductive output leads upon selective illumination by said coupling light source, wherein said photoresistor divider means comprises said plurality of coupling photoresistors each coupled at a first end to said terminal means and at a second end to each of said plurality of decoupling photoresistors, each of said decoupling photoresistors is coupled between ground potential and a corresponding one of said plurality of coupling photoresistors, each of said plurality of conductive output leads is coupled to a junction between each of said coupling photoresistors and decoupling photoresistors; and optical display means on a second substrate having a plurality of conductive input leads coupled to said plurality of conductive output leads for providing optical signals in response to said addressing signals.
Claim 3
Dependent Claim 15 words
The apparatus according to claim 1 wherein said optical display means comprises an electroluminescent panel.
Claim 4
Dependent Claim 16 words
The apparatus according to claim 1 wherein said optical display means comprises an a.c. plasma panel.
Claim 5
Dependent Claim 38 words
The apparatus according to the claim 1 wherein said conductive output leads and conductive input leads are coupled by an evaporated conductor, said conductor bridges corresponding ones of said pluralities of said conductive output and conductive input leads.
Claim 6
Dependent Claim 38 words
The apparatus according to claim 1 wherein said conductive output leads and conductive input leads are coupled by an elastomeric conductor, said elastomeric connector bridges corresponding ones of said pluralities of said conductive output and conductive input leads.

References Cited (Backward Citations)

US3078373A Cited
US3940757A Cited
US4189729A Cited
US4392131A Cited
US4367467A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-11-11 1989-05-13 1989-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-11-11 1993-05-13 1993-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-11-11 1997-05-13 1997-11-12 $7700.00 Window Closed / Lapsed

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