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US4404493A Expired / Lapsed US ⏱️ 0.0 years remaining

Picture image display apparatus

Assignee: Panasonic Holdings Corp
•
Filing: 1981-04-03
•
Granted: 1983-09-13
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Expires: 2001-04-03
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Abstract

Abstract The picture image display apparatus in accordance with the present invention comprises: a flat type vacuum enclosure having a transparent face panel, an electron beam emitter which emits a predetermined number of electron beams disposed in a row in selected positions, a row of control electrodes to control intensities of said electron beams, a row of parallel deflection electrodes, every other one of them being first electrodes commonly connected each other, the other ones of them being second electrodes commonly connected to each other, a phosphor screen formed on the inner face of said face panel and, an anode of thin metal film formed on said surface of said phosphor screen, wherein the apparatus is characterized in that every gap defined by one of said first electrodes and one of said second electrode neighboring thereto form deflection electric fields of opposite directions to each other, and said gaps are disposed in a manner that said electron beams simultaneously pass through every said deflection gap.

Inventors

  • 👤 Kinzo Nonomura
  • 👤 Masanori Watanabe
  • 👤 Yoshinobu Takesako
  • 👤 Hiroyuki Irie
  • 👤 Susumu Ide

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:28
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/467; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/126

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 166 words
A picture image display apparatus comprising: a flat type vacuum enclosure having a transparent face panel, an electron beam emitter which emits a predetermined number of electron beams disposed in a row in selected positions, a row of control electrodes to control intensities of said electron beams, a row of parallel deflection electrodes, every other one of them being first electrodes commonly connected to each other, the other ones of them being second electrodes commonly connected to each other, a phosphor screen formed on the inner face of said face panel, and an anode of thin metal film formed on the surface of said phosphor screen, wherein the apparatus is characterized in that every one of said first electrodes and a neighboring one of said second electrodes form a deflection gap, neighboring one of said gaps have electric fields of opposite directions relative to each other, and said gaps are disposed in a manner such that said electron beams simultaneously pass through every said deflection gap.
Claim 2
Dependent Claim 166 words
A picture image display apparatus comprising: a flat type vacuum enclosure having a transparent face panel, an electron beam emitter which emits a predetermined number of electron beams disposed in a row in selected positions, a row of control electrodes to control intensities of said electron beams, a row of parallel deflection electrodes, every other one of them being first electrodes commonly connected to each other, the other ones of them being second electrodes commonly connected to each other, a phosphor screen formed on the inner face of said face panel, and an anode of thin metal film formed on the surface of said phosphor screen, wherein the apparatus is characterized in that every one of said first electrodes and a neighboring one of said second electrodes form a deflection gap, neighboring one of said gaps have electric fields of opposite directions relative to each other, and said gaps are disposed in a manner such that said electron beams simultaneously pass through every said deflection gap.
Claim 3
Dependent Claim 23 words
A picture image display apparatus in accordance with claim 1, wherein said electron beam emitter comprises a plural number of linear thermionic cathodes.
Claim 4
Dependent Claim 71 words
A picture image display apparatus in accordance with claim 2 wherein said electron beam emitter comprises an extractor electrode disposed under said linear thermionic cathodes and having apertures to pass electron beams therethrough, said control electrodes being disposed under said apertures and every said control electrode having electron beam passing openings disposed under said apertures, and every gaps formed between said deflection electrodes being disposed under said electron beam passing openings.
Claim 5
Dependent Claim 44 words
A picture image display apparatus in accordance with claim 1, wherein said commonly connected first electrodes are connected to a first terminal and said commonly connected second electrodes are connected to a second terminal for receiving signals impressed across said first and second terminals.

References Cited (Backward Citations)

US2972719A Cited
US3935500A Cited
US4227117A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-09-12 1987-03-14 1987-09-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-09-12 1991-03-14 1991-09-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-09-12 1995-03-14 1995-09-13 $7700.00 Window Closed / Lapsed

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