EP0400565A3 - Projection cathode-ray tube - Google Patents

Projection cathode-ray tube Download PDF

Info

Publication number
EP0400565A3
EP0400565A3 EP19900110139 EP90110139A EP0400565A3 EP 0400565 A3 EP0400565 A3 EP 0400565A3 EP 19900110139 EP19900110139 EP 19900110139 EP 90110139 A EP90110139 A EP 90110139A EP 0400565 A3 EP0400565 A3 EP 0400565A3
Authority
EP
European Patent Office
Prior art keywords
panel
pnl
funnel
ray tube
fnl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19900110139
Other languages
German (de)
French (fr)
Other versions
EP0400565A2 (en
Inventor
Tetsuo Asano
Eiichi Yamazaki
Yasukazu Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP13467389A external-priority patent/JPH031430A/en
Priority claimed from JP21477989A external-priority patent/JPH0378945A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0400565A2 publication Critical patent/EP0400565A2/en
Publication of EP0400565A3 publication Critical patent/EP0400565A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
    • H01J2229/8916—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices inside the vessel

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A projection cathode-ray tube comprises a board-shaped panel (PNL) with no skirt portion whose inner face is convex and has a given curvature. A multilayer interference film (MIF), a phosphor layer (PH), and a metal-backed layer (MBK) are formed in that order on the inner surface of the panel. A peripheral portion of the panel (PNL) is welded to a funnel (FNL) using frit glass (FRT). The panel and the funnel are electrically connected together by means of a conductive film (CC). There­ fore, no brightness decreases nor color shade occurs in the panel peripheral portion, and reliable high-voltage conduction is provided between the panel (PNL) and the funnel (FNL).
EP19900110139 1989-05-30 1990-05-29 Projection cathode-ray tube Withdrawn EP0400565A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP134673/89 1989-05-30
JP13467389A JPH031430A (en) 1989-05-30 1989-05-30 projection type cathode ray tube
JP214779/89 1989-08-23
JP21477989A JPH0378945A (en) 1989-08-23 1989-08-23 Cathode-ray tube

Publications (2)

Publication Number Publication Date
EP0400565A2 EP0400565A2 (en) 1990-12-05
EP0400565A3 true EP0400565A3 (en) 1991-09-11

Family

ID=26468712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110139 Withdrawn EP0400565A3 (en) 1989-05-30 1990-05-29 Projection cathode-ray tube

Country Status (2)

Country Link
EP (1) EP0400565A3 (en)
KR (1) KR900019117A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597103B1 (en) * 1999-12-22 2003-07-22 Koninklijke Philips Electronics N.V. Display tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2013974A (en) * 1978-02-06 1979-08-15 Kloss H E Projection television tube and process for forming same
EP0206381A1 (en) * 1985-05-29 1986-12-30 Koninklijke Philips Electronics N.V. Projection television display tube and projection television device comprising at least one such tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2013974A (en) * 1978-02-06 1979-08-15 Kloss H E Projection television tube and process for forming same
EP0206381A1 (en) * 1985-05-29 1986-12-30 Koninklijke Philips Electronics N.V. Projection television display tube and projection television device comprising at least one such tube

Also Published As

Publication number Publication date
KR900019117A (en) 1990-12-24
EP0400565A2 (en) 1990-12-05

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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17P Request for examination filed

Effective date: 19901220

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19950617