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EP1774558A4 - Cathode ray tube having an enhanced internal neutral density filter - Google Patents

Cathode ray tube having an enhanced internal neutral density filter

Info

Publication number
EP1774558A4
EP1774558A4 EP04757423A EP04757423A EP1774558A4 EP 1774558 A4 EP1774558 A4 EP 1774558A4 EP 04757423 A EP04757423 A EP 04757423A EP 04757423 A EP04757423 A EP 04757423A EP 1774558 A4 EP1774558 A4 EP 1774558A4
Authority
EP
European Patent Office
Prior art keywords
ray tube
cathode ray
neutral density
density filter
enhanced internal
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Withdrawn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
EP04757423A
Other languages
German (de)
French (fr)
Other versions
EP1774558A1 (en
Inventor
Farzad Parsapour
Bhanumurthy Venkatrama Subrahmanya Gunturi
Steven Anthony Colbert
Brian Thomas Collins
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.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
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
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of EP1774558A1 publication Critical patent/EP1774558A1/en
Publication of EP1774558A4 publication Critical patent/EP1774558A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • 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
    • 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
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/898—Spectral filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/244—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for cathode ray tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Luminescent Compositions (AREA)
EP04757423A 2004-08-05 2004-08-05 Cathode ray tube having an enhanced internal neutral density filter Withdrawn EP1774558A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/025292 WO2006022692A1 (en) 2004-08-05 2004-08-05 Cathode ray tube having an enhanced internal neutral density filter

Publications (2)

Publication Number Publication Date
EP1774558A1 EP1774558A1 (en) 2007-04-18
EP1774558A4 true EP1774558A4 (en) 2010-05-05

Family

ID=35967778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04757423A Withdrawn EP1774558A4 (en) 2004-08-05 2004-08-05 Cathode ray tube having an enhanced internal neutral density filter

Country Status (3)

Country Link
EP (1) EP1774558A4 (en)
CN (1) CN101040363A (en)
WO (1) WO2006022692A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010001110A (en) * 1999-06-02 2001-01-05 구자홍 Structure phosphor layer and method manufacturing that in color CRT
EP1077469A2 (en) * 1999-08-19 2001-02-21 Samsung SDI Co., Ltd. Cathode ray tube
EP1089313A2 (en) * 1999-09-30 2001-04-04 Hitachi, Ltd. Color cathode ray tube with flat panel face
WO2004079768A1 (en) * 2003-02-27 2004-09-16 Thomson Licensing S. A. Cathode ray tube having an internal neutral density filter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849641A (en) * 1981-09-21 1983-03-23 Hoya Corp Contrast filter for color crt display device
US6960873B2 (en) * 2002-08-19 2005-11-01 Thomson Licensing CRT having internal neutral density filter field of use

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010001110A (en) * 1999-06-02 2001-01-05 구자홍 Structure phosphor layer and method manufacturing that in color CRT
EP1077469A2 (en) * 1999-08-19 2001-02-21 Samsung SDI Co., Ltd. Cathode ray tube
EP1089313A2 (en) * 1999-09-30 2001-04-04 Hitachi, Ltd. Color cathode ray tube with flat panel face
WO2004079768A1 (en) * 2003-02-27 2004-09-16 Thomson Licensing S. A. Cathode ray tube having an internal neutral density filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006022692A1 *

Also Published As

Publication number Publication date
EP1774558A1 (en) 2007-04-18
WO2006022692A1 (en) 2006-03-02
CN101040363A (en) 2007-09-19

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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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070122

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THOMSON LICENSING SAS

A4 Supplementary search report drawn up and despatched

Effective date: 20100408

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100302