CA2039822A1 - Cathode-ray tube having improved 16 x 9 aspect ratio faceplate panel - Google Patents

Cathode-ray tube having improved 16 x 9 aspect ratio faceplate panel

Info

Publication number
CA2039822A1
CA2039822A1 CA002039822A CA2039822A CA2039822A1 CA 2039822 A1 CA2039822 A1 CA 2039822A1 CA 002039822 A CA002039822 A CA 002039822A CA 2039822 A CA2039822 A CA 2039822A CA 2039822 A1 CA2039822 A1 CA 2039822A1
Authority
CA
Canada
Prior art keywords
cathode
long sides
faceplate panel
ray tube
sides
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.)
Granted
Application number
CA002039822A
Other languages
French (fr)
Other versions
CA2039822C (en
Inventor
Alfredo Maresca
Paolo Spina
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.)
Videocolor SpA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2039822A1 publication Critical patent/CA2039822A1/en
Application granted granted Critical
Publication of CA2039822C publication Critical patent/CA2039822C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof
    • 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
    • H01J2229/86—Vessels and containers
    • H01J2229/8613—Faceplates
    • H01J2229/8616—Faceplates characterised by shape
    • H01J2229/862—Parameterised shape, e.g. expression, relationship or equation

Landscapes

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

Abstract

The present invention provides an improvement in a cathode-ray tube that includes a rectangular faceplate panel having two peripheral long sides and two peripheral short sides, wherein the ratio of length of the long sides to the length of the short sides is approximately 16/9. The tube includes a major axis which parallels the two long sides and a minor axis which parallels the two short sides. A rectangular viewing screen is located on an inner surface of the faceplate panel. The improvement comprises the long sides of the panel having a radius of curvature in a plane of the major and minor axes that is about 7 to 10 times longer than a diagonal dimension of the viewing screen, and the ratio of the radius of curvature of the long sides to the radius of curvature of the short sides being in the range of about 1.6 to 1.9.
CA002039822A 1990-05-11 1991-04-04 Cathode-ray tube having improved 16 x 9 aspect ratio faceplate panel Expired - Lifetime CA2039822C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20271A/90 1990-05-11
IT20271A IT1239972B (en) 1990-05-11 1990-05-11 CATHODE TUBE HAVING A PERFECTED FRONT PANEL PANEL, WITH 16/9 "WIDTH / HEIGHT RATIO

Publications (2)

Publication Number Publication Date
CA2039822A1 true CA2039822A1 (en) 1991-11-12
CA2039822C CA2039822C (en) 2001-11-20

Family

ID=11165319

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002039822A Expired - Lifetime CA2039822C (en) 1990-05-11 1991-04-04 Cathode-ray tube having improved 16 x 9 aspect ratio faceplate panel

Country Status (12)

Country Link
JP (1) JP2611885B2 (en)
KR (1) KR940010952B1 (en)
CN (1) CN1018968B (en)
CA (1) CA2039822C (en)
CS (1) CS128391A2 (en)
CZ (1) CZ544U1 (en)
DE (2) DE4114606A1 (en)
FR (1) FR2662021B1 (en)
GB (1) GB2243945B (en)
IT (1) IT1239972B (en)
PL (1) PL164198B1 (en)
TR (1) TR25115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6570316B1 (en) 1999-08-21 2003-05-27 Schott Glas Television tube having substantially linear edges

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5319280A (en) * 1991-05-06 1994-06-07 U.S. Philips Corporation Color picture tube with reduced raster distortion and flat appearing display window
US6025676A (en) * 1996-03-06 2000-02-15 Kabushiki Kaisha Toshiba Cathode ray tube having improved curvature characteristics and method of fabrication thereof
US6011350A (en) * 1996-04-25 2000-01-04 Thomson Consumer Electronics, Inc. Color picture tube faceplate panel
EP0905742A1 (en) * 1997-03-14 1999-03-31 Kabushiki Kaisha Toshiba Color cathode ray tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146913A (en) * 1974-10-18 1976-04-22 Matsushita Electric Ind Co Ltd JIKIKIROKU SAISEISOCHI
US4483452A (en) * 1981-12-07 1984-11-20 Corning Glass Works Television bulb
NL8304181A (en) * 1983-12-06 1985-07-01 Philips Nv COLOR IMAGE TUBE.
JPH01155787A (en) * 1987-12-14 1989-06-19 Hitachi Ltd TV signal receiver
IT1239510B (en) * 1990-03-30 1993-11-03 Videocolor Spa CATHODE TUBE HAVING A PERFECTED FRONT SHEET, WITH 16/9 "WIDTH / HEIGHT RATIO

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6570316B1 (en) 1999-08-21 2003-05-27 Schott Glas Television tube having substantially linear edges

Also Published As

Publication number Publication date
JPH04229534A (en) 1992-08-19
CN1056601A (en) 1991-11-27
IT9020271A0 (en) 1990-05-11
DE9116705U1 (en) 1993-09-02
FR2662021B1 (en) 1993-12-10
CZ544U1 (en) 1993-08-25
GB2243945B (en) 1994-05-11
KR910020789A (en) 1991-12-20
CN1018968B (en) 1992-11-04
KR940010952B1 (en) 1994-11-19
PL164198B1 (en) 1994-06-30
GB9108839D0 (en) 1991-06-12
PL290205A1 (en) 1992-01-13
DE4114606A1 (en) 1991-11-21
CA2039822C (en) 2001-11-20
FR2662021A1 (en) 1991-11-15
GB2243945A (en) 1991-11-13
TR25115A (en) 1992-11-01
CS128391A2 (en) 1991-12-17
IT9020271A1 (en) 1991-11-11
JP2611885B2 (en) 1997-05-21
IT1239972B (en) 1993-11-27

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202