FR2446010A1 - Colour TV CRT with light absorbing parts on screen - has slotted shadow mask, with strips separating slot columns aligned with light absorbing parts - Google Patents

Colour TV CRT with light absorbing parts on screen - has slotted shadow mask, with strips separating slot columns aligned with light absorbing parts

Info

Publication number
FR2446010A1
FR2446010A1 FR7932093A FR7932093A FR2446010A1 FR 2446010 A1 FR2446010 A1 FR 2446010A1 FR 7932093 A FR7932093 A FR 7932093A FR 7932093 A FR7932093 A FR 7932093A FR 2446010 A1 FR2446010 A1 FR 2446010A1
Authority
FR
France
Prior art keywords
light absorbing
screen
absorbing parts
colour
shadow mask
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.)
Pending
Application number
FR7932093A
Other languages
French (fr)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2446010A1 publication Critical patent/FR2446010A1/en
Pending 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
    • H01J29/02—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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • H01J29/327—Black matrix materials
    • 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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • 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
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

The colour TV tube has a cathodoluminescent line screen and a shadow mask with slotted apertures. The slots are arranged in columns and separated by strips. The screen (32) has light absorbing regions as individual fields (54) located in alignment with the strips (52). The dimensions of the light absorbing regions, measured in a direction at right angles to the longitudinal extent of the slots (X-X), are identical to the width of three subsequent cathodoluminescent lines (42, 44, 46) of the screen in the same direction. The light absorbing regions may form together approximately 20% of the screen surface. In the screen production a photosensitive material on the tube front face is exposed through the mask as a photomatrix, the exposure light being emitted by two points. The straight connecting line of the points extends orthogonally to the longitudinal direction of the slots in the mask. The two points may be defined by the ends of a linear light source.
FR7932093A 1979-01-02 1979-12-31 Colour TV CRT with light absorbing parts on screen - has slotted shadow mask, with strips separating slot columns aligned with light absorbing parts Pending FR2446010A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91279A 1979-01-02 1979-01-02

Publications (1)

Publication Number Publication Date
FR2446010A1 true FR2446010A1 (en) 1980-08-01

Family

ID=21693538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7932093A Pending FR2446010A1 (en) 1979-01-02 1979-12-31 Colour TV CRT with light absorbing parts on screen - has slotted shadow mask, with strips separating slot columns aligned with light absorbing parts

Country Status (4)

Country Link
JP (1) JPS5593632A (en)
DE (1) DE3000039A1 (en)
FR (1) FR2446010A1 (en)
IT (1) IT1126560B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1467026A (en) * 1965-06-22 1967-01-27 fluorescent woven screen for cathode ray tubes color television receivers
DE2511074A1 (en) * 1974-03-13 1975-09-25 Matsushita Electronics Corp COLOR TUBE
DE2454520A1 (en) * 1974-05-22 1975-12-04 Gen Electric SCREEN FOR SLOTTED PERFORATED MASKS OF COLOR TELEVISION TUBES AND METHOD OF MANUFACTURING
DE2635106A1 (en) * 1975-10-01 1977-04-07 Hitachi Ltd METHOD OF MAKING A COLOR DISPLAY TUBE SCREEN
US4049451A (en) * 1972-01-14 1977-09-20 Rca Corporation Method for forming a color television picture tube screen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4896070A (en) * 1972-03-21 1973-12-08
JPS5438762A (en) * 1977-09-02 1979-03-23 Toshiba Corp Color picture tube
DE2915020A1 (en) * 1979-04-12 1980-10-16 Standard Elektrik Lorenz Ag COLORED PIPES WITH BLACK MATRIX AND METHOD FOR THEIR PRODUCTION

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1467026A (en) * 1965-06-22 1967-01-27 fluorescent woven screen for cathode ray tubes color television receivers
US4049451A (en) * 1972-01-14 1977-09-20 Rca Corporation Method for forming a color television picture tube screen
DE2511074A1 (en) * 1974-03-13 1975-09-25 Matsushita Electronics Corp COLOR TUBE
DE2454520A1 (en) * 1974-05-22 1975-12-04 Gen Electric SCREEN FOR SLOTTED PERFORATED MASKS OF COLOR TELEVISION TUBES AND METHOD OF MANUFACTURING
DE2635106A1 (en) * 1975-10-01 1977-04-07 Hitachi Ltd METHOD OF MAKING A COLOR DISPLAY TUBE SCREEN

Also Published As

Publication number Publication date
IT1126560B (en) 1986-05-21
IT7927985A0 (en) 1979-12-07
DE3000039A1 (en) 1980-07-03
JPS5593632A (en) 1980-07-16

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