GB1267000A - - Google Patents

Info

Publication number
GB1267000A
GB1267000A GB1267000DA GB1267000A GB 1267000 A GB1267000 A GB 1267000A GB 1267000D A GB1267000D A GB 1267000DA GB 1267000 A GB1267000 A GB 1267000A
Authority
GB
United Kingdom
Prior art keywords
diameter
dot
oct
aperture
larger
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.)
Expired
Application number
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 filed Critical
Publication of GB1267000A publication Critical patent/GB1267000A/en
Expired 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
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H01J9/2274—Light sources particularly adapted therefor

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)

Abstract

1,267,000. Luminescent screens. MATSUSHITA ELECTRONICS CORP. 23 Oct., 1970 [30 Oct., 1969], No. 50515/70. Heading HID. In the manufacture of a multi-dot colour screen by a photoresist process, the light source is annular. In Fig. 4 the light source is a transparent rod 11 illuminated at its lower end by an ultra-violet lamp (not shown) and provided at its top end with a non-emissive conical depression 11<SP>1</SP> surrounded by a circular rim 12. As illustrated, the light from the rim 12 passing through an aperture 7 in a shadow mask on to the emulsion 9 has a maximum intensity in a central area 14 which is separated from the penumbra 14<SP>1</SP> by a sharp boundary 14<SP>11</SP>; consequently the penumbral regions 14<SP>1</SP> can be dissolved away to leave well-defined circular dot portions of smaller diameter than the apertures 7. The dot diameter is smaller the larger the diameter of the source 12, which may be larger than the diameter of the aperture 7.
GB1267000D 1969-10-30 1970-10-23 Expired GB1267000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8736269 1969-10-30

Publications (1)

Publication Number Publication Date
GB1267000A true GB1267000A (en) 1972-03-15

Family

ID=13912761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1267000D Expired GB1267000A (en) 1969-10-30 1970-10-23

Country Status (5)

Country Link
US (1) US3764366A (en)
CA (1) CA923352A (en)
DE (1) DE2053422B2 (en)
FR (1) FR2066749A5 (en)
GB (1) GB1267000A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993487A (en) * 1969-01-03 1976-11-23 Matsushita Electronics Corporation Method for manufacture of color television picture tubes using rotating light source
US4013467A (en) * 1971-06-18 1977-03-22 Matsushita Electronics Corporation Method of manufacturing color picture tubes using rotating light attenuator
BE793999A (en) * 1972-01-14 1973-05-02 Rca Corp METHOD OF MANUFACTURING MASK-TYPE IMAGE TUBES FOR COLOR TELEVISION
JPS4882769A (en) * 1972-02-07 1973-11-05
DE2239853C3 (en) * 1972-08-12 1978-06-22 Reitter & Schefenacker Kg, 7300 Esslingen Holding device for exterior rearview mirrors of motor vehicles or the like
JPS5132271A (en) * 1974-09-13 1976-03-18 Hitachi Ltd Heimenhyojipaneru no keikotai no fuchakuhoho
US4223083A (en) * 1977-12-27 1980-09-16 Tektronix, Inc. Virtual mask exposure system for CRT screen manufacture

Also Published As

Publication number Publication date
CA923352A (en) 1973-03-27
FR2066749A5 (en) 1971-08-06
DE2053422B2 (en) 1973-08-30
US3764366A (en) 1973-10-09
DE2053422A1 (en) 1971-05-06

Similar Documents

Publication Publication Date Title
GB1267000A (en)
GB1372805A (en) Method for forming a cathode-ray tube screen
GB1065149A (en) Improvements in or relating to the production of screens for colour cathode ray tubes
GB1273459A (en) Method and apparatus for making colour cathode-ray tube
GB1228642A (en)
GB1302020A (en)
US3039515A (en) Fabrication of semiconductor devices
JPS57132641A (en) Shadow mask
SE325848B (en)
JPS5790850A (en) Color cathode ray tube
JPS5399760A (en) Color picture tube
JPS528768A (en) Color cathode ray tube
GB1379443A (en) Lamps
JPS5212563A (en) Prduction method of luorescent screen of color t.v. set
DE695859C (en) lamp
JPS5219187A (en) Fluorescent face of a cathode ray tube for displaying
GB1221843A (en) Method of and apparatus for obtaining a subjective color display
JPS5564359A (en) Fluorescent lamp
JPS5715337A (en) Fluorescent face burning method for color cathode ray tube
JPS5580251A (en) Fluorescent display device
JPS55137660A (en) Fluorescent lamp
JPS53104154A (en) Exposing method of fluorescent screen for color braun tube
JPS528993A (en) Fluorescent substance
JPS534464A (en) Fluorescent surface exposure for color receiving tube
KR960012208A (en) Shadow mask

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee