GB1335653A - Exposure device for manufacturing a display screen of a colour display cathode ray tube - Google Patents

Exposure device for manufacturing a display screen of a colour display cathode ray tube

Info

Publication number
GB1335653A
GB1335653A GB2206372A GB2206372A GB1335653A GB 1335653 A GB1335653 A GB 1335653A GB 2206372 A GB2206372 A GB 2206372A GB 2206372 A GB2206372 A GB 2206372A GB 1335653 A GB1335653 A GB 1335653A
Authority
GB
United Kingdom
Prior art keywords
faceplate
source
lens
colour
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.)
Expired
Application number
GB2206372A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1335653A publication Critical patent/GB1335653A/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

Abstract

1335653 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 May 1972 [14 May 1971] 22063/72 Heading H1D An exposure device for manufacturing a display screen of a colour TV tube comprises a light source 6 for illuminating a photosensitive layer 3 on the tube faceplate 2 through a pattern of holes 4 in a shadow mask 5, and rotatable means 11 for producing a virtual displacement, seen from the mask, of the source parallel to a target plane at the faceplate centre. A point light source comprises a gas discharge tube 7 and a quartz cone 8. A lens 10 produces a virtual source coincident with the deflection point of the electron beam. The means 11 comprises a wedge shaped lens with slight curvature of surface 14 and its rotation produces an effective annular source. Dots produced on the faceplate are smaller than the holes in the mask and hence smaller than the impact area of the electron beams. This increases the area between the dots which may be of black light absorbing material. The lens 11 may be rotationally symmetrical about its axis or replaced by a plane sheet of glass rotated about an axis at an angle to its surface.
GB2206372A 1971-05-14 1972-05-11 Exposure device for manufacturing a display screen of a colour display cathode ray tube Expired GB1335653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7106619.A NL158650B (en) 1971-05-14 1971-05-14 METHOD AND DEVICE FOR THE MANUFACTURE OF A DISPLAY OF A COLOR TV DISPLAY TUBE.

Publications (1)

Publication Number Publication Date
GB1335653A true GB1335653A (en) 1973-10-31

Family

ID=19813153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2206372A Expired GB1335653A (en) 1971-05-14 1972-05-11 Exposure device for manufacturing a display screen of a colour display cathode ray tube

Country Status (8)

Country Link
US (1) US3810196A (en)
JP (1) JPS5544422B1 (en)
BE (1) BE783418A (en)
ES (1) ES402649A1 (en)
FR (1) FR2137895B1 (en)
GB (1) GB1335653A (en)
IT (1) IT959720B (en)
NL (1) NL158650B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226986B2 (en) * 1973-04-06 1977-07-18
DE2538087C2 (en) * 1975-08-27 1986-09-11 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method for producing the color triple dot grid of the screen of a color television tube
US4122461A (en) * 1977-07-11 1978-10-24 Gte Sylvania Incorporated Exposure apparatus and method for manufacturing a cathode ray tube display screen
JPH07272627A (en) * 1994-03-31 1995-10-20 Toshiba Corp Exposure device for forming phosphor screen of color cathode-ray tube
KR200155319Y1 (en) * 1995-09-25 1999-09-01 손욱 Exposuring device for manufacturing color crt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003874A (en) * 1956-10-26 1961-10-10 Zenith Radio Corp Optical correction in manufacture of color image reproducers
NL294994A (en) * 1962-07-06
US3736848A (en) * 1970-10-20 1973-06-05 Tokyo Shibaura Electric Co Method of preparing the screen of a colour television picture tube and device performing the method
NL7106346A (en) * 1971-05-08 1972-11-10

Also Published As

Publication number Publication date
BE783418A (en) 1972-11-13
ES402649A1 (en) 1975-03-16
FR2137895B1 (en) 1980-03-14
IT959720B (en) 1973-11-10
FR2137895A1 (en) 1972-12-29
US3810196A (en) 1974-05-07
DE2220959B2 (en) 1977-03-10
DE2220959A1 (en) 1972-11-30
NL158650B (en) 1978-11-15
JPS5544422B1 (en) 1980-11-12
NL7106619A (en) 1972-11-16

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Legal Events

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