JPS57128435A - Manufacture of color cathode-ray tube - Google Patents

Manufacture of color cathode-ray tube

Info

Publication number
JPS57128435A
JPS57128435A JP20643081A JP20643081A JPS57128435A JP S57128435 A JPS57128435 A JP S57128435A JP 20643081 A JP20643081 A JP 20643081A JP 20643081 A JP20643081 A JP 20643081A JP S57128435 A JPS57128435 A JP S57128435A
Authority
JP
Japan
Prior art keywords
length
represented
light source
plate
slit
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
JP20643081A
Other languages
Japanese (ja)
Inventor
Seiji Shiraishi
Tsutomu Tomono
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP20643081A priority Critical patent/JPS57128435A/en
Publication of JPS57128435A publication Critical patent/JPS57128435A/en
Pending 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)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To prevent any width variation of stripe images, which might be caused when a continuous phosphor stripe is formed on the inner surface of a panel by use of both a slit-type shadow mask and a linear light source, by adjusting the length of the light source to a given value. CONSTITUTION:A shadow mask plate 1 is provided with a plural number of slits 2, and bridges 3 which are located between the slits 2. When the length of a light source 5 is represented by (l), the length of the slit 2 is represented by (b), the distance between the source 5 and the plate 1 is represented by (p), and the distance between the plate 1 and a panel 4 is represented by (q), the complete shadow length (Ps) and the half shadow length (Pl) of the image are represented by the equations, Ps=¦b-(l-b)q/p¦and Pl=b+(l+b)q/p. The length (l) of the light source 5 is determined so that the relation of Ps+Pl=2nh in satisfied when (h) represents the pitch of the slit 2 and (n) represents a positive integer. As a result, the influence of shadows caused due to the bridges 3 of the plate 1 can be extinguished, and stripe images of even width can be obtained.
JP20643081A 1981-12-21 1981-12-21 Manufacture of color cathode-ray tube Pending JPS57128435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20643081A JPS57128435A (en) 1981-12-21 1981-12-21 Manufacture of color cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20643081A JPS57128435A (en) 1981-12-21 1981-12-21 Manufacture of color cathode-ray tube

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP13946173A Division JPS5739011B2 (en) 1973-12-10 1973-12-10

Publications (1)

Publication Number Publication Date
JPS57128435A true JPS57128435A (en) 1982-08-10

Family

ID=16523242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20643081A Pending JPS57128435A (en) 1981-12-21 1981-12-21 Manufacture of color cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS57128435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758221A (en) * 1994-12-07 1998-05-26 Samsung Display Devices Co., Ltd. Apparatus for photolithographic exposure of cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758221A (en) * 1994-12-07 1998-05-26 Samsung Display Devices Co., Ltd. Apparatus for photolithographic exposure of cathode ray tube

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