JPS5661746A - Shadow mask type color cathode-ray tube - Google Patents

Shadow mask type color cathode-ray tube

Info

Publication number
JPS5661746A
JPS5661746A JP13685979A JP13685979A JPS5661746A JP S5661746 A JPS5661746 A JP S5661746A JP 13685979 A JP13685979 A JP 13685979A JP 13685979 A JP13685979 A JP 13685979A JP S5661746 A JPS5661746 A JP S5661746A
Authority
JP
Japan
Prior art keywords
shadow mask
curvature
ray tube
color cathode
type color
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
JP13685979A
Other languages
Japanese (ja)
Inventor
Takeshi Watanabe
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 JP13685979A priority Critical patent/JPS5661746A/en
Publication of JPS5661746A publication Critical patent/JPS5661746A/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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0722—Frame

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To achieve a rectangular panel by forming tapered wall sections at each corner of a frame thereby reducing the curvature at the part fitting with a shadow mask. CONSTITUTION:A side wall 14 is provided at the circumference of the central part 13 of a shadow mask 12. The circumferential curvature R3 at each corners 12a- 12b of a shadow mask shaped approximately rectangular is made small enough to make the panel 1 rectangular. While each corner 15a-15d of a frame 15, is connected with a curvature face taperingly with continuously varied curvatures R4 and R5, and the curvature R5 at the part to be fitted with the shadow mask 12 is made smaller.
JP13685979A 1979-10-23 1979-10-23 Shadow mask type color cathode-ray tube Pending JPS5661746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13685979A JPS5661746A (en) 1979-10-23 1979-10-23 Shadow mask type color cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13685979A JPS5661746A (en) 1979-10-23 1979-10-23 Shadow mask type color cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS5661746A true JPS5661746A (en) 1981-05-27

Family

ID=15185175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13685979A Pending JPS5661746A (en) 1979-10-23 1979-10-23 Shadow mask type color cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS5661746A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424607U (en) * 1977-07-22 1979-02-17
JPS5426871A (en) * 1977-08-01 1979-02-28 Sumitomo Bakelite Co Ltd Separation and recovery of components of composite material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424607U (en) * 1977-07-22 1979-02-17
JPS5426871A (en) * 1977-08-01 1979-02-28 Sumitomo Bakelite Co Ltd Separation and recovery of components of composite material

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