JPS5465467A - Indirectly-heated cathode assembly - Google Patents

Indirectly-heated cathode assembly

Info

Publication number
JPS5465467A
JPS5465467A JP13264177A JP13264177A JPS5465467A JP S5465467 A JPS5465467 A JP S5465467A JP 13264177 A JP13264177 A JP 13264177A JP 13264177 A JP13264177 A JP 13264177A JP S5465467 A JPS5465467 A JP S5465467A
Authority
JP
Japan
Prior art keywords
pellet
area
heat
cap
grid electrode
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
JP13264177A
Other languages
Japanese (ja)
Inventor
Iwao Sato
Kinjiro Sano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13264177A priority Critical patent/JPS5465467A/en
Publication of JPS5465467A publication Critical patent/JPS5465467A/en
Pending legal-status Critical Current

Links

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE: To realize the quick heating, to enhance the emission life time property and to simplify the manufacturing process of the cathode assembly, by distributing fixedly the pellet coated with the electronic radiation material at the position corresponding to the heat electron radiation area on the cap.
CONSTITUTION: Pellet 10 is adhered fixedly through welding and other method at the area corresponding to the electron beam transmission hole of the grid electrode on cap 2. Electronic radiation material 3 is coated on the upper surface of pellet 10. Thus, indirectly-heated cathode assembly 4 is formed. Under the normal operating conditions of the cathode-ray tube, the heat electron radiation area of meterial 3 layer in assembly 4 is in nearly agreement with the maximum electron beam transmission hole of the grid electrode, and the heat electron radiated from the surface area of the material 3 layer other than the radiation area is controlled by the grid electrode and the acceleration electrode. Thus, the heat capacity including cap 2 and pellet 10 is reduced about 11% compared with the conventional amount, and the rise time until emergence of the picture image is reduced by 0.3 sec. with the life time increased more than double.
COPYRIGHT: (C)1979,JPO&Japio
JP13264177A 1977-11-04 1977-11-04 Indirectly-heated cathode assembly Pending JPS5465467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13264177A JPS5465467A (en) 1977-11-04 1977-11-04 Indirectly-heated cathode assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13264177A JPS5465467A (en) 1977-11-04 1977-11-04 Indirectly-heated cathode assembly

Publications (1)

Publication Number Publication Date
JPS5465467A true JPS5465467A (en) 1979-05-26

Family

ID=15086068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13264177A Pending JPS5465467A (en) 1977-11-04 1977-11-04 Indirectly-heated cathode assembly

Country Status (1)

Country Link
JP (1) JPS5465467A (en)

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