JPS6412449A - Cathode-ray tube - Google Patents

Cathode-ray tube

Info

Publication number
JPS6412449A
JPS6412449A JP16733787A JP16733787A JPS6412449A JP S6412449 A JPS6412449 A JP S6412449A JP 16733787 A JP16733787 A JP 16733787A JP 16733787 A JP16733787 A JP 16733787A JP S6412449 A JPS6412449 A JP S6412449A
Authority
JP
Japan
Prior art keywords
neck
film
electrons
internal surface
charge
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
JP16733787A
Other languages
Japanese (ja)
Inventor
Masao Ecchu
Wataru Imanishi
Haruhisa Fujii
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 JP16733787A priority Critical patent/JPS6412449A/en
Publication of JPS6412449A publication Critical patent/JPS6412449A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To aim at improvement of the withstand voltage characteristics through increasing the charge up suppressing effect by providing an insulating film, which has the surface resistivity within a specific range and the secondary electron emission ratio of a value less than 1, on the internal surface of a neck in the fannel section. CONSTITUTION:On the internal surface of a neck 3 is provided a Cr2O3 film 7, in which the film thickness is regulated so that the surface resistivity is 10<12>-10<14>OMEGA/opening, and the secondary electron emission ratio is less than 1. Thereby, the secondary electrons are not emitted in the number of electrons more than that of electrons which are produced by the field emission and the like from each of the electrodes 1a-1f of an electron gun 1 and made incident upon the film 7, and it is prevented that the tube wall of the neck 3 becomes positively charged. In addition, even if the internal surface of the neck 3 becomes negatively charged, the negative charge up can also be prevented in such a way as causing a negative electric charge to flow by means of the surface resistance into an internal conductive film 4. Accordingly, the withstand voltage characteristics can be improved.
JP16733787A 1987-07-03 1987-07-03 Cathode-ray tube Pending JPS6412449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16733787A JPS6412449A (en) 1987-07-03 1987-07-03 Cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16733787A JPS6412449A (en) 1987-07-03 1987-07-03 Cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS6412449A true JPS6412449A (en) 1989-01-17

Family

ID=15847863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16733787A Pending JPS6412449A (en) 1987-07-03 1987-07-03 Cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS6412449A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952777A (en) * 1996-10-31 1999-09-14 Kabushiki Kaisha Toshiba Color cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952777A (en) * 1996-10-31 1999-09-14 Kabushiki Kaisha Toshiba Color cathode ray tube

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