JPS54143063A - Electron source for picture display - Google Patents

Electron source for picture display

Info

Publication number
JPS54143063A
JPS54143063A JP5181078A JP5181078A JPS54143063A JP S54143063 A JPS54143063 A JP S54143063A JP 5181078 A JP5181078 A JP 5181078A JP 5181078 A JP5181078 A JP 5181078A JP S54143063 A JPS54143063 A JP S54143063A
Authority
JP
Japan
Prior art keywords
cathode
electrode
electron
voltage
negative
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.)
Granted
Application number
JP5181078A
Other languages
Japanese (ja)
Other versions
JPS593822B2 (en
Inventor
Masanori Watanabe
Kinzo Nonomura
Yoshinobu Takesako
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5181078A priority Critical patent/JPS593822B2/en
Priority to US06/032,752 priority patent/US4227117A/en
Publication of JPS54143063A publication Critical patent/JPS54143063A/en
Priority to US06/433,023 priority patent/USRE31876E/en
Publication of JPS593822B2 publication Critical patent/JPS593822B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE: To obtain a uniform electron beam from the entire cathode by eliminating a potential difference across a linear hot cathode, arranged at the flank opening part of a back electrode, while no electron is derived from the cathode.
CONSTITUTION: Inside of cylinder back electron 2 in a channel or U shape, linear cathode 1 is arranged and on the opening side of electrode 2, leader electrode 3 with several through holes 4 and accelerating electrode 5 are both arranged. Here, electrode 2 is applied with a negative voltage, and electrode 3 with a positive voltage. Because of the application of the negative voltage to electrode 2, no electron is emitted even in case of heating cathode 1 by power supply V1, but when a negative pulse voltage is applied to cathode 1 by pulse- voltage generator 7, cathode 1 becomes negative to cause electron emission. At this time, diode 6 is connected to one terminal of cathode 1 with its direction opposite to the pulse voltage and, in consequence, the potential difference across cathode 1 becomes zero, so that the axial potential gradient will be zero. A uniform electron beam can therefore be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP5181078A 1978-04-28 1978-04-28 Electron source for image display Expired JPS593822B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP5181078A JPS593822B2 (en) 1978-04-28 1978-04-28 Electron source for image display
US06/032,752 US4227117A (en) 1978-04-28 1979-04-24 Picture display device
US06/433,023 USRE31876E (en) 1978-04-28 1982-10-05 Picture display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5181078A JPS593822B2 (en) 1978-04-28 1978-04-28 Electron source for image display

Publications (2)

Publication Number Publication Date
JPS54143063A true JPS54143063A (en) 1979-11-07
JPS593822B2 JPS593822B2 (en) 1984-01-26

Family

ID=12897261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5181078A Expired JPS593822B2 (en) 1978-04-28 1978-04-28 Electron source for image display

Country Status (1)

Country Link
JP (1) JPS593822B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146138A (en) * 1983-02-10 1984-08-21 Matsushita Electric Ind Co Ltd Driving method of electron source
JPS61124033A (en) * 1984-11-20 1986-06-11 Matsushita Electric Ind Co Ltd Electron gun of image display unit
JPS6229046A (en) * 1985-07-31 1987-02-07 Matsushita Electric Ind Co Ltd Plane image display device
JPS62249337A (en) * 1986-04-23 1987-10-30 Mitsubishi Electric Corp Cathode-ray display device
US5068579A (en) * 1989-05-19 1991-11-26 Matsushita Electric Industrial Co., Ltd. Flat configuration color crt display apparatus with scanning correction for component positioning error

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146138A (en) * 1983-02-10 1984-08-21 Matsushita Electric Ind Co Ltd Driving method of electron source
JPS61124033A (en) * 1984-11-20 1986-06-11 Matsushita Electric Ind Co Ltd Electron gun of image display unit
JPS6229046A (en) * 1985-07-31 1987-02-07 Matsushita Electric Ind Co Ltd Plane image display device
JPS62249337A (en) * 1986-04-23 1987-10-30 Mitsubishi Electric Corp Cathode-ray display device
US5068579A (en) * 1989-05-19 1991-11-26 Matsushita Electric Industrial Co., Ltd. Flat configuration color crt display apparatus with scanning correction for component positioning error

Also Published As

Publication number Publication date
JPS593822B2 (en) 1984-01-26

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