JPS5580252A - Fluorescent display tube - Google Patents

Fluorescent display tube

Info

Publication number
JPS5580252A
JPS5580252A JP15454978A JP15454978A JPS5580252A JP S5580252 A JPS5580252 A JP S5580252A JP 15454978 A JP15454978 A JP 15454978A JP 15454978 A JP15454978 A JP 15454978A JP S5580252 A JPS5580252 A JP S5580252A
Authority
JP
Japan
Prior art keywords
filament
face plate
anode
fluorescent
display tube
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
JP15454978A
Other languages
Japanese (ja)
Inventor
Akihiko Ishitani
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 JP15454978A priority Critical patent/JPS5580252A/en
Publication of JPS5580252A publication Critical patent/JPS5580252A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the depth effect of the distance between a face plate and a fluorescent screen by providing a fluorescent layer on the face plate.
CONSTITUTION: A positive potential is applied to a grid 7 and an anode by making a filament 8 discharge thermions by supplying electric current and heating the filament 8 after activating the same. The current flowing from the filament 8 to the anode excites a fluorescent substance 6. The fluorescence projects outside throuth a transparent electrode 5, a translucent electrode 3 and a face plate 2. The brightness is adjusted according to the purposes by controlling the anode current density.
COPYRIGHT: (C)1980,JPO&Japio
JP15454978A 1978-12-12 1978-12-12 Fluorescent display tube Pending JPS5580252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15454978A JPS5580252A (en) 1978-12-12 1978-12-12 Fluorescent display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15454978A JPS5580252A (en) 1978-12-12 1978-12-12 Fluorescent display tube

Publications (1)

Publication Number Publication Date
JPS5580252A true JPS5580252A (en) 1980-06-17

Family

ID=15586674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15454978A Pending JPS5580252A (en) 1978-12-12 1978-12-12 Fluorescent display tube

Country Status (1)

Country Link
JP (1) JPS5580252A (en)

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