JPH0251390U - - Google Patents
Info
- Publication number
- JPH0251390U JPH0251390U JP12876788U JP12876788U JPH0251390U JP H0251390 U JPH0251390 U JP H0251390U JP 12876788 U JP12876788 U JP 12876788U JP 12876788 U JP12876788 U JP 12876788U JP H0251390 U JPH0251390 U JP H0251390U
- Authority
- JP
- Japan
- Prior art keywords
- filament
- auxiliary electrode
- electrode
- potential
- 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
Links
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図はこの考案の一実施例による蛍光表示管
駆動回路を示す回路図、第２図はこの考案の蛍光
表示管駆動回路における昇圧回路の具体例を示す
回路図、第３図はこの考案におけるフイラメント
―補助電極間の電圧を示す波形図、第４図および
第５図はこの考案における昇圧回路の具体例を示
す回路図、第６図は従来の蛍光表示管駆動回路を
示す回路図、第７図は蛍光表示管の概略構成を示
す断面図、第８図は補助電極電圧の高、低の各場
合における蛍光表示管内の電位相関図、第９図は
従来の蛍光表示管における補助電極電圧、フイラ
メント電圧およびフイラメント―補助電極間電圧
を、表示品位（表示むら）との関係で示す波形図
である。
１……蛍光表示管、７……フイラメント、９…
…表示電極、１０……補助電極、１５……昇圧回
路。なお、図中、同一符号は同一、または相当部
分を示す。
FIG. 1 is a circuit diagram showing a fluorescent display tube drive circuit according to an embodiment of this invention, FIG. 2 is a circuit diagram showing a specific example of a booster circuit in the fluorescent display tube drive circuit of this invention, and FIG. 4 and 5 are circuit diagrams showing a specific example of the booster circuit in this invention, and FIG. 6 is a circuit diagram showing a conventional fluorescent display tube drive circuit. Figure 7 is a cross-sectional view showing the schematic structure of a fluorescent display tube, Figure 8 is a potential relationship diagram within the fluorescent display tube when the auxiliary electrode voltage is high and low, and Figure 9 is the auxiliary electrode in a conventional fluorescent display tube. FIG. 3 is a waveform diagram showing voltage, filament voltage, and filament-auxiliary electrode voltage in relation to display quality (display unevenness). 1... Fluorescent display tube, 7... Filament, 9...
...display electrode, 10...auxiliary electrode, 15...boost circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
される熱電子を吸収する表示電極９と、上記フイ
ラメント７および表示電極９間の等電位線を安定
化する補助電極１０とを備えた蛍光表示管の駆動
回路において、上記フイラメント７と補助電極１
０との間に、該補助電極１０の電位を上記フイラ
メント７の電位より高める昇圧回路１５を介装し
たことを特徴とする蛍光表示管駆動回路。 A drive circuit for a fluorescent display tube comprising a filament 7, a display electrode 9 that absorbs thermoelectrons emitted from the filament 7, and an auxiliary electrode 10 that stabilizes equipotential lines between the filament 7 and the display electrode 9. , the filament 7 and the auxiliary electrode 1
0, a booster circuit 15 for raising the potential of the auxiliary electrode 10 higher than the potential of the filament 7 is interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12876788U JPH0251390U (en) | 1988-10-03 | 1988-10-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12876788U JPH0251390U (en) | 1988-10-03 | 1988-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251390U true JPH0251390U (en) | 1990-04-11 |
Family
ID=31382414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12876788U Pending JPH0251390U (en) | 1988-10-03 | 1988-10-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251390U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62226191A (en) * | 1986-03-26 | 1987-10-05 | 株式会社デンソー | Fluorescent indicator tube driver |
-
1988
- 1988-10-03 JP JP12876788U patent/JPH0251390U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62226191A (en) * | 1986-03-26 | 1987-10-05 | 株式会社デンソー | Fluorescent indicator tube driver |
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