JPH0250946U

JPH0250946U -

Info

Publication number: JPH0250946U
Application number: JP13060388U
Authority: JP
Priority date: 1988-10-05
Filing date: 1988-10-05
Publication date: 1990-04-10

Description

[Brief explanation of drawings]

第１図及び第２図は本考案によるキヤラクタ表
示管の一例の正面図、断面図、第３図Ａ〜Ｉはそ
の分解斜視図、第４図は従来の蛍光表示管の断面
図、第５図はその蛍光体セグメントのパターン図
である。１１は蛍光面、１２は電子ビーム制御機構、１
３はカソード、Ｇ_１〜Ｇ_３は第１〜第３グリツド
、１５，１５_１１〜１５_１８，１５_２１〜１５_２
８，１５_３１，１５_３２は電極セグメントである
。 1 and 2 are a front view and a sectional view of an example of a character display tube according to the present invention, FIGS. 3A to 3 are exploded perspective views thereof, FIG. 4 is a sectional view of a conventional fluorescent display tube, and FIG. The figure is a pattern diagram of the phosphor segments. 11 is a fluorescent screen, 12 is an electron beam control mechanism, 1
3 is a cathode, G ₁ to _{G 3} are first to third grids, 15, 15 ₁₁ to 15 ₁₈ , 15 ₂₁ to 15 _{2
8} , 15 ₃₁ and 15 ₃₂ are electrode segments.

補正平１．１．２３実用新案登録請求の範囲を次のように補正する
。Amendment 1.23.1.23 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】蛍光面と、該蛍光面と対向して配され、上記蛍
光面に対する電子ビームの衝撃を制御する電子ビ
ーム制御機構と、カソードとを有し、上記電子ビーム制御機構は、それぞれ平板状の
第１グリツドと第２グリツドと第３グリツドとを
有し、上記第２グリツドは、キヤラクタ表示を行
う電気的に独立したそれぞれメツシユ状電子ビー
ム透過部を有する電極セグメントを有して成り、上記第１グリツドに正の電圧を印加し、上記第
２グリツドの電極セグメントに選択的に正の所要
の電圧を印加して上記蛍光面の選択的位置に電子
ビームを衝撃させてキヤラクタ表示を行うように
したキヤラクタ表示管。[Claims for Utility Model Registration] A phosphor screen, an electron beam control mechanism disposed opposite to the phosphor screen to control the impact of an electron beam on the phosphor screen, and a cathode, the electron beam control mechanism has a first grid, a second grid, and a third grid each having a flat plate shape, and the second grid has electrode segments each having an electrically independent mesh-like electron beam transmitting portion for displaying a character. applying a positive voltage to the first grid and selectively applying a desired positive voltage to the electrode segments of the second grid to bombard selective locations of the phosphor screen with an electron beam; A character display tube designed to display characters.

Claims

[Claims for Utility Model Registration] A phosphor screen, an electron beam control mechanism disposed opposite to the phosphor screen to control the impact of an electron beam on the phosphor screen, and a cathode, the electron beam control mechanism has a first grid, a second grid, and a third grid each having a flat plate shape, and the second grid has electrode segments each having an electrically independent mesh-like electron beam transmitting portion for displaying a character. applying a fixed positive voltage to the first grid;
A character display tube, wherein a required positive voltage is selectively applied to the electrode segments of the second grid to cause electron beams to impact selective positions on the phosphor screen to perform character display.