JPS6094761U

JPS6094761U - color picture tube

Info

Publication number: JPS6094761U
Application number: JP18688083U
Authority: JP
Inventors: 木場　弘幸; 治男加藤
Original assignee: 株式会社東芝
Priority date: 1983-12-05
Filing date: 1983-12-05
Publication date: 1985-06-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のカラー受像管を垂直軸に沿って切断して
見た断面図、第２図は第１図の内部磁気遮蔽体の斜視図
、第３図乃至第７図は第２図の内部磁気遮蔽体によるラ
ンディングの異方性の説明図であり、第３図は偏向角の
小さいカラー受像管における電子ビームの左−ずれ現象
を示す説明図１、第４図は偏向角の大きいカラー受像管
における電子ビームの左右ずれ現象を示す説明図、第５
図は螢光体スクリーンや各部における磁束密度分力と電
流密度分力を示す説明図、第６図は開口部付近の磁界成
分を示す説明図、第７図はセンタ一部を零補正した時の
電子ビームの左右ずれ現象を示す説明図、第８図乃至第
１１図は本考案のカラー受像管の一実施例を示す図であ
り、第８図は垂直軸に沿って切断して見た断面図、第９
図は内部磁気遮蔽体の斜視図、第１０図ａは内部磁気遮
蔽体の電子銃側から見た平面図、第１０図すは第１０図
ａを垂直軸に槍って切断して見た断面図、第１１図は第
１０図すの開口部付近の磁界成分を脱す説明図である。。１・・・・・・パネル、３・・・・・・螢光体スクリー
ン、４・・・・・・シャドウマスク、６，１６・・・・
・・内部磁気遮蔽体、７，１７・・・・・・開口部、８
，１８□、１８２・・・・・・端部、１９□、１９□・
・・・・・鍔部。Fig. 1 is a cross-sectional view of a conventional color picture tube taken along the vertical axis, Fig. 2 is a perspective view of the internal magnetic shield of Fig. 1, and Figs. 3 to 7 are Fig. 2. Fig. 3 is an explanatory diagram of the anisotropy of landing due to the internal magnetic shield of Explanatory diagram showing the left-right shift phenomenon of electron beams in a color picture tube, No. 5
The figure is an explanatory diagram showing the magnetic flux density component and current density component in the fluorescent screen and various parts, Figure 6 is an explanatory diagram showing the magnetic field component near the opening, and Figure 7 is when a part of the center is zero-corrected. FIGS. 8 to 11 are diagrams showing an embodiment of the color picture tube of the present invention, and FIG. Cross section, No. 9
The figure is a perspective view of the internal magnetic shield, Figure 10a is a plan view of the internal magnetic shield seen from the electron gun side, and Figure 10 is a cross-section of Figure 10a taken along the vertical axis. The cross-sectional view, FIG. 11, is an explanatory view showing how the magnetic field component near the opening shown in FIG. 10 is removed. . 1... Panel, 3... Fluorescent screen, 4... Shadow mask, 6, 16...
... Internal magnetic shield, 7, 17 ... Opening, 8
, 18□, 182... end, 19□, 19□・
...Tsubabe.

Claims

[Scope of utility model registration request]

A panel having a phosphor screen adhered to its inner surface, in which a phosphor screen in which striped phosphor layers along a vertical axis are regularly arranged in parallel in a horizontal axis direction, and a shadow provided opposite to the phosphor screen. a mask; an electron gun attached to a neck portion of a funnel sealed to the panel; and an electron gun extending from a peripheral edge of the shadow ram toward the electron gun substantially along an inner wall of the funnel. In a color picture tube comprising at least an internal magnetic shield in the shape of a square truncated pyramid, a tube axis is provided at opposite ends along the horizontal axis of an opening on the electron gun side of the internal magnetic shield. In contrast, a flange part is provided that moves away toward the funnel, and the width of the flange part along the tube axis gradually increases from a part of the corner toward the vertical axis. tube.