經濟部中央標準局員工消費合作社印製 A7 -----------B7 五、發明説明（i ) 本發明與具有直線排列電子槍之—種改良式彩色映像管 有關特別與具有包括一分開聚焦電極之直線排列電子槍 之映像管有關。 對彩色映像管而言，其圖像解析度全靠在管之映幕上一 些小的電子束光點而定。在此種管内’電子槍產生三條電 子束:必須能同時聚焦於幕上之小光點。吾人已知使用管 頭上之線圈來提供掃描速度調變（svm)。一個線圈爲 有兩極之裝置，加以調節而產生垂直磁場，能引起電子 束之Jc平偏轉。此種線圈藉調節電子束之水平偏轉速度而 改善管之圖像品質。SVM線圈以視頻信號爲函數而被驅動 。随著視頻率之增加，例如從NTSC率增至vga& svga率 ，SVM線圈亦相應操作於較高之頻率。此等較高頻率會快 速改變磁場。依法拉第電感定律，在任何導體中磁流之改 變即會產生内部閉環電流通道。榜次定律亦言，感應源流 會產生與入射場改變相反之感應磁流，因而減少到達電子 束之磁場大小。此等電流之大小全視磁流改變率，亦即頻 率而疋。此一磁場減小則須有較高電力之電路或較高敏感 度之線圈，因而提高成本β 本發明係關於一種彩色映像管，具有一映幕及一置於管 頸内之電子搶用以產生三條直線式排列電子束，中間一條 兩邊各一條，並將電子束導至映幕。電子槍有多個電極，， 包括一聚焦電極《管頭上有—處承接一環繞之掃描速度調 變線圈。聚焦電極包括兩個分開之零件，相互電連接並連 接至同一聚焦電壓。兩零件間之空間爲管頸上線圈所在處 ~4一 本紙張尺度賴t國國家操準（CNS ) A4規格（2丨^^7公楚} (請先閱讀背面之注意事項再填寫本頁) 裝. .1Τ A7 B7 五、發明説明（ 包圍。此一空間提供—無渦流區，因而增大電子 磁場大小。 附圖中： 可見之 圖1爲本發明實例彩色映像管部分軸向斷面計劃圖。 圖2爲與sv__於管頸之圖m示電予槍部分轴向 斷面側圖。 圖3爲圖2中電子槍之線路圖，顯示電子槍各電極之電 接 連 圖。 圖4爲圖2電子槍内與G5T電極相對之g5b電接側 方之正面 ---- ---—' 抑衣 I - I /.H· (請先聞讀背面之注意事項再填寫本頁) 圖5爲另-電子搶内與G5T電極相對之⑽電極側方之正 面圖。 圖1所示爲一矩形彩色映像管10，具有—破璃罩u含有一 矩形面板12與-管狀頸14由—矩形漏斗15加以連接。漏斗 15有一内部導電塗層（未示出）從一陽極鈕16伸至頸14。面 板12有一觀視屏板18及一側壁2〇以玻璃料17密封於漏斗u 中。屏板18之内表面載有一三色螢屏螢屏22最好爲具 有安排成三元群磷光線之線屏，每一三元群均包括三色中 每一色之磷光線各一。螢屏亦可爲點屏。一個有多個小孔 之選色電極，亦稱爲孔板24以傳統方法活動安裝於距螢屏 22—預定間隔之處。電子槍26,如圖〗虛線所示，裝於頸^ 之中心用以產生電子束並將之沿會聚通路徑孔板24導至螢 屏22 〇 圖1所示管之設计係與附於管之漏斗至頸接合處附近之— *5- 本纸張尺度適用中國國家標準（CNS ) A4規格（2丨0X297公楚） 訂 經濟部中央標準局員工消費合作社印掣 經濟部中央標準局員工消費合作社印製 A 7 B7 五、發明説明（3 ) - 外部磁偏轉輊（未示出）連用。當活化後，輛使三條電子束 產生磁場而在螢屏22上之矩形掃描面内作垂直與水平掃描。 電子槍26之詳細顯示於圖2、3、4中。電子槍26包括三個 隔開直線排列之陰極34(僅顯示出一個）、一個控制柵電極 36(G1)、一個簾柵電極38(〇2)、一個加速電極40设3)、一個 板形電極42(G4)、一個聚焦電極（G5)分爲兩部分44(G5B)與 46(G5T)及一個最終電極48(G6)，均按照上述次序排列。G1 至G6各電極中之每一個均有小孔可通過三條電子束。電子 槍26中之靜電式聚焦透鏡係由G5T電極46與G6電極48之相 對部分所形成。G5B電極44與G5T電極均有片，分別爲44B 、44T與46B、46T 0 電子槍26之全部電極係直接或間接連接至兩個絕緣支柱 50與52。支柱最好爲加熱玻璃而在於電極之鉗狀物上，使 鉗狀物嵌於柱内。 圖2中所示管頸14上有兩個掃描調變線圈54與56。每個線 圈略呈矩形而其外部輪廓則與頸之筒狀相一致。每個線圈 亦各有一大型窗口位於頸之頂部與底部相互面對。雖然此 種掃描調變線圈E被用於具有固定聚焦電壓電子槍之管上 ，但本發明之發明人發現在電子槍中加入一額外之空間45 使得掃描調變場可不受阻擋而作用於電子束上即可使管上 掃描調變線圈之效力增加。空間45可使掃描調變線圈產生 之快速變化通量不會有電極内所產生渦流造成之損失而到 達電子束。額外空間45之形成是將G5聚焦電極縱向分爲兩 個部分，即G5B電極部分44與G5T電極部分46。線圈應圍繞 -6- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） --------- |奸^-.--- - I 丁_____I I (請先閱讀背面之注意事項再填寫本頁) A7 B7 SSSCMIil 五、發明説明（4 ) 兩個部分44與46間之空間，但此一空間最好靠近線圈縱向 中心而非末端，如圖2所示。 (請先閱讀背面之注意事項再填寫本頁) 圖3所示爲電子槍26各電極之電連接。G1電極通地。G2 與G4互連再連接至電壓Ve2、G3、G5B及G5T均互相連接再 連接至固定聚焦電壓VF()eus，G6則連接至陽極電壓VANQDE。 在電子槍26中，兩個電極部分44與46之面對部分44T與 46B各有一加長之小孔47，如圖4之44T部分所示。兩個電 極部分44與46‘遠隔部分44B與46T各有三個小孔，即60、 62與64，用於通過三個電子束，如圖4之44T部分所示。圖5 爲44T與46B部分之另一實例，分別在原來各元件之標號上 加一撇。此一實例顯示電極部分44與46全部小孔之形狀與 大小如何改變而取得特定之性能位準。在圖5所示實例部分 中，44T'部分中有一加長之孔47·而在44B'部分中有三個加 大之孔60'、62'與64·。 下表所示爲電子槍26之一組電極間隔： 經濟部中央標準局員工消費合作社印製 表1 :0.003" (0.076mm): =0.009" (0.229mm) =0.030" (0.762mm) =0.050" (1.270mm) =0.050" (1.270mm) =0.070" (1.778mm) =0.050" (1.270mm) 陰極與G1間之間隔 G1與G2間之間隔 G2與G3間之間隔 G3與G4間之間隔 G4與G5B間之間隔 G5B與G5T間之間隔 G5T與G6間之間隔 *在操作溫度上。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公f )Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 ----------- B7 V. Description of the Invention (i) The present invention relates to an improved color image tube with a linear electron gun. The image tube of a linearly arranged electron gun separated by focusing electrodes is related. For a color image tube, its image resolution depends on a few small beam spots on the screen of the tube. In this kind of tube, the electron gun generates three electron beams: they must be able to focus on small light spots on the screen at the same time. We are known to use a coil on the tube head to provide scan speed modulation (svm). A coil is a two-pole device that is adjusted to generate a vertical magnetic field that can cause the Jc flat deflection of the electron beam. This coil improves the image quality of the tube by adjusting the horizontal deflection speed of the electron beam. The SVM coil is driven as a function of the video signal. As the video rate increases, for example from NTSC rate to vga & svga rate, the SVM coil also operates at higher frequencies accordingly. These higher frequencies can quickly change the magnetic field. According to Faraday's law of inductance, a change in magnetic current in any conductor creates an internal closed-loop current path. The Law of Ranking also states that inductive source currents generate inductive magnetic currents that are opposite to changes in the incident field, thereby reducing the size of the magnetic field reaching the electron beam. The magnitude of these currents depends on the rate of change of the magnetic current, that is, the frequency. The reduction of this magnetic field requires a higher power circuit or a higher sensitivity coil, thus increasing the cost. The present invention relates to a color image tube, which has a projection screen and an electronic grabber placed in the neck of the tube. Generate three linearly arranged electron beams, one on each side of the middle, and direct the electron beams to the screen. The electron gun has a plurality of electrodes, including a focusing electrode. The tube head has a scanning speed adjusting coil around it. The focusing electrode includes two separate parts, which are electrically connected to each other and to the same focusing voltage. The space between the two parts is where the coil on the neck is located ~ 4 a paper size is based on the national standard (CNS) A4 specification (2 丨 ^^ 7 公 楚) (Please read the precautions on the back before filling this page ) Installation .1T A7 B7 V. Description of the invention (Surrounded. This space provides-no eddy current area, thus increasing the size of the electronic magnetic field. In the drawings: Visible Figure 1 is a partial axial section of the color image tube of the example of the present invention Plan diagram. Figure 2 is a side view of the axial section of the electric gun shown in Figure m and sv__ at the neck of the tube. Figure 3 is a circuit diagram of the electron gun in Figure 2, showing the electrical connection diagram of the electrodes of the electron gun. Figure 4 is Figure 2 The front side of the g5b electrical connection side of the electron gun opposite to the G5T electrode ---- --- '' Yi Yi I-I /.H· (Please read the precautions on the back before filling this page) Figure 5 This is another front view of the side of the ⑽ electrode opposite to the G5T electrode in the electronic grab. Figure 1 shows a rectangular color image tube 10 with a broken glass cover u containing a rectangular panel 12 and a tubular neck 14 by a rectangular shape. The funnel 15 is connected. The funnel 15 has an internal conductive coating (not shown) extending from an anode button 16 to the neck 14. The panel 12 has a view The video screen 18 and a side wall 20 are sealed in the funnel u with glass frit 17. The inner surface of the screen 18 carries a three-color screen. The screen 22 is preferably a line screen with phosphorous rays arranged in a ternary group. Each ternary group includes one of each of the three colors of phosphorous light. The screen can also be a dot screen. A color-selective electrode with multiple small holes, also known as an orifice plate 24, is installed in a conventional manner at a distance. Screen 22—predetermined interval. Electron gun 26, as shown by the dotted line in the figure, is installed in the center of the neck ^ to generate an electron beam and guide it to the screen 22 along the convergence path path 24. Figure 1 The design of the tube is near the junction of the funnel to the neck of the tube — * 5- This paper size applies to the Chinese National Standard (CNS) A4 specification (2 丨 0X297 Gongchu) Ordered by the Central Standards Bureau of the Ministry of Economic Affairs Consumer Cooperatives Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China. A 7 B7 V. Description of the Invention (3)-External magnetic deflection 轾 (not shown) used in combination. When activated, the vehicle causes three electron beams to generate a magnetic field on the screen 22 The vertical and horizontal scanning is performed in the rectangular scanning plane. The detailed display of the electron gun 26 is shown in FIG. 2 In 3 and 4, the electron gun 26 includes three cathodes 34 (only one shown), a control grid electrode 36 (G1), a curtain grid electrode 38 (〇2), and an acceleration electrode 40 (3). A plate electrode 42 (G4), a focusing electrode (G5) is divided into two parts 44 (G5B) and 46 (G5T), and a final electrode 48 (G6), which are arranged in the above order. Among the electrodes G1 to G6 Each of them has small holes through which three electron beams can pass. The electrostatic focusing lens in the electron gun 26 is formed by the opposing portions of the G5T electrode 46 and the G6 electrode 48. The G5B electrode 44 and the G5T electrode each have a piece, and all electrodes of the 44B, 44T, 46B, and 46T 0 electron guns 26 are directly or indirectly connected to the two insulating pillars 50 and 52. The pillars are preferably heated glass and rest on the clamps of the electrodes so that the clamps are embedded in the pillars. There are two scanning modulation coils 54 and 56 on the neck 14 shown in FIG. Each coil is slightly rectangular and its outer contour follows the neck shape. Each coil also has a large window facing the top and bottom of the neck. Although this scanning modulation coil E is used for a tube with a fixed focus voltage electron gun, the inventor of the present invention has found that adding an extra space 45 to the electron gun allows the scanning modulation field to act on the electron beam without obstruction. The effect of scanning the modulation coil on the tube can be increased. The space 45 allows the rapidly changing flux generated by the scanning modulation coil to reach the electron beam without the loss caused by the eddy current generated in the electrode. The extra space 45 is formed by longitudinally dividing the G5 focusing electrode into two parts, namely, a G5B electrode part 44 and a G5T electrode part 46. The coil should be around -6- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) --------- | ^^ -.----I 丁 _____I I (Please first Read the notes on the back and fill in this page) A7 B7 SSSCMIil V. Description of the invention (4) The space between the two parts 44 and 46, but this space is best near the longitudinal center of the coil rather than the end, as shown in Figure 2. (Please read the precautions on the back before filling out this page) Figure 3 shows the electrical connection of the electrodes of the electron gun 26. G1 electrode is connected to ground. G2 and G4 are interconnected and then connected to the voltage Ve2, G3, G5B and G5T are all connected to each other and then to the fixed focus voltage VF () eus, and G6 is connected to the anode voltage VANQDE. In the electron gun 26, the facing portions 44T and 46B of the two electrode portions 44 and 46 each have an elongated hole 47, as shown in the 44T portion of FIG. The two electrode portions 44 and 46'are separated by three small holes 44B and 46T, that is, 60, 62 and 64, for passing three electron beams, as shown in the 44T portion of FIG. Fig. 5 shows another example of parts 44T and 46B, with a prime added to the reference numerals of the original components. This example shows how the shape and size of all of the small holes in the electrode portions 44 and 46 change to achieve a specific performance level. In the example section shown in Fig. 5, there is an elongated hole 47 · in the 44T 'section and three enlarged holes 60', 62 'and 64 · in the 44B' section. The following table shows the electrode spacing of one group of the electron gun 26: Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Table 1: 0.003 " (0.076mm): = 0.009 " (0.229mm) = 0.030 " (0.762mm) = 0.050 " (1.270mm) = 0.050 " (1.270mm) = 0.070 " (1.778mm) = 0.050 " (1.270mm) Space between cathode and G1 Space between G1 and G2 Space between G2 and G3 Interval between G3 and G4 Interval between G4 and G5B Interval between G5B and G5T Interval between G5T and G6 * at operating temperature. This paper size applies to China National Standard (CNS) A4 specification (210X297 male f)