經濟部中央標準局員工消費合作社印製 • A6 ___B6_ 五、發明説明（ ） <發明之费景> 本發明是有關一種彩色陰極射線管之電子槍，此電子 槍附著在陰極射線的頸部用以發射電子束，更具體的説， 本發明是有關一用於彩色陰極射線管之電子槍，其中的像 散性和由於偏向軛偏向電子束所造成的聚焦問題能得到校 正，而使形成在整個蜜光上的電子束點都能均句的分佈。 一般而言，一彩色陰極射線管的解析度端賴打到整個 螢幕上的電子束點之直徑與形狀。為得到一高解析度的影 像，（P打到螢幕上的電子束點應盡可能小，（2)應盡可能 使電子束點的失真少，（3)應沒有光環産生，這幾點是很 重要的。然而，在一般的彩色陰極射線管中，因電子槍（ 發射出三個電子束）位於同一排2利用外加一偏向軛産生 平行方向的偏向磁場（就是所謂的枕形失真Di整磁場）和 垂直方向的偏向磁場（就是所諝的桶形失真調整磁場）， .............. 來達成自我聚焦的方式。如第1圖所示，打到營光幕100 周圍的電子束點101, 士一高亮度中心部分102和一低売度 霧狀部103,而這都是因偏向輕的不均勻磁場所造成的。 由於球面像差和電子槍的像散性和電子束垂直與水平焦聚 長度之不同，所造成的非均句電子束點101外形’是不認 為可形成一高品質的影像。 第2圖所示，為一傳統的彩色陰極射線管之電子槍， 被設計用來解決此一問題。 參考第2圔，一陰極2, —控制電極3和一螢幕電極 4三者構成三極真空管，一聚焦電極5,—動態聚焦電極 ~3~ 本紙張尺度適用t i國家標i(CNS)甲4規格1210x297公釐) ..............................................................-......................^—..................、訂.....................線 {橡先閲讀背面之注意事項再填寫本頁) A6 B6 五、發明説明（ ） 6和一尾端力卩速電極7 ,連續排列在傳統彩色陰極射線管 之電子槍中而形成一輔助電子透鏡和一主要電子透鏡。垂 直延長的電子束和平行延長的電子束分別通過在聚焦電極 5和動態聚焦電極6兩値相對的面上所形成的孔5H和孔6H 。一聚焦電壓Vf和一陽極電壓Va分別施於聚焦電極5和尾 端加速電極7上。一動態聚焦電壓Vfd (以聚焦電壓當作 一參考電壓，同時與偏向信號同步）施力卩於動態聚焦電極 6上。 經濟部中央標準局員工消費合作社印製 {請先閲讀背面之注意事項再填窝本頁) 裝 線 在傳統的彩色陰極射線管之電子槍1的構造中，當一 電子束投射到營光幕中央時，因施加在動態聚焦電極6上 的電壓與聚焦電壓Vf相同，四極電子透鏡就不會在聚焦電 極5和動態聚焦電極6之間形成。這從陰極2所射出的電 子束被在動態聚焦電極6和尾端加速電極7.之間所形成的 主要電子透鏡聚焦並加速，使得當這電子束投射至螢光幕 中心時，形成一圓形電子束。當電子束從陰極2投射至螢 光幕的周圍時，因動態聚焦電壓Vfd(與偏向信號同步並以 聚焦電壓Vf做為參考電壓）施加於動態聚焦電極6上，一 四極電子透鏡形成在聚焦電極5和動態聚焦電極6之間， 而此四極電子透鏡是藉由位於在兩電極相對面上之垂直方 向延長的電子束通過孔5H和平行方向延長的電子束通過孔 6H所形成的。通過四極電子透鏡，從陰極2所發射出的電 子束，接收到一強大的平行方向聚焦力和一強大的垂直方 向散焦力，這使得電子束的剖面在垂直方向延長。當垂直 方向延長的電子束被偏向至螢光幕的周圍時，由於受到偏 -4- 本紙張尺度通用中國國家標準（CNS)甲4規格（210 X 297公釐） 經濟部中央標準局員工消费合作社印製 A6 B6 五、發明説明（ ） 向®g的不均勻磁場，而造成之電子束失真可得到補償。這 使得投射到蜜光幕周圍的電子束點成為圓形點。 然而，在傳統彩色陰極射線管之電子槍1 ,因垂直延 長的電子束與平行延長的電子束分別通過孔5H (位於聚焦 電極5的發射面）和孔6H (位於動態聚焦電極6的入射面 上），故很難得到精確的垂直孔5H和平行孔6H的橫截面。 特別地因為聚焦電極5和動態聚焦電極6 (形成一四 極電子透鏡）之間，以—預先測定的長度分開，因遍佈於 電子槍頸部的電場所致，而使四極電子透鏡失真。 為解決這問題，有他人提出—種解決的方法，就是在 一聚焦電極上設立數個長方形電極（擁有平板外形之擴增 的葉M)和至少在長方形電極中之一外加一固定電子束聚 焦電壓〇這裡，一動態電壓以電子束聚焦電壓為參考電壓 ，並根據電子束偏向而改變，而將動態電壓施加於其餘長 方开多電極上。此方法可解決電子束的像散性，但不能解決 由於穿透電場所造成四極電子透鏡之失真問題。進一步地 ,因長方形電極是置於聚焦電極的相對面上，而使電子槍 長度增長，但這並不符合我們的要求。 <發明之總論> 因此，本發明的目的即在提供一種彩色陰極射線管之 電子槍，能夠補償像散性和由於偏向軛的不均勾磁場所造 成之電子束聚焦問題，使我們得到一整個沒有光環産生的 均勻電子束點。 為達成此目的，本發明提供了一彩色陰極射線管之電 -5- '__ 本紙張尺度顧中_家料丨咖f 4規格（210X297公$ " (許先閱讀背面之汰意事項再填窝本頁) 裝................…-訂：… .....線… 經濟部中央標準局員工消費合作社印製 A6 •_B6_ 五、發明説明（ ） 子槍，包括了三値排成一排的陰極，一聚焦電極，一動態 聚焦電極，這些電極連續排列在電子搶的軸上，其中向陰 極延伸的垂直葉片（以一預先測定的長度），設立在聚焦 電極發射平面上的電子束通過孔之間，在電子束通過孔之 上端和下端兩側的形成數値插槽，插於插槽内之平行葉片 設立在電子束通過孔的上端和下端（這些孔是位於動態聚 焦電極的電子入射平面上），一預先設定電壓偽施加在聚 焦電極上，一動態聚焦電壓像施力Π於動態聚焦電極上，這 動態聚焦電壓是根據電子束偏向而變化，變化大小比聚焦 電壓要來得大。 〈圖示之簡單説明〉 參考所附的圖示，以一較佳的具體實例詳細說明之， 則更能為人所顯而易見本發明的上述目的和優點。其中： 第1圖表示當電子束從一傳統電子槍射出，然後打到 陰極射線管的螢光幕上，所形成此想像的電子束。 第2圖是傳統的彩:色陰極射線管的部分透視圖，並表 示了—外加電壓的方式。 第3圖是本發明的彩色陰極射線管之部分透視圖，並 表示了一外加電壓的方式。 第4〜7圖是根據本發明不同的具體實例的一些聚焦 電極部分透視圖，和（或）彩色陰極線管之電子槍的動態 聚焦電極； 第8圖是第7圖之一‘膚況的剖面圖，其中第7的動 態聚焦電極的平行葉Μ ,插入至第7圖的聚焦電極之插槽 ___~ 6 j 本紙張尺度適用中國國家標準（CNS)甲4规格（210X297公釐） ..................................................................................裝 ...............訂 ！.........線 【諳先閲讀背面之注意事項再填窝夂頁) 經濟部中央標準局員工消費合作社印製 A6 __B6____ 五、發明説明（ ） ' 内；及 第9圖是根據第3圖的具體實例，所見到對—電子束 的景5響示意圖，此影響的因素是由聚焦電極的垂直葉片和 動態聚焦電極的平行葉片，所形成的四極電子透鏡所構成 〇 <較佳具體實例之詳細描述> 本發明是一種用於彩色陰極射線管之電子槍，此電子 槍附著於陰極射線管的頸部，發射出熱離子，其中一種具 體簧例說明如第3圖所示。 如第3圖所示，本發明的彩色陰極射線管之電子槍， 包括有一陰極12，一控制電極13和一螢幕電極14，此三値 電極構成三極真空管；一聚焦電極15，一動態聚焦電極16 和一尾端加速電極17，這些電極形成一$S助電子透鏡和一 主要電子透鏡，這些電極連續沿著電子槍主軸排列著。至 於本發明一獨有的特性，就是以一預先設定長度之垂直葉 Η 200，此垂百葉Μ朝陰極12延伸，並裝在聚焦電極15的 電子射出面上之三値電子束通過孔15Ε、15G和15Β的兩側 。平行插槽是位於電子束通過孔15R、15G和15Β的上端和 下端，而這些電子束通過孔是位於聚焦電極15的電子射出 面上。 平行窠Η板300 (用來插入至聚焦電極15的電子射出 面上之插槽301)設立在三個電子束通過孔16R、16G和16Β 的上端和下端，而這電子束通過孔是位於動態聚焦電極16 的電子射入面上，也是聚焦電極15的電子射出面的對面平 -Ί- 本紙張尺度適用中國國家標準（CNS)甲4規格（210X297公釐) ' .........................................I.::i:丨.：K............:裝......................，ΤΓ.....................線 {故先閱讀背面之注意事項再填窝木頁> 經濟部中央標準局員工消費合作社印製 A6 _______B6 五、發明説明（ ） 面上。為了防止平行葉片300在插入插槽301之後，會接觸 到聚焦電極15的電子發射面，故插槽301的寛度w和高度 h應足夠大，而超過這水平葉片300之寬度w和厚度t， 如此便可防止上述問題。 第4圖表示了另一種具體實例，是將垂直葉片置於聚 焦電極15的電子射出面的内部面，而平行葉Η置於動態聚 焦電極16的電子入射面上。 參考第4圔，垂直葉Μ 200之構成是在電子束通過孔 15R、15G和15Β之間（這些孔是形成在聚焦電極15的電子 射出面上）放置平板外形的電極塊201，而這些平板外形 的電極塊之方向是朝向陰極方向。平行葉片301是插在電 子入射面上，並且與動態聚焦電極16的電子入射面上形成 一體的結構。 第5圖所示，仍是本發明之電子槍，其平行葉>4之另 一種具體實例說明。 在第5圖中，平行葉Η320之搆造為一平板構件321, 在平板構件321中，電子束通過孔16R\ 16G’和16Β’對應 到動態聚焦電極13的孔16R、16G和16B，電極部分322是設 立在平板構件之電子束通過孔的上端和下端，而將這平板 構件固定在動態電極16上。 第6圖所示，為本發明垂直葉Η的另一種具體實例， 周圍電極部分211圍繞在電子束通過孔15R和158的夕卜圍， 並固定於聚焦電極15之電子射出面的内部表面上。至於本 發明平行葉片的其他具體實例，如第7圖和第8圖，一側 -8- 本紙張尺度適用中國國家標準（GNa)¥4规格（210><297公釐） {諝先閱請背面之生意事項再填窝本頁) .裝 -訂. 經濟部中央標準局員工消費合作社印製 A6 _B6_， ' 五、發明説明（ ） 邊平板式構件331,分別設立在動態聚焦電極16上的電子 束通過孔16R、16G和16B的上端和下端。在此情況下，一 插槽301 ’設立在聚焦電極15的電子束通過孔15R、15G和15 B的上端和下端，分別將平板式構件331插入到插槽301 ’内 〇 為了改變由垂直葉片200或210,和平行葉H300、310 或320所形成之四極透鏡的效果，我們可藉著設計來決定 插入到插槽301或301’（這插槽是在聚焦電極15上）之平 行葉片的長度和位於在聚焦電極15之電子射出面的垂直葉 Η的長度（這垂直葉Η是朝向陰極延伸）。 在彩色陰極射線管之電子槍的操作期間，各別施加在 各電極上的電壓如下。 施於陰極上的電壓為50〜170伏特。施於控制電極13 的電歷為-100〜0伏特。施於蜜幕電極14的電壓為400〜 800伏特。施於尾端加速電極17上的陽極電歷Vf其大小為 20〜30KV。聚焦電壓Vf (其值為曝極電壓Va的20〜30%) 施加於聚焦電極15上。一動態聚焦電壓Vfd (其值比聚焦 電壓大0· 3〜1.5KV)施加於動態聚焦電極16上。這動態聚 焦電壓之改變，是與偏向®I的偏向信號做同步變化。 現在，解釋本發明彩色陰極射線管之電子槍的操作情 形如下。 當預先測定電壓分別施於本發明彩色陰極射線管之電 的各各電極上時，一預先聚焦電子透鏡在螢幕電極14和聚 焦電極15之間形成，若動態聚焦電壓Wd施於動態聚焦電 -9_ 紙張尺度適用中國國家標準（CNS)甲4规格（210 X 297公ϋ 請先閲讀背面之注意事項再填窝本頁) .裝 訂. 經濟部中央標準局員工消費合作社印製 A6 _____B6_， ， 五、發明説明（ ） 極16上時，在聚焦電極15和動態聚焦電極16之間就形成一 四極電子透鏡。在動態聚焦電極16和尾端加速電極17之間 形成一主要電子透鏡。 從陰極12所射出的電子，通過各電極之間所形成之電 子透鏡之後，投射至整個普光幕上。我們可將投射出去的 電子分為兩種情況：第一種是當電子束投射至蠻光幕的中 央’第二種是電子束投射到蠻光幕的周圍。 第一種情況，當從電子槍10所發射出的電子束投射到 營光幕的中央時，因電子束不會被偏向扼所福向，這重力態 聚焦電壓Vfd並未施加於動態聚焦電極16上，並且僅只有 聚焦電MVf施加在電子束上。因此，在聚焦電極15和動態 聚焦電極16之間沒有電位差存在，這使得四極霄子透鏡不 會在垂直葉片200和平行葉H300之間形成。從陰極所發射 出的電子束，最初被預先聚焦電子透鏡聚焦和加速，然後 再被這主要電子透鏡在尾端聚焦和加速，這樣便使得電子 束在螢光幕的中央聚焦得最好。根據這樣，落到螢光幕上 的電子束點就能形成一小圓點。 當電子束自陰極12投射到螢光幕的周圍時，聚焦電壓 Vf施加於聚焦電極15和一動態聚焦電壓ved (Vfd是與偏向 信號做同步變化）施加於動態聚焦電極16。因此，在垂直 葉Η 200和平行葉H300之間産生一電位差，這形成了四極 電子透鏡。因此，自陰極12所發射出的電子束，藉由預先 聚焦電子透鏡被先聚焦和力卩速，而通過形成在垂直葉片 200和水平葉Η300之間的四極電子透鏡時，電子束垂直方 -10- >紙張尺度ίέ用中國國家標,（CNS)甲4規格（210χ297公笼） ' ..................................................................................裝......................訂 ..............線. (资先閲讀背面之·&意事項弄填寫本頁一 經濟部中央樣準局員工消费合作社印製 A6 _B6_, 五、發明説明（ ） 向被延長了。這垂直方向被延長的電子束然後藉由主要電 子透鏡聚焦和力Π速》同時被偏向軛偏向，使電子束朝向營 光幕周圍投射。當垂直方向被延長的電子束被這偏向飯以 此種方式偏向，這電子束因偏向磁場的不均勾而産生橫方 向上的失真。據此，朝營光幕周圍投射的電子束就形成一 圖點。 更特別地，如第9圖所示，當電子束通過這四極電子 透鏡，而這電子四極透鏡之形成是因垂直葉片20Θ (朝向 陰極12延伸，以一預先測定之長度，在聚焦電極15的電子 射出面上之各別的電子束通過孔15R、15G和15B上）和平 行葉M300 (這平行葉Η是裝在動態聚焦電極16的電子入 射面上，並插入位於聚焦電極15的電子射出面上之插槽 301上），於是電子束收到一強大的水平方向聚焦的力量和 一強大的垂直方向上的散焦力量。這使電子束的橫切面之 垂直方向伸長，並且這樣做使電子束垂直方向的焦聚要比 水平方向上的焦聚長。因垂直方向被延長的電子束收到一 垂直方向上的強大聚焦力和一水平方向上較弱的聚焦力（ 這是因偏向II的不均句磁場所致），此電子束之橫截面因 垂直葉200和平行葉Η 300所形的四極電子透鏡所影響， 而在垂直方向被延長，而使得電子束落到螢光幕的周圍成 為圓點。 因動態聚焦電壓Vfd (Vfd是以聚焦電壓Vf為其參考電 壓）施加於動態聚焦電極16，此在尾端加速電極17和動態 聚焦電極16之間的電位差降低，因此減低了主要電子透鏡 -11- 本紙張尺度適用中國國家標準（CNS)甲4規格（210X297公釐） {«'先閲讀背面之生意事項再填寫本頁) .裝 .訂 A6 B6 經濟部中央標準局員工消費合作社印製 五、發明説明（ ）. ， 的強度。此電子束的焦聚長度要比投射到營光幕中央之電 子束焦聚長度來得小，因此當電子束投射到蜜幕周圍時， 能得到一最佳化的焦聚。在本發明的彩色陰極射線管之電 子槍中，因垂直葉Η 200和水平葉片300位於聚焦電極15之 内部，在内部形成這四極電子透鏡，使沿頸部周圍所流之 漏電流影馨能減少。特別地說，如第6圖所示，若垂直葉 Η組成周圍電極之一員221 (圍繞在電子束通過孔的外圍 ),在外部充滿電場之減少效果可加倍。 由平行葉片310、320和330與垂直葉片220和210所形 成的四極電子透鏡，這幾種其它的具體實例等等如第4、 5、6、7和8圖所示，它們的功能與上述所談的有同樣 之作用。 如上所插述，本發明的彩色陰極管之電子槍，其電子 束的失真問題藉由在垂直葉Η和水平葉片（這些葉Μ在聚 焦電極和動態聚焦電極上）之間産生的電位能差得到補償 * ，而這電子束失真是在電子束被偏向軛偏向時，因不均勻 偏向磁場所造成的。這樣的補僂可減輕像散性和改善電子 焦聚。 如先前所描述的一些具體實例，本發明的用途並不限 於這種一排式電子槍（擁有三個陰極），而且更可廣泛的 使用在射出單一的電子束或數値電子束的電子槍中。 {价先閲讀背面之注意事項再填窝各頁) 裝 訂. -绛· -12- 本纸張尺度逋用中國國家標準(_CNS)甲4規格（210X297公釐）Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs • A6 ___B6_ V. Description of the invention () < Fei Jing of the invention > The present invention relates to an electron gun for a color cathode ray tube, which is attached to the neck of the cathode ray for Emitting an electron beam, and more specifically, the present invention relates to an electron gun for a color cathode ray tube, in which the astigmatism and focusing problems caused by the biased yoke toward the electron beam can be corrected, so that the whole honeycomb is formed. Electron beam spots on light can be evenly distributed. Generally speaking, the resolution of a color cathode ray tube depends on the diameter and shape of the electron beam spots hitting the entire screen. In order to obtain a high-resolution image, (the electron beam spot on the screen should be as small as possible, (2) the distortion of the electron beam spot should be as small as possible, and (3) there should be no halo generation, these points are It is very important. However, in general color cathode ray tubes, because the electron guns (three electron beams are emitted) are located in the same row, a parallel deflection magnetic field (a so-called pincushion distortion Di magnetic field) is generated by using a deflection yoke in parallel ) And the vertical bias magnetic field (that is, the barrel distortion adjustment magnetic field), .............. to achieve self-focusing mode. As shown in Figure 1, hit the camp The electron beam spot 101 around the light curtain 100, the high-luminance central portion 102, and the low-degree haze portion 103 are all caused by the biased light uneven magnetic field. Due to spherical aberration and the image of the electron gun The divergence and the difference between the vertical and horizontal focal lengths of the electron beam cause the uneven shape of the electron beam spot 101, which is not considered to form a high-quality image. Figure 2 shows a traditional color cathode ray The tube gun is designed to solve this problem Referring to the second section, a cathode 2, a control electrode 3 and a screen electrode 4 constitute a triode vacuum tube, a focusing electrode 5, and a dynamic focusing electrode ~ 3 ~ This paper is applicable to ti national standard i (CNS) A4 1210x297 mm) ............... .......-...................... ^ —........ .........., order .............. line (Read the notes on the back before filling this page) A6 B6 Five Description of the invention () 6 and a rear-end force rapid-speed electrode 7 are continuously arranged in the electron gun of the traditional color cathode-ray tube to form an auxiliary electron lens and a main electron lens. The vertically extended electron beam and the parallel extended electron beam pass through holes 5H and 6H formed on the opposing surfaces of the focusing electrode 5 and the dynamic focusing electrode 6, respectively. A focusing voltage Vf and an anode voltage Va are applied to the focusing electrode 5 and the trailing end acceleration electrode 7, respectively. A dynamic focus voltage Vfd (taking the focus voltage as a reference voltage and synchronizing with the bias signal) is applied to the dynamic focus electrode 6. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling the page). The wire is installed in the structure of the traditional color cathode-ray tube electron gun 1. When an electron beam is projected to the center of the camp light curtain At this time, since the voltage applied to the dynamic focusing electrode 6 is the same as the focusing voltage Vf, a quadrupole electron lens is not formed between the focusing electrode 5 and the dynamic focusing electrode 6. The electron beam emitted from the cathode 2 is focused and accelerated by the main electron lens formed between the dynamic focusing electrode 6 and the tail end acceleration electrode 7. When the electron beam is projected to the center of the screen, a circle is formed. Shaped electron beam. When the electron beam is projected from the cathode 2 to the periphery of the screen, a dynamic focusing voltage Vfd (synchronized with the deflection signal and using the focusing voltage Vf as a reference voltage) is applied to the dynamic focusing electrode 6, and a quadrupole electron lens is formed on Between the focusing electrode 5 and the dynamic focusing electrode 6, the quadrupole electron lens is formed by an electron beam passing hole 5H extending in a vertical direction on the opposite surface of the two electrodes and an electron beam passing hole 6H extending in a parallel direction. Through the quadrupole electron lens, the electron beam emitted from the cathode 2 receives a strong parallel focusing force and a strong vertical defocusing force, which makes the cross section of the electron beam extend in the vertical direction. When the vertically-extended electron beam is deflected to the periphery of the screen, due to the deflection -4- this paper size is common Chinese National Standard (CNS) A4 specification (210 X 297 mm). Cooperative prints A6 B6 V. Description of the invention () The uneven magnetic field in the direction of g can compensate the distortion of the electron beam. This makes the spot of the electron beam projected around the honeycomb screen into a circular spot. However, in the electron gun 1 of the conventional color cathode ray tube, the vertically extended electron beam and the parallel extended electron beam pass through the hole 5H (located on the emission surface of the focusing electrode 5) and the hole 6H (located on the incident surface of the dynamic focusing electrode 6). ), It is difficult to obtain accurate cross-sections of vertical holes 5H and parallel holes 6H. Especially because the focusing electrode 5 and the dynamic focusing electrode 6 (forming a quadrupole electron lens) are separated by a predetermined length, the quadrupole electron lens is distorted due to the electric field spreading around the neck of the electron gun. In order to solve this problem, others have proposed-a solution is to set up a number of rectangular electrodes (having an enlarged leaf M in the shape of a flat plate) on a focusing electrode and at least one of the rectangular electrodes plus a fixed electron beam for focusing Voltage 0 Here, a dynamic voltage uses the focus voltage of the electron beam as a reference voltage and changes according to the bias of the electron beam, and the dynamic voltage is applied to the remaining rectangular multi-electrodes. This method can solve the astigmatism of the electron beam, but it cannot solve the problem of distortion of the quadrupole electron lens caused by penetrating the electric field. Further, the length of the electron gun is increased because the rectangular electrode is placed on the opposite side of the focusing electrode, but this does not meet our requirements. < Summary of the invention > Therefore, an object of the present invention is to provide an electron gun for a color cathode ray tube, which can compensate for astigmatism and electron beam focusing problems caused by an uneven magnetic field biased to a yoke, so that we obtain A uniform beam spot without a halo throughout. In order to achieve this purpose, the present invention provides a color cathode-ray tube for electricity -5- '__ This paper size Gu Zhong _ home materials 丨 coffee f 4 specifications (210X297 public $ " Fill in this page) .........- Order: ... ........ Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A6 • _B6_ V. Invention Explanation () The sub-gun includes three cathodes arranged in a row, a focusing electrode, and a dynamic focusing electrode. These electrodes are continuously arranged on the axis of the electron grabber. Among them, the vertical blades extending toward the cathode (using a pre-determined Length), set up between the electron beam passage holes on the emission plane of the focusing electrode, forming several slots on both sides of the upper and lower ends of the electron beam passage holes, and parallel blades inserted in the slots are established in the electron beam passage holes. At the upper and lower ends of the (the holes are located on the electron incident plane of the dynamic focusing electrode), a preset voltage is pseudo-applied to the focusing electrode, and a dynamic focusing voltage is like a force applied to the dynamic focusing electrode. This dynamic focusing voltage is based on Electron beam deflection changes Smaller than the focus voltage. <Simplified description of the diagram> With reference to the attached diagram, a detailed specific example will be used to explain it in detail, which will make the above objects and advantages of the present invention more obvious to others. Among them: Figure 1 shows the imaginary electron beam formed when an electron beam is emitted from a conventional electron gun and hits the screen of a cathode ray tube. Figure 2 is a partial perspective view of a traditional color: color cathode ray tube, And shows the way of applying voltage. Figure 3 is a partial perspective view of the color cathode ray tube of the present invention, and shows a way of applying voltage. Figures 4 to 7 are some highlights according to different specific examples of the present invention. A perspective view of the electrode part, and / or a dynamic focusing electrode of the electron gun of the color cathode-ray tube; FIG. 8 is a cross-sectional view of the skin condition of FIG. 7, in which the parallel leaves M of the dynamic focusing electrode of the seventh are inserted into the first The slot of the focusing electrode in Figure 7 ___ ~ 6 j This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) ......... ....................................... ................... Installing ............... Order! ......... line [谙 Read the notes on the back first (Fill the title page again.) Printed by A6 __B6____ of the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention () '; and Figure 9 is based on the specific example in Figure 3. What you see is the 5th view of the electron beam. Schematic diagram, the influencing factors are the quadrupole electron lens formed by the vertical blades of the focusing electrode and the parallel blades of the dynamic focusing electrode. ≪ Detailed description of the preferred embodiment > The present invention is a color cathode ray An electron gun of a tube, which is attached to the neck of a cathode ray tube and emits thermal ions. A specific spring example is shown in FIG. 3. As shown in FIG. 3, the electron gun of the color cathode ray tube of the present invention includes a cathode 12, a control electrode 13, and a screen electrode 14. The three electrodes form a triode vacuum tube; a focusing electrode 15, a dynamic focusing electrode 16 and a trailing acceleration electrode 17, these electrodes form a $ S auxiliary electron lens and a main electron lens, these electrodes are continuously arranged along the main axis of the electron gun. As for a unique characteristic of the present invention, a vertical blade Η 200 having a predetermined length is provided. The vertical louver M extends toward the cathode 12 and the three 値 electron beam passing holes 15E, which are mounted on the electron emission surface of the focusing electrode 15. 15G and 15B on both sides. The parallel slots are located at the upper and lower ends of the electron beam passing holes 15R, 15G, and 15B, and these electron beam passing holes are located on the electron emission surface of the focusing electrode 15. The parallel cymbal plate 300 (for inserting into the slot 301 of the electron emission surface of the focusing electrode 15) is set at the upper and lower ends of the three electron beam passing holes 16R, 16G, and 16B, and the electron beam passing holes are located at the dynamic The electron incident surface of the focusing electrode 16 is also opposite to the electron emitting surface of the focusing electrode 15 -Ί- This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) '... ........................ I.::i: 丨.: K ...... ......: installed ............, ΤΓ ........ ... line {So read the precautions on the back before filling in the wood pages> Printed by A6 _______B6 on the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. The description of the invention (). In order to prevent the parallel blade 300 from contacting the electron emission surface of the focusing electrode 15 after being inserted into the slot 301, the width w and height h of the slot 301 should be large enough to exceed the width w and thickness t of the horizontal blade 300 This will prevent the above problems. Fig. 4 shows another specific example in which a vertical blade is placed on the inner surface of the electron emission surface of the focusing electrode 15, and a parallel blade is placed on the electron incidence surface of the dynamic focusing electrode 16. Referring to section 4), the vertical leaf M 200 is constituted by placing an electrode block 201 having a plate shape between the electron beam passing holes 15R, 15G, and 15B (the holes are formed on the electron exit surface of the focusing electrode 15), and these plates The direction of the external electrode block is toward the cathode. The parallel blade 301 is inserted into the electron incident surface and is formed integrally with the electron incident surface of the dynamic focusing electrode 16. Fig. 5 shows still another specific example of the parallel gun > 4 of the electron gun of the present invention. In FIG. 5, the structure of the parallel leaf blade 320 is a flat plate member 321. In the flat plate member 321, the electron beam passing holes 16R \ 16G ′ and 16B ′ correspond to the holes 16R, 16G, and 16B of the dynamic focusing electrode 13. The part 322 is an upper end and a lower end of the electron beam passing hole set in the plate member, and the plate member is fixed to the dynamic electrode 16. FIG. 6 shows another specific example of the vertical leaf blade of the present invention. The peripheral electrode portion 211 surrounds the electron beam passing holes 15R and 158, and is fixed on the inner surface of the electron emission surface of the focusing electrode 15. . As for other specific examples of the parallel blades of the present invention, such as FIG. 7 and FIG. 8, one side-this paper size applies the Chinese National Standard (GNa) ¥ 4 specification (210 > < 297 mm) {谞 read first Please fill in this page for business matters on the back). Binding-booking. Printed by A6 _B6_, the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of the invention () The side plate type members 331 are set on the dynamic focusing electrodes 16 respectively. The electron beam passes through the upper and lower ends of the holes 16R, 16G, and 16B. In this case, a slot 301 ′ is set at the upper and lower ends of the electron beam passage holes 15R, 15G, and 15 B of the focusing electrode 15, and a flat plate member 331 is inserted into the slot 301 ′. 200 or 210, and the effect of the quadrupole lens formed by the parallel leaves H300, 310 or 320, we can design to determine the parallel blades inserted into the slot 301 or 301 '(this slot is on the focusing electrode 15) The length and the length of the vertical blades located on the electron emission surface of the focusing electrode 15 (the vertical blades extend toward the cathode). During the operation of the electron gun of the color cathode ray tube, the voltages applied to the respective electrodes are as follows. The voltage applied to the cathode is 50 to 170 volts. The electrical calendar applied to the control electrode 13 is -100 to 0 volts. The voltage applied to the honeycomb electrode 14 is 400 to 800 volts. The anode electric calendar Vf applied to the tail-end acceleration electrode 17 has a size of 20 to 30 KV. A focus voltage Vf (its value is 20 to 30% of the exposure voltage Va) is applied to the focus electrode 15. A dynamic focus voltage Vfd (which is 0.3 to 1.5 KV larger than the focus voltage) is applied to the dynamic focus electrode 16. This dynamic focus voltage change is synchronized with the bias signal biased to I. Now, the operation of the electron gun of the color cathode ray tube of the present invention is explained as follows. When the pre-measured voltages are applied to the electrodes of the color cathode ray tube of the present invention, a pre-focusing electron lens is formed between the screen electrode 14 and the focusing electrode 15. If the dynamic focusing voltage Wd is applied to the dynamic focusing voltage − 9_ The paper size applies to China National Standard (CNS) A4 specifications (210 X 297 public ϋ Please read the precautions on the back before filling in this page). Binding. A6 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs _____B6_,, 5 2. Description of the invention When () pole 16 is formed, a quadrupole electron lens is formed between the focusing electrode 15 and the dynamic focusing electrode 16. A main electron lens is formed between the dynamic focusing electrode 16 and the tail-end acceleration electrode 17. The electrons emitted from the cathode 12 pass through an electronic lens formed between the electrodes and are projected onto the entire light curtain. We can divide the projected electrons into two cases: the first is when the electron beam is projected to the center of the light curtain's second; the second is when the electron beam is projected around the light curtain. In the first case, when the electron beam emitted from the electron gun 10 is projected to the center of the camp light curtain, since the electron beam will not be biased by the beam, the gravitational focusing voltage Vfd is not applied to the dynamic focusing electrode 16 And only the focused electric MVf is applied to the electron beam. Therefore, no potential difference exists between the focusing electrode 15 and the dynamic focusing electrode 16, which prevents the quadrupole lens from being formed between the vertical blade 200 and the parallel blade H300. The electron beam emitted from the cathode is initially focused and accelerated by a pre-focusing electron lens, and then focused and accelerated by the main electron lens at the tail end, so that the electron beam is best focused at the center of the screen. According to this, the electron beam spots falling on the screen can form a small dot. When the electron beam is projected from the cathode 12 to the periphery of the screen, a focusing voltage Vf is applied to the focusing electrode 15 and a dynamic focusing voltage ved (Vfd is synchronized with the bias signal) is applied to the dynamic focusing electrode 16. Therefore, a potential difference is generated between the vertical leaf blade 200 and the parallel leaf H300, which forms a quadrupole electron lens. Therefore, the electron beam emitted from the cathode 12 is first focused and forced by the pre-focusing electron lens, and passes through the quadrupole electron lens formed between the vertical blade 200 and the horizontal blade ， 300, the electron beam is vertically- 10- > Paper scales use the Chinese national standard, (CNS) A4 size (210x297 male cage) '............... ........................................ ... installation ............ order ......... line. (Read first On the back of the & Italian matter, fill in this page. A6 _B6_ printed by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs, V. The description of the invention () has been extended. The vertically extended electron beam is then transmitted by the main electron. "Focus on Lens and Force Π Speed" is also deflected by the yoke, so that the electron beam is projected around the camp light curtain. When the vertically extended electron beam is deflected by this deflection in this way, the electron beam is deflected by the uneven magnetic field Distortion occurs in the horizontal direction. According to this, the electron beam projected around the camp light curtain forms a picture point. More specifically, as shown in FIG. The beam passes through the quadrupole electron lens, and the formation of the electron quadrupole lens is caused by the vertical blades 20Θ (extending toward the cathode 12 and at a predetermined length, the respective electron beam passing holes 15R on the electron exit surface of the focusing electrode 15 , 15G and 15B) and parallel leaves M300 (the parallel leaves are mounted on the electron incident surface of the dynamic focusing electrode 16 and inserted into the slot 301 on the electron emitting surface of the focusing electrode 15), so the electron beam is collected The power of focusing to a strong horizontal direction and the power of defocusing in a vertical direction. This makes the vertical direction of the cross section of the electron beam elongated, and in doing so, makes the vertical focus of the electron beam more than that in the horizontal direction. The focal length is long. Because the electron beam extended in the vertical direction receives a strong focusing force in the vertical direction and a weak focusing force in the horizontal direction (this is caused by the uneven sentence magnetic field biased to II), this electron beam The cross section is affected by the quadrupole electron lens shaped by the vertical leaf 200 and the parallel leaf blade 300, and is extended in the vertical direction, so that the electron beam falls around the screen and becomes a dot. The dynamic focus voltage Vfd (Vfd uses the focus voltage Vf as its reference voltage) is applied to the dynamic focus electrode 16, which reduces the potential difference between the tail end acceleration electrode 17 and the dynamic focus electrode 16, thereby reducing the main electron lens-11- This paper size applies to China National Standard (CNS) A4 specifications (210X297 mm) {«'Read the business matters on the back before filling this page). Binding. Order A6 B6 Printed by the Central Consumers Bureau of the Ministry of Economic Affairs Consumer Cooperatives 5. Description of the invention (). The focal length of this electron beam is smaller than the focal length of the electron beam projected to the center of the camping light curtain, so when the electron beam is projected around the honey curtain, an optimized focal length can be obtained. In the electron gun of the color cathode-ray tube of the present invention, since the vertical blades 200 and the horizontal blades 300 are located inside the focusing electrode 15, the quadrupole electron lens is formed inside, so that the leakage current flowing around the neck can be reduced. . In particular, as shown in FIG. 6, if the vertical blade Η constitutes one of the surrounding electrodes 221 (surrounding the periphery of the electron beam passing hole), the reduction effect of the external electric field can be doubled. Quadrupole electron lenses formed by parallel blades 310, 320, and 330 and vertical blades 220 and 210. These other specific examples are shown in Figures 4, 5, 6, 7, and 8. Their functions are similar to those described above. What has been said has the same effect. As mentioned above, the electron beam distortion problem of the color cathode tube electron gun of the present invention is obtained by the potential energy difference between the vertical blades and the horizontal blades (the leaves M on the focusing electrode and the dynamic focusing electrode). Compensation *, and this electron beam distortion is caused by the unevenly biased magnetic field when the electron beam is biased toward the yoke. Such supplementation can reduce astigmatism and improve electron focus. As some specific examples described previously, the application of the present invention is not limited to such a single-row electron gun (having three cathodes), but can be more widely used in an electron gun that emits a single electron beam or a few electron beams. (Please read the precautions on the back before filling the pages of the nest) Binding.-绛 · -12- This paper size is in accordance with China National Standard (_CNS) A4 specification (210X297 mm)