TW516066B - Electron gun for cathode-ray tube and cathode-ray tube - Google Patents
Electron gun for cathode-ray tube and cathode-ray tube Download PDFInfo
- Publication number
- TW516066B TW516066B TW90122247A TW90122247A TW516066B TW 516066 B TW516066 B TW 516066B TW 90122247 A TW90122247 A TW 90122247A TW 90122247 A TW90122247 A TW 90122247A TW 516066 B TW516066 B TW 516066B
- Authority
- TW
- Taiwan
- Prior art keywords
- electrode
- electron
- electron beams
- ray tube
- cathode ray
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
- H01J29/503—Three or more guns, the axes of which lay in a common plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/48—Electron guns
- H01J2229/50—Plurality of guns or beams
- H01J2229/507—Multi-beam groups, e.g. number of beams greater than number of cathodes
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Description
16066 A7 B7 五、發明説明(1 ) 發明之技術領域 本發明係有關陰極射線管用電子槍及具備該電子槍的陰 極射線管,該陰極射線管用電子槍構成多束電子槍,其 係對陰極射線管的同色螢光體射出數個電子束,並照射 在螢光面上。 先前技術 近年來,對具備高精細、高亮度及低驅動電壓之陰極射 線管的要求殷切。 而爲求高精細化,如嘗試縮小電子槍第一電極與第二電 極之電子束的通過孔徑,以縮小光點尺寸。 但是,縮小電子槍之第一電極與第二電極之電子束通過 孔徑時,爲求確保獲得顯示上所需亮度的足夠電流量, 須增加驅動電壓。驅動電壓變大時,於高頻驅動中的信 號追隨性差。 因此,曾提出一種所謂的多束電子槍,其目的在不增加 驅動電壓,而縮小第一電極與第二電極的電子束通過 孔,以縮小光點尺寸。 先前之電子槍對一個陰極形成有一個電子束通過孔。而 上述提案則是對一個陰極形成有第一電極與第二電極的 兩個電子束通過孔。 藉此,可對陰極射線管之同色螢光體射出兩個電子束, 進行各色顯示。 另外,上述的構造係對兩個電子束通過孔設置共用的陰 極。但是,亦可採用在各電子.束通過孔上分別單獨設置 -4- 本纸張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 16066 A7 B7 五、發明説明(2 ) 極的構造。 不論採何種構造,均可射出同色顯示用的數個電子束。 如此,藉由分別形成兩個陰極射線管之同色螢光體顯示 用的電子束通過孔,在同一驅動電壓與電子束通過孔大小 的條件下,可增加電流量至兩倍。 裝 藉此,縱使縮小電子束通過孔,通過各電子束通過孔的 電流量減半,整體上仍能獲得與先前同樣的電流量,因 此,縱使不升高驅動電壓,亦可獲得執行顯示的足夠亮 度。 因此,藉由縮小電子束通過孔,可縮小畫面上之電子束 的光點尺寸。 此外,由於無須升高驅動電壓,因此,縱使是高頻驅 動,信號波形的追隨性仍然良好。 發明所欲解決之課題16066 A7 B7 V. Description of the Invention (1) Technical Field of the Invention The present invention relates to an electron gun for a cathode ray tube and a cathode ray tube provided with the electron gun. The electron gun for the cathode ray tube constitutes a multi-beam electron gun, which is the same color fluorescent lamp for the cathode ray tube. The light body emits several electron beams and irradiates the fluorescent surface. Prior art In recent years, there has been an increasing demand for cathode ray tubes having high definition, high brightness, and low driving voltage. In order to achieve high definition, for example, an attempt is made to reduce the aperture diameter of the electron beams of the first electrode and the second electrode of the electron gun to reduce the spot size. However, when the electron beam passing apertures of the first electrode and the second electrode of the electron gun are reduced, in order to ensure a sufficient amount of current to obtain the required brightness on the display, the driving voltage must be increased. When the driving voltage increases, the signal followability in high-frequency driving is poor. Therefore, a so-called multi-beam electron gun has been proposed, the purpose of which is to reduce the spot size of the electron beam passing holes of the first electrode and the second electrode without increasing the driving voltage. Previous electron guns formed an electron beam passing hole to a cathode. In the above proposal, two electron beam passing holes are formed in a cathode with a first electrode and a second electrode. Thereby, two electron beams can be emitted to the phosphors of the same color of the cathode ray tube, and the respective colors can be displayed. In addition, the above-mentioned structure is provided with a common cathode for the two electron beam passing holes. However, it can also be set separately for each electron. Beam passing hole. -4- This paper size applies to China National Standard (CNS) A4 specification (210X 297 mm) 16066 A7 B7 V. Description of the invention (2) structure. Regardless of the structure, several electron beams for the same color display can be emitted. In this way, by forming two electron beam passage holes for the same color phosphor display of two cathode ray tubes separately, the current can be doubled under the same driving voltage and the size of the electron beam passage holes. As a result, even if the electron beam passing hole is reduced, the amount of current passing through each electron beam passing hole is halved, and the same current amount as before can be obtained as a whole. Therefore, the display can be obtained without increasing the driving voltage. Enough brightness. Therefore, by reducing the electron beam passing hole, the spot size of the electron beam on the screen can be reduced. In addition, since there is no need to increase the driving voltage, the followability of the signal waveform is good even with high-frequency driving. Problems to be solved by the invention
然而,上述之多束電子槍的構成,可考慮兩種構造,分 別是對第一電極及第二電極之各陰極形成兩個電子束通過 孔,其他電極形成兩個電子束共用之電子束通過孔的構 造,與其他電極也對各陰極形成兩個電子束通過孔(單獨) 的構造。 其中,其他電極(第三電極以後)也對兩個電子束形成獨 立之電子束通過孔的多束電子槍,使第一電極及第二電極 之數個電子束通過孔的位置與其他電極之前段透鏡與主透 鏡的中心軸概略一致。 但是,此時,由於構成前段透鏡及主透鏡之電極的電子 -5- 本纸張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 _______B7 五、發明説明(3 ) 束通過孔對兩個電子束單獨形成兩個,以致前段透鏡的直 徑及主透鏡·的値徑變小,電子束容易吸收透鏡的像差。 如此,由於吸收透鏡的像差,以致光點尺寸變大。 另外,其他電極(第三電極以後)對兩個電子束形成共用 之一個電子束通過孔的多束電子槍,由於可加大透鏡直 徑,因此不容易吸收透鏡的像差。 但是,此時,由於第一電極及第二電極之數個電子束通 過孔的位置與如段透鏡及主透鏡的中心軸不一致,因此, 前段透鏡及主透鏡中,電子束因受到朝向中心軸的力,在 光點形狀上出現暈圈(蓉形像差)以致光點尺寸變大。 如前所述,由於多束電子槍的目的在縮小光點尺寸,因 此’此種光點尺寸變大並不適宜。 此外,在多束電子槍内設置4重極透鏡,以改良晝面角 落部的聚焦特性時,會產生以下的問題。 如上所述’前段透鏡與主透鏡於數個電子束爲分別獨立 時,由於4重極透鏡也對數個電子束單獨設置,因此,$ 重極透鏡的直徑也變小,4重極透鏡也因吸收透鏡的像 差,使光點尺寸變大。 此外,前段透鏡與主透鏡於共用數個電子束時,由於 R’G’B各色的數個電子束自4重極透鏡的中心偏差,電 子束受到4重極作用,上下左右不均勻,因而產生畫面角 落部的光點尺寸變大的問題。 此外、,由於包含多束電子槍的電子槍,爲增加電流量而 改變驅動電壓時,因驅動電壓的改變造成電子之加速度改 -6 - 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 516066 A7 B7 五、發明説明(4 ) 變,以致電子束的執道偏差,電子束照射到鄰近的螢光 屏,也產生亮度偏差,色彩偏差的問題。 然而,在多束電子槍的應用上,有高亮度模式(TV模 式),其係對接收電視播放的影像等進行高亮度顯示,與 低亮度、高精細模式(P C模式)其係對個人電腦等顯示器 進行低亮度、高精細的顯示,考慮到將這些予以晝面切換 顯示,或是將畫面區域區分成各個模式來顯示。 爲實現具有這兩種顯示模式的陰極射線管,可將自多束 電子槍射出之對同色螢光體的數個電子束分配至兩個顯示 模式中。 但是,由於先前之多束電子槍的構造存在上述光點尺寸 變大的問題、爲增加電流量而改變驅動電壓時引起亮度偏 差及色彩偏差的問題、及設置4重極透鏡時部分畫面角落 的光點尺寸變大的問題,因此,很難實現具有兩種顯示模 式的陰極射線管。 爲求解決上述問題,本發明在提供一種陰極射線管用電 子槍及具備該電子槍的陰極射線管,可縮小多束電子槍的 光點尺寸,同時,縱使驅動電壓改變,電子束軌道不偏 差,可構成獲得良好圖像的高精細陰極射線管。 課題之解決手段 本發明之陰極射線管用電子槍對陰極射線管之同色螢光 體射出有數個電子束,在前段透鏡與主透鏡上形成有數個 電子束共用之電子束通過孔,使數個電子束在前段透鏡與 主透鏡之間交叉。 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(5 ) 本發明之陰極射線管具備一種電子槍,該電子槍對陰極 射線管之同色螢光體射出有數個電子束,在前段透鏡與主 透鏡上形成有數個電子束共用之電子束通過孔,使數個電 子束在前段透鏡與主透鏡之間交叉。 採用上述本發明之陰極射線管用電子槍的構造,因在前 段透鏡與主透鏡上形成有數個電子束共用之電子束通過 孔,使數個電子束在前段透鏡與主透鏡之間交叉,數個電 子束受到各前段透鏡的作用(如彗形像差及電子束的執道 改變)與受到主透鏡的作用相反,因此這些作用可相互抵 銷。 採用上述本發明之陰極射線管的構造,因具備上述本發 明的陰極射線管用電子槍,電子束受到前段透鏡的作用及 電子束受到主透鏡的作用可以抵銷,不增加螢光面之光點 的改變,因此,大幅減低光點的變化。 發明之實施形態 本發明提供一種對陰極射線管之同色螢光體射出有數個 電子束的電子槍,其係在前段透鏡與主透鏡上分別形成有 數個電子束共用的電子束通過孔,使數個電子束在前段透 鏡與主透鏡之間交叉的陰極射線管用電子槍。 此外,本發明之構造爲,在上述陰極射線管用電子槍 中,於數個電子束交叉點或交叉點附近配置4重極透鏡。 此外,本發明之構造爲,在上述陰極射線管用電子槍 中,對同色螢光體射出有兩個電子束,與陰極相對之第一 電極及該第一電極之螢光面端設置的第二電極中,兩個電 -8- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(6 ) 子束之其中一個通過之電子束通過孔爲大孔徑,兩個電子 束中另一個.通過之電子束通過孔爲小孔徑,其中一個電子 束與另一個電子束彼此切換射出。 此外,本發明之構造爲,上述陰極射線管用電子槍中, 第一電極被分割,使所射出之各電子束分別獨立。 此外,本發明之構造爲,上述陰極射線管用電子槍中, 第一電極被分割成兩部分,使兩個電子束之其中一個與另 一個彼此獨立。 本發明提供一種陰極射線管,其具備電子槍,該電子槍 對陰極射線管之同色螢光體射出有數個電子束,前段透鏡 與主透鏡上分別形成有數個電子束共用之電子束通過孔, 使數個電子束在前段透鏡與主透鏡之間交叉。 此外,本發明之構造爲,在上述陰極射線管中,於電子 槍之上述數個電子束交叉點或交叉點附近配置4重極透 鏡。 此外,本發明之構造爲,上述陰極射線管中,對同色螢 光體射出有兩個電子束,與陰極相對之第一電極及設置在 該第一電極之螢光面端的第二電極中,兩個電子束之其中 一個通過之電子束通過孔爲大孔徑,兩個電子束中另一個 通過之電子束通過孔爲小孔徑,其中一個電子束與另一個 電子束彼此切換射出。 此外,本發明之構造爲,上述陰極射線管用電子槍中, 第一電極被分割,使所射出之各電子束分別獨立。 此外,本發明之構造爲,上述陰極射線管用電子槍中, -9- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066However, the above-mentioned configuration of the multi-beam electron gun can be considered in two configurations, namely, forming two electron beam passing holes for each cathode of the first electrode and the second electrode, and other electrodes forming electron beam passing holes shared by the two electron beams. In addition to the structure of other electrodes, two electron beam passing holes (separate) are also formed on each cathode. Among them, the other electrodes (after the third electrode) also form multiple electron guns for the two electron beams to form independent electron beam passing holes, so that the positions of the electron beam passing holes of the first electrode and the second electrode are in front of other electrodes. The central axis of the lens and the main lens roughly match. However, at this time, due to the electrons of the electrodes constituting the front lens and the main lens, the size of this paper is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) 516066 A7 _______B7 V. Description of the invention (3) beam Two electron beams are formed separately through the holes, so that the diameter of the front lens and the diameter of the main lens become smaller, and the electron beam easily absorbs lens aberrations. As such, the aberration of the absorption lens causes the spot size to become large. In addition, in the multi-electron guns in which the other electrodes (after the third electrode) form a common electron beam passing hole for the two electron beams, since the lens diameter can be enlarged, it is difficult to absorb the lens aberrations. However, at this time, since the positions of the several electron beam passing holes of the first electrode and the second electrode are not the same as the central axis of the segment lens and the main lens, the electron beams in the front lens and the main lens are directed toward the central axis. Due to the force of light, a halo (amorphous aberration) appears on the spot shape so that the spot size becomes larger. As described above, since the purpose of the multi-beam electron gun is to reduce the spot size, it is not appropriate to increase the spot size. In addition, when a quadrupole lens is provided in the multi-beam electron gun to improve the focusing characteristics of the day-surface angle drop portion, the following problems arise. As mentioned above, when the front lens and the main lens are independent of several electron beams, the quadrupole lens is also set separately for the several electron beams. Therefore, the diameter of the quadrupole lens is also reduced, and the quadrupole lens is also The aberration of the absorption lens makes the spot size larger. In addition, when the front lens and the main lens share several electron beams, because the electron beams of each color of R'G'B are deviated from the center of the quadrupole lens, the electron beam is affected by the quadrupole, and the upper, lower, left, and right are uneven. There is a problem that the spot size at the corner of the screen becomes large. In addition, due to the electron gun containing multiple electron guns, when the driving voltage is changed in order to increase the amount of current, the acceleration of the electrons is changed due to the change in the driving voltage. -6-This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) ) 516066 A7 B7 V. Description of the invention (4) The electron beam is deviated from the way of the electron beam, and the electron beam is irradiated to the adjacent fluorescent screen, which also causes brightness deviation and color deviation. However, in the application of the multi-beam electron gun, there is a high-brightness mode (TV mode), which is used to display high-brightness images received on TV, and a low-brightness, high-definition mode (PC mode), which is used on personal computers, etc. The display performs low-brightness, high-definition display. Considering that these are switched for day-to-day display, or the screen area is divided into various modes for display. In order to realize a cathode ray tube having these two display modes, several electron beams of the same-color phosphor emitted from a multi-beam electron gun can be distributed to the two display modes. However, due to the structure of the previous multi-beam electron gun, the above-mentioned problems of the increase in the spot size, the problem of brightness deviation and color deviation caused by changing the driving voltage to increase the amount of current, and the light in the corners of some screens when a quadrupole lens is provided There is a problem that the dot size becomes large, and therefore, it is difficult to realize a cathode ray tube having two display modes. In order to solve the above problems, the present invention provides an electron gun for a cathode ray tube and a cathode ray tube provided with the electron gun, which can reduce the spot size of a plurality of electron guns. At the same time, even if the driving voltage is changed, the electron beam track does not deviate. High-resolution cathode-ray tube with good image. Solution to the Problem The electron gun for a cathode ray tube of the present invention emits several electron beams to the same-color phosphors of the cathode ray tube. An electron beam passing hole shared by several electron beams is formed in the front lens and the main lens, so that the plurality of electron beams are passed through. Cross between the front lens and the main lens. This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 V. Description of the invention (5) The cathode-ray tube of the present invention is provided with an electron gun, which is the same color phosphor of the cathode-ray tube. A plurality of electron beams are emitted, and an electron beam passing hole shared by the plurality of electron beams is formed on the front lens and the main lens, so that the plurality of electron beams cross between the front lens and the main lens. According to the structure of the electron gun for the cathode ray tube of the present invention, since the front beam lens and the main lens are formed with electron beam passing holes shared by several electron beams, the plurality of electron beams cross between the front beam lens and the main lens, and several electrons The beam is affected by the effects of the front lenses (such as coma aberrations and changes in the electron beam's behavior) as opposed to the effects of the main lens, so these effects can be offset by each other. By adopting the structure of the cathode ray tube of the present invention as described above, since the electron gun for the cathode ray tube of the present invention is provided, the electron beam can be offset by the action of the front lens and the electron beam by the action of the main lens, without increasing the light spot on the fluorescent surface. The change, therefore, significantly reduces the change in light spot. Embodiments of the invention The present invention provides an electron gun that emits several electron beams to the same-color phosphor of a cathode ray tube. The electron gun passes through the front lens and the main lens, and an electron beam passing hole shared by the electron beams is formed to make several An electron gun for a cathode ray tube in which an electron beam crosses between a front lens and a main lens. Further, the present invention is structured such that, in the above-mentioned electron gun for a cathode ray tube, a quadrupole lens is arranged near or at the intersection of a plurality of electron beams. In addition, the structure of the present invention is such that in the above-mentioned electron gun for a cathode ray tube, two electron beams are emitted to the same-color phosphor, a first electrode opposite to the cathode, and a second electrode provided on a fluorescent surface end of the first electrode. Medium, two electrical-8- This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 V. Description of the invention (6) One of the sub-beams through which the electron beam passing hole is large Aperture, the other of the two electron beams. The electron beam passing hole is a small aperture, where one electron beam and the other electron beam are switched to each other and emitted. In addition, in the structure of the present invention, in the above-mentioned electron gun for a cathode ray tube, the first electrode is divided so that each electron beam emitted is independent. Further, in the present invention, in the above-mentioned electron gun for a cathode ray tube, the first electrode is divided into two parts so that one of the two electron beams and the other are independent of each other. The invention provides a cathode ray tube, which is provided with an electron gun. The electron gun emits several electron beams to the phosphors of the same color of the cathode ray tube. A plurality of electron beam passing holes shared by the electron beams are formed on the front lens and the main lens, respectively. An electron beam crosses between the front lens and the main lens. In addition, the present invention is structured such that, in the above-mentioned cathode ray tube, a quadrupole lens is arranged near or at the intersection of the electron beams of the electron gun. In addition, the structure of the present invention is that, in the above-mentioned cathode ray tube, two electron beams are emitted to the same-color phosphor, a first electrode opposite to the cathode and a second electrode provided on the fluorescent surface end of the first electrode, The electron beam passing hole of one of the two electron beams has a large aperture, and the electron beam passing hole of the other of the two electron beams has a small aperture. One of the electron beams and the other electron beam are switched and emitted from each other. In addition, in the structure of the present invention, in the above-mentioned electron gun for a cathode ray tube, the first electrode is divided so that each electron beam emitted is independent. In addition, the structure of the present invention is that, among the above-mentioned electron guns for cathode ray tubes, the size of the paper is -9-, applicable to China National Standard (CNS) A4 (210 X 297 mm) 516066
第一電極被分割成兩部分,使兩個電子束之其中一個與另 一個彼此獨.立。 圖1顯示本發明一種實施形態之彩色陰極射線管用電子 槍的側面圖。此外,圖2顯示抽出圖j之彩色陰極射線管 用電子槍各電極重要部分的斜視圖。 該彩色陰極射線管用電子槍i 〇具有:對應於直線排列 之紅、綠、監的二個陰極K ( kr,KG,KB )、第一電極11、 第二電極12、第三電極13、第四電極14、第五電極15、 第六電極16、第七電極17、第八電極18。 第五電極15被分割成第5-1電極51、第5-2電極52、第 5-3電極53等三個。 第八電極1 8的後段上設有與其一體的會聚罩(c〇nvercap) 20。另外’圖1中的22表示用於供給電壓至電子槍1〇之電 極的心柱(Stem )。 第一電極11被分離成各陰KB,並在垂直方向 被分割成兩邵分,合計被分割成6個。被分割成6個的第 一電極 1 1 ( lIRi,11R2,11Gl,11(j2,11B!,11B2)上分別形 成有1個小的圓形電子束通過孔。 第二電極12在一體的板狀電極上,對各陰極kr,Kg, KB,分別形成有各2個,合計6個小的圓形電子束通過 孔。 如此,藉由在第一電極11與第二電極上,對各陰極KR, KG,KB,分另形成有各2個電子束通過孔,可自一個陰極 射出兩個電子束。 -10- :-—__ _^ 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 516066 A7 B7 五、發明説明(8 此外,藉由將第一電極丨丨分割成6部分,被分割成6部 分之各電極上可分別單獨輸入驅動信號,構成藉由陰極 K、第二電極12及各第一電極之電位差,以控制電子束之 射出量的驅動方式(所謂之Gi驅動方式)。 藉由將第一電極li分割成6部分,可形成在垂直方向v 上被分割成2部分之上下之第一電極之電子束通過孔的間 隔,另外,將各第一電極之電子束通過孔儘量配置在接近 前段透鏡及主透鏡中心軸的位置。 另外’第二電極12之電子束通過孔以第一電極11之電 子束通過孔相同的間距配置。 以第三電極13、第四電極14及第電極51形成前段 透鏡P L。 第5-1電極51的陰極κ端上設有三個電子束通過孔,另 外在陽極端設有共用的大孔。 此外’以第5-2電極52及第5-3電極53形成4重極透鏡 QL。如圖2所示,第5-3電極5 3的構造爲在縱長之矩形電 子束通過孔上下設置向第5-2電極5 2伸出的檐5 3 A。第5-2 電極5 2的電子束通過孔,在細縱長的矩形上下設有對應 於第5-3電極之檐53A的橫向孔,成I字狀。 另外’第5-3電極53的構造爲,安裝在第六電極16上, 供給有相同電位。 以第六電極16、第七電極17及第八電極18形成主透鏡 ML。主透鏡ML爲使R,G,B之三色電子束集束,照射在 陰極射線管螢光面的指定位置者。 -11 - 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7The first electrode is divided into two parts so that one of the two electron beams is independent of the other. Fig. 1 shows a side view of an electron gun for a color cathode ray tube according to an embodiment of the present invention. In addition, Fig. 2 is a perspective view showing important portions of each electrode of the electron gun for a color cathode ray tube shown in Fig. J. The electron gun for color cathode-ray tube i 〇 has two cathodes K (kr, KG, KB) corresponding to red, green, and monitors arranged in a line, a first electrode 11, a second electrode 12, a third electrode 13, and a fourth electrode. The electrode 14, the fifth electrode 15, the sixth electrode 16, the seventh electrode 17, and the eighth electrode 18. The fifth electrode 15 is divided into three such as a 5-1th electrode 51, a 5-2th electrode 52, and a 5-3th electrode 53. The rear section of the eighth electrode 18 is provided with a convergent cap 20 integrated therewith. In addition, 22 in FIG. 1 indicates a stem for supplying a voltage to an electrode of the electron gun 10. The first electrode 11 is separated into each negative KB, and is divided into two parts in the vertical direction, and is divided into six in total. The first electrode 1 1 (lIRi, 11R2, 11Gl, 11 (j2, 11B !, 11B2)) which is divided into six is formed with a small circular electron beam passing hole. The second electrode 12 is in an integrated plate. In the shape electrode, two cathodes, kr, Kg, and KB, are formed, each having a total of six small circular electron beam passing holes. Thus, the first electrode 11 and the second electrode are opposed to each cathode. KR, KG, KB are separately formed with two electron beam passing holes each, and two electron beams can be emitted from one cathode. -10-: -—__ _ ^ This paper size applies to China National Standard (CNS) A4 specifications ( 210X 297 mm) 516066 A7 B7 V. Description of the invention (8 In addition, by dividing the first electrode 丨 丨 into 6 parts, the driving signal can be input separately on each electrode divided into 6 parts, which constitutes the cathode K The driving method of the potential difference between the second electrode 12 and each of the first electrodes is to control the emission amount of the electron beam (the so-called Gi driving method). By dividing the first electrode li into 6 parts, it can be formed in the vertical direction v The interval between the electron beam passing holes of the first electrode divided into two parts above and below, and , Arrange the electron beam passing holes of each first electrode as close to the central axis of the front lens and the main lens as possible. In addition, the electron beam passing holes of the second electrode 12 are arranged at the same interval as the electron beam passing holes of the first electrode 11. The front lens PL is formed by the third electrode 13, the fourth electrode 14, and the first electrode 51. Three cathode beam passing holes are provided on the cathode κ end of the 5-1 electrode 51, and a common large hole is provided on the anode end. In addition, a quadrupole lens QL is formed by the 5-2 electrode 52 and the 5-3 electrode 53. As shown in FIG. 2, the 5-3 electrode 53 is structured to be arranged above and below the rectangular electron beam passage hole which is long The eaves 5 3 A projecting to the 5-2 electrode 5 2. The electron beam passing hole of the 5-2 electrode 5 2 is provided with a horizontal direction corresponding to the eaves 53A of the 5-3 electrode above and below the thin and long rectangle. The hole is formed in an I-shape. In addition, the structure of the 5th electrode 53 is mounted on the sixth electrode 16 and is supplied with the same potential. The main lens is formed by the sixth electrode 16, the seventh electrode 17, and the eighth electrode 18. ML. The main lens ML focuses the three-color electron beams of R, G, and B, and irradiates the specified position on the fluorescent surface of the cathode-ray tube. -11 - This paper scale applicable Chinese National Standard (CNS) A4 size (210 X 297 mm) 516066 A7 B7
這些第ττ電極16、第七電極17及第These ττ electrodes 16, seventh electrodes 17, and
1 8分別具有 予以分签的中間電壓。亦即,第七 卜束通過孔的電極板16Β,17Β, 16Α 及 16C、17Α 及 17C、18Α。 通過圖上未顯示之端子等,自 的電阻體2 3供給有將陽極電壓 Ρ,第七電極1 7爲供給有中間 電極的所謂中間電極。 因而,藉由在第七電極17上供給中間電壓,在第六電 極1 6上供給聚焦電壓,在第八電極丨8上供給陽極電壓, 可構成雙電勢型大口徑的主透鏡ML。 構成4重極透鏡 構成前段透鏡PL的各電極13,14,51 QL的各電極52 ’ 53,構成主透鏡ML的各電極16,17, 18,因透鏡直径’交大,對自同一陰極射出之上下兩條電子 束,電子束通過孔爲共用。 此外,本實施形態中調整通過第二電極12後之電子束 射入如段透知P L·及主透鏡μ L的位置,爲求消除前段透鏡 PL及主透鏡ML的彗形像差,對第二電極12焊接形成有 R’G’B各色之圓筒狀孔的電極板12A,以調節第二電極 1 2 -第三電極1 3間之凸透鏡的強度。 該電極板1 2 A的放大圖如圖3所示。利用該電極板丨2 A 的厚度D,可調節第二電極! 2 -第三電極1 3間之凸透鏡的 強度。 然而,前段透鏡P L因透鏡強度產生的彗形像差,若是 垂直方向之上端的電子束,因尉前段透鏡P L的中心軸係 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B718 have intermediate voltages to be signed separately. That is, the electrode plates 16B, 17B, 16A and 16C, 17A and 17C, 18A of the seventh beam passing hole. An anode voltage P is supplied from the resistors 23 to 3 through terminals or the like not shown in the figure, and the seventh electrode 17 is a so-called intermediate electrode to which an intermediate electrode is supplied. Therefore, by supplying an intermediate voltage to the seventh electrode 17, a focusing voltage to the sixth electrode 16, and an anode voltage to the eighth electrode 8, a double-potential type large-diameter main lens ML can be constructed. Each of the electrodes 13, 14, and 51 of the QL constituting the quadrupole lens constitutes each of the electrodes 52'53 of the QL, and each of the electrodes 16,17,18 of the main lens ML is exaggerated due to the lens diameter. The upper and lower electron beams are shared by the electron beam passing holes. In addition, in this embodiment, the position where the electron beam that has passed through the second electrode 12 is incident on PL and the main lens μ L is adjusted. In order to eliminate the coma aberration of the front lens PL and the main lens ML, The two electrodes 12 are welded to form electrode plates 12A with cylindrical holes of various colors R'G'B to adjust the strength of the convex lens between the second electrode 12 and the third electrode 13. An enlarged view of the electrode plate 1 2 A is shown in FIG. 3. With this electrode plate 2 A thickness D, the second electrode can be adjusted! 2-the intensity of the convex lens between the third electrode 1 and 3. However, the coma aberration caused by the lens strength of the front lens PL, if it is an electron beam at the upper end in the vertical direction, because the central axis of the front lens PL is based on the Chinese paper standard (CNS) A4 (210 X 297 mm) (Centimeter) 516066 A7 B7
、發明説明(1〇 ) 通過上端,因此將暈圈向下拉。 若是垂直方向之下端的電子束,則將暈圈向上拉。 因此,本實施形態係在前段透鏡PL,將位於垂直方向 之上端的電子束調節成電子束射入主透鏡ML之中心軸的 下端,使在主透鏡ML上吸收與在前段透鏡PL上吸收之藝 形像差相反方向的彗形像差。 同樣的,在前段透鏡PL,將位於垂直方向之下端的電 子束調節成電子束射入主透鏡ML之中心軸的上端。並調 節前段透鏡P L的透鏡強度,以消除前段透鏡p L與主透鏡 M L的彗形像差。 亦即,如後述之圖4Α所示,上下電子束的構造爲在前 段透鏡P L與主透鏡M L之間交叉。 圖4顯示陰極射線管之畫面中央部的各透鏡配置與通過 透鏡之電子束的軌道模型圖。圖4Α表示垂直方向,圖4Β 表示水平方向。 如圖4 Α所示,對相同的陰極,以間距ρ配置有第一電極 1 1的兩個電子束通過孔,兩個電子束SB 1,SB2向上下射 出。 兩個電子束SB 1,SB2的軌道因第二電極12 -第三電極13 間之凸透鏡L的作用而被修正,朝向圖4 A上以點線段所示 之透鏡系統的中心軸射入前段透鏡P L。 兩個電子束SB1,SB2通過前段透鏡PL後彼此交叉,在 主透鏡M L上通過透鏡系統之中心軸的另一端。The invention description (10) passes the upper end, so the halo is pulled down. If it is the electron beam at the lower end in the vertical direction, pull the halo upward. Therefore, in this embodiment, the electron beam located at the upper end of the vertical lens PL is adjusted so that the electron beam enters the lower end of the central axis of the main lens ML, so that it is absorbed by the main lens ML and absorbed by the front lens PL. The coma aberration in the opposite direction of the art aberration. Similarly, in the front lens PL, the electron beam located at the lower end in the vertical direction is adjusted so that the electron beam enters the upper end of the central axis of the main lens ML. The lens intensity of the front lens P L is adjusted to eliminate the coma aberration between the front lens P L and the main lens M L. That is, as shown in FIG. 4A described later, the upper and lower electron beams are structured to cross between the front lens P L and the main lens M L. Fig. 4 is a model diagram showing the arrangement of each lens in the center of the screen of the cathode ray tube and the orbit of the electron beam passing through the lens. FIG. 4A shows a vertical direction, and FIG. 4B shows a horizontal direction. As shown in FIG. 4A, for the same cathode, two electron beam passing holes of the first electrode 11 are arranged at a pitch ρ, and the two electron beams SB1 and SB2 are emitted upward and downward. The orbits of the two electron beams SB1 and SB2 are corrected by the convex lens L between the second electrode 12 and the third electrode 13 and are incident on the front lens toward the central axis of the lens system shown by the dotted line segment in FIG. 4A. PL. The two electron beams SB1, SB2 cross each other after passing through the front lens PL, and pass through the other end of the central axis of the lens system on the main lens M L.
藉由此種構造,由於各電子束SB 1,SB2在前段透鏡P L -13- 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐)With this structure, each of the electron beams SB 1, SB2 is at the front lens P L -13- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm)
裝 訂Binding
516066 A7516066 A7
516066 A7 _ B7 五、發明説明(12 ) 向V上產生凹透鏡作用,在圖5B所示的水平方向Η上產生 凸透鏡作用.。 如圖5Α所示,本實施形態藉由在位於前段透鏡pl與主 透鏡ML間之垂直方向V上下之電子束SB 1,SB2的交叉點 上配置4重椏透鏡QL,於通過4重極透鏡QL時,由於兩 個電子束SB 1,SB2通過透鏡系統的中心軸,因此可避免 自4重極透鏡Q L吸收像差。 並可藉由4重極透鏡QL,在垂直方向V及水平方向η上 產生4重極作用,可在畫面角落部實現良好的光點特性。 另外’ 4重極透鏡QL的位置,亦可不與上下之電子束 SB 1,SB2的交叉點一致,若配置在交叉點附近,同樣的 可避免自4重極透鏡Q L吸收像差。 另外,在畫面中央部,由於4重極透鏡QL無作用,因此 縱使設置4重極透鏡Q L,在畫面中央部,對電子束SB 1, SB2產生的透鏡作用僅爲圖4所示的三個透鏡L,PL,ML。 採用上述實施形態,藉由使前段透鏡PL與主透鏡ML間 之兩個電子束SB 1,SB2交叉,可抵銷前段透鏡P L之彗形 像差的作用與主透鏡M L之彗形像差的作用。 再者,第一電極11及第二電極丨2上,藉由調整射入前 段透鏡PL與主透鏡ML之兩個電子束SB 1,SB2的執道, 可使前段透鏡P L與主透鏡M L的彗形像差抵銷,形成無彗 形像差的構造。 而對應於兩個電子束SB 1,SB2的各個電子束通過孔,雖 不在前段透鏡P L與主透鏡ML的中心上,但是,如先前之 -15- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 516066 A7 ________B7 五、發明説明(13 ) 單束電子槍,與在前段透鏡pL與主透鏡]^]1的中心上,第 一電極11足電子束通過孔一致的電子槍同樣的,可形成 良好的光點尺寸。 此外’由於電子束軌道不因驅動電壓的改變而偏差,因 此’不致引起電子束射達螢光面(螢光屏)之鄰近螢光體等 的党度偏差、色彩偏差。 再者,由於在兩個電子束SB 1,SB2的交叉點或其附近配 置4重極透鏡ql,因此,兩個電子束SB1,SB2通過4重極 透鏡Q L的中心附近,在畫面角落部產生均衡的4重極作 用。 因此,畫面角落部上可避免因4重極透鏡QL使光點尺寸 變大,而造成聚焦惡化。 因而’藉由具備本實施形態之彩色陰極射線管用電子槍 1 〇,構成彩色陰極射線管,可獲得光點尺寸小的良好圖 像,同時可以兩倍速率進行掃描,使用壽命亦加倍。 例如,藉由信號處理使兩個電子束所顯示的圖像重疊 時’縱使各電子束之電流量與先前相同,亦可使所顯示之 圖像的亮度加倍。此外,若使圖像的亮度與先前相同時' 則各電子束的電流量減半即可實施高精細顯示。因此,藉 由使用本實施形態之彩色陰極射線管用電子槍丨〇,可在 顯示器及電視影像接收機等上實現高精細顯示。 以下’實際製作本實施形態之彩色陰極射線警電子搶 1 〇 ’並檢討其特性。 首先,圖6顯示本實施形態之彩色陰極射線管用電子槍 -16- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(14 ) 1 0上,前段透鏡P L之電子束通過孔徑設定爲5 mm時,使 第二電極12之電極板12A之厚度D改變時,與彗形像差的 關係。 依據圖6可知,第二電極12之電極板12A的厚度D爲 0.65 mm時的彗形像差爲零。 另外,彗形像差的容許量如設定爲± 0.05 kV。 此外,圖7顯示本發明之多束電子槍(圖1之實施形態之 彩色陰極射線管用電子槍1 0 )、先前之單束電子槍、與作 爲比較之不使同一陰極之數個電子束交叉之構造的多束電 子槍,比較其電流量與光點尺寸之關係的結果。 依據圖7可知,本發明之多束電子槍的光點尺寸與先前 之單束電子槍的光點尺寸比較,兩者概等。 另外,圖中虛線所示之比較例的多束電子槍的光點尺寸 變大。 亦即可知本發明之多束電子槍可形成良好的光點尺寸。 此外,圖8顯示本發明之多束電子槍(圖1之實施形態之 彩色陰極射線管用電子槍1 0 ),與作爲比較之不使同一陰 極之數個電子束交叉之構造的多束電子槍,比較其通過位 於弟一電極11及第二電極1 2之垂直方向下端之電子束通 過孔之電流量與螢光面之光點位置之關係的結果。 依據圖8可知,本發明之多束電子槍縱使電流量改變, 光點位置也不改變。 另外,圖中虛線所示之比較例之多束電子槍的光點位置 則改變。 -17- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(15 ) 亦即,可知由於本發明之多束電子槍縱使電流量改變, 光點位置也不改變,因此不致發生色彩偏差及亮度偏差。 繼續説明本發明的其他實施形態。 圖1及圖2所示之上述實施形態的構造,係採用將第一 電極1 1分割成6部分,調節第一電極電位以進行驅動的 G1驅動方式,而本發明之陰極射線管用電子槍亦可採用 調整陰極K之電位以進行驅動之陰極驅動方式。此時如下 所示。 圖9爲本發明其他實施形態之抽出顯示彩色陰極射線管 用電子槍之重要部分之電極構造的斜視圖。 裝 圖9顯示陰極K、第一電極11、第二電極12及其電極板 1 2 A 0 本實施形態藉由採用陰極驅動方式,第一電極11以1片 電極構成。而對各陰極Kr,Kg,KB,分別形成有縱向之各 兩個電子束通過孔。516066 A7 _ B7 V. Description of the invention (12) A concave lens effect is generated toward V, and a convex lens effect is generated in the horizontal direction 所示 shown in FIG. 5B. As shown in FIG. 5A, in this embodiment, a quadruple lens QL is arranged at the intersection of the electron beams SB1 and SB2 in the vertical direction V between the front lens pl and the main lens ML, and the quadrupole lens is passed through At QL, since the two electron beams SB1 and SB2 pass through the central axis of the lens system, absorption of aberrations from the quadrupole lens QL can be avoided. In addition, the quadrupole lens QL can generate a quadrupole effect in the vertical direction V and the horizontal direction η, and can achieve good light spot characteristics at the corners of the screen. In addition, the position of the quadrupole lens QL may not coincide with the intersection of the upper and lower electron beams SB1 and SB2. If it is arranged near the intersection, the absorption of aberration from the quadrupole lens QL can be avoided in the same manner. In addition, since the quadrupole lens QL has no effect in the center of the screen, even if the quadrupole lens QL is provided, in the center of the screen, the lens effect on the electron beams SB 1 and SB2 is only three as shown in FIG. 4. Lenses L, PL, ML. According to the above embodiment, by intersecting the two electron beams SB1, SB2 between the front lens PL and the main lens ML, the effect of the coma aberration of the front lens PL and the coma aberration of the main lens ML can be offset. effect. In addition, on the first electrode 11 and the second electrode 丨 2, by adjusting the execution of the two electron beams SB1 and SB2 that are incident on the front lens PL and the main lens ML, the front lens PL and the main lens ML can be adjusted. The coma aberration is canceled out to form a structure without coma aberration. The electron beam passage holes corresponding to the two electron beams SB1 and SB2 are not located at the center of the front lens PL and the main lens ML, but, as in the previous -15- this paper standard applies to China National Standard (CNS) A4 Specifications (210X297 mm) 516066 A7 ________B7 V. Description of the invention (13) The single-beam electron gun is the same as the electron gun with the first electrode 11-foot electron beam passing hole in the center of the front lens pL and the main lens] ^] 1. , Can form a good spot size. In addition, since the orbit of the electron beam does not deviate due to a change in the driving voltage, it does not cause deviations in color and color deviation of the electron beams that reach the fluorescent surface (fluorescent screen) and the adjacent phosphors. Furthermore, since the quadrupole lens ql is arranged at or near the intersection of the two electron beams SB1 and SB2, the two electron beams SB1 and SB2 pass near the center of the quadrupole lens QL and are generated at the corner of the screen. Balanced quadrupole effect. Therefore, the corners of the screen can avoid focusing deterioration due to the spot size being increased by the quadrupole lens QL. Therefore, by including the color cathode ray tube electron gun 10 according to this embodiment, a color cathode ray tube can be constructed, and a good image with a small spot size can be obtained. At the same time, scanning can be performed at double speed, and the service life is doubled. For example, when the images displayed by the two electron beams are superimposed by signal processing ', even if the current amount of each electron beam is the same as before, the brightness of the displayed image can be doubled. In addition, if the brightness of the image is the same as before, the high-definition display can be implemented by reducing the current amount of each electron beam by half. Therefore, by using the electron gun for a color cathode ray tube according to this embodiment, a high-definition display can be realized on a display, a television image receiver, and the like. The following "actually make the color cathode-ray police electron of this embodiment" and review its characteristics. First, FIG. 6 shows the electron gun for a color cathode ray tube of the present embodiment-16. This paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 V. Description of the invention (14) 1 0, When the electron beam passing aperture of the front lens PL is set to 5 mm, the relationship between the thickness D of the electrode plate 12A of the second electrode 12 and the coma aberration is changed. According to FIG. 6, when the thickness D of the electrode plate 12A of the second electrode 12 is 0.65 mm, the coma aberration is zero. The allowable amount of coma aberration is set to ± 0.05 kV. In addition, FIG. 7 shows the structure of the multi-beam electron gun of the present invention (the electron gun 10 for a color cathode ray tube in the embodiment of FIG. 1), the conventional single-beam electron gun, and a structure in which several electron beams of the same cathode are not crossed as a comparison. Multi-beam electron gun, the result of comparing the relationship between the amount of current and the spot size. According to Fig. 7, it is known that the spot size of the multi-beam electron gun of the present invention is compared with the spot size of the previous single-beam electron gun, and the two are equal. In addition, the spot size of the multi-beam electron gun of the comparative example shown by the dotted line in the figure becomes larger. That is to say, the multi-beam electron gun of the present invention can form a good spot size. In addition, FIG. 8 shows the multi-beam electron gun of the present invention (the electron gun 10 for a color cathode ray tube according to the embodiment of FIG. 1) and a multi-beam electron gun having a structure in which several electron beams of the same cathode are not crossed as a comparison. The result of the relationship between the amount of current passing through the hole of the electron beam located at the lower ends of the first electrode 11 and the second electrode 12 in the vertical direction and the position of the light spot on the fluorescent surface. It can be seen from FIG. 8 that even if the current amount of the multi-beam electron gun of the present invention changes, the position of the light spot does not change. In addition, the spot positions of the multi-beam electron gun of the comparative example shown by the dotted line in the figure are changed. -17- This paper size is in accordance with Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 V. Description of the invention (15) That is, it can be known that due to the multi-beam electron gun of the present invention, even if the current amount changes, the light spot The position does not change, so color deviation and brightness deviation do not occur. The description will continue to other embodiments of the present invention. The structure of the above embodiment shown in FIGS. 1 and 2 is a G1 driving method in which the first electrode 11 is divided into six parts and the potential of the first electrode is adjusted for driving. The electron gun for a cathode ray tube of the present invention may also be used. A cathode driving method is adopted in which the potential of the cathode K is adjusted for driving. This is shown below. Fig. 9 is a perspective view showing an electrode structure showing an important part of an electron gun for a color cathode ray tube according to another embodiment of the present invention. FIG. 9 shows the cathode K, the first electrode 11, the second electrode 12, and its electrode plate. In this embodiment, the cathode driving method is adopted, and the first electrode 11 is composed of one electrode. For each of the cathodes Kr, Kg, and KB, two longitudinal electron beam passing holes are formed.
另外,圖上未顯示之第三電極以後,則與圖2所示之上 述實施形態同樣的,在前段透鏡P L與主透鏡M L之間,使 自同一陰極射出的兩條電子束交叉。 本實施形態之陰極驅動方式亦與上述實施形態之G1驅 動方式時同樣的’藉由调郎第二電極-第二電極間的凸透 鏡強度,可抵銷前段透鏡PL及主透鏡ML的彗形像差,此 外,縱使電流量改變,亦可使電子束的軌道不改變。 圖1 0爲顯示本發明另外實施形態之抽出顯示彩色陰極 射線管用電子槍重要部分之電極構造的斜視圖。 -18- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 ____ B7 五、發明説明(16 ) 圖10中亦顯示陰極K、第一電極11、第二電極12及其 電極板1 2 A.。 本實施形態亦藉由採用陰極驅動方式,第一電極 片電極構成。而對各陰極KR,KG,κΒ,分別形成有橫向之 各兩個電子束通過孔。 藉此,在第一電極11及第二電極12上形成有橫向排列 的6個電子束通過孔。 另外,圖上未顯示之第三電極以後,則與圖2所示之上 述實施形態同樣的,在前段透鏡p L與主透鏡M L之間,使 自同一陰極射出的兩條電子束交叉。 本實施形態的6個電子束雖採橫向排列,不過圖上未顯 示之第三電極以後,則與圖2所示之上述實施形態同樣 的’對各陰極KR ’ KG,ΚΒ各設置三個電子束通過孔。 藉此,如同設置6個電子束通過孔時,透鏡不因各電子 束通過孔而變小,可減低透鏡像差對電子束的影響。 因此,可形成良好的光點尺寸。 上述各實施形態中,雖將本發明應用在對r,g,b三色 分別設置陰極的彩色陰極射線管用電子槍,不過本發明若 爲對一個陰極射出數個電子束的多束電子槍,亦可應用在 其他構造之陰極射線管用電子槍及陰極射線管上。 例如,亦可將本發明應用在單色的陰極射線管(黑白及 單色、投影機用的各色陰極射線管等),可構成在前段透 鏡與主透鏡之間使數個電子束交叉的多束電子槍。 此時,由於不需要4重極透鏡,因此畫面角落部亦採圖 -19- 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 五、發明説明(17 ) 4所示的構造。 此外,上述各實施形態係捩 束的構迕,m旅/ 對一個陰椏射出兩個電子 采的構扠,不過本發明亦可採用對一 卞 電子束的構造,此時,使二個 r丨出二個以上 主透鏡之間交叉。 ㈣Η在前段透鏡與 再者,本發明並不限定於自 亦可適用於對陰極射線管之同 構造,當然亦可適用於對應於 分別獨立之陰極的構造。 一個陰極射出數個電子束, 色螢光體射出數個電子束的 %極之各電子束通過孔設置 此外’本發心可適用於具備上述之高亮度模式與低亮 度、高精細模式兩種顯示模式,可顯示電視播放之影像與 電腦顯π器用之圖像的彩色陰極射線管及其電子槍。 此時之實施形態如下所示。 圖11爲本發明其他實施形態之抽出彩色陰極射線管用 電子槍枝重要部分之電極構造的斜視圖。 圖11上顯示陰極Κ、第一電極^、第二電極12及其電 極板1 2 Α。 本實施形態與圖2所示之彩色陰極射線管用電子槍同樣 的,第一電極11被分割成6個(llRl,11R2, 11Gi,11CV 1%,11B2) 〇 藉由將第一電極11分割成6部分,與圖2之彩色陰極射 線管用電子槍同樣的,構成藉由陰極Κ、第二電極12及各 第一電極之電位差’以控制電子束之射出量的驅動方式 (所明之G1驅動方式)。此因隔開上下電子束通過孔的間 -20- 本紙張尺度適用中國國家標準(CNS) Α4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(18 ) 隔,且使各第一電極之電子束通過孔儘量接近前段透鏡 P L及主透鏡M L之中心軸的位置。 但是,本實施形態被分割成6部分的第一電極中,上端 之電極(llRi,11G!,11Β!等三個)的電子束通過孔形成大 圓孔,下端之電極(11R2,11G2,11B2等三個)的電子束通 過孔形成小圓孔。 此外,第二電極1 2之電子束通過孔亦對應於相對之第 一電極的電子束通過孔,上端的三個電子束通過孔形成大 圓孔,下端之三個電子束通過孔形成小圓孔。 此與被分割成6部分之第一電極1 1之6個各電極之電子 束通過孔大小及第二電極1 2之6個電子束通過孔大小相同 之圖2的電子槍不同。 電子槍的其他構造則與圖2相同,因此省略其重複説 明。 由於本實施形態之第一電極11及第二電極12上端的電 子束通過孔爲大圓孔,因此增加通過之電子束的量,亦即 電流量(例如,通常電流爲1 m A)可提高亮度。 因此,藉由上端孔徑大的電子束通過孔,可對應於大電 流,可進行高亮度模式的顯示。 另外,由於第一電極11及第二電極12下端的電子束通 過孔爲小圓孔,因此減少通過之電子束的量,亦即電流量 (例如,通常電流爲0.3 mA)可抑制亮度,同時縮小螢光面 之電子束的光點尺寸,可進行高精細的圖像顯示。 因此,藉由下端孔徑小的電子束通過孔,可縮小光點尺 -21 - 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五、發明説明(19 ) 寸,可進行低亮度、高精細模式的顯示。 亦即,本實施形態的構造爲對同色螢光體自上下射出有 兩個電子束,於與陰極K相對之第一電極及設置於該第一 電極11之螢光面端的第二電極12上,兩個電子束中上端 之電子束通過之電子束通過孔爲大孔徑,兩個電子束中下 端之電子束通過之電子束通過孔爲小孔徑。 其中,尤其是第一電極11被分割成6邵分,使射出之6 個電子束各自獨立。 高亮度模式與低亮度、高精細模式之兩種顯示模式的構 造爲,分別形成各顯示模式的畫面,藉由切換畫面的構造 (畫面切換顯示),或在各顯示模式用的區域上區分畫面來 進行掃描,同時在各區域切換兩個顯示模式的構造(區域 切換顯示)以進行切換。 再者,上述任何一種切換顯示時,均僅使對同色螢光體 之上下兩個電子束中的其中一個電子束射出,照射在螢光 面上,而不使另一個電子束射出。因而,於切換顯示模式 時,係採取交互切換,亦即交換射出之電子束與不射出之 電子束的構造。 具體而言,由於本實施形態係採用G 1驅動方式,因此 將分別供給至位於高亮度模式用之上端三個第一電極 llRi,llGi,llBi的電壓,與分別供給至位於低亮度、高 精細模式用之下端三個第一電極11R2,11G2,11B2的電 壓,於顯示之其中一個模式用時,做爲電子束射出電壓, 於另一模式用時,做爲電子束不射出電壓(如接近於陰極 -22- 本紙張尺度適用中國國家標準(CNS) A4規格(21〇x 297公釐) 516066 A7 B7 五、發明説明(20 ) 電壓-250V)。因而於切換顯示模式時,改變供給至各第一 電極的電壓.,來切換射出之電子束。 如此’由於本實施形態的第一電極1 1被分割成6邵分, 對高亮度模式用與低亮度、高精細模式用,分別具有獨立 的驅動系統,因此可進行上述的區域切換顯示,同時在一 個畫面上顯示兩種顯示模式。 此外,具備本實施形態之彩色陰極射線管用電子槍,構 成陰極射線管時,陰極射線管之畫面中央部之各透鏡的配 置與通過透鏡之電子束的軌道模型圖,與上述實施形態之 彩色陰極射線管用電子槍之圖4所示的模型圖相同。 亦即,在前段透鏡P L與主透鏡M L之間,使兩個電子束 SB1,SB2 交叉。 因此,與上述各實施形態同樣的,可防止因彗形像差產 生暈圈,造成光點尺寸變大,及電子束軌道隨電流量之變 化而改變,造成光點位置偏差的現象。 另外,圖4狀態下,特別使通過主透鏡ML的兩個電子束 SB 1,SB2分別照射在螢光面的不同位置上。因而,可藉 由圖像處理來處理兩處的信號’同時掃描兩處。 而本實施形態,由於係將兩個電子束SB 1,SB2分配至高 亮度模式與低亮度、高精細模式,切換兩個顯示模式,無 法藉由圖像處理來處理兩處的信號^同時掃描兩處^因 此,須使兩個電子束SB 1,SB2照射在螢光面的同一位置 上。 因此,採用並非在陰極射線管頸部外側設置致偏電磁 -23- 本纸張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 516066 A7 B7 五 發明説明( 21 鐵,而是在陰極K端設置線圈(圖上未顯示),藉由該線圈 形成外部4重極透鏡,藉由該外部4重極透鏡,使上下兩 個電子束SB1,SB2照射在勞光面之同一位置上的構造。 藉此,使照射位置一致。 亦即’由於R,G,B三色電子束藉由主透鏡ml集束, 藉由主透鏡ML使6條電子束集中在一處。 此外’本實施形態之陰極射線管之畫面角落部之各透鏡 配置與通過透鏡之電子束之軌道的模型圖亦與圖5同樣 的’採用在兩個電子束SB 1,SB2叉叉點或交叉點附近配 置4重極透鏡Q L的構造。 因此,兩個電子束SB1,SB2通過4重極透鏡ql時,可 避免受到4重極透鏡Q L之像差的影響,發揮4重極作用, 在晝面角落部實現良好的光點特性。 採用上述之本實施形態時,與上述各實施形態同樣的, 藉由在前段透鏡PL與主透鏡ML之間使兩個電子束sb 1, SB2交叉,可抵銷前段透鏡P L之彗形像差的作用與主透鏡 ML之彗形像差的作用。 再者,可於第一電極11及第二電極12上,藉由調整射 入前段透鏡PL與主透鏡ML之兩個電子束sb 1,SB2的軌 道,使前段透鏡PL與主透鏡ML的彗形像差抵銷,形成無 彗形像差的構造。 因而,對應於兩個電子束SB 1,SB2之各個電子束通過孔 雖不在前段透鏡PL與主透鏡ML的中心,但是與先前之單 束電子槍之第一電極11之電子束通過孔與前段透鏡P L與 -24- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) A7 B7 ) 516066 五、發明説明(22 主透鏡ML中心一致之電子槍同樣的,可形成良好的光點 尺寸。 此外,由於電子束軌道不因驅動電壓的改變而偏差,因 此,不致引起電子束射達螢光面(螢光屏)之鄰近螢光體等 的亮度偏差、色彩偏差。 再者’由於在兩個電子束SB 1,SB2的交叉點或其附近配 置4重極透鏡QL,因此,兩個電子束SB1,SB2通過4重極 透鏡Q L的中心附近,在畫面角落部產生均衡的4重極作 因此,畫面角落部上可避免因4重極透鏡QL使光點尺寸 變大,而造成聚焦惡化。 因而,藉由具備本實施形態之彩色陰極射線管用電子 槍,構成彩色陰極射線管,可獲得光點尺寸小的良好圖 像,同時可進行高亮度模式顯示與低亮度、高精細模式顯 示。 此外,由於第一電極1 1被分割成6部分,並藉由G 1驅 動方式驅動,因此可上下切換射出的電子束,藉由晝面上 所區分的區域,可切換兩個顯示模式。亦即,可在一個畫 面上並存兩種顯示模式。 此外,本實施形態係在第一電極1 1及第二電極1 2上, 擴大上端的電子束通過孔,縮小下端的電子束通過孔。亦 可將上下顚倒,縮小上端的電子束通過孔,擴大下端的電 子束通過孔。 以下,實際製作本實施形態之彩色陰極射線管電子槍, -25- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公爱) 516066 A7 B7 五、發明説明(23 ) 並檢討其特性。 首先,檢討本實施形態之彩色陰極射線管用電子槍上, 前段透鏡P L之電子束通過孔徑設定爲5 mm時,使第二電 極1 2之電極板1 2 A之厚度D改變時,與彗形像差的關係。 此時亦與圖6所示之圖2之彩色陰極射線管用電子槍同樣 的,第二電極12之電極板12A的厚度D爲0.65 mm時的彗 形像差爲零。 另外,該電子槍之彗形像差的容許量亦設定爲土 0.05 kV 〇 此外,比較本實施形態之彩色陰極射線管用電子槍與先 前之單束電子槍(先前例)之電流量與光點尺寸的關係。對 應於高亮度模式(T V模式)而增加電流量時的結果如圖1 2 所示,對應於低亮度、高精細模式(P C模式)而減少電流 量時的結果如圖1 3所示。 依據圖12及圖13可知,不論在何種電流量,本實施形 態之彩色陰極射線管用電子槍的光點尺寸與先前之單束電 子槍的光點尺寸比較均概等。 亦即,可知本實施形態之彩色陰極射線管用電子槍可形 成良好的光點尺寸。 此外,圖14顯示本實施形態之彩色陰極射線管用電子 槍之通過位於第一電極11及第二電極12之垂直方向下方 之電子束通過孔的電流量,與勞光面之光點位置的關係。 但是,該圖1 4係顯示無設置於上述頸部外部之線圈產生4 重極作用(外部4重極透鏡)狀態下的光點位置。 -26- 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 516066 A7 B7 五、發明説明(24 ) 依據圖14可知,本實施形態之彩色陰極射線管用電子 槍縱使電流量改變,光點位置也不改變,且不發生色彩偏 差與亮度偏差。 再者,在使外部4重極透鏡作用的狀態下,不論電流量 爲何,光點位置均爲0,亦即兩個電子束的中心軸一致。 繼續,圖1 5顯示本發明另外實施形態之抽出彩色陰極 射線管用電子槍重要部分之電極構造的斜視圖。圖1 5顯 示陰極K、第一電極11、第二電極12及其電極板12A。 本實施形態中,特別是第一電極1 1被分割成上下兩部 分,形成兩個電極11U及11D,對R,G,B三色之螢光體 所對應的電子束共用,且對同色螢光體所對應的兩個電子 束彼此獨立。 被分割成兩部分之上端之第一電極1 1 U的三個電子束通 過孔形成大孔徑,下端之第一電極11D的三個電子束通過 孔形成小孔徑。 因此,上端之第一電極11U對應於高亮度模式,下端之 第一電極1 1 D對應於低亮度、高精細模式,可進行兩種顯 示模式的顯示。而高亮度模式的通常電流如爲1 mA,低 亮度、高精細模式的通常電流如爲0.3 mA。 此外本實施形態之前段透鏡P L及主透鏡ML的電子束通 過孔亦對同色螢光體的兩個電子束共用,且使兩個電子束 在前段透鏡P L與主透鏡M L之間交叉。 因而,4重極透鏡配置在兩個電子束的交叉點或其附 近0 -27- 本纸張尺度適用中國國家標準(CNS) Α4規格(210X 297公釐) 516066 A7 B7 五、發明説明(25 ) 第二電極1 2等其他構造則與圖1 1所示之上述實施形態 相同,因此省略其重複説明。 本實施形態由於各第一電極11U,11D分別對R,G,B三 色螢光體所對應的電子束共用,因此藉由供給驅動信號至 陰極K的陰極驅動方式來驅動。 因此,兩種顯示模式顯示之切換的具體實施例如下。 於進行高亮度模式顯示時,在上端的第一電極11U上供 給0V,在下端的第一電極11D上供給-250V,在陰極K上 供給驅動信號。藉此,上端的電子束射出,並照射在螢光 面上,下端的電子束則不射出。 於進行低亮度、高精細模式顯示時,在上端的第一電極 1 1U上供給- 250V,在下端的第一電極11D上供給0V,在 陰極K上供給驅動信號。藉此,下端的電子束射出,並照 射在螢光面上,上端的電子束則不射出。 而於切換顯示模式時,藉由切換供給至各第一電極11U 及1 1 D的電壓,使對應於同色螢光體的兩個電子束中,射 出電子束與不射出電子束彼此切換。 如此,進行高亮度模式顯示與低亮度、高精細模式顯 示0 採用上述之本實施形態,與上述各實施形態同樣的,可 形成良好的光點尺寸,可避免引起亮度偏差及色彩偏差。 此外,採用本實施形態,藉由使第一電極1 1被分割成 兩部分中之上端電極11U的電子束通過孔形成大孔徑,使 下端之'電極1 1 D的電子束通過孔形成小孔徑,切換供給至 -28- 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 516066 A7 B7 五、發明説明( 26 ) 各第 一 電極 11U及11D的電壓,可切換高亮度模式顯示 與 低亮 度 、高 精細模式顯示。 因 此 ,例 如藉由切換供給至各第一電極11U及 1 1D之 壓, 可 切換 高亮度模式的顯示畫面與低亮度、高 精細模 式 的顯 示 畫面 以進行顯示。 因 而 ,藉 由具備本實施形態之彩色陰極射線 管用電 子 槍, 構成彩 色陰極射線管,可獲得光點尺寸小 的良好 圖 像, 同 時可 進行高亮度模式顯示與低亮度、高精 細模式 顯 不 ° 此 外 ,由 於第一電極1 1被分割成兩部分,並 藉由陰 極 驅動 方 式驅 動,因此可上下切換射出的電子束, 切換兩 個 顯示 模 式的 顯示畫面。 此 外 ,亦 可將本實施形態的構造上下顚倒,縮 小上端 的 電子 束 通過孔,擴大下端的電子束通過孔。 本發 明並 不限定於上述的實施形態,在不脱離 本發明 之 要旨 的 範圍 内,可採用其他各種構造。 發明 之 效果 採 用 上述 本發明,在前段透鏡與主透鏡上形成 有數個 子束所共用 的電子束通過孔,藉由使數個電子束在前段透 鏡與 主 透鏡 之間交叉,可抵销數個電子束受到各前段透 鏡 的作 用 (如彗形像差及電子束的軌道改變)與受到 主透鏡 的 作用 因此 可大幅減低對電子束之光點的影響, 形成良好 的光 點 尺寸 0 此 外 ,藉 由使數個電子束在前段透鏡與主透 鏡之間 交 -29- 本紙張尺度適用中國國家標準(CNS) A4規格(210 x 297公釐) 516066In addition, after the third electrode not shown in the figure, the two electron beams emitted from the same cathode are crossed between the front lens P L and the main lens M L as in the above embodiment shown in FIG. 2. The cathode driving method of this embodiment is also the same as that of the G1 driving method of the above embodiment. 'The convex lens strength between the second electrode and the second electrode can be used to offset the coma of the front lens PL and the main lens ML. In addition, even if the amount of current is changed, the orbit of the electron beam can be kept unchanged. Fig. 10 is a perspective view showing an electrode structure of an important part of an electron gun for a color cathode ray tube according to another embodiment of the present invention. -18- This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 ____ B7 V. Description of the invention (16) Figure 10 also shows the cathode K, the first electrode 11, and the second electrode 12 And its electrode plate 1 2 A .. This embodiment is also constituted by adopting a cathode driving method and a first electrode sheet electrode. For each of the cathodes KR, KG, and κB, two electron beam passing holes in the lateral direction are formed. Thereby, six electron beam passing holes arranged in the lateral direction are formed in the first electrode 11 and the second electrode 12. In addition, after the third electrode not shown in the figure, the two electron beams emitted from the same cathode are intersected between the front lens p L and the main lens M L in the same manner as in the above embodiment shown in FIG. 2. Although the six electron beams of this embodiment are arranged horizontally, but after the third electrode not shown in the figure, three electrons are provided for each of the cathodes KR, KG and KB, which are the same as the embodiment shown in FIG. 2. The beam passes through the hole. This makes it possible to reduce the influence of lens aberrations on the electron beams, as when the six electron beam passing holes are provided, and the lens is not reduced by the electron beam passing holes. Therefore, a good spot size can be formed. In the above embodiments, although the present invention is applied to an electron gun for a color cathode ray tube in which cathodes are respectively provided for three colors of r, g, and b, if the present invention is a multi-beam electron gun that emits several electron beams to one cathode, It is applied to the electron guns and cathode ray tubes of cathode ray tubes of other structures. For example, the present invention can also be applied to monochromatic cathode ray tubes (black and white and monochromatic, various color cathode ray tubes for projectors, etc.), and a multi-electron beam can be configured to cross between a front lens and a main lens. Beam electron gun. At this time, since the quadrupole lens is not needed, the corners of the screen are also taken as shown in Figure -19- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) V. Description of the invention (17) 4 structure. In addition, in each of the above embodiments, the structure of the beam, m bristle / shoots two electrons to a cathode, but the present invention can also adopt the structure of a beam of electrons, at this time, two r丨 Cross between two or more main lenses. (1) In the front lens and further, the present invention is not limited to the same structure as that of the cathode ray tube, and of course, it can also be applied to the structure corresponding to separate cathodes. One cathode emits several electron beams, and the color phosphor emits several electron beams. The% poles of each electron beam are set through holes. In addition, the original core can be applied to both the high-brightness mode, the low-brightness mode, and the high-definition mode. Display mode, a color cathode ray tube and its electron gun that can display the images broadcast by television and the images used by computer monitors. The embodiment at this time is shown below. Fig. 11 is a perspective view showing an electrode structure of an important part of an extracted electron gun for a color cathode ray tube according to another embodiment of the present invention. FIG. 11 shows the cathode K, the first electrode ^, the second electrode 12 and its electrode plate 12A. This embodiment is the same as the electron gun for a color cathode ray tube shown in FIG. 2, the first electrode 11 is divided into six (11R1, 11R2, 11Gi, 11CV 1%, 11B2). 〇 By dividing the first electrode 11 into 6 In part, similar to the electron gun for a color cathode ray tube of FIG. 2, a driving method (the G1 driving method as shown) that controls the amount of emitted electron beams by the potential difference ′ of the cathode K, the second electrode 12 and each of the first electrodes is configured. Because of this, the space between the upper and lower electron beams passing through the hole is -20- This paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) 516066 A7 B7 V. Description of the invention (18) The electron beam passing holes of the electrodes are as close as possible to the positions of the central axes of the front lens PL and the main lens ML. However, in this embodiment, the first electrode is divided into 6 parts, and the electron beams of the upper electrodes (llRi, 11G !, 11B !, etc.) form large circular holes through the holes, and the lower electrodes (11R2, 11G2, 11B2, etc.) (3) The electron beam passes through the holes to form small circular holes. In addition, the electron beam passing hole of the second electrode 12 also corresponds to the electron beam passing hole of the opposite first electrode. The three electron beam passing holes at the upper end form a large circular hole, and the three electron beam passing holes at the lower end form a small circular hole. . This is different from the electron gun of FIG. 2 in which the size of the electron beam passing holes of the six first electrodes 11 to 12 and the size of the six electron beam passing holes of the second electrode 12 to 12 are the same. The other structure of the electron gun is the same as that of FIG. 2 and therefore, the repeated description is omitted. Since the electron beam passing holes at the upper ends of the first electrode 11 and the second electrode 12 in this embodiment are large circular holes, increasing the amount of passing electron beams, that is, the amount of current (for example, usually a current of 1 m A) can improve the brightness. . Therefore, the electron beam passing through the hole with a large aperture at the upper end can correspond to a large current and display in a high-brightness mode. In addition, since the electron beam passing holes at the lower ends of the first electrode 11 and the second electrode 12 are small circular holes, reducing the amount of electron beams passing through, that is, the amount of current (for example, usually 0.3 mA) can suppress brightness, and By reducing the spot size of the electron beam on the fluorescent surface, high-definition image display can be performed. Therefore, the light point rule can be reduced by passing the electron beam with a small aperture at the lower end through the hole. -21-This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 V. Description of the invention (19) Inch, can display in low brightness and high definition mode. That is, the structure of the present embodiment is such that two electron beams are emitted from the same color phosphor from above and below, on the first electrode opposite to the cathode K and the second electrode 12 provided on the fluorescent surface end of the first electrode 11 The electron beam passing hole through which the upper electron beam passes among the two electron beams has a large aperture, and the electron beam passing hole through which the lower electron beam passes through the two electron beams has a small aperture. Among them, in particular, the first electrode 11 is divided into 6 points so that the 6 electron beams emitted are independent of each other. The structure of the two display modes of the high brightness mode, the low brightness, and the high-definition mode is to form the screens of each display mode separately, and to change the screen structure (screen switching display) or to distinguish the screens in the area for each display mode. To perform scanning, switch the structure of two display modes (area switching display) in each area at the same time. Furthermore, when any of the above-mentioned switching displays is performed, only one of the two electron beams above and below the same-color phosphor is emitted and irradiated on the fluorescent surface, and the other electron beam is not emitted. Therefore, when the display mode is switched, the interactive switching is adopted, that is, the structure of the emitted electron beam and the emitted electron beam is exchanged. Specifically, since this embodiment adopts the G 1 driving method, the voltages respectively supplied to the three first electrodes llRi, llGi, and llBi located at the upper end for the high-brightness mode are supplied to the low-brightness, high-definition The mode uses the voltage of the three first electrodes 11R2, 11G2, and 11B2 at the lower end. When one of the modes is displayed, it is used as the electron beam emission voltage. In the other mode, it is used as the electron beam not emitted voltage (such as close to For cathode -22- This paper scale applies Chinese National Standard (CNS) A4 specification (21 × 297 mm) 516066 A7 B7 V. Description of invention (20) Voltage -250V). Therefore, when the display mode is switched, the voltage supplied to each first electrode is changed to switch the emitted electron beam. In this way, since the first electrode 11 of this embodiment is divided into 6 points, and has separate driving systems for high-brightness mode and low-brightness and high-definition mode, the above-mentioned area switching display can be performed at the same time. Two display modes are displayed on one screen. In addition, when the electron gun for a color cathode ray tube according to this embodiment is provided, when the cathode ray tube is configured, the arrangement of each lens at the center of the screen of the cathode ray tube and the orbit model diagram of the electron beam passing through the lens are compared with the color cathode ray of the above embodiment. The model picture shown in FIG. 4 of the tube electron gun is the same. That is, between the front lens P L and the main lens M L, the two electron beams SB1 and SB2 cross. Therefore, similar to the above-mentioned embodiments, it is possible to prevent the phenomenon that the spot size becomes larger due to the coma aberration and the electron beam trajectory is changed with the change of the current amount, which can cause the spot position deviation. In addition, in the state of FIG. 4, two electron beams SB1 and SB2 passing through the main lens ML are irradiated at different positions on the fluorescent surface, respectively. Therefore, two signals can be processed by image processing 'to scan two locations simultaneously. In this embodiment, since two electron beams SB1 and SB2 are assigned to a high-brightness mode and a low-brightness and high-definition mode, and two display modes are switched, it is impossible to process two signals by image processing. Therefore, the two electron beams SB1 and SB2 must be irradiated to the same position on the fluorescent surface. Therefore, instead of setting the bias electromagnetic outside the neck of the cathode ray tube, 23- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 516066 A7 B7 Five invention description (21 iron, but A coil (not shown in the figure) is provided at the cathode K terminal, and an external quadrupole lens is formed by the coil, and the upper and lower electron beams SB1 and SB2 are irradiated to the same position on the working surface by the external quadrupole lens. In this way, the irradiation positions are made the same. That is, 'the three electron beams of R, G, and B are focused by the main lens ml, and the six electron beams are concentrated by the main lens ML. In addition,' this The model diagram of the arrangement of the lenses at the corners of the screen of the cathode ray tube of the embodiment and the orbit of the electron beam passing through the lens is also the same as that of FIG. 5. 'It is arranged near the forks or intersections of the two electron beams SB 1, SB2. The structure of the quadrupole lens QL. Therefore, when the two electron beams SB1 and SB2 pass through the quadrupole lens ql, the quadrupole lens QL can be prevented from being affected by the aberration of the quadrupole lens QL. Achieve good light spot characteristics. In this embodiment, as in the above-mentioned embodiments, by intersecting the two electron beams sb 1, SB2 between the front lens PL and the main lens ML, the effect and effect of the coma aberration of the front lens PL can be offset. The effect of the coma aberration of the main lens ML. Furthermore, the orbits of the two electron beams sb 1, SB2 incident on the front lens PL and the main lens ML can be adjusted on the first electrode 11 and the second electrode 12. The coma aberration of the front lens PL and the main lens ML is cancelled to form a structure without coma aberration. Therefore, although the respective electron beam passing holes corresponding to the two electron beams SB1 and SB2 are not in the front lens PL and The center of the main lens ML, but with the electron beam passing hole of the first electrode 11 of the previous single-beam electron gun and the front lens PL and -24- This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 B7 ) 516066 5. Description of the invention (22 The same as the electron gun with the center of the main lens ML, it can form a good spot size. In addition, since the electron beam track does not deviate due to the change in driving voltage, it will not cause the electron beam to reach the fluorescent light. Glossy (fluorescent screen ), The brightness deviation and color deviation of the adjacent phosphors, etc. Furthermore, 'the quadrupole lens QL is arranged at or near the intersection of the two electron beams SB 1, SB2, so the two electron beams SB1, SB2 pass through. Near the center of the quadrupole lens QL, a balanced quadrupole operation is generated at the corner of the screen. Therefore, the corner of the screen can avoid the focus deterioration caused by the size of the spot due to the quadrupole lens QL. Therefore, by The color cathode ray tube provided with the electron gun for this embodiment forms a color cathode ray tube, which can obtain a good image with a small spot size, and can perform high-brightness mode display and low-brightness and high-definition mode display. In addition, since the first electrode 11 is divided into six parts and driven by the G 1 driving method, the emitted electron beam can be switched up and down, and two display modes can be switched by the area distinguished on the day. That is, two display modes can coexist on one screen. In addition, in this embodiment, the first electrode 11 and the second electrode 12 are configured such that the electron beam passing hole at the upper end is enlarged and the electron beam passing hole at the lower end is reduced. It can also be turned upside down to reduce the electron beam passing hole at the upper end and enlarge the electron beam passing hole at the lower end. In the following, the color cathode ray tube electron gun of this embodiment is actually produced. -25- This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 516066 A7 B7 V. Description of the invention (23) and review its characteristics . First, the electron gun for a color cathode ray tube of this embodiment is reviewed. When the electron beam passing aperture of the front lens PL is set to 5 mm, the thickness D of the electrode plate 12 A of the second electrode 12 is changed, and the coma shape is changed. Poor relationship. At this time, as with the electron gun for the color cathode ray tube of FIG. 2 shown in FIG. 6, the coma aberration is zero when the thickness D of the electrode plate 12A of the second electrode 12 is 0.65 mm. In addition, the allowable amount of the coma aberration of this electron gun is also set to 0.05 kV. In addition, the relationship between the amount of current and the spot size of the electron gun for a color cathode ray tube of this embodiment and the previous single-beam electron gun (previous example) is compared. . The results when the current is increased corresponding to the high brightness mode (TV mode) are shown in Fig. 12, and the results when the current is decreased corresponding to the low brightness, high definition mode (PC mode) are shown in Fig. 13. It can be seen from FIG. 12 and FIG. 13 that, regardless of the amount of current, the spot size of the electron gun for a color cathode ray tube of this embodiment is comparable to the spot size of the previous single-beam electron gun. That is, it can be seen that the electron gun for a color cathode ray tube of this embodiment can form a good spot size. In addition, FIG. 14 shows the relationship between the amount of current passing through the electron beam passing hole located vertically below the first electrode 11 and the second electrode 12 in the electron gun for a color cathode ray tube according to this embodiment, and the position of the light spot on the polished surface. However, FIG. 14 shows the position of the light spot in a state where a quadrupole action (external quadrupole lens) is generated without a coil provided outside the neck. -26- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 516066 A7 B7 V. Description of the invention (24) According to FIG. 14, it can be seen that the electron gun for the color cathode ray tube of this embodiment changes the current amount, The position of the light spot does not change, and color deviation and brightness deviation do not occur. Furthermore, in a state where the external quadrupole lens is operated, the position of the light spot is 0 regardless of the amount of current, that is, the central axes of the two electron beams are the same. Continuing, FIG. 15 is a perspective view showing an electrode structure of an important part of an extracted electron gun for a color cathode ray tube according to another embodiment of the present invention. Fig. 15 shows the cathode K, the first electrode 11, the second electrode 12, and its electrode plate 12A. In this embodiment, in particular, the first electrode 11 is divided into upper and lower parts to form two electrodes 11U and 11D, which are shared by the electron beams corresponding to the phosphors of the three colors R, G, and B, and are used for the phosphors of the same color. The two electron beams corresponding to the light body are independent of each other. The three electron beams of the first electrode 1 1 U divided into two parts at the upper end pass through the holes to form a large aperture, and the three electron beams of the first electrode 11D at the lower end pass through the holes to form a small aperture. Therefore, the first electrode 11U at the upper end corresponds to the high-brightness mode, and the first electrode 1 1D at the lower end corresponds to the low-brightness and high-definition mode, and two display modes can be displayed. The normal current in the high brightness mode is 1 mA, and the normal current in the low brightness and high fine mode is 0.3 mA. In addition, the electron beam passing holes of the front stage lens PL and the main lens ML of this embodiment are also shared by two electron beams of the same color phosphor, and the two electron beams cross between the front stage lens PL and the main lens ML. Therefore, the quadrupole lens is arranged at or near the intersection of the two electron beams. 0 -27- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 516066 A7 B7 V. Description of the invention (25 ) The other structures such as the second electrode 12 are the same as those of the above-mentioned embodiment shown in FIG. 11, and thus repeated descriptions thereof are omitted. In this embodiment, since the first electrodes 11U and 11D are shared by the respective electron beams corresponding to the three-color phosphors R, G, and B, they are driven by a cathode driving method in which a driving signal is supplied to the cathode K. Therefore, specific examples of switching between the two display modes are as follows. When performing high-brightness display, 0V is supplied to the first electrode 11U at the upper end, -250V is supplied to the first electrode 11D at the lower end, and a driving signal is supplied to the cathode K. As a result, the upper electron beam is emitted and irradiates the fluorescent surface, and the lower electron beam is not emitted. For low-brightness and high-definition mode display, -250V is supplied to the upper first electrode 11U, 0V is supplied to the lower first electrode 11D, and a driving signal is supplied to the cathode K. As a result, the lower electron beam is emitted and shines on the fluorescent surface, and the upper electron beam is not emitted. When the display mode is switched, by switching the voltage supplied to each of the first electrodes 11U and 1 1 D, the two electron beams corresponding to the phosphor of the same color are switched between the emitted electron beam and the non-emitted electron beam. In this way, the high-brightness mode display and the low-brightness and high-definition mode display are performed. According to this embodiment described above, similar to the above-mentioned embodiments, a good spot size can be formed, and brightness deviation and color deviation can be avoided. In addition, according to this embodiment, the first electrode 11 is divided into two parts by forming a large aperture through the electron beam passing hole of the upper electrode 11U, and a small aperture is made through the electron beam passing hole of the 'electrode 1 1 D at the lower end. Switch to -28- This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) 516066 A7 B7 V. Description of the invention (26) The voltage of each first electrode 11U and 11D can be switched to high brightness mode Display and low-brightness, high-definition mode display. Therefore, for example, by switching the pressure supplied to each of the first electrodes 11U and 11D, the display screen in the high-brightness mode and the display screen in the low-brightness and high-definition mode can be switched for display. Therefore, by providing the color cathode ray tube with the electron gun for a color cathode ray tube according to this embodiment, a good image with a small spot size can be obtained, and high brightness mode display and low brightness and high definition mode can be displayed. Since the first electrode 11 is divided into two parts and driven by a cathode driving method, the emitted electron beams can be switched up and down, and the display screens of the two display modes can be switched. In addition, the structure of this embodiment can also be inverted upside down to reduce the electron beam passing hole at the upper end and enlarge the electron beam passing hole at the lower end. The present invention is not limited to the embodiments described above, and various other structures can be adopted without departing from the gist of the present invention. Advantageous Effects of Invention According to the present invention, an electron beam passing hole shared by a plurality of sub-beams is formed in the front lens and the main lens. By crossing a plurality of electron beams between the front lens and the main lens, several electrons can be offset. The beam is affected by the front lens (such as coma aberration and the change in the orbit of the electron beam) and by the main lens, which can greatly reduce the effect on the beam spot of the electron beam, forming a good spot size. 0 In addition, by Make several electron beams cross between the front lens and the main lens-29- This paper size applies to China National Standard (CNS) A4 (210 x 297 mm) 516066
又’可抑制因驅動電壓改變造成的電子束軌道偏差,因此 不致引起電子束射達螢光面(螢光屏)之鄰近螢光體等的亮 度偏差及色彩偏差。 、亦即,由於本發明之陰極射線管,可獲得光點尺寸小的 良好圖像’同時以多束電子槍構成,因此可以兩倍速率進 行掃描,使用哥命亦加倍,再者,如藉由信號處理使數個 電子束重疊時,亮度亦可加倍。 因此本發明可實現高精細、高亮度、壽命加倍的陰極 ,線管。亦即,使用該陰極射線管可實現高精細之顯示 器、電視接收機等。 再者,採用於數個電子束的交叉點或其附近配置4重極 透鏡的構造時,數個電子束通過4重極透鏡的中心附近, 在畫面角落部產生均衡的4重極作用。 疋以’在畫面角落部,可使其不發生因4重極透鏡所造 成之光點尺寸變大的聚焦劣化。 此外’採用對同色螢光體射出兩個電子束,在第一電極 及第二電極上,兩個電子束之其中一個通過的電子束通過 孔形成大孔徑,另一個通過的電子束通過孔形成小孔徑的 構造時,可實現一種陰極射線管,其可進行高亮度模式及 低梵度、高精細模式之各種顯示模式的顯示。 邏_式之簡要說明 圖1為本發明一種實施形態之彩色陰極射線管用電子槍 的側面圖。 圖2為抽出圖1之彩色陰極射線管用電子槍之各電極重 -30- __ 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 516066 A7 B7 五、發明説明(28 ) 要部分的斜視圖。 圖3爲圖2之第二電極電極板的放大圖。 圖4爲圖1之彩色陰極射線管用電子槍之陰極射線管在 畫面中央邵之各透鏡的配置與通過透鏡之電子束軌道的模 型圖。 A圖顯示垂直方向。 B圖顯示水平方向。 圖5爲圖1之彩色陰極射線管用電子槍之陰極射線管在 畫面角落部之各透鏡的配置與通過透鏡之電子束執道的模 型圖。 A圖顯示垂直方向。 B圖顯示水平方向。 心圖6顯示圖丨之彩色陰極射線管用電子槍上前段透鏡之 電子束通過孔徑爲5 mm時,改變第二電極之電極板厚产 時之與彗形像差的關係圖。 又 圖7爲顯示比較電流量與光點尺寸之關係的結果。 圖8爲顯示比較電流量與光點位置之關係的結果。 、圖9局本發明其他實施形態之彩色陰極射線管用電子撿 足重要部分的概略構造圖(斜視圖)。 圖1 0爲本發明另外實施形態之彩色陰極射線管用兩 槍之重要部分的概略構造圖(斜視圖)。 私 圖1 1局本發明另外實施形態之彩色陰極射線管用兩 槍之重要部分的概略構造圖(斜視圖)。 兒 圖〜丁比較阿党度模式之電流量與光點尺寸之關係 516066 A7 B7 五、發明説明(29 的結果。 圖1 3顯示比較低亮度、高精細模式之電流量與光點尺 寸之關係的結果。 圖M顯不圖1 1之彩色陰極射線管用電子槍之電流量與 光點位置的關係。 圖15爲本發明另外實施形態之彩色陰極射線管用電子 槍之重要邵分的概略構造圖(斜視圖)。 元件符號之説明_ 10彩色陰極射線管用電子槍,u 第一電極,12第 一電極,12A電極板,13第三電極,14第四電極, 15第五電椏,16第六電極,17第七電極,18第 八電極,20會聚罩,21玻珠,22心柱,23電阻 體,51第5-1電極,52第5-2電極,53第5_3電 極,1^,1^,、陰極,1^前段透鏡,(^4重極透 鏡,M L 主透鏡 -32 - 本紙張尺度適用中國國家標準(CNS) Α4規格(210 X 297公釐)Also, it can suppress the deviation of the electron beam orbit caused by the change of the driving voltage, so that it does not cause the brightness deviation and color deviation of the adjacent phosphors and the like that the electron beam hits the fluorescent surface (fluorescent screen). That is, because the cathode ray tube of the present invention can obtain a good image with a small spot size, and is composed of multiple electron guns at the same time, it can be scanned at twice the rate, and the life of the brother is doubled. The signal processing also doubles the brightness when several electron beams overlap. Therefore, the invention can realize a high-definition, high-brightness, double-life cathode, wire tube. That is, the use of this cathode ray tube enables high-definition displays, television receivers, and the like. Furthermore, when a structure in which a quadrupole lens is arranged at or near the intersection of a plurality of electron beams is passed, the plurality of electron beams pass near the center of the quadrupole lens and generate a balanced quadrupole effect at the corners of the screen. In the corner of the screen, it is possible to prevent focus deterioration caused by the spot size caused by the quadrupole lens. In addition, two electron beams are emitted from the same-color phosphor. On the first electrode and the second electrode, one of the two electron beams passes through the hole to form a large aperture, and the other electron beam passes through the hole. With the small-aperture structure, a cathode ray tube can be realized, which can perform various display modes of a high-brightness mode, a low Brahman degree, and a high-definition mode. Brief description of the logic pattern Figure 1 is a side view of an electron gun for a color cathode ray tube according to an embodiment of the present invention. Figure 2 shows the weight of each electrode of the electron gun for the color cathode ray tube of Figure 1. -30- __ This paper size applies to China National Standard (CNS) A4 specifications (210X 297 mm) 516066 A7 B7 V. Description of the invention (28) Main parts Oblique view. FIG. 3 is an enlarged view of a second electrode electrode plate of FIG. 2. Fig. 4 is a model diagram of the arrangement of the lenses of the cathode ray tube of the electron gun for the color cathode ray tube of Fig. 1 at the center of the screen and the orbit of the electron beam passing through the lens. Figure A shows the vertical direction. Figure B shows the horizontal direction. Fig. 5 is a model diagram of the arrangement of the lenses of the cathode ray tube of the electron gun for a color cathode ray tube of Fig. 1 at the corners of the screen and the electron beam passing through the lens. Figure A shows the vertical direction. Figure B shows the horizontal direction. Figure 6 shows the relationship between the electron beam passing through the front lens of the electron gun for a color cathode-ray tube and the coma aberration when the thickness of the electrode plate of the second electrode is changed when the aperture is 5 mm. Fig. 7 shows the results of comparing the relationship between the amount of current and the spot size. FIG. 8 shows the results of comparing the relationship between the amount of current and the spot position. Fig. 9 is a schematic structural view (slanted view) of an important part of an electronic pickup for a color cathode ray tube according to another embodiment of the present invention. Fig. 10 is a schematic structural view (slanted view) of important portions of two guns for a color cathode ray tube according to another embodiment of the present invention. Fig. 11 is a schematic structural view (slanted view) of important parts of two guns for a color cathode ray tube according to another embodiment of the present invention. Comparison of the current amount and light spot size in the Al-Dang mode comparison 516066 A7 B7 V. Results of the invention (29). Figure 1 3 shows the relationship between the current amount and light spot size in the low-brightness and high-definition mode. The results are shown in Fig. M, which shows the relationship between the current amount and the spot position of the electron gun for the color cathode-ray tube shown in Fig. 11. Fig. 15 is a schematic structural diagram of an important part of the electron gun for the color cathode-ray tube according to another embodiment of the present invention (squint view). Figure) Explanation of component symbols_ 10 electron guns for color cathode ray tubes, u first electrode, 12 first electrode, 12A electrode plate, 13 third electrode, 14 fourth electrode, 15 fifth electrode, 16 sixth electrode, 17th seventh electrode, 18th eighth electrode, 20 converging cover, 21 glass beads, 22 stems, 23 resistors, 51th 5-1 electrode, 52th 5-2 electrode, 53th 5_3 electrode, 1 ^, 1 ^ , Cathode, 1 ^ front lens, (^ 4 heavy pole lens, ML main lens-32-This paper size applies to China National Standard (CNS) Α4 specification (210 X 297 mm)
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000310835 | 2000-10-11 | ||
JP2001152727A JP3516141B2 (en) | 2000-10-11 | 2001-05-22 | Electron gun for cathode ray tube and cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
TW516066B true TW516066B (en) | 2003-01-01 |
Family
ID=26601891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW90122247A TW516066B (en) | 2000-10-11 | 2001-09-07 | Electron gun for cathode-ray tube and cathode-ray tube |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP3516141B2 (en) |
TW (1) | TW516066B (en) |
WO (1) | WO2002031855A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5483128A (en) * | 1994-09-06 | 1996-01-09 | Chunghwa Picture Tubes, Ltd. | Multi-mode, hybrid-type CRT and electron gun therefor with selectable different sized grid apertures |
JP2000048737A (en) * | 1998-07-27 | 2000-02-18 | Toshiba Electronic Engineering Corp | Color picture tube device |
JP2000123757A (en) * | 1998-10-12 | 2000-04-28 | Sony Corp | Electron gun of cathode ray tube |
-
2001
- 2001-05-22 JP JP2001152727A patent/JP3516141B2/en not_active Expired - Fee Related
- 2001-09-07 TW TW90122247A patent/TW516066B/en active
- 2001-10-05 WO PCT/JP2001/008822 patent/WO2002031855A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2002031855A1 (en) | 2002-04-18 |
JP3516141B2 (en) | 2004-04-05 |
JP2002190259A (en) | 2002-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH07147146A (en) | Picture tube device | |
JPH09190773A (en) | Cathode-ray tube electron gun and cathode-ray tube | |
TW516066B (en) | Electron gun for cathode-ray tube and cathode-ray tube | |
TWI282108B (en) | Cathode-ray tube apparatus | |
CN1268763A (en) | Electron gun and cathode-ray tube therefor | |
JP3734327B2 (en) | Color cathode ray tube equipment | |
US7268478B2 (en) | Electron gun assembly and cathode ray tube with the same | |
US7071606B2 (en) | Color picture tube | |
JP2002170502A (en) | Electron gun for cathode-ray tube and the cathode-ray tube | |
JP2878731B2 (en) | Color picture tube equipment | |
JP2004516635A5 (en) | ||
JPH07147145A (en) | Electron gun for cathode-ray tube | |
JP2003242905A (en) | Cathode ray tube | |
JP2004039300A (en) | Electron gun for cathode-ray tube, and cathode-ray tube | |
JPH04171634A (en) | Cathode-ray tube | |
JPH0554821A (en) | Cathode-ray tube | |
JPH0778573A (en) | Cathode-ray tube | |
JPH01236552A (en) | Electron gun structure for color image receiving tube | |
JP2000323055A (en) | Driving method for field emission type cold cathode element and display device using same | |
JP2007335300A (en) | Color cathode-ray tube | |
JP2000251759A (en) | Electron gun structure | |
JPH0487237A (en) | Color picture tube device | |
JP2002367533A (en) | Electron gun for cathode-ray tube and cathode-ray tube | |
JP2000306521A (en) | Cathode-ray tube | |
JPH1092333A (en) | Color cathode ray tube |