TW463198B - Cathode-ray tube with internal magnetic shield - Google Patents
Cathode-ray tube with internal magnetic shield Download PDFInfo
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- TW463198B TW463198B TW089107967A TW89107967A TW463198B TW 463198 B TW463198 B TW 463198B TW 089107967 A TW089107967 A TW 089107967A TW 89107967 A TW89107967 A TW 89107967A TW 463198 B TW463198 B TW 463198B
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- flanges
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- hollow body
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- shield
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- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
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- 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
- H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/863—Passive shielding means associated with the vessel
- H01J2229/8634—Magnetic shielding
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- Electromagnetism (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
4 63 < 几4 63 < few
五、發明說明（1) 技術領j 本發明是關於陰極射線管（CRT )特別是，具有内部 磁屏蔽可以校正螢幕上之針墊失真或桶狀光柵失真 (Pincushion or barrei-shaped raster distortion)^, CRT。 i知技-術之描述 ，常，彩色CRTs具有一内部磁屏蔽以磁性屏蔽電子束 的路彳二避免不需要的外部磁場如地磁和周邊電路所產生的 磁％屏蔽器，是金屬板所形成的中空零件，具有略成四 角錐口狀的形&。屏蔽器具有一下開口在面板側和一上開 口在電子槍侧。 蔽偏轉磁輛（defl 置。以避免影響由 來，部份由偏轉磁 部，以校正針墊失 例來說，於1 994年 號，於1 9 95年公開 和於1 996年公開之 然而，揭露在 知技術的内部磁屏 狀光栅失真的問題 而且，揭露在 搶側的屏蔽器開口是位於屏蔽器不致遮 ection yoke)所產生磁場的適當位 偏轉磁輛所產生的磁場。不過，近幾年 輕所產生的磁場被用來穿透屏蔽器内 真或桶狀光柵失真。這技術揭露於，舉 公開之日本公開專利公報第6„3 1 0 04 7 之曰本公開專利公報第7-1 05 868 63號， 曰本公開專利公報第8-1 71 86 866號。 公報第6- 3 1 00 47和7- 1 0 5 8 6 863號中之習 蔽器’會有無法完全校正針墊失真或桶 〇 公報第8- 1 7 1 8 686 6號中的習知技術的内V. Description of the Invention (1) Technical Field The present invention relates to a cathode ray tube (CRT). In particular, it has an internal magnetic shield that can correct pincushion or barrei-shaped raster distortion on the screen ^ , CRT. i Know-how description. Often, color CRTs have an internal magnetic shield to magnetically shield the electron beam. Second, to avoid unwanted external magnetic fields such as geomagnetism and magnetic% shields generated by peripheral circuits, they are formed of metal plates. The hollow part has a slightly quadrangular pyramid shape &. The shield has a lower opening on the panel side and an upper opening on the electron gun side. Deflection magnetic vehicle (defl). To avoid the impact, partly by the deflection magnetic department, in order to correct the pin pad loss, it was published in the 1994 issue, published in 1995 and 1996. However, The problem of the internal magnetic screen-like grating distortion of the known technology is disclosed, and the shield opening exposed on the grabbing side is a magnetic field generated by the magnetic deflection at a proper position of the magnetic field generated by the shield so as not to block the yoke). However, in recent years, the magnetic field generated by light is used to penetrate the true or barrel grating distortion in the mask. This technique is disclosed in, for example, Japanese Laid-Open Patent Publication No. 6 "3 1 0 04 7", Japanese Laid-Open Patent Publication No. 7-1 05 868 63, and Japanese Laid-Open Patent Publication No. 8-1 71 86 866. Nos. 6- 3 1 00 47 and 7- 1 0 5 8 6 863 'has no way to fully correct pin cushion distortion or barrels. Known techniques in Bulletin 8- 1 7 1 8 686 6 Inside
4 63 五、發明說明（2) --一·*--------- 部磁屏蔽器， 内壁。因1，在電子搶侧的開口會有凸緣凸向漏斗狀部的 高度c突2 ’凸緣與漏斗狀部内壁接觸的機率隨著凸緣的 佈在接撫長度）增加而增加。如果凸緣與内壁接觸，塗 因在位置内壁的石墨層有可能會剝離或脫落。 -4 # ί，凸緣的高度受到限制，結果針墊失真或桶狀光 具的問題無法完全地校正。 因此’本發明的目的是提供一 CRT具有可以充分校正 S針塾失真或桶狀光栅失真。 本發明的另一目的是提供一 CRT具有内部磁屏蔽器可 以有效地校正針墊失真或桶狀光柵失真。 本發明的另一目的是提供一 CRT具有内部磁屏蔽器可 以权正針塾失真或桶狀光栅失真並具有收歛的效應或校正 收歛誤差。 上述未特別說明的目的藉由下列敘述將使熟於此技術 的人更清楚。 —根據本發明的CRT具有： (a ) —真空管； 真空管内部具有一面板和一電子搶； 真空管具有一由電子槍發射電子束穿過的電子束路 徑；和 (b) —内部磁屏蔽器在真空管内位於面板和電子搶之 間；4 63 V. Description of the invention (2) --- * --------- Internal magnetic shield, inner wall. Because of 1, the opening on the electronic grabbing side will have the height of the flange protruding toward the funnel-shaped portion c. 2 'The probability that the flange will contact the inner wall of the funnel-shaped portion increases as the length of the flange spreads over the stroke. If the flange is in contact with the inner wall, the graphite layer coated on the inner wall may peel or peel off. -4 # ί, the height of the flange is limited, and as a result, the problem of pin cushion distortion or barrel optics cannot be completely corrected. Therefore, the object of the present invention is to provide a CRT with sufficient correction of S-pin distortion or barrel grating distortion. Another object of the present invention is to provide a CRT with an internal magnetic shield which can effectively correct pin pad distortion or barrel grating distortion. Another object of the present invention is to provide a CRT with an internal magnetic shield that can correct pin chirp distortion or barrel grating distortion and have a convergence effect or correct a convergence error. The above unspecified purpose will make it clearer to those skilled in the art by the following description. -The CRT according to the invention has: (a) a vacuum tube; a vacuum tube having a panel and an electron grab inside; the vacuum tube having an electron beam path through which an electron beam emitted by an electron gun passes; and (b) an internal magnetic shield in the vacuum tube It is located between the panel and the electronic grab;
第7頁 463198 五、 發明説明（3) 屏 蔽 器 具 有 一 略 成 四 角 錐 台 狀 的 中 空 體 1 和 一 對 凸 緣 ， 中 空 體 具 有 一 位 於 電 子 搶 侧 的 第 一 開 V 和 一 位 於 面板 側 的 第 一 開 α y 中 空 體 圍 繞 該 路 徑 所 以 電 子 束 會 穿 過 第 一 開 5 中空 體 内 部 ， 和 第 開 口 到 面 板 ； 該 對 凸 緣 固 定 在 中 空 體 接 近 第 一 開 口 的 位 置 ， 該 對 凸 緣 穿 過 路徑 向 内 凸 向 彼 此 * » 其 中 產 生 在 真 空 管 中 的 偏 轉 磁 場 被 吸 引 向 該 對 凸 緣。 根據本發明的CRT，内部磁屏蔽器具有該對凸緣固定 在該中空體接近第一開口的位置。該對凸緣在真空管中穿 過路徑向内凸向彼此。在真空管中所產生的偏轉磁場被吸 引向該對凸緣β 因此，在真空管中的偏轉磁場由於磁場的吸引而沿著 真空管的縱軸擴展。磁場的擴展會減弱造成針墊失真或桶 狀光柵失真的偏轉磁場的分量，並藉此校正針墊失真或桶 狀光柵失真。 、/ 而且，因為該對凸緣在真空管中穿過電子束路徑向内 凸向彼此，擴展偏轉磁場的效應會變強。因此， 正針墊失真或桶狀光柵失真的靈敏度。 义 而且，由於該對凸緣不可能接觸真空管的内壁， 達到該對凸緣的長度或突出高度 如上述，根據本發明的咖，可以充分地校正針塾失Page 7 463198 V. Description of the invention (3) The shield has a hollow body 1 with a slightly quadrangular truncated cone shape and a pair of flanges. The hollow body has a first opening V on the electronic grabbing side and a first opening V on the panel side. An open α y hollow body surrounds the path so the electron beam will pass through the interior of the first open 5 hollow body and the first opening to the panel; the pair of flanges is fixed at the position where the hollow body is close to the first opening, and the pair of flanges pass through The paths protrude inward towards each other * »where the deflection magnetic field generated in the vacuum tube is attracted towards the pair of flanges. According to the CRT of the present invention, the internal magnetic shield has the pair of flanges fixed to the hollow body near the first opening. The pair of flanges project inwardly toward each other through the path in the vacuum tube. The deflection magnetic field generated in the vacuum tube is attracted toward the pair of flanges β. Therefore, the deflection magnetic field in the vacuum tube is extended along the longitudinal axis of the vacuum tube due to the attraction of the magnetic field. The expansion of the magnetic field reduces the component of the deflection magnetic field that causes pin cushion distortion or barrel grating distortion, and thereby corrects pin cushion distortion or barrel grating distortion. Moreover, because the pair of flanges protrude inwardly toward each other through the electron beam path in the vacuum tube, the effect of expanding the deflection magnetic field becomes stronger. Therefore, the sensitivity of the pincushion distortion or barrel grating distortion is positive. In addition, since it is impossible for the pair of flanges to contact the inner wall of the vacuum tube, the length or protruding height of the pair of flanges is reached. As described above, according to the coffee of the present invention, it is possible to sufficiently correct the pin loss.
五、發明說明（4) 真或桶狀光柵失真 因此’減弱偏轉磁場分量的效應變強而同時，突出高 度或该對凸緣的長度可以儘可能設大。這表示該對凸緣的 形狀可以自由地設計。結果，藉由適當地設計該對凸緣的 形狀’可以校正針塾失真或桶狀光柵失真並具有收歛效應 或校正收歛誤差。 根據較佳實施例的CRT，該對凸緣沿著真空管的縱軸 延伸並鉛直縱軸。吸引向該對凸緣的偏轉磁場主要鉛直偏 轉磁場。在本實施例中，具有另一個優點是CRT螢幕上下 端區域的針墊失真或桶狀光柵失真可以有效地校正。 根據本發明的另一較佳實施例中’該對凸緣的突出古 度沿著該對凸緣的延伸方向改變。在本實施例中，具有= —個優點是因為吸引偏轉磁場的效應可以局部地控制， 以針塾失真或桶狀光柵失真的校正準位可以精細地， 整。 平碟調 根據本發明的另一較佳實施例，該對凸緣的形狀口 由正方形、梯形、圓形的片段，或是三角形所構成的可以 t選出。在本實施例中，具有另一個優點是吸弓丨偏轉群^ 的效應可以輕易地使用電腦來模擬因為該對凸緣的形磁場 簡單，因此可以縮短屏蔽器設計和試產所需的時間/狀變 根據本發明另一較佳實施 空體一體形成。在本實施例中 只彎折中空體的一部份即可得 易製造，而可以降低成本。 例，該對凸緣與屏蔽器的 ，具有另一個優點是因為僅 到該對凸緣’故屏蔽器报容V. Explanation of the invention (4) True or barrel-shaped grating distortion Therefore, the effect of weakening the deflection magnetic field component becomes stronger and at the same time, the protruding height or the length of the pair of flanges can be set as large as possible. This means that the shape of the pair of flanges can be freely designed. As a result, by appropriately designing the shape of the pair of flanges, it is possible to correct the pinch distortion or barrel grating distortion and have a convergence effect or correct a convergence error. According to the CRT of the preferred embodiment, the pair of flanges extend along the vertical axis of the vacuum tube and are perpendicular to the vertical axis. The deflection magnetic field attracted to the pair of flanges is mainly a vertical deflection magnetic field. In this embodiment, there is another advantage in that pin cushion distortion or barrel grating distortion in the upper and lower end regions of the CRT screen can be effectively corrected. In another preferred embodiment according to the present invention, the projecting degree of the pair of flanges changes along the extending direction of the pair of flanges. In this embodiment, one advantage is that the effect of attracting the deflection magnetic field can be controlled locally, and the correction level of pinch distortion or barrel grating distortion can be finely adjusted. Flat disc tuning According to another preferred embodiment of the present invention, the shape of the pair of flanges can be selected from square, trapezoidal, circular segments, or triangles. In this embodiment, another advantage is that the effect of the suction bow and the deflection group ^ can be easily simulated by a computer because the shape of the magnetic field of the pair of flanges is simple, so the time required for the design and trial production of the shield can be reduced. The deformation is formed integrally with the hollow body according to another preferred embodiment of the present invention. In this embodiment, only a part of the hollow body is bent, which can be easily manufactured, and the cost can be reduced. For example, the pair of flanges and shields has another advantage because the shields only report to the pair of flanges.
第9頁 4 63 1-' 五、發明說明¢5) 根據本發明另一較佳實施例，該對凸緣可以與屏蔽器 的中空體分開形成然後固定在中空體。在本實施例中’具 有另外的優點敘述如下。 第一，藉由調整該對凸緣和中空體的固定位置，吁以 精細地調整吸引偏轉磁場的效應和針墊失真或桶狀光柵失 真的校正準位。 第二’因為該對凸緣可以與屏蔽器的中空體分開製 造’該對凸緣的形狀可以更複雜。因此，更容易控制吸引 偏轉磁場的效應，而更有效地校正針墊失真或桶狀光柵失 真。 .較佳實施例之說B彳 本發明較佳實施例將參考附圖解釋如下。 第一實施例 如圖1 ’根據本發明第一實施例的彩色C R τ 8 0具有一玻 璃製成的真空管90。真空管90的内部維持在特定高真空狀 態。真空管9 0是由一面板81 ’ 一裙裾部8 2，和一漏斗狀部 83所形成。面板81大約為平面的正方形。的费幕形 成在面板81上。 如圖1 ’CRT80的縱轴鉛直面板81。在此，縱軸定義為 Z軸。而，X軸定義為鉛直z軸橫向延伸的方向。γ轴定義為 錯直Z軸鉛直延伸的方向。面板8 1位於圖1中X軸和γ轴 ^ 成的X-Y平面上。 形Page 9 4 63 1- 'V. Description of the invention ¢ 5) According to another preferred embodiment of the present invention, the pair of flanges may be formed separately from the hollow body of the shield and then fixed to the hollow body. In this embodiment, there are further advantages described below. First, by adjusting the fixed positions of the pair of flanges and hollow bodies, it is required to finely adjust the effect of attracting the deflection magnetic field and the pincushion distortion or barrel grating distortion correction level. Secondly, because the pair of flanges can be manufactured separately from the hollow body of the shield, the shape of the pair of flanges can be more complicated. Therefore, it is easier to control the effect of the attracting deflection magnetic field, and it is more effective to correct pin cushion distortion or barrel grating distortion. .Best Embodiment B 彳 The preferred embodiment of the present invention will be explained below with reference to the drawings. First Embodiment As shown in Fig. 1 ', the color CR τ 80 according to the first embodiment of the present invention has a vacuum tube 90 made of glass. The inside of the vacuum tube 90 is maintained in a specific high vacuum state. The vacuum tube 90 is formed by a panel 81 ', a skirt portion 82, and a funnel-shaped portion 83. The panel 81 is approximately a flat square. The Fei curtain is formed on the panel 81. As shown in FIG. 1, the vertical axis 81 of the CRT 80 is a vertical panel 81. Here, the vertical axis is defined as the Z axis. The X-axis is defined as the direction in which the vertical z-axis extends laterally. The γ-axis is defined as the direction in which the Z-axis extends vertically. The panel 81 is located on the X-Y plane formed by the X-axis and the γ-axis in FIG. 1. shape
4 6 3η 五、發明說明（6) --—-- 面板81的上下端81a和8113沿著Υ軸在鉛直方向遠離ζ 卜面板81的左右端（未圖示）係沿著χ軸橫向遠離2轴。 裙裾部82與面板81 —體形成。裙裾部82與面板81相對 的開口端連接到漏斗狀部83對應的開口端。漏斗狀部83， 大約為圓錐形，在相對面板81的另—端具有—管狀頸部 一螢光幕84形成在面板81的内表面。紅、綠、藍螢光 材料規律地配置在整個螢光幕84上。 在真空管90中，一色彩選擇電極87位於面板“附近並 相對於螢光幕84。色彩選擇電極87具有許多開孔以便讓電 子束86可以選擇性地穿透到螢光幕84。 一内部磁屏蔽器10位於漏斗狀部83中以屏蔽不需要的 外部磁場。屏蔽器1 〇具有一上開口丨3f和一下開口丨^可以 讓電子束86穿透到達螢光幕84，上開口13f和下開口i3e沿 著z軸排列。屏蔽器10與漏斗狀部83的内壁分開。屏蔽器" 10與色彩選擇電極8 7—起固定在大約為正方形的邊框89 上。邊框89由支撐構件固定在裙裾部82的内壁。 在頸部83a中，具有一電子搶85可以發射三個電子束 γ給綠（G)、藍（B)，和紅（R)。一偏轉磁軛88在頸 部83a外面圍繞部份的漏斗狀部83。由電子搶85所發射的 電子束86，經由偏轉磁軛88所產生的磁場水平和鉛直偏 以掃描整個螢光幕84。掃描的電子束86穿過色彩選擇電極 Μ的開孔然後，選擇性地撞擊在螢光幕84的6 ' β或[?顏色 的螢光材料上並激發他們。而根據輸入訊號產生影像在螢4 6 3η V. Description of the invention (6) ----- The upper and lower ends 81a and 8113 of the panel 81 are away from the ζ in the vertical direction along the Υ axis. 2 axes. The skirt part 82 is formed integrally with the panel 81. The open end of the skirt portion 82 opposite to the panel 81 is connected to the corresponding open end of the funnel-shaped portion 83. The funnel-shaped portion 83 is approximately conical and has a tubular neck on the other end of the opposite panel 81. A fluorescent screen 84 is formed on the inner surface of the panel 81. The red, green, and blue fluorescent materials are regularly arranged on the entire screen 84. In the vacuum tube 90, a color selection electrode 87 is located near the panel and is opposite to the screen 84. The color selection electrode 87 has a plurality of openings so that the electron beam 86 can selectively penetrate the screen 84. An internal magnet The shield 10 is located in the funnel-shaped portion 83 to shield the unnecessary external magnetic field. The shield 10 has an upper opening 3f and a lower opening ^, which allows the electron beam 86 to penetrate to the fluorescent screen 84, the upper opening 13f and the lower The openings i3e are arranged along the z-axis. The shield 10 is separated from the inner wall of the funnel-shaped portion 83. The shield " 10 and the color selection electrode 87 are fixed together on an approximately square frame 89. The frame 89 is fixed to the support member by The inner wall of the skirt 82. In the neck 83a, there is an electron grab 85 that can emit three electron beams γ to green (G), blue (B), and red (R). A deflection yoke 88 is on the neck A portion of the funnel-shaped portion 83 surrounding the outside of 83a. The electron beam 86 emitted by the electron grab 85 passes through the magnetic field level and vertical deflection generated by the deflection yoke 88 to scan the entire screen 84. The scanned electron beam 86 passes through The openings of the color selection electrode M are then selectively Click on the 6 'β or [Ying Guangmu 84? Color phosphor material and inspire them to generate an image according to the input signal in the firefly
第11頁 4 63 1 91Page 11 4 63 1 91
五、發明說明σ) 光幕84上，並經由面板81被觀看者看見。 圖2是内部磁屏蔽器10的詳細結構。如圖]， 〇 的上部位於電子槍侧85而屏蔽器1〇的下部位於面板細！。 屏蔽器10的縱轴與ζ軸方向同軸。 如圖2，屏蔽器10具有一略成四角錐台狀形狀的中空 體13。中空體13是由四個磁性材料所形成的邊板i3a、 13b、13c和13d所構成。邊板i3a*13c具有相同形狀的梯 形面。邊板13b和13d具有大約相同形狀的梯形面。邊板 13b和13d在上端具有V型溝槽12。四個邊板13&、13b、13c 和13d的下邊13aa、13ba、13ca和13da形成大約是正方形 的下開口13e。四個邊板13a、13b、13c和13d的上邊 13ab、13bb、13cb和13db形成大約是正方形的上開口 I 3 f。下開口 1 3 e大於上開口 1 3 f。 邊板13b和13d的溝槽12是為了避免電子束86因為已知 地磁而誤偏移。 在真空管9 0中，屏蔽器1 〇以下列方式固定。特別是， 如圖1，邊板1 3a和1 3c分別位於上和下位置。邊板丨3b和 1 3 d分別位於左和右的位置。上開口 1 3 f位於電子搶側8 5而 下開口 1 3e位於面板側8 1。邊板1 3a和1 3c沿著X軸水平延 伸。邊板13b和13d沿者γ軸錯直延伸。 邊板13a和13c用來屏蔽沿著γ軸的鉛直磁場。邊板13b 和1 3 d用來屏蔽沿著X軸的水平磁場。 一對正方形平板狀的凸緣u分別由邊板丨3a和13c的上 邊13ab和13cb突出。凸緣^不是延伸於整個i3ab和13cb，V. Description of the invention σ) on the light curtain 84 and seen by the viewer via the panel 81. FIG. 2 is a detailed structure of the internal magnetic shield 10. As shown in the figure, the upper part of 〇 is on the electron gun side 85 and the lower part of the shield 10 is on the panel! . The vertical axis of the shield 10 is coaxial with the z-axis direction. As shown in Fig. 2, the shield 10 has a hollow body 13 having a substantially quadrangular truncated cone shape. The hollow body 13 is composed of side plates i3a, 13b, 13c, and 13d formed of four magnetic materials. The side plates i3a * 13c have a stepped surface of the same shape. The side plates 13b and 13d have trapezoidal faces of approximately the same shape. The side plates 13b and 13d have V-shaped grooves 12 at the upper ends. The lower sides 13aa, 13ba, 13ca, and 13da of the four side plates 13 &, 13b, 13c, and 13d form a lower opening 13e that is approximately square. The upper sides 13ab, 13bb, 13cb, and 13db of the four side plates 13a, 13b, 13c, and 13d form an upper opening I 3 f that is approximately square. The lower opening 1 3 e is larger than the upper opening 1 3 f. The grooves 12 of the side plates 13b and 13d are to prevent the electron beam 86 from being misaligned due to the known geomagnetism. In the vacuum tube 90, the shield 10 is fixed in the following manner. In particular, as shown in Fig. 1, the side plates 13a and 13c are located in the up and down positions, respectively. The side plates 3b and 1 3 d are located at the left and right positions, respectively. The upper opening 1 3 f is located on the electronic grabbing side 8 5 and the lower opening 1 3e is located on the panel side 81. The side plates 1 3a and 1 3c extend horizontally along the X axis. The side plates 13b and 13d extend straight along the γ axis. The side plates 13a and 13c are used to shield a vertical magnetic field along the γ axis. The side plates 13b and 1d are used to shield the horizontal magnetic field along the X axis. A pair of square flat plate-shaped flanges u protrude from the upper sides 13ab and 13cb of the side plates 3a and 13c, respectively. The flange ^ does not extend across the entire i3ab and 13cb,
第12頁 4 6^1 9L 五、發明說明（8) 換句話說，凸緣11只在1 3 a b和1 3 c b而沒有延伸到端點的位 置。凸緣11罩住凸向中空體13縱軸的上開口 i3f，換句話 說，凸緣11由13ab和13cb邊緣向内凸。在真空管9〇中，凸 緣11大約错直於Z _並沿著Y轴彼此^目對，如圖1。 一對正方形平板狀的凸緣14a和14b由邊板13b的V型上 邊13bb突出。凸緣14a和14b不是延伸於整個13^，換句話 說，只在邊緣1 3 bb而沒有延伸到中間和端點的位置。凸緣 1 4a和1 4b罩住凸向中空體1 3縱軸的上開口〗3 f，換句話 說，凸緣14a和14b由13bb邊緣向内凸。 一對正方形平板狀的凸緣14a’和14b’由邊板13d的V型 上邊13db突出。凸緣14a’和14b’不是延伸於整個i3db ,換 句話說’只在邊緣1 3db而沒有延伸到中間和端點的位置。 凸緣14a’和;14b’罩住凸向中空體13縱軸的上開口 13f，換 句話說，凸緣14a’和14b’由13db邊緣向内凸。 在真空管9 0中’凸緣1 4 a和1 4 a ’大約鉛直於z軸並沿著 (軸彼此相對。同樣地，凸緣14b和14b，大約鉛直於z軸並 A著X轴彼此相對。 ' 在此，凸緣11、14a、14b、14a，和14b，係藉由彎折製 程與中空體13 —體形成。因此’凸緣n、Ua、Hb、 和14b和中空體Μ 一樣以相同的磁性金屬所製成。 、乂根據圖1和2本發明第一實施例的彩色CRT80，如上 Ϊ近S'气蔽器]0具有-對磁性凸緣11固定在中空體13 90中空4 口上邊的13aM〇13cb。該對凸緣11在真空管 過電子束路徑向内凸向彼此。該對凸緣丨丨沿著γ軸Page 12 4 6 ^ 1 9L V. Description of the invention (8) In other words, the flange 11 is only at 1 3 a b and 1 3 c b without extending to the end position. The flange 11 covers the upper opening i3f protruding toward the longitudinal axis of the hollow body 13, in other words, the flange 11 is convex inward from the edges of 13ab and 13cb. In the vacuum tube 90, the flanges 11 are approximately staggered to Z_ and are aligned with each other along the Y axis, as shown in FIG. A pair of square flat plate-shaped flanges 14a and 14b protrude from the V-shaped upper side 13bb of the side plate 13b. The flanges 14a and 14b do not extend over the entire 13 ^, in other words, only at the edge 1 3 bb without extending to the middle and end positions. The flanges 14a and 14b cover the upper opening protruding to the longitudinal axis of the hollow body 13. In other words, the flanges 14a and 14b are convex inward from the edges of 13bb. A pair of square flat plate-shaped flanges 14a 'and 14b' protrude from the V-shaped upper side 13db of the side plate 13d. The flanges 14a 'and 14b' do not extend over the entire i3db, in other words, 'only at the edge 1 3db without extending to the middle and end positions. The flanges 14a 'and 14b' cover the upper opening 13f protruding toward the longitudinal axis of the hollow body 13, in other words, the flanges 14a 'and 14b' are convex inwardly from the edges of 13db. The 'flange 1 4 a and 1 4 a' in the vacuum tube 90 are approximately perpendicular to the z-axis and along (the axes are opposed to each other. Similarly, the flanges 14 b and 14 b are approximately perpendicular to the z-axis and A are opposed to each other along the X-axis. "Here, the flanges 11, 14a, 14b, 14a, and 14b are formed with the hollow body 13 by a bending process. Therefore, the flanges n, Ua, Hb, and 14b are the same as the hollow body M. Made of the same magnetic metal. 乂 The color CRT80 according to the first embodiment of the present invention according to Figs. 1 and 2, as described above, near the S 'air shield] 0 has-a pair of magnetic flanges 11 fixed to the hollow body 13 90 hollow 4 ports 13aM〇13cb above. The pair of flanges 11 protrude inward toward each other in the vacuum tube through the electron beam path. The pair of flanges are along the γ axis
第13頁 五、發明說明（9) 鉛直突出並 軛88所產生 對凸緣11。 沿著X軸水平延伸。因此真空管9〇中由偏轉磁 用以掃描電子束86的偏轉磁場，會被吸引向該 因此，因為磁場的吸引偏轉磁場沿著真空管9〇的縱軸 擴展（Z軸）。磁場的擴展會減弱造成針墊失真或桶狀光 栅失真的偏轉磁場的分量，並藉此校正在螢幕上下端區域 的針墊失真或桶狀光柵失真。 而且，因為該對凸緣11在真空管90中穿過電子束路徑 向内凸向彼此，擴展偏轉磁場的效應會變強。因此，會加 強校正針墊失真或桶狀光栅失真的靈敏度。 而且’因為該對凸緣11不可能與真空管9〇的内壁接 觸，所以該對凸緣的長度或突出高度可以達到滿足值。 如上述，根據圖1和2第一實施例的彩色，可以 有效地校正針墊失真或桶狀光柵失真。 因此，減弱偏轉磁場分量的效應變強而同時，突出高 度或該對凸緣11的長度可以儘可能設大。這表示該對凸緣 11的形狀可以自由地設計，換句話說，凸緣i丨的高度Η和 長度L(圖2)可以自由設定。 結果，藉由適當地設計該對凸緣11的形狀和尺寸，可 以有效地校正校正針墊失真或桶狀光柵失真和收斂誤差。 此外’根據第一實施例的CRT80更具有凸緣對u、14a、 14b、14a’和14b’固定在中空體13上開口13f的上邊13計和 13db。14b和14b’在真空管90中穿過電子束路徑向内凸向 彼此。凸緣14a、14b、14a，和14b，沿著X軸水平突出並沿Page 13 V. Description of the invention (9) The flange 11 produced by the vertical protrusion and yoke 88. Extend horizontally along the X axis. Therefore, the deflection magnetic field used to scan the electron beam 86 by the deflection magnet in the vacuum tube 90 will be attracted to this. Therefore, the magnetic field attracts the deflection magnetic field to expand along the longitudinal axis (Z axis) of the vacuum tube 90. The expansion of the magnetic field reduces the component of the deflection magnetic field that causes pin cushion distortion or barrel grating distortion, and thereby corrects pin cushion distortion or barrel grating distortion in the upper and lower areas of the screen. Moreover, because the pair of flanges 11 project inwardly toward each other across the electron beam path in the vacuum tube 90, the effect of expanding the deflection magnetic field becomes stronger. As a result, sensitivity to correct pincushion distortion or barrel grating distortion is enhanced. Moreover, since the pair of flanges 11 cannot contact the inner wall of the vacuum tube 90, the length or protruding height of the pair of flanges can reach a satisfactory value. As described above, according to the color of the first embodiment of Figs. 1 and 2, it is possible to effectively correct pin cushion distortion or barrel raster distortion. Therefore, the effect of weakening the deflection magnetic field component becomes stronger while at the same time, the protruding height or the length of the pair of flanges 11 can be made as large as possible. This means that the shape of the pair of flanges 11 can be freely designed, in other words, the height Η and the length L (Fig. 2) of the flanges i? Can be freely set. As a result, by appropriately designing the shape and size of the pair of flanges 11, it is possible to effectively correct the pin cushion distortion or the barrel grating distortion and the convergence error. In addition, the 'CRT80 according to the first embodiment further has flange pairs u, 14a, 14b, 14a', and 14b 'fixed to the upper side of the opening 13f of the hollow body 13, and 13db. 14b and 14b 'protrude inwardly toward each other through the electron beam path in the vacuum tube 90. The flanges 14a, 14b, 14a, and 14b protrude horizontally along the X axis and along the
第14頁 463198 五、發明說明（ίο) 著Y轴錯直延伸。因此在真空管90中所產生的偏轉磁場 被吸引向凸緣14a、14b、I4a’和14b，a 因此，因為磁場的吸引，真空管90的偏轉磁場沿 轴（Z軸）擴展。磁場的擴展會減弱造成針墊失真或妝 光柵失真的偏轉磁場的分量’並藉此校正在發幕左" 域的針墊失真或桶狀光柵失真。 端區 第二實施例 圖3是本發明第二實施例彩色CRT内部磁屏蔽器。 蔽器20相當於圖1和2第—實施例中CRT 8〇的屏蔽器去 凸緣14a、Ub、14a，*14b，b的情形。第二實施例的crt除 了以屏蔽器20取代屏蔽器1〇之外其他與圖i crt 8〇具柏 同結構®此’為了簡化起見省略相同結構的解釋圖3並 用相同的參考符號來表示與第—實施例相同的部份。 如圖3内部磁屏蔽器20具有一對長方形平板狀凸緣 分別由邊板13a和13c的上邊13“和13吡突 ^凸^ 住凸向中空體U縱軸的上開口丨”^軸），換句話說緣凸 21由13ab和13cb邊緣向内凸。在真空管9〇 船直於z柏並沿著γ轴彼此相對，如圖丨。凸緣21大約 凸緣21藉由弯折製程與中空體13一體形成。因此 緣21和中空體1 3 -樣以相同的磁性金屬所製成。 不像第一實施例的凸緣1 1，凸緣21分別延伸在整個 13ab和Ucd邊緣。因為第二實施例省略凸緣個 五、發明說明（11) 1 3cd邊緣。 圖3根據第二實施例使用内部磁屏蔽器2〇 屏蔽器20具有一對磁性凸緣21固定在中空體13接^上開口 13f上邊的I3ab和13ct^該對凸緣11在真空管9〇中穿過"電 子束路徑向内凸向彼此.該對凸緣2丨沿著γ軸鉛直突出並 平延伸°因此’真空管90中由偏轉4耗88所產 生用以掃描電子束86的偏轉磁場，會被吸引向該對凸緣 21。因此，磁場沿著真空管9 〇的縱軸擴展（z軸）。 結果，如第一實施例屏蔽器丨〇的相同方式在螢幕上下 端區域的針墊失真或桶狀光柵失真可以被有效地校正而不 會造成該對凸緣2 1接觸到真空管9 0的内壁。 此外’因為凸緣2 1的高度Η和長度L可以自由設定，針 墊失真或桶狀光栅失真和收歛誤差可以藉由適當地設計凸 緣21的高度Η和長度L來有效地校正。 為了確認本發明的優點，本發明者在丨了吋的彩色CRT 上進行下列測試。測試結果如下^ 屏蔽器2 0的凸緣2 1的高度η設成5 mm和1 〇 mm。而，對照 組的高度Η設成0mm，表示省略凸緣2 1。在這情形中，與對 照組比較，在螢幕上下端區域的光柵失真在H = 5mni和i〇mm 兩種情形時分別朝針墊狀偏向〇. 6mm及0. 8mm。同時，在螢 幕上下端區域的鉛直線收斂也會改變。特別是，紅色鉛直 線的收斂相對於藍色鉛直線分別偏向螢幕右邊〇 . 〇 8 nrn和0 · 13mm 〇 因此’使用第二實施例内部屏蔽器2〇的CRT，可以提Page 14 463198 V. Description of the Invention (ίο) The Y-axis extends straight. Therefore, the deflection magnetic field generated in the vacuum tube 90 is attracted toward the flanges 14a, 14b, I4a ', and 14b, a. Therefore, the deflection magnetic field of the vacuum tube 90 expands along the axis (Z axis) because of the magnetic field attraction. The expansion of the magnetic field weakens the component of the deflection magnetic field that causes pin cushion distortion or makeup raster distortion ’and thereby corrects pin cushion distortion or barrel grating distortion on the left side of the curtain. End zone Second Embodiment Fig. 3 is a color CRT internal magnetic shield of a second embodiment of the present invention. The shield 20 corresponds to the case where the flanges 14a, Ub, 14a, * 14b, b of the shield of the CRT 80 in the first embodiment of Figs. 1 and 2 are removed. The crt of the second embodiment has the same structure as that of FIG. I crt 80 except that the shield 10 is replaced by the shield 20. Here, the explanation of the same structure is omitted for simplicity, and FIG. 3 is indicated by the same reference numerals. The same parts as the first embodiment. As shown in FIG. 3, the internal magnetic shield 20 has a pair of rectangular flat plate-shaped flanges respectively protruding from the upper sides 13 "and 13 of the side plates 13a and 13c ^ convex ^ to the upper opening of the U longitudinal axis of the hollow body ^") In other words, the edge 21 is convex inward from the edges of 13ab and 13cb. In the vacuum tube 90, the ship is straight to the z-cypress and faces each other along the γ axis, as shown in Figure 丨. The flange 21 is approximately integrally formed with the hollow body 13 by a bending process. Therefore, the edge 21 and the hollow body 1 3 are made of the same magnetic metal. Unlike the flange 11 of the first embodiment, the flange 21 extends over the entire 13ab and Ucd edges, respectively. Because the second embodiment omits the flange. 5. Description of the Invention (11) 1 3cd edge. Fig. 3 uses an internal magnetic shield 20 according to a second embodiment. The shield 20 has a pair of magnetic flanges 21 and 13c fixed to the hollow body 13 and the opening 13f. The pair of flanges 11 are in a vacuum tube 90. The " electron beam path protrudes inward toward each other. The pair of flanges 2 丨 protrudes vertically along the γ axis and extends flatly °. Therefore, the deflection magnetic field generated by the deflection 4 and 88 in the vacuum tube 90 to scan the electron beam 86 Will be attracted towards the pair of flanges 21. Therefore, the magnetic field expands along the longitudinal axis (z-axis) of the vacuum tube 90. As a result, the pin pad distortion or barrel grating distortion in the upper and lower areas of the screen in the same manner as the shield of the first embodiment can be effectively corrected without causing the pair of flanges 21 to contact the inner wall of the vacuum tube 90. . In addition, because the height Η and length L of the flange 21 can be set freely, the pin cushion distortion or barrel grating distortion and convergence error can be effectively corrected by appropriately designing the height Η and length L of the flange 21. In order to confirm the advantages of the present invention, the inventors performed the following tests on a color CRT. The test results are as follows. The height η of the flange 21 of the shield 20 is set to 5 mm and 10 mm. The height of the control group is set to 0 mm, which means that the flange 21 is omitted. In this case, compared with the control group, the grating distortion at the upper and lower end regions of the screen is deflected toward the pincushion shape by 0.6mm and 0.8mm in the two cases of H = 5mni and i〇mm, respectively. At the same time, the vertical convergence of the lead in the upper and lower areas of the screen will also change. In particular, the convergence of the red vertical line is biased toward the right side of the screen relative to the blue vertical line, respectively. 〇 8 nrn and 0 · 13mm 〇 Therefore, using the CRT of the internal shield 2 of the second embodiment, it is possible to improve
第16頁 五、發明說明（12) -- 升針塾失真或桶狀光拇失真的校正準位並校正收歛誤差。 蓋三實施例 圖4是本發明第三實施例彩色CRT内部磁屏蔽器3〇。屏 蔽器30相當於圖3第二實施例中屏蔽器2〇改變凸緣2丨形狀 的情形。第三實施例的CRT除了以屏蔽器3〇取代屏蔽器1〇 之外其他與CRT 80具有相同結構。因此，為了簡化起見省 略相同結構的解釋圖4並用相同的參考符號來表示與第一 實施例相同的部份。 如圖4，内部磁屏蔽器3 0具有一對平板狀凸緣3丨分別 由邊板13a和13c的上邊13 ab和13 cb突出。凸緣31罩住凸向 中空體13縱軸的上開口 1 3f (Z軸），換句話說，凸緣31由 1 3ab和13 cb邊緣向内凸。在真空管9〇中，凸緣31大約鉛直 於Z軸並沿著Y軸彼此相對，如圖1。 凸緣31藉由彎折製程與中空體丨3 一體形成。因此，凸 緣31和中空體1 3 —樣以相同的磁性金屬所製成。 如同第二實施例的凸緣21，凸緣31分別延伸整個丨3ab 和1 3 c d邊緣。這是因為第三實施例省略凸緣1 4 a、1 4 b、 14a’和14b’ b，所以凸緣31可以輕易地延伸在整個丨3ab和 1 3 c d邊緣。 如圖4 ’凸緣3 1的形狀大約為圓形的片段。因此凸緣 31的突出高度Η在中間最大並向兩端逐漸減少到零。 使用圖4第三實施例内部磁屏蔽器3 〇的彩色CRT，如同 圖2的第二實施例’在螢幕上下端區域的針墊失真或桶狀Page 16 V. Description of the invention (12)-Correction level of pin-up or barrel-shaped thumb distortion and correction of convergence error. Third Embodiment of the Cover FIG. 4 shows a color CRT internal magnetic shield 30 according to a third embodiment of the present invention. The mask 30 is equivalent to the case where the mask 20 changes the shape of the flange 21 in the second embodiment of FIG. The CRT of the third embodiment has the same structure as the CRT 80 except that the masker 30 is replaced by the masker 30. Therefore, for the sake of simplicity, the explanation of the same structure is omitted in Fig. 4 and the same reference numerals are used to denote the same parts as the first embodiment. As shown in Fig. 4, the internal magnetic shield 30 has a pair of flat flanges 3, which protrude from the upper sides 13ab and 13cb of the side plates 13a and 13c, respectively. The flange 31 covers the upper opening 1 3f (Z-axis) protruding toward the longitudinal axis of the hollow body 13, in other words, the flange 31 is convex inward from the edges of 13ab and 13cb. In the vacuum tube 90, the flanges 31 are approximately perpendicular to the Z axis and opposed to each other along the Y axis, as shown in FIG. The flange 31 is integrally formed with the hollow body 3 by a bending process. Therefore, the flange 31 and the hollow body 1 3 are also made of the same magnetic metal. Like the flange 21 of the second embodiment, the flange 31 extends the entire edges of 3ab and 1cd, respectively. This is because the third embodiment omits the flanges 14a, 14b, 14a ', and 14b'b, so the flange 31 can easily extend over the entire edges of 3ab and 1cd. As shown in FIG. 4 ', the shape of the flange 31 is an approximately circular segment. Therefore, the protruding height Η of the flange 31 is maximum in the middle and gradually decreases to zero toward both ends. The color CRT of the internal magnetic shield 30 of the third embodiment of FIG. 4 is used, as in the second embodiment of FIG.
第17頁 463198 五、發明說明（13) 光柵失真可以被有效地校正而不會造成該對凸緣31接觸到 真空管9 0的内壁。而且，收斂誤差也可以校正。 根據本發明者在使用圖4内部磁屏蔽器30的17吋彩色 CRT上的測試。測試結果如下。 當屏蔽器30的凸緣3 1的最大高度Η設成5mm時，與 H = Omni的對照組比較起來，在螢幕上下端區域的光柵失真 偏向針墊狀〇. 7mm。同時，在螢幕上下端區域的鉛直線收 傲也會改變。特別是，藍色鉛直線的收斂相對於紅色鉛直 線偏向螢幕右邊0. 15min。 因為内部磁屏蔽器3 〇具有圓形部份形狀的凸緣31，所 以具有與第二實施例屏蔽器2〇不同的效應D比較上述測試 結果與第二實施例H = 5mm的測試結果’針墊失真或桶狀光 拇失真的偏差值為〇. 7nm ’相當於第二實施例中的〇. 6mn]。 相對地’收斂的偏差值為〇 · 1 5mm ’與第二實施例的〇. 〇 8mm 相差恨大。因此，可以發現下列因素。 H 第^實施例的屏蔽器3〇，可以藉由調整凸緣3 1的高度 ’當控制針墊失真或桶狀光柵失真的改變時收斂的偏 ，會增加。換句話說，當校正收歛誤差時以 失真或桶狀光栅失真。Page 17 463198 V. Description of the invention (13) The grating distortion can be effectively corrected without causing the pair of flanges 31 to contact the inner wall of the vacuum tube 90. Moreover, convergence errors can also be corrected. According to the test by the inventors on a 17-inch color CRT using the internal magnetic shield 30 of FIG. 4. The test results are as follows. 7mm。 When the maximum height of the flange 31 of the shield 30 is set to 5mm, compared with the control group of H = Omni, the grating distortion in the upper and lower end regions of the screen is biased to a pin cushion shape 0.7mm. At the same time, the vertical line of sight in the upper and lower areas of the screen will change. In particular, the convergence of the blue plumb line is biased to the right of the screen by 0.15min relative to the red plumb line. Since the internal magnetic shield 30 has a flange 31 in the shape of a circular portion, it has an effect different from that of the shield 20 of the second embodiment. D The above test results are compared with the test results of the second embodiment H = 5mm. The deviation value of the pad distortion or the barrel-shaped thumb distortion is 0.7 nm ', which is equivalent to 0.6 nm in the second embodiment]. Relatively, the "convergence deviation value" is 0.5 mm, which is significantly different from 0.08 mm in the second embodiment. Therefore, the following factors can be found. H The shield 30 of the third embodiment can adjust the height of the flange 31 to increase the bias of convergence when the pin pad distortion or barrel grating distortion is controlled to change. In other words, distortion or barrel raster distortion is used when correcting the convergence error.
圓5是本發明第四實施例 蔽器40相當於圖3第二實施例 的情形。第四實施例的以丁除 彩色CRT内部磁屏蔽器4〇。屏 中屏蔽器2 0改變凸緣2 1形狀 了以屏蔽器40取代屏蔽器10Circle 5 is a case where the shutter 40 of the fourth embodiment of the present invention corresponds to the second embodiment of FIG. The inner magnetic shield 40 of the fourth embodiment is divided by the color CRT. The shield 2 in the screen changed the shape of the flange 2 1 The shield 10 was replaced by the shield 40
463 ΐ 98 五、發明說明（14)463 ΐ 98 V. Description of the invention (14)
之外其他與CRT 80具有相同結構。因此， ^ 略相同結構的解釋圖5並用相同的參考符…了簡化起見省 實施例相同的部份。 &表示與第一 如圖5，内部磁屏蔽器40具有一對平板 由邊板13a和13c的上邊13礼和13叻突出。凸凸緣41分別 中空體13縱軸的上開口13“2車由），換句話說，2【=2向 13ab和13cb邊緣向内凸。在真空管9〇中， ' 由 於Z軸並沿著γ軸彼此相對，如圖1。 ’、41大約鉛直 如同第二實施例的凸緣21，凸緣41分別延伸整個Η 和13cd邊緣。凸緣41藉由彎折製程與中空體13 — 因此，凸緣41和中空體13—樣以相同的磁性金屬所製° 如圖5，凸緣4 1的形狀大約為具有v形溝槽在中間的 方形。因此凸緣41在中間的高度们和在接近端點的^度 使用圖5第四實施例内部磁屏蔽器4〇的彩色CRT，如同 圖2的第二實施例，在螢幕上下端區域的針墊失真或桶狀 光拇失真可以被有效地校正而不會造成該對凸緣4丨接觸到 真空管90的内壁。而且，收斂誤差也可以校正。 根據本發明者在使用圖5内部磁屏蔽器40的1 7对彩色 CRT上的測試。測試結果如下。 因為凸緣41的形狀和不同高度η 1和H2，在螢幕上下端 區域的針墊失真或桶狀光柵失真偏向桶狀同時，以這個方 式改變的收斂其藍色鉛直線相對於紅色鉛直線偏向螢幕右 邊0Others have the same structure as the CRT 80. Therefore, the explanation of FIG. 5 with the same structure is omitted, and the same reference numerals are used to save the same parts of the embodiment for the sake of simplicity. & Representation and First As shown in Fig. 5, the internal magnetic shield 40 has a pair of flat plates protruding from the upper sides 13a and 13a of the side plates 13a and 13c. The convex flanges 41 are respectively the upper openings 13 "2 of the longitudinal axis of the hollow body 13", in other words, 2 [= 2 to the edges of 13ab and 13cb are convex inward. In the vacuum tube 90, 'due to the Z axis and along the The γ axes are opposite to each other, as shown in Figure 1. ', 41 are approximately vertical like the flange 21 of the second embodiment, and the flange 41 extends the entire edge of Η and 13cd, respectively. The flange 41 and the hollow body 13 are formed by a bending process — therefore, The flange 41 and the hollow body 13 are made of the same magnetic metal. As shown in FIG. 5, the shape of the flange 41 is approximately a square with a v-shaped groove in the middle. The degree of closeness to the end point uses the color CRT of the internal magnetic shield 40 of the fourth embodiment of FIG. 5, as in the second embodiment of FIG. Ground correction without causing the pair of flanges 4 to contact the inner wall of the vacuum tube 90. Moreover, the convergence error can also be corrected. According to the inventor's test on 17 color CRTs using the internal magnetic shield 40 of FIG. The test results are as follows. Because the shape of the flange 41 and the different heights η 1 and H2 are on the screen Pin cushion distortion or end region of the barrel while the barrel deflecting raster distortion, convergence of the blue vertical line to this mode change with respect to the red vertical line toward the right edge of the screen 0
第19頁 46319ft 五、發明說明（15) 這是因為下列原因 因為該對凸緣41吸引在真 生的偏轉磁場偏向該對凸緣41 以與第一實施例相同的方式沿 )° 磁場的擴展降低電子束86 的靈敏度降低。同時，偏轉磁 狀光柵失真減弱。 在螢幕中央鉛直軸端點附 真與省略凸緣4 1相比偏向針墊 的收斂其藍色鉛直線相對於紅 另一方面，在發幕對角線 的高度H2大於在中間的高度H1 位會大於接近螢幕中央錯直軸 失真或桶狀光柵失真會偏向桶 的收傲會與螢幕中央袖端點附 紅色鉛直線偏向螢幕右邊。 如上述’具有第四實施例 或桶狀光柵失真會偏向圖3第. 話說，光柵失真的極相對於收 不同。 空管90中由偏轉磁軛88所產 ’在凸緣41附近的偏轉磁場 著Z軸擴展（偏向面板82 的偏轉水準，也就是，偏轉 場的分量造成針墊失真或桶 近’針塾失真或桶狀光柵失 狀。同時，以這個方式改變 色錯直線偏向螢幕右邊。 端點的附近，在凸緣41端點 因此，偏轉靈敏度的降低準 端點附近=因此，整個針墊 狀。同時，以這個方式改變 近一樣其藍色鉛直線相對於 屏蔽器40的CRT，針墊失真 1實施例的相反方向。換句 歛疾差的極與第二實施例的 第五實施例Page 19 46319ft V. Description of the invention (15) This is because of the following reasons because the deflection magnetic field attracted by the pair of flanges 41 is biased toward the pair of flanges 41 in the same manner as in the first embodiment. The sensitivity of the electron beam 86 is reduced. At the same time, the distortion of the deflection magnetic grating is reduced. At the end of the vertical axis at the center of the screen, it is true that the convergence of the pin cushion is biased compared to the omission of the flange 41. Its blue plumb line is relative to red. On the other hand, the height H2 on the diagonal of the screen is greater than the height H1 in the middle It will be larger than the wrong straight axis distortion near the center of the screen or the barrel raster distortion will be biased towards the barrel. The red lead straight line at the end of the screen's central sleeve will be biased to the right of the screen. As described above, with the fourth embodiment or the barrel grating distortion will be biased toward the third figure. In other words, the grating distortion is extremely different from the receiver. The deflection magnetic field produced by the deflection yoke 88 in the empty tube 90 in the vicinity of the flange 41 expands in the Z axis (the deflection level of the panel 82, that is, the component of the deflection field causes pin cushion distortion or barrel near 'pincushion distortion Or the barrel grating is distorted. At the same time, change the color error straight line to the right of the screen in this way. Near the end point, at the end point of the flange 41. Therefore, the deflection sensitivity is reduced near the near end point. Therefore, the entire pincushion shape. In this way, change the blue lead straight line relative to the CRT of the shield 40, the pin pad distortion is the opposite direction of the embodiment 1. In other words, the extremely poor convergence is the same as the fifth embodiment of the second embodiment.
463198 五、發明說明（16) 蔽器50相當於圖3第二實施例中屏蔽器2〇改變凸緣2 1形狀 的情形。第五實施例的CRT除了以屏蔽器5 〇取代屏蔽器工〇 之外其他與CRT 80具有相同結構。因此，為了簡化起見省 略相同結構的解釋圖6並用相同的參考符號來表示與第一 實施例相同的部份。 如圖6，内部磁屏蔽器50具有一對平板狀凸緣51分別 由邊板13a和13c的上邊13ab和13cb突出。凸緣罩住凸白 中空體13縱軸的上開口i3f(Z軸），換句話說，&緣51由° 13ab和l3cb邊緣向内凸。在真空管9〇中，凸緣51大約鉛直 於Z軸並沿著Y軸彼此相對，如圖1。 条二第二實施例的凸緣21 ’凸緣51分別延伸整個13以 因此如：緣51和中空體13一樣以相同的磁=屬 =’ 1緣51的形狀大約為梯形。因此凸緣51在中 間的间度H1和在接近端點的高度H2，Hl大於。 使用圖6第五實施例内部磁屏蔽器5 、 ° 圖2的第二實施例，在榮幕上下端區域的=CRT ’如同 光柵失真可以被有效地校正而不會/甬' 真空管9〇的内壁。而且，收敛誤差也緣51接觸到 區度ηι'°η2，在螢幕上下端 式改變的收f;偏向摘狀同時，以這個方 邊。這是因為下列原因。 色軋直線偏向螢幕右 因為該對凸緣51吸引在真空管9〇中由偏轉磁細所產463198 V. Description of the invention (16) The shield 50 is equivalent to the case where the shield 20 changes the shape of the flange 21 in the second embodiment of FIG. The CRT of the fifth embodiment has the same structure as the CRT 80 except that the masker 5 is used instead of the masker 0. Therefore, for the sake of simplicity, the explanation of the same structure is omitted in Fig. 6 and the same reference numerals are used to denote the same parts as the first embodiment. As shown in Fig. 6, the inner magnetic shield 50 has a pair of flat plate-shaped flanges 51 protruding from the upper sides 13ab and 13cb of the side plates 13a and 13c, respectively. The flange covers the upper opening i3f (Z axis) of the longitudinal axis of the convex hollow body 13, in other words, the & edge 51 is convex inward by the edges of 13ab and l3cb. In the vacuum tube 90, the flanges 51 are approximately perpendicular to the Z axis and face each other along the Y axis, as shown in FIG. The flanges 21 'of the second embodiment of the stripe 2 respectively extend the entire 13 so that, like the edge 51 and the hollow body 13, the shape of the edge 51 is approximately trapezoidal. Therefore, the interval H1 of the flange 51 in the middle and the heights H2, H1 near the end points are larger. Using the internal magnetic shield 5 of the fifth embodiment of FIG. 6 and the second embodiment of FIG. 2, the = CRT 'in the upper and lower end regions of the glory' can be effectively corrected without the grating distortion / 甬 'of the vacuum tube 90 Inner wall. Moreover, the convergence error also touches the area ηι '° η2 at the edge 51, and changes in the upper and lower ends of the screen. It is biased toward the edge and at this time. This is for the following reasons. The color straight line deviates to the right of the screen because the pair of flanges 51 are attracted by the deflection magnets in the vacuum tube 90.
第21頁Page 21
4 63 1 1B4 63 1 1B
生的偏轉磁場A 以與第一實施例^的太7，在凸緣5丨附近的偏轉磁場 低電子⑽的Γ=ΓϊΠζ軸擴展。磁場的擴展降 右馨墓由!^量成針墊失真或桶狀光柵失真減弱。 „ 中央鉛直軸端點附近，因為偏轉磁場分量減 光拇失真與省略凸緣51相比偏= 色鉛直線偏向螢幕右邊。 了於紅 另方面，在螢幕對角線端點的附近，在凸緣5 1端點 的冋度H2小於在中間的高度H1因此，偏轉靈敏度的降低準 位會小=接近螢幕中央鉛直軸端點附近。結果，電子束8 6 的偏轉量會大於接近螢幕中央軸附近β因此，整個針墊失 真或桶狀光柵失真會偏向針墊狀。以這個方式改變的收斂 會與螢幕中央軸端點附近一樣其藍色鉛直線相對於紅色鉛 直線偏向螢幕右邊。 如上述，具有第五實施例屏蔽器5〇的CRT，針墊失真 或桶狀光栅失真會偏向圖5第四實施例的相反方向。換句 話說’光栅失真的極相對於收歛誤差的極與第四實施例的 不同。 第六眚施例 圖7是本發明第六實施例彩色CRT内部磁屏蔽器60。屏 蔽器60相當於圖3第二實施例中屏蔽器2〇改變凸緣21形狀 的情形。第六實施例的CRT除了以屏蔽器取代屏蔽器1 0The generated deflection magnetic field A is extended with the deflection magnetic field in the vicinity of the flange 5 丨 of the first embodiment, and the low-electron Γ′ΓΓΓΓΠζ axis is extended. The extension of the magnetic field is reduced. The tomb of You Xin is weakened by the amount of pin cushion distortion or barrel grating distortion. „Near the end point of the central vertical axis, because the deflection magnetic field component reduces the distortion of the thumb compared with the omission of the flange 51, the color lead line is biased to the right of the screen. On the other hand, near the end of the diagonal of the screen, the convex The edge H1 of the edge 5 1 is smaller than the height H1 in the middle. Therefore, the reduction level of the deflection sensitivity will be small = near the center of the vertical axis of the screen. As a result, the amount of deflection of the electron beam 8 6 will be greater than that of the center of the screen. Nearby β Therefore, the entire pincushion distortion or barrel grating distortion will be biased toward the pincushion shape. The convergence changed in this way will be the same as near the endpoint of the central axis of the screen, and its blue lead line will be biased to the right of the screen relative to the red lead line. For a CRT with a masker 50 of the fifth embodiment, pin cushion distortion or barrel grating distortion will be biased in the opposite direction of the fourth embodiment of Figure 5. In other words, the pole of the grating distortion is relative to the pole of the convergence error and the fourth Sixth Embodiment FIG. 7 is a color CRT internal magnetic shield 60 in a sixth embodiment of the present invention. The shield 60 is equivalent to the shield 20 in the second embodiment of FIG. 3 and the shape of the flange 21 is changed. In the CRT of the sixth embodiment, except that the masker is used instead of the masker 10
第22頁 4 63 1 -)¾Page 22 4 63 1-) ¾
五、發明說明（18) 之外其他與CRT 80具有相同結構。 略相同結構的解釋圖7並用相同 ^，為了簡化起見省 實施例相同的部份。 、考符號來表示與第一 如圖7，内部磁屏蔽器6〇具 由邊板1 3a和1 3c的上邊1 3ab和彳β對平板狀凸緣6 1分別 中空體Π縱抽的上開=3 =。凸_罩住凸向 _和_緣向内ώ。在真軸空)管：广’凸緣61由 於Z#並沿著Υ轴彼此相對，如m。+，凸緣61大約鉛直 和13cd二=1施例的凸緣21 ’凸緣61分別延伸整個13ab 因此，凸緣61和中心13 :製私與中空體13-體形成。 如圖7，几姑c工體樣以相同的磁性金屬所製成。 6〗的;SI:為， 圖2:第用二實= = 器6°的彩色⑽，如同 真空管90的内壁。it ”：不會造成該對凸緣61接觸到 Λ 而且’收斂誤差也可以校正。 或桶狀I 五實施例’在f幕向下端區域的針塾失真 斂兑駐 、會偏向針墊狀同時，以這個方式改變的收 1色鉛直線相對於紅色鉛直線偏向螢幕右邊。 sn知Rn 述第—到第六實施例，凸緣對10、20 ' 30、40、 板#鉍Γ中空體13 一體形成。因此僅只贊折中空體13的平 板I材料即可形成，並提高產量而降低製造成本。 第23胃 463 1 9'V. Description of Invention Except (18), it has the same structure as CRT 80. Fig. 7 is explained with slightly the same structure and the same ^ is used, and the same parts of the embodiment are omitted for simplicity. The test symbol is used to indicate the first as shown in Figure 7. The internal magnetic shield 60 has a flat body flange 6 1 drawn from the upper side of the side plates 1 3a and 1 3c and the flat flange 6 1 respectively. = 3 =. Convex _ cover the convex _ and _ edge inward. In the true axis, the tube is wide: The flange 61 is due to Z # and faces each other along the Υ axis, such as m. +, The flange 61 is approximately vertical, and the 13cd 2 = 1 embodiment of the flange 21 ′ The flange 61 extends the entire 13ab, respectively. Therefore, the flange 61 and the center 13 are formed of a private body and a hollow body 13-. As shown in Fig. 7, several C-shaped bodies are made of the same magnetic metal. 6〗; SI: Yes, Figure 2: The first two real color = = 6 ° colored ⑽, like the inner wall of the vacuum tube 90. it ”: This pair of flanges 61 will not cause the pair of flanges 61 to contact Λ and 'convergence errors can be corrected. Or barrel-shaped I-Fifth embodiment' Acupuncture distortion in the lower area of the f-screen is converged and will be biased towards the pin cushion The 1-color lead line changed in this way is biased toward the right side of the screen relative to the red lead line. Sn know Rn The first to sixth embodiments, flange pair 10, 20 '30, 40, plate #bismuth hollow body 13 It is formed integrally. Therefore, it can be formed only by complimenting the flat plate I material of the hollow body 13, which can increase the yield and reduce the manufacturing cost. The 23rd stomach 463 1 9 '
复七實施例 圖8是本發明第七實施例彩色c r τ内部磁屏蔽器7 0。屏 蔽器7 0相當於圖3第二實施例中屏蔽器丨0除了凸緣對2丨以 對或緣7 1取代屏蔽器之外。第七實施例的。r τ除了以 屏蔽器60取代屏蔽器1〇之外其他與CRT 80具有相同結構。 因此’為了簡化起見省略相同結構的解釋圖8並用相同的 參考符號來表示與第一實施例相同的部份。 如圖8 ’内部磁屏蔽器70具有一對長方形平板狀凸緣 Π分別由邊板13a和13c的上邊13ab和13cb突出。凸緣71罩 住凸向中空體13縱軸的上開口13f(z軸），換句話說，凸緣 71由13ab和1 3cb邊緣向内凸。在真空管9〇中，凸緣71大約 紹直於Z軸並沿著Y軸彼此相對，如圖1。 如同第二實施例的凸緣21，凸緣71分別延伸整個Uab 和13cd邊緣。凸緣71與邊板13a ’13b，13c和13d分開成形 然後，分別固定到邊板1 3 a和1 3 b的内壁。凸緣7 1和中空體 1 3 —樣以相同的磁性金屬所製成。 使用圖8第七實施例内部磁屏蔽器7〇的彩色CRT，如同 圖2的第二實施例，在螢幕上下端區域的針墊失真或桶狀 光柵失真可以被有效地校正而不會造成該對凸緣71接觸到 真空管90的内壁。而且，收斂誤差也可以校正。 不像圖3的第二實施例，因為凸緣71是與邊板丨3a， 1 3b，1 3c和1 3d分開成形然後，分別固定到邊板丨仏和丨⑽ 的内壁。因此必須要有固定到邊板13a和13b的步驟。然 而’好處是凸緣71的位置可以沿著CRT的縱軸調整（2軸Seventh Embodiment Fig. 8 shows a color cr r τ internal magnetic shield 70 according to a seventh embodiment of the present invention. The shield 70 is equivalent to the shield 丨 0 in the second embodiment of FIG. 3 except that the flange pair 2 is replaced by a pair or edge 71. The seventh embodiment. r τ has the same structure as the CRT 80 except that the shield 10 is replaced by the shield 60. Therefore, for the sake of simplicity, the explanation of the same structure is omitted in Fig. 8 and the same reference numerals are used to denote the same parts as the first embodiment. As shown in Fig. 8 ', the internal magnetic shield 70 has a pair of rectangular flat plate-shaped flanges Π protruding from the upper sides 13ab and 13cb of the side plates 13a and 13c, respectively. The flange 71 covers the upper opening 13f (z-axis) protruding toward the longitudinal axis of the hollow body 13, in other words, the flange 71 is convex inward from the edges of 13ab and 13cb. In the vacuum tube 90, the flanges 71 are approximately straight along the Z axis and face each other along the Y axis, as shown in FIG. Like the flange 21 of the second embodiment, the flange 71 extends the entire Uab and 13cd edges, respectively. The flange 71 is formed separately from the side plates 13a'13b, 13c, and 13d and then fixed to the inner walls of the side plates 1 3a and 1 3b, respectively. The flange 7 1 and the hollow body 1 3 are also made of the same magnetic metal. Using the color CRT of the internal magnetic shield 70 of the seventh embodiment of FIG. 8, as in the second embodiment of FIG. 2, pin cushion distortion or barrel grating distortion in the upper and lower end regions of the screen can be effectively corrected without causing the problem. The opposing flange 71 contacts the inner wall of the vacuum tube 90. Moreover, convergence errors can also be corrected. Unlike the second embodiment of FIG. 3, the flange 71 is formed separately from the side plates 丨 3a, 1 3b, 1 3c, and 1 3d and then fixed to the inner walls of the side plates 丨 仏 and 丨 ⑽, respectively. Therefore, there must be a step of fixing to the side plates 13a and 13b. However, the advantage is that the position of the flange 71 can be adjusted along the longitudinal axis of the CRT (2 axis
第24頁Page 24
d 63 1 9B 五、發明說明（20) )’而可以精細地調整校正準位或針墊失真或桶狀光柵失 真的量。 雖然第七實施例的凸緣7 1是長方形，但也可以是第三 到第六實施例的任何其他形狀。而且，凸緣7 1的形狀，可 以是任何如彎曲條狀的複雜形狀。因此，校正準位或針墊 失真或桶狀光栅失真的量可以更有效地校正。 +、雖然本發明針對上述第一到第七實施例的彩色CRT來 為，’但也可以適用於單色CRT。内部磁屏蔽器的凸緣可 乂是其他圖2到8的任何形狀。 專利^然本發明針對特定實施例來清楚完整地揭露，申請 1 &圍並不限於實施例任改 於熟於此技藝 的人皆能輕易的達到。1變災d 63 1 9B V. Description of the invention (20)) ’, and can finely adjust the correction level or pin cushion distortion or barrel grating distortion. Although the flange 71 of the seventh embodiment is rectangular, it may be any other shape of the third to sixth embodiments. The shape of the flange 71 can be any complicated shape such as a curved strip. Therefore, the amount of correction level or pincushion distortion or barrel grating distortion can be corrected more effectively. +. Although the present invention is directed to the color CRTs of the first to seventh embodiments described above, 'it may be applied to a monochrome CRT. The flange of the internal magnetic shield can be any of the other figures 2 to 8. Patent: The present invention is clearly and completely disclosed for a specific embodiment, and the application 1 is not limited to the embodiment. Any person skilled in the art can easily achieve it. 1 Disaster
第25頁Page 25
A 63 1 9B 圖式簡單說明 圖1為依本發明第一實施例之彩色CRT結構的示意橫剖 面圖； 圖2為依圖1之第一實施例之CRT之内部磁屏蔽器詳細 結構的示意立體圖； 圖3為依本發明第二實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖； 圖4為依本發明第三實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖； 圖5為依本發明第四實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖； 圖6為依本發明第五實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖； 圖7為依本發明第六實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖； 圖8為依本發明第七實施例之彩色CRT的内部磁屏蔽器 詳細結構的示意立體圖。A 63 1 9B Brief Description of Drawings Figure 1 is a schematic cross-sectional view of a color CRT structure according to the first embodiment of the present invention; Figure 2 is a schematic diagram of the detailed structure of the internal magnetic shield of the CRT according to the first embodiment of FIG. 1 3 is a schematic perspective view of the detailed structure of the internal magnetic shield of the color CRT according to the second embodiment of the present invention; FIG. 4 is a schematic perspective view of the detailed structure of the internal magnetic shield of the color CRT according to the third embodiment of the present invention; 5 is a schematic perspective view of a detailed structure of an internal magnetic shield of a color CRT according to a fourth embodiment of the present invention; FIG. 6 is a schematic perspective view of a detailed structure of an internal magnetic shield of a color CRT according to a fifth embodiment of the present invention; FIG. 8 is a schematic perspective view of the detailed structure of the internal magnetic shield of the color CRT according to the sixth embodiment of the present invention; FIG. 8 is a schematic perspective view of the detailed structure of the internal magnetic shield of the color CRT according to the seventh embodiment of the present invention.
第26頁Page 26
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11117795A JP2000311620A (en) | 1999-04-26 | 1999-04-26 | Internal magnetic shield and color cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW463198B true TW463198B (en) | 2001-11-11 |
Family
ID=14720488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW089107967A TW463198B (en) | 1999-04-26 | 2000-04-26 | Cathode-ray tube with internal magnetic shield |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2000311620A (en) |
| KR (1) | KR20010014826A (en) |
| TW (1) | TW463198B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846582B1 (en) * | 2002-09-26 | 2008-07-16 | 삼성에스디아이 주식회사 | Inner shield for CRT |
| KR100684381B1 (en) * | 2004-10-04 | 2007-02-20 | 양태식 | A electricity roaster of the rotation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56147345A (en) * | 1980-04-17 | 1981-11-16 | Toshiba Corp | Color picture tube |
| JPH03187131A (en) * | 1989-12-15 | 1991-08-15 | Toshiba Corp | Color picture tube |
| ATE142047T1 (en) * | 1991-03-08 | 1996-09-15 | Philips Electronics Nv | COLOR IMAGE REVIEW TUBE WITH INTERNAL MAGNETIC SHIELD CAP |
| MY110090A (en) * | 1991-04-29 | 1997-12-31 | Koninklijke Philips Electronics Nv | Colour display tube having an internal magnetic shield. |
| KR100227931B1 (en) * | 1997-09-24 | 1999-11-01 | 손욱 | Inner shield of cathode ray tube and method thereof |
-
1999
- 1999-04-26 JP JP11117795A patent/JP2000311620A/en active Pending
-
2000
- 2000-04-26 TW TW089107967A patent/TW463198B/en not_active IP Right Cessation
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| KR20010014826A (en) | 2001-02-26 |
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