WO2003071573A1 - Color cathode ray tube - Google Patents
Color cathode ray tube Download PDFInfo
- Publication number
- WO2003071573A1 WO2003071573A1 PCT/JP2003/001621 JP0301621W WO03071573A1 WO 2003071573 A1 WO2003071573 A1 WO 2003071573A1 JP 0301621 W JP0301621 W JP 0301621W WO 03071573 A1 WO03071573 A1 WO 03071573A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cathode ray
- ray tube
- panel
- color
- selection electrode
- Prior art date
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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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
- H01J29/073—Mounting arrangements associated with shadow masks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/07—Shadow masks
- H01J2229/0705—Mounting arrangement of assembly to vessel
- H01J2229/0711—Spring and plate (clip) type
Definitions
- the present invention relates to a color cathode ray tube, and more particularly to an improvement of a support member for fixing a color selection electrode assembly to a panel.
- the color cathode ray tube has a color selection electrode such as a shadow mask or an aperture grill.
- the color selection electrode is held by the frame to form a color selection electrode structure, for example, a shadow mask structure.
- the shadow mask structure is fixed to the inner wall of the panel via a support member.
- the color cathode ray tube is operated, the electron beam collides with the shadow mask, and the shadow mask and the frame holding it are thermally expanded.
- the aperture of the shadow mask causes a slight displacement toward the periphery of the shadow mask, which causes a color shift on the screen.
- a technique is generally used in which the support member has a function of correcting the position of the opening of the shadow mask.
- a spring having a substantially V-shape is described in Japanese Patent Application Laid-Open No. 62-43232.
- Fig. 5 shows an enlarged cross-sectional view of the spring part of a conventional color cathode ray tube using this technology.
- Reference numeral 4 denotes a panel having a fluorescent screen 9 inside.
- Reference numeral 3 denotes a shadow mask structure, which has a structure in which a shadow mask 2 is held in a frame 10.
- the shadow mask structure 3 is supported by a panel 4 by a substantially V-shaped spring 1.
- the spring 1 includes an elastic movable part la and a fixed part 1b. Fixed part lb, frame 10 Is welded to.
- the distal end of the movable portion 1a forms a locking portion 1c, and the locking portion lc is locked to a panel pin 5 fixed to the panel 4.
- 2a indicates the periphery of the opening area of the shadow mask 2.
- 6 is the axis of the color cathode ray tube
- 7 is the electron beam.
- the angle of inclination of the spring 1 must be 45 ° or more because the angle ⁇ is 45 °.
- the frame 10 is required to have high rigidity, and accordingly, the weight increases. Therefore, when an external impact is applied to the frame 10, the spring 1 may receive an excessive bending moment and may be plastically deformed. Disclosure of the invention
- the present invention provides a support member having a function of correcting a color shift caused by thermal expansion of a color selection electrode assembly, by suppressing attachment / detachment in a manufacturing process and plastic deformation caused by an external impact force. It is intended to improve the application so that it can be easily applied to a color cathode ray tube having a high definition and flat screen.
- a color cathode ray tube according to the present invention includes a panel on which a fluorescent screen is formed, a funnel joined to the panel, an electron gun provided on the funnel, and a color selection electrode installed facing the fluorescent screen. And a support member having a substantially V shape for fixing the color selection electrode assembly to the panel.
- the support member has elasticity, and a tip of a fixed portion, which is one of the substantially V-shaped arms, is fixed to a side surface of the color selection electrode assembly, and a tip of a movable portion, which is the other arm, is the arm. Locked to the panel.
- the substantially V-shaped apex portion of the support member is located on the tube axis side with respect to a side surface of the color selection electrode assembly where the fixing portion is fixed.
- the aperture position of the color selection electrode is effectively corrected, and a highly accurate color cathode ray tube is realized. Furthermore, even when a high-rigidity frame is used, the bending moment received by the support member is small, and the screen can be easily flattened.
- the substantially V-shaped apex portion may be arranged to face the panel.
- a concave portion is formed on a side surface of the color selection electrode assembly, the concave portion being recessed on the tube axis side from a surface on which the fixing portion of the support member is fixed, and a substantially V-shaped apex portion of the support member is formed by the concave portion.
- the substantially V-shaped apex portion is shifted toward the tube axis with respect to the side surface of the color selection electrode assembly to which the fixing portion is fixed. it can.
- the fixed part and the movable part of the support member are each bent, and the bend is formed such that the apex side is displaced toward the tube axis side.
- FIG. 1 is a cross-sectional view of a color cathode ray tube according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view showing an enlarged part of the color cathode ray tube of FIG. 1
- FIG. 3A is a color cathode ray tube of FIG. An enlarged sectional view of a portion of a spring supporting a shadow mask structure in the pipe,
- FIG. 3B is an enlarged cross-sectional view of a spring supporting the shadow mask structure in the conventional color cathode ray tube.
- FIG. 4A is a perspective view of a shadow mask structure having a curved shadow mask
- FIG. 4B is a perspective view of a shadow mask structure having a tensioned and supported shadow mask
- FIG. 5 is an enlarged sectional view of a part of a conventional color cathode ray tube.
- BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
- FIG. 1 is a sectional view of a color cathode ray tube according to the present embodiment.
- the color cathode ray tube has a flat panel 4 and a funnel 8 joined to the panel 4.
- a fluorescent screen 9 is formed on the inner surface of panel 4.
- the shadow mask structure 3 includes a shadow mask 2 having a large number of apertures formed on the surface thereof, and a substantially rectangular frame 10a for holding the shadow mask 2 by applying tension.
- the frame 10 a is fixed to the panel 4 via a spring 11 and a panel pin 5 at substantially the center of both sides in the longitudinal direction of the panel 4.
- the neck 13 of the funnel 8 is provided with an electron gun (not shown).
- the electron beam 7 emitted from the electron gun passes through the aperture of the shadow mask 2 and irradiates the fluorescent screen 9, whereby an image is displayed on the color cathode ray tube.
- Reference numeral 6 denotes a tube axis, which is perpendicular to the phosphor screen 9 and passes through almost the center of the panel 4.
- FIG. 2 shows an enlarged cross-sectional view of a portion where the shadow mask structure 3 is fixed to the panel 4.
- a concave portion 12 is formed on the side surface of the frame 10 a so as not to block the electron beam 7.
- the shadow mask structure 3 is fixed to the panel 4 via a substantially V-shaped spring 11.
- the spring 11 has a structure in which one end of two bent plate-like members is welded to form a vertex 14. The direction parallel to the tube axis 6 through the vertex 14 is indicated by 6a.
- the plate forming one arm forms the movable portion 11a, and the plate forming the other arm forms the fixed portion 11b.
- the movable portion 11a and the fixed portion 11b are bent at the center in the longitudinal direction.
- the fixing portion 11b is fixed to the side surface of the frame 10a at the welding point 15 on the tip side of the bent portion.
- the movable portion 11a is locked to the panel pin 5 at a locking portion 11c that forms a distal end side of the bent portion.
- the movable part 11a has an inclination angle of ⁇ 1 with respect to the direction 6a.
- the fixing part 1 lb forms a corner 3 with the direction 6 a on the side of the vertex part 14 from the bent part.
- the top portion 14 enters the concave portion 12 and is shifted to the pipe shaft 6 side from the welding point 15.
- FIG. 3A is a cross-sectional view around the spring 11.
- FIG. 3B is a cross-sectional view around the spring 1 in the case of the conventional technology.
- the members and angles indicated by the respective reference numerals correspond to those indicated by the same reference numerals in FIGS. 2 and 5, respectively.
- the inclination angle ⁇ 1 of the spring 11 in the present embodiment shown in FIG. 3A is set equal to the inclination angle 2 of the conventional spring 1 shown in FIG.
- the distance between the fixed portion 11 b of the spring 11 and the locking portion 11 c is X (mm).
- Y (mm) be the offset amount of the spring 11, that is, the distance between the apex 14 of the substantially V-shaped spring 11 and the pipe shaft side from the welding point 15.
- the thickness of the fixed part 1 1b is t (mm).
- the length Z 1 of the movable portion 11 a is
- the amount of plastic deformation of the spring 11 when the shadow mask assembly 3 is attached to and detached from the panel 4 is inversely proportional to the length of the movable portion 11a. 11 plastic deformation is small. Therefore, even if the shadow mask structure 3 is repeatedly attached and detached, the accuracy of the attachment position is kept high.
- the fixed portion 11b since the fixed portion 11b is inclined at an angle of / 3 from the pipe axis at the vertex portion 14 side (see FIG. 2), the fixed portion 11b at the vertex portion 14 side of the fixed portion 11b is formed.
- the cross-sectional secondary moment is (lZcos / 3) three times that of the prior art. Therefore, in the present embodiment, the amount of bending of the fixed portion 11b when receiving an external impact of the same magnitude is reduced, so that the mounting position of the shadow mask structure 3 is less likely to shift.
- the concave portion 12 provided on the side of the frame 10a must be deepened. Can be. The deeper the concave portion 12 is, the larger the offset amount of the spring 11 can be, and the more effective the correction of the color shift of the screen can be.
- This embodiment can be applied to various types of color selection electrode assemblies.
- a form in which a shadow mask 16 formed into a curved surface is supported by a substantially rectangular frame 10a can be applied.
- a configuration in which a shadow mask 17 to which tension is applied in the direction of the arrow is supported by a pair of upper and lower frames 18 and an auxiliary frame 19 supporting the same is also applicable.
- a space is formed between the shadow mask 17 and the auxiliary frame 19. Therefore, the spring 11 as shown in FIG.
- the spring is not limited to the longitudinal side surface of the frame, and may be arranged at any portion such as a corner portion as long as it is stably fixed.
- the number of springs used can be changed as appropriate according to the size and weight of the shadow mask structure and its mounting position on the panel.
- the spring 11 is not limited to a shape in which a plate-like body is bent at two positions as in the present embodiment. As long as it is substantially V-shaped, for example, a shape bent at three or more places may be used, or a shape bent in a bow may be used.
- the invention is not limited to the case where a shadow mask is used as a color selection electrode as described in the present embodiment, but the present invention uses a color selection electrode having another structure such as an aperture grill having slit-shaped holes. The same applies to color cathode ray tubes.
- a color cathode ray tube having a screen size of 34 inches (80 cm), a shadow mask pitch of 0.58 mm, and a thickness of 1.8 mm was manufactured.
- the frame of the shadow mask structure was 50 mm high and 1.8 mm thick.
- a recess 12 having a height of 15 mm, a width of 35 mm, and a depth of 3 mm was provided on the side surface of the corner of the frame 10a.
- the spring 11 has a movable part 11a including a locking part 11c having a width of 30 mm and a wall thickness of 0.5 mm, and a fixed part 12c having a width of 30 mm and a wall thickness of 1.4. mm. Positioning the top 14 in the recess 12 allows the pipe shaft 6 to be The spring 11 was attached to a part of the corner of the frame 10a.
- the distance X was 30 mm, and the offset amount Y was 2.4 mm.
- the shift amount of the spot position of the electron beam from the reference value was 5 m at the periphery of the opening area of the shadow mask.
- the shift amount of the fixed position of the shadow mask structure 3 from the reference value was 10 m, which was suppressed to the allowable value of 20 or less for quality assurance.
- the shift amount of the electron beam was 10 m, which was suppressed to 30 m or less, which is the allowable value for quality assurance.
- the shift amount of the spot position of the electron beam from the reference value was 5 m at the periphery of the aperture region, as in the example based on the embodiment.
- the shift amount of the fixed position of the shadow mask structure 3 from the reference value was 50 m, which exceeded the allowable value of 20 m for quality assurance.
- the shift amount of the electron beam was 40 m, exceeding the allowable value of 30 xm, which can guarantee the quality.
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- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
A color cathode ray tube comprising a panel (4) on which a fluorescent surface (9) is formed, a funnel (8), an electron gun (13), a color selection electrode structure (3) installed to face the fluorescent surface, and a V-shaped support member (11) for fixing the color selection electrode structure to the panel. The support member (11) is elastic, and is fixed at one fixed portion (11b) of the V-shape to the side surface of the color selection electrode structure (3) and locked at the other movable portion (11a) to the panel (4). The apex of the V-shape is positioned shifted toward a tube axis side beyond the side surface, to which the fixed portion is fixed, of the color selection electrode structure (3). This arrangement permits an effective correction of the opening position of a color-selection electrode, to realize a high-precision color cathode ray tube. In addition, bending moment received by the support member is small even if a high-rigidity frame is used to easily flatten the screen.
Description
明 細 書 カラー陰極線管 技術分野 Description Color cathode ray tube Technical field
本発明はカラー陰極線管、 特に、 色選別電極構体をパネルに固定する ための支持部材の改良に関する。 背景技術 The present invention relates to a color cathode ray tube, and more particularly to an improvement of a support member for fixing a color selection electrode assembly to a panel. Background art
カラー陰極線管は、 シャドウマスクあるいはアパーチャグリル等の色 選別電極を有する。 色選別電極がフレームに保持されて、 色選別電極構 体、 例えばシャドウマスク構体が形成される。 シャドウマスク構体は、 支持部材を介してパネル内壁に固定される。 カラー陰極線管を動作させ た際には、 電子ビームがシャドウマスクに射突して、 シャドウマスクと これを保持するフレームが熱膨張する。 それにより、 シャドウマスクの 開孔がシャドウマスクの周縁部に向かって微小な変位を生じ、 画面上で の色ずれの原因となる。 この色ずれを補正するため、 支持部材に、 シャ ドウマスクの開孔の位置を修正する機能をもたせる技術が一般に用いら れている。 そのような支持部材の一例として、 特開昭 6 2— 2 4 3 2号 公報に、 略 V字形状を有するスプリングが記載されている。 The color cathode ray tube has a color selection electrode such as a shadow mask or an aperture grill. The color selection electrode is held by the frame to form a color selection electrode structure, for example, a shadow mask structure. The shadow mask structure is fixed to the inner wall of the panel via a support member. When the color cathode ray tube is operated, the electron beam collides with the shadow mask, and the shadow mask and the frame holding it are thermally expanded. As a result, the aperture of the shadow mask causes a slight displacement toward the periphery of the shadow mask, which causes a color shift on the screen. In order to correct the color shift, a technique is generally used in which the support member has a function of correcting the position of the opening of the shadow mask. As an example of such a supporting member, a spring having a substantially V-shape is described in Japanese Patent Application Laid-Open No. 62-43232.
図 5に、 この技術を用いた従来のカラー陰極線管のスプリング部の拡 大断面図を示す。 4はパネルであり、 その内側に蛍光面 9を有する。 3 はシャドウマスク構体であり、 シャドウマスク 2がフレーム 1 0に保持 された構造を有する。 シャドウマスク構体 3は、 略 V字形のスプリング 1により、 パネル 4に支持されている。 スプリング 1は、 弾性を有する 可動部 l a、 および固定部 1 bからなる。 固定部 l bは、 フレーム 1 0
に溶接されている。 可動部 1 aの先端部は係止部 1 cを形成し、 係止部 l cが、 パネル 4に固着されたパネルピン 5に係止されている。 2 aは シャドウマスク 2の開孔領域の周縁を示す。 6はカラー陰極線管の管軸 であり、 7は電子ビームを示す。 Fig. 5 shows an enlarged cross-sectional view of the spring part of a conventional color cathode ray tube using this technology. Reference numeral 4 denotes a panel having a fluorescent screen 9 inside. Reference numeral 3 denotes a shadow mask structure, which has a structure in which a shadow mask 2 is held in a frame 10. The shadow mask structure 3 is supported by a panel 4 by a substantially V-shaped spring 1. The spring 1 includes an elastic movable part la and a fixed part 1b. Fixed part lb, frame 10 Is welded to. The distal end of the movable portion 1a forms a locking portion 1c, and the locking portion lc is locked to a panel pin 5 fixed to the panel 4. 2a indicates the periphery of the opening area of the shadow mask 2. 6 is the axis of the color cathode ray tube, and 7 is the electron beam.
スプリング 1がシャドウマスク構体 3の熱膨張に伴い弾性変形したと き、 スプリング 1と管軸 6のなす角度が変化する。 それにより、 シャド ゥマスク 2が蛍光面 9に接近し、 その結果、 電子ビームの偏向半角に応 じたシャドウマスク 2の各開孔の位置が修正される。 When the spring 1 is elastically deformed due to the thermal expansion of the shadow mask structure 3, the angle between the spring 1 and the tube axis 6 changes. Thereby, the shadow mask 2 approaches the phosphor screen 9, and as a result, the position of each opening of the shadow mask 2 according to the half angle of deflection of the electron beam is corrected.
この構造において、 スプリング 1の可動部 1 aの管軸 6に対する傾斜 角を α、 シャドウマスクの開孔領域の周縁 2 aを通過する電子ビーム 7 と管軸 6がなす角をァとしたとき、 In this structure, when the inclination angle of the movable portion 1a of the spring 1 with respect to the tube axis 6 is α, and the angle between the electron beam 7 passing through the peripheral edge 2a of the opening area of the shadow mask and the tube axis 6 is a,
t a n a>Am/A f X t a n (9 0 ° —ァ) t a n a> Am / A f X t a n (90 ° —a)
の関係が満たされる場合、 スプリング 1の動作により、 シャドウマスク 2の開孔の位置修正を効果的に行うことが可能である。 上記の式におい て、 Amはシャドウマスク 2の熱膨張率、 A f はフレーム 1 0の熱膨張 率である。 When the relationship is satisfied, the position of the opening of the shadow mask 2 can be effectively corrected by the operation of the spring 1. In the above equation, Am is the coefficient of thermal expansion of the shadow mask 2 and A f is the coefficient of thermal expansion of the frame 10.
ここで、 AmZA f ≥ 1の塌合は、上記構成による効果を得るために、 > (90 ° —ァ) 、 即ち、 (α +ァ) >90° Here, if AmZA f ≥ 1, in order to obtain the effect of the above configuration,> (90 ° —α), that is, (α + α)> 90 °
とする必要がある。 従って、 上記構成を、 例えば 9 0 ° 偏向のカラ一陰 極線管に適用する場合、 角ァは 4 5 ° であるため、 スプリング 1の傾斜 角ひは 4 5 ° 以上にする必要がある。 It is necessary to Therefore, when the above configuration is applied to, for example, a 90 ° polarized color cathode ray tube, the angle of inclination of the spring 1 must be 45 ° or more because the angle α is 45 °.
ところが、 高精細度のカラー陰極線管では、 シャドウマスク 2の開孔 領域が拡張され、 パネル 4とフレーム 1 0側壁の間に形成される空間が 小さくなつていることから、 次のような問題が発生した。 つまり、 傾斜 角ひの大きなスプリング 1を用いると、 製造工程でシャドウマスク構体 3の着脱を繰り返した際に、 スプリング 1の頂点部の近傍にかかる応力
が過大となって、 スプリング 1が塑性変形することがあった。 特に、 傾 斜角 αを 4 5 ° 以上にするとこの現象が顕著となり、 シャ ドウマスク構 体 3の取り付け精度が低下した。 However, in a high-definition color cathode ray tube, since the aperture area of the shadow mask 2 is expanded and the space formed between the panel 4 and the side wall of the frame 10 is reduced, the following problems occur. Occurred. In other words, when the spring 1 having a large inclination angle is used, the stress applied to the vicinity of the vertex of the spring 1 when the mounting and dismounting of the shadow mask structure 3 are repeated in the manufacturing process. Was excessively large, and the spring 1 was sometimes plastically deformed. In particular, when the inclination angle α was set to 45 ° or more, this phenomenon became remarkable, and the mounting accuracy of the shadow mask structure 3 was reduced.
また、 画面をフラット化するに伴い、 フレーム 1 0には高い剛性が要 求され、 それに伴って重量も増える。 そのため、 外部からフレーム 1 0 に衝撃が加わったとき、スプリング 1が過大な曲げモーメントを受けて、 塑性変形することがあった。 発明の開示 In addition, with the flattening of the screen, the frame 10 is required to have high rigidity, and accordingly, the weight increases. Therefore, when an external impact is applied to the frame 10, the spring 1 may receive an excessive bending moment and may be plastically deformed. Disclosure of the invention
本発明は、 色選別電極構体の熱膨張による色ずれを補正する機能を備 えた支持部材について、 製造工程における着脱や、 外部からの衝撃力に 起因して塑性変形を生じることを抑制して、 高精細度でフラットな画面 のカラー陰極線管への適用が容易なように改良することを目的とする。 本発明のカラー陰極線管は、 蛍光面が形成されたパネルと、 前記パネ ルに接合されたファンネルと、 前記ファンネルに設けられた電子銃と、 前記蛍光面に対向して設置された色選別電極構体と、 前記色選別電極構 体を前記パネルに固定するための略 V字形状を有する支持部材とを備え る。 前記支持部材は弾性を有し、 前記略 V字形状の一方の腕である固定 部の先端部が前記色選別電極構体の側面に固定され、 他方の腕である可 動部の先端部が前記パネルに係止されている。上記課題を解決するため、 前記支持部材の略 V字形状の頂点部は、 前記色選別電極構体における前 記固定部が固定された側面よりも管軸側にずれて位置している。 The present invention provides a support member having a function of correcting a color shift caused by thermal expansion of a color selection electrode assembly, by suppressing attachment / detachment in a manufacturing process and plastic deformation caused by an external impact force. It is intended to improve the application so that it can be easily applied to a color cathode ray tube having a high definition and flat screen. A color cathode ray tube according to the present invention includes a panel on which a fluorescent screen is formed, a funnel joined to the panel, an electron gun provided on the funnel, and a color selection electrode installed facing the fluorescent screen. And a support member having a substantially V shape for fixing the color selection electrode assembly to the panel. The support member has elasticity, and a tip of a fixed portion, which is one of the substantially V-shaped arms, is fixed to a side surface of the color selection electrode assembly, and a tip of a movable portion, which is the other arm, is the arm. Locked to the panel. In order to solve the above-mentioned problem, the substantially V-shaped apex portion of the support member is located on the tube axis side with respect to a side surface of the color selection electrode assembly where the fixing portion is fixed.
この構成によれば、 色選別電極の開孔位置の修正が効果的に行われ、 高精度のカラー陰極線管が実現される。 さらに、 高剛性のフレームを用 いても、 支持部材が受ける曲げモーメントが小さく、 画面のフラット化 が容易である。
前記略 V字形状の頂点部が、 前記パネルの側に向けて配置されている 構成とすることができる。 According to this configuration, the aperture position of the color selection electrode is effectively corrected, and a highly accurate color cathode ray tube is realized. Furthermore, even when a high-rigidity frame is used, the bending moment received by the support member is small, and the screen can be easily flattened. The substantially V-shaped apex portion may be arranged to face the panel.
前記色選別電極構体の側面には、 前記支持部材の固定部が固定された 面よりも前記管軸側に窪んだ凹部が形成され、 前記支持部材の略 V字形 状の頂点部が、 前記凹部に進入した位置に配置された構成とし、 それに より、 前記略 V字形状の頂点部を、 前記固定部が固定された前記色選別 電極構体の側面よりも管軸側にずらして位置させることができる。 好ましくは、 前記支持部材の固定部および可動部は各々屈曲し、 その 屈曲は、 前記頂点部側が前記管軸側に変位するように形成されている構 成とする。 図面の簡単な説明 A concave portion is formed on a side surface of the color selection electrode assembly, the concave portion being recessed on the tube axis side from a surface on which the fixing portion of the support member is fixed, and a substantially V-shaped apex portion of the support member is formed by the concave portion. In such a configuration, the substantially V-shaped apex portion is shifted toward the tube axis with respect to the side surface of the color selection electrode assembly to which the fixing portion is fixed. it can. Preferably, the fixed part and the movable part of the support member are each bent, and the bend is formed such that the apex side is displaced toward the tube axis side. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 本発明の実施の形態におけるカラー陰極線管の断面図、 図 2は、 図 1のカラー陰極線管の一部を拡大して示した断面図、 図 3 Aは、 図 1のカラー陰極線管におけるシャドウマスク構体を支持 するスプリングの部分の拡大断面図、 1 is a cross-sectional view of a color cathode ray tube according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing an enlarged part of the color cathode ray tube of FIG. 1, and FIG. 3A is a color cathode ray tube of FIG. An enlarged sectional view of a portion of a spring supporting a shadow mask structure in the pipe,
図 3 Bは、 従来例のカラー陰極線管におけるシャドウマスク構体を支 持するスプリングの部分の拡大断面図、 FIG. 3B is an enlarged cross-sectional view of a spring supporting the shadow mask structure in the conventional color cathode ray tube.
図 4 Aは、 曲面形状のシャドウマスクを有するシャドウマスク構体の 斜視図、 FIG. 4A is a perspective view of a shadow mask structure having a curved shadow mask,
図 4 Bは、 張力を付与され支持されたシャドウマスクを有するシャド ゥマスク構体の斜視図、 FIG. 4B is a perspective view of a shadow mask structure having a tensioned and supported shadow mask,
図 5は、 従来例のカラー陰極線管の一部を拡大して示した断面図 である。 発明を実施するための最良の形態
以下に、本発明の実施の形態について、図面を参照しながら説明する。 図 1は、 本実施の形態におけるカラー陰極線管の断面図である。 この力 ラー陰極線管は、 フラットな形状のパネル 4と、 パネル 4に接合された ファンネル 8を備える。 パネル 4の内面には、 蛍光面 9が形成されてい る。 シャドウマスク構体 3は、 表面に多数の開孔が形成されたシャドウ マスク 2と、 シャドウマスク 2を張力を付与して保持する略矩形形状の フレーム 1 0 aより構成されている。 フレーム 1 0 aは、 パネル 4の長 手方向における両側面のほぼ中央部において、 スプリング 1 1とパネル ピン 5を介してパネル 4に固定されている。 ファンネル 8のネック部 1 3には、 電子銃 (図示せず) が設けられている。 電子銃から出射された 電子ビーム 7が、 シャドウマスク 2の開孔を通過して蛍光面 9に照射さ れることにより、 カラー陰極線管に像が表示される。 6は管軸であり、 蛍光面 9に垂直で、 かつパネル 4のほぼ中央を通る。 FIG. 5 is an enlarged sectional view of a part of a conventional color cathode ray tube. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a color cathode ray tube according to the present embodiment. The color cathode ray tube has a flat panel 4 and a funnel 8 joined to the panel 4. A fluorescent screen 9 is formed on the inner surface of panel 4. The shadow mask structure 3 includes a shadow mask 2 having a large number of apertures formed on the surface thereof, and a substantially rectangular frame 10a for holding the shadow mask 2 by applying tension. The frame 10 a is fixed to the panel 4 via a spring 11 and a panel pin 5 at substantially the center of both sides in the longitudinal direction of the panel 4. The neck 13 of the funnel 8 is provided with an electron gun (not shown). The electron beam 7 emitted from the electron gun passes through the aperture of the shadow mask 2 and irradiates the fluorescent screen 9, whereby an image is displayed on the color cathode ray tube. Reference numeral 6 denotes a tube axis, which is perpendicular to the phosphor screen 9 and passes through almost the center of the panel 4.
図 2に、 シャドウマスク構体 3をパネル 4に固定する部分の拡大断面 図を示す。 電子ビーム 7は、 シャドウマスク 2の開孔領域の周縁 2 aに 到る場合が示される。 フレーム 1 0 aの側面には凹部 1 2が、 電子ビー ム 7を遮らないように形成されている。 シャドウマスク構体 3は、 略 V 字形のスプリング 1 1を介してパネル 4に固定されている。 スプリング 1 1は、 折り曲げた 2枚の板状体の一端部が溶接されて頂点部 1 4を形 成した構造を有する。 頂点部 1 4を通り、 管軸 6と平行な方向を 6 aで 示す。 一方の腕をなす板状体が可動部 1 1 a、 他方の腕をなす板状体が 固定部 1 1 bをそれぞれ形成している。 可動部 1 1 aおよび固定部 1 1 bは、それぞれ長手方向中央部において屈曲している。固定部 1 1 bは、 屈曲箇所よりも先端側における溶接点 1 5において、 フレーム 1 0 aの 側面に固着されている。 可動部 1 1 aは、 屈曲箇所よりも先端側を形成 する係止部 1 1 cにおいて、 パネルピン 5に係止されている。
可動部 1 1 aは、 方向 6 aに対して α 1の傾斜角を有する。 固定部 1 l bは、 屈曲箇所よりも頂点部 1 4の側で、 方向 6 aと角 ]3をなす。 頂 点部 1 4は凹部 1 2に進入して、 溶接点 1 5よりも管軸 6側にずれて位 置している。 FIG. 2 shows an enlarged cross-sectional view of a portion where the shadow mask structure 3 is fixed to the panel 4. The case where the electron beam 7 reaches the periphery 2 a of the opening area of the shadow mask 2 is shown. A concave portion 12 is formed on the side surface of the frame 10 a so as not to block the electron beam 7. The shadow mask structure 3 is fixed to the panel 4 via a substantially V-shaped spring 11. The spring 11 has a structure in which one end of two bent plate-like members is welded to form a vertex 14. The direction parallel to the tube axis 6 through the vertex 14 is indicated by 6a. The plate forming one arm forms the movable portion 11a, and the plate forming the other arm forms the fixed portion 11b. The movable portion 11a and the fixed portion 11b are bent at the center in the longitudinal direction. The fixing portion 11b is fixed to the side surface of the frame 10a at the welding point 15 on the tip side of the bent portion. The movable portion 11a is locked to the panel pin 5 at a locking portion 11c that forms a distal end side of the bent portion. The movable part 11a has an inclination angle of α1 with respect to the direction 6a. The fixing part 1 lb forms a corner 3 with the direction 6 a on the side of the vertex part 14 from the bent part. The top portion 14 enters the concave portion 12 and is shifted to the pipe shaft 6 side from the welding point 15.
図 3 Aは、 スプリング 1 1の周辺の断面図である。 図 3 Bは、 従来技 術の場合のスプリング 1の周辺の断面図である。 各参照符号により示す 部材および角度は、 それぞれ図 2および図 5において同一の参照符号で 示したものと対応している。 図 3 Aに示す本実施の形態におけるスプリ ング 1 1の傾斜角 α 1は、 図 3 Βに示す従来技術のスプリング 1の傾斜 角ひ 2と等しく設定されている。 FIG. 3A is a cross-sectional view around the spring 11. FIG. 3B is a cross-sectional view around the spring 1 in the case of the conventional technology. The members and angles indicated by the respective reference numerals correspond to those indicated by the same reference numerals in FIGS. 2 and 5, respectively. The inclination angle α 1 of the spring 11 in the present embodiment shown in FIG. 3A is set equal to the inclination angle 2 of the conventional spring 1 shown in FIG.
図 3 Αにおいて、 スプリング 1 1の固定部 1 1 bと係止部 1 1 cの間 隔を X (mm) とする。 スプリング 1 1のオフセット量、 即ち、 略 V字 形のスプリング 1 1の頂点部 1 4が、 溶接点 1 5よりも管軸側にずれた 距離を Y (mm) とする。 固定部 1 1 bの肉厚を t (mm) とする。 本 実施の形態では、 可動部 1 1 aの長さ Z 1は、 In FIG. 3。, the distance between the fixed portion 11 b of the spring 11 and the locking portion 11 c is X (mm). Let Y (mm) be the offset amount of the spring 11, that is, the distance between the apex 14 of the substantially V-shaped spring 11 and the pipe shaft side from the welding point 15. The thickness of the fixed part 1 1b is t (mm). In the present embodiment, the length Z 1 of the movable portion 11 a is
Z 1 = ( X + t + Y ) / s i n ( 1 ) Z 1 = (X + t + Y) / s i n (1)
となる。 これに対して、 図 3 Bに示す従来技術では、 可動部 1 1 aの長 さ Z 2は、 Becomes On the other hand, in the prior art shown in FIG. 3B, the length Z 2 of the movable portion 11 a is
Z 2 = X / s i n ( 2 ) Z 2 = X / s i n (2)
である。 α 1 = α 2であるから、 Ζ 1〉Ζ 2である。 It is. Since α 1 = α 2, Ζ1> Ζ2.
一般に、 シャドウマスク構体 3をパネル 4に着脱する際のスプリング 1 1の塑性変形量は、 可動部 1 1 aの長さに反比例することから、 本実 施の形態では、従来技術と比べ、スプリング 1 1の塑性変形量は小さい。 従って、 シャドウマスク構体 3の着脱を繰り返しても、 その取り付け位 置の精度は高いまま維持される。 Generally, the amount of plastic deformation of the spring 11 when the shadow mask assembly 3 is attached to and detached from the panel 4 is inversely proportional to the length of the movable portion 11a. 11 plastic deformation is small. Therefore, even if the shadow mask structure 3 is repeatedly attached and detached, the accuracy of the attachment position is kept high.
また、 図 3 Aに示すように、 カラー陰極線管のパネル (図示せず) に
外部から衝撃が加わると、 スプリング 1 1に力 Fが作用する。 それによ り、 力 Fの管軸に垂直な方向の成分 F y 1 =F X s i n (ひ 1 ) が、 固 定部 1 1 bに曲げ応力として作用する。 従来技術において同様の力 Fが 作用したときは、 図 3 Bに示すように、 曲げ応力 F y 2は、 F X s i n ( 2 ) となる。 力 Fは、 角度 α以外のスプリングの形状に依存しない ことから、 ひ 1 = α 2の場合は、 F y l = F y 2である。 一方、 本実施 の形態では、 固定部 1 1 bは頂点部 1 4側で管軸から角 /3傾斜 (図 2参 照) しているため、 固定部 1 1 bの頂点部 1 4側における断面 2次モー メントは、 従来技術のそれの (lZc o s /3) 3倍になる。 したがって、 本実施の形態では、 同じ大きさの外部衝撃を受けたときの固定部 1 1 b の曲げ量が低減するので、 シャドウマスク構体 3の取付位置のずれが生 じ難くなる。 Also, as shown in Fig. 3A, the panel (not shown) of the color cathode ray tube is When an external impact is applied, a force F acts on the spring 11. As a result, the component F y 1 = FX sin (h 1) in the direction perpendicular to the tube axis of the force F acts as a bending stress on the fixed portion 11b. When a similar force F is applied in the prior art, the bending stress F y2 becomes FX sin (2), as shown in FIG. 3B. Since the force F does not depend on the shape of the spring other than the angle α, if 1 = α2, then Fyl = Fy2. On the other hand, in the present embodiment, since the fixed portion 11b is inclined at an angle of / 3 from the pipe axis at the vertex portion 14 side (see FIG. 2), the fixed portion 11b at the vertex portion 14 side of the fixed portion 11b is formed. The cross-sectional secondary moment is (lZcos / 3) three times that of the prior art. Therefore, in the present embodiment, the amount of bending of the fixed portion 11b when receiving an external impact of the same magnitude is reduced, so that the mounting position of the shadow mask structure 3 is less likely to shift.
本実施の形態では、 図 2に示したように、 電子銃から照射される電子 ビーム 7の軌道を遮らないようにする限り、 フレーム 1 0 aの側部に設 けた凹部 1 2を深くすることができる。 凹部 1 2を深くするほど、 スプ リング 1 1のオフセット量をより大きくして、 画面の色ずれの補正効果 を高めることができる。 In this embodiment, as shown in FIG. 2, as long as the trajectory of the electron beam 7 emitted from the electron gun is not interrupted, the concave portion 12 provided on the side of the frame 10a must be deepened. Can be. The deeper the concave portion 12 is, the larger the offset amount of the spring 11 can be, and the more effective the correction of the color shift of the screen can be.
本実施の形態は、 多様な形態の色選別電極構体に適用することができ る。 例えば、 図 4 Aに示すように、 曲面状に成型されたシャドウマスク 1 6を略矩形状のフレーム 1 0 aにより支持した形態に適用することも できる。 あるいは図 4 Bに示すように、 矢印の方向に張力が付与された シャドウマスク 1 7を、 上下一対のフレーム 1 8とこれを支える補助フ レーム 1 9により支持した形態に適用することもできる。 なお、 図 4 B に示す形態では、 シャドウマスク 1 7と補助フレーム 1 9との間に空間 が形成される。 従って、 図 2に示したようなスプリング 1 1を補助フレ ーム 1 9の側面に取り付けて、 当該空間にスプリング 1 1の略 V字形の
頂点部 1 4が配置されるようにすれば、 上述した実施の形態の構成と同 等な作用、 効果が得られ、 この場合は、 フレームの側面に凹部を設ける ことが不要になる。 This embodiment can be applied to various types of color selection electrode assemblies. For example, as shown in FIG. 4A, a form in which a shadow mask 16 formed into a curved surface is supported by a substantially rectangular frame 10a can be applied. Alternatively, as shown in FIG. 4B, a configuration in which a shadow mask 17 to which tension is applied in the direction of the arrow is supported by a pair of upper and lower frames 18 and an auxiliary frame 19 supporting the same is also applicable. In the embodiment shown in FIG. 4B, a space is formed between the shadow mask 17 and the auxiliary frame 19. Therefore, the spring 11 as shown in FIG. 2 is attached to the side of the auxiliary frame 19, and the substantially V-shaped If the apex portion 14 is arranged, the same operation and effect as those of the above-described embodiment can be obtained. In this case, it is not necessary to provide a recess on the side surface of the frame.
スプリングは、 フレームの長手方向側面に限らず、 安定に固定される 限り、 コーナー部等のいずれの部位に配置されてもよい。 スプリングの 使用数は、 シャドウマスク構体の大きさや重量、 パネルへの取り付け位 置によって適宜変更することができる。 The spring is not limited to the longitudinal side surface of the frame, and may be arranged at any portion such as a corner portion as long as it is stably fixed. The number of springs used can be changed as appropriate according to the size and weight of the shadow mask structure and its mounting position on the panel.
また、 スプリング 1 1は、 本実施の形態のように、 板状体をその 2個 所で折り曲げた形状のものに限られない。略 V字形になる限り、例えば、 三箇所以上で折り曲げられた形状のものを用いても良いし、 弓なりに湾 曲した形状のものを用いても良い。 Further, the spring 11 is not limited to a shape in which a plate-like body is bent at two positions as in the present embodiment. As long as it is substantially V-shaped, for example, a shape bent at three or more places may be used, or a shape bent in a bow may be used.
本実施の形態により説明したような、 色選別電極としてシャドウマス クを用いた場合に限らず、 本発明は、 例えばスリット状の孔を有するァ パーチヤグリル等、 他の構造の色選別電極を用いたカラー陰極線管にも 同様に適用できる。 The invention is not limited to the case where a shadow mask is used as a color selection electrode as described in the present embodiment, but the present invention uses a color selection electrode having another structure such as an aperture grill having slit-shaped holes. The same applies to color cathode ray tubes.
以下に、 カラー陰極線管の作製例について説明する。 以下に示す例で は、 スクリーンサイズ 3 4インチ (8 0 c m) 、 シャドウマスクピッチ 0 . 5 8 mm, 厚さ 1 . 8 mmのカラー陰極線管を作製した。 シャドウ マスク構体のフレームには、 高さ 5 0 mm、 肉厚 1 . 8 mmのものを用 いた。 Hereinafter, an example of manufacturing a color cathode ray tube will be described. In the example shown below, a color cathode ray tube having a screen size of 34 inches (80 cm), a shadow mask pitch of 0.58 mm, and a thickness of 1.8 mm was manufactured. The frame of the shadow mask structure was 50 mm high and 1.8 mm thick.
(本実施の形態に基づく例) (Example based on this embodiment)
図 3 Aに示したように、 フレーム 1 0 aのコーナー部の側面に、 高さ 1 5 mm, 幅 3 5 mm、 奥行き 3 mmの凹部 1 2を設けた。 スプリング 1 1は、 係止部 1 1 cを含む可動部 1 1 aを、 幅 3 0 mm、 肉厚 0 . 5 mmとし、 固定部 1 2 cを、 幅 3 O mm、 肉厚 1 . 4 mmとした。 頂点 部 1 4を凹部 1 2内に位置させることにより、 溶接点 1 5よりも管軸 6
側にオフセッ卜させて、 スプリング 1 1をフレーム 1 0 aのコーナ一部 に取り付けた。図 3 Aにおける傾斜角ひ l 、 i3は、それぞれ α 1 = 4 5 ° 、 3 = 5 ° とし、 また、 距離 Xは 3 0 mm、 オフセット量 Yは 2 . 4 mm とした。 As shown in FIG. 3A, a recess 12 having a height of 15 mm, a width of 35 mm, and a depth of 3 mm was provided on the side surface of the corner of the frame 10a. The spring 11 has a movable part 11a including a locking part 11c having a width of 30 mm and a wall thickness of 0.5 mm, and a fixed part 12c having a width of 30 mm and a wall thickness of 1.4. mm. Positioning the top 14 in the recess 12 allows the pipe shaft 6 to be The spring 11 was attached to a part of the corner of the frame 10a. In FIG. 3A, the inclination angles l and i3 were α1 = 45 ° and 3 = 5 °, respectively. The distance X was 30 mm, and the offset amount Y was 2.4 mm.
この状態でカラー陰極線管を動作させたところ、 電子ビームのスポッ ト位置の基準値からのシフト量は、 シャドウマスクの開孔領域の周縁に おいて 5 mであった。 シャドウマスク構体 3の着脱を繰り返したとこ ろ、 シャドウマスク構体 3の固定位置の基準値からのシフト量は 1 0 mであり、品質保証できる許容値 2 0 以下に抑制されていた。また、 カラー陰極線管のパネルに 2 5 Gの衝撃を与えたところ、 電子ビームの シフト量は 1 0 mであり、 品質保証できる許容値 3 0 m以下に抑制 されていた。 なお、 これら許容範囲は、 シャドウマスクの熱膨張、 地磁 気の影響等を考慮して設定された値である。 When the color cathode ray tube was operated in this state, the shift amount of the spot position of the electron beam from the reference value was 5 m at the periphery of the opening area of the shadow mask. When the mounting and dismounting of the shadow mask structure 3 was repeated, the shift amount of the fixed position of the shadow mask structure 3 from the reference value was 10 m, which was suppressed to the allowable value of 20 or less for quality assurance. When a 25 G impact was applied to the panel of the color cathode ray tube, the shift amount of the electron beam was 10 m, which was suppressed to 30 m or less, which is the allowable value for quality assurance. These allowable ranges are values set in consideration of the thermal expansion of the shadow mask, the influence of geomagnetism, and the like.
(比較例) (Comparative example)
図 3 Bに示したように、フレーム 1 0には側面に凹部を設けず、また、 スプリング 1は、 固定部 1 bが平板状のものを用いた。 また、 図 3 Bに おける距離 Xは、 X = 1 O mmとし、傾斜角ひ 2は、 α = 4 5 ° とした。 As shown in FIG. 3B, the frame 10 was not provided with a concave portion on the side surface, and the spring 1 used had a fixed portion 1b having a flat plate shape. Further, the distance X in FIG. 3B was set to X = 1 O mm, and the inclination angle 2 was set to α = 45 °.
この状態でカラ一陰極線管を動作させたところ、 電子ビームのスポッ ト位置の基準値からのシフト量は、 実施の形態に基づく例と同様に、 開 孔領域の周縁において 5 mであった。 シャドウマスク構体 3の着脱を 繰り返した所、 シャドウマスク構体 3の固定位置の基準値からのシフト 量は 5 0 mとなり、 品質保証できる許容値 2 0 mを越えた。 また、 カラ一陰極線管のパネルに 2 5 Gの衝撃を与えたところ、 電子ビームの シフト量は 4 0 mとなり、 品質保証できる許容値 3 0 x mを越えた。 産業上の利用の可能性
本発明によれば、 スプリングの傾斜角を大きくでき、 可動部の寸法も 長くとれることから、色選別電極の開孔の位置の修正が効果的に行われ、 高精度のカラー陰極線管が実現される。 さらに、 高剛性のフレームを用 いた場合でも、 衝撃によってスプリングが受ける曲げモーメントを小さ く抑制することができ、 高精度のカラ一陰極線管において、 画面のフラ ット化が容易である。
When the empty cathode ray tube was operated in this state, the shift amount of the spot position of the electron beam from the reference value was 5 m at the periphery of the aperture region, as in the example based on the embodiment. When the mounting and dismounting of the shadow mask structure 3 was repeated, the shift amount of the fixed position of the shadow mask structure 3 from the reference value was 50 m, which exceeded the allowable value of 20 m for quality assurance. In addition, when a 25 G impact was applied to the panel of the color cathode ray tube, the shift amount of the electron beam was 40 m, exceeding the allowable value of 30 xm, which can guarantee the quality. Industrial applicability ADVANTAGE OF THE INVENTION According to this invention, since the inclination angle of a spring can be enlarged and the dimension of a movable part can be lengthened, the correction | amendment of the position of the opening of a color selection electrode is performed effectively, and a high-precision color cathode ray tube is realized. You. Furthermore, even when a high-rigidity frame is used, the bending moment received by the spring due to the impact can be suppressed to a small value, and it is easy to flatten the screen in a high-precision color cathode ray tube.
Claims
1 . 蛍光面が形成されたパネルと、 前記パネルに接合されたフアンネ ルと、 前記ファンネルに設けられた電子銃と、 前記蛍光面に対向して設 置された色選別電極構体と、 前記色選別電極構体を前記パネルに固定す るための略 V字形状を有する支持部材とを備え、 前記支持部材は弹性を 有し、 前記略 V字形状の一方の腕である固定部の先端部が前記色選別電 極構体の側面に固定され、 他方の腕である可動部の先端部が前記パネル に係止されているカラー陰極線管において、 1. A panel on which a phosphor screen is formed, a funnel joined to the panel, an electron gun provided on the funnel, a color selection electrode assembly disposed opposite to the phosphor screen, and the color A support member having a substantially V-shape for fixing the selection electrode assembly to the panel, wherein the support member has a property, and a distal end portion of a fixing portion, which is one of the substantially V-shaped arms, is provided. In a color cathode ray tube fixed to a side surface of the color selection electrode assembly and having a tip of a movable portion, which is the other arm, locked to the panel,
前記支持部材の略 V字形状の頂点部は、 前記色選別電極構体における 前記固定部が固定された側面よりも管軸側にずれて位置していることを 特徴とするカラー陰極線管。 A color cathode ray tube, wherein a substantially V-shaped apex portion of the support member is shifted toward a tube axis side from a side surface of the color selection electrode assembly where the fixing portion is fixed.
2 . 前記略 V字形状の頂点部が前記パネルの側に向けて配置されてい る請求項 1に記載の力ラー陰極線管。 2. The cathode ray tube according to claim 1, wherein the substantially V-shaped apex portion is arranged toward the panel.
3 . 前記色選別電極構体の側面には、 前記支持部材の固定部が固定さ れた面よりも前記管軸側に窪んだ凹部が形成され、 前記支持部材の略 V 字形状の頂点部が、 前記凹部に進入した位置に配置されることにより、 前記略 V字形状の頂点部が、 前記固定部が固定された前記色選別電極構 体の側面よりも管軸側にずれて位置している請求項 1に記載のカラー陰 極線管。 3. On the side surface of the color selection electrode assembly, a concave portion is formed which is recessed on the tube axis side from the surface on which the fixing portion of the support member is fixed, and a substantially V-shaped apex portion of the support member is formed. By being arranged at a position where it has entered the concave portion, the substantially V-shaped apex portion is shifted toward the tube axis side from the side surface of the color selection electrode assembly to which the fixing portion is fixed. The color cathode ray tube according to claim 1, wherein
4 . 前記支持部材の固定部および可動部は各々屈曲し、 その屈曲は、 前記頂点部側が前記管軸側に変位するように形成されている請求項 1に 記載のカラー陰極線管。
4. The color cathode ray tube according to claim 1, wherein the fixed part and the movable part of the support member are each bent, and the bend is formed such that the apex side is displaced toward the tube axis side.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002/42093 | 2002-02-19 | ||
JP2002042093A JP2003242900A (en) | 2002-02-19 | 2002-02-19 | Color cathode ray tube |
Publications (1)
Publication Number | Publication Date |
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WO2003071573A1 true WO2003071573A1 (en) | 2003-08-28 |
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ID=27750485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/001621 WO2003071573A1 (en) | 2002-02-19 | 2003-02-17 | Color cathode ray tube |
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JP (1) | JP2003242900A (en) |
WO (1) | WO2003071573A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007027183A1 (en) * | 2005-08-30 | 2007-03-08 | Thomson Licensing | Spring for connecting a support frame to panel studs within a cathode ray tube |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5146917Y1 (en) * | 1968-11-01 | 1976-11-12 | ||
JPS63158731A (en) * | 1986-12-22 | 1988-07-01 | Toshiba Corp | Color cathode-ray tube |
JPS63160135A (en) * | 1986-12-24 | 1988-07-02 | Toshiba Corp | Color cathode-ray tube |
-
2002
- 2002-02-19 JP JP2002042093A patent/JP2003242900A/en active Pending
-
2003
- 2003-02-17 WO PCT/JP2003/001621 patent/WO2003071573A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5146917Y1 (en) * | 1968-11-01 | 1976-11-12 | ||
JPS63158731A (en) * | 1986-12-22 | 1988-07-01 | Toshiba Corp | Color cathode-ray tube |
JPS63160135A (en) * | 1986-12-24 | 1988-07-02 | Toshiba Corp | Color cathode-ray tube |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007027183A1 (en) * | 2005-08-30 | 2007-03-08 | Thomson Licensing | Spring for connecting a support frame to panel studs within a cathode ray tube |
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JP2003242900A (en) | 2003-08-29 |
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