TW423010B - Color cathode ray tube - Google Patents

Abstract

A shadow mask opposed to a phosphor screen of a panel has a rectangular mask body and a rectangular mask frame fixed to the periphery of the mask body. The mask body has a pair of long side edges and a pair of short side edges, and the long side edges are respectively welded to the long side walls of the mask frame while the short side edges are respectively welded to the short side walls of the mask frame. The long and short side walls of the mask frame are respectively supported on the panel by mask holders. Each mask holder has a fixed portion welded to the mask frame and an engaging portion engaged with a stud pin of the panel. Welding positions between the long side edges of the mask body and the long side walls of the mask frame are shifted from the short axis, and welding positions between the short side edges of the mask body and the short side walls of the mask frame are shifted from the long axis.

Description

4280 1 0 A7 ___ _B7_ V. Description of the invention (1) [Background of the invention] The present invention relates to a color cathode ray tube provided with a shadow mask. —In general, the color cathode ray tube is provided with a slightly rectangular panel and a funnel (shaped) tube wave sealer arranged at the peripheral portion, and an inner surface of the panel is provided with an individual light emitting device. A fluorescent screen formed by three-color fluorescent layers of red, blue and green. Inside the neck of the funnel tube, an electron gun for emitting an electron beam toward a fluorescent screen is provided. On the inside of the fluorescent screen, a shadow mask is disposed opposite to the fluorescent screen at a predetermined interval. The color cathode-ray tube described above deflects (deflects) the electron beam emitted from the electron gun. When the device is used to deflect, the shadow mask is used to select (select), and the fluorescent screen is scanned horizontally and vertically to display a color image. The shadow mask is provided with a substantially rectangular masking body that forms a large number of electron beam through holes facing the fluorescent screen, and a rectangular masking frame welded to the periphery of the masking body A plate-shaped frame holder is welded to the side wall of the masking frame. The shadow mask is used to lock the frame holder to the stud pin arranged on the skirt of the panel, so that it is supported on the inside of the panel. As the assembly structure for the mask body of the mask frame, it is used by most people Constructor who welded the corners of the mask body and one or more points near the center of each side "Also as a support structure for the shadow mask of the panel, there is a kind of welded to the side of the mask frame It is supported by a plate-shaped frame holder at the center of the strategy. Generally, in such a shadow cover and its supporting structure, cover the body and --------. East ------ · π ------ you. (锖 Please read the note on the back first Please fill in this item again) This paper is once again the National Standard of Chuzhou Zhongli (CNS) Α4 size (210 × 297 mm) -4-* ί 浐 部 屮 央 41 * Γι? ·· = ;. τίίί cooperation = il Printing ^ 2301〇A7 B7 V. Description of the invention (2) The masking frame avoids the welding point of the masking frame and the masking holder, and is welded at a position slightly away from the locking pin side of the masking holder. On the other hand, in a color cathode ray tube, the electron beams that can be incident on the fluorescent screen out of the electron beams emitted by the electron gun are only 30% or less of the whole. Most of the other electron beams will be Hit the shadow mask. The motion energy of the electron beam will be transformed into thermal energy and will heat the shadow mask and the frame holder. When the shadow mask is thermally expanded by the heating, the light spot of the electron beam formed by the shadow mask (concentration) The relative positional relationship between the beam spot) and the three-color fluorescent layer is disjointed (shifted), that is, the electron beams of the fluorescent layer are disjointed, and as a result, the color purity is deteriorated. The land shift of such an electron beam includes the initial land shift of the color cathode ray tube, which is mainly caused by the thermal expansion of the mask body when it is heated, and when the color cathode ray tube is operated for a long time, Those that are heated to transfer the heat of the masking body to the masking frame or frame holder · Land shift (long-term purity shift) caused by the thermal expansion of the masking frame or frame holder. In order to reduce the land shift caused by the thermal expansion of the shadow mask, instead of the commonly used masking body formed of soft steel, the user uses a low thermal expansion masking body formed of steel (iron-nickel alloy). . In such a case, the thermal expansion of the masking body itself can be suppressed to be small. However, the thermal expansion of the masking frame and the frame holder during long-term operation will cause the masking body to locally move up, down, left and right, and rotation direction. The displacement in the asymmetric direction will cause the so-called three-color --------: ^ ------ 1T ------ 4 {谙 Read the precautions on the back before filling (This page) This paper standard is applicable to China National Standard (CNS) A4 specification (2 丨 0 > < 297 mm) -5- 42301 A7 ___B7 V. Description of the invention (3) Electron beam landing of the phosphor layer | The phenomenon of asymmetrical displacements of up, down, left and right, rotation direction, etc. (please read the precautions on the back before filling this page), that is, the thermal expansion of the heated masking body, when it is not assembled in the masking frame At this time, thermal expansion can be symmetrically generated in the direction of radiation, so in principle, * does not shift in asymmetric directions such as up, down, left and right, and rotation directions. Therefore, the above directions are up, down, left, and rotation directions. Equivalent asymmetric direction offset can be presumed as Produced in the assembly structure of the masking frame of the masking body and the supporting structure of the shadow mask. "If the masking body is formed of low thermal expansion steel, the masking frame is formed of mild steel, and the frame holder is a shadow mask formed of stainless steel. When discussed, the thermal expansion of the masking body will become a small thermal expansion of about 1/1 0 of the thermal expansion of the masking frame. For this reason, when the shadow mask generates thermal expansion, the masking body will be thermally expanded toward the outside by the masking frame It is pulled, but in fact, the thermal expansion of the masking frame will be absorbed by the skirt of the masking body, which will not substantially affect the effective part of the masking body. However, the thermal expansion of the masking frame will not affect, for example, the masking frame. The welding (welding) point on the short side of the masking body will move in the up and down direction (Y-axis direction). As a result, the short side of the masking body will be displaced (shifted) in the up and down direction. Similarly, in the masking body, Peripheral part of the long side | The thermal expansion of the masking frame can be shifted in the left-right direction (X-axis direction). The peripheral part of the masking body will be shifted by these vertical directions As a whole, a deviation in the direction of rotation is caused. Therefore, in the above-mentioned color cathode ray tube, the landing of the electron beam of the three-color fluorescent layer will be generated upwards and downwards, and left and right, the paper is rotated. Standards apply to Chinese national standard cars (CNS > A4 specification (210X297 mm) -6- Central of the Ministry of Education ί.τ. ^-^ Π T; Consumption cooperation ii India «" 423010 A7 B7 V. Description of the invention (4) In the thermal expansion of the masking frame and the masking holder, the thermal expansion of the masking frame causes the light spot to move toward the outer periphery of the screen. The deterioration can be suppressed to a certain extent by adjusting the electron beam toward the inner periphery of the screen at the adjustment stage when the color cathode ray tube is unloaded, assuming a high brightness state to be used. However, the deterioration of color purity caused by the effect of the masking holder at high brightness is due to the structural relationship of the color cathode ray tube, and the rotation direction of the electron beam cannot be adjusted when the load is adjusted, so that it cannot be adjusted. The deterioration of color purity in the rotation direction is adjusted in advance to suppress it. [Abstract of the Invention] The present invention was invented to solve the above-mentioned problems. Its purpose is to provide a color cathode ray tube which can reduce the offset of the electron beam landing caused by the thermal expansion of the masking frame and the frame holder to the fluorescent layer, and can improve the color purity. In order to achieve the above-mentioned object, the color cathode ray tube of the present invention is provided with: having a long axis and a short axis orthogonal to each other (vertical intersection) through the tube axis, and a strategy of arranging a fluorescent screen on the inner surface A rectangular effective portion and a substantially rectangular skirt portion provided along the side edge of the effective portion, and the skirt portion is provided with panels facing four side walls extending in parallel with the long axis and the short axis, respectively; It is fixed to the above skirt, and is located on the above long axis and short axis respectively. -------- install-(please read the precautions on the back before filling this page)

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i A This paper size applies to the national solid standard of China {CNS specification (210X297), 4230 1 0 A7 __ B7 V. Description of the invention (5) Stud pin; A slightly rectangular mask body and a shadow mask with a substantially rectangular mask frame fixed to the periphery of the mask body, and the mask body has a long axis and a short axis corresponding to the major and minor axes of the panel, and One pair of long sides parallel to the long axis and one pair of short sides parallel to the short axis. The masking frame is individually welded (welded) to the long side of the masking body and is slightly parallel to the opposite pair. Long side walls, and a pair of short side walls that are each welded to the side of the masking body and are slightly parallel to the opposite side: and at least 3 side walls that are arranged on the masking frame to support the shadow mask for the panel A plurality of masking holders, each of which includes a fixed portion welded to the masking frame and a engaging portion engaged with the corresponding pin, and extends toward the length of the side wall of the masking frame. The above masking The welding position of the long side of the body and the long side wall of the masking frame is offset from the short axis, and the welding position of the short side of the mask body and the short side wall of the masking frame is offset from the long axis. The central part of the good part is humble and printed by MJ " i 合 竹 社 (please read the precautions on the back before filling the page). According to the present invention, it is assumed that the thermal expansion coefficient of the above masking frame is a F. The coefficient of thermal expansion is α Η. The distance from the welding position to the masking body to the welding position to the masking holder in the long and short side walls of each masking frame is LF. When the distance from the welding position of the masking frame to the center axis of the pin is L Η, the following relationship is obtained. This paper scale applies to the China National Standards < CMS) A4 specification (210X297 mm) -8-^ 4 2 3 0 10 * Α7 〇 LF / LH = (0. 75 to 1. 00) aH / aF According to the color cathode ray tube formed as described above, the main body is masked. The welding position of the long side and the long side wall of the masking frame is formed from the short axis. At the same time, the welding position of the short side of the masking body and the short side wall of the masking frame is shifted from the long axis. In this way, if the welding position is shifted from the long axis or the short axis, the sides of the masking frame and the sides of the masking body will have different lengths on both sides of the welding position. As a result, the thermal expansion The amount of deformation produced will also vary. On the other hand, the masking body has a smaller thermal expansion coefficient than the masking frame. Therefore, when the masking frame and the masking holder generate thermal expansion, the masking body rotates diagonally around the welding position with the masking frame. Deformation like a movement "This movement direction is formed to offset the movement direction formed by the action of the masking holder. · The masking body can be substantially maintained at a certain position, and the deviation of the landing of the electron beam is reduced, so that Attempts to improve color purity. The welding positions of the sides of the masking frame and the masking body are corresponding to the thermal expansion coefficients of the masking frame and the masking holder, and the long and short axes of the shadow mask are appropriately opposite to the welding positions of the masking frame and the masking holder. Offset to the welding position of the mask frame and the mask holder. Therefore, it is possible to offset the unique land-landing change that occurs when the shadow mask is supported by the mask holder mounted on the side wall of the mask frame, so that a color cathode ray tube with improved color purity can be obtained. --------- Installation ----- 1T ------ ^ (Please read the il matter on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 regulations (≪ 210X297) -9-423010 A7 B7 V. Description of the invention (7) [Detailed description of the preferred embodiment] Hereinafter, a color cathode ray tube according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the color cathode ray tube is provided with a vacuum wave sealer 10. The vacuum wave sealer 10 is provided with a substantially rectangular panel 22 having an effective portion 20 formed by a curved surface and a skirt portion 2 1 erected on a peripheral portion of the effective portion, and one end portion is configured as: The cylindrical neck 23 is simultaneously connected to the funnel (shaped) tube 2 4 of the skirt. The inner surface of the effective portion 20 of the panel 22 is provided with a fluorescent screen 25 formed by a plurality of fluorescent layers that can emit red, edge, and blue, and a light absorbing layer filled therebetween. In the vacuum wave sealer 10, a shadow mask 26 arranged opposite to the fluorescent screen 25 and arranged at a predetermined interval is arranged. Inside the neck 2 3 of the funnel tube 24 is an electron gun 29 which emits an electron beam 28B, 28G, 28R toward the fluorescent screen 25. On the outer periphery of the funnel tube 24, a deflection fan 30 for deflecting the electron beam is installed. The color cathode ray tube deflects the electron beams 28B, 28G, and 28R emitted from the electron gun 29 by the magnetic field generated by the deflection device (biasing yoke) 30, and uses the shadow mask 2 6 to control the fluorescent screen 2 5Perform horizontal and vertical scanning to display shadow portraits. As shown in Figs. 1 to 4, the shadow mask 26 is provided with a mask body 3 4 having a substantially rectangular shape, and a rectangular mask frame 36 mounted with the mask body. The masking body 34 is provided with an effective surface 3 2 formed by a curved surface provided with a plurality of electron beam through holes and facing the fluorescent screen 25, and a skirt provided on the periphery of the effective surface 32. Department 3 3. The masking box 3 6 has -------- Yuan ------ ΐτ -------- Exercise {Please read the note f on the back before filling in this page) Well in the middle of the Ministry *: r5 ¥->? 炅 J. Consumer cooperation = fi 印 ^! The standard of this paper is fast-moving, and the national standard (CNS) A4 specification (210X297 mm) 42301 0 'A7 A7 _B7 V. Description of the invention g) There are side walls 3 5 welded to the skirt portion 3 3 of the masking body 34, and the cross section is formed in an L shape. The masking body 34 is made of a low thermal expansion material such as steel, and the masking frame 36 is made of iron such as a cold-rolled steel plate. The β masking body 3 4 is provided with a tube axis of a color cathode ray tube. The center C passed by it and the horizontal axis X and the vertical axis Υ which will pass through the center C are orthogonal to each other. The skirt 33 has a pair of long sides 16 a parallel to the horizontal axis X and a pair of short sides 16 b parallel to the vertical axis Υ. The masking frame 36 is formed into a rectangular shape having a pair of long side walls 17a parallel to the horizontal axis X and a pair of short side walls 17b parallel to the vertical axis Y. The shadow mask 26 is supported on the panel 22 by four pins on the side. That is, the panel 2 2 is provided with a horizontal axis X and a vertical axis Y corresponding to the horizontal axis and the vertical axis of the shadow mask 26. The skirt 21 is provided with a pair of long side walls parallel to the horizontal axis and a pair of short side walls parallel to the vertical axis. And in the middle portions of the long side walls and the short side walls, pins are erected. 3 and 8 are located on the horizontal axis X and the vertical axis Y, respectively. In addition, masking holders 39 are welded and fixed to the long side wall 17a and the short side wall 17b of the masking frame 36, and the masking holders are engaged with the corresponding pins 3 8. Is supported by the panel 2 2. Each of the masking holders 39 is formed by a curved elongated rectangular plate, and has a fixed portion 1 8 a welded to the side wall of the masking frame 36, and an engaging portion 1 8 b engaged with the pin 38. An inclined portion 18 c is formed which is inclined to extend between these, and exists along the side wall of the mask frame.

i. ^ 私. i ~~ 'I II. ^-^ (Please read the notes on the back before filling in this page. J This paper size applies to Chinese national standards (CNS > A4 size (210X297 mm) -11-4 2 3 0 10 A1 B7 Printed by the Consumers ’Cooperative of Zhongfu-like quasi-bureau of the Ministry of Economic Affairs 5. Description of the invention d :) In this embodiment | 4 masking holders 3 9 are shown in Fig. 4, and the holders 3 9 are It is arranged so that the center C of the masking body 34 can be located in a rotationally symmetric position. That is, the masking holders 39 and 9 are configured so that each of the holders generated by thermal expansion can act in the same direction of rotation, For example, the masking frame 36 is fixed to be able to rotate in the right direction. As shown in FIG. 3 and FIG. 4, the masking body 34 and the masking frame 36 are welded to the masking frame at each corner of the skirt 33. At the same time as the corresponding corner part, the middle parts of the long side 16 a and short side 16 b of the skirt are individually welded to the long side wall 17 a and short side wall corresponding to the masking frame to form For the connection, the welding position 4 1 a of the long side 16 a and the long side wall 17 a is the same as the position offset from the vertical axis Y. Hours • The welding position 4 1 b of the short side 1 6 b and the short side wall 1 7 b is located at an offset from the horizontal axis X. The welding position 4 1 a, 4 1 b for the horizontal axis X and the vertical axis Y The offset will be different depending on the material of the masking frame 36 and the masking holder 39. That is, when the thermal expansion coefficient of the masking holder 39 is larger than that of the masking frame 36, it is like As shown in FIG. 5A, the welding positions 41a and 41b are arranged opposite to the welding position 43 of the masking holder 39 and the masking frame 36 with respect to the vertical axis Y or the horizontal axis X. Instead, they are arranged. When the thermal expansion coefficient of the masking holder 39 is smaller than the thermal expansion coefficient of the masking frame 36, as shown in FIG. 5B, the welding positions 41a and 41b are set to be offset from the welding with respect to the vertical axis Y or the horizontal axis X. Position 4 3 side. That is, set the welding positions of the mask holder 39 and the mask frame 36 6 -----------------, 1τ ------ Λ, (Please Read the notes on the back first and then fill out this page.) This paper is a common Chinese National Standard (CNS) Α4 scale (210X29? Public address) • 12- 4230 1 〇 Α7 Β7 5. Description of the invention (10) 4 3, and the welding position of the masking frame 3 6 and the masking body 3 4 4 1 a, 4 1 b When the color cathode ray tube can be operated for a long time, the masking holder 3 9 and the masking frame can be connected. The thermal expansion in the length direction from the welding position of 36 to the center of the pin 38 is slightly equal to that between the welding position of the masking frame and the welding position of the shielding body 34, 4 la, 4 lb, and the welding position of 43. The length direction is the amount of thermal expansion in the same direction. In other words, it is assumed that the thermal expansion coefficient of the masking frame 36 is a F and the thermal expansion coefficient of the masking holder 39 is αΗ, from the welding positions 41 a and 41 b of the masking frame 36 and the masking body 34 to the masking frame 36 and the masking holder 3 The distance from the welding position 4 3 to 9 is LF. When the moment from the welding position 4 3 to the central axis of the pin 3 8 is LH, the long and short sides of the main body 3 4 and the masking frame 3 6 are covered. The welding positions 4 1 a and 4 lb will be set at positions that can satisfy the following relationships.

LF / LH = (0.75 ~ 1.00) xaH / aF For example, when the masking frame 3 6 is made of iron material, and the masking holder 3 9 is made of spring material of stainless steel, the following relationship is formed: *

LF = (1.15 ~ 1.45) xLH When the masking frame 3 6 is made of iron material, and the masking holder 3 9 is made of bimetal material, the following relationship is formed -------- --Installation ------ Order ------ Mu (read the precautions on the back first and then the manual page) This paper uses the national standard (CNS) Α4 size (210X297 mm) for this paper size -13- 423010 ^ A7 B7

When the long wall side of the masking frame 3 6 1 7 a 1¾¾ retainer 3 9 is rotationally symmetrical, V. Description of the invention (11)

LF = (90.90 to 1.15) XLH According to the color cathode ray tube constructed as described above, when it is operated for a long time, the masking body 3 4, the masking frame 36, and the masking holder 39 can be reduced. The unique change in the land when the thermal expansion is caused by heating. That is, the land of the rotation component including the installation of 4 retainers 39 to 90% can be reduced, that is, as shown in Fig. 6 and the short wall side 1 7 b. When the masking body 34, the masking frame 36, and the holder 39 are heated, the masking holder 39 takes the pin 3 8 as a fixed point to cause thermal expansion in the length (long axis) direction to make the masking frame Rotate in the direction of arrow mark 4 5. This situation is mainly caused by the following two reasons. The first series is formed by the difference in thermal expansion of the masking holder 39 and the masking frame 36 as shown in FIG. 7A. The amount of movement of the side wall portion of the masking frame 36 in the horizontal or vertical axis direction and the elastic support body are formed. The length changes due to thermal expansion, so that the position of the fixed point will move in the horizontal or vertical axis direction, so that a force component parallel to the direction of each side wall portion of the masking frame 36 will be generated. The second series is shown in Figure 7B The thermal expansion causes the masking frame 3 6 to move in the radial direction, so that each masking holder 39 is pushed toward the skirt 21 side of the panel 22, and as a result, each masking holder is deformed in the direction of extension. Former. As a result, there will be a flat -------- ^ ------ ΐτ ------ outer on each side wall of the masking frame 36 (谙 Read the precautions on the back before filling this page) The standard used in this paper is the ® National Standard (CNS) A4% grid (2IO × 297 mm) 14 · 423010 A7 B7 V. Description of the invention (12) Force components in the direction of the direction ° and these two force components are used The generated rotation component of the masking frame 36 causes the shadow mask 26 to rotate at the center C. Moreover, the dashed lines in Figs. 7A and 7B individually show the state after thermal expansion. As shown in FIG. 6, the masking frame 36 is thermally expanded as a whole. Therefore, the welding positions 41 a and 41 b of each side wall of the masking body 34 and the masking frame 36 are to be individually directed toward the shadow mask 26. The horizontal axis X and vertical axis move away from each other. On the other hand, when viewed from the side of the masking body 34, the movement of the welding positions 41a and 41b of the masking body 34 and the masking frame 36 formed of a low thermal expansion material is smaller than the side of the masking frame 36. Therefore, The masking body 34 is subject to the force of rotation in the direction of the arrow mark 46 due to the thermal expansion difference from the masking frame 36. At this time, the fusion of the masking body 34 and the masking frame 36 at the corners will resist the above forces, but with the absolute words of force, the masking body 34 is rotated in the direction of the arrow mark 46. The force is greater. As a result, the masking body 34 will rotate in the masking frame 36, in a direction opposite to that of the arrow mark 4 5 caused by the thermal expansion of the masking holder 39. Bit. The amount of rotation displacement of the masking body 34 in the masking frame 36, the more the welding positions 41a, 41b move away from the horizontal axis X and vertical axis Y of the shadow mask 26, the more they become larger. Therefore, when the thermal expansion of the masking body 34 is set to be large, the welding positions 41a and 41b of the masking frame 36 and the masking body 34, and the welding positions 43 of the masking frame 36 and the masking holder 39 are as described above. You can eliminate the rotation of the masking body 3 4 -------- ^ ------ 1T ------ 4 (Please read the precautions on the back before filling this page) i?-; J Consumer Cooperation ii Printing «This paper size applies to China National Standard (CNS) A4 (2IOX297 mm) -15- .feii * • 部 t ii: if- > CJ .. = :. T consumer cooperative seal «4 2 3〇1〇« A7 _____ B7 V. Description of the invention (13), so that the shadow mask 26 on the surface of the panel 2 2 will not move. Furthermore, in the above embodiment, It explains that four masking holders 39 are installed in a rotationally symmetric structure for the masking frame 36, but these masking holders can also be installed as shown in FIG. 8. For the horizontal axis X of the shadow mask 26 And the vertical axis Y forms a mirror symmetry. Even with such a structure, the relationship between the welding positions 41a, 41b of the masking frame 36 and the masking body 3 4 and the welding position 4 3 of the masking frame 46 and the masking holder 39 are still set to be the same as those in the previous embodiment. Can satisfy the following relationship

LF / LH = (0.75-1.0) XaH / aF. In addition, other structures are the same as those of the above-mentioned embodiment. Therefore, the same reference numerals will be attached to the same parts, and detailed descriptions will be omitted. When the four masking holders are arranged as described above in a color-symmetrical color cathode-ray tube, when the masking body 34, the masking frame 36, and the holder 39 are individually heated, it is formed as shown in FIG. The device 39 will thermally expand in the length direction with the pin 3 8 as a fixed point, and cause the masking frame 36 and the masking body 34 to be displaced in the diagonal direction indicated by the arrow mark 4 8. Therefore, it is possible to present a land-based change with horizontal and vertical components. However, according to this embodiment, the welding positions 41a, 41b 'of the masking frame and the sides of the masking body 3 4 are set, the masking frame 36 and the masking installation I order null — — ^ (Please read the notes on the back before filling out this page) This paper applies the standard «Ratio (CNS) A4 (2 丨 0X297 mm) • 16- 4230 1 0 ^ A7 B7 Ministry of Economic Affairs Printed by the Central Bureau of Work Consumer Cooperatives 5. Description of the invention A) The welding position 4 3 of the holder 3 9 is formed as described above, the masking body 3 4 will be in the masking frame 3 6 and will be directed toward and by the masking holder The displacement of the diagonal direction formed by the thermal expansion of 3 9 is the arrow mark of the opposite direction. 4 The displacement occurs in the 9 direction. As a result, the diagonal displacement of the masking body 34 can be eliminated, and on the surface, the shadow mask 26 can be prevented from moving with respect to the panel 22. Therefore, even when the four mask holders 39 are mirror-symmetric with respect to the horizontal axis X and vertical axis Y of the shadow mask 26, the land changes with horizontal and vertical components can be reduced, and the color purity can be prevented. deterioration. As described above, under any circumstances where four mask holders 39 are installed to be rotationally symmetrical and four mask holders 39 are installed to be mirror-symmetrical according to the color cathode-ray tube having the above-mentioned structure The inflated electron beam has a special name, and an image excellent in color purity can be obtained. Hereinafter, an example will be specifically described. (Example 1) As shown in FIG. 4, four masking holders 3 9 are fixed to the long side wall 17 and short side wall 17 of the masking frame 36 to form the center C of the masking body 34. The case of rotational symmetry will be described. It will be assumed that the masking body 34 is formed of a steel having a thermal expansion coefficient aM = 0.1 × 1 0_5, and the masking frame 36 is formed of a material having a thermal expansion coefficient cr F == 1. 2 × 1 0-5. The masking holder 3 9 is made of a spring material of stainless steel series with a coefficient of thermal expansion α 1 = 1_7 X 1 0-5, and from the welding position 4 3 of each masking holder 3 9 to the masking frame 3 6 to the pin 3 8 The length (distance LH) up to the center axis is 40 mm. And the sides of the masking frame 3 6 and the masking body 3 4 -------------------------------- Order (Please read the precautions on the back before filling in this page) The size of this paper applies to China National Standard (CNS) A4 specification (2 丨 0 × 297mm). 17- Printed by the Shellfish Consumer Cooperative of the Central Bureau of the Ministry of Economic Affairs 4 2 3 01 0 ^ A7 B7 V. Description of the invention (j5 ) The welding positions 4 1 a and 4 1 b are set to positions offset by 10 mm from the horizontal axis X and vertical axis Y ′ to the opposite side of the welding position 4 3 of the masking holder 39 and the masking frame 3 6. . Generally, the temperature t F of the masking frame 36 when the color cathode ray tube is operated for a long time is 30 to 50 ° C, and the temperature tH of the masking holder 39 is about 75 to 100% of t F. . For this reason, it is assumed that the temperature of the masking frame 36 during the long-term operation of the color cathode ray tube is 40 ° C, and when the temperature of the masking holder 39 is 35 ° C, the thermal expansion amount ΛΗ of the masking holder 39 Will be formed as follows. AH = 40mmx35〇Cxl · 7xl0 " 5 = 2 3. 8 卩 m On the other hand, the thermal expansion from the welding position 4 3 of the masking frame 36 to the masking holder 3 9 to the horizontal axis X or vertical axis Y The amount ΔF will be formed as follows. △ F = 40mmx40t: xl _ 2X10 5 = 1 9. 2 Ren m Therefore, in this case, the positions on the horizontal axis X and vertical axis Y of the masking frame 36 are as shown in FIG. 4 5 direction rotation displacement is shown below. △ η = διγ = 23. 8 / zm— 19. 2itzm = state. This paper size applies the Chinese National Standard (CNS) Λ4 specification (210x297 mm) (read the precautions before reading this page before filling out this page) -5 τ -18- 4230 1 0 m A7 B7 V. Description of the invention (16) However, as in the first embodiment, the welding positions 41 a and 41 b ′ on each side of the masking frame 36 and the masking body 3 4 are kept toward the masking frame 36 and the mask with respect to the horizontal axis X and the vertical axis Y ′ of the shadow mask 26. When the welding position of the welding device 3 9 is opposite to the welding position 4 3 by 10 mm 'and the distance LF from the welding position 43 to the welding position 4 la, 4 lb becomes 50 mm, the horizontal axis or vertical The part of the shaft up to the welding position 4 1 a, 4 1 b of the masking frame 3 6 generates 10 mmx 40 ° Cxl. 2xl0 5 = 4.8; wm thermal expansion. In this case, the masking body 34 formed by the steel material with a thermal expansion coefficient of only 1/10 of the thermal expansion coefficient of the masking frame 36 will follow the welding position 41a of the masking frame 36 and the masking body 34. The movement of 41 and 41b is rotated by 4 · 8 jc / m in the direction opposite to the rotation direction of the masking frame 36, so as to offset the above-mentioned rotation displacement of the masking frame 36. Therefore, the color cathode ray tube can be reduced. When it is operated for a long time, the masking body 3 4, the masking frame 36, and the masking holder 39 are individually heated, and the land change caused by thermal expansion can prevent the deterioration of color purity. The masking body 3 in this situation 4. The relationship between the masking frame 3 6 and the holder 3 9 • When generalized, it becomes as follows.

LFx t FXaF = LHx tHxaH = LHX (0.75 to 1.00) tH x α Η -------- install -------- IT ------ ^ < read the precautions on the back before reading (Fill in this page) The standard of this paper is applicable to the SS standard (CNS) A4 size (210X297 mm) -19- The Ministry of Economic Affairs has decided if 埤 only ^ -Consumer Cooperative Printing Purple 4230 1 〇 ^ Α7 Β7 5 The invention description (17) becomes as follows.

LF / LH = (0.75 ~ 1 · 00) aH / aF and the masking frame 36 is made of iron (aF = 1.2xl0_5 degree), and the masking holder 39 is a spring material of stainless steel series (αΗ = 1. 7x1 0_5 Degree), it can be established from the above formula as follows.

LF = (1.151.45) LH (Embodiment 2) For the four mask holders 39, as shown in FIG. 8, the long side walls and the short side walls of the mask frame 36 are installed to the shadow mask 2 6 A case where the horizontal axis X and the vertical axis Y are mirror-symmetrical will be described. As in Embodiment 1, the masking body 34 is made of steel material, the masking frame 36 is made of iron material, the masking holder 39 is made of stainless steel spring material, and the masking body 39 The distance L Η from the welding position 4 3 of the frame 36 to the center axis of the pin 38 is 40 mm. In this case, the welding positions 4 la and 4 lb of each side of the masking frame 36 and the masking body 3 4 are set to the horizontal axis X and vertical axis Y of the shadow mask 2 6 so as to face the frame holder 3 9 The position opposite to the welding position 4 3 of the masking frame 3 6 is offset by 10 mm. In such a state · It is assumed that the temperature of the masking frame 36 during the long-term operation of the color cathode ray tube is 40 ° C, and the temperature of the holder 39 is -------- supporting ---- -^ ------ έ (Please read the precautions on the back before filling in this card) This paper is the standard of SuZhou National Standard (CNS) A4 (210X297 mm) -20- Central Ministry of Economy In the case of the local shellfish consumer cooperative, the fifth and the invention description 8) At 35 ° C, the thermal expansion amount AH of the holder 39 becomes as follows. △ H = 40mmx35〇Cxl · 7X10-5 = 23. 8 β τη On the other hand, the thermal expansion from the welding position 4 3 of the masking frame 36 to the masking holder 3 9 to the horizontal axis X or vertical axis Υ The quantity △ F becomes as follows, △ F = 40mmx40 ° Cxl · 2x 1 0 — 5 = 1 9. 2, and the position on the horizontal axis and vertical axis of the masking frame 3 6 will be shown as the arrow mark 4 8 The parallel displacement in the diagonal direction has △ H = Z \ F = 23. 8 // m— 19 · 2em = 4.6 vm. In this case, if the welding positions 4 1 a and 4 1 b of the mask frame 36 and the sides of the mask body 3 4 are set, the horizontal axis X and the vertical axis Y are opposite to the welding position 43. When each offset is 10mm, the thermal expansion of the part from the horizontal or vertical axis of the masking frame 36 to the welding positions 41a and 41b will be 10mmx40 ° C xl. 2x10-5 = 4. 8 # m. And the welding positions 4 la and 4 lb of the masking frame 36 and the masking body 34 are shifted in parallel to the arrow marks 49 which are opposite to the arrow marks 48. Therefore, in this state, the masking body composed of the steel material with a small thermal expansion coefficient of about 1/10 for the masking frame 36 will be accompanied by the welding position 4 of the masking frame 36 and the masking body 4 The displacement of 1 a and 41b caused displacement, which can reduce the color cathode. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm). I! &Quot; Order II ^ (for the first reading (Please fill in this page for Jiang Yi matters) -21-Central Standards Bureau, Ministry of Economic Affairs, Consumer Cooperatives, Printing Co., Ltd. ^ 2301 〇 ^ A7 β7 V. Description of the Invention i | 9) Masking body during long-term operation of the tube 3 4 The thermal expansion expansion of the masking frame 36 and the holder 39 prevents land color deterioration. When the relationship between the masking body 34, the masking frame 36, and the holder 39 is generalized, it becomes as follows. LF / LH = (0. 75 ~ 1 · 00) aH / aF and the masking frame 36 is made of iron (aF = l · 2xl0_5 & right), and the masking holder 3 9 is a spring material of stainless steel series (αΗ = 1. 7 X 1 0_5 or so), the above formula can be established as follows

LF 5 4 5) L Η (Embodiment 3) As shown in FIG. 4, the four masking holders 39 are fixed to the center C of the masking body 3 4 to be rotationally symmetric to the long side wall 1 of the masking frame 36. The condition of 7 a and the short side wall 17 b will be described. It will be assumed that the masking body 34 is formed of a steel material having a thermal expansion coefficient aM =. IX 1 0_5, and the masking frame is formed of a steel material having a thermal expansion coefficient aF = 1.2 × 10 ^, and the masking holder 39 is formed. It is formed of a bimetal with a coefficient of thermal expansion αΗ = 1. 3X1 0-5, and it is assumed that the distance from the welding position 4 3 of each masking holder 39 to the masking frame 3 6 to the center axis of the pin 38 is reached. The distance from this paper standard is applicable to China National Standard (CNS) A4 specification (210X297mm) --------- installation-(¾Read the precautions on the back before filling this page) -22- LIN23〇1 Ο Α7 Printed by the Baker Consumer Consumption of the Central Standards Bureau of the Ministry of Economic Affairs. B7 V. Invention Description k) LH is 4 Omm. In addition, the welding positions 4 1 a, 4 1 b on each side of the masking frame 36 and the masking body 3 4 are set to the welding positions of the masking holder 39 and the masking frame 36. The 43 side offset is 2mm. In this state, if the temperature of the masking frame 36 is 40 ° C when the color cathode ray tube is operated for a long time, and the temperature of the masking holder 39 is 35 ° C, the thermal expansion of the masking holder 39 is expanded. The amount ΛΗ becomes as follows. △ H = 4〇mmx35 * Cxl. 3x1. 〇-5 = 18. 2 β m On the other hand, from the welding position 4 3 of the masking frame 36 to the masking holder 3 9 to the horizontal axis X or vertical axis Y The thermal expansion amount ΔΗ in the previous part is as follows. △ F = 40mmx40txl. 2xl0_5 = 19. 2 β m Therefore, in this case, only the positions on the horizontal axis X and vertical axis Y of the masking frame 36 will produce ΔΗ—ΔP = 18 19. 2j «m =-1 0 " m's displacement is only β. In this case, if the welding positions 4 la and 4 lb of each side of the mask frame 36 and the mask body 3 4 are horizontal axis X and vertical axis Y of the shadow mask 26, Welding toward the masking frame 3 6 and the masking holder 3 9 ---------., ¾ clothing -------- ΐΓ ------ ^ {诮 Read the precautions on the back first (Fill in this page again) This paper size is in accordance with Chinese National Standard (CNS) A4 (210x297 mm) -23- ^ 42301 0 A7 B7 V. Description of the invention h) When the position 4 3 side is shifted 2mm ' The portion of the horizontal or vertical axis up to the welding positions 41a, 41b of the masking frame 36 is expanded by 2mmx40 ° Cxl _ 2xl0_5 = 0.96. As a result, the welding positions 4 1 a, 4 1 b of the masking frame 36 and the masking body 34 will rotate in the opposite direction from the direction of rotation of the masking frame by 0 · 9 6 and offset the masking frame 3 Θ. Change position. Therefore, the thermal expansion of the mask body 34, the mask frame 36, and the mask holder 39 caused by the long-time operation of the color cathode-ray tube is reduced, thereby preventing deterioration of color purity. In this case, when the relationship between the masking body 34, the masking frame 36, and the holder 39 is generalized, the following state is obtained as in the first embodiment.

LF / LH = (0. 75 ~ 1. 00) aH / aF and the masking frame 36 is made of iron (aF = 1.2x10-5 degree), and the masking holder 39 is a bimetallic spring material (αΗ = Printed by the Consumer Affairs Cooperative of the Central Government Bureau of the Ministry of Economic Affairs (" Read the notes on the back before filling out this 5) 1.3X10-5 degree). At the time, the following relationship can be established by the above formula.

LF = (0.90 ~ 1.5) LH Furthermore, in the above embodiment, although the number of welding points of the masking frame and the masking holder is not limited, the length of the masking holder is used to form the paper standard.隼 (CNS) A4 size (210X297 male 嫠) -24- 42301. A7 137 V. Description of the invention ί 2) When the multiple points are separated for welding, the middle point of the multiple points is used as the welding position of the mask frame and the mask holder, and when it is set to satisfy the above-mentioned relations, You can get the desired effect. The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the present invention. For example, the number of masking holders is not limited to four, but it can also be made as three as shown in FIG. 10. According to the embodiment shown in FIG. 10, the three masking holders 39 are individually fused and fixed to one of the pair of short side walls 17b and one long side wall 17a. The other structures are the same as those described above. The embodiments are the same. For this reason, the same reference numerals will be attached to the same parts, and detailed descriptions thereof will be omitted. 9 In this embodiment, the fusion position of the masking holder and the masking frame is also connected to the mask body. The positions of the sides of 3 4 and the welding positions 4 1 a and 4 1 b of the masking frame 3 6 are set to be the same as those of the above-mentioned embodiment | that is, set to satisfy LF / LH = (0 · 75 ~ 1. 00) · The relationship of crH / aF can be reduced due to the printing by the Shell and Consumer Cooperative of the China Standards and Quarantine Bureau of the Ministry of Thermal Expansion (Read the precautions on the back before filling out this page} The land shift of the expanded electron beam makes it possible to obtain a color cathode ray tube with improved color purity and white uniformity. [Simplified description of the drawings] Fig. 1 to Fig. 7 B shows a first embodiment of the present invention Fig. 1 is a sectional circle of the above-mentioned color cathode ray tube, and Fig. 2 is an oblique shadow mask. Figure (three-dimensional view), ft scale of this paper is applicable to the standards of countries with difficulties (CNS > A4 now (210x25 > 7mm) -25- long side of vacuum wave sealer ^ 230 1 〇 " A7 B7 V. Description of the invention ( 23) FIG. 3 is a side view showing a part of the above shadow mask, and FIG. 4 is a sectional view showing the assembled state of the panel and the shadow mask of the color cathode ray tube. FIG. 5A is a diagram for explaining the above shadow mask. Figure 5B is the relationship between the welding position of the masking frame, the masking body, and the masking holder. Figure 5B is used for the relationship between the welding position and the welding position when the masking frame and the masking cover are different from Figure 5A. Fig. 6 is a view showing a state of a masking frame, a masking body, and a masking retainer when the masking frame and the masking retainer generate thermal expansion. Fig. 7 A is a diagram showing a state of the masking frame and the masking retainer when thermal expansion occurs in the longitudinal direction. A side view of the state, and FIG. 7B is a plan view showing a state in which the masking holder is pushed by the thermal expansion of the masking frame (pressed state: FIG. 8 is a color cathode ray tube according to the second embodiment of the present invention) Shade A cross-sectional view of the arrangement relationship with the mask holder. Fig. 9 is a cross-sectional view showing the state of the mask frame and the mask body when the mask frame * mask holder generates thermal expansion in the second embodiment. Fig. 10 is a cross-sectional view showing the arrangement relationship between the shadow mask and the mask holder in the color cathode-ray tube according to the third embodiment of the present invention. [Explanation of Symbols] 10 This paper scale applies Chinese national standard ( CNS) A4 specification (210 ×: Z97mm)> one by one _ 26 -------- install --------- 1T ------ ^ {Please read the precautions on the back before filling in this Page) 4230 10, A7 B7 麫 " • Ministry 4! ΛΛΒ- · 1 " Goods Cooperation Office ^ V. Description of the invention (24 1 6 b short side 1 7 a long side wall 1 7 b short side wall 1 8 a fixed part 1 8 b engaging part 1 8 c inclined part 2 0 effective part (panel) 2 1 skirt 2 2 panel 2 3 neck 2 4 funnel (shaped) tube 2 5 fluorescent screen 2 6 shadow cover 28B, 28G, 28R electron beam 2 9 electron gun 3 0 deflection (deflection) yoke (3 2 effective surface (shade ) 3 3 Skirt (shade mask) 3 4 Masking body 3 5 Side wall masking frame 3 6 Masking frame 3 8 Pin 3 9 Masking holder 4 1 a, 4 1 b Welding position -------- install -------- Order ----- I Mu (Please read the precautions on the back before filling in this page) This paper size is applicable to Chinese garden standards (CNS) Α4 grid (210X297 mm) -27 -4230 1 0 ^ A7 B7 V. Description of the invention (25) 43 Welding position 45, 46, 48, 49 Arrow mark (诮 Please read the precautions on the back before filling this page) Wipe the paper and use it for half of the solid state (CNS) A4 specifications (2 丨 0X297 mm) -28-

Claims (1)

Printed by the Consumer Cooperatives of the Central Government Bureau of the Ministry of Economic Affairs Λ8 B8 C8 D8 VI. Patent application scope 1. A color cathode ray tube with: a long axis and a short axis that have orthogonal (vertical intersection) through the tube axis At the same time, a substantially rectangular effective portion of the fluorescent screen on the inner surface is provided, and a substantially rectangular skirt portion is provided along the side edge of the effective portion, and the skirt portion has an individual orientation and the long axis and The short axis is a panel with 4 side walls extending in parallel; a plurality of stud pins that are fixed to the skirt and are respectively located on the long axis and the short axis; have a strategy facing the fluorescent screen A rectangular masking body and a shadow mask with a substantially rectangular masking frame fixed to the periphery of the masking body, and the masking body has a long axis and a short axis corresponding to the long axis and the short axis of the panel, and parallel On one pair of long sides of the long axis and one pair of short sides parallel to the short axis, the masking frame is individually welded (welded) to the long side of the masking body and is slightly parallel to a pair of lengths of the opposite bamboo. Side walls, and Welded to the short side of the masking body and slightly parallel to a pair of opposite short side walls; and at least 3 side walls arranged to the masking frame to support the masking plurality of masking holders for the panel Each masking holder is provided with a fixed portion welded to the masking frame and an engagement engaged with the corresponding pin, and extends toward the length of the side wall of the masking frame. * The masking body is long. The welding position of the side and the long side wall of the masking frame is offset from the short axis, and the welding position of the short side of the masking body and the short side wall of the masking frame is offset from the long axis. 2. The color cathode ray tube described in item 1 of the scope of patent application, -------- ^ ------ ix ------ ^ (Please read the precautions on the back before filling (This page) This paper is applicable to the National Standards for Distressed Countries (CNS) A4 specifications (210X297 mm) -29-42301 0 A8 B8 C8 D8 Printed by the Central Government Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives. 6. The scope of patent application is set. The welding position of the masking holder and the masking frame, and the welding position of the masking frame and the masking body, make the masking frame along the length from the welding position of each masking holder and the masking frame to the center of the pin. The thermal expansion amount and the thermal expansion amount in the same direction as the length direction from the welding position between the upper mask holder and the mask frame to the welding position between the mask frame and the mask body can be slightly equal. 3. The color cathode ray tube described in item 1 of the scope of the patent application, wherein the thermal expansion coefficient of the above masking frame is ct F, and the thermal expansion coefficient of each masking holder is α Η, on the long side wall of each masking frame In the short side wall, the distance from the welding position with the masking body to the welding position with the masking holder is LF, and the distance from the center axis of the welding position with the masking frame to the direct axis of the masking frame is At the time of L, it has the following relations: \\ LF / LH = (0 · 75 ~ 4. 4. The color cathode-ray tube as described in item 3 of the patent application scope, wherein the above-mentioned masking frame is formed of iron material Each cover is made of stainless steel spring material and has the following relationship -------- Equipment-(Please read the precautions on the back before filling in this page) Order '丨 · ^ FL Η LX Pipeline Shooting Very Shade-The description of color 3 For example, the paper ’s baht scale is free to use China ’s national rubbing rate (CNS) A4 specification (210X297 mm) -30 4230 t 0, A8 B8 C8 D8 Printed by the Men ’s Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs The frame is formed of iron material, and each of the above-mentioned masking holders is formed of bimetal material, and has the following closing _mouth 1 a LF = (0.90 ~ 1.15) xLH fiber 6. As described in the first scope of the patent application A color cathode ray tube, in which each of the masking holders has a larger thermal expansion coefficient than the masking frame, and the welding position of the long side of the masking body and the long side wall of the masking frame is directed to the short axis toward the masking holder. While the welding position of the masking frame is offset from the opposite side, the welding position of the short side of the masking body and the short side wall of the masking frame is opposite to the welding position of the masking holder and the masking frame. Offset "" 7. The color cathode ray tube described in item 1 of the scope of the patent application, wherein each of the masking holders has a smaller thermal expansion coefficient than the masking frame, and the long side of the masking body and the long side wall of the masking frame are welded. The position is that the short axis is shifted toward the welding position of the masking holder and the masking frame, and the welding position of the short side of the masking body and the short side wall of the masking frame is toward the masking holder. It is offset from the welding position of the mask frame. 8. The color cathode ray tube described in item 1 of the scope of patent application *, wherein the plurality of masking holders are individually arranged on one pair of long side walls and one pair of short side walls of the masking frame, and are configured to The tube axis is rotationally symmetric at the center. 9. The color cathode ray tube as described in item 1 of the scope of patent application, which -------- install -------- order ------ line (线 read the precautions on the back before filling (This page) This paper uses the Chinese National Standard (CNS) A4 (210X297 mm). 31-BS cs D8 423010. 6. The above-mentioned plural mask holders in the scope of the patent application and are individually arranged in the above mask frame. One pair of long side walls and one pair of short side walls, one pair of masking retainers arranged on the short side walls is configured symmetrically to the short axis, and one pair of masking retainers on the long side walls The device is configured as a pair of the long axis, and the welding of the short side wall of the masking body and the masking frame is formed by offsetting elk from the long axis to make the welding position from WIT v;: isi long or short If the axis is offset, the length will be different on each side of the _ frame and the masking body. \:-Thin sides. Both sides of the welding position will have different lengths. As a result, the amount of deformation caused by thermal expansion will also differ. On the other hand, the masking body is smaller than the masking frame When the masking frame and the frame holder produce thermal expansion 1¾, the masking body is rotated around the welding position of the masking frame and moved in a diagonal direction. The moving direction is changed to be offset by the frame holder.丨 Hao: The direction of movement of the shape of the movement can substantially maintain the masking body at the… position, reducing the deviation of the landing of the electron beam, so that it can attempt to improve the color purity. _ The masking frame and the masking body The welding position of each side corresponds to the thermal expansion coefficient of the mask i and the frame holder. For the long axis of the shadow mask: '..' 5 and the short axis, it is opposite to the welding position of the mask frame and the frame holder. Or offset towards the welding position of the masking frame and the frame holder. This can offset the unique land-landing changes supported by the frame holder installed on the side wall of the masking frame so that colors with improved color purity can be obtained. Cathode ray tube. This paper size is applicable to China National Standard (CNS) A4 (2 丨 0X297mm) ---------------, 1T ------ ▲ {Please read the back (Please note this page before filling out this page) Yin Chang f_s, which will be presented by Qin Shi at the Central Laboratories of the Ministry of Economic Affairs, Consumer Cooperatives