CN1165391A - Cathode-ray tube color selecting mechanism and its assembly method - Google Patents

Cathode-ray tube color selecting mechanism and its assembly method Download PDF

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Publication number
CN1165391A
CN1165391A CN 96121387 CN96121387A CN1165391A CN 1165391 A CN1165391 A CN 1165391A CN 96121387 CN96121387 CN 96121387 CN 96121387 A CN96121387 A CN 96121387A CN 1165391 A CN1165391 A CN 1165391A
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China
Prior art keywords
lattice structure
framework
spacing
parts
thickness
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Granted
Application number
CN 96121387
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Chinese (zh)
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CN1073269C (en
Inventor
长谷川幸志
山本智彦
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Sony Corp
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Sony Corp
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Publication of CN1165391A publication Critical patent/CN1165391A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • H01J2229/0727—Aperture plate
    • H01J2229/075—Beam passing apertures, e.g. geometrical arrangements
    • H01J2229/0755—Beam passing apertures, e.g. geometrical arrangements characterised by aperture shape
    • H01J2229/0761—Uniaxial masks having parallel slit apertures, i.e. Trinitron type
    • 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
    • H01J2229/0727—Aperture plate
    • H01J2229/0766—Details of skirt or border
    • H01J2229/0772—Apertures, cut-outs, depressions, or the like

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  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

Disclosed is a method for assembling a color matching device of a cathode ray tube. The method includes the following steps: a grid structure 1 composed of rectangular sheet metals is prepared, with a plurality of slits 3 extending along the direction perpendicular to a pair of paralleled sides of the sheet metals; a frame 7 with a pair of paralleled parts is pressed to make the two parts 9 close to each other; the pair of paralleled sides of the grid structure 1 are respectively welded on the pair of parts 9; the pressure added on the frame 7 is removed and the grid structure 1 is installed on the frame 7 in a stretching state. The method is characterized in that the spaces between each solder joint of the grid structure 1 and each part 9 are set to be 20-35 times of the thickness of the grid structure, and 8-14 times of the space P of the slit 3.

Description

Cathode-ray tube color selecting mechanism and assemble method thereof
The present invention relates to the assemble method of color cathode ray tube color selecting apparatus, and with the color selecting apparatus of this method assembling.
The color selecting apparatus of known color cathode ray tube is by the lattice structure that has the sheet metal of many slits (beam hole) and form is installed on metal framework.Trinitron (trade (brand) name) formula cathode ray tube adopts has the lattice structure in the linear pattern hole that is called the hole grid.
Fig. 3 is the perspective view of color selecting apparatus, and Fig. 4 is the enlarged drawing of the essential part of hole grid.The hole grid 1 that rectangular metal plate constitutes have a large amount of slits 3 in effective screen zone, with so that electron beam passes through, and have herring bone part 5 between each slit 3.Hole grid 1 by welded and installed on rectangular metal frame 7.Framework 7 comprises the A parts 9 of pair of parallel, and this parts bending and 1 weldering of hole grid also have a plurality of B parts 11 thereon, and each end with each A parts 9 interconnects respectively.
According to the following steps hole grid 1 are installed on the framework 7, on the close mutually direction of A parts 9, push framework 7,, relative each side of hole grid 1 is welded on the A parts 9 with the welded spot pitch that is fit to by line welding or laser welding.
Then, discharge the pressure be added in framework 7, the state that under high tension, stretches with hole grid 1 and being installed on the framework 7.Come the reason of installing hole grid 1 to be by extended state, reduced the miscontacting of screen of electron beam on phosphor screen of the slit that passes hole grid 1 that the thermal expansion of hole grid 1 when working because of cathode ray tube produces.By finishing the unnecessary marginal portion of the hole grid of giving prominence to from framework 71 is removed, thereby finished the installation of hole grid 1 on framework 7.
In recent years, require the slit separation of color selecting apparatus thinner, hole grid 1 are thinner, and have the trend of high accuracy and lighting.This makes and is difficult to as follows hole grid 1 are installed on the framework 7, thereby also makes 5 maintenances of herring bone part and the suitable state of the curved surface coupling of A parts 9 be avoided occurring fold.For example, be the hole grid 1 of 0.1mm for thickness, when release is added in pressure on the framework 7,, then can not produce fold if slit separation is set at 0.5mm; But if slit separation is set to 0.25mm, the frequency that then produces fold increases.The frequency that produces fold also depends on the thickness of hole grid 1, and more particularly, along with the 1 thickness attenuation of hole grid, the frequency that produces fold increases.
Spacing between the solder joint suitably is set, so that prevent the generation of fold, by line welding or laser welding, these solder joints relative each face down bonding of hole grid 1 on the A of pair of parallel parts 9, in hole grid 1, when each spacing between the solder joint is wide, produce reaction force owing to removing the pressure that is added in framework 7, cause stress to concentrate on each solder joint, make each herring bone part 5 be easy to be distorted and be out of shape.On the other hand, when the spacing between each solder joint was narrow, each herring bone part 5 can not absorb the stress difference between adjacent welds, thereby was easy to be twisted and be out of shape.
Therefore, the assemble method of relevant color selecting apparatus has suppressed the generation of fold to a certain extent, thereby has avoided the appearance of fold by setting the spacing of each solder joint in the prior art; But it can not reduce the generation of fold fully, and the improvement of quality is still had obstruction.The shortcoming of this relevant known method is inconvenient, that is under specific specification requirement during manufacturing hole grid 1, if condition changes (thickness and/or slit separation), then must each suitable spacing of determining between each solder joint.
The assemble method that the purpose of this invention is to provide a kind of cathode-ray tube color selecting mechanism, can set the optimal spacing between each solder joint, prevent the generation of twisting and being out of shape, thereby stablize the quality of color selecting apparatus, even condition (thickness and slit separation) changes, also can easily set the spacing between each solder joint.
Another purpose of the present invention provides the color selecting apparatus with the said method assembling.
For realizing first purpose, according to first technical scheme of the present invention, a kind of assemble method of cathode-ray tube color selecting mechanism is provided, may further comprise the steps: preparation has upwardly extending many slits in the side vertical with sheet metal pair of parallel side by the lattice structure that rectangular metal sheet constitutes; On the direction identical, the framework with a pair of parts that are parallel to each other is pushed, so that two parts are close mutually with the parallel dual-side of sheet metal; The pair of parallel side of lattice structure is welded on respectively on a pair of parts; Releasing is added in the pressure of framework, with extended state lattice structure is installed on the framework, it is characterized in that the spacing between each solder joint of lattice structure and each parts welding, in the 20-35 that is set at the lattice structure thickness scope doubly and in the 8-14 scope doubly of slit separation.
In order to realize second purpose, according to second technical scheme of the present invention, a kind of color selecting apparatus of cathode ray tube is provided, comprises:, have upwardly extending many slits in the side vertical with sheet metal pair of parallel side by the lattice structure that rectangular metal sheet constitutes; On the direction identical, has the framework of a pair of parts that are parallel to each other with the parallel dual-side of sheet metal; It is characterized in that making each parts close mutually by pushing framework, the pair of parallel side of lattice structure is welded on respectively on a pair of parts, releasing is added in the pressure of framework, with extended state lattice structure is installed on the framework, thereby lattice structure is installed on the framework; Spacing between each solder joint of lattice structure and each parts welding, the 20-35 that is set at lattice structure thickness is doubly and in the 8-14 of slit separation times the scope.
The 24-29 that each above-mentioned spacing can be set in lattice structure thickness between solder joint is doubly and in the 8-14 of slit separation times the scope; Perhaps at the 20-35 of lattice structure thickness doubly and in the 10-12 of the slit separation scope doubly, the 24-29 that each above-mentioned spacing is set in lattice structure thickness between solder joint doubly and the 10-12 of slit separation scope doubly better interior.
In the assemble method and color selecting apparatus of cathode-ray tube color selecting mechanism of the present invention with this method assembling, each spacing between each solder joint is arranged in the above-mentioned particular range, thereby can guarantee to eliminate the distortion around the solder joint and the degree of freedom of distortion, prevent that the stress that adds to each solder joint from producing distortion and distortion around solder joint, thereby can reduce the frequency of lattice structure generation fold significantly.As a result,, also can stablize the quality of color selecting apparatus, be easy to set the spacing between solder joint even condition (thickness and/or spacing) changes.
By the explanation of doing below in conjunction with accompanying drawing, can understand further feature of the present invention and advantage.
Fig. 1 is according to assemble method of the present invention, the hole grid is welded in the schematic diagram of the spacing between the solder joint of framework.
Fig. 2 is the flow chart of the assemble method of cathode-ray tube color selecting mechanism.
Fig. 3 is the perspective view of color selecting apparatus.
Fig. 4 is the enlarged drawing of grid base this part, hole.
Below, with the preferred embodiment of the assemble method of accompanying drawings cathode-ray tube color selecting mechanism of the present invention.
Fig. 1 is according to assemble method of the present invention, the hole grid is welded in the schematic diagram of the spacing between the solder joint of framework, and Fig. 2 is the flow chart of the assemble method of cathode-ray tube color selecting mechanism.In addition, Fig. 3 with shown in 4 with these corresponding parts by identical mark representative, omit explanation to its repetition.
Shown in Fig. 2 and 3, by following steps assembling color selecting apparatus, cleaning framework 7, mounting spring support 21 (see figure 3)s are in framework 7, push framework 7, by this way, that the A parts 9 that are welded with hole grid 1 are close mutually, by line welding or laser welding, be welded in A parts 9 respectively at the relative dual-side of following hole grid 1 of this state.
Then, remove the pressure that is added on the framework 7, the extended state under high tension is installed on the framework 7 hole grid 1., hole grid 1 and framework 7 are done melanism handle removing by finishing, subsequently mounting spring 23 etc. from outstanding hole grid 1 parts of framework 7.
In assemble method of the present invention, by the specific distance between each solder joint " W " (see figure 1) hole grid 1 are welded on the A parts 9, the thickness of hole grid 1) and 8P-14P (P: in the scope spacing of slit 3) more particularly, the spacing between each solder joint " W " is set in 20t-35t (t:.This scope of the spacing between each solder joint " W " is based on following consideration and is definite, releasing is added in after the pressure on the framework 1 and the distortion and the distortion of the hole grid 1 that produce, depend on the spacing between each solder joint, and the spacing " P " of the thickness of slab t and the slit of hole grid 1 is depended in the variation of the spacing between each solder joint.
The result of the test that table 1 is showed is 17 inches hole grid 1 (condition: decide as following) to be welded in framework 7 respectively with different spot pitch detect the fold occurrence frequency.
Condition:
Hole grid thickness: 0.1mm
Slit separation: 0.25mm
The check of fold: range estimation
By result shown in the table 1 as seen, when spot pitch was in outside the scope of 2.0mm-3.5mm, the fold occurrence frequency was obviously higher.This shows that these values have determined the border that the fold occurrence frequency obviously increases, thereby, with regard to the fold occurrence frequency, the scope between these values, that is have critical characteristic from 2.0mm-3.5mm.
Table 1
Spot pitch (center to center between the solder joint: mm) Fold occurrence frequency (fold frequency/measurement number of times)
????1.8 ????11/20
????1.9 ????9/20
????2.0 ????1/20
????2.2 ????0/20
????2.4 ????0/20
????2.6 ????0/20
????2.8 ????0/20
????3.0 ????0/20
????3.2 ????1/20
????3.4 ????1/20
????3.5 ????1/20
????3.6 ????8/20
The reason that above-mentioned scope has critical characteristic is as follows: that is, when spot pitch during less than 2.0mm, the degree of freedom of eliminating distortion around the solder joint and distortion less (in other words, the distance that absorbs stress shortens); When spot pitch during greater than 3.5mm, it is big to be added in should just becoming of each solder joint 25, and herring bone part 5 is easy to produce distortion and distortion around solder joint.
With regard to hole grid 1, when removing the pressure that is added on the framework 7, if seam does not then produce fold apart from being set at 0.5mm; If seam is apart from being taken as 0.25mm, the frequency that then produces fold is higher.So, the occurrence frequency of fold with seam apart from diminishing and increasing.And the occurrence frequency of fold increases with the 1 thickness attenuation of hole grid.
The 20-35 that the relation of the scope of spot pitch " W " and these values (seam is apart from " P ", thickness " t ") can be transformed into thickness " t " doubly reaches 8-14 doubly the scope of seam apart from " P ".That is, the 20-35 that spot pitch " W " is located at thickness " t " doubly and seam apart from the 8-14 of " P " doubly, can obtain fold the effect that obviously reduces, the peak effect that promptly usually said fold takes place take place.
The result of the test that table 2 is showed, be to hole grid (condition: decide) as following with each spot pitch " W " in the scope of 2.0-3.5mm and be welded in framework respectively and detect the fold occurrence frequency, wherein measure number of times greater than previous test.
Condition:
Hole grid thickness: 0.1mm
Slit separation: 0.25mm
The detection of fold: range estimation
Table 2
Spot pitch (center to center between the solder joint: mm) Fold occurrence frequency (fold frequency/measurement number of times)
????2.1 ????1/100
????2.2 ????1/100
????2.3 ????1/100
????2.4 ????0/100
????2.8 ????0/100
????2.9 ????0/100
????3.0 ????1/100
????3.1 ????1/100
By table 2 result as seen, fold does not take place in spot pitch when 2.4-2.9mm.This shows in the scope of these values, that is 2.4mm-2.9mm has critical characteristic.As mentioned above, the fold that hole grid 1 take place depends on that seam is apart from " P " and thickness " t ", thereby is the relation transformation of above-mentioned scope and these values the scope of 24-29 times of thickness " t " and 9.6-11.6 times (numerical value less than 1.0 rounds up, and becomes 10-12 times) of stitching distance " P ".That is, by 24-29 times and the 10-12 scope doubly of seam distance " P " that spot pitch " W " is fixed on thickness " t ", can obtain to eliminate the positive effect of fold generation.
Assemble method according to above-mentioned cathode-ray tube color selecting mechanism, when utilizing line welding or Laser Welding that the relative dual-side of hole grid 1 is welded in A parts 9, simultaneously push framework 7 by this way so that A parts 9 mutually near the time, the 20-35 that spot pitch " W " is made as thickness " t " doubly and seam apart from the 8-14 of " P " doubly so that can obviously reduce and remove the frequency that fold takes place for hole grid 1 after the pressure that is added on the framework 7.In addition, the 24-29 by spot pitch being decided to be thickness " t " doubly and seam apart from the 10-12 of " P " doubly, can prevent to remove the pressure that is added on the framework 7 effectively after hole grid 1 fold takes place.
Therefore, assemble method according to above-mentioned cathode-ray tube color selecting mechanism, because can be spot pitch " W " by setting apart from the relation of " P " with thickness " t " and seam, so under particular technology requires during manufacturing hole grid 1,, needn't all come to determine spot pitch " W " at every turn if condition (thickness and/or seam apart from) changes, that is, spot pitch " W " optimum value be can easily set,, distortion and distortion also can be prevented even condition changes (thickness and/or seam distance).
Though most preferred embodiment of the present invention is illustrated, this explanation only is used for schematic purpose, obviously under the condition of the marrow of the claims that do not break away from the application or scope, can make various variations and remodeling.

Claims (8)

  1. The assemble method of 1 one kinds of cathode-ray tube color selecting mechanisms may further comprise the steps:
    Preparation is had at side upwardly extending many slits 3 vertical with described sheet metal pair of parallel side by the lattice structure 1 that rectangular metal sheet constitutes;
    On the direction identical, the framework 7 with a pair of parts 9 that are parallel to each other is pushed, so that described parts 9 are close mutually with the parallel dual-side of described sheet metal;
    The a pair of described parallel sides of described lattice structure 1 is welded in respectively on a pair of described parts 9;
    Releasing is added in the pressure on the described framework 7, with extended state described lattice structure 1 is installed on the described framework 7;
    It is characterized in that the spacing " W " between each solder joint of described lattice structure 1 and described each parts 9 welding is set to 20-35 times and 8-14 times of described slit separation " P " at the thickness " t " of described lattice structure 1.
  2. 2 assemble methods according to the cathode-ray tube color selecting mechanism of claim 1 is characterized in that 24-29 that the spacing " W " between described each solder joint is set at described lattice structure 1 thickness " t " doubly and the 8-14 of the spacing " P " of described slit 3 scope doubly.
  3. 3 assemble methods according to the cathode-ray tube color selecting mechanism of claim 1 is characterized in that 20-35 that spacing " W " between described each solder joint is set in described lattice structure 1 thickness " t " is doubly and in the 10-12 of the spacing " P " of described slit 3 scope doubly.
  4. 4 assemble methods according to the cathode-ray tube color selecting mechanism of claim 1 is characterized in that 24-29 that spacing " W " between described each solder joint is set in described lattice structure 1 thickness " t " doubly and the 10-12 of the spacing " P " of described slit 3 scope doubly.
  5. The color selecting apparatus of 5 one kinds of cathode ray tubes comprises:
    By the lattice structure 1 that rectangular metal sheet constitutes, have at upwardly extending many slits 3 in side vertical with described sheet metal pair of parallel side;
    On the direction identical, has the framework 7 of a pair of parts 9 that are parallel to each other with the described parallel dual-side of described sheet metal;
    It is characterized in that, by pushing described framework 7, make described each parts 9 close mutually, the a pair of described parallel sides of described lattice structure 1 is welded on respectively on a pair of described parts 9, releasing is added in the pressure on the described framework 7, with extended state described lattice structure 1 is installed on the described framework 7, thereby described lattice structure 1 is installed on the described framework 7;
    Spacing " W " between each solder joint of described lattice structure 1 and 9 welding of described each parts, the 20-35 that is set in described lattice structure 1 thickness " t " is doubly and in the 8-14 of described slit 3 spacings " P " scope doubly.
  6. 6 cathode-ray tube color selecting mechanisms according to claim 5 is characterized in that the described spacing of each solder joint " W " is set at 24-29 times and 8-14 times of described slit 3 spacings " P " of described lattice structure 1 thickness " t ".
  7. 7 cathode-ray tube color selecting mechanisms according to claim 5 is characterized in that described each spot pitch " W " is set at 20-35 times and 10-12 times of described slit 3 spacings " P " of described lattice structure 1 thickness " t ".
  8. 8 cathode-ray tube color selecting mechanisms according to claim 5 is characterized in that described each spot pitch " W " is set at 24-29 times and 10-12 times of described slit 3 spacings " P " of described lattice structure 1 thickness " t ".
CN96121387A 1995-12-12 1996-12-12 Cathode-ray tube color selecting mechanism and its assembly method Expired - Fee Related CN1073269C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP322961/95 1995-12-12
JP322961/1995 1995-12-12
JP32296195A JPH09161672A (en) 1995-12-12 1995-12-12 Method for assembling color selecting mechanism for cathode-ray tube

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CN1165391A true CN1165391A (en) 1997-11-19
CN1073269C CN1073269C (en) 2001-10-17

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CN (1) CN1073269C (en)
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6225736B1 (en) 1999-04-01 2001-05-01 Thomson Licensing S.A. Color picture tube having a low expansion tension mask attached to a higher expansion frame
US6274975B1 (en) 1999-04-01 2001-08-14 Thomson Licensing S.A. Color picture tube having a tension mask attached to a frame
US6455992B1 (en) 1999-04-12 2002-09-24 Thomson Licensing S.A. Color picture tube having a low expansion tension mask attached to a higher expansion frame
KR100335090B1 (en) * 2000-05-30 2002-05-04 구자홍 Shadow mask in color braun tube
KR100335091B1 (en) * 2000-05-30 2002-05-04 구자홍 Shadow mask in color braun tube
US6781297B2 (en) * 2001-04-07 2004-08-24 Thomson Licensing S. A. Method and apparatus for maintaining mask strand spatial uniformity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115799C2 (en) * 1981-04-18 1985-05-30 Standard Elektrik Lorenz Ag, 7000 Stuttgart Color selection electrode for color television tubes and process for their manufacture
US4828523A (en) * 1987-06-04 1989-05-09 Zenith Electronics Corporation Tension mask securement means and process therefore
KR940010981B1 (en) * 1992-05-20 1994-11-21 삼성전관 주식회사 Color cathode-ray tube

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JPH09161672A (en) 1997-06-20
GB9625508D0 (en) 1997-01-29
CN1073269C (en) 2001-10-17
GB2308223A (en) 1997-06-18
GB2308223B (en) 2000-04-12

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