EP0858094B1 - Tube image couleur avec un ensemble masque-cadre - Google Patents

Tube image couleur avec un ensemble masque-cadre Download PDF

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Publication number
EP0858094B1
EP0858094B1 EP97101498A EP97101498A EP0858094B1 EP 0858094 B1 EP0858094 B1 EP 0858094B1 EP 97101498 A EP97101498 A EP 97101498A EP 97101498 A EP97101498 A EP 97101498A EP 0858094 B1 EP0858094 B1 EP 0858094B1
Authority
EP
European Patent Office
Prior art keywords
mask
notches
frame
picture tube
color picture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97101498A
Other languages
German (de)
English (en)
Other versions
EP0858094A1 (fr
Inventor
Heiko Fichtler
Stefan Fischer
Rolf Reidinger
Werner Wolffram
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSI Esslingen GmbH
Original Assignee
Matsushita Electronics Europe GmbH
Matsushita Display Devices Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electronics Europe GmbH, Matsushita Display Devices Germany GmbH filed Critical Matsushita Electronics Europe GmbH
Priority to EP97101498A priority Critical patent/EP0858094B1/fr
Priority to DE59707047T priority patent/DE59707047D1/de
Priority to US09/015,969 priority patent/US6043597A/en
Publication of EP0858094A1 publication Critical patent/EP0858094A1/fr
Application granted granted Critical
Publication of EP0858094B1 publication Critical patent/EP0858094B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J2229/0727—Aperture plate
    • H01J2229/0766—Details of skirt or border

Definitions

  • the invention relates to a color picture tube with a mask-frame combination according to the preamble of the claim 1.
  • the shadow mask or mask consists of thin, low carbon iron sheet or iron alloys. nowadays the masks are often made of iron-nickel alloys manufactured at low temperatures compared to iron have very little thermal expansion caused by Magnetostriction. There are about 400,000 holes in the mask etched, the approximately 600 triple stripes or the approximately 400,000 color point triples arranged in groups of three Fluorescent strips or fluorescent dots, each with a red, green and blue luminous stripes or dots are.
  • the curved shadow mask is in or welded onto the mask frame. This is with modern Color picture tubes also made of thin sheet metal.
  • the shadow mask with Frame and suspension must be at least so stable that the Picture tube a maximum permitted acceleration of 35g he wears. Because iron-nickel alloys are many times more expensive than iron, the mask frame (or frame) is made Iron is made, while the mask is made of an iron-nickel alloy consists.
  • EP-A1 063 322 refers to iron mask with iron frame
  • the mask is welded outside the frame. It can be on one previously necessary manufacturing step (temperature treatment (Stabilization) in a continuous furnace).
  • temperature treatment Stabilization
  • These weld spots must within a certain height range of the mask edge which, like the other range information from the Length of the mask diagonal is dependent.
  • For decoupling There are also notches, recesses or sags provided which is located at the corners of the mask Welds on both sides of mechanical stresses relieve. One above the same serves the same purpose Edge of mask attached all around bead.
  • a total of 12 are used to connect the frame and mask Spot welds used to make the mask shirt on the outside weld the frame.
  • the welding spots are there each at the corners and roughly in the middle of each side.
  • the weld spots placed as close as possible to the free edge of the mask shirt and the cutouts each take up almost the entire area between the welding points.
  • the object of the invention is for mask-frame combinations with masks made of iron-nickel alloys and frames made of iron, where the mask shirt is on the inside of the frame permanent deformation of the mask is caused by welding Avoid weakening the stiffness in order to avoid To be able to elastically compensate for differences in length, while maintaining stability to mechanical To be able to withstand stress.
  • the stability of the connection between mask and frame can be achieved with a minimum number of welding spots can be achieved, if the weld spots in addition to the corners and each one in the middle of the shorter side near the Be attached in the middle of the longer sides.
  • a mask-frame combination in the figures shown, which consists of a mask frame 1 and a mask 2nd consists.
  • the mask that has holes or mask slits 3 is provided to only some of the electrons for the Fluorescent strips or fluorescent dots of the primary colors to let through on the inside of the front screen glass preferably made of an iron-nickel alloy with 36% nickel (FeNi36, Invar) with a small coefficient of thermal expansion manufactured.
  • the coefficient of expansion of this Iron-nickel alloy is up to about 60 ° C less than one tenths below that of iron. Depending on the exact Alloy composition of this iron-nickel alloy lies the Curie point is usually between 200 and 300 ° C.
  • the mask-frame combination is attached to the side Thermal bimetal springs attached to the picture tube pan ( "Buttoned").
  • One of the springs is also with one Centering disc provided.
  • the thin slit or shadow mask is easy to handle Welded mask frame.
  • the masks can be used both over the Frame put up and welded outside (in this Embodiment inside).
  • the weld spots between the mask and frame then connect the mask shirt and the inner surface of the frame.
  • the total of ten welding spots SP1 to SP10 sit at the with an arrowhead in Fig. 1st marked positions. Accordingly, there are four Spot welds (SP2, SP4, SP7, SP9) in the corners of the Combination arranged.
  • Two more welding spots SP5, SP6 and SP10, SP1 sit on each of the long sides and are arranged near the middle.
  • the mask shirt 7 (in Fig. 2 is the height compared to Width exaggerated) is around the middle Spot welds on the shorter sides with notches and Provide decoupling slots so that the Mask shirt areas around the weld spots relatively free can move.
  • Notches 10 and decoupling slots 11 are provided and on the side of the notches facing away from the weld 10 additional decoupling slots at some distance appropriate.
  • Both the notches 10 and the Decoupling slots 11 preferably have one arched shape. Likewise, all forms be used, which increases with depth, i.e. increasing distance from the outer edge of the mask, in their Taper width.
  • the depth (H2-H3) of the notches 10 Particularly important for a particularly good fulfillment the stability and elasticity requirement is the depth (H2-H3) of the notches 10. It has been found that a relationship between the height of the mask shirt H2 and the remaining height H3 of the mask shirt at the location of the maximum depth of the notches 10 of 3: 1 the conflicting requirements particularly well met.
  • width ratios of the notches 10 also adhere to certain size ratios.

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Claims (7)

  1. Tube image couleur avec un ensemble masque-cadre, constitué d'un cadre (1) rectangulaire en un premier matériau et d'un masque (2) en un deuxième matériau, le masque étant relié au cadre par une pluralité de points de soudure, caractérisé en ce que
    les côtés courts présentent chacun un point de soudure (SP3, SP8), de préférence à peu près au milieu des côtés courts ; et
    des deux côtés des points de soudure (SP3, SP8) des côtés courts sont prévues encoches (10), le rapport H3/H2 entre la hauteur H3 résiduelle de la chemise de masque (7), à l'emplacement de la profondeur maximale des encoches, et la hauteur H2 de la chemise de masque (7) étant à peu près de : H3/H2 = 1/3.
  2. Tube image couleur selon la revendication 1, caractérisé en ce que les encoches (10) ont une largeur A qui, par rapport à la largeur de nervure B résiduelle de la chemise de masque (7) autour des points de soudure (SP3, SP8) des côtés courts entre les encoches (10), est située dans le rapport suivant : A/B = 2/3.
  3. Tube image couleur selon l'une des revendications 1 ou 2, caractérisé en ce que le rapport, entre l'espacement moyen D des encoches (10), des deux côtés des points de soudure, et la profondeur (H2-H3) maximale des encoches (10), présente la valeur suivante : D/(H2-H3) = 23/17.
  4. Tube image couleur selon l'une des revendications 1 à 3, caractérisé en ce que chacune des encoches (10) sur le côté opposé aux points de soudure (SP3, SP8) présente, à une distance déterminée, des fentes de désaccouplement (11) supplémentaires, dont le rapport entre l'espacement moyen E, et l'espacement moyen D des encoches (10), présente la valeur suivante : D/E = 23/50.
  5. Tube image couleur selon la revendication 4, caractérisé en ce que le rapport entre la profondeur maximale H2-H1 de la fente de désaccouplement (11), et la profondeur maximale H2-H3 des encoches (10), présente la valeur suivante : (H2-H1)/(H2-H3) = 11/17.
  6. Tube image couleur selon l'une des revendications 4 ou 5, caractérisé en ce que le rapport, entre la largeur A des encoches (10) et la largeur C des fentes de désaccouplement (11), est de la valeur suivante : A/C = 9/4.
  7. Tube image couleur selon l'une des revendications 1 à 6, caractérisé en ce que la chemise de masque (7) est en appui et est soudée sur la face intérieure du cadre (1) ; et
    la combinaison masque-cadre présente des points de soudure (SP2, SP4, SP7, SP9) dans chacun des quatre angles, au moins un point de soudure (SP1, SP5, SP6, SP10) sur chacun des côtés longs et un point de soudure (SP3, SP8) sur chacun des côtés courts.
EP97101498A 1997-01-30 1997-01-30 Tube image couleur avec un ensemble masque-cadre Expired - Lifetime EP0858094B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97101498A EP0858094B1 (fr) 1997-01-30 1997-01-30 Tube image couleur avec un ensemble masque-cadre
DE59707047T DE59707047D1 (de) 1997-01-30 1997-01-30 Farbbildröhre mit einer Masken-Rahmen-Kombination
US09/015,969 US6043597A (en) 1997-01-30 1998-01-30 Color picture tube having a mask of a first material connected to a frame of a second material by plural weld spots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97101498A EP0858094B1 (fr) 1997-01-30 1997-01-30 Tube image couleur avec un ensemble masque-cadre

Publications (2)

Publication Number Publication Date
EP0858094A1 EP0858094A1 (fr) 1998-08-12
EP0858094B1 true EP0858094B1 (fr) 2002-04-17

Family

ID=8226425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101498A Expired - Lifetime EP0858094B1 (fr) 1997-01-30 1997-01-30 Tube image couleur avec un ensemble masque-cadre

Country Status (3)

Country Link
US (1) US6043597A (fr)
EP (1) EP0858094B1 (fr)
DE (1) DE59707047D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246164B1 (en) * 1999-04-01 2001-06-12 Thomson Licensing S.A. Color picture tube having a low expansion tension mask attached to a higher expansion frame
US6559585B2 (en) * 2000-05-26 2003-05-06 Kabushiki Kaisha Toshiba Color cathode ray tube

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134436B1 (fr) * 1971-04-28 1975-06-20 It
US3855493A (en) * 1972-10-30 1974-12-17 Gen Electric Shadow mask and process for manufacture
DE2549732A1 (de) * 1975-11-06 1977-05-26 Licentia Gmbh Farbwahlmaskenanordnung fuer eine farbbildkathodenstrahlroehre
DE2549789A1 (de) * 1975-11-06 1977-05-18 Licentia Gmbh Lochmasken-farbbildkathodenstrahlroehre
DE3115799C2 (de) 1981-04-18 1985-05-30 Standard Elektrik Lorenz Ag, 7000 Stuttgart Farbauswahlelektrode für Farbfernsehröhren und Verfahren zu ihrer Herstellung
DE4119481A1 (de) 1991-06-13 1992-12-17 Nokia Deutschland Gmbh Masken-rahmen-kombination fuer eine farbbildroehre
JPH07235270A (ja) * 1994-02-21 1995-09-05 Mitsubishi Denki Eng Kk シャドウマスク型カラー受像管

Also Published As

Publication number Publication date
US6043597A (en) 2000-03-28
EP0858094A1 (fr) 1998-08-12
DE59707047D1 (de) 2002-05-23

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