EP1138797A1 - Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat à masque d'ombre tendu en alliages Fe-Ni - Google Patents

Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat à masque d'ombre tendu en alliages Fe-Ni Download PDF

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Publication number
EP1138797A1
EP1138797A1 EP01400812A EP01400812A EP1138797A1 EP 1138797 A1 EP1138797 A1 EP 1138797A1 EP 01400812 A EP01400812 A EP 01400812A EP 01400812 A EP01400812 A EP 01400812A EP 1138797 A1 EP1138797 A1 EP 1138797A1
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EP
European Patent Office
Prior art keywords
alloy
shadow mask
hardened
support frame
temperature
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.)
Withdrawn
Application number
EP01400812A
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German (de)
English (en)
French (fr)
Inventor
Ricardo Cozar
Pierre-Louis Reydet
Lucien Coutu
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.)
Aperam Stainless Precision SAS
Original Assignee
Imphy Ugine Precision SA
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 Imphy Ugine Precision SA filed Critical Imphy Ugine Precision SA
Publication of EP1138797A1 publication Critical patent/EP1138797A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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
    • H01J2229/0722—Frame
    • 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
    • H01J2229/0733—Aperture plate characterised by the material

Definitions

  • the present invention relates to a masking device for a tube cathode color display flat screen, of the type comprising a frame support for a stretched shadow mask and a stretched shadow mask mounted on the support frame.
  • Color display cathode ray tubes have, so known, a display screen provided with photophores, an electron gun producing 3 electron beams and a masking device, consisting of a shadow mask mounted on a support frame, placed opposite the screen of display and intended to ensure good quality of the image viewed.
  • the shadow mask consists of a metal sheet pierced with a plurality of holes or slits through which the 3 electron beams pass to excite the photophores arranged on the screen. The quality of the image obtained is all the more better than the alignment between the lanterns, the holes in the shadow mask and the electron beams are precise.
  • the shadow mask When the viewing tube is in functioning, a significant part of the electron beams is intercepted by the shadow mask, which generates local heating of it which can distort it and therefore deteriorate the quality of the displayed image.
  • the quality of the image may also be deteriorated by the vibrations of the shadow mask caused by various sources of vibration.
  • the shadow mask To obtain images of good quality, the shadow mask must on the one hand be not very sensitive to local heating, on the other hand, have a natural frequency of vibration high enough that the amplitude of these vibrations does not disturb the color of images by misalignment of electron beams, holes in the shadow mask and tealight holders.
  • the shadow mask When the viewing screen is curved, the shadow mask has a shape which matches that of the screen, and the problems of sensitivity to overheating and vibration are resolved by making the shadow mask by stamping a sheet of Fe-Ni alloy with a very low coefficient of expansion pierced with holes.
  • the shadow mask is simply welded to a support frame which exerts no effort on the shadow mask. The frame can therefore be light, which presents benefits.
  • the shadow mask can be a sheet not stamped fixed for example by welding on a support frame previously compressed which then exerts a tension on the shadow mask.
  • the shadow mask is then said to be "stretched".
  • the tension of the shadow mask is intended, on the one hand to solve the problem of sensitivity to local heating, and on the other hand to increase the natural frequency of vibration of the shadow mask for attenuate the amplitude of these vibrations.
  • This solution requires in particular the use of a material whose characteristics make it possible to maintain a tension sufficient in the operating temperature range of the cathode ray tube (approximately 100 ° C), and this after heating to approximately 600 ° C during of the cathode ray tube manufacturing process.
  • the mounted shadow mask stretched on its support frame is heated for the first time to around 600 ° C to cause an oxidation called "blackening", then a second time at around 450 ° C, after assembly of the assembly in the cathode ray tube, during sealing of the screen slab on the glass cone and finally a third time at around 380 ° C when vacuuming the cathode ray tube.
  • blackening an oxidation called "blackening”
  • the support frame of generally rectangular shape, comprises two end posts on which the shadow mask is fixed and two posts side which maintain the spacing of the end posts.
  • the shadow mask also generally rectangular in shape, is attached to the end posts, usually by welding, along two of its sides opposites. In any event, the tension exerted on the shadow mask in the longitudinal direction creates tension in the transverse direction.
  • the object of the present invention is to remedy these drawbacks by proposing a means for manufacturing a stretched shadow mask and its support frame not very sensitive to local heating, having a natural frequency of vibration suitable and having good flatness after high temperature heating resulting from manufacturing operations.
  • the subject of the invention is a masking device for a cathode ray tube for color display on a flat screen, of the type comprising a support frame for a stretched shadow mask and a stretched shadow mask mounted on the support frame. so as to be subjected to a voltage at room temperature.
  • the support frame is made of hardened Fe-Ni alloy having a coefficient of thermal expansion between 20 ° C and 150 ° C less than 5x10 -6 / K and an elastic limit Rp0.2 at 20 ° C greater than 700 MPa.
  • the stretched shadow mask is made of Fe-Ni alloy having a coefficient of thermal expansion between 20 ° C and 150 ° C less than 3x10 -6 / K.
  • the hardened Fe-Ni alloy of which the support frame is made and the Fe-Ni alloy of which the shadow mask is made are chosen so that, below a temperature T 1 , the mean coefficient of expansion ⁇ 20-T , between 20 ° C and temperature T, of the hardened Fe-Ni alloy of which the support frame is made is greater than the average coefficient of expansion ⁇ 20-T , between 20 ° C and temperature T, of l 'Fe-Ni alloy of which the shadow mask is made; above said temperature T 1 , the average coefficient of expansion ⁇ 20-T , between 20 ° C and the temperature T, of the hardened Fe-Ni alloy of which the support frame is made is lower than the average coefficient of expansion ⁇ 20 -T , between 20 ° C and temperature T, of the Fe-Ni alloy from which the shadow mask is made; said temperature T 1 is less than 350 ° C, and preferably less than 300 ° C.
  • the hardened Fe-Ni alloy of which the support frame is made up is an FeNi alloy of the "hardened ⁇ '" type, the chemical composition of which comprises, by weight: 40.5% ⁇ Ni + Co + Cu ⁇ 43.5% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1.5% ⁇ Ti ⁇ 3.5% 0.05% ⁇ Al ⁇ 1% C ⁇ 0.05%
  • the Fe-Ni alloy of which the shadow mask is made is an Fe-Ni alloy, the composition of which comprises, by weight: 32% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0% ⁇ Nb + Ta + Mo + W + Zr ⁇ 2% 0 ⁇ Mn ⁇ 0.5% If ⁇ 0.2% C ⁇ 0.02% S ⁇ 0.01% P ⁇ 0.02%
  • the composition of which comprises, by weight: 40.5% ⁇ Ni + Co + Cu ⁇ 43.5% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu
  • the chemical composition of the Fe-Ni alloy from which the shadow mask is made can, for example, be such that: 32% ⁇ Ni + Co + Cu ⁇ 35.5% 0% ⁇ Co ⁇ 4% 0% ⁇ Cu ⁇ 2% 0% ⁇ Nb + Ta + Mo + W + Zr ⁇ 0.2%
  • the chemical composition of the Fe-Ni alloy from which the shadow mask is made can also be such that: 33.5% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0.2% ⁇ Nb + Ta + Mo + W + Zr ⁇ 2%
  • the hardened Fe-Ni alloy of which the support frame is made up can be a FeNi alloy of the “hardened ⁇ '” type, the chemical composition of which comprises, by weight: 43.5% ⁇ Ni + Co + Cu ⁇ 45.5% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1.5% ⁇ Ti ⁇ 3.5% 0.05% ⁇ Al ⁇ 1% C ⁇ 0.05%
  • the Fe-Ni alloy of which the shadow mask is made up can be an Fe-Ni alloy, the composition of which comprises, by weight: 35.5% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0 ⁇ Mn ⁇ 0.5%
  • ⁇ 0.2% C ⁇ 0.02% S ⁇ 0.01% P ⁇ 0.02% The rest being iron and impurities resulting from processing.
  • the invention also relates to a stretched shadow mask consisting of an Fe-Ni alloy, the chemical composition of which comprises, by weight: 32% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0% ⁇ Nb + Ta + Mo + W + Zr ⁇ 2% 0 ⁇ Mn ⁇ 0.5% If ⁇ 0.2% C ⁇ 0.02% S ⁇ 0.01% P ⁇ 0.02% The rest being iron and impurities resulting from processing.
  • the chemical composition of the Fe-Ni alloy from which the shadow mask is made may preferably be such that: 32% ⁇ Ni + Co + Cu ⁇ 35.5% 0% ⁇ Co ⁇ 4% 0% ⁇ Cu ⁇ 2% 0% ⁇ Nb + Ta + Mo + W + Zr ⁇ 0.2%
  • the chemical composition of the Fe-Ni alloy from which the shadow mask is made can also be such that: 33.5% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0.2% ⁇ Nb + Ta + Mo + W + Zr ⁇ 2%
  • the frame can also be made of a hardened Fe-Ni alloy of the type "Hardened beryllium”, “hardened carbides” or of the type “hardened by solid solution”.
  • the masking device for a color display cathode ray tube flat screen shown in Figure 1 includes a shadow mask 1 consisting of a sheet pierced with a plurality of holes 2, and a support frame 3 comprising lateral uprights 4 (only one visible in the figure) and end uprights 5 and 5 '.
  • the shadow mask 1 is fixed for example by welding to the upper edges 6 and 6 'of the end posts 5 and 5'.
  • the support frame 3 is subjected to compression forces (small arrows in Figure 1) intended to generate an elastic deformation which reduces the distance between the 5 and 5 'end posts, and the shadow mask is subjected to tensile forces (large arrows in Figure 1) intended to generate an elastic elongation deformation.
  • compression forces small arrows in Figure 1
  • tensile forces large arrows in Figure 1
  • the shadow mask is then fixed by welding to the support frame and the compression and tensile forces are deleted.
  • elastic deformations of the support frame and the shadow mask remain, so that the shadow mask remains subject to voltage.
  • the shadow mask must be made of an Fe-Ni alloy having an average coefficient of thermal expansion between 20 ° C and 150 ° C ( ⁇ 20-150 ) less than 3x10 -6 / K so as to be insensitive to local heating when the cathode ray tube is in service.
  • the frame must be made of a hardened Fe-Ni alloy having an elastic limit Rp0.2 at 20 ° C greater than 700 MPa so as to be able to withstand the tensioning forces of the shadow mask.
  • this alloy must have an average coefficient of thermal expansion between 20 ° C and 150 ° C ( ⁇ 20-150 ) greater than that of the alloy of which the shadow mask is made, so as to avoid relaxing the shadow mask in the event of heating, but this coefficient must nevertheless remain lower than 5 ⁇ 10 -6 / K in order to avoid generating excessive overvoltages in the shadow mask.
  • the average coefficient of expansion between 20 ° C and any higher temperature T at 350 ° C, or better higher than 300 ° C, ⁇ 20-T , of the alloy of which the frame is made must be less than the corresponding average coefficient of thermal expansion of the alloy of which the shadow mask is made. Indeed, if this is so, at high temperature, the dimensions of the shadow mask will be more increased than those of the frame and it will result therefrom that the tensions exerted on the shadow mask will be released; there will be little or no creep.
  • the frame can be made of a hardened Fe-Ni alloy of the "hardened ⁇ '" type, the chemical composition of which comprises, by weight: 40.5% ⁇ Ni + Co + Cu ⁇ 43.5% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1.5% ⁇ Ti ⁇ 3.5% 0.05% ⁇ Al ⁇ 1% C ⁇ 0.05% If ⁇ 0.5% Mn ⁇ 0.5% S ⁇ 0.01% P ⁇ 0.02% the remainder being iron and impurities resulting from processing.
  • the elements Co and Cu are not essential and may be trace or even absent. The same is true of the elements C, Si, Mn, S and P.
  • the shadow mask can then be made of an Fe-Ni alloy, the composition of which comprises, by weight: 32% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0% ⁇ Nb + Ta + Mo + W + Zr ⁇ 2% 0 ⁇ Mn ⁇ 0.5% If ⁇ 0.2% C ⁇ 0.02% S ⁇ 0.01% P ⁇ 0.02% The rest being iron and impurities resulting from processing.
  • the elements Co and Cu are not essential and may be trace or even absent. The same is true of the elements C, Si, Mn, S and P.
  • the elements Nb, Ta, Mo, W and Zr are not essential, and may be trace or even absent. However, in quantity significant, i.e. when the sum of their contents is greater than 0.2% approximately, these elements increase ia creep resistance which is favorable since this reduces the risks caused by high temperature heating.
  • a Fe-Ni alloy of the “hardened ⁇ '” type can be used for the frame Fe-42.5Ni-2.6Ti-0.2Al (approximately 42.5% nickel, 2.6 % titanium and 0.2% aluminum (for the main elements), and an Fe-Ni alloy of the Fe-34.7Ni type for the shadow mask.
  • T 1 is equal to 225 ° C. Therefore, the shadow mask has a satisfactory tension and flatness after integration into the cathode ray tube, including for large screens whose diagonals are 68cm, 80cm, 90cm, or even more.
  • the shadow mask although having a satisfactory tension, may have undulations after integration into the cathode ray tube, especially when the screens are large. Indeed, the risk of ripple is all the more important as the screens are large. For frames that are not too large (diagonal less than 76 cm), this solution can give satisfactory results, although this is not always with good reliability due to the dispersions inherent in any industrial production.
  • the hardened Fe-Ni alloy of which the support frame is made up can be an FeNi alloy of the "hardened ⁇ '" type, the chemical composition of which comprises, by weight: 43.5% ⁇ Ni + Co + Cu ⁇ 45.5% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1.5% ⁇ Ti ⁇ 3.5% 0.05% ⁇ Al ⁇ 1% C ⁇ 0.05%
  • the Fe-Ni alloy of which the shadow mask is made can be an Fe-Ni alloy, the composition of which comprises, by weight: 35.5% ⁇ Ni + Co + Cu ⁇ 37% 0% ⁇ Co ⁇ 5.5% 0% ⁇ Cu ⁇ 2% 0 ⁇ Mn ⁇ 0.5%
  • ⁇ 0.2% C ⁇ 0.02% S ⁇ 0.01% P ⁇ 0.02% The rest being iron and impurities resulting from processing.
  • the frame is made of an Fe-44.1Ni-2.6Ti-0.2Al alloy which has an elastic limit Rp0.2 at 20 ° C in the upper hardened state. at 700 MPa, and the shadow mask is made of Fe-36Ni (classic INVAR® alloy).
  • T 1 is equal to 300 ° C.
  • the shadow mask has a satisfactory tension and flatness after integration into the cathode ray tube, including for large screens.
  • the frame is always made of Fe-Ni alloy FeNi of the “hardened ⁇ '” type, but it can also be made of hardened Fe-Ni alloy of "hardened carbide” type, “hardened beryllium” type or “solution hardened” solid ”.
  • composition of an alloy of the “hardened carbides” type comprises, by weight: 36% ⁇ Ni + Co + Cu ⁇ 40% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1.6% ⁇ Mo ⁇ 2.8% 0.4% ⁇ Cr ⁇ 1.5% 0.15% ⁇ C ⁇ 0.35% If ⁇ 0.5% Mn ⁇ 0.5% S ⁇ 0.01% P ⁇ 0.02% the remainder being iron and impurities resulting from processing.
  • composition of an alloy of the “hardened beryllium” type comprises, by weight: 34% ⁇ Ni + Co + Cu ⁇ 38% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 0.15% ⁇ Be ⁇ 1% C ⁇ 0.05% If ⁇ 0.5% Mn ⁇ 1% S ⁇ 0.01% P ⁇ 0.02% the remainder being iron and impurities resulting from processing.
  • composition of an alloy of the “hardened by solid solution” type comprises, by weight: 38% ⁇ Ni + Co + Cu ⁇ 42% 0% ⁇ Co ⁇ 5% 0% ⁇ Cu ⁇ 3% 1% ⁇ Nb ⁇ 4% C ⁇ 0.05% If ⁇ 0.5% Mn ⁇ 0.5% S ⁇ 0.01% P ⁇ 0.02% the remainder being iron and impurities resulting from processing.
  • Fe-Ni alloy of the “hardened ⁇ '” type presents advantages over alloys such as “hardened carbides”, “hardened beryllium” or “Cured by solid solution”.
  • the alloy "hardened ⁇ '" is used in the softened state to form and weld the frame, and the hardening heat treatment is carried out on the finished frame. he on the one hand, the shaping operations are easy to perform and the welds are hardened by the hardening treatment.
  • the other hardened alloys must be used in the hardened state (before shaping and before welding). It follows on the one hand that the operations of setting shaped are more difficult to achieve and on the other hand that the welds are softened by welding heat.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
EP01400812A 2000-03-31 2001-03-29 Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat à masque d'ombre tendu en alliages Fe-Ni Withdrawn EP1138797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004080 2000-03-31
FR0004080A FR2807269B1 (fr) 2000-03-31 2000-03-31 Dispositif de masquage pour tube cathodique de visualisation en couleur a ecran plat a masque d'ombre tendu en alliages fe-ni

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EP1138797A1 true EP1138797A1 (fr) 2001-10-04

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EP01400812A Withdrawn EP1138797A1 (fr) 2000-03-31 2001-03-29 Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat à masque d'ombre tendu en alliages Fe-Ni

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US (1) US6734610B2 (id)
EP (1) EP1138797A1 (id)
JP (1) JP2001297710A (id)
KR (1) KR20010095131A (id)
CN (1) CN1316759A (id)
BR (1) BR0101265A (id)
CA (1) CA2342951A1 (id)
FR (1) FR2807269B1 (id)
ID (1) ID29995A (id)
MX (1) MXPA01003235A (id)
PL (1) PL346817A1 (id)
RU (1) RU2001108595A (id)
TW (1) TW492034B (id)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005250B4 (de) * 2006-02-02 2010-04-29 Thyssenkrupp Vdm Gmbh Eisen-Nickel-Legierung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266654B1 (en) * 1992-12-15 2001-07-24 Softlock.Com, Inc. Method for tracking software lineage
CN116024524A (zh) * 2017-11-21 2023-04-28 Lg伊诺特有限公司 金属板和使用其的沉积掩模
CN109746455B (zh) * 2019-03-19 2022-08-12 湖南恒基粉末科技有限责任公司 一种含铜kovar合金及其制备方法
CN114107838A (zh) * 2020-09-01 2022-03-01 宝武特种冶金有限公司 一种高强度因瓦合金线材及其制造方法

Citations (6)

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Publication number Priority date Publication date Assignee Title
US4713576A (en) * 1985-04-24 1987-12-15 Hitachi, Ltd. Color picture tube with shadow mask
US5502350A (en) * 1993-07-05 1996-03-26 Hitachi Metals Ltd. Shadow mask support member having high strength and thermal deformation resistant low-expansion alloy plate and high expansion alloy plate and method of producing the same
JPH09324243A (ja) * 1996-06-04 1997-12-16 Toshiba Corp Ｓｉの熱膨張係数に近い熱膨張係数を有する低熱膨張合金
US5811918A (en) * 1994-01-17 1998-09-22 U.S. Philips Corporation Shadow mask of the nickel-iron type having specific composition
DE19919812A1 (de) * 1998-04-30 1999-11-04 Dainippon Printing Co Ltd Gestreckte Maske für Farbbildröhre
EP1063304A1 (fr) * 1999-06-22 2000-12-27 Imphy Ugine Precision Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat, du type comprenant un cadre support pour masque d'ombre tendu et masque d'ombre tendu.

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US4639576A (en) * 1985-03-22 1987-01-27 Inco Alloys International, Inc. Welding electrode
FR2728724B1 (fr) * 1994-12-27 1997-01-24 Imphy Sa Procede de fabrication d'un masque d'ombre en alliage fer-nickel
JPH10321153A (ja) * 1997-05-20 1998-12-04 Toshiba Corp カラー受像管
KR100259299B1 (en) * 1998-04-21 2000-06-15 Lg Electronics Inc Shadow mask of color cathode ray tube and method for fabricating the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713576A (en) * 1985-04-24 1987-12-15 Hitachi, Ltd. Color picture tube with shadow mask
US5502350A (en) * 1993-07-05 1996-03-26 Hitachi Metals Ltd. Shadow mask support member having high strength and thermal deformation resistant low-expansion alloy plate and high expansion alloy plate and method of producing the same
US5811918A (en) * 1994-01-17 1998-09-22 U.S. Philips Corporation Shadow mask of the nickel-iron type having specific composition
JPH09324243A (ja) * 1996-06-04 1997-12-16 Toshiba Corp Ｓｉの熱膨張係数に近い熱膨張係数を有する低熱膨張合金
DE19919812A1 (de) * 1998-04-30 1999-11-04 Dainippon Printing Co Ltd Gestreckte Maske für Farbbildröhre
EP1063304A1 (fr) * 1999-06-22 2000-12-27 Imphy Ugine Precision Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat, du type comprenant un cadre support pour masque d'ombre tendu et masque d'ombre tendu.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 04 31 March 1998 (1998-03-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005250B4 (de) * 2006-02-02 2010-04-29 Thyssenkrupp Vdm Gmbh Eisen-Nickel-Legierung
US8808475B2 (en) 2006-02-02 2014-08-19 Outokumpu Vdm Gmbh Iron-nickel alloy

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Publication number Publication date
JP2001297710A (ja) 2001-10-26
RU2001108595A (ru) 2003-03-10
BR0101265A (pt) 2001-11-06
KR20010095131A (ko) 2001-11-03
US6734610B2 (en) 2004-05-11
PL346817A1 (en) 2001-10-08
FR2807269B1 (fr) 2002-11-01
CA2342951A1 (fr) 2001-09-30
FR2807269A1 (fr) 2001-10-05
CN1316759A (zh) 2001-10-10
ID29995A (id) 2001-10-25
US20020008456A1 (en) 2002-01-24
TW492034B (en) 2002-06-21
MXPA01003235A (es) 2004-07-30

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