GB1248532A - Grid for color picture tube - Google Patents

Grid for color picture tube

Info

Publication number
GB1248532A
GB1248532A GB7735/69A GB773569A GB1248532A GB 1248532 A GB1248532 A GB 1248532A GB 7735/69 A GB7735/69 A GB 7735/69A GB 773569 A GB773569 A GB 773569A GB 1248532 A GB1248532 A GB 1248532A
Authority
GB
United Kingdom
Prior art keywords
apertures
grid
plate
microns
wide
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
Application number
GB7735/69A
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB1248532A publication Critical patent/GB1248532A/en
Expired legal-status Critical Current

Links

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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • H01J29/803—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching for post-acceleration or post-deflection, e.g. for colour switching
    • 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

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1,248,532. Making grids for cathode-ray tubes. SONY CORP. 12 Feb., 1969 [12 Feb., 1968], No. 7735/69. Heading B3A. [Also in Division H1] A grid in a colour television tube comprises a number of parallel elongate elements 13 shaped to provide apertures 17 which are wide in the centre and taper at the ends, the apertures having a width in microns given by the equation 122 - αx<SP>2</SP> - #y<SP>2</SP> where x and y are space coordinates and α and # are constants; this reduces microphony, increases the luminance at the centre of the screen, and reduces the effect of the earth's magnetic field. In manufacture, the apertures 17 are made by photo-etching a stainless steel plate which is provided at its edges with a pair of slits 14 opposite every third aperture 17. The tabs 16 formed between the slits 14 are gripped between opposed chucks (Fig. 2, not shown) individually tensioned to produce a desired pattern of pre-tension in the grid elements 13 to reduce the effect of thermal expansion. Support bars are welded to the plate, after which the tabs 16 projecting beyond the support bars are cut off, and the edges of the plate may be cut off at the wide slot 15 provided at each side of the plate. In one example the pitch of the apertures 17 is 600 microns, and the phosphor strips of the screen arranged behind the grid are 210 microns wide.
GB7735/69A 1968-02-12 1969-02-12 Grid for color picture tube Expired GB1248532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP904368 1968-02-12

Publications (1)

Publication Number Publication Date
GB1248532A true GB1248532A (en) 1971-10-06

Family

ID=11709600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7735/69A Expired GB1248532A (en) 1968-02-12 1969-02-12 Grid for color picture tube

Country Status (11)

Country Link
US (1) US3573528A (en)
AT (1) AT284218B (en)
BE (1) BE728214A (en)
CH (1) CH497785A (en)
CS (1) CS155197B2 (en)
DK (1) DK123953B (en)
FR (1) FR2001776A1 (en)
GB (1) GB1248532A (en)
NL (1) NL148438B (en)
NO (1) NO122853B (en)
SE (1) SE349892B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262652A (en) * 1991-12-06 1993-06-23 Sony Corp Aperture grill

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652895A (en) * 1969-05-23 1972-03-28 Tokyo Shibaura Electric Co Shadow-mask having graduated rectangular apertures
JPS4831372B1 (en) * 1969-05-31 1973-09-28
US4810928A (en) * 1982-12-06 1989-03-07 Hitachi, Ltd. Cathode-ray tube for constituting large picture display apparatus
JP2000031885A (en) * 1998-07-16 2000-01-28 Ntt Mobil Communication Network Inc Normal connection confirmation method for mobile station
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733366A (en) * 1956-01-31 Grimm ctal
US2862107A (en) * 1951-04-06 1958-11-25 Gen Electric Means for and method of controlling the generation of x-rays
US2729760A (en) * 1953-03-17 1956-01-03 Chromatic Television Lab Inc Electrode structure for cathode-ray tubes for image production in natural color
US2722623A (en) * 1953-03-31 1955-11-01 Rca Corp Color-kinescopes etc.
US2889483A (en) * 1954-09-01 1959-06-02 Sylvania Electric Prod Glass base grid
US2859438A (en) * 1955-01-31 1958-11-04 Hughes Aircraft Co Range-height parallel-type radar system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262652A (en) * 1991-12-06 1993-06-23 Sony Corp Aperture grill
US5396145A (en) * 1991-12-06 1995-03-07 Sony Corporation Aperture grill having additional slits preventing deformation of end slits and capable of intercepting light rays

Also Published As

Publication number Publication date
US3573528A (en) 1971-04-06
NO122853B (en) 1971-08-23
AT284218B (en) 1970-09-10
FR2001776A1 (en) 1969-10-03
DK123953B (en) 1972-08-21
CS155197B2 (en) 1974-05-30
SE349892B (en) 1972-10-09
NL6902220A (en) 1969-08-14
NL148438B (en) 1976-01-15
BE728214A (en) 1969-07-16
CH497785A (en) 1970-10-15
DE1907010B2 (en) 1972-09-14
DE1907010A1 (en) 1969-09-11

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