US3529199A - Shadow mask having elements bridging corners of integral,longitudinally-extending portions - Google Patents
Shadow mask having elements bridging corners of integral,longitudinally-extending portions Download PDFInfo
- Publication number
- US3529199A US3529199A US731930A US3529199DA US3529199A US 3529199 A US3529199 A US 3529199A US 731930 A US731930 A US 731930A US 3529199D A US3529199D A US 3529199DA US 3529199 A US3529199 A US 3529199A
- Authority
- US
- United States
- Prior art keywords
- mask
- corners
- integral
- shadow mask
- longitudinally
- 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
Links
Images
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
- H01J2229/0772—Apertures, cut-outs, depressions, or the like
Definitions
- the invention relates to a color television display cathode-ray tube provided with a shadow mask which has a protruding edge and is secured in the tube immediately in front of the display screen by means of resilient suspension members arranged in the proximity of the corners of the mask and extending substantially along the axis of the tube.
- the invention more particularly relates to such a tube in which the suspension members are shaped and arranged so that when the mask electrode is heated, a correction of the position of the apertures of this electrode relative to the color elements of the display screen is obtained.
- the suspension members used each have the form of a resilient strip and are located in the same plane as the tube axis but are at an angle of approximately 45 to said tube axis.
- An expansion of the mask then involves a pivotal movement of the suspension members about their supporting points on the. glass wall so that the mask is slightly moved towards the display screen.
- each of the suspension members is prefera-bly secured to an auxiliary member which bridges the corner of the mask.
- an auxiliary member which bridges the corner of the mask.
- the suspension member and the auxiliary member are entirely located within the part of the corner of the mask which is not struck by the electron beams.
- FIG. 1 is a sectional view of a corner of a window and mask with a securing member of known construction
- FIGS. 2 and 3 are similar sectional views of two embodiments according to the invention.
- FIG. 4 is a plan view of a corner of a window and mask as shown in FIG. 3.
- reference numeral 1 denotes a glass window to the inner side of which is applied a luminescent screen 10.
- a shadow mask 2 provided with a protruding edge with flange 3 is arranged in the tube.
- the space between the edge of the mask and the edge of the window accommodates a resilient member 4 which is located in the same plane as the tube axis and is at an angle of ap proximately 45 to said tube axis.
- the resilient strip 4 pivots about the supporting point 5 at which the strip 4 bears on a cam of the window 1 so that the mask is moved towards the screen 10.
- the strip 4 can be only very short and is therefore rigid so that difliculties are involved in inserting the mask into and removing it from the window 1 several times during the manufacture of the screen 10.
- FIG. 2 avoids these difficulties in that the resilient strip 4 is bent around the edge with flange 3 of the mask 2 and has a comparatively long resilient part which is at an angle of 45 to the tube axis.
- the end of the strip 4 is secured to an auxiliary member 6.
- This auxiliary member preferably bridges the corner of the mask, as is shown in FIG. 4, so that the mask electrode is considerably strengthened.
- the auxiliary member and the suspension member are entirely located within the part of the corner of the mask which is not struck by the electron beams 11.
- the resilient strip 4 is provided at one end with a pin 9 which is clamped in a recess 8 of a thickened part 7 of the. glass wall of the window 1.
- the pin is centered in the recess 8 by means of a conical upper end and is fixed afterwards in the correct position when the cone is secured on the window, preferably by means of a readily melting kind of glass, as is common practice for color display tubes.
- suspension members may also be shaped differently without departing from the scope of the invention.
- one end of the strip 4 may be bent so that it constitutes the auxiliary member 6.
- a cathode ray tube for the display of color television images comprising, an envelope having a display screen, of the triad, phosphor dot type, a rectangular shadow mask in front of and spaced from the screen, said mask having a peripheral integral portion substantially parallel to the longitudinal axis of said tube and a support member bridging each of the corners of said portion at points remote from the peripheral edge, and a resilient strip connecting each of said support members to a pin in said envelope wall, said strip comprising a portion extending from said pin substantially perpendicular to said longitudinal axis at least as far as said mask, and a connecting portion extending toward said support member at an angle of approximately 45 with said axis whereby expansion of said mask upon heating pivots said resilient members about said pins and moves said mask toward said screen.
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Ink Jet (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6709114A NL6709114A (fr) | 1967-06-30 | 1967-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3529199A true US3529199A (en) | 1970-09-15 |
Family
ID=19800588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US731930A Expired - Lifetime US3529199A (en) | 1967-06-30 | 1968-05-24 | Shadow mask having elements bridging corners of integral,longitudinally-extending portions |
Country Status (10)
Country | Link |
---|---|
US (1) | US3529199A (fr) |
AT (1) | AT278111B (fr) |
BE (1) | BE717386A (fr) |
CH (1) | CH484509A (fr) |
DE (1) | DE1762224C3 (fr) |
ES (1) | ES355601A1 (fr) |
FI (1) | FI54660C (fr) |
FR (1) | FR1571238A (fr) |
GB (1) | GB1172334A (fr) |
NL (1) | NL6709114A (fr) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700949A (en) * | 1971-01-21 | 1972-10-24 | Nippon Electric Co | Color television picture tube |
US3943399A (en) * | 1973-09-07 | 1976-03-09 | Zenith Radio Corporation | Shadow-mask color cathode ray tube with improved mask suspension system |
US4100451A (en) * | 1974-08-19 | 1978-07-11 | Zenith Radio Corporation | Face panel assembly for a color cathode ray tube |
US4300071A (en) * | 1979-12-10 | 1981-11-10 | Zenith Radio Corporation | Four-corner shadow mask suspension system for television cathode ray tubes |
US4439709A (en) * | 1982-04-29 | 1984-03-27 | Rca Corporation | Color picture tube having improved temperature compensating support for a mask-frame assembly |
US4460843A (en) * | 1982-04-29 | 1984-07-17 | Rca Corporation | Color picture tube having improved temperature compensating support for a mask-frame assembly |
EP0195357A2 (fr) * | 1985-03-11 | 1986-09-24 | Kabushiki Kaisha Toshiba | Tube image couleur |
US4723088A (en) * | 1985-03-29 | 1988-02-02 | Kabushiki Kaisha Toshiba | Support members for the mask frame of a CRT |
US4728853A (en) * | 1985-06-27 | 1988-03-01 | Kabushiki Kaisha Toshiba | Color picture tube with support arrangement for a rectangular shadow mask |
US4804880A (en) * | 1986-04-15 | 1989-02-14 | Rank Brimar Limited | Mounting for shadow mask in color cathode ray tubes |
US4939412A (en) * | 1988-03-30 | 1990-07-03 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly |
US4950941A (en) * | 1989-07-21 | 1990-08-21 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly support |
US5012154A (en) * | 1989-12-01 | 1991-04-30 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly support |
US5063325A (en) * | 1990-03-16 | 1991-11-05 | Thomson Consumer Electronics Inc. | Color picture tube having improved shadow mask-frame assembly support |
US5128585A (en) * | 1990-03-16 | 1992-07-07 | Thomson Consumer Electronics, Inc. | Color picture tube having improved corner support for a shadow mask-frame assembly |
US5247224A (en) * | 1990-12-29 | 1993-09-21 | Samsung Electron Devices Co., Ltd. | Color cathode ray tube shadow mask assembly |
US5274301A (en) * | 1987-01-27 | 1993-12-28 | Kabushiki Kaisha Toshiba | Color cathode ray tube panel with shadow mask supports |
US5416380A (en) * | 1992-04-27 | 1995-05-16 | Sony Corporation | Color selection mechanism for cathode ray tube and arm member for the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI71211C (fi) * | 1977-06-22 | 1986-11-24 | Hitachi Ltd | Haollanordning foer en skuggmask i ett faergkatodstraoleroer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755405A (en) * | 1953-10-15 | 1956-07-17 | Rca Corp | Color television tube |
US2846608A (en) * | 1954-09-14 | 1958-08-05 | Rca Corp | Cathode-ray tube |
US2951179A (en) * | 1956-05-28 | 1960-08-30 | Gen Electric | Electron shield for post acceleration cathode ray tube |
US3435268A (en) * | 1966-08-19 | 1969-03-25 | Gen Electric | In-line plural beam cathode ray tube with an aspherical aperture mask |
-
1967
- 1967-06-30 NL NL6709114A patent/NL6709114A/xx unknown
-
1968
- 1968-05-02 DE DE1762224A patent/DE1762224C3/de not_active Expired
- 1968-05-24 US US731930A patent/US3529199A/en not_active Expired - Lifetime
- 1968-06-27 GB GB30765/68A patent/GB1172334A/en not_active Expired
- 1968-06-27 AT AT617968A patent/AT278111B/de not_active IP Right Cessation
- 1968-06-27 FI FI1831/68A patent/FI54660C/fi active
- 1968-06-27 CH CH961768A patent/CH484509A/de not_active IP Right Cessation
- 1968-06-28 BE BE717386D patent/BE717386A/xx unknown
- 1968-06-28 ES ES355601A patent/ES355601A1/es not_active Expired
- 1968-07-01 FR FR1571238D patent/FR1571238A/fr not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755405A (en) * | 1953-10-15 | 1956-07-17 | Rca Corp | Color television tube |
US2846608A (en) * | 1954-09-14 | 1958-08-05 | Rca Corp | Cathode-ray tube |
US2951179A (en) * | 1956-05-28 | 1960-08-30 | Gen Electric | Electron shield for post acceleration cathode ray tube |
US3435268A (en) * | 1966-08-19 | 1969-03-25 | Gen Electric | In-line plural beam cathode ray tube with an aspherical aperture mask |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700949A (en) * | 1971-01-21 | 1972-10-24 | Nippon Electric Co | Color television picture tube |
US3943399A (en) * | 1973-09-07 | 1976-03-09 | Zenith Radio Corporation | Shadow-mask color cathode ray tube with improved mask suspension system |
US4100451A (en) * | 1974-08-19 | 1978-07-11 | Zenith Radio Corporation | Face panel assembly for a color cathode ray tube |
US4300071A (en) * | 1979-12-10 | 1981-11-10 | Zenith Radio Corporation | Four-corner shadow mask suspension system for television cathode ray tubes |
US4439709A (en) * | 1982-04-29 | 1984-03-27 | Rca Corporation | Color picture tube having improved temperature compensating support for a mask-frame assembly |
US4460843A (en) * | 1982-04-29 | 1984-07-17 | Rca Corporation | Color picture tube having improved temperature compensating support for a mask-frame assembly |
EP0195357A3 (en) * | 1985-03-11 | 1988-10-12 | Kabushiki Kaisha Toshiba | Color cathode ray tube |
EP0195357A2 (fr) * | 1985-03-11 | 1986-09-24 | Kabushiki Kaisha Toshiba | Tube image couleur |
US4652792A (en) * | 1985-03-11 | 1987-03-24 | Kabushiki Kaisha Toshiba | Color cathode ray tube with resilient shadow mask support |
US4723088A (en) * | 1985-03-29 | 1988-02-02 | Kabushiki Kaisha Toshiba | Support members for the mask frame of a CRT |
US4728853A (en) * | 1985-06-27 | 1988-03-01 | Kabushiki Kaisha Toshiba | Color picture tube with support arrangement for a rectangular shadow mask |
US4804880A (en) * | 1986-04-15 | 1989-02-14 | Rank Brimar Limited | Mounting for shadow mask in color cathode ray tubes |
US5274301A (en) * | 1987-01-27 | 1993-12-28 | Kabushiki Kaisha Toshiba | Color cathode ray tube panel with shadow mask supports |
US4939412A (en) * | 1988-03-30 | 1990-07-03 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly |
US4950941A (en) * | 1989-07-21 | 1990-08-21 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly support |
US5012154A (en) * | 1989-12-01 | 1991-04-30 | Rca Licensing Corporation | Color picture tube having improved shadow mask-frame assembly support |
US5063325A (en) * | 1990-03-16 | 1991-11-05 | Thomson Consumer Electronics Inc. | Color picture tube having improved shadow mask-frame assembly support |
US5128585A (en) * | 1990-03-16 | 1992-07-07 | Thomson Consumer Electronics, Inc. | Color picture tube having improved corner support for a shadow mask-frame assembly |
US5247224A (en) * | 1990-12-29 | 1993-09-21 | Samsung Electron Devices Co., Ltd. | Color cathode ray tube shadow mask assembly |
US5416380A (en) * | 1992-04-27 | 1995-05-16 | Sony Corporation | Color selection mechanism for cathode ray tube and arm member for the same |
Also Published As
Publication number | Publication date |
---|---|
FI54660C (fi) | 1979-01-10 |
DE1762224C3 (de) | 1978-03-02 |
NL6709114A (fr) | 1968-12-31 |
FI54660B (fi) | 1978-09-29 |
BE717386A (fr) | 1968-12-30 |
ES355601A1 (es) | 1970-01-01 |
DE1762224A1 (de) | 1970-08-13 |
DE1762224B2 (de) | 1977-06-30 |
FR1571238A (fr) | 1969-06-13 |
AT278111B (de) | 1970-01-26 |
GB1172334A (en) | 1969-11-26 |
CH484509A (de) | 1970-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3529199A (en) | Shadow mask having elements bridging corners of integral,longitudinally-extending portions | |
US3803436A (en) | Shadow mask mounting assemblies | |
US3308327A (en) | Cathode ray tube | |
US3986071A (en) | Resilient clamping members for color selection electrode | |
US3585431A (en) | Shadow-mask cathode-ray tube including a masking member comprising a skirt having indentations and projections overlapping and attached to a frame | |
CA1142569A (fr) | Canon electronique | |
US4678964A (en) | Color display tube | |
US6222311B1 (en) | Narrow-neck CRT having a large stem pin circle | |
US4358702A (en) | Color tube shadow mask mount | |
EP0019975B1 (fr) | Tube image de télévision en couleurs | |
US4748371A (en) | Cathode-ray tube shadow mask for low overscan | |
US3735179A (en) | Face panel assembly for color cathode-ray tube | |
US3601650A (en) | Integrated shadow mask structure | |
US3368098A (en) | Shadow mask welded to frame at twelve points | |
US4763039A (en) | Color display tube with corner suspension means | |
US3487251A (en) | Parallelogram mounting fixture for shadow mask | |
US3936691A (en) | Color cathode ray tube frame-color selection electrode support structure | |
US4599533A (en) | Color picture tube having shadow mask frame with truncated corners | |
US5030881A (en) | Color picture tube with shadow mask having improved aperture border | |
EP0430062B1 (fr) | Tube d'images couleurs à support amélioré pour le masque d'ombre et son cadre | |
EP0178857B1 (fr) | Canon à électrons | |
US6288480B1 (en) | Color cathode ray tube | |
GB1584179A (en) | Shadow mask assembly for a cathode ray tube | |
US4455505A (en) | Color picture tube having improved temperature compensating support for a mask-frame assembly | |
US4460843A (en) | Color picture tube having improved temperature compensating support for a mask-frame assembly |