WO1999041764A1 - Tube cathodique couleur - Google Patents
Tube cathodique couleur Download PDFInfo
- Publication number
- WO1999041764A1 WO1999041764A1 PCT/JP1999/000579 JP9900579W WO9941764A1 WO 1999041764 A1 WO1999041764 A1 WO 1999041764A1 JP 9900579 W JP9900579 W JP 9900579W WO 9941764 A1 WO9941764 A1 WO 9941764A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- effective surface
- mask
- mentioned
- ray tube
- Prior art date
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000010894 electron beam technology Methods 0.000 claims description 18
- 231100000241 scar Toxicity 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000002542 deteriorative effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241001274197 Scatophagus argus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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
-
- 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
- H01J2229/0794—Geometrical arrangements, e.g. curvature
Definitions
- the present invention relates to a color cathode ray tube, and in particular, a color which increases a shadow mask's curved surface holding strength and reduces a deviation of a beam landing.
- a color cathode ray tube and in particular, a color which increases a shadow mask's curved surface holding strength and reduces a deviation of a beam landing.
- a color cathode ray tube is provided with a vacuum envelope, and the vacuum envelope is provided around an effective portion formed of a curved surface and a periphery of the effective portion.
- a substantially rectangular panel having the scattered portion and a funnel joined to the scattered portion are provided.
- a fluorescent layer composed of a black non-luminescent layer and a three-color phosphor layer embedded in the gap between the black non-luminescent layer is provided.
- An optical body screen 5 is formed.
- a roughly rectangular shadow mask is arranged on the inner side of the phosphor screen opposite to the phosphor screen.
- An electron gun that emits three electron beams is arranged in the neck of the funnel.
- the inner shield attached to the mask frame of the shadow mask is disposed inside the large diameter portion of the funnel.
- the three electron beams emitted from the electron gun are subjected to the magnetic field generated by the deflection device mounted on the outside of the funnel.
- the horizontal direction and vertical scanning of the phosphor screen through the shadow mask are more deflected, and a color image is displayed.
- the shadow mask is for selecting the three electron beams emitted from the electron gun with respect to the three-color phosphor layer, and has a substantially rectangular shape. It has a mask body and a substantially rectangular mask frame attached to the periphery of the mask body.
- Mask book The body has an effective surface formed with a large number of electron beam passage holes and a curved surface facing the phosphor screen, and an outer periphery of the effective surface. A non-porous portion, and a skirt portion bent substantially at right angles to the outer periphery of the non-porous portion.
- the mask frame is attached to the scar section of the mask body.
- the shadow mask is provided with a wedge-shaped elastic support attached to a part of each corner of the mask frame, and the shadow of the corner of the panel. It is detachably supported on the panel by being locked to a stud bin installed in the cart.
- a shadow mask is formed on the mask body of the shadow mask. Select the electron beams so that the three electron beams passing through the formed electron beam passage hole land properly on the three-color phosphor layer. Need to be In order to do so, it is necessary to arrange the shadow mask in a predetermined positional relationship with respect to the non-cell, particularly, the inner surface of the effective portion of the panel and the mask. It is necessary to keep the distance (q value) from the effective surface of the sock body within a specified allowable range.
- Japanese Patent Laid-Open Publication No. Hei 7-161 6 ⁇ 6 provides a reinforcing bead on the effective surface of the mask body.
- a new technology has been proposed.
- the shape is formed as a result. Due to the step, the gap between the inner surface of the panel's effective part and the effective surface of the mask body is locally outside the allowable range, and the image of the step appears on the screen. , Deteriorating the image quality.
- the height of the step formed by the reinforcing beads is usually limited to about 0.1 to 0.2 mm. Even if such a reinforcing bead is provided on a shadow mask having a large radius of curvature of the effective surface, the curved surface holding strength is sufficiently increased. I can't do this.
- the present invention has been made in view of the above problems, and its purpose is to increase the curved surface holding strength of the mask body so as to increase the brightness.
- An object of the present invention is to provide a color cathode ray tube which can reduce color shift and hardly deteriorate color purity.
- the color cathode ray tube includes a panel having a substantially rectangular effective portion, and a panel connected to the panel.
- a vacuum envelope having a panel, a phosphor screen formed on an inner surface of an effective portion of the panel, and A shadow mask provided in the vacuum envelope so as to face the phosphor screen, and the shadow mask includes a large number of electron beams.
- An effective surface having a through hole formed therein and having a curved surface facing the phosphor screen; and a solid portion surrounding the outer periphery of the effective surface.
- a substantially rectangular mask body having a scat part formed by bending the outer periphery of the non-porous part; and a scar part of the mask body. It has a substantially rectangular mask frame attached to it, and
- An electron gun which is disposed in the neck of the above-mentioned funnel and which emits an electron beam through the shadow mask to the phosphor screen. , are provided.
- the mask body extends in the horizontal direction and has a long axis that intersects the pipe axis, and the vertical axis extends in the vertical direction. And a short axis crossing the long axis and the long axis.
- the above-mentioned effective surface of the mask body or the above-mentioned effective surface and the above-mentioned non-porous portion are formed into a curved surface having a curvature along the above-mentioned short axis direction, In each of the long sides of the mask body, the portion of the short surface end of the effective surface or the non-porous portion is closer to the tube axis than other adjacent portions.
- the portion of the short surface end of the effective surface or the non-porous portion is closer to the tube axis than other adjacent portions.
- the effective surface, the effective surface, and the non-porous portion of the mask body are formed in the short axis direction. Is formed on a curved surface having a curvature along the direction, and on each of the long sides of the mask body, the effective surface or the long axis of the non-porous portion is provided. At least one part of the middle section in the direction is more distant from the phosphor screen along the direction of the tube axis than other adjacent parts Is falling in the direction of
- a mask is provided.
- the effective surface or the effective surface and the non-porous portion of the main body are formed on a curved surface having a curvature along the short axis direction, and the mask main body described above.
- at least a part of the above-mentioned effective surface and the above-mentioned non-porous part is adjacent to the above-mentioned major axis near the above-mentioned minor axis.
- the above-mentioned configuration is such that, as compared to the other parts, it falls down in the direction away from the phosphor screen along the tube axis direction as described above.
- a bend is formed in the effective surface of the mask body or in the long side of the non-porous portion, thereby bending the outer surface of the effective portion of the panel. Even if the radius of curvature of the effective surface of the mask body is increased with the increase of the radius of curvature, the effective surface of the mask body is That Ki out and the child you high rather than maintain the song surface holding strength. Therefore, local deformation of the shadow mask in the manufacturing process of the shadow mask, or the shadow mask in the manufacturing process of the color cathode ray tube.
- the image of the dip may appear on the image because the q value is out of the allowable range due to the drop, and the image quality may be degraded. It is important to ensure that it does not deteriorate.
- the radius of curvature in the direction along the short axis of the mask body has a curved surface holding effect near the short axis end (near the long side).
- the radius of curvature should be sufficient to allow for this, and the radius of curvature in the other central and peripheral areas, so-called intermediate areas, should be greater than near the minor axis end. Increasing the size will reduce the impact of the dip in the main area of the effective area.
- the radius of curvature in the minor axis direction at the major axis end (short side) of the mask body is as follows. It is preferred that the radius of curvature be larger than the radius of curvature near the minor axis, or it can be infinite.
- the long side is longer, so that only the long side (short axis end) has a drop. It is effective to select the radius of curvature in the short axis direction as appropriate, so that the short side (the end of the long axis) is more flat.
- FIGS. 1 to 4 show a color cathode ray tube according to an embodiment of the present invention
- FIG. 1 is a cross-sectional view of the above color cathode ray tube.
- FIG. 2 is a perspective view showing the mask body of the shadow mask in the above color cathode ray tube
- Fig. 3 is a side view of the mask body
- FIG. 4 is a cross-sectional view of the mask body taken along the line IV-IV of FIG.
- FIG. 5 is a perspective view showing a mask body according to another embodiment.
- FIG. 6 is a perspective view showing a mask body according to another embodiment in addition to the present invention.
- FIG. 7 is a perspective view showing a mask body according to another embodiment of the present invention.
- FIG. 8 is a side view of the mask body shown in FIG.
- the color cathode ray tube is provided with a vacuum envelope 10 which has an effective portion 30 consisting of a curved surface and an effective portion 30 of the effective portion.
- a substantially rectangular panel 32 having a skirt portion 31 provided in the peripheral portion, and a funnel 33 joined to the skirt portion are provided. , Are provided.
- On the inner surface of the effective portion 30 of the panel 32 a black non-luminescent material layer and a three-color phosphor layer embedded in the gap between the black non-luminescent material layer are formed.
- the resulting phosphor screen 34 has been formed.
- a substantially rectangular shadow mask 35 is disposed on the inner side of the phosphor screen 34 so as to face the phosphor screen 34.
- An electron gun 38 that emits a three-electron beam is provided in a neck 36 of the funnel 33. Inside the large diameter part 39 of the funnel 33, an inner shield 40 attached to the mask frame of the shadow mask 35 is arranged. It has been placed.
- the three electron beams 37 R, 37 B, and 37 G emitted from the electron gun 38 are placed outside the funnel 33.
- the phosphor screen 34 is horizontally and vertically scanned through a shadow mask 35 by being redirected by the magnetic field generated by the mounted deflection device 41. By doing so, a color image is displayed.
- the shadow mask 35 is attached to the substantially rectangular mask body 46 and the periphery of the mask body.
- a substantially rectangular mask frame 47 is provided.
- the mask body 46 has a length that is orthogonal to each other through the pipe axis Z. It has an axis (horizontal axis) X and a short axis (vertical axis) Y, and is formed in a rectangular shape elongated in the direction of the long axis. Further, the mask body 46 has a substantially rectangular effective surface 43 in which a large number of electron beam passage holes 42 are formed, and a solid portion surrounding the outer periphery of the effective surface.
- the effective surface 43 is a curved surface that faces the phosphor screen 34 and is convex toward the phosphor screen 34. It is configured .
- the mask part 45 of the mask body 46 is attached to the mask frame 47.
- the shadow mask 35 has a wedge-shaped elastic support 48 attached to each side wall of the mask frame 47, and a scar 32 on the panel 32. It is detachably supported by the panel 32 by being locked to a start bin 49 provided on the inner surface of the port part 31 respectively. .
- the mask body 46 has a radius of curvature along the short axis direction near the short axis Y of the effective surface 43 and the non-porous portion 44. That is, the radius of curvature of the cross section along the minor axis Y near the minor axis Y is the radius of curvature along the minor axis direction of the effective surface and other portions of the non-porous portion. And the radius of curvature along the minor axis direction increases from the minor axis Y to the major axis X end, and the part of the major axis X end increases. Is formed on a curved surface whose radius of curvature along the minor axis direction is almost infinite.
- the mask body 46 has a portion near the short axis Y that extends over the entire length in the short axis direction, and is more phosphorescent than other portions adjacent to the long axis X direction. It is formed so as to fall along the pipe axis Z in a direction away from the clean 34.
- the drop amount of the middle portion 20 a between the short axis Y and the long axis X end, and the short axis Y end 2 The difference from the drop in O c is indicated by d.
- the effective surface 43 and the non-porous portion 44 of the mask body 46 have the short axis Y end 20 c near the above-described long side.
- the drop is larger than that of the adjacent part, and the amount of the drop is the middle part 20a of the long side, the diagonal end 20b, that is, the corner part and the short end.
- the effective surface and the non-porous portion are the largest at the position of the short-axis Y end 20 c.
- the drop near the short axis Y of the effective surface 43 is limited to the inner surface of the effective portion 30 of the panel 32.
- the distance (q value) between the mask and the effective surface 43 of the mask body 46 is within the allowable range.
- the radius of curvature of the outer surface of the effective portion 30 of the panel 32 is increased in order to improve the visibility. Accordingly, even when the radius of curvature of the effective surface 43 of the mask body 46 is increased, the curved surface holding strength of the effective surface 43 can be maintained high. And can be done. Therefore, local deformation of the shadow mask in the shadow mask manufacturing process, and thermal deformation of the shadow mask in the manufacturing process of the color cathode ray tube. In addition to suppressing the resonance of the shadow mask due to the sound from the speaker when the color cathode ray tube is incorporated in the TV set, the color purity can be suppressed. It is possible to construct a color cathode ray tube which is hardly deteriorated.
- the mask body 46 has an effective surface 43 and a radius of curvature along the direction of the minor axis Y near the minor axis Y of the solid portion 44.
- the radius of curvature along the short axis Y direction of the surface 43 and the other part of the non-porous portion 4 4 is smaller than the radius of curvature along the short axis Y direction, and the half curvature along the short axis Y direction.
- the diameter increases from the minor axis Y to the major axis X end, and the radius of curvature along the minor axis direction is almost non-existent at the major axis X end. It is formed on a limited surface.
- the mask body 46 has a portion near the short axis that is farther from the phosphor screen 34 than other portions that are adjacent in the long axis X direction. It is formed so as to fall along the pipe axis Z in a direction.
- the drop on the long side of the active surface 43 and the non-porous portion 4 4 is caused by the long axis X direction.
- the effective surface 43 and the non-porous portion 44 have the smallest radius of curvature on the short axis Y, and the lowest at the short axis end. It was designed as a curved surface with a large amount of penetration, but it is not limited to this, and at least one portion in the middle part in the direction of the long axis X has an effective surface and a non-porous portion. The radius of curvature in the minor axis direction is smaller than that of the other parts. However, at least one portion of the long side of the mask main body 46 in the middle part in the long axis direction may be formed to be lower than the adjacent portion.
- a mask portion that is apt to be locally deformed in the manufacturing process is reinforced to reduce the color purity due to the locally deformed portion.
- the dough mask is assembled into a color cathode ray tube in a TV set, the locally deformed portion resonates with the sound from the speaker. It is possible to construct a color cathode ray tube, which is difficult to reduce the color purity caused by the deterioration.
- the radius of curvature of the effective surface 43 and the non-porous portion 44 along the short axis Y at the long axis X end is substantially infinite.
- the present invention is based on the effective surface 43 and the non-porous portion 4 4. Even if the present invention is applied to a shadow mask having a curved surface having a limited radius of curvature along the short axis Y at the end of the long axis X, the form and the form of the above-described embodiment are applied. A similar effect can be obtained.
- the mask body 46 may be constituted by the curved surfaces shown in FIGS. That is, according to this embodiment, the radius of curvature along the short axis direction near the short axis Y of the effective surface 43 and the non-porous portion 4 4 of the mask body 46. Is smaller than the radius of curvature along the short axis direction of the other parts, and the Y-end of the short axis on each long side is lower than the adjacent part. However, the central portion of the active surface 43 protrudes more toward the phosphor screen than the other portion along the major axis X. . Even when the mask body having such a configuration is used, the same effects as those of the above-described embodiment can be obtained. Also, the central part of the effective surface 43 is almost flush with the other part in the long axis X direction. The same effect as above can be obtained even if it is configured.
- the invention is not limited to the various embodiments described above, but can be variously modified within the scope of the invention.
- the mask body is configured so that a similar notch is provided on the effective surface and on the long side of the non-porous part.
- the present invention is not limited to this.
- the effective surface is formed into a curved surface having a curvature along the minor axis direction, and falls into either the effective surface or the longer side of the childless L portion.
- the section may be formed as a part. In this case, the same effects as those of the above-described embodiment can be obtained.
- the color cathode ray tube of the present invention a drop is provided on the effective surface of the mask body or the long side of the non-porous portion. Therefore, even if the radius of curvature of the effective surface of the mask body is increased in accordance with the increase in the radius of curvature of the outer surface of the effective portion of the panel, the mask body is not affected. It is possible to maintain the curved surface holding strength of the effective surface of the high. Therefore, local deformation of the shadow mask in the shadow mask manufacturing process, and shadow mask in the color cathode ray tube manufacturing process.
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/402,479 US6437495B1 (en) | 1998-02-13 | 1999-02-10 | Color cathode ray tube with curved shadow mask having central recessed portions |
EP99932534A EP0978862A4 (en) | 1998-02-13 | 1999-02-10 | COLOR CATHODIC TUBE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10031291A JPH11233038A (ja) | 1998-02-13 | 1998-02-13 | カラー受像管 |
JP10/31291 | 1998-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999041764A1 true WO1999041764A1 (fr) | 1999-08-19 |
Family
ID=12327215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/000579 WO1999041764A1 (fr) | 1998-02-13 | 1999-02-10 | Tube cathodique couleur |
Country Status (8)
Country | Link |
---|---|
US (1) | US6437495B1 (ja) |
EP (1) | EP0978862A4 (ja) |
JP (1) | JPH11233038A (ja) |
KR (1) | KR100346976B1 (ja) |
CN (1) | CN1146946C (ja) |
MY (1) | MY123247A (ja) |
TW (1) | TW416075B (ja) |
WO (1) | WO1999041764A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100647573B1 (ko) * | 2000-10-13 | 2006-11-17 | 삼성에스디아이 주식회사 | 칼라 음극선관용 텐션마스크 조립체 |
JP2004037874A (ja) * | 2002-07-03 | 2004-02-05 | Seiko Epson Corp | 実装ケース入り電気光学装置及び投射型表示装置 |
ITMI20021824A1 (it) * | 2002-08-13 | 2004-02-14 | Videocolor Spa | Perfezionamento ai tubi a raggi catodici a colori |
JP2006059574A (ja) * | 2004-08-17 | 2006-03-02 | Matsushita Toshiba Picture Display Co Ltd | カラー受像管 |
US20060087215A1 (en) * | 2004-10-22 | 2006-04-27 | Matsushita Toshiba Picture Display Co., Ltd. | Cathode ray tube |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57154750A (en) * | 1977-06-24 | 1982-09-24 | Rca Corp | Shadow mask type cathode ray tube |
JPS59217930A (ja) * | 1983-05-24 | 1984-12-08 | Mitsubishi Electric Corp | シヤドウマスク式カラ−陰極線管 |
JPS60177534A (ja) * | 1984-02-23 | 1985-09-11 | Toshiba Corp | カラ−受像管 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4162421A (en) | 1975-03-19 | 1979-07-24 | Rca Corporation | Cathode ray tube having corrugated shadow mask with slits |
GB1546889A (en) | 1975-03-19 | 1979-05-31 | Rca Corp | Cathode ray tube having shadow mask |
US4136300A (en) * | 1975-03-19 | 1979-01-23 | Rca Corporation | Cathode ray tube having improved shadow mask |
US4072876A (en) | 1976-10-04 | 1978-02-07 | Rca Corporation | Corrugated shadow mask assembly for a cathode ray tube |
US4727280A (en) * | 1984-03-30 | 1988-02-23 | Mitsubishi Denki Kabushiki Kaisha | Shadow mask for color cathode ray tube shaped to minimize doming |
JPH07111877B2 (ja) * | 1987-09-10 | 1995-11-29 | 三菱電機株式会社 | 架張形シヤドウマスク |
JP3354254B2 (ja) * | 1993-02-16 | 2002-12-09 | 株式会社東芝 | カラー受像管 |
JP3526466B2 (ja) * | 1993-11-26 | 2004-05-17 | 株式会社東芝 | カラー受像管 |
US6025676A (en) * | 1996-03-06 | 2000-02-15 | Kabushiki Kaisha Toshiba | Cathode ray tube having improved curvature characteristics and method of fabrication thereof |
DE69718986T2 (de) * | 1996-11-11 | 2004-01-08 | Kabushiki Kaisha Toshiba, Kawasaki | Schattenmaske und Verfahren zu deren Herstellung |
TW373214B (en) * | 1996-12-18 | 1999-11-01 | Toshiba Corp | Color cathode ray tube and its fabricating method |
KR100279758B1 (ko) * | 1997-03-14 | 2001-03-02 | 니시무로 타이죠 | 칼라 음극선관 |
-
1998
- 1998-02-13 JP JP10031291A patent/JPH11233038A/ja not_active Abandoned
-
1999
- 1999-02-08 TW TW088101911A patent/TW416075B/zh not_active IP Right Cessation
- 1999-02-10 EP EP99932534A patent/EP0978862A4/en not_active Withdrawn
- 1999-02-10 WO PCT/JP1999/000579 patent/WO1999041764A1/ja active IP Right Grant
- 1999-02-10 CN CNB998002984A patent/CN1146946C/zh not_active Expired - Fee Related
- 1999-02-10 US US09/402,479 patent/US6437495B1/en not_active Expired - Fee Related
- 1999-02-10 KR KR1019997009338A patent/KR100346976B1/ko not_active IP Right Cessation
- 1999-02-13 MY MYPI99000539A patent/MY123247A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57154750A (en) * | 1977-06-24 | 1982-09-24 | Rca Corp | Shadow mask type cathode ray tube |
JPS59217930A (ja) * | 1983-05-24 | 1984-12-08 | Mitsubishi Electric Corp | シヤドウマスク式カラ−陰極線管 |
JPS60177534A (ja) * | 1984-02-23 | 1985-09-11 | Toshiba Corp | カラ−受像管 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0978862A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR20010006254A (ko) | 2001-01-26 |
CN1146946C (zh) | 2004-04-21 |
TW416075B (en) | 2000-12-21 |
CN1258375A (zh) | 2000-06-28 |
EP0978862A1 (en) | 2000-02-09 |
MY123247A (en) | 2006-05-31 |
KR100346976B1 (ko) | 2002-07-31 |
JPH11233038A (ja) | 1999-08-27 |
EP0978862A4 (en) | 2006-12-06 |
US6437495B1 (en) | 2002-08-20 |
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