CN1056014C - Shadow mask structure for color cathode ray tube - Google Patents
Shadow mask structure for color cathode ray tube Download PDFInfo
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- CN1056014C CN1056014C CN96106304A CN96106304A CN1056014C CN 1056014 C CN1056014 C CN 1056014C CN 96106304 A CN96106304 A CN 96106304A CN 96106304 A CN96106304 A CN 96106304A CN 1056014 C CN1056014 C CN 1056014C
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- mask structure
- shadow mask
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Abstract
The present invention relates to a shadow mask structure for a color cathode ray tube, which comprises a shadow mask (13) and a frame (10), wherein at least a pair of side surfaces (10a, 10b), (10c, 10d) are respectively provided with a pair of elastic pieces (11a, 11b), (11c, 11d) and one end of each of the elastic pieces (11) is connected with each of the side surface of the frame and extends at a certain angle along the vertical direction of the long edge of the side surface; the shadow mask is tensioned on the other end of each of the elastic pieces. By means of the deformation of the elastic pieces, the shadow mask structure of the present invention can guarantee the shadow mask tensioning on the frame without arched deformation and the frame is light.
Description
The present invention relates to a kind of shadow mask structure for color cathode ray tube, particularly high-resolution whole plane display tube shade mask structure.
Along with the development of picture tube, display tube technology, high-quality new varieties constantly are developed.In recent years, the whole plane kind of height being debated rate is interested, and particularly the display tube that uses as terminal has 17 inches whole plane high resolution display tubes of company's release at present.
This series products has two big characteristics: whole planeization and high-resolution.These two characteristics all require the shadow mask pitch very little, thereby the look drifting problem that the shadow mask thermal expansion is caused is more outstanding.Before, shade mask structure is by triangle section bar rectangularity framework 1, the inboard of triangle section bar, and promptly the string limit is provided with supporting bracket 2, more very thin planar mask 3 is stretched tight on solid shadow mask frame, as shown in Figure 1.Shadow mask is tensioned state, like this, even be subjected to beam bombardment, after temperature raises, also is not easy the distortion of arching upward, thus alleviated the problem that look drifts about.Yet also there are two bigger weak points in this structure: one is that shadow mask frame is too heavy, and another problem is after the shadow mask part is subjected to electron bombard, still can produce the distortion of arching upward.
It is in light weight to the purpose of this invention is to provide a kind of shadow mask frame, and the shadow mask part is subjected to can not produce the distortion of arching upward after the electron bombard, thereby has alleviated the shadow mask structure for color cathode ray tube of look drift.
For reaching above-mentioned purpose, shade mask structure of the present invention comprises: shadow mask and framework, at least one pair of side of said framework is provided with pair of resilient members separately at least, one end of said elastic component is connected with said frame facet, and extend at a certain angle with the vertical direction on the long limit of said side on the edge, and said shadow mask stretches tight on the said elastic component other end.
Shade mask structure of the present invention also comprises: the other end of the said elastic component of said main frame side all is connected with a sub-frame, and said shadow mask stretches tight on said sub-frame.
Restoring force after shade mask structure of the present invention is out of shape by means of elastic component keeps the tensioning state of shadow mask.Even the shadow mask expanded by heating, the distortion of also can not arching upward.Also have, when shadow mask local heating expands, the elastic component of relevant position will be had an effect, and this part is tightened, and avoid the local distortion of arching upward, thereby alleviate the look drift.Owing to adopt discrete elastic component, also can make framework low weight.
Fig. 1 is the shade mask structure schematic diagram of prior art.
Fig. 2 (a) is the stereoscopic schematic diagram of shade mask structure of the first embodiment of the present invention;
Fig. 2 (b) be the first embodiment of the present invention shade mask structure along shown in the profile of A-A ' line of Fig. 2 (a);
Fig. 3 (a) is the stereoscopic schematic diagram of shade mask structure of the second embodiment of the present invention;
Fig. 3 (b) be the second embodiment of the present invention shade mask structure along shown in the profile of B-B ' line of Fig. 3 (a).
Below in conjunction with each accompanying drawing, describe embodiments of the invention in detail.
Fig. 2 (a) is the stereoscopic schematic diagram of shade mask structure of the first embodiment of the present invention; Fig. 2 (b) is the shade mask structure of the first embodiment of the present invention, the profile of A-A ' line of Fig. 2 (a) shown in the edge.Main frame 10 is rectangle.Main frame 10 has two pairs of parallel sides, that is, first, second side 10a, 10b are long limit, and the 3rd, four side 10c, 10d be minor face, in twos relatively and be parallel to each other.
Shade mask structure of the present invention on the side of the first side of framework 10a and second side 10b, respectively is provided with elastic component 11a, a 11b at least.The end limit of this elastic component 11a, 11b is connected with the medial surface lateral surface of the first side 10a of framework and second side 10b, and extend at a certain angle with the vertical direction on the long limit of said side on the edge.Dull and stereotyped thin shadow masks 13 stretches tight on the other end of elastic component 11a, 11b.
In addition, the end limit that shade mask structure of the present invention can also also respectively be provided with elastic component 11c, a 11d in the side of the 3rd side 10c of framework and four side 10d is connected with the 3rd side 10c of framework and the side of four side 10d, and along extending at a certain angle with the vertical direction on the long limit of said side.At this moment, dull and stereotyped thin shadow masks 13 stretches tight on the other end of elastic component 11a, 11b, 11c, 11d.
In addition, as above said, in the shade mask structure of the present invention, can only elastic component 11a, 11b be set, and the 3rd, the 4th liang short side 11a, 11b are not provided with elastic component at first, second two long side 10a, 10b.The other end of this elastic component 11a, 11b also can with sub-frame 12a, 12b, for example, a kind of rigid metal bar welds together.Elastic component is a resilient metal strip, and this resilient metal strip can be made by stainless steel or other alloy material.This elastic component can be welded on the lateral surface of first, second, third, fourth side of framework in addition, but also can be welded in medial surface.During welding shadow-mask 13, two long limits of sub-frame 12 are a little inwardly compressed, so just can be made shadow mask keep suitable tension force.
Make the problem of shadow mask tensioning about two side surface direction or direction, this depends on the intensity of planar mask on both direction.If both direction all has enough intensity, then adopt all modes of tensioning of both direction, can make the smooth better off of shadow mask.The planar mask that has may the transverse strength deficiency, then can only adopt only vertical direction, i.e. the mode tightened of long side direction.
Fig. 3 (a) is the stereoscopic schematic diagram of shade mask structure of the second embodiment of the present invention.Fig. 3 (b) be the second embodiment of the present invention shade mask structure along shown in the profile of B-B ' line of Fig. 3 (a).Shade mask structure of the present invention on the side of the first side of framework 10a and second side 10b, is provided with for example each 4 of a plurality of elastic component 11a1-11aN, 11b1-11bN at least separately.The end of this elastic component 11a, 11b is connected with the side of the first side 10a of framework and second side 10b, and along tiltedly extending with the long limit vertical direction of said side is outwards honorable at a certain angle.The other end of a plurality of elastic component 11a-11aN, the 11b1-11N of every side also welds together with sub-frame 12a, 12b respectively, the elastic component of every side have certain width and at certain intervals with this sub-frame 12a, 12b, for example, a kind of rigid metal bar welds together.Elastic component is a resilient metal strip, and its number N decides on demand and by dull and stereotyped thin plate thin shadow masks 13 intensity.The triangular section that this resilient metal strip can be made by the material of stainless steel or other alloy.During welding shadow-mask 13, sub-frame is a little inwardly compressed on both sides about in the of 12, can make shadow mask keep suitable tension force like this.Planar mask 13 stretches tight on the limit of both sides sub-frame 12a, 12b.
In addition, shade mask structure of the present invention can also also respectively be provided with a plurality of elastic components in the side of the 3rd side 10c and four side 10d as above-mentioned.One end of this elastic component is connected with the 3rd side 10c of framework and the side of four side 10d, and along with the outward-dipping at a certain angle extension of long limit vertical direction of said side.At this moment, planar mask 13 stretches tight on the limit of four limit sub-frame 12a, 12b, 12c, 12d.
Shade mask structure of the present invention is not the tensioning state that keeps shadow mask by means of the framework of heaviness, but keeps the tensioning state of shadow mask by means of the restoring force after the elastic component distortion.If shadow mask is subjected to beam bombardment to produce thermal expansion, elastic component will be taken advantage of a situation shadow mask is outwards stretched, thereby can guarantee whether shadow mask expands all remains on the formation state of tensioning, and can not produce the distortion of arching upward.By means of the elastic component light weight and can separate one the distance discrete, just can make framework low weight.In addition, adopt discrete elastic component, its unique advantage is arranged again: when shadow mask local heating expands, the spring of relevant position will be had an effect, and this a part of tensioning, avoid the local distortion of arching upward.
Claims (8)
1, a kind of shadow mask structure for color cathode ray tube, comprise: shadow mask (13) and framework (10), it is characterized in that, at least one pair of side of said framework (10) (10a, 10b, 10c, 10d) is provided with a pair of elastic component (11a1-N, 11b1-N) separately at least, one end of said elastic component (11) is connected with the side of said framework (10), and extend at a certain angle with the vertical direction on the long limit of said side on the edge, and said shadow mask (13) stretches tight on the other end of said elastic component (11).
2, according to the shade mask structure of claim 1, it is characterized in that: a pair of side of said framework (10) is first side (11a) of framework and second side (11b) of framework.
3, according to the shade mask structure of claim 1 or 2, it is characterized in that: the end limit in the whole said elastic components at least one pair of side of said framework (10) (11a1-N, 11b1-N) all is connected with a sub-frame (12a, 12b).
4, according to the shade mask structure of claim 3, it is characterized in that: said elastic component is an elastic metallic triangular form bar.
5, according to the shade mask structure of claim 3, it is characterized in that: said elastic component is connected in the medial surface or the lateral surface of said framework (10) and sub-frame (12a, 12b).
6, according to the shade mask structure of claim 4, it is characterized in that: said elastic metallic is stainless steel or other alloy material.
7, according to the shade mask structure of claim 3, it is characterized in that: said sub-frame (12) is a bonding jumper.
8, according to the shade mask structure of claim 5, it is characterized in that: said sub-frame (12) is a bonding jumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106304A CN1056014C (en) | 1996-06-04 | 1996-06-04 | Shadow mask structure for color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106304A CN1056014C (en) | 1996-06-04 | 1996-06-04 | Shadow mask structure for color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167331A CN1167331A (en) | 1997-12-10 |
| CN1056014C true CN1056014C (en) | 2000-08-30 |
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ID=5119053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96106304A Expired - Fee Related CN1056014C (en) | 1996-06-04 | 1996-06-04 | Shadow mask structure for color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056014C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6680563B2 (en) * | 2001-06-27 | 2004-01-20 | Thomson Licensing S.A. | Color picture tube having a low expansion tension mask attached to a higher expansion frame |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605878A (en) * | 1983-05-31 | 1986-08-12 | Sony Corporation | Supporting device for an electron beam landing position selecting mask of a color cathode ray tube |
| EP0278709A2 (en) * | 1987-02-10 | 1988-08-17 | Rca Licensing Corporation | Cathode ray-tube having shadow mask for low overscan |
-
1996
- 1996-06-04 CN CN96106304A patent/CN1056014C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605878A (en) * | 1983-05-31 | 1986-08-12 | Sony Corporation | Supporting device for an electron beam landing position selecting mask of a color cathode ray tube |
| EP0278709A2 (en) * | 1987-02-10 | 1988-08-17 | Rca Licensing Corporation | Cathode ray-tube having shadow mask for low overscan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1167331A (en) | 1997-12-10 |
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