CN85106064A - Produce the method for luminescent screen for colour display tube - Google Patents
Produce the method for luminescent screen for colour display tube Download PDFInfo
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- CN85106064A CN85106064A CN85106064.1A CN85106064A CN85106064A CN 85106064 A CN85106064 A CN 85106064A CN 85106064 A CN85106064 A CN 85106064A CN 85106064 A CN85106064 A CN 85106064A
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- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Openly produce the luminescent screen for colour display tube method at this, it is characterized in that light absorbing material is coated in the screen inner surface, uses a shadow mask.The light absorbing material film surface, is heated with the part of the light absorption material of laser beam irradiation like this and burns by shadow mask scanning and irradiation with laser beam, generates black matrix" thus.Produce and minimizing to generate black matrix" operation number according to this method, and can improve phosphor screen quality and output.
Description
The present invention is relevant method of producing luminescent screen for colour display tube, especially relevant trichromoscope black (light absorption) matrix production method, this black matrix" makes and seldom fault might occurs on phosphor screen, can simplify production process and reduces production costs.
According to being put at present to implement and in Japan Patent publication number 218/1971 disclosed trichromoscope black matrix" production method, light-sensitive material is coated in the television picture tube screen inner surface, expose by a shadow mask, develop and form required image, and the suspended matter of light absorbing material such as graphite is coated in whole surface, then with one by hydrogen peroxide, the corrosive liquid that this class aqueous solution of clorox is formed is handled, the light-sensitive material that swells like this and exposed and handled with etch.Light-sensitive material develops and etch once more then, and strips off with light absorbing material, forms to have the also black matrix" image of unexposed light absorbing material.Generate green, Lan Se and red fluorescence film image with starching method or dusting method at the screen inner surface, a kind of acrylic resin film generates on these color fluorescent film images, a kind of metal backing film generates on the surface thereon with evaporation, screen is toasted, so that remove organic compound, therefore form black matrix" type phosphor screen by fluorescent film image and polypropylene resin film.
Yet according to this a kind of production phosphor screen method, the black matrix" image is to form by tediously long step, and these steps comprise: scrub screen one coating photoresists-by shadow mask expose-manifest-apply absorbing material-etch.Therefore, when ultra fine-pitch tube fluorescent screen that said method is applied to grow up in recent years, the little defective that produces by above-mentioned steps can reduce the phosphor screen quality generally, reduces its output, makes this method be difficult to satisfy and produces needs.
The object of the invention provides a kind of method of producing luminescent screen for colour display tube, this method can be eliminated with the intrinsic problem of above-mentioned traditional handicraft, this method also makes and forms the simplification that becomes of black matrix" operation, and make the fluoroscopic quality and quantity of enhancement become possibility, the result also reduces the number of production process.
Produce the luminescent screen for colour display tube method according to the present invention that can achieve the above object, one light absorbing material is coated in the screen inner surface, one shadow mask is chimeric on it, with the position of regulation as the laser scanning bundle of scanning element, be radiated at the light absorbing material film surface by shadow mask, irradiated part be heated and burn so that generate a kind of black matrix", this matrix by the end by laser radiation to the light absorbing material of part form.
Narrate the present invention in more detail with an embodiment below.
Fig. 1,2,3,4th, the sectional drawing of the main part of panel of color picture tube, and produce each step of luminescent screen for colour display tube method according to embodiment of the invention explanation.At first, show for example 14 " inner surface of type panel of color picture tube is cleaned and is dry as Fig. 1.Show as Fig. 2 then, contain about 4% by weight the suspended matter of graphite and evenly be coated in screen 1 inner surface thickness about 0.5 μ m with spinning solution, the dry then light absorbing material film 2 that forms.Then, show to have the shadow mask 3 of about 90 μ m of aperture size and the about 0.21mm of spacing, place on the opposite face of light absorbing material film 2 as Fig. 3.In each visual generative process of fluorescence membrane, with gadolinium: (Gd: YAG) the lasing light emitter scanning element is arranged on the shadow mask 3 and will settles the light source position of launch point yttrium saw garnet.By Fig. 3 correction plano lens (guide to the light path that meets exposure for the track that makes electron beam when the fluorescence membrane image will form, the widely-used plano lens of proofreading and correct is done effectively to expose) is not shown, shields 1 total inner surface and in air, use scanning under laser beam 4 irradiations.Be heated and burn with the part of the light absorption substance film 2 of laser beam irradiation, form the black matrix" hole 5 of the about 75 μ m of diameter dimension as shown in Figure 4 thus.Laser beam 4 outputs approximately are 200 watts in this case, the about 85 μ m of lasing beam diameter, and sweep speed approximately is 70 meter per seconds, exporting rises and falls is ± 1%.Scanning further repetition under the condition as mentioned above, the lasing light emitter scanning element is guided to blue look launch point light source position, guide to the position of red emission point-source of light then, form black matrix" hole 5 at the color phosphor position place that three kinds of quilts are allocated thus.In this case, light absorption film 6 forms, and it is made up of the light absorbing material film 2 of the remaining part that is not shone by laser beam 4.By green, the fluorescence membrane that Lan Se and red fluorescence particle are formed adopts well-known starching method or coating process to generate in the black matrix" hole of screen 1 inner surface like this, shields the black matrix" image of being made up of light absorption film 6 on 1 inner surface and forms.In addition, as known to, acrylic resin film and deposited metal film form complete luminescent screen for colour display tube thus.
The color picture tube that forms by embodiment of the invention method, with with the invention example though the same structure is arranged wherein the black matrix" image compare with the color picture tube that traditional photosensitive method forms, occur on phosphor screen aspect the fault and the white uniformity, their fine or not level almost is by deciding corresponding to consistent degree between three kinds of color fluorophor black matrix" hole sites and the every kind of color phosphor position.The result is expressed as follows with form:
Table
| The fault number white uniformity on phosphor screen | ||
| Invention is produced and is executed example | 3 7 | |
| Conventional method | 8 8 | |
To obviously find out by last table, according to the present invention, the black matrix" operation is greatly simplified and the operation number also reduces owing to form, still less fault appears in the color picture tube that obtains on phosphor screen, (the white uniformity is with corresponding evaluation color quality for the increase of the white uniformity, its level increases along with the quantitative value minimizing), and improved q﹠r.
The foregoing description disposition is Gd: the YAG laser beam is used for heating and burning light absorption substance film.Yet the present invention will never be limited by above-mentioned situation only, even use carbon dioxide laser beam or any other laser beam, also can put into practice by the same manner.
In addition, to have handled situation be that black matrix" image forms and formed some image diaphragms to the foregoing description.Yet even the present invention also can put into practice in the same manner when generating bar formula black matrix" image.In this case, laser beam has the wide black matrix" of high precision bar with operation scanning of production method of the present invention with acquisition on the gap length direction of shadow mask.
In addition, invention is suitable for a kind of 14 " type color picture tubes in the above-described embodiments.Yet the present invention also can be applicable to any other visual fluorescent imaging pipe certainly.
According to the method for producing the above-mentioned luminescent screen for colour display tube of the present invention of mentioning, use the laser beam warp Cross shadow mask irradiation and form black matrix", simplify thus forming the black matrix" operation and reducing the operation number. Therefore fault quantity occurs seldom in each step, this just might obtain high-quality color picture tube when improving output.
Claims (5)
1, a kind of production method that has black matrix" to be formed on the luminescent screen for colour display tube of screen inner surface is characterized in that, may further comprise the steps: light absorbing material is coated in above-mentioned screen inner surface; One shadow mask is provided; Cross the shadow mask irradiation and scan above-mentioned light absorbing material as scanning element to give allocation with laser beam; The light absorption film that laser beam irradiation is crossed partly heats and burns, and forms black matrix" thus.
2,, it is characterized in that above-mentioned laser beam is a kind of YAG laser beam according to the production fluorescent screen of colour kinescope method of claim 1.
3, according to the production fluorescent screen of colour kinescope method of claim 1, after it is characterized in that above-mentioned black matrix" operation has been finished, comprise that also a step generates fluorescence membrane, it is by being made up of the fluorescent grain of desirable color in above-mentioned black matrix" hole.
4, produce the fluorescent screen of colour kinescope method according to claim 1, it is characterized in that between above-mentioned scanning element and above-mentioned shadow mask, having one to proofread and correct plano lens.
5, produce the fluorescent screen of colour kinescope method according to claim 3, when it is characterized in that forming the fluorescence membrane image, above-mentioned scanning element is positioned at the place that exposure light source should be settled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85106064.1A CN1005800B (en) | 1985-08-08 | 1985-08-08 | Method of producing phophor screen of colour picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85106064.1A CN1005800B (en) | 1985-08-08 | 1985-08-08 | Method of producing phophor screen of colour picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85106064A true CN85106064A (en) | 1987-03-04 |
| CN1005800B CN1005800B (en) | 1989-11-15 |
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ID=4794862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85106064.1A Expired CN1005800B (en) | 1985-08-08 | 1985-08-08 | Method of producing phophor screen of colour picture tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005800B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880848A (en) * | 2015-05-06 | 2015-09-02 | 武汉华星光电技术有限公司 | Color filter and manufacturing method thereof, and liquid crystal display panel |
-
1985
- 1985-08-08 CN CN85106064.1A patent/CN1005800B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880848A (en) * | 2015-05-06 | 2015-09-02 | 武汉华星光电技术有限公司 | Color filter and manufacturing method thereof, and liquid crystal display panel |
| US10133115B2 (en) | 2015-05-06 | 2018-11-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Color filter and manufacturing method thereof, liquid crystal display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1005800B (en) | 1989-11-15 |
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