CN1023852C - Manufacturing method for phosphor screen of color cathode ray tube - Google Patents
Manufacturing method for phosphor screen of color cathode ray tube Download PDFInfo
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- CN1023852C CN1023852C CN 89108860 CN89108860A CN1023852C CN 1023852 C CN1023852 C CN 1023852C CN 89108860 CN89108860 CN 89108860 CN 89108860 A CN89108860 A CN 89108860A CN 1023852 C CN1023852 C CN 1023852C
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- panel
- ray tube
- manufacturing
- cathode ray
- color cathode
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- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
The present invention relates to a manufacturing method of a fluoroscopic screen of a color cathode ray tube, which comprises the following working procedures: the coating process of fluorescent powder suspension liquid, the recovering process of the superfluous fluorescent powder suspension liquid, the cleaning process of the seal part of a panel, the exposing process of a fluorescent layer and the developing process of the fluorescent layer. The manufacturing method of a fluoroscopic screen of a color cathode ray tube is characterized in that the working procedures of the recovering process of the superfluous fluorescent powder suspension liquid and the cleaning process of the seal part of the panel are added between the working procedures of the coating process of the fluorescent powder suspension liquid and the drying process of the fluorescent layer according to a sequence. The manufacturing method of a fluoroscopic screen of a color cathode ray tube enhances the accuracy of exposing operation and reduces the number of manufacturing procedures. Therefore, the manufacturing method of a fluoroscopic screen of a color cathode ray tube saves the appliance cost of the corresponding working procedures and enhances production rate.
Description
The present invention relates to the manufacture method of color cathode ray tube fluorescent screen.
Fig. 1 illustrates the fluoroscopic general manufacture method that forms in a flowchart on the inner surface of colour cathode ray tube, will describe this method in detail below.
At first, carry out phosphor powder suspension as follows and apply operation, promptly, in with suitable speed rotating panel, the phosphor powder suspension of right quantity is injected on the inner surface of described panel, so that phosphor suspension is distributed on the total inner surface of panel, the panel fluorescent layer stands baking operation for the first time, then, use the skirtboard of ultrasonic waves for cleaning panel.
After this, carry out superfluous phosphor powder suspension recycling step as follows, that is, make the panel high speed rotating, so that reclaim described superfluous suspension, then, this fluorescent layer stands baking operation for the second time.
After this, carry out the matting of hermetic unit as follows, that is, the leading edge that is connected on the glass awl of the skirtboard of extension-this panel of this panel is cleaned, stick to phosphor powder and other useless materials on this leading edge with removing.
After this, carry out exposure process as follows, that is, on the inner surface of panel, form the phosphor dot that is arranged in the pattern that requires by exposure device, and, after the exposure, immediately this fluorescent layer is cleaned and develop.
Because, necessary coated red, green and three kinds of phosphor powders of blue look respectively, so, the above-mentioned operation of triplicate.
In this traditional fluorescent screen manufacturing process, the cleaning of described hermetic unit is carried out after twice baking step.When carrying out the cleaning of hermetic unit, the fluorescent on the panel inner surface is in the state of oven dry fully, and therefore, it is not thorough that the cleaning of sealing part may be carried out.In addition, flushing liquor can splash on the fluorescent layer of the oven dry fully that forms on the panel inner surface, thereby generation may damage the danger of fluorescent layer.
Therefore, the purpose of this invention is to provide a kind of method of making the fluorescent screen of color cathode ray tube, wherein, reduced percent defective, and, the labour of production process saved.
To achieve these goals, the manufacturing color cathode according to the present invention method of penetrating the pipe fluorescent screen comprises: the operation that applies phosphor powder suspension; Reclaim the operation of superfluous phosphor powder suspension; Clean the operation of the hermetic unit of panel; The exposure process of fluorescent layer; And the developing procedure of fluorescent layer.
Described method has following feature: between the operation of operation that applies phosphor powder suspension and oven dry fluorescent layer, reclaim the operation of superfluous phosphor powder suspension and the operation of cleaning the hermetic unit of panel according to described order.
By describing most preferred embodiment of the present invention with reference to the accompanying drawings in detail, can make above-mentioned purpose of the present invention and other advantages become clearer, in each accompanying drawing:
Fig. 1 is the flow chart of the classical production process of color cathode ray tube fluorescent screen; And
Fig. 2 is according to flow chart of the present invention, that make the method for color cathode ray tube fluorescent screen.
Carry out first operation of described manufacture method as follows, that is, the inner surface that makes panel with the posture that tilts up, utilize drive unit to make this panel low speed rotation, simultaneously, spray an amount of phosphor powder suspension from the top.After the injection of finishing phosphor powder suspension, allow this panel high speed rotating immediately, so that make the phosphor powder suspension distribution on the total inner surface of panel.
Carry out second operation as follows, that is, the phosphor powder suspension recovery device of transferring to known type through the panel of first operation, then, remaining superfluous suspension makes this panel high speed rotating, so that can be recovered owing to centrifugal force after being distributed on the panel.
Carry out the 3rd operation as follows, that is, remove foreign substance, especially phosphor powder defective material or the like on the hermetic unit that in above-mentioned each operation, sticks to panel with common cleaning device.
Carry out the 4th operation as follows, that is, and by radiations heat energy and blowing hot-air and the fluorescent layer oven dry that on panel inner surface, forms.
Then, carry out finishing operation, that is, the fluorescent layer of counter plate carries out the common operation such as exposure and development.
For red, green and three kinds of phosphor powders of blue look, repeat above-mentioned series of processes respectively.
According to manufacture method of the present invention, different with the situation of commonsense method, before baking operation, carry out the matting of hermetic unit, therefore, can expect to improve the cleaning quality of panel.That is, different with the situation of commonsense method, the hermetic unit of cleaning panel makes the cleaning of counter plate become than being easier to before phosphor powder solidifies.This brings following result: avoid staiing the workbench of exposure device, in the exposure process, this workbench is with the hermetic unit of touch panel.In addition, panel remains the tight state of contact of workbench with exposure device, therefore, has improved the precision of exposing operation.
As by what relatively can see Fig. 1 and Fig. 2 work, the operation of manufacture method of the present invention quantitatively is less than the operation of commonsense method, therefore, has also saved the equipment cost of corresponding operation, and, improved productivity ratio.
Claims (1)
1, a kind ofly make the method that the extreme ray tube fluorescent screen falls in colour, it comprises following operation:
Apply phosphor suspension, reclaim superfluous phosphor suspension, oven dry fluorescent material supernatant liquid, the hermetic unit of cleaning panel, the exposure of fluorescence coating, and the development of fluorescence coating,
It is characterized in that this method is by carrying out with order:
In the operation that applies phosphor suspension, reclaim the operation of superfluous fluorescent material supernatant liquid, the operation of cleaning the hermetic unit of said panel is dried the operation of said phosphor suspension, operation with the exposure of the phosphor suspension of said oven dry, and the outstanding powder liquid of the fluorescent material of said exposure developed and the operation of flushing, the operation that therefore will reclaim the operation of said superfluous phosphor suspension and clean said sealing portion of panel is interted in the operation of the said phosphor suspension of coating and is dried between the operation of said fluorescence coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108860 CN1023852C (en) | 1989-11-25 | 1989-11-25 | Manufacturing method for phosphor screen of color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108860 CN1023852C (en) | 1989-11-25 | 1989-11-25 | Manufacturing method for phosphor screen of color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1052216A CN1052216A (en) | 1991-06-12 |
| CN1023852C true CN1023852C (en) | 1994-02-16 |
Family
ID=4857775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108860 Expired - Fee Related CN1023852C (en) | 1989-11-25 | 1989-11-25 | Manufacturing method for phosphor screen of color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023852C (en) |
-
1989
- 1989-11-25 CN CN 89108860 patent/CN1023852C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1052216A (en) | 1991-06-12 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |