CN101685740B - Method for regenerating PDP display panel and method for separating sealing device - Google Patents
Method for regenerating PDP display panel and method for separating sealing device Download PDFInfo
- Publication number
- CN101685740B CN101685740B CN2008102234677A CN200810223467A CN101685740B CN 101685740 B CN101685740 B CN 101685740B CN 2008102234677 A CN2008102234677 A CN 2008102234677A CN 200810223467 A CN200810223467 A CN 200810223467A CN 101685740 B CN101685740 B CN 101685740B
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- display floater
- sealing
- sealing device
- pdp display
- renovation process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/60—Glass recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
The invention provides a method for regenerating a PDP display panel, which at least comprises the following steps: a) putting a poor display panel after ageing into a nitric acid bath for corrosion; b) shifting the corroded display panel to a warm water bath for heating; and c) putting the display panel from the warm water bath to a hot and cold impact bath, and spraying the display panel with water of different temperatures to separate a front substrate and a back substrate. The invention provides a method for separating a low-melting glass powder sealing device. The method for regenerating the PDP display panel can separate the front substrate and the back substrate of the PDP display panel so as to recover the usable front substrate or back substrate and regenerate the PDP display panel with low cost by matching an intact back substrate or front substrate.
Description
Technical field
The invention belongs to technical field of flat panel display, be specifically related to a kind of separation method of low-melting glass powder sealing device and renovation process of PDP display floater of using.
Background technology
General alternating current gas discharge plasma display floater all adopts the surface discharge type structure at present; It comprises a prebasal plate and the metacoxal plate of sealing with it; Dispose transparency electrode ITO and bus electrode on the prebasal plate, transparency electrode and bus electrode constitute sparking electrode, and sparking electrode comprises keeps sparking electrode and scanning sparking electrode Y; Surface coverage at sparking electrode has one deck dielectric layer, is coated with mgo protection layer on the dielectric layer.Metacoxal plate disposes and the orthogonal addressing electrode of sparking electrode; Cover one deck dielectric layer on the addressing electrode; Dispose strip parallel or lattice coral shape barrier on the dielectric layer with its addressing electrode; And the bottom at barrier is coated with phosphor powder layer, and front-back baseboard is sealed with glass powder with low melting point, and is filled with discharge gas.
In PDP panel manufacture process; From the clean beginning of glass substrate, on prebasal plate, make sparking electrode, front medium layer and mgo protection layer successively, on metacoxal plate, form addressing electrode, back dielectric layer, discharge cell lattice (barrier), phosphor powder layer, sealing-in frame etc. successively; Afterwards with forward and backward substrate contraposition; And adopt and prevent departing from measure, next, carry out sealing-in exhaust behind installation blast pipe and the sealing ring.Wherein, be prone to cause defective in barrier and the electrode manufacturing process, for example subside and short circuit, these defectives can be repaired after inspection.
The process of sealing-in exhaust is: make the fusing of sealing-in material to substrate heating, between the prebasal plate in 130～200um slit and metacoxal plate, form the space of sealing, be connected with the blast pipe sealing; So that blast pipe and vacuum system partly form the space of a sealing, after sealing-in is accomplished, the beginning exhaust; After exhaust is accomplished; In panel, pour quantitative discharge gas and carry out sealed-off, last, carry out ageing.
In the display floater that makes through said process; Generally can produce a large amount of defective productss; Cause the bad main cause of display floater to have: the panel lacerated wound that causes owing to panel ageing reason, for example the panel surface temperature is too high during ageing, can cause the panel surface lacerated wound; The electrode that causes owing to the ageing reason blows; Because the barrier of omission subsides and the bad display floater that causes of electrode broken string is bad; Because the unexpected panel lacerated wound that causes behind the panel ageing.
For the bad panel behind the ageing, have at least a substrate to utilize again, but, can only be that whole screen is discarded owing to do not have rational recovery way at present, cause the PDP manufacturing cost high.
Therefore, be necessary to provide a kind of method that reasonably makes useful substrate regeneration.
Summary of the invention
The object of the present invention is to provide a kind of renovation process of PDP display floater, separate with metacoxal plate with the prebasal plate with defective products behind the ageing, the present invention also provides a kind of separation method that uses low-melting glass powder sealing device.
For reaching this purpose, the invention provides a kind of renovation process of PDP display floater, this method may further comprise the steps at least: a) display floater bad behind the ageing is placed in the nitric acid groove and corrodes; B) display floater after will corroding moves in the warm water tank and heats; C) again display floater is put into the thermal shock groove by said warm water tank, utilize the water of different temperatures to spray, make forward and backward substrate separately.
Preferably, in step a, the concentration of nitric acid is 10%～20% in the above-mentioned nitric acid groove, and temperature is 25～45 ℃, and etching time was at least 30 minutes.
Preferably, in step a, above-mentioned display floater is arranged with protective sleeve outward, to prevent the mutual collision between the display floater.
Preferably, in step c, above-mentioned display floater uses 20 ℃ water spray 10～20 minutes earlier, sprays 10～20 minutes with 70 ℃ water, so that make above-mentioned display floater stand thermal shock and separate again; In step b, the water temperature in the said warm water tank is 50 ℃, and be 10 minutes heating time.
Preferably, the renovation process of PDP display floater of the present invention is further comprising the steps of: d) the sealing-in frame with above-mentioned forward and backward substrate is immersed in corrosion sealing-in frame in the salpeter solution, rinses sealing-in frame place afterwards well; F) reclaim prebasal plate or the metacoxal plate that to utilize again, and be equipped with intact metacoxal plate or prebasal plate carries out sealing-in.
Preferably, in steps d, the concentration of above-mentioned salpeter solution is 13%, and temperature is 35 ℃, and etching time is 10 minutes.
Preferably, above-mentioned nitric acid is replaced by organic acid.
Preferably, above-mentioned organic acid is one or more in glycolic, maleic acid, malic acid and the formic acid.
The present invention uses the separation method of low-melting glass powder sealing device; Above-mentioned sealing device comprises that at least above-mentioned separation method may further comprise the steps by above-mentioned first parts and second parts of glass powder with low melting point sealing-in: above-mentioned sealing device that a) will be to be separated puts into the nitric acid groove or organic acid corrodes; B) the said sealing device after the corrosion after will corroding moves in the warm water tank and heats; C) more above-mentioned sealing device is put into the thermal shock groove by above-mentioned warm water tank, utilize the water of different temperatures to spray, make above-mentioned first parts and second parts separately.
The separation method of above-mentioned use low-melting glass powder sealing device; Above-mentioned sealing device comprises by first parts of glass powder with low melting point sealing-in and second parts at least; Substrate is sent in the high temperature furnace, be heated to glass powder with low melting point fusing after, above-mentioned first parts and second parts separate naturally.
According to the renovation process of PDP display floater of the present invention, can the prebasal plate and the metacoxal plate of PDP display floater be separated, to reclaim available prebasal plate or metacoxal plate, be equipped with intact metacoxal plate or prebasal plate, thereby regenerate the PDP display floater at low cost.The separation way of use low-melting glass powder sealing device of the present invention, this method can be used to use the separation of frit seal device, and this sealing device can be the PDP display floater, also can be other device.
Be noted that above explanation and following detailed description all are exemplary, being intended to provides further explanation to desired the present invention.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.Below in conjunction with specific embodiment other purpose, characteristic and effect of the present invention done further detailed explanation.
Embodiment
How with forward and backward substrate separately the defective products of finding behind the ageing need, be key point of the present invention with forward and backward substrate separately.The invention provides two kinds of methods that forward and backward substrate is separated.
Method one
Badness screen is sent in the high temperature furnace, and blast pipe is put downwards, be warmed to glass powder with low melting point fusing after, forward and backward substrate separates naturally.
Method two
At first the badness screen behind the ageing is placed in the nitric acid groove nitric acid dissolve low-melting glass.The concentration 10%～20% of nitric acid, temperature are 25～45 ℃, and etching time is more than 30 minutes.For preventing that screen from running foul of each other, the outer protective cover that is with of screen.Nitric acid corrosion back moves into screen in the warm water tank heats, and heating is about 10 minutes in 50 ℃ warm water.
Then, be placed in the thermal shock groove, sprayed for tens seconds with about 20 ℃ cold water earlier shielding from warm water tank, to take out; Again with about 70 ℃ 10～20 seconds of warm water spray; Screen is behind thermal shock, and front-back baseboard is separated from sealing surface, is immersed in the sealing-in frame of front-back baseboard respectively in 13% the salpeter solution; Soaked 10 minutes, and can not get in the nitric acid more than the sealing-in frame.The water Steam Heating makes the liquid temperature remain on 35 ℃, rinses sealing-in frame place at last well.
Last front-back baseboard reclaims through handled more separately, prebasal plate after the recovery or metacoxal plate, join with intact metacoxal plate or prebasal plate, reinstall blast pipe and sealing ring, carry out sealing-in exhaust.
Wherein, above-mentioned nitric acid can be replaced by organic acid, for example one or more in glycolic, maleic acid, malic acid and the formic acid.
Those skilled in the art expect easily; Said method can be used for separating such sealing device, promptly uses the device of glass powder with low melting point sealing-in, and such sealing device is through comprising first parts and second parts by the glass powder with low melting point sealing-in; As long as sealing device that will be to be separated is put into the nitric acid groove or organic acid corrodes; Said sealing device after will corroding then moves in the warm water tank and heats, and at last said sealing device is put into the thermal shock groove by said warm water tank, utilizes the water of different temperatures to spray; Can make first parts and said second parts separately, and not destroy the internal structure of first parts and second parts.
The above is merely embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (9)
1. the renovation process of a PDP display floater is characterized in that, may further comprise the steps at least:
A) display floater bad behind the ageing is placed in the nitric acid groove corrodes;
B) display floater after will corroding moves in the warm water tank and heats;
C) again display floater is put into the thermal shock groove by said warm water tank, utilize the water of different temperatures to spray, make forward and backward substrate separately.
2. the renovation process of PDP display floater according to claim 1 is characterized in that,
In step a, the concentration of nitric acid is 10%～20% in the said nitric acid groove, and temperature is 25～45 ℃, and etching time was at least 30 minutes.
3. the renovation process of PDP display floater according to claim 1 is characterized in that,
In step a, said display floater is arranged with protective sleeve outward, to prevent the mutual collision between the display floater.
4. the renovation process of PDP display floater according to claim 1 is characterized in that,
In step c, said display floater uses 20 ℃ water spray 10～20 minutes earlier, sprays 10～20 minutes with 70 ℃ water, so that make said display floater stand thermal shock and separate again;
In step b, the water temperature in the said warm water tank is 50 ℃, and be 10 minutes heating time.
5. the renovation process of PDP display floater according to claim 1 is characterized in that, and is further comprising the steps of:
D) the sealing-in frame with said forward and backward substrate is immersed in corrosion sealing-in frame in the salpeter solution, rinses sealing-in frame place afterwards well;
F) reclaim prebasal plate or the metacoxal plate that to utilize again, and be equipped with intact metacoxal plate or prebasal plate carries out sealing-in.
6. the renovation process of PDP display floater according to claim 5 is characterized in that,
In steps d, the concentration of said salpeter solution is 13%, and temperature is 35 ℃, and etching time is 10 minutes.
7. according to the renovation process of each described PDP display floater in the claim 1 to 6, it is characterized in that,
Said nitric acid is replaced by organic acid.
8. the renovation process of PDP display floater according to claim 7 is characterized in that,
Said organic acid is one or more in glycolic, maleic acid, malic acid and the formic acid.
9. separation method that uses low-melting glass powder sealing device, said sealing device comprises at least that by first parts of glass powder with low melting point sealing-in and second parts it is characterized in that, said separation method may further comprise the steps:
A) sealing device that will be to be separated is put into the nitric acid groove or organic acid corrodes;
B) the said sealing device after will corroding moves in the warm water tank and heats;
C) more said sealing device is put into the thermal shock groove by said warm water tank, utilize the water of different temperatures to spray, make first parts and said second parts separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102234677A CN101685740B (en) | 2008-09-28 | 2008-09-28 | Method for regenerating PDP display panel and method for separating sealing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102234677A CN101685740B (en) | 2008-09-28 | 2008-09-28 | Method for regenerating PDP display panel and method for separating sealing device |
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| Publication Number | Publication Date |
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| CN101685740A CN101685740A (en) | 2010-03-31 |
| CN101685740B true CN101685740B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102234677A Expired - Fee Related CN101685740B (en) | 2008-09-28 | 2008-09-28 | Method for regenerating PDP display panel and method for separating sealing device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522285B (en) * | 2011-12-30 | 2014-08-27 | 四川虹欧显示器件有限公司 | Separating method and device for glass baseplate and soft connecting wire in plasma display screen |
| CN102522289B (en) * | 2011-12-30 | 2014-12-17 | 四川虹欧显示器件有限公司 | Method and device for separating front baseplate and back baseplate of plasma display panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306671A (en) * | 1997-12-29 | 2001-08-01 | 李起元 | Method for removing thermal-hardened frit seal to be used for assembling electronic parts |
| CN1316094A (en) * | 1998-09-09 | 2001-10-03 | 佳能株式会社 | Image display, method for disassembling same, and method for recovering part |
| CN1317817A (en) * | 2000-04-13 | 2001-10-17 | 松下电器产业株式会社 | Regeneration method of glass bulb for CRT |
-
2008
- 2008-09-28 CN CN2008102234677A patent/CN101685740B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306671A (en) * | 1997-12-29 | 2001-08-01 | 李起元 | Method for removing thermal-hardened frit seal to be used for assembling electronic parts |
| CN1316094A (en) * | 1998-09-09 | 2001-10-03 | 佳能株式会社 | Image display, method for disassembling same, and method for recovering part |
| CN1317817A (en) * | 2000-04-13 | 2001-10-17 | 松下电器产业株式会社 | Regeneration method of glass bulb for CRT |
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| CN101685740A (en) | 2010-03-31 |
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