CN1254841C - Method and apparatus for detecting breakage of electrode for plasma planar display device - Google Patents
Method and apparatus for detecting breakage of electrode for plasma planar display device Download PDFInfo
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- CN1254841C CN1254841C CN 02144315 CN02144315A CN1254841C CN 1254841 C CN1254841 C CN 1254841C CN 02144315 CN02144315 CN 02144315 CN 02144315 A CN02144315 A CN 02144315A CN 1254841 C CN1254841 C CN 1254841C
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Abstract
The present invention provides a disconnection detection device for an electrode. The structure of the present invention comprises a glass baseplate, at least one strip-shaped electrode arranged on the glass baseplate, a dielectric layer arranged on the strip-shaped electrode, a supporting structure arranged on the dielectric layer and positioned around the glass baseplate and a gas inlet for leading inert gases into a discharge space, wherein the discharge space is composed of a protective film, the supporting structure and the dielectric layer. The disconnection detection device for an electrode can be placed on a front plate or a back plate to be detected, and whether an electrode is disconnected or not can be detected by observing whether a discharge unit corresponding to the electrode emits light or not.
Description
Technical field
Present invention is directed to a kind of flat plasma display (Plasma display panel, the detection method of electrode defects PDP) and device thereof.And be particularly to the data electrode wire break detection method of keeping electrode (sustain electrodes) and scan electrode (scanelectrodes) and back plate (rear panel) of a kind of flat plasma display (PDP) header board (front panel), and electrode broken thread detector.
Background technology
After flat plasma display (PDP) is a kind of ultraviolet ray excited color phosphor that is produced when utilizing noble gas discharge, convert the large tracts of land screen display of the acceptable visible light of human eye again to.
According to current limliting working method difference, can be divided into once-through type (DC) and two kinds of AC types (AC), product is many based on AC type at present.
AC plasma flat-panel screens (PDP) mainly can be distinguished into three big technologies:
(1) header board FEOL: comprise that transparency electrode manufacturing, auxiliary electrode (bus electrode) make, lure four parts such as electric system is made, the manufacturing of MgO diaphragm.
(2) back plate FEOL: comprise four parts such as data electrode (data electrode) (or claiming addressing electrode, address electrode) manufacturing, barrier rib (rib) manufacturing, fluorophor (phosphor) coating, encapsulating material coating.
(3) back segment packaging technology: comprise after header board and back plate contraposition and temporary transient the fixing, put into vacuum pumping hardware and carry out the exhaust evacuation process, enclose discharge and use mist, be about 670 (hPa) until pressure.Enter aging (aging) technology at last, see through each discharge space stability of photoluminescence of long-time discharge examination.
The mode that scans with regard to flat plasma display (PDP), can be divided into single scanning type (single-scan) and two kinds of two scanning types (dual-scan), wherein two modes that scan are that data electrode is divided into two parts to reach the purpose that drives simultaneously, to promote picture update rate.
At present after the electrode of the header board of finishing flat plasma display (PDP) and back plate is made, the short-circuit test (open-short test) of can opening a way, with the electrode of the header board that detects flat plasma display (PDP) and back plate defectiveness whether, the method for this kind test is for can be divided into contact and contactless two classes.Yet the reliability of the open circuit short-circuit test of contactless device is poor, though the reliability height of the open circuit short-circuit test of contact equipment, but after the follow-up technology of dielectric layer (overcoat), can't use for the two scanning type data electrodes of back plate, therefore, if take place after the open circuit of electrode ties up to the follow-up technology of cover layer, then can't detect.
Summary of the invention
In view of this, the method that the object of the present invention is to provide the electrode of a kind of header board that detects flat plasma display (PDP) and back plate whether to break.
The detection architecture that another object of the present invention is to provide the electrode of a kind of detection flat plasma display (PDP) header board and back plate whether to break.
Another purpose of the present invention is the header board of flat plasma display (PDP) and before afterwards plate carries out the back segment packaging technology, detects the method whether electrode has disconnection defect.
The invention provides a kind of electrode broken thread detector, its structure description is as follows.At least one strip shaped electric poles is set on glass substrate, dielectric layer is set on strip shaped electric poles.And, supporting construction is set on dielectric layer, and is positioned at around the glass substrate.And diaphragm is set on supporting construction, wherein diaphragm, supporting construction and dielectric layer constitute discharge space.In addition, also comprise in order to import the gas access of inert gas to discharge space.
The present invention also provides another kind of electrode broken thread detector, and its structure description is as follows.At least one strip shaped electric poles is set on glass substrate, dielectric layer is set on strip shaped electric poles.And, supporting construction is set on dielectric layer, and is positioned at around the glass substrate.And diaphragm is set on supporting construction, wherein diaphragm, supporting construction and dielectric layer constitute discharge space.In addition, also comprise in order to import the gas access of inert gas to discharge space.In addition, more be included in the dielectric layer surface fluorophor is set.
In addition, the present invention and the method that provides the electrode of a kind of detection flat plasma display (PDP) whether to break, its method is as described below.At first, provide the tested substrate of flat plasma display, formed a plurality of second electrodes on this tested substrate.Afterwards the electrode broken thread detector is positioned on the tested substrate, and strip first electrode that makes the electrode broken thread detector is roughly vertical with second electrode on the tested substrate, wherein this electrode broken thread detector has first discharge space, and corresponding a plurality of discharge cell.Then apply the alternating voltage that has certain frequency respectively to second electrode of tested substrate and strip first electrode of electrode broken thread detector.It is luminous to check afterwards whether each discharge cell corresponding to each second electrode of tested substrate has, if there is the second corresponding electrode of luminous then expression normal, if do not have corresponding second electrode broken string of luminous then expression.
In the method whether electrode of above-mentioned detection flat plasma display (PDP) breaks, tested substrate can be front or rear panel.
In the method whether electrode of above-mentioned detection flat plasma display (PDP) breaks, if tested substrate is header board, the dielectric layer surface of first discharge space of then employed electrode broken thread detector more comprises fluorophor is set.In the case, above-mentioned discharge cell system is arranged in first discharge space.
In the method whether electrode of above-mentioned detection flat plasma display (PDP) breaks, if tested substrate is the back plate, then above-mentioned discharge cell system is arranged in by defined second discharge space of barrier rib.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Fig. 1 is the header board of traditional flat plasma display (PDP) and the schematic diagram of back plate structure.
Fig. 2 is the top view that the present invention is used to detect the electrode the broken thread detector whether electrode of tested substrate break.
Fig. 3 is first kind of electrode broken thread detector of the present invention, and is the profile corresponding to the a-a ' tangent line of Fig. 2.
Fig. 4 is second kind of electrode broken thread detector of the present invention, and is the profile corresponding to the a-a ' tangent line of Fig. 2.
Fig. 5 is the profile of the relative position relation of electrode broken thread detector and tested back plate.
Fig. 6 utilizes first kind of electrode broken thread detector to detect the schematic diagram whether tested data electrode of plate afterwards breaks.
Fig. 7 is the profile of the relative position relation of electrode broken thread detector and tested header board.
Fig. 8 utilizes second kind of electrode broken thread detector to detect the schematic diagram whether electrode and scan electrode break of keeping of tested header board.
Symbol description
Header board: 10
The assembly of header board: glass substrate～12, transparency electrode～14,
Auxiliary electrode～16,
Lure electrics layer (dielectric layer)～18,
MgO protective layer～20, keep electrode～X,
Scan electrode～Y
Back plate: 30
The assembly of back plate: glass substrate～32,
Information electrode (addressing electrode)～34,
Dielectric layer～36, barrier rib～38, fluorophor～40,
Discharge space～42
Electrode broken thread detector: 100
Assembly: glass substrate～102, strip shaped electric poles～104,
Dielectric layer～106, supporting construction～108,
Diaphragm～110, gas access～112,
Discharge space～114, fluorophor～120
Tested back plate: 30 '
Information electrode: D1～Dn, D1 '～Dn '
Tested header board: 10 '
Keep electrode: X1～Xn
Scan electrode: Y1～Yn
Embodiment
Usually flat plasma display (PDP) is to be combined by header board 10 and 30 encapsulation of back plate.
With flat plasma display shown in Figure 1 (PDP) structure is example; header board 10 is by glass substrate 12, transparency electrode 14, auxiliary electrode 16, lures electrics layer (claiming dielectric layer again) 18 and MgO protective layer 20 to be constituted, and wherein transparency electrode 14 and auxiliary electrode 16 are to constitute to keep electrode X and scan electrode Y.30 of back plates are made of glass substrate 32, information electrode (or claiming addressing electrode) 34, dielectric layer 36, barrier rib 38.Wherein barrier rib 38 inboards are coated with the fluorophor 40 of redness (R), green (G) and blue (B) in regular turn, inject gases such as helium, neon respectively and promptly constitute flat plasma display (PDP) after combination.
The technology of the header board of flat plasma display (PDP) comprises in regular turn: the making of the making of the making of transparency electrode 14, auxiliary electrode 16, the making of dielectric layer 18 and protective layer 20.Wherein, high to the required precision of its electrode shape and thickness in making the process of transparency electrode 14, if do not reach the requirement brightness that then will detract.Requiring of 16 pairs of positional precisions of auxiliary electrode is high, otherwise will break easily and the phenomenon of short circuit.In the function that covers one dielectric layer 18 on electrode X and the scan electrode Y of keeping that is made of transparency electrode 14 and auxiliary electrode 16 is that store charge is to reach the memory effect that image is preserved, less demanding to the position precision of dielectric layer 18 in the manufacture process, but the homogeneity of thickness is very important, and the insulating properties will guarantee to discharge the time.
Whether the present invention breaks for the electrode that detects flat plasma display (PDP) header board, be covered in when dielectric layer 18 keep electrode X and scan electrode Y after and before formation diaphragm 20, carry out.Will be as for its detection method in doing detailed description hereinafter.
The technology of the back plate of flat plasma display (PDP) comprises in regular turn: the coating of the making of the making of information electrode 34, dielectric layer 36, the making of barrier rib 38, fluorophor 40 and encapsulating material coating.
Whether the present invention breaks for the electrode that detects flat plasma display (PDP) back plate, is to carry out after coating on the barrier rib 38 when fluorophor 40.Will be as for its detection method in doing detailed description hereinafter.
The electrode broken thread detector
A kind of electrode broken thread detector 100 that below will cooperate Fig. 2, Fig. 3 and Fig. 4 to describe in detail to be used to the electrode of the electrode that detects flat plasma display (PDP) header board and back plate whether to break.Wherein Fig. 2 is the top view of electrode broken thread detector 100.Fig. 3 is respectively two kinds of different electrode broken thread detectors with Fig. 4, and is the a-a ' profile of Fig. 2.
At first will cooperate Fig. 2 and Fig. 3 to describe first kind of electrode broken thread detector in detail.This electrode broken thread detector 100 comprises glass substrate 102, be arranged at strip shaped electric poles 104 on the glass substrate 102, be arranged at dielectric layer 106 on strip shaped electric poles 104 and the glass substrate 102, be arranged on the dielectric layer 106 and be positioned at supporting construction 108, diaphragm 110 and gas access 112 around the glass substrate 102.Wherein diaphragm 110, supporting construction 108 and dielectric layer 106 are to constitute discharge space 114, and gas access 112 is in order to inert gas is directed into discharge space 114.The inert gas that is imported can be helium (He), neon (Ne) or its mixing.
The number of the strip shaped electric poles 104 of above-mentioned electrode broken thread detector 100 is at least one, is to be example with two strip electrodes 104 in the drawings, certainly also configurable electrode 104 more than two.The material of this electrode 104 can be transparent conductive material and cooperates the good metal wire of conductivity, the structure of keeping electrode X and scan electrode Y of its structure example such as flat plasma display (PDP), employed transparent conductive material can be tin indium oxide (ITO) or tin ash (SnO2), and the material of employed metal wire can be chromium-copper chromium compound (Cr/Cu/Cr), silver (Ag), aluminium (Al) or nickel (Ni) etc.In addition, the material of this electrode 104 also can only be made of metal wire.
As for second kind of electrode broken thread detector as shown in Figure 4, itself and first kind of different surface coated one deck fluorophor 120 that are in dielectric layer 106 of electrode broken thread detector (see figure 3).The purpose of this kind electrode broken thread detector is to improve the convenience of identification wire break electrode position.
First kind of electrode broken thread detector (see figure 3) is applicable to whether the data electrode that detects flat plasma display (PDP) back plate breaks.
Second kind of electrode broken thread detector (see figure 4) be applicable to detect flat plasma display (PDP) header board keep electrode and whether scan electrode breaks.But, whether second kind of electrode broken thread detector data electrode of also can be used for detecting flat plasma display (PDP) back plate breaks.
Utilize the electrode broken thread detector to detect plate electrode behind the PDP
Whether the present invention breaks for the data electrode 34 that detects flat plasma display (PDP) back plate 30, be carrying out behind the coating fluorophor 40 on the barrier rib 38, and the first kind of electrode broken thread detector 100 that is used as shown in Figures 2 and 3 detects.The relative position relation of this electrode broken thread detector 100 and tested back plate 30 ' as shown in Figure 5.
In this embodiment, the diaphragm 110 of the electrode broken thread detector 100 that whether data electrode 34 of plate 30 ' breaks after being used for detecting, approximately between 7 and 16, thickness is approximately between 30 microns and 70 microns for its dielectric constant.On barrier rib 38, cover this layer diaphragm 110, a smooth surface can be provided, make inert gas can fill a part circulation in discharge space 114.In addition, this diaphragm 110 also can avoid tested back plate 30 ' that arc light phenomenon (arcing) takes place in discharge process.
By the new discharge space of above diaphragm 110, itself being set up 114 by electrode broken thread detector 100; make the noble gas discharge (discharge) that is full of in the discharge space 114 produce plasma; and the penetrable diaphragm 110 of the ultraviolet light that plasma produced (UV) excites the fluorophor 40 on the plate 30 ' of tested back luminous; if data electrode 34 broken strings of tested back plate 30 ', but then clear view goes out non-luminous discharge cell (cell).
In this example, observe the discharge cell system of whether discharging and be arranged in the discharge space 42 that defines flat plasma display (PDP) by barrier rib 38, and the discharge space 114 of electrode broken thread detector 100 is corresponding many discharge cells.
In order to make this embodiment more understandable, below be example with two scanning type flat plasma displays (PDP), do further explanation.As shown in Figure 6, its data electrode (with Fig. 5 label 34) is divided into two parts, for example D1 shown in, D2, D3, D4, D5 ... Dn, D1 ', D2 ', D3 ', D4 ', D5 ' ... Dn '.Be noted that Fig. 5 and Fig. 6 are schematic diagram, both do not illustrate according to same ratio.
When carrying out the burn out detection of data electrode 34 (being D1～Dn and D1 '～Dn '), the data electrode 34 of tested back plate 30 ' is orthogonal with the electrode 104 of electrode broken thread detector 100.And, the alternating voltage that puts on data electrode D1～Dn and D1 '～Dn ' and electrode 104 is approximately between 150 volts (V) are to 350 volts, frequency approximately between 4kHz (KHz) between the 36kHz, electric current is approximately between 0.02 ampere (A) is to 0.24 ampere.
Tentation data electrode D2 has the defective of broken string, and the discharge cell A between diaphragm 110 and data electrode D2 is then not luminous.When electrode broken thread detector 100 when the direction of arrow moves, can carry out burn out detection to the information electrode D1～Dn and the D1 '～Dn ' (corresponding to the label 34 of Fig. 5) of whole tested back plate 30 '.
Be noted that, when electrode broken thread detector 100 when the direction of arrow moves, diaphragm 110 move in the time of can be different, in the case, the size of diaphragm 110 is much larger than the size of the glass substrate 102 of electrode broken thread detector 100.Because the existence of diaphragm 110 makes when carrying out burn out detection, can not damage tested back plate 30 '.
By above-mentioned detection method, can before carrying out the back segment packaging technology, back plate 30 ' detect the back plate 30 ' that data electrode 34 has broken string.
Utilize the electrode broken thread detector to detect the PDP front plate electrodes
The present invention for detect flat plasma display (PDP) header board 10 keep electrode X and whether scan electrode Y breaks; be to cover dielectric layer 18 backs and before forming MgO diaphragm 20 (see figure 1)s, carry out keeping on electrode X and the scan electrode Y, and be used as Fig. 2 and second kind of electrode broken thread detector 100 shown in Figure 4 and detect.The relative position relation of this electrode broken thread detector 100 and tested header board 10 ' as shown in Figure 7.
In this embodiment; being used to detect on the dielectric layer 106 of the electrode the broken thread detector 100 whether electrode of tested header board 10 ' break is coating one deck fluorophor 120; can increase the brightness when lighting; and the electrode of conveniently recognized broken string; there is layer protecting film 110 below simultaneously, makes the tested header board 10 ' of fluorophor 120 unlikely pollutions that is coated with.In addition, because the existence of diaphragm 110 can be avoided taking place arc light, and can prevent the tested header board 10 ' of supporting construction 108 scratches of electrode broken thread detector 110 in discharge process.
By the new discharge space of above diaphragm 110, itself being set up 114 by electrode broken thread detector 100; make the noble gas discharge (discharge) that is full of in the discharge space 114 produce plasma; and the fluorophor 120 of the ultraviolet light that plasma produced (UV) meeting exciting electrode broken thread detector 100 is luminous; if header board 10 ' keep electrode X or scan electrode Y broken string, but then clear view goes out non-luminous discharge cell (cell).
In this example, observe the discharge space 114 that the discharge cell system of whether discharging is arranged in electrode broken thread detector 100.
In order to make this embodiment more understandable, below more cooperate Fig. 7 to do further explanation.As shown in Figure 8, keep electrode and comprise as shown in the figure X1, X2, X3, X4 ... Xn, scan electrode comprise Y1, Y2, Y3, Y4 as shown in the figure ... Yn.Be noted that Fig. 7 and Fig. 8 are schematic diagram, both do not illustrate according to same ratio.
When keeping the burn out detection of electrode and scan electrode, the electrode 104 of keeping electrode X and scan electrode Y system and electrode broken thread detector 100 of tested header board 10 ' is orthogonal.And, put on keep electrode X1～Xn, scan electrode Y1～Yn and electrode 104 alternating voltage approximately between 150 volts (V) are to 350 volts, frequency is approximately between between the 4kHz to 36kHz.
Suppose to keep the defective that electrode X4 has broken string, then not luminous corresponding to this discharge cell B that keeps electrode X4.When electrode broken thread detector 100 when the direction of arrow moves, can to whole tested header board 10 ' keep electrode X1～Xn and scan electrode Y1～Yn (corresponding to the label 14 and 16 of Fig. 7) carries out burn out detection.
Be noted that, when electrode broken thread detector 100 when the direction of arrow moves, diaphragm 110 move in the time of can be different, in the case, the size of diaphragm 110 is much larger than the size of the glass substrate 102 of electrode broken thread detector 100.
By above-mentioned detection method, can be at header board 10 ' in evaporation MgO diaphragm 20 (see figure 1)s and before carrying out the back segment packaging technology, detect and keep the header board 10 ' that electrode X or scan electrode Y have broken string.
The above-mentioned electrode broken thread detector that utilizes detects flat plasma display (PDP) header board and the detection method whether the back plate electrode breaks, and is not limited to above-mentioned flat plasma display (PDP) structure and technology.The flat plasma display of other type (PDP) structure and technology also all are suitable for,
In sum, the present invention has following advantage or feature at least:
(1) can be before the front and rear panels encapsulation, utilizing the electrode broken thread detector to detect electrode has scarce The front and rear panels that fall into.
(2) the electrode broken thread detector scans with two applicable to detecting single scanning type (Single-Scan) Whether the information electrode of formula (Dual-Scan) is normal.
(3) can clearly know the position of the electrode broken string of front and rear panels.
Although the present invention discloses as above with preferred embodiment, so it is not intended to limiting the invention, appoints What insider without departing from the spirit and scope of the present invention, changes and retouching when doing, therefore Protection scope of the present invention is worked as the accompanying claim of the thing person of defining and is as the criterion.
Claims (15)
1. electrode broken thread detector comprises:
Glass substrate;
At least one strip shaped electric poles is arranged on this glass substrate;
Dielectric layer is arranged on this strip shaped electric poles;
Supporting construction is arranged on this dielectric layer, and is positioned at around this glass substrate;
Diaphragm is arranged on this supporting construction, and this diaphragm, this supporting construction and this dielectric layer constitute discharge space; And
The gas access is in order to import inert gas to this discharge space.
2. electrode broken thread detector as claimed in claim 1, wherein this strip shaped electric poles system is made of the electrically conducting transparent material and the metal material of storehouse.
3. electrode broken thread detector as claimed in claim 2, wherein this electrically conducting transparent material system is selected from the group that is made up of tin indium oxide and tin ash, and this metal material system is selected from the group compound, silver-colored by chromium-copper chromium, that al and ni is formed.
4. electrode broken thread detector as claimed in claim 1, wherein this strip shaped electric poles system is made of metal material.
5. electrode broken thread detector as claimed in claim 1, wherein this indifferent gas system is selected from the group that is made up of helium, neon and its mixing.
6. electrode broken thread detector as claimed in claim 1, wherein the dielectric constant of this diaphragm is between 7 and 16, and thickness is between 30 microns and 70 microns.
7. electrode broken thread detector as claimed in claim 1 more comprises fluorophor, is arranged at this dielectric layer surface.
8. method whether electrode that detects flat plasma display breaks comprises:
The tested substrate of flat plasma display is provided, has formed a plurality of second electrodes on this tested substrate;
Place the electrode broken thread detector on this tested substrate, wherein this electrode broken thread detector comprises:
First glass substrate;
At least one strip first electrode is arranged on this first glass substrate, and this strip first electrode is roughly vertical with those second electrodes on this tested substrate;
First dielectric layer is arranged on this strip first electrode;
Supporting construction is arranged on this first dielectric layer, and is positioned at around this first glass substrate;
First diaphragm is arranged between this supporting construction and this tested substrate, and this first diaphragm, this supporting construction and this first dielectric layer constitute first discharge space; And
The gas access, in order to importing inert gas to this first discharge space,
Wherein this first discharge space of this electrode broken thread detector is corresponding a plurality of discharge cell,
Apply the alternating voltage that has certain frequency respectively to those second electrodes of this tested substrate and this strip first electrode of this electrode broken thread detector; And
It is luminous whether inspection has corresponding to each discharge cell of each second electrode of this tested substrate, if there is this corresponding second electrode of luminous then expression normal, if do not have this corresponding second electrode broken string of luminous then expression.
9. the method whether electrode of detection flat plasma display as claimed in claim 8 breaks, the alternating voltage of this strip first electrode that wherein is applied to those second electrodes of this tested substrate and this electrode broken thread detector is between 150 volts to 350 volts, and frequency is between KHz to 36 KHz.
10. the method whether electrode of detection flat plasma display as claimed in claim 8 breaks, wherein this tested substrate is a header board, it comprises:
Second glass substrate;
Those second electrodes are arranged on this second glass substrate, and wherein those second electrodes comprise a plurality of electrode and a plurality of scan electrodes kept; And
Second dielectric layer is arranged between this first diaphragm of those second electrodes and this electrode broken thread detector.
11. the method whether electrode of detection flat plasma display as claimed in claim 10 breaks, wherein this electrode broken thread detector more comprises first fluorophor, is arranged at this first dielectric layer surface.
12. the method whether electrode of detection flat plasma display as claimed in claim 11 breaks, wherein those discharge cells are arranged in this first discharge space.
13. the method whether electrode of detection flat plasma display as claimed in claim 8 breaks, wherein this tested substrate is the back plate, and it comprises:
Second glass substrate;
Those second electrodes are arranged on this second glass substrate, and wherein those second electrodes are information electrode;
Second dielectric layer is arranged on those second electrodes and this second glass substrate;
Barrier rib is arranged between this first diaphragm of this second dielectric layer and this electrode broken thread detector, in order to define a plurality of second discharge spaces; And
Second fluorophor is arranged at this resistance barrier surface.
14. the method whether electrode of detection flat plasma display as claimed in claim 13 breaks, wherein the dielectric constant of this first diaphragm of this electrode broken thread detector is between 7 and 16, and thickness is between 30 microns and 70 microns.
15. the method whether electrode of detection flat plasma display as claimed in claim 13 breaks, wherein those discharge cells are arranged in those second discharge spaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144315 CN1254841C (en) | 2002-10-09 | 2002-10-09 | Method and apparatus for detecting breakage of electrode for plasma planar display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144315 CN1254841C (en) | 2002-10-09 | 2002-10-09 | Method and apparatus for detecting breakage of electrode for plasma planar display device |
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| Publication Number | Publication Date |
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| CN1489170A CN1489170A (en) | 2004-04-14 |
| CN1254841C true CN1254841C (en) | 2006-05-03 |
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| CN 02144315 Expired - Fee Related CN1254841C (en) | 2002-10-09 | 2002-10-09 | Method and apparatus for detecting breakage of electrode for plasma planar display device |
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