CN1051098A - Plasma display panel and manufacture method thereof - Google Patents
Plasma display panel and manufacture method thereof Download PDFInfo
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- CN1051098A CN1051098A CN90108509A CN90108509A CN1051098A CN 1051098 A CN1051098 A CN 1051098A CN 90108509 A CN90108509 A CN 90108509A CN 90108509 A CN90108509 A CN 90108509A CN 1051098 A CN1051098 A CN 1051098A
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Abstract
A kind of plasma display panel and manufacture method thereof, the porose sheet metal of this display board used thickness 0.01-1.0mm have the insulation course of this porose sheet metal and discharge electrode electric insulation as sept and/or discharge next door.
Description
The present invention relates to make next door and sept (plasma display panel and the manufacture method thereof of ス ペ-サ) with porose sheet metal.
In nearest plasma display panel (hereinafter referred to as PDP), for panel is made platypelloid type, two substrates are set, overlapping with proper spacing, constitute with the peripheral container around the seal glass sealing, enclose gas, this type is main.Fronts in two substrates need glass plate, and another piece backplate is also because for the purpose of inexpensive, so use glass plate of the same race.Therefore, below, such PDP is explained.
In the manufacturing of PDP, before enclosing gas, carry out exhaust earlier, but this moment, the inside and outside pressure differential of peripheral container reaches maximum.Since this pressure differential, two glass basis distortion.Because heating is discharged the gas of absorption in the peripheral container, this distortion becomes bigger, for this distortion is suppressed to the degree that can ignore, must does the thickness of glass plate greatly or panel is done little.If owing between two glass plates sept is set, such restriction does not just exist, thereby in large-scale display board, sept is indispensable.
Usually, in the PDP of a plurality of discharge cells of configuration (セ Le),, in order to ensure suitable discharging gap or prevent string mixed (Network ロ ス ト-Network), need next door or sept to contiguous discharge cell although be the discharge type of AC type or CD type again.
, the configuration of the discharge cell of PDP by its application target decision, for example, has 7 sections 8 words to show, 5 * 7 character shows, 640 * 480 (the Off Le De ッ ト) demonstration etc. of working to the last minute.
The example of such PDP discharge cell configuration is shown in Fig. 1-Fig. 5.Again, in Fig. 1-Fig. 5,1 expression front glass plate, 3 expression next doors, 5 expression back glass plate, 6 expression anodes, 7 expression negative electrodes.As shown in these figures, use the next door of cell orifice or sept (below,, be generically and collectively referred to as the next door) according to occasion with different shape, arrangement.For which kind of configuration of cells, can both use with a kind of method and make the next door, up to the present, tried out several different methods, the method shown in following is for example arranged.
A method: thick film (screen printing multi-sheet printed)
B method: the corrosion processing of photosensitive glass plate
C method: the machining of glass sheet
Wherein, the A method obviously is cheapness, is suitable for mass-produced method, but if then there is the shortcoming that can not obtain abundant discharging gap in overlapping repeatedly printing.Again, when showing PDP for working to the last minute especially, it is important topic that some high precision (for example dot spacing 0.2mm) is at interval changed, and be difficult to correspondence, though the example of realizing with the strip shape with as shown in Figure 2 (Y.Amano:SID Int Symp.Dig.Tech.P160(1982) is arranged with screen printing), as Fig. 1, shown in Figure 4, from around fully surround the next door of discharge cell, being difficult to correspondence especially, needing very high technology, is unpractical.
As mentioned above, from the next door (hereinafter referred to as the complete atresia next door) that surrounds discharge cell on every side fully even and strip have between a direction and contiguous discharge cell the occasion that do not have the next door part (below, be called incomplete locking next door) in, because there is big difference in following meaning.
For example, as utilize the PDP that sends out orange-colored light of neon body discharge, utilize the occasion of the illuminant colour of rare gas self, because this luminous only being limited near the electrode of selecting discharge cell, so on incomplete locking next door, also be practical.But if luminescence unit diminishes at interval, then adjacent unit misplaces easily.In the occasion of considering polychrome or panchromatic PDP,,, thereby make the fluorophor excitation luminescence of adjacent unit sometimes because of incomplete locking next door makes ultraviolet leakage owing to the method for taking by the ultraviolet ray exited light-emitting phosphor of discharge again.That is, string mixes or look permeates unavoidably, and color reproduction and sharpness are hindered, and the result reduces as the value that shows.Because this point, the high meticulous complete atresia next door of A manufactured is inappropriate, corresponding to coloured PDP, is unpractical in order to make it.
The correspondence ratio that the B method is considered to become more meticulous to height is easier to, but owing to extremely special photosensitive glass material, cost an arm and a leg, less economical.Again, assembling thickness is the thin glass plate of 0.1-0.5mm, and glass is crisp thereby practical to be difficult.
For the C method, though general glass can use, the machining of making high meticulous unit interval is difficult, and assembling is difficult too.
Therefore, so far, can become more meticulous corresponding to the height of PDP and can guarantee suitable discharge space, less expensive is suitable for mass-produced next door or sept is found as yet in addition.
The present invention carries out in view of the problem of such prior art, aim to provide a kind of can corresponding to high-finenessization and economy, all remarkable PDP and the manufacture method thereof of a large amount of productivitys.
Above-mentioned purpose of the present invention by porose sheet metal is used as next door or sept, and is provided with insulation course and reaches between this porose sheet metal and electrode.
That is, PDP of the present invention is characterized in that, the porose sheet metal of thickness 0.01-1.0mm as next door or sept, moreover is had the insulation course of the sparking electrode that makes on front panel and/or the backplate and this porose sheet metal electric insulation.
Fig. 1 is to use the example of PDP in the lattice shape next door of X-Y matrix assortment.
Fig. 2 is to use the example of PDP in the strip next door of X-Y matrix assortment.
Fig. 3 is to use the example of PDP in the circular next door of X-Y matrix assortment.
Fig. 4 is to use the example of PDP in the next door of triangle assortment.
Fig. 5 is to use the example of PDP in the next door of 7 sections forms.
Fig. 6 is component parts and the assembly process figure thereof of the DC type PDP of an example of the present invention.
Fig. 7 is component parts and the assembly process figure thereof of the DC type PDP of other example of the present invention.
Fig. 8 is the planimetric map after the PDP assembling.
Fig. 9 is the vertical profile figure of Fig. 8 A-A ' section when dissecing discharge (luminous) unitary space.
Figure 10 is the vertical profile figure of A-A ' section of Fig. 8 when dissecing the next door.
Figure 11 is component parts and the assembly drawing of the DC type PDP of another example of the present invention.
Figure 12 is the structure profile diagram of 1 discharge cell of the PDP of Figure 11.
Figure 13 is member of formation and the assembly drawing of the DC type PDP of another example of the present invention.
Figure 14 is the discharge cell sectional drawing that adds on the anode direction of PDP of Figure 13.
Below in conjunction with accompanying drawing narration embodiments of the invention.
Component parts and assembling process as the DC type PDP of one embodiment of the present of invention are illustrated in Fig. 6.
In the drawings, anode 6 and negative electrode 7 are separately positioned on front glass plate 1 and the back glass plate 5.Again, glass plate 1 and back glass plate are 5 in front, the clathrate next door 4 that configuration is made up of porose sheet metal, moreover, should make anode 6 and negative electrode 7 and clathrate next door 4 electric insulations, insulation course 2 is between front glass plate 1 or back glass plate 5 and grid next door 4.
Again, component parts and assembling process as the DC type PDP of other embodiment of the present invention are illustrated in Fig. 7, planimetric map after the assembling is shown in Fig. 8, and the vertical profile when A-A ' section of Fig. 8 dissects the unitary space is illustrated in Fig. 9, and the vertical profile when A-A ' section of Fig. 8 dissects the next door is illustrated in Figure 10.Fig. 7-Figure 10 reference number is identical with Fig. 6.But dielectric layer on the clathrate next door of being made up of porose metal 4 forms insulation course.Again, the 8th, sept 9 is seal glass.
Among the present invention, forming as the metal material of the porose sheet metal that becomes next door or sept, is the alloy that contains by at least a element of selecting among Fe, Co, Ni, the Cr, preferably coefficient of linear thermal expansion 40-100 * 10
-7/ ℃ (25-500 ℃).The thickness of these sheet metals is 0.01-1.0mm, preferably can use the thickness of 0.05-0.1mm.
, next door or sept are owing to clamped by two glass plates, and so the inner gas of enclosing is with around the seal glass sealing.Therefore, next door (sept), two glass plates, seal glass coefficient of linear thermal expansion separately must be roughly the same or approximate.Because if not this be, seals in the later cooling procedure, and the excessive stresses that is subjected on glass can be until breakage.
Usually, two glass plates are occasions of soft glass, the coefficient of linear thermal expansion of sheet metal preferably 80-100 * 10 that match therewith
-7/ ℃ (25-500 ℃).The metal material that is suitable for it is formed, and can exemplify 42% weight Ni-6% weight Cr-Fe alloy, 50% weight Ni-Fe alloy etc.Glass plate is the occasion of hard glass, the coefficient of linear thermal expansion of sheet metal preferably 40-60 * 10 that match therewith
-7/ ℃ (25-500 ℃).Form as the metal material that is suitable for this, can exemplify 20% weight Ni-17%Co-Fe alloy.Self-evident, when the coefficient of linear thermal expansion of the glass component that uses with above-mentioned not simultaneously, preferably correspondingly select the material in next door therewith.
Form for selected metal material, except that above-mentioned coefficient of linear thermal expansion, also need consider price, processibility and mechanical property, but the thermotolerance in the above-mentioned sealing process is necessary.Usually sealing process is to carry out in 400 ℃-500 ℃, and above-mentioned alloy of giving an example, this temperature can fully be used relatively.Sealing process is easy in air.This occasion, though the resistance to oxidation of metal material becomes problem, above-mentioned alloy of giving an example can fully use.Even to the problematic metal material of resistance to oxidation, non-oxidizable by making sealing air, or form oxide-resistant film by the Treatment of Metal Surface of knowing, also can use.
As the method for the hole pattern of processing on above-mentioned sheet metal that fixed have, can use by pressing machine punching method, laser processing method, electrochemical plating, welding process, etch etc.Not just preferably do not consider processing, machining precision, processing charges etc. adopt best processing method, and are general, preferably adopt etch.
The punching hole of porose sheet metal (
The I cave) shape, assortment are arbitrarily, for example be shown in lattice shape, strip, circle, triangle assortment, 7 sections forms of Fig. 1-Fig. 5 etc., in the present invention, preferably be shown in the high meticulous such shape in complete atresia next door that becomes among Fig. 1, Fig. 4, particularly be shown in the lattice shape of Fig. 1.
, in dot spacing is high meticulous plate less than 0.6mm, because owing to the next door shows invalid increase, so the aperture opening ratio of unit is a problem.In the meticulous plate of height, the next door height adopts 100-200 μ m usually.As described above, this is that the scope that established law just is applicable to the thick film screen printing method is made in real next door.If lower than 100 μ m, the occasion of DC type, it is big that the influence of cathodic sputtering becomes, and again, it is disadvantageous generally will making flash-over characteristic that many unit are all reached even aspect.Higher than 200 μ m, print pass increases, and cost uprises.Next door amplitude to aperture opening ratio influence is that the next door is high more, difficult more do narrow.When considering next door height 100 μ m degree, the next door amplitude (next door towel) of the minimum that the usefulness thick film screen printing can form is about 80 μ m to strip, is about 150 μ m to lattice shape.In using the complete atresia next door of porose sheet metal of the present invention, minimum next door amplitude reaches respectively in thickness 50 μ m degree with above-mentioned corrosion process and to be about 20 μ m, and is about 30 μ m in thickness 100 μ m degree.Therefore, the aperture opening ratio of making comparisons with the square lattice shape of 0.6mm spacing in the complete atresia next door of height 100 μ m is about 56% in the thick film screen printing method, be about 90% in a porose sheet metal, has approximately the former 1.6 times aperture opening ratio.Dot spacing is more little, and it becomes big more.Again, made up, then can be formed bigger aperture opening ratio as porose sheet metal being done thin.
In the present invention, as above-mentioned, the porose sheet metal that is processed into the purpose shape done the next door used, at this moment, on plate and/or the backplate, sparking electrode is set in front, as AC type PDP, electrode is good by the occasion that dielectric covers, and as DC type PDP, the occasion that electrode exposes in discharge space directly is clipped in porose sheet metal (next door) between front panel and the backplate, sealed, then each electrode and porose sheet metal (next door) become short circuit on electric.
That is, the anode of PDP is mutual, negative electrode reaches electric short circuit between anode-cathode each other, becomes the state that can not cause Discharge illuminating.Therefore, in the present invention,, can address the above problem by between porose sheet metal (next door) and sparking electrode, insulation course being set.
This insulation course forms on the electrode of plate and backplate in front, also forms on the surface that can join at the electrode with porose sheet metal (next door), or also can form aspect two at this.Moreover, also can insulation course originally be set on one's body at porose sheet metal.
Cover the method for insulation course, various technology such as gunite, print process, electrostatic spray, infusion process, anodizing, thermal oxidation method, sputtering method, metallikon, electrodeposition process all can be suitable for, consider that preferably expense and performance etc. select, below two kinds of methods better.
That is, first method is an electrodeposition process, and by it, the almost full surface with the dielectric covered metal plate can form insulation course.Electrodeposition process as an electrode, contains porose sheet metal in the electrolytical solution by glass and the dielectric coccoid that contains glass are distributed to, and applies electric field then and reaches.The coccoid diameter is according to desired insulation course and difference is preferably used 0.1-0.5 μ m.As dispersion liquid, enumerate isopropyl alcohol, as electrolyte, enumerate Al
2(NO
3)
3, Ba(NO
3)
2Deng, can from known multiple material, be selected.Heat after the coccoid electro-deposition, melten glass, porose sheet metal almost all sidedly by fine and closely woven insulation course combination (set).Because if the thickness of insulation course is big, then the discharge cell space diminishes, and this is bad.Usually, the thickness of insulation course is the preferably use of 1 to 10 μ m.If insulation course is applied to all surfaces of porose sheet metal, then can obtain the insulation with sparking electrode, have following advantage.Usually if the next door only constitutes with dielectric, then by discharge, conductive materials is by sputter, even cover on the dielectric, because amount is few, interelectrode short circuit will be out of question.But, do the next door as the present invention with porose sheet metal, and if the insulation distance of electrode and porose sheet metal is short, the then corresponding increase of risk of short-circuits.If by above-mentioned electrodeposition process, can with the existing same formation that forms the next door with dielectric, just do not have risk of short-circuits.
Again, second method is to utilize pressure or utilize heat and pressure, insulation course is copied to the method for porose metal sheet surface.This method itself is a known technology, though can use various materials, can enumerate following object.Use to form the mylar of silicon fiml as the rippability matrix, can use the material that acrylic resin is dissolved in excipient (PVC ヒ Network Le) and the glass in the acetate of butyl carbitol equal solvent or contains the common mixing of dielectric coccoid of glass as pressure-sensitive or the quick ink of hot pressing (ィ Application Network).The diameter of coccoid preferably uses 0.1-0.5 μ m.For example the such ink of screen printing forms insulating layer film on the fissility matrix, and is in addition dry.The porose sheet metal of device on this film, making both is normal temperature or heating, pressurization again makes insulation course adhere to as the surfacial pattern of porose sheet metal, peels off matrix, just finishes and duplicates.Duplicating on the single face or two sides that can be applied to porose sheet metal like this.By in the replication status heating, glass is dissolved, insulation course is combined on the porose sheet metal.If this combination touches on the glass basis of display board and applies, then to the next door of glass basis in conjunction with also reaching simultaneously, thereby be easily.
The advantage of above-mentioned replica method is more obvious in the high-precision fine flour plate plate that particularly the next door amplitude is little.If as the side in the next door of first method insulation course also is set, even if this insulation course approaches, also can reduce the area of discharge cell.When only on the surface of porose sheet metal, insulation course being set, if use the method beyond the clone method, for example with screen printing etc., then there is high meticulous graphic printing difficulty, the incidental problem of size offset, promptly enable printing again, because the ink limit of collapsing, then have on the side, next door problems such as ink diffusion.If below the imagination next door amplitude 100 μ m, the high meticulous plate that unit interval 200 μ m are following, those difficulties are accessible.
Moreover, as second method, as the occasion that the metal in next door exposes, there is the possibility of the problem that takes place on the sparking electrode at discharge space.But as everyone knows, in DC type PDP, the voltage landing only is greatly near the utmost point of feminine gender.Therefore, if only insulate near sparking electrode, even have current-carrying part then, discharge electrode also can fully move, and this inventor etc. have been familiar with from experiment.Distinguish that according to experiment the insulation distance of electrode and next door metal is for number μ m, even consider safety, if 10 μ m degree are just no problem.Therefore, be suitable for and realize that the thickness of insulating layer of such distance is effective.
Like this, the thickness of the insulation course that forms on porose sheet metal (dielectric layer) is 1-100 μ m.
On the one hand, if consider to clamp the display board of porose sheet metal with the parallel surfaces that constitutes the complete atresia wall with two glass plates, the then inclosure of discharge gas and have problem to need consideration prior to its exhaust aspect.Particularly, each discharge cell up and down around as the melting of glass, be bonded to the occasion on the glass sheet matrix airtightly, be to have problems.At this moment, in being full of the device of enclosing gas, be necessary to carry out combination, need on device, try every possible means.But if there is the gap of connection each unit on vent port, then common device can be suitable for.The inventor etc. are from experiment, and what recognize is, distinguished between just porose sheet metal in above-mentioned gap and glass sheet, as long as have several μ m,, be the ditch that the gaseous diffusion of 10 μ m degree is used even consider safety, and will there be obstacle when then gas is enclosed.
Such gap, majority are by resulting from the electrode film that forms on the glass sheet with on the panel or the insulating layer film that forms on the porose sheet metal concavo-convex or the concavo-convex of figure that result from, and must form.And, in order to form the ditch that gaseous diffusion is used really, can from following method, select, also they can be made up.The firstth, for example adopt thick film technology to make the method for electrode thickness.The secondth, for the insulation course between electrode and porose sheet metal, adopt the dielectric of strip, make it to have fixed thickness.The 3rd is to be pre-formed ditch on porose metal sheet surface.In order to form ditch, preferably adopt the etch of explanation in hole pattern processing is arranged, if use this method, then can handle when having hole pattern to process.
As above-mentioned second method, adopt the structure profile diagram of the unit of strip dielectric DC type PDP component parts and assembly drawing, its PDP to be shown in Figure 11 and Figure 12 respectively.The reference number of Figure 11-Figure 12 is identical with Fig. 6.But, same on the clathrate next door of forming by porose metal 4 with Fig. 7, covered by dielectric layer, form insulation course.Again, 10 expression strip dielectrics, 11 expression fluorophor.
The dielectric substance that uses in this insulation course can use the material more than select at least a from organism, crystallinity inorganics, glass.In more detail, general general with glass or contain the crystallinity inorganics of glass.
Lift concrete glass and consist of example, should use Pb O-B
2O
3-Si O
2, Pb O-B
2O
3, Zn O-B
2O
3-Si O
2Deng.Preferably 350-1000 ℃ of the softening point of these glass, the glass particle size is 1-5 μ m degree preferably.Glass used herein, in the sealing process of PDP, the glass material of seal glass is warming up to softening melt temperature (sealing temperature), can not dissolve under this temperature again.Usually, glass glass material to seal temperature higher about 50 ℃ than softening point.Again, for the temperature of sealing of PDP, be suitable about 400-450 ℃, therefore, the softening point that is included in the glass in the dielectric substance is preferably in more than 350 ℃.
Again, if consider to form on porose metal sheet surface, the upper limit of softening point is decided by that then metal is indeformable, metal and dielectric not in a large number chemically reactive be condition, its temperature is wished below 1000 ℃.
As the crystallinity inorganics, use aluminium oxide (Al again,
2O
3), forsterite (2Mg O-Si O
2) pottery that waits.Moreover, also can use inorganic pigment (Fe O-Cr
2O
3, Co O-Al
2O
3Deng), the preferably about 1-5 μ of the granularity m of such crystallinity inorganics.
Again, even to organism, as long as final inorganicization of energy can both be used.
In the general panel sealing method (by seal glass sealing), must ability sealing temperature, coefficient of linear thermal expansion, and need with two glass plates, seal glass, next door roughly the same.By such viewpoint, the suitable above-mentioned material of selecting.
Again, porose sheet metal uses so can be used as electrode owing to conduct electricity.This electrode is owing to be electric binding between most unit, and it is disadvantageous using as the selection electrode of display unit.But, in DC type PDP, propose to have the scheme that adopts auxiliary discharge (spy opens clear 54-115060 communique, and the spy holds clear 58-30038 communique and television can magazine, and Vol 40, No.10, P.953,1986).These auxiliary discharges also are effectively because whole unit are produced simultaneously, so can use above-mentioned porose sheet metal as this auxiliary discharge electrode.
In this wise porose sheet metal being shown in Figure 13 as component parts and the assembly drawing of the PDP of auxiliary discharge electrode, and be shown in Figure 14 at the unit sectional drawing that anode direction adds.The reference number of Figure 13-Figure 14 is identical with Fig. 6.But, same on the clathrate next door of forming by porose metal 4 with Fig. 7, covered by dielectric layer, form insulation course.Again, 12 expression third electrode groups (negative electrode), 13 expression second electrode groups (anode) and 14 expression first electrodes (trigger electrode).
At this moment,, need, also may use a plurality of porose sheet metals as Figure 13-shown in Figure 14 as the auxiliary discharge space.For example, two to have a roughly the same porose sheet metal that hole pattern is arranged overlapping in same position, if make auxiliary discharge electrode with one, makes another piece as the next door that forms discharge space, and then auxiliary discharge electrode can form under the situation that does not influence demonstration.If the insulation between these a plurality of porose sheet metals is necessary, can use method same when forming with above-mentioned insulation course.Auxiliary discharge electrode can be that metal exposes state as everyone knows, also can be the state that covers with dielectric layer.Again, also matching with the electrode structure and the shape structure of display board in its position etc., suitably designs.Use a plurality of above-mentioned porose sheet metals, because in subtend type electroplax, can make the design freedom of interelectrode distance big, again, in the design of identical next door height, can use thin sheet metal, thereby trickleer unit interval when having possibility and forming than, if the next door amplitude that identical spacing then can form is littler, thereby the big advantage of aperture opening ratio is arranged.
This is because porose sheet metal is a metal, so even if thin, it is also easy to operate, so possibility has been arranged the first time.Also be effective in this advantage occasion below.
That is, in color PDP, generally, make the fluorophor excitation luminescence by means of this ultraviolet ray by the discharge generation ultraviolet ray.Usually this fluorophor is covered by front glass plate or back glass plate.The fluorophor area that is capped is many more, and glorious degrees is big more.Therefore, the side, next door is that the inner hole surface of porose sheet metal also wishes to cover fluorophor.In the next door with existing dielectric formation, also propose to have the motion (Ban Jing: two, three experiment and application thereof of discharge display element, television can image show the data 13-1(1975 of research association March) and the spy of same design to hold clear 51-38996 communique).Yet, in using the abacus of glass, to unit interval less than 0.6mm, the processing that display area is big is difficult, again, in order to apply (Tu り and to divide the け Ru on board substrate, for example distinguishing with the side, next door of formation such as thick film screen printing) fluorophor of polychrome, must want hi-tech.Porose sheet metal of the present invention can form the high-precision hole pattern that has because its individual processing is easy, and following method can be implemented.
Usually, because fluorophor is a coccoid, the thick film ink can be adjusted.Use this ink, to porose printing fluorophor, directly do like this, ink does not reach the inside in hole, even reach, wants plugging hole yet.Therefore, if blot from the opposite side of the printing surface in hole, then can apply the fluorophor with the ink viscosity respective thickness on the inner face of hole, remaining ink is discharged outside the hole.By this gimmick, also can distinguish the fluorophor of coated polychrome to the hole of porose sheet metal inner face with the unit interval below the 0.3mm.Because next door of the present invention can make the complete atresia type, thus its fluorophor area coverage during than incomplete locking next door also greatly.
The present invention during the next door, unit of using, adopts the next door of being made up of the porose sheet metal different with the existing dielectric that adopts (glass or contain the inorganic material etc. of glass) next door in forming PDP.Therefore, the shape of cell configuration, size, assortment spacing significantly according to the machining precision of sheet metal, and carries out among common AC type that dot matrix shows and the DC type PDP having the precision that can fully satisfy aspect the desired some size and dot spacing in formation.By insulation course is set, can make electrode and porose sheet metal electric insulation on front panel and the backplate again.
As above illustrated, adopt porose sheet metal to do the next door and the PDP of the present invention of insulation course is set, can be corresponding to the meticulous unit interval of height, and have remarkable string to mix characteristic.Again, electric short circuit does not take place in grade yet between anode-cathode.
Describe the present invention in detail below by embodiment.
Embodiment 1
Metal material as the porose sheet metal that becomes the next door is formed, and using coefficient of linear thermal expansion is 92 * 10
-7/ ℃ 42% weight Ni-6% weight Cr-Fe alloy.Plate thickness 0.1mm, the assortment of punching hole makes equidistantly to arrange many foursquare lattice shape in length and breadth, and this spacing is 0.2mm, and the punching hole size makes 0.15 * 0.15mm, by corrosion processing, forms many punching hole, makes porose sheet metal.
As shown in Figure 6, PDP is the nesa coating (ITO) that is provided as anode in front on the glass plate, Ni is set as negative electrode on the glass plate overleaf again.Moreover, on the electrode of glass plate and back glass plate, avoid field of display units in front, form the strip dielectric layer as insulation course with screen printing.
Then, porose sheet metal (next door) is clipped between front panel and backplate, around the seal glass sealing, forms the DC type PDP of X-Y matrix.
Comparative example 1
Be formed on the next door of the DC type PDP shown in the embodiment 1 with thick film screen printing.
At first, make dot spacing 1.0mm, the next door of punching hole size 0.8 * 0.8mm.Form 0.15mm next door height with 8 overlapping printings.
The dot spacing 0.2mm, the punching hole size that make then with the same precision shown in the embodiment 1 are the next door of 0.15 * 0.15mm.In the 1.0mm spacing, the almost negligible delicate collimation deviation or the limit of collapsing of printing paste etc. can not be ignored at this, are manufactured on technical experience difficulties thereby make, and utilization rate of raw materials is compared very different with embodiment 1.Again, though the product to better making, because above-mentioned reason can not obtain sufficient unit aperture opening ratio.If for an example, to the 0.2mm spacing, punching hole is 0.1 * 0.1mm, and aperture opening ratio is 25%.In the foregoing description 1, the punching hole size is 0.15 * 0.15mm, and aperture opening ratio becomes 56%, and obviously, embodiment 1 is favourable.
Comparative example 2
Make the next door of the DC type PDP that is shown in embodiment 1 by the corrosion processing of photosensitive glass plate.But, this material as mentioned above, price is high, and owing to be the glass plate that approaches, is highly brittle, and is also poor than embodiment 1 on the assembling processability.
Comparative example 3
Machining hole on general soda-lime glass etc. makes the next door of the such DC type PDP of comparative example 2, but, in many holes of the high meticulous spacing of making the 0.2mm degree with this method process, to compare with comparative example 2, the dimensional accuracy reduction is more.Again, consider from the fragility of sheet glass, processability, assembling processability aspect, poorer than comparative example 2, thereby more very different than embodiment 1.
Comparative example 4
Insulation course is not set on front glass plate and the back glass plate, porose sheet metal is directly used as the next door separately.Its result has produced or between anode-cathode, has caused electric short circuit, does not light, and inappropriate situations such as non-selected unit is luminous take place in perhaps only anode or the only mutual short circuit of negative electrode sometimes, do not play the effect as the next door of PDP.
The cancellate porose sheet metal that use is adopted in embodiment 1 makes dielectric cover it, makes insulation course.
As dielectric substance, use the ZnO-B of 600 ℃ of softening points, average particulate diameter 2-3 μ m
2O
3-SiO
2P series glass powder and Al
2O
3, FeOCr
2O
3Deng inorganic filler.Dielectric covering is in electrodeposit liquid, and cancellate porose sheet metal is made negative electrode, with its same material, the sheet metal of same degree area makes electro-deposition as anode.Working voltage is 200 volts of constant voltages of direct current.
As a result, electro-deposition state and electro-deposition intensity are all very good.
In atmosphere, use than 600 ℃ of high temperature of softening point of glass powder and burn till this sample, dielectric layer is made fine and closely woven film, obtain the desirable cancellate porose sheet metal that the surface covers with dielectric.
Then, the cancellate porose sheet metal that the surface is covered with dielectric by making like that shown in following is as the DC type PDP in next door.
Promptly, as Fig. 7-shown in Figure 10, the cancellate porose sheet metal that next door 4 adopts the surface to cover with dielectric, the glass that sept 8 adopts than next door 4 thick about 30 μ m, at two front glass plates 1 that are pre-formed electrode and this next door 4 of 5 clampings of back glass plate and sept 8, around seal glass 9 sealings, form the DC type PDP of X-Y matrix.
The sealing condition of this DC type PDP is good, the problems such as breakage that do not have generation to cause owing to stress is irregular.At this moment, sept is positioned at outside the PDP demonstration field, exists the gas of about 30 μ m to import the space in having the demonstration field in next door always, and exhaust and gas inclosure work can all carried out in the demonstration field reliably in the pipe.
Cancellate porose sheet metal that surface used in embodiment 2 is covered by dielectric and strip dielectric are as the DC type PDP such as following the making in next door.
That is, the dielectric of strip adopts optical isolator (Off ォ-ト ィ Application シ ュ レ--) (Tokyo Ohka Kogyo Co., Ltd.'s system), forms thickness 30 μ m, spacing 0.2mm overleaf on the glass plate, forms the dielectric layer of row 50 a μ m.
Then, as Figure 11-shown in Figure 12, the cancellate porose sheet metal 4 of covering dielectric and strip dielectric 10 are clipped in 5 of front glass plate 1 and back glass plate, it as the next door, glass glass material sealing with low melting point, behind chip (チ ッ プ) pipe vacuum exhaust and glass capsulation, the chip pipe is cut off in sealing, makes DC type PDP.As Figure 11-shown in Figure 12, this DC type PDP is provided with anode 6 on the glass plate 1 in front, glass plate 1 inner face in front again, coated fluorophor 11.On the other hand, on the glass plate 5 negative electrode 7 is set overleaf.Then, anode 6 and negative electrode 7 quadratures are so that form matrix.Do like this, obtain forming 100 * 100 the DC type PDP of counting, again, enclose gas He-Xe(2%) 300 torrs.
The DC type PDP that obtains so is superior to the homogeneity of the adaptability of high-finenessization, processability, discharging voltage characteristic.
Shown in following, make following the making of DC type PDP that the cancellate porose sheet metal that is covered by dielectric is used as the next door that use among the embodiment 2, surperficial like that.
That is, as Figure 13-shown in Figure 14, the strip that film A1 is formed 0.2mm spacing, row width of cloth 0.1mm is as the 1st electrode 14, thereon, as dielectric layer 2 a small amount of Al
2O
3Be blended in ZnO-B
2O
3-SiO
2Powder in the P series glass powder and excipient mixing make it to become paste, with stencil printing (ベ ) printing comprehensively, burn till under 580 ℃.Then, on the dielectric layer with the direction of the first electrode orthogonal on, as second electrode 13,, form the 0.2mm spacing with the Ni paste by stencil printing, the strip of row width of cloth 0.1mm burns till under 580 ℃.On second electrode 13 of the intersection point of first electrode 14 and second electrode 12, apply fluorophor again.
As the porose sheet metal electrode of third electrode 12, use and the parent metal identical materials in the next door of forming by porose sheet metal 4, identical shaped sheet metal.Again, this next door 4 is formed by two porose sheet metals.
Then, overleaf on the glass plate 5, the next door 4 that setting is made of the above-mentioned porose sheet metal that obtains like that, moreover, with front glass plate 1 clamping of disposing third electrode 12, with low melting point glass glass material sealing, undertaken after vacuum exhaust and gas encloses by the chip pipe, the chip pipe is cut off in sealing, makes DC type PDP, and, enclose gas and adopt Ne-Ar(0.5%) and 350 torrs.
The DC type PDP that obtains like this, voltage is kept in the anti-sputter of negative electrode, cathode-current density, discharge, processibility (a large amount of productivity) all is good.
Using linear expansion coefficient is 92 * 10
-7/ ℃ 42% weight Ni-6% weight Cr-Fe alloy, as will be as the porose sheet metal in next door.Plate thickness is 75 μ m, and the many foursquare lattice shape of equidistantly arranging with is in length and breadth made in the assortment of punching hole, its spacing is 0.2mm, the punching hole size makes 0.17 * 0.17mm, forms many punching hole by corrosion processing, as porose sheet metal (A type).Again, make same porose sheet metal, thickness of slab 75 μ m, unit interval 0.15mm, punching hole size 0.12 * 0.12mm(B type) prepared two kinds altogether.
As dielectric substance, use 800 ℃ of softening points, the ZnO-B of average particulate diameter 2-3 μ m
2O
3O
2P series glass powder and Al
2O
3, Fe
2O
3Cr
2O
3Deng inorganic filling.Acrylic resin with thermo-compressed is dissolved in the BCA(acetate of butyl carbitol) or the organic solvent of pine tar etc. in, as the copying and printing excipient.This excipient is made up of 50-80 part weight resin and 20-50 part weight solvent.Then for the inorganic thing of filling out of this excipient 5-20 part weight mixing glass powder and 80-95 part weight, as the copying and printing paste.This paste is printed on the mylar of peeling off matrix by stencil printing comprehensively, makes it abundant drying at 90 ℃.By hot cylinder or hot flat pressing machine dry duplicated film is pressed into porose sheet metal.After the pressure, peel off duplicated film, in atmosphere, burn till the porose sheet metal that is formed with dielectric layer with 600-680 ℃, dielectric layer is made complete inanimate matter and fine and closely woven film, obtain insulation course at porose metal sheet surface.
Then, as making like that shown in following the DC type PDP of this porose sheet metal as the next door.That is, as shown in Figure 6, do next door 4, this next door 4 is clipped between the front glass plate 1 and back glass plate 5 these two boards that is pre-formed electrode, around the seal glass sealing, form the DC type PDP of X-Y matrix with porose sheet metal.
The sealing condition of this DC type PDP is good, the problems such as breakage that do not have generation to cause owing to stress is irregular.
Such DC type PDP all obtains good result to the different A type of unit interval, Type B under the situation that does not reduce aperture opening ratio.
Claims (12)
1, a kind of plasma display panel is characterized in that, used thickness is that the porose sheet metal of 0.01-1.0mm is done sept and/or discharge next door, has the insulation course that makes this porose sheet metal and sparking electrode electric insulation.
2, plasma display panel as claimed in claim 1 is characterized in that, the display dot minimum spacing is below the 0.6mm.
3, plasma display panel as claimed in claim 1 or 2 is characterized in that covering insulation course on the described porose sheet metal.
4, the plasma display panel described in arbitrary as claim 1 to 3 is characterized in that, on the described porose sheet metal ditch that gaseous diffusion is used is set.
5, the plasma display panel described in arbitrary as claim 1 to 4 is characterized in that, described porose sheet metal is used as the part of sparking electrode.
6, the plasma display panel described in arbitrary as claim 1 to 5 is characterized in that, uses the described porose sheet metal of polylith.
7, the plasma display panel described in arbitrary as claim 1 to 6 is characterized in that, covers fluorophor on the hole inner face of described porose sheet metal.
8, the plasma display panel described in arbitrary as claim 1 to 7 is characterized in that the material of described porose sheet metal is the alloy that contains at least a element of electing from Fe, Co, Ni, Cr, and coefficient of linear thermal expansion is 40-100 * 10
-7/ ℃ (25-500 ℃).
9, the plasma display panel described in arbitrary as claim 1 to 8 is characterized in that, described insulation course is made up of the glass of 350-1000 ℃ of softening point temperature scope or the dielectric substance that contains glass.
10, a kind of porose sheet metal is characterized in that, it is used as next door or the sept of surface by the plasma display panel of the dielectric layer covering of the thickness 1-100 μ m that becomes insulation course.
11, a kind of manufacture method of plasma display panel, the porose sheet metal of this display board used thickness 0.01-1.0mm is as sept and/or discharge next door, it is characterized in that this porose sheet metal as an electrode, at glass and contain in the dielectric coccoid suspension of glass, this coccoid electro-deposition on porose sheet metal, then, heating dissolves glass, and insulation course is combined on the porose sheet metal.
12, a kind of manufacture method of plasma display panel, it is characterized in that, glass and the dielectric coccoid film forming that contains glass on strippable matrix, under the single face or two sides overlap condition of this dielectric film and porose sheet metal, after room temperature or the heating and pressurizing, by removing the fissility matrix, this dielectric film is copied on the porose metal sheet surface, then, heating dissolves glass, and insulation course is combined on the porose sheet metal.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP269153/89 | 1989-10-18 | ||
| JP26915389 | 1989-10-18 | ||
| JP290027/89 | 1989-11-09 | ||
| JP25981/90 | 1990-02-07 | ||
| JP25981/89 | 1990-02-07 | ||
| JP27193/90 | 1990-02-08 | ||
| JP120048/90 | 1990-05-11 | ||
| JP2120048A JP2532970B2 (en) | 1990-05-11 | 1990-05-11 | Plasma display panel using perforated metal plate as partition wall and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051098A true CN1051098A (en) | 1991-05-01 |
| CN1022712C CN1022712C (en) | 1993-11-10 |
Family
ID=26457691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108509 Expired - Fee Related CN1022712C (en) | 1989-10-18 | 1990-10-17 | Plasma indicating panel and the prodn. therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022712C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311505C (en) * | 2004-04-30 | 2007-04-18 | 东南大学 | A low-capacitance plasma display panel |
| CN101783276B (en) * | 2010-02-03 | 2012-07-18 | 东南大学 | Plasma display board |
-
1990
- 1990-10-17 CN CN 90108509 patent/CN1022712C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311505C (en) * | 2004-04-30 | 2007-04-18 | 东南大学 | A low-capacitance plasma display panel |
| CN101783276B (en) * | 2010-02-03 | 2012-07-18 | 东南大学 | Plasma display board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1022712C (en) | 1993-11-10 |
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