CN1913083A - Surface discharge shadow mask type plasma display panel - Google Patents
Surface discharge shadow mask type plasma display panel Download PDFInfo
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- CN1913083A CN1913083A CNA2006100413298A CN200610041329A CN1913083A CN 1913083 A CN1913083 A CN 1913083A CN A2006100413298 A CNA2006100413298 A CN A2006100413298A CN 200610041329 A CN200610041329 A CN 200610041329A CN 1913083 A CN1913083 A CN 1913083A
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Abstract
This invention discloses a surface-discharged shadow mask plasma display panel including front and back base plates and a conductive shadow mask between and supporting them and containing a lattice hole array, in which, a pair of scan electrode and a sustain electrode at the front base plate, an addressing electrode and the lattice holes of the mask at the back base plate form a discharge unit applying the surface discharge mode, fluorescence powder is not only coated on the inside wall of the shadow mask lattice holes, but also coated at the position of the discharge unit at the back base plate to constitute a fluorescent powder area much larger than that of the shadow mask opposite-type discharge unit to increase the brightness and efficiency of irradiancy.
Description
Technical field
The present invention relates to a kind of plasma display panel, relate in particular to a kind of shadow mask plasma display panel, specifically a kind of surface discharge shadow mask type plasma display panel.
Background technology
The shadow mask plasma display panel that adopts mainly comprises prebasal plate, metacoxal plate and shadow mask at present.Prebasal plate is from glass substrate, is respectively scan electrode, dielectric layer and the protective layer that forms on the dielectric layer surface; Metacoxal plate is respectively the addressing electrode vertical with scan electrode from glass substrate, dielectric layer and the protective layer that forms on dielectric layer; Being clipped in the middle shadow mask of forward and backward substrate is the metal foil web plate that comprises the mesh array that is processed by electric conducting material (for example iron or its alloy).To charge into predetermined working gas after above-mentioned prebasal plate, shadow mask and the metacoxal plate assembling sealing-in, for example various inert gases have promptly formed shadow mask plasma display panel.Shadow mask plasma display panel adopts the operation principle of subtend discharge at present, and its operation principle is as follows: at first, add a high voltage narrow pulse or slope pulsed erase signal between address electrodes of address electrode group and scan electrode, wipe the wall electric charge of discharge accumulation last time; On scan electrode, add a high impulse addressing voltage then and choose this row, on addressing electrode, apply simultaneously the data pulse of this row, the difference of this data pulse voltage amplitude and scanning voltage is higher than the firing voltage between scan electrode and the addressing electrode, control triggers discharge, thereby forms the wall CHARGE DISTRIBUTION corresponding with required display message at this row; After finishing the visual initial discharge of whole screen line by line, between scan electrode group and addressing electrode, apply and keep discharge pulse, to show this frame image.Circulation like this is displayed image frame by frame.For colored shadow mask plasma display panel, the coated inner wall three primary colors fluorescent powder of shadow mask, the vacuum-ultraviolet light that gas discharge produces in each discharge cell excites different fluorescent materials to send corresponding three primary colors light.Yet have following problem in the above-mentioned shadow mask plasma display panel: 1. owing to adopt subtend type discharging structure, discharge space is less, and discharge path is shorter, so discharging efficiency is lower.2. owing to but the area of coating fluorescent powder on the shadow mask hole wall is less, so brightness is lower.3. because region of discharge is far away apart from phosphor powder layer, and the 147nm vacuum-ultraviolet light of discharge generation is big in resonance absorption loss in the fluorescent material radiative process, so brightness and luminous efficiency are lower.
In sum, though existing surface-discharged plasma display plate has luminous efficiency height, advantage that luminosity is high, the barrier structure complex manufacturing technology, the cost height, it is low to make rate of finished products.
Summary of the invention
The objective of the invention is to adopt problem and the surface-discharged plasma display plate barrier cost of manufacture height and the low problem of rate of finished products of subtend type discharge generation, invent a kind of have high brightness, high-luminous-efficiency and low-power consumption, easily manufactured surface discharge shadow mask type plasma display panel at existing shadow mask plasma display panel.
Technical scheme of the present invention is:
A kind of surface discharge shadow mask type plasma display panel, comprise prebasal plate 1, metacoxal plate 2, shadow mask 3, wherein shadow mask 3 is encapsulated in front-back baseboard 1, between 2, described prebasal plate 1 is mainly by preceding substrate glass substrate 4, first electrode pair 5,6, dielectric layer 7, diaphragm 8 are formed, first electrode pair 5 wherein, 6 are parallel on the preceding substrate glass substrate 4, and it can be the electrode that does not have transparent conductive film ITO to constitute, and electrode 5 is called keeps electrode, electrode 6 is called scan electrode, dielectric layer 7 covers on first electrode pair 5,6, and 8 of diaphragms cover on the dielectric layer 7; Described metacoxal plate 2 is mainly by back substrate glass substrate 9, second electrode 10, dielectric layer 11 is formed, wherein second electrode 10 is positioned on the back substrate glass substrate 9, dielectric layer 11 covers on second electrode 10, second electrode 10 is commonly referred to row electrode group or addressing electrode, with first electrode pair 5 on the prebasal plate 1, become the spatial vertical quadrature, it is characterized in that described shadow mask 3 is that a thickness d is the conductive plate that comprises infundibulate grid hole 12 arrays of 0.1~1.0mm, described infundibulate grid hole 12 and prebasal plate 1 relative upper shed 13 areas are 10~20 times of relative under shed 14 areas of itself and metacoxal plate 2, and each infundibulate grid hole 12 upper shed width 15 is 2~4 times of under shed width 16; First electrode pair 5,6 are and are arranged in parallel, corresponding with the two ends of upper shed 13 of infundibulate grid hole 12 on the shadow mask 3 respectively, the under shed 14 of the infundibulate grid hole 12 on second electrode 10 and the shadow mask 3 is corresponding, the under shed width 16 of each grid hole 12 is 1~2 times of second electrode, 10 width 17, upper shed length 19 is 1.5~2 times of under shed length 18, first electrode pair 5,6 electrode width 20 is identical, and upper shed length 19 is 5~20 times of electrode width 20 of first electrode pair 5,6, upper shed length 20 is first electrode pairs 5,1.25~5 times of parallel distance 21 between 6, each grid hole 12 and first electrode pair 5,6 and second electrode 10 intersect vertically.First electrode pair 5 of described shadow mask 3, blanket dielectric layer 7 and protective layer 8; 6 and second electrode 10 that is coated with dielectric layer 11 form the elementary cell of medium blocking type AC creeping discharge types, in the elementary cell of this medium blocking type AC creeping discharge type, be provided with the visible light light-emitting zone.
The upper shed 13 of the infundibulate grid hole 12 on the shadow mask 3 is a kind of in strip, quadrangle, circle, trapezoidal, hexagon or the octagon, and under shed 14 is a strip, and the upper and lower opening center is on the same straight line perpendicular to mask surface.
Light-emitting zone in the elementary cell of medium blocking type AC creeping discharge type is the part on dielectric layer 11 surfaces on the metacoxal plate 2 of the inwall of infundibulate grid hole 12 and corresponding its under shed 14, on this zone, be coated with fluorescent material, and these zones that are coated with fluorescent material have constituted visible light light-emitting zone in the surface discharge type elementary cell of the present invention just.
The fluorescent material 24 that applies at the visible light light-emitting zone of the elementary cell of medium blocking type AC creeping discharge type is monochromatic fluorescent material.
The fluorescent material 24 that applies at the visible light light-emitting zone of the elementary cell of medium blocking type AC creeping discharge type is three primary colors fluorescent powder.
The upper shed 13 of each infundibulate grid hole 12 and the center of under shed 14 on perpendicular to the direction of mask surface on same straight line, upper shed width 15 is 1~4 times of centre-to-centre spacing 17 of upper and lower opening, and the structure of discharge cell and size are promptly by upper shed 13 decisions.
Described shadow mask 3 material therefors are the nonmetallic materials that iron, iron containing alloy, other metal alloys or surface are coated with conductive material membrane.
Beneficial effect of the present invention:
1, be created in the plasma display panel discharge cell of the present invention between first electrode pair 5,6 and produce surface discharge, have the long advantage of discharge path, compare with existing subtend type discharge shadow mask plasma display panel, luminous efficiency improves; Simultaneously fluorescent material is coated in the surface portion of metacoxal plate 2 dielectric layers 11 of the inwall of shadow mask grid hole 12 and under shed 14 correspondences thereof, and coated area increases, and display brightness is improved, and luminous efficiency improves.
2, plasma display panel employing shadow mask of the present invention replaces the barrier in the existing surface-discharged plasma display plate, and it is simple to have manufacture craft, the advantage that cost is low.
Description of drawings
Fig. 1 is the structural representation for display panel of the present invention.
Fig. 2 is electrode of the present invention and shadow mask relative size relation and structural representation.
The encapsulating structure schematic diagram of Fig. 3 display panel of the present invention.
Fig. 4 is the structural representation of the various shadow mask grid holes of the present invention.
Fig. 5 is that discharge cell fluorescent material of the present invention applies schematic diagram.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
Shown in Fig. 1-5
A kind of surface discharge shadow mask type plasma display panel as shown in Figure 1, comprises prebasal plate 1, metacoxal plate 2, shadow mask 3, and wherein shadow mask 3 is positioned between the front-back baseboard 1,2.Described prebasal plate 1 mainly is made up of preceding substrate glass substrate 4, first electrode pair 5,6, dielectric layer 7, diaphragm 8; wherein first electrode pair 5,6 is arranged in parallel; be positioned on the preceding substrate glass substrate 4; only form by Al or Ag electrode; the electrode that does not have transparent conductive film (ITO) to constitute; electrode 5 is called scan electrode, electrode 6 be called keep electrode, dielectric layer 7 covers on first electrode pair 5,6,8 of diaphragms cover on the dielectric layer 7.Described metacoxal plate 2 mainly is made up of back substrate glass substrate 9, second electrode 10, dielectric layer 11, wherein second electrode 10 is positioned on the back substrate glass substrate 9, dielectric layer 11 covers on second electrode 10, second electrode 10 is commonly referred to row electrode group or addressing electrode, with first electrode pair 5 on the prebasal plate 1,6 one-tenth spatial vertical quadratures.
Described shadow mask 3 is one to comprise grid hole 12 and (can be infundibulate, shown in Fig. 3,5) conductive plate of array, its material can be coated with the nonmetallic materials of conductive material membrane for iron, iron containing alloy, other metal alloys or surface, its thickness d is 0.1~1.0mm, described grid hole 12 and prebasal plate 1 relative upper shed 13 areas are 10~20 times of relative under shed 14 areas of itself and metacoxal plate 2, and each grid hole 12 upper shed width 15 is 1~4 times of under shed width 16; The center of upper shed 13 and under shed 14 on perpendicular to the direction of mask surface on same straight line. First electrode pair 5,6 are and are arranged in parallel, corresponding to the surface location in the upper shed 13 of shadow mask 3 grid holes 12, in the scope of second electrode 10 corresponding to the under shed 14 of shadow mask 3 grid holes 12, the under shed width 16 of each grid hole 12 is 1~2 times of second electrode, 10 width 17, upper shed length 19 is 1.5~2 times of under shed length 18, first electrode pair 5,6 electrode width 20 is identical, upper shed length 19 is first electrode pairs 5,5~20 times of 6 electrode width 20, upper shed length 20 is 1.25~5 times of parallel distance 21, each grid hole 12 and first electrode pair 5,6 and second electrode 10 intersects vertically.As shown in Figure 2.
The operation principle of this plasma display panel is as follows: apply positive pulse Va at addressing electrode 10, consistent with the signal of display image, apply negative pulse Vs at scan electrode 6, at first produce discharge at addressing electrode 10 and scan electrode 6, the required wall electric charge of discharge is kept in accumulation, makes this unit be in illuminating state simultaneously, apply the negative pulse Vs that keeps keeping electrode 5, the discharge cell of lighting is at wall electric charge and keeping under the pulse acting in conjunction, and the state that always maintainings lights arrives up to erasing pulse.The erase mode of discharge cell has multiple, and purpose is to eliminate the already present wall electric charge of discharge cell, makes it extinguish state keeping under the impulse action to be transferred to by illuminating state.As adopt burst pulse to wipe, and between twice discharge, apply positive narrow erasing pulse (about about 1 microsecond of pulse duration) at scan electrode 6, the wall electric charge of the discharge generation that it causes and the neutralization of original wall charge generation, thus discharge cell is extinguished.The high-voltage pulse that applies different sequential constitutes different driving methods.Plasma display panel of the present invention can adopt a son driving method of addressing and display separation (ADS), also can adopt Alternate Lighting of Surfaces (ALIS) driving method.For example adopt ADS driving method, in the preparatory stage, three of discharge cell electrodes ( electrode 5,6,10) are zero during beginning.To apply amplitude be V keeping electrode 5
Xw(V
XwFiring voltage V much larger than 5,6 at electrode
Fxy) full frame write pulse, make screen go up all unit and all be in same state, promptly extinguish state, on electrode 10, apply pulse V simultaneously
Aw(V
AwBe about V
Xw/ 2), make addressing electrode 10 not have the accumulation of wall electric charge substantially.Enter address period, electrode 5 making alive V
x Sequential scanning electrode 6, the electrode 6 that does not scan adds-V
Sc, and the electrode 6 of scanning adds-V
yMeanwhile, add addressing pulse V to lighting corresponding electrode 10 with needs
a, what do not need brightness then adds 0V.In the unit that will light, at first discharge between electrode 10 and electrode 6 causes in the discharge of electrode 5 and electrode 6, accumulates the wall electric charge simultaneously.For the unit that need not light, owing to there is not addressing pulse, do not produce discharge, there is not the accumulation of wall electric charge yet.In the phase of keeping, add V at addressing electrode 10
Aw, upper half electrode 5 adds 0V, and electrode 6 adds keeps pulse V
s, lower half electrode 5 adds V
s, electrode 6 adds keeps pulse 0V, under the wall charge effect, keeps discharge and carries out always, and discharge cell is in illuminating state, till needs are wiped.Like this display panel is lined by line scan, finish the demonstration of whole two field picture.Usually a two field picture is divided into the demonstration of plurality of sub field, all there are preparatory stage, address period in each son field and keep the phase, and the time ratio difference of the phase of keeping of each son field, with the realization gradation of image, as adopts 8 son fields, can realize that 256 grades of image gray show.
Embodiment two.
In the foregoing description one, shadow mask grid hole 12 forms the upper shed of arbitrary polygon structures such as strips, quadrangle, circle, trapezoidal, hexagon or octagon, under shed is a strip, and satisfies the upper and lower opening center perpendicular to the condition on the straight line of mask surface.As Fig. 4, this has just constituted second embodiment of the present invention group, and operation principle is with first embodiment.
Embodiment three.
In the foregoing description one, two, monochromatic fluorescent material 24 is coated in the array that the surface portion of metacoxal plate 2 dielectric layers 11 of the inwall of shadow mask grid hole 12 and under shed 14 correspondences thereof constitutes, and fill with suitable working gas, the ultraviolet excitation ultraviolet fluorescence powder that makes it to produce respective wavelength sends monochromatic visible light, thereby realize that image shows, this has just constituted third embodiment of the present invention group, promptly monochromatic surface type shadow mask plasma display panel.
Embodiment four.
In the foregoing description one to four, if the array that constitutes at the surface portion of metacoxal plate 2 dielectric layers 11 of the inwall of shadow mask grid hole 12 and under shed 14 correspondences thereof applies red, green, blue three primary colors ultraviolet excited fluorescence powder 24 successively, and fill with suitable working gas, the ultraviolet excitation ultraviolet fluorescence powder that makes it to produce respective wavelength sends red, green, blue three primary colors visible light, can realize COLOUR IMAGE VISUALIZATION OF HE, this has just constituted the 4th kind of embodiment group, i.e. coloured surface type shadow mask plasma display panel of the present invention.
Present embodiment has only provided the concrete example application of part, but for the patent personnel that are engaged in flat-panel monitor, also can design the various deformation product according to above enlightenment, and this still is considered to be covered by among the present invention.
Claims (8)
1, a kind of surface discharge shadow mask type plasma display panel, comprise prebasal plate (1), metacoxal plate (2), shadow mask (3), wherein shadow mask (3) is encapsulated in front-back baseboard (1,2) between, described prebasal plate (1) is mainly by preceding substrate glass substrate (4), first electrode pair (5,6), dielectric layer (7), diaphragm (8) are formed, first electrode pair (5 wherein, 6) be parallel on the preceding substrate glass substrate (4), dielectric layer (7) covers first electrode pair (5,6) on, diaphragm (8) then covers on the dielectric layer (7); Described metacoxal plate (2) is mainly by back substrate glass substrate (9), second electrode (10), dielectric layer (11) is formed, wherein second electrode (10) is positioned on the back substrate glass substrate (9), dielectric layer (11) covers on second electrode (10), first electrode pair (5 on second electrode (10) and the prebasal plate (1),) one-tenth spatial vertical quadrature, it is characterized in that described shadow mask (3) is that a thickness d is the conductive plate that comprises infundibulate grid hole (12) array of 0.1~1.0mm, described infundibulate grid hole (12) and prebasal plate 1 relative upper shed (13) area is 10~20 times of its under shed (14) area relative with metacoxal plate (2), and each infundibulate grid hole (12) upper shed width (15) is 2~4 times of under shed width (16); First electrode pair (5,6) be and be arranged in parallel, corresponding with the two ends of upper shed (13) of infundibulate grid hole (12) on the shadow mask (3) respectively, the under shed (14) of the infundibulate grid hole (12) on second electrode (10) and the shadow mask (3) is corresponding, the under shed width (16) of each grid hole (12) is 1~2 times of second electrode (10) width (17), upper shed length (19) is 1.5~2 times of under shed length (18), first electrode pair (5,6) electrode width (20) is identical, upper shed length (19) is first electrode pair (5,6) 5~20 times of electrode width (20), upper shed length (20) is first electrode pair (5,6) 1.25~5 times of the parallel distance between (21), described shadow mask (3), first electrode pair (5,6) and second electrode (10) form the elementary cell of medium blocking type AC creeping discharge type, in the elementary cell of this medium blocking type AC creeping discharge type, be provided with the visible light light-emitting zone.
2, surface discharge shadow mask type plasma display panel according to claim 1, a kind of in strip, quadrangle, circle, trapezoidal, hexagon or the octagon of the upper shed (13) that it is characterized in that the infundibulate grid hole (12) on the shadow mask (3), under shed (14) is a strip, and the upper and lower opening center is on the same straight line perpendicular to mask surface.
3, surface discharge shadow mask type plasma display panel according to claim 1, it is characterized in that light-emitting zone in the elementary cell of medium blocking type AC creeping discharge type is the part on dielectric layer (11) surface on the metacoxal plate (2) of the inwall of infundibulate grid hole (12) and corresponding its under shed (14), is coated with fluorescent material on this zone.
4,, it is characterized in that the fluorescent material (24) that the visible light light-emitting zone in the elementary cell of medium blocking type AC creeping discharge type applies is monochromatic fluorescent material according to claim 1 or 3 described surface discharge shadow mask type plasma display panels.
5,, it is characterized in that the fluorescent material (24) that the visible light light-emitting zone in the elementary cell of medium blocking type AC creeping discharge type applies is three primary colors fluorescent powder according to claim 1 or 3 described surface discharge shadow mask type plasma display panels.
6, surface discharge shadow mask type plasma display panel according to claim 1, the upper shed (13) that it is characterized in that each infundibulate grid hole (12) and the center of under shed (14) on perpendicular to the direction of mask surface on same straight line, upper shed width (15) is 1~4 times of centre-to-centre spacing (17) of upper and lower opening, and the structure of discharge cell and size are promptly determined by upper shed (13).
7, surface discharge shadow mask type plasma display panel according to claim 1 is characterized in that first electrode pair (5,6) is made up of Al or Ag electrode, does not establish the transparent conductive film electrode on it.
8, surface discharge shadow mask type plasma display panel according to claim 1 is characterized in that described shadow mask (3) material therefor is the nonmetallic materials that iron, iron containing alloy, other metal alloys or surface are coated with conductive material membrane.
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Cited By (6)
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WO2009092209A1 (en) * | 2008-01-24 | 2009-07-30 | Nanjing Huaxian High Technology Co., Ltd. | Pdp driving method |
WO2009152661A1 (en) * | 2008-06-20 | 2009-12-23 | 南京华显高科有限公司 | A plasma display panel |
WO2010015126A1 (en) * | 2008-08-07 | 2010-02-11 | 南京华显高科有限公司 | Plasma display panel |
CN101162675B (en) * | 2007-11-30 | 2010-04-14 | 南京华显高科有限公司 | Shadow mask type plasma display board with public electric pole leadout |
CN101441968B (en) * | 2008-12-18 | 2010-06-09 | 南京华显高科有限公司 | Plasma display board Shadow mask fluorescent powder ink-jet forming method |
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KR100480705B1 (en) * | 2002-07-03 | 2005-04-06 | 엘지전자 주식회사 | shadow mask for fabricating organic electroluminescence device and fabrication method of the same |
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CN101162675B (en) * | 2007-11-30 | 2010-04-14 | 南京华显高科有限公司 | Shadow mask type plasma display board with public electric pole leadout |
WO2009092209A1 (en) * | 2008-01-24 | 2009-07-30 | Nanjing Huaxian High Technology Co., Ltd. | Pdp driving method |
WO2009152661A1 (en) * | 2008-06-20 | 2009-12-23 | 南京华显高科有限公司 | A plasma display panel |
WO2010015126A1 (en) * | 2008-08-07 | 2010-02-11 | 南京华显高科有限公司 | Plasma display panel |
CN101441968B (en) * | 2008-12-18 | 2010-06-09 | 南京华显高科有限公司 | Plasma display board Shadow mask fluorescent powder ink-jet forming method |
CN101615551B (en) * | 2009-01-13 | 2011-11-02 | 南京华显高科有限公司 | Method for eliminating induced voltage from plasma display |
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