CN1691261A

CN1691261A - Plasma display panel

Info

Publication number: CN1691261A
Application number: CNA2005100783286A
Authority: CN
Inventors: 徐承范; 李源周; 权升旭; 禹锡均; 姜景斗
Original assignee: Samsung SDI Co Ltd
Current assignee: Samsung SDI Co Ltd
Priority date: 2004-04-09
Filing date: 2005-04-09
Publication date: 2005-11-02
Anticipated expiration: 2025-04-09
Also published as: CN100555525C; KR20050099243A; KR100647601B1

Abstract

A plasma display panel (PDP) having improved luminous efficiency may be constructed with an upper substrate, a lower substrate disposed parallel to the upper substrate, and a plurality of upper barrier ribs formed of a dielectric disposed between the upper substrate and the lower substrate. The upper barrier ribs, together with the upper substrate and the lower substrate, define discharge cells. A plurality of upper discharge electrodes are disposed to surround the discharge cell are embedded in the upper barrier ribs. A plurality of lower discharge electrodes that are spaced-apart from the upper discharge electrodes are embedded in the upper barrier ribs to surround the discharge cell. A plurality of lower barrier ribs are disposed between the upper barrier ribs and the lower substrate. A plurality of central barrier ribs may be positioned inside the discharge cells, a plurality of fluorescent layers are formed between side surfaces of the lower barrier ribs and side surfaces of the central barrier ribs, and a discharge gas is used to fill the discharge cells.

Description

Plasma display panel

Priority request

The application's request is all being that " plasma display panel ", application number are that the korean patent application of 10-2004-0024483,10-2004-0030930 and 10-2004-0030931 is as its priority, at this with its content in the lump as a reference on April 9th, 2004, on May 3rd, 2004, on May 3rd, 2004 in the title of Korean Patent office application.

Technical field

The present invention relates to a kind of plasma display panel (PDP), specifically, relate to and have the plasma display panel that has improved luminous efficiency.

Background technology

Being similar in Japanese patent application publication No. is disclosed plasma display panel (PDP) in the 1998-172442 document; comprise: following substrate; be set parallel to each other the addressing electrode on following substrate top surface; cover the following dielectric layer of this addressing electrode; be formed on down the barrier on the dielectric layer; be formed on down on the dielectric layer upper surface and the fluorescence coating on the barrier sidewall; the last substrate that be arranged in parallel with following substrate; be arranged on the substrate lower surface to keep sparking electrode right; the right upper dielectric layer of sparking electrode is kept in covering, and the protective layer that covers upper dielectric layer.Keep sparking electrode to comprising X electrode and Y electrode, and the X electrode comprises bus electrode and transparency electrode, the Y electrode comprises bus electrode and transparency electrode.

In this PDP, keep sparking electrode to determining pixel one time with two adjacent barriers with one.By the address discharge between addressing electrode and Y electrode, select and be used for luminous inferior pixel, and by between the X of selected pixel electrode and Y electrode, keeping discharge, and make time pixel luminous.More specifically, keeping interdischarge interval, the discharge gas that is filled in this time pixel is launched ultraviolet ray, and this ultraviolet ray excited fluorescence coating is launched visible light.The light of being launched by fluorescence coating demonstrates image on PDP.

In order to strengthen the light emission effciency of PDP, must enough can excite discharge gas greatly thereby be used to produce the space of keeping discharge, the surface area of fluorescence coating must be wide, and hinder fluorescence coating and launch the structure of visible light and must minimize.

Yet; in this PDP; the space that is used to produce discharge is very little; because keeping discharge only takes place in the space between X electrode that is close in protective layer and Y electrode; and the surface area of fluorescence coating neither be wide especially; and it only is by 60% of bright dipping that fluorescence coating is launched that the visible light that sees through last substrate approximately reduces to, because protective layer, upper dielectric layer, transparency electrode and bus electrode can absorb the visible light of being launched by fluorescent layer and reflect.

In order to increase the surface area of fluorescence coating, as shown in Figure 2, in inferior pixel, be formed with central barrier, and also can on the side surface of this central authorities' barrier, be formed with fluorescence coating.Yet we find that this structure is not what expect, because central barrier can hinder the discharge of keeping between X electrode and the Y electrode.

Summary of the invention

Thereby, an object of the present invention is to provide a kind of plasma display panel that improves the light emission effciency.

According to an aspect of the present invention, a kind of plasma display panel (PDP) can comprise: go up substrate; Following substrate, itself and last substrate be arranged in parallel; A plurality of barriers of going up are made of the dielectric material layer that is arranged between substrate and the following substrate, and last barrier is determined discharge cell with last substrate and following substrate; A plurality of sparking electrodes of going up are arranged in the barrier to surround discharge cell; A plurality of sparking electrodes down, it separates with last sparking electrode and is arranged in the barrier to surround discharge cell; A plurality of barriers down are arranged between barrier and the following substrate; A plurality of central barriers are arranged in the discharge cell; A plurality of fluorescence coatings are formed on down between barrier side surface and the central barrier side surface; With the discharge gas that is filled in the discharge cell.

According to a further aspect of the invention, PDP can comprise: go up substrate; Following substrate, itself and last substrate be arranged in parallel; A plurality of barriers of going up are made of the dielectric substance that is arranged between substrate and the following substrate, and last barrier is determined discharge cell with last substrate and following substrate; A plurality of sparking electrodes of going up are arranged in the barrier to surround discharge cell; A plurality of sparking electrodes down, it separates with last sparking electrode and is arranged in the barrier to surround discharge cell; A plurality of barriers down are arranged between barrier and the following substrate; Fluorescence coating is formed with thereon and a plurality ofly is used to increase surface area and is arranged on projection in the discharge cell; With the discharge gas that is filled in the discharge cell.

According to a further aspect of the invention, provide the PDP that has improved the light emission effciency.

And, on the other hand, providing a kind of PDP, it is easy to discharge foreign gas and is easy to fill discharge gas.

On the other hand, also provide a kind of by reducing the PDP that addressing voltage has improved the light emission effciency.

Description of drawings

By to the detailed description of embodiment, showing above-mentioned and other features and advantage of the present invention with reference to the accompanying drawings, wherein:

Fig. 1 is the exploded perspective view after plasma display panel (PDP) cuts a part;

Fig. 2 is along the formed cross-sectional view of Fig. 1 section line II-II, to show the layout of central barrier;

Fig. 3 be first embodiment of the invention PDP cut exploded perspective view after the part;

Fig. 4 A is along the formed partial cross section view of Fig. 3 section line IV-IV;

Fig. 4 B is the more detailed figure that extracts out from the cross-sectional view of Fig. 4 A;

Fig. 5 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 3;

Fig. 6 is the cross-sectional view of first improvement project of first embodiment;

Fig. 7 is the local oblique view that is illustrated in the electrode structure in first improvement project of first embodiment;

Fig. 8 is the cross-sectional view of second improvement project of first embodiment;

Fig. 9 is the local oblique view that is illustrated in the electrode structure in second improvement project of first embodiment;

Figure 10 is the exploded perspective view after the part of cutting according to the PDP of second embodiment of the invention;

Figure 11 is along the formed partial cross section view of Figure 10 section line XI-XI;

Figure 12 is the exploded perspective view after the part of cutting according to the PDP of third embodiment of the invention;

Figure 13 is along the formed partial cross section view of Figure 12 section line XIII-XIII;

Figure 14 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 12;

Figure 15 is the exploded perspective view after the part of cutting according to the PDP of the improvement project of third embodiment of the invention;

Figure 16 A is along the formed partial cross section view of Figure 15 section line XVI-XVI;

Figure 16 B is the more detailed figure that extracts out from the cross-sectional view of Figure 16 A;

Figure 17 is the exploded perspective view after the part of cutting according to the PDP of fourth embodiment of the invention;

Figure 18 is along the formed partial cross section view of Figure 17 section line XVIII-XVIII;

Figure 19 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 17;

Figure 20 is the exploded perspective view after the part of cutting according to the PDP of fifth embodiment of the invention;

Figure 21 is along the formed partial cross section view of Figure 20 section line XXI-XXI;

Figure 22 is the exploded perspective view after the part of cutting according to the PDP of sixth embodiment of the invention;

Figure 23 is along the formed partial cross section view of Figure 22 section line XXIII-XXIII;

Embodiment

Fig. 1 is the exploded perspective view after plasma display panel (PDP) cuts a part; Fig. 2 is along the formed cross-sectional view of Fig. 1 section line II-II.

With reference to figure 1; PDP100 comprises: following substrate 121; be set parallel to each other the addressing electrode 122 on following substrate 121 upper surface 121a; cover the following dielectric layer 123 of this addressing electrode 122; be formed on down the barrier 124 on the dielectric layer 123; be formed on down on dielectric layer 123 upper surfaces and barrier 124 sidewalls 128 on fluorescence coating 125; the last substrate 111 that be arranged in parallel with following substrate 121; be arranged on and keep sparking electrode to 114 on substrate 111 lower surfaces; covering is kept sparking electrode to 114 upper dielectric layer 115, and the protective layer 116 that covers upper dielectric layer 115.Keeps sparking electrode and comprise X electrode 112 and Y electrode 113, and X electrode 112 comprises bus electrode 112a and transparency electrode 112b that Y electrode 113 comprises bus electrode 113a and transparency electrode 113b to 114.

In this PDP, keep sparking electrode with one 114 and two adjacent barriers 124 are determined pixel one time.By the address discharge between addressing electrode 122 and Y electrode 113, select and be used for luminous inferior pixel, and by between the X of selected pixel electrode 112 and Y electrode 113, keeping discharge, and make time pixel luminous.In particular, keeping interdischarge interval, the discharge gas that is filled in this time pixel is launched ultraviolet ray, and this ultraviolet ray excited fluorescence coating 125 is launched visible light.The light of being launched by fluorescence coating 125 demonstrates image on PDP100.

Yet; in this PDP100; the space that is used to produce discharge is very little; because keeping discharge only takes place in the space between X electrode 112 that is close in protective layer 116 and Y electrode 113; and the surface area of corresponding fluorescence coating 125 neither be wide especially; and the visible light that sees through last substrate 111 approximately is by 60% of bright dipping that fluorescence coating is launched, and this is because protective layer 116, upper dielectric layer 115,

transparency electrode

112b, 113b and

bus electrode

112a, 113a can absorb and reflect the visible light of being launched by fluorescence coating 125.

As shown in Figure 2,, in inferior pixel, be formed with central barrier 126, and also can on the side surface 128 of this central authorities' barrier 126, form fluorescence coating 125 in order to increase the surface area of fluorescence coating 125.Yet we find that this structure is not what wish, keep discharge because central barrier 126 can hinder between X electrodes 112 and the Y electrode 113 by what curved arrow was represented.

By with reference to the accompanying drawing of having expressed the embodiment of the invention therein, the present invention is more intactly described.

Be described referring to figs. 3 to 5 couples first embodiment.

Fig. 3 be first embodiment of the invention PDP cut exploded perspective view after the part; Fig. 4 is along the formed partial cross section view of Fig. 3 section line IV-IV; Fig. 5 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 3.

PDP200 according to first embodiment comprises: go up substrate 211; Following substrate 221, its be positioned at parallel plane plane, last substrate place on; A plurality of barriers 215 of going up extend downwards from the lower surface of last substrate 211; Embed the last sparking electrode 213 and the following sparking electrode 212 of barrier 215 on each; A plurality of barriers 224 down, the last barrier 215 from following substrate 221 towards correspondence extends upward; Central authorities' barrier 227, with adjacent following barrier 224 at interval and be arranged on central authorities; Fluorescence coating 225; And discharge gas, it is filled in the space between substrate 211 lower surface 211a and the fluorescence coating 225.Following barrier 224 aligns with last barrier 215, determines the inner space of each discharge cell 226.

To descend substrate 221 be arranged on parallel plane plane, last substrate 211 places on, and down substrate 221 and last substrate 211 all are that transparent material by for example glass constitutes.As illustrated in fig. 1 and 2 keep sparking electrode to 114 be used to cover this as illustrated in fig. 1 and 2 and keep sparking electrode 114 upper dielectric layer 115 is not set at the last substrate 211 lower surface 211a that limit discharge cell 226.Thereby the visible light above 80% that fluorescence coating 225 is launched can see through last substrate 211, will be described this thereafter.

Form barrier 215 on last substrate 211 lower surface 211a, barrier 215 is made of dielectric on this, and determines discharge cell 226 with last substrate 211 and following substrate 221.In Fig. 5, arrange discharge cell 226 with matrix shape, but the present invention is not limited thereto, also discharge cell 226 can be arranged in pyramid.And in Fig. 3, the cross section of discharge cell 226 is rectangles, but the present invention is not limited thereto, and its cross section can be for example triangle or pentagonal polygon, or circular, or oval.In a particular embodiment, discharge cell 226 can have irregular and different shape of cross sections.

Last barrier 215 can be made of dielectric, this dielectric can prevent to be short-circuited between the sparking electrode 213 and following sparking electrode 212 on adjacent one another are, also can prevent when keeping sparking

electrode

212 and 213 and keep sparking

electrode

212 and 213 during the charged particle collision and be damaged.This dielectric can be PbO, B ₂O ₃, or SiO ₂

With reference to figure 3 and Fig. 4, can cover by protective layer 216 and go up barrier 215 again.Can form this protective layer 216 by deposit MgO layer.When this protective layer 216 of deposit, this protective layer 216 can be deposited on barrier 215 lower surface 215c ' and go up (referring to Fig. 4 A, B) and limit on the last substrate 211 lower surface 211a of discharge cell 226.This protective layer 216 that is formed on that barrier 215 lower surface 215c ' go up and goes up on the substrate 211 lower surface 211a can not have a negative impact to the operation according to the PDP200 of present embodiment.And, be formed on that barrier 215 lower surface 215c ' go up and go up the emission that this protective layer 216 on the substrate 211 lower surface 211a helps secondary electron.

With reference to figure 4A, B and Fig. 3 and Fig. 5, the last sparking electrode 213 and the following sparking electrode 212 that surround discharge cell 226 are provided with in last barrier 215 separated from one anotherly again.For sparking electrode 213 and following sparking electrode 212 are set in last barrier 215, forming barrier layer 215a on first on the last substrate 211 lower surface 211a, forming sparking electrode 213 on the barrier layer 215a on first, form to cover on the barrier layer 215a on first sparking electrode 213 second on barrier layer 215b, sparking electrode 212 under forming on the barrier layer 215b on second, and can form on the barrier layer 215b on second cover under sparking electrode 212 the 3rd on barrier layer 215c.If necessary, in a particular embodiment, can with barrier layer 215c on the barrier layer 215b and the 3rd on the barrier layer 215a, second on first all stacked be more than two-layer, for example, in order to make thick-layer.

Between last sparking electrode 213 and following sparking electrode 212, be used for the discharge of keeping of display image.Last sparking electrode 213 and following sparking electrode 212 can be made of the conducting metal of for example aluminium or copper, and thereafter described addressing electrode 222 also can be made of conducting metal.

As shown in Figure 3, in PDP200 according to present embodiment, to go up sparking electrode 213, following sparking electrode 212, they are arranged in mode as shown in Figure 5 with addressing electrode 222, side plate and crosspiece that last sparking electrode 213 and following sparking electrode 212 have ladder-shaped, and addressing electrode 222 is set in place on the following substrate 221 upper surface 221a that locate under the central barrier 227, will be described central barrier later on.Form in couples and go up sparking electrode 213 and following sparking electrode 212, and they extend in direction parallel to each other.Addressing electrode 222 extends to the direction that the width with last sparking electrode 213 and following sparking electrode 212 intersects.The said structure of electrode makes to go up between one of sparking electrode 213 and following sparking electrode 212 and the addressing electrode 222 and discharges, and discharges between last sparking electrode 213 and following sparking electrode 212.

Generally include the sparking electrode of keeping of a pair of X of being called and Y electrode and addressing electrode 222 by address discharge and the discharge cell of keeping the operated PDP of discharge.Address discharge is the discharge that occurs between Y electrode and the addressing electrode 222.Thus, in the present embodiment, in the situation below addressing electrode 222 being arranged on sparking electrode 213 and following sparking electrode 212, following sparking electrode 212 can be the Y electrode.If following sparking electrode 212 is Y electrodes, then going up sparking electrode 213 can be the X electrode.

In the present embodiment, last sparking electrode 213 and following sparking electrode 212 surround discharge cell 226, and what do not resemble employing in the conventional PDP design keeps sparking electrode 112 and 113.Therefore, compare with conventional design, the space that is used to keep discharge is relatively big, because keep discharge along the girth of this discharge cell 226.Thus, be higher than luminous efficiency according to the luminous efficiency of the PDP of present embodiment according to the PDP of the PDP design of routine.

In discharge cell 226 according to present embodiment PDP200, can reduce keep that interdischarge interval (shown in the curved arrow of Fig. 4 A) takes place by the ion sputtering on fluorescence coating 225 that charged particle caused, this is to occur over just top (being that discharge cell 226 approaches on the part of substrate 211) because keep discharge, thus, reduce because the permanent image bonding that fluorescence coating 225 declines are produced.

Between central barrier 227 and addressing electrode 222, dielectric layer 223 is set.By it being covered on the addressing electrode 222, dielectric layer 223 can prevent addressing electrode 222 because the damage that interdischarge interval and charged particle collision are produced.Dielectric layer 223 can be by PbO, B ₂O ₃Or SiO ₂Dielectric layer 223 constitutes, because must be to be made of the dielectric material that can bring out charged particle.

Barrier 224 down is set between last barrier 215 and following substrate 221, in particular, is between last barrier 215 and dielectric layer 223.Following barrier 224 determine the fluorescence coating that includes red fluorescence material the zone, include the zone and the zone that includes the fluorescence coating of green fluorescent material of the fluorescence coating of blue fluorescent material.

Following barrier 224 needn't have the shape identical with last barrier 215.As shown in Figure 3, in the present embodiment, following barrier 224 has continuous strip, and this shape has and is easy to make the foreign gas discharging and is easy to fill the advantage of discharge gas to discharge cell 226 in PDP make to handle.

Though last barrier 215 has different shapes with following barrier 224, they can be formed one.In Fig. 3, on last substrate 211 lower surface 211a, form barrier 215, and under forming on the dielectric layer 223 barrier 224, but also can go up this time of formation barrier 224 (as Fig. 4 A, B) at the lower surface 215c ' of last barrier 215.Yet in this structure of back, following barrier 224 has the taper towards the below, and unlike the back taper shown in Fig. 3.As a reference, form barrier 215 and following barrier 224 and do not mean that in single treatment step and form them simultaneously, but mean if do not carry out additional step, as the step that barrier 215 and following barrier 224 are separated along lower surface 215c ', they just can not separate.

With reference to figure 4A, B, central barrier 227 being set in discharge cell 226 again, in particular, is that the core at discharge cell 226 is provided with central barrier 227.The height H 1 of central authorities' barrier 227 is not less than down the height H 2 of barrier 224, and is not less than the height H 3 of sparking electrode 213 at least.In the PDP shown in Fig. 2, if central barrier 126 is set in inferior pixel, then central barrier 126 will undesirably hinder and be formed on the discharge path of keeping between sparking electrode 112 and 113.Yet, in the present embodiment, be formed on the discharge path of keeping between sparking

electrode

213 and 212, because will keep the next door that sparking

electrode

213 and 212 has been arranged on discharge cell 226 with not hindering.That is, keeping sparking

electrode

213 and 212 all is limited in around the discharge cell 226.Thereby, there is not central barrier can hinder path between the adjacent part of

keeping sparking electrode

213 and 212.

In each discharge cell 226, form fluorescence coating 225, in particular, on the upper surface 223a of dielectric layer 223, on following barrier 224 side surface 224a and on the central barrier 227 side surface 227a.After applying fluorescence cream, it is carried out drying and toasts forming this fluorescence coating 225, wherein will be used for the fluorescent material of red-emitting, the fluorescent material that is used to launch blue light, the fluorescent material that is used for transmitting green light and be blended in solvent, and the upper surface 223a that is bonded in dielectric layer 223 goes up, on barrier 224 side surface 224a down and on the central barrier 227 side surface 227a.The fluorescent material that is used for red-emitting can be Y (V, P) O ₄: Eu, the fluorescent material that is used to launch blue light can be BAM:Eu, the fluorescent material that is used for transmitting green light can be Zn ₂SiO ₄: Mn, and YBO ₃: Tb.

At first, can understand in the present embodiment, the surface area of fluorescence coating 225 is enough broad, because not only being formed with fluorescence coating 225 on the barrier 224 side surface 224a down, also be formed with fluorescence coating 225 on central barrier 227 side surface 227a.Thus, fully increased and be used for to be described this in the back by accepting to launch the gross area of visible light by the ultraviolet ray that discharge gas produced.Secondly, the fluorescence coating 225 that is formed on the central barrier 227 side surface 227a can be accepted a large amount of ultraviolet rays, because the contiguous discharge space of side surface 227a (referring to the circular part of extracting out shown in the arrow among Fig. 4 A, the B), thereby launch a large amount of visible lights.Above-mentioned two situations can significantly increase the luminous efficiency of PDP200.

If the height H 1 of central barrier 227 is not less than the height H 3 of sparking electrode 213, then can be with the ultraviolet quantity maximization of the fluorescent material of fluorescence excitation layer 225, penetrate because should ultraviolet ray mainly respond the discharge gas that is filled in each 226 space, unit that is adjacent to sparking electrode 213 and following sparking electrode 212 most.

Discharge gas is filled in the space of each discharge cell 226 formation.Discharge gas can be the Ne-Xe mist that comprises 5-15%Xe, but if necessary, available He substitutes a part of Ne.

Below the operation of PDP200 is described.By provide addressing voltage Va between addressing electrode 222 and following sparking electrode 212 address discharge takes place between them, and the discharge cell 226 that wherein can keep discharge is selected, as the result of address discharge.The option table of discharge cell 226 is shown on the barrier 215 (if cover upward barrier 215 by protective layer 216; then on this protective layer 216) savings of wall electric charge, so that can be on being adjacent to discharge (shown in the curved arrow of Fig. 4) on the zone of sparking electrode 213 and following sparking electrode 212.When address discharge takes place when, put aside cation on the zone that is close to following sparking electrode 212, on approaching, put aside electronics on the zone of sparking electrode 213.

After address discharge stops, when providing between following sparking electrode 212 in selected discharge cell 226 and the last sparking electrode 213 when keeping discharge voltage Vs, by savings with the contiguous zone of following sparking electrode 212 on cation collide with the electronics of putting aside on the zone of approaching sparking electrode 213, and keep discharge.When keeping discharge and continue, repeatedly providing the reverse discharge voltage Vs that keeps down between sparking electrode 212 and the last sparking electrode 213.

Increase the energy level of discharge gas by keeping discharge, and make the ultraviolet ray emission, thereby the energy level that discharge gas has increased is reduced to the energy level of keeping before discharging by discharge gas.Ultraviolet ray has increased the energy level that is included in fluorescent material in the fluorescence coating 225 that is arranged in the corresponding discharge cell 226, and launches visible light when the corresponding minimizing of the energy level of fluorescent material.By the visible light of launching by discharge cell 226, display color visual picture on PDP200.

First improvement project with reference to figure 6 and 7 couples first embodiment is described.

Fig. 6 is the cross-sectional view of first improvement project of first embodiment; Fig. 7 is the local oblique view that is illustrated in the electrode structure in first improvement project of first embodiment.

First improvement project of first embodiment is to be arranged on inferior addressing electrode 322a and the 322b that each addressing electrode 322 in the discharge cell 226 has two almost parallels and is electrically connected with the main distinction of first embodiment, and each

time addressing electrode

322a and 322b all are arranged on down on the substrate 221 upper surface 221a, wherein, a crosspiece among inferior addressing electrode 322a and the 322b is positioned between central barrier 227 and the following barrier 324.Addressing electrode 322 embeds dielectric layer 223.

Address discharge takes place with following sparking electrode 212 in addressing electrode 322.Thus, when a 322a and a crosspiece among the 322b with addressing electrode 322 are arranged on each central barrier 227 and the adjacent following substrate 221 upper surface 221a between the barrier 324 down, with respect to addressing electrode 322 is set directly at central barrier 227 just below the time, can improve address discharge.

Can be connected with 322b two addressing electrode 322a by the side plate or the first link 322c.The disconnection problem that the first link 322c can prevent

time addressing electrode

322a and 322b to produce owing to the fixedly failure that is taken place during manufacture, and the uneven problem of generation voltage between inferior addressing

electrode

322a, 322b that causes owing to local interruption, uneven texture irregular or this time addressing electrode 322a, 322b.In Fig. 7, the first link 322c is arranged on the outside of discharge cell 226, but also this first link 322c can be arranged in the discharge cell 226.

Unaccounted those parts are identical with illustrated corresponding component with description in the above-mentioned explanation of first embodiment substantially in first improvement project.

Second improvement project with reference to figure 8 and 9 couples first embodiment is described.

Fig. 8 is the cross-sectional view of second improvement project of first embodiment; Fig. 9 is the local oblique view that is illustrated in the electrode structure in second improvement project of first embodiment.

Second improvement project of first embodiment and the main distinction of first embodiment are addressing electrode 422 embedded and go up in the barrier 215, and this addressing electrode 422 comprises two inferior addressing electrode 422a and the 422b or the crosspiece of the almost parallel that separates with last sparking electrode 213 with following sparking electrode 212.

Two

time addressing electrode

422a and 422b embed barrier 215 each on, make these two inferior addressing

electrode

422a and 422b corresponding to the addressing electrode 422 on the not the same barrier 215 of the opposite side that is placed in each discharge cell 226.

Address discharge takes place in following sparking electrode 212 and last sparking electrode 213.Thus, when with addressing electrode 422 as in the embedding as in second improvement project in the barrier 215, rather than with addressing electrode 422 be arranged on central barrier 227 just below the time, can improve the reliability of address discharge.

Can be connected with 422b two time addressing electrode 422a by the second link 422c, make each addressing electrode 422 in corresponding row effectively be looped around all discharge cells around, as shown in Figure 9.The second link 422c can solve

time addressing electrode

422a and 422b because the fixing disconnection problem of failing and producing, when preventing by the inhomogeneous and irregular inhomogeneous generation of voltage between inferior addressing

electrode

422a and 422b that causes of the structure of this

time addressing electrode

422a and 422b, the said fixing failure can take place during manufacture.And, according to such structure, by the distance between the wall of controlling

time addressing electrode

422a, 422b, 422c and discharge cell 226, can be along four continuous surface generation address discharges around discharge cell 226.

In Fig. 8 and 9, with addressing electrode 422 be arranged on sparking electrode 213 above, but also this addressing electrode 422 can be arranged on down sparking electrode 212 below.If when addressing electrode 422 is arranged on sparking electrode 213 top, can between addressing electrode 422 and last sparking electrode 213 address discharge take place.On the other hand, when addressing electrode 422 is arranged on down sparking electrode 212 below the time, can down between sparking electrode 212 and the addressing electrode 422 address discharge take place.Yet, in order equably the discharge gas that is filled in a large number in the discharge cell 226 to be excited, with addressing electrode 422 be arranged on sparking electrode 213 above be favourable because be contemplated that last sparking electrode 213 and following sparking electrode 212 are positioned in the vertical direction at discharge cell 226 centers.This addressing electrode 422 is set in any case, and addressing electrode 422 all separates with following sparking electrode 212 and electric insulation with last sparking electrode 213.

Those parts of explanation are not roughly the same with the parts in first embodiment fully in the above-mentioned explanation of second improvement project.

To the 3rd improvement project of first embodiment be described now.The 3rd improvement project of first embodiment and the main distinction of first embodiment are there is not addressing electrode 222 in the 3rd improvement project.Do not need to have addressing electrode 422 and discharge, because in any specific discharge cell 226, two sparking electrodes can generate electricity.

When not having addressing electrode 222, last sparking electrode 213 extends in a direction, and following sparking electrode 212 extends with last sparking electrode 213 square crossings ground.Do not need to have dielectric layer 223, because do not have addressing electrode 222 here yet.Thus, barrier 224 under forming on the following substrate 221 upper surface 221a, and forming fluorescence coating 225 on barrier 224 side surface 224a, central barrier 227 side surface 227a and the following substrate 221 upper surface 221a down.

Those parts of explanation are not roughly the same with the parts in first embodiment fully in the above-mentioned explanation of the 3rd improvement project.

With reference to Figure 10 and 11, will the main distinction of the second embodiment of the invention and first embodiment be described.

Figure 10 is the exploded perspective view after the part of cutting according to the PDP of second embodiment of the invention; Figure 11 is along the formed partial cross section view of Figure 10 section line XI-XI.

Difference between first and second embodiment is, forms the following barrier 524 that has with last barrier 215 identical patterns in the structure of second embodiment.Referring to Figure 10, last barrier 215 is determined enclosure space in a horizontal direction, and the following barrier 524 in the present embodiment is also determined enclosure space in a horizontal direction.In this embodiment, increased the area of time barrier 524 side surface 524a, and the corresponding thus area that increases fluorescence coating 225.As a result, also increase the quantity of the visible light of being launched by discharge cell 226, improved the luminous efficiency of PDP500 thus.

In the present embodiment, can will go up barrier 215 and following barrier 524 is integrally formed as monolithic integrated circuit, or, also can distinguish formation independently.When barrier 215 and following barrier 524 are gone up in formation respectively, can between last barrier 215 and following barrier 524, spacer 528 be set.Keep between barrier 215 and the following barrier 524 by spacer 528 and to have certain intervals, make to make to be easy to discharge impurity and gas and to fill discharge gas during handling at PDP.In Figure 10, forming spacer 528 on the barrier 524 down, also can go up and form this spacer 528 at last barrier 215 lower surface 215c '.

In the time will going up barrier 215 and following barrier 524 and form as one, be difficult to determine the line of demarcation between barrier 215 and the following barrier 524 with identical patterns.If this is the case, will be considered as marginal arbitrarily plane from the mid point of the height of selected integrated barrier 215,524 between last barrier 215 and the following barrier 524.

Also can come according to modification second embodiment is improved to first embodiment.Those parts of not describing fully in the above-mentioned explanation of second embodiment are roughly the same with the corresponding component in first embodiment.

Referring to figs. 12 to 14, will the main distinction of third embodiment of the invention and first, second embodiment be described.

Figure 12 is the exploded perspective view after the part of cutting according to the PDP of third embodiment of the invention; Figure 13 is along the formed partial cross section view of Figure 12 section line XIII-XIII; Figure 14 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 12.

In the 3rd embodiment, the height H 1 of central barrier 627 is substantially equal to down the height H 2 of barrier 224.And last barrier 615 is determined the discrete discharge cell 226 of oldered array with last substrate 211 and following substrate 221, wherein should go up barrier 615 and comprise the first wall extension 615a and the second wall extension 615b that intersects with first wall extension 615a inclination.Last barrier 615 and following barrier 224 are made of the dielectric substance that is arranged between substrate 211 and the following substrate 221, more specifically, are on last substrate 211 lower surface 211a.In Figure 12, arrange discharge cell 226 with the orthogonal array matrix shape, but be not limited thereto, also can it be arranged triangle.

In the conventional design of PDP, after the processing and independent processing carried out to substrate 111 on forming for substrate 121 under forming, on the upper surface 221a owing to lower surface 111a that different elements is arranged on substrate 111 and following substrate 121, must seal two substrates 111 and 121.Yet, in the time will going up barrier 615 and following barrier 224 with following substrate 221 and be integrally formed as monolithic integrated circuit, do not need to be used to form the treatment step of substrate 211, thus, simplified the treatment step of formation PDP.

Central authorities' barrier 627 can extend in the direction of addressing electrode 622; promptly; be parallel to down barrier 224 and separate with it; and be parallel to the first wall extension 615a; because all central barriers 627 increase luminous efficiency by the surface area that enlarges fluorescence coating 225; to be described this in the back, and placement that should central authorities' barrier 627 must protect the discharge cell 622a of addressing electrode 622 to make it to avoid the damage that ion sputtering causes.

With reference to Figure 13, the discharge cell 622a of addressing electrode 622 is arranged in the central barrier 627.With reference to Figure 14, addressing electrode 622 comprises discharge cell 622a and the horizontal link 622b that embeds in the central barrier 627, this horizontal link 622b crosses under the wall 615b of last barrier and connects discharge cell 622a under the discharge cell 226, and along with the direction extension of the length of last sparking electrode 213 and following sparking electrode 212 and

crosspiece

213a, 212a square crossing.

Address discharge takes place with following sparking electrode 212 in the discharge cell 622a of addressing electrode 622.Thus, the discharge cell 622a of addressing electrode 622 is arranged to following sparking electrode 212 approaching more, and the amplitude of addressing voltage Va reduces manyly more.Low addressing voltage can effectively reduce power consumption, and luminous efficiency is improved.Thus, wish discharge cell 622a is arranged in the top of central barrier 627, and if like this, the height H 4 of discharge cell 622a can satisfy with lower inequality, H4＞(H/2).

In the practice of present embodiment, because addressing electrode 622 is embedded in the central barrier 627, so the following dielectric layer 123 that is contained in conventional PDP is unnecessaryly to have at this.

Being provided with fluorescence coating 225 in discharge cell 226, more specifically, is on the central barrier 227 side surface 227a and on the following barrier 224 side surface 224a.Can form fluorescence coating 225 on the substrate 221 upper surface 221a down, but in the time will descending barrier 224 and central barrier 227 to be provided with, also can not form this fluorescence coating 225 each other too closely.

Those elements of not describing fully in the above-mentioned explanation of the 3rd embodiment are roughly the same with the element in first embodiment.

With reference to Figure 15 and 16A, 16B, will be described the improvement project of third embodiment of the invention and the main distinction of the 3rd embodiment.

Figure 15 is the exploded perspective view after the part of cutting according to the PDP of the improvement project of third embodiment of the invention; Figure 16 A, 16B are along the formed partial cross section view of Figure 15 section line XVI-XVI.

The main distinction of the improvement project of the 3rd embodiment and the 3rd embodiment is to be provided with auxiliary barrier 728 between the second wall extension 615b and following substrate 221, in particular, auxiliary barrier 728 is formed at down on the substrate 221 upper surface 221a, and forms fluorescence coating 225 on auxiliary barrier 728 side surfaces.Because being formed with fluorescence coating 225 on auxiliary barrier 728 side surfaces makes the surface area of fluorescence coating 225 wideer, thereby has increased the emission of visible light, correspondingly improves the luminous efficiency of PDP thus.

When the height that will assist barrier 728 is designed to when consistent with the height of following barrier 224, need not to be used to form the additional treatment step of this auxiliary barrier 728, should auxiliary barrier 728 because can form simultaneously with following barrier 224.Can will descend barrier 224, central barrier 627 and auxiliary barrier 728 to be formed on the monolithic integrated circuit.

May be separately formed the first wall extension 615a and the following barrier 224 of barrier 215.When independent formation first wall extension 615a and following barrier 224, also may be separately formed the second wall extension 615b and auxiliary barrier 728, and when the first wall extension 615a is formed as one with following barrier 224, also the second wall extension 615b and auxiliary barrier 728 can be formed on the monolithic integrated circuit.

Improvement project shown in Figure 15 and 16A, the 16B is to form the first wall extension 615a and following barrier 224 separately and the structure (promptly when forming the second wall extension 615b and auxiliary barrier 728 separately) of formation.In this structure, can between the first wall extension 615a and following barrier 224 or between the second wall extension 615b and auxiliary barrier 728, spacer 729 be set.Guarantee between last barrier 215 and following barrier 224, to have certain intervals by spacer 729, make in the PDP manufacturing is handled, to be easy to discharge foreign gas and to fill discharge gas.In Figure 15, forming this spacer 729 on the barrier 224 down, also can go up and form this spacer 729 at last barrier 615 lower surface 615c '.

When the first wall extension 615a and following barrier 224 being formed on monolithic integrated circuit (and be formed on monolithic integrated circuit with the second wall extension 615b and auxiliary barrier 728), there is not spacer 729, and forming the first wall extension 615a on the barrier 224 down, on auxiliary barrier 728, form the second wall extension 615b.In this structure, the cross section of the first wall extension 615a and the second wall extension 615b is a collapsed shape, promptly, along with

wall extension

615a, 615b arrive the increase of the distance of substrate 221 down, the top of the first wall extension 615a and the second wall extension 615b narrows down gradually, unlike structure shown in Figure 15 and 16A, the 16B.In these structures, be difficult to accurately determine between barrier 215 and the following barrier 224 or the line of demarcation between the second wall extension 615b and the auxiliary barrier 728.In these structures, can be at height mid point by the integrally formed barrier of the first extension component wall extension 615a and following barrier 224, and optionally divide the second extension component wall extension 615b and auxiliary barrier 728 by the height mid point of the integrally formed barrier of the second wall extension 615b and auxiliary barrier 728.

Those elements of not describing fully in the improvement project of the 3rd embodiment are roughly the same with above-mentioned explanation and the element in the diagram at the 3rd embodiment.

With reference to Figure 17 to 19, will the main distinction of fourth embodiment of the invention and the 3rd embodiment be described.

Figure 17 is the exploded perspective view after the part of cutting according to the PDP of fourth embodiment of the invention; Figure 18 is along the formed partial cross section view of Figure 17 section line XVIII-XVIII; Figure 19 is the local oblique view that is illustrated in the electrode structure among the PDP shown in Figure 17.

The difference of third and fourth embodiment is that the height H 1 of central barrier 827 is not less than down the height H 5 of sparking electrode 212.

If increase the height H 1 of central barrier 827, then can corresponding increase be formed on the surface area of the fluorescence coating 225 on the central barrier 827 side surface 827a, improve luminous efficiency thus.And, when the height H 1 of central barrier 827 approaches the height of sparking electrode 213, owing to launch ultraviolet ray by the discharge gas concentrated area that is filled in the discharge cell space that is close to last sparking electrode 213 and following sparking electrode 212, thereby can excite phosphorus to greatest extent.

The height H 4 of the discharge cell 822a of Figure 18 display addressing electrode equals the down height H 5 of sparking electrode 212, but when generation address discharge between the discharge cell 822a of addressing electrode and following sparking electrode 212, this structure is fit to.And when between the discharge cell 822a of addressing electrode 822 and last sparking electrode 213, address discharge taking place, wish to make the height H 3 of the discharge cell 822a of addressing electrode 822 to equal the height H 6 of sparking electrode 213.

If increase the height H 1 of central barrier 827, then the discharge cell 822a of addressing electrode 822 can be arranged on than position higher in the 3rd embodiment (promptly from substrate 211 is farther down).Thus, the height H 4 of the discharge cell 822a of addressing electrode 822 can equate with the height H 5 of following sparking electrode 212 or the height H 6 of last sparking electrode 213.In this structure, reduced the distance that is used for address discharge, thereby further reduced addressing voltage Va, this can correspondingly make power consumption reduce and improve luminous efficiency.

Shown in Figure 17,18, a part that is arranged in the central barrier 827 of discharge cell 226 can be extended to higher height H 1, it is higher than the lower surface 615c ' height H 2 of the lowest part of barrier 215, and other parts that last barrier 215 is positioned at outside the discharge cell 226 are non-extensible to being higher than barrier 215 lower surface 615c ' highly, so that admit the lowermost portion of the second wall extension 615b.Thus, be positioned at the top outside the discharge cell 226 and form depression parts recess 827b along central barrier 827, this recess 827b can be received into the lowermost portion that goes up the second wall extension 615b of barrier 615 wherein.

With reference to Figure 17,18,19, when the height H 4 of the discharge cell 822a of addressing electrode 822 is higher than the height H 2 of barrier 215 lower surface 615c ', the horizontal link 822b that is electrically connected this discharge cell 822a must be arranged on the position that is lower than the height H 2 that goes up barrier 215 lower surface 615c '.In this case, by vertical link 822c discharge cell 822a and horizontal link 822b are electrically connected, and this vertical link 822c is arranged in the part of central barrier 827, wherein central barrier 827 is based upon in the discharge cell 226, as shown in figure 19.

Also can as to the modification of the 3rd embodiment, the 4th embodiment be improved.Those elements of not describing fully in the 4th embodiment are roughly the same with the respective element in the 3rd embodiment.

With reference to Figure 20 and 21, will to fifth embodiment of the invention be described in the main distinction of preceding embodiment.

Figure 20 is the exploded perspective view after the part of cutting according to the PDP of fifth embodiment of the invention; Figure 21 is along the formed partial cross section view of Figure 20 section line XXI-XXI.

Present embodiment can be lower than the height H 2 of barrier 224 down be the height H 1 of central barrier 927 in the difference of preceding embodiment.

Because it is bigger to be deposited on the effective surface area of the fluorescence coating 225 on the central barrier 927 side surface 927a, thereby can improve the light reflection efficiency of PDP.And because the height of central barrier 927 is very low, central barrier 927 is not arranged on the generation of discharge cell 226 basically and concentrates the part of discharge.Thus, because reduced the possibility that reduces the space that produces particle during plasma discharge, can in the space of discharge cell 226 plasma discharge can take place glibly.

Those elements of not describing fully in the 5th embodiment are roughly the same with the respective element in preceding embodiment.

With reference to Figure 22 and 23, will to sixth embodiment of the invention be described in the main distinction of preceding embodiment.

Figure 22 is the exploded perspective view after the part of cutting according to the PDP of sixth embodiment of the invention; Figure 23 is along the formed partial cross section view of Figure 22 section line XXIII-XXIII.

Present embodiment be that in the difference of preceding embodiment central barrier is unnecessary in the 6th embodiment.

In the conventional design of PDP, exist the problem of the surface area deficiency of the fluorescence coating 125 that the smooth surface owing to fluorescence coating 125 brings.Yet in the PDP according to the 6th embodiment, the projection 1025a that forms owing to the fluctuation of the irregular and thickness on fluorescence coating 1025 surfaces is penetrated by ultraviolet ray, has increased the surface area of fluorescence coating 1025 effectively.Thus, increased the emission of visible light, because more effectively be implemented in the collision that is taken place between ultraviolet ray and the fluorescence coating 1025 by the surface area that increases fluorescence coating 1025.Thereby, improved the luminous efficiency of PDP.

Those elements of not describing fully in the 6th embodiment are roughly the same with the element in preceding embodiment.

Though the present invention has been carried out concrete demonstration and explanation with reference to its exemplary embodiments, but what one of ordinary skill in the art will appreciate that is, need not to run counter to the spirit and scope of the present invention, can carry out various changes to it in the form and details as being limited by the back claim.

Claims

1, a kind of plasma display panel (PDP), it comprises:

Last substrate;

Following substrate, itself and last substrate be arranged in parallel;

A plurality of barriers of going up, it is made of the dielectric that is arranged between substrate and the following substrate, and barrier is determined a plurality of discharge cells with last substrate and following substrate on this;

A plurality of sparking electrodes of going up, it is arranged in the barrier, to surround discharge cell;

A plurality of sparking electrodes down, it separates with last sparking electrode, and is arranged in the barrier, to surround discharge cell;

A plurality of barriers down, it is arranged between barrier and the following substrate;

A plurality of central barriers, it is arranged in the discharge cell;

A plurality of fluorescence coatings are formed on down between barrier side surface and the central barrier side surface; With

Discharge gas, it is filled in the discharge cell.

2, according to the plasma display panel in the claim 1, wherein the height of central barrier is lower than the height of barrier down.

3, according to the plasma display panel in the claim 1, wherein the height of central barrier is substantially equal to down the height of barrier.

4, according to the plasma display panel in the claim 1, wherein the height of central barrier is higher than the height of barrier down.

5, according to the plasma display panel in the claim 4, wherein the height of central barrier is not less than the height of sparking electrode.

6,, wherein central barrier is arranged on the center of discharge cell according to the plasma display panel in the claim 1.

7, according to the plasma display panel in the claim 1, barrier and central barrier under wherein on following substrate top surface, forming.

8,, wherein go up barrier and comprise first wall extension and second wall extension that intersects with first wall extension according to the plasma display panel in the claim 1.

9, the plasma display panel in according to Claim 8, wherein central barrier is parallel to first wall extension.

10, the plasma display panel in according to Claim 8 further comprises the auxiliary barrier that is arranged between second wall extension and the following substrate, and further described fluorescence coating is formed on the auxiliary barrier side surface.

11, according to the plasma display panel in the claim 10, wherein the height of auxiliary barrier equals the height of barrier down.

12, according to the plasma display panel in the claim 10, wherein will descend barrier, central barrier and auxiliary barrier form as one.

13,, wherein between first wall extension and following barrier or between second wall extension and auxiliary barrier, spacer is set according to the plasma display panel in the claim 10.

14,, wherein first wall extension and following barrier are formed as one, and second wall extension and auxiliary barrier are formed as one according to the plasma display panel in the claim 10.

15, the plasma display panel in according to Claim 8, the height that wherein central barrier is positioned at the part of discharge cell is not less than down the height of sparking electrode, and form recess on central barrier is positioned at other parts outside the discharge cell, this recess can be received into second wall extension wherein.

16,, wherein descend sparking electrode in the direction of intersecting with last sparking electrode institute bearing of trend, to extend according to the plasma display panel in the claim 1.

17,, further be included in the addressing electrode that extends in the direction of intersecting, and upward sparking electrode extends parallel to each other with following sparking electrode with following sparking electrode and last sparking electrode institute bearing of trend according to the plasma display panel in the claim 1.

18, according to the plasma display panel in the claim 17, wherein addressing electrode comprises the discharge cell that is arranged in the central barrier, with the horizontal link that is connected this discharge cell.

19, according to the plasma display panel in the claim 18, wherein the height of discharge cell is not less than down the height of sparking electrode, the height of horizontal link is lower than the height of discharge cell, and by the vertical link in central barrier the horizontal link of this discharge cell and this is connected.

20,, wherein discharge cell is arranged in the top of central barrier according to the plasma display panel in the claim 18.

21, according to the plasma display panel in the claim 17, wherein addressing electrode is arranged on down on the upper surface that is positioned in the substrate under the central barrier, between addressing electrode and central barrier, dielectric layer is set, and further fluorescence coating is formed on the dielectric layer upper surface.

22, according to the plasma display panel in the claim 17, wherein addressing electrode comprises two inferior addressing electrodes that are set in place on the following substrate top surface between central barrier and the following barrier, dielectric layer covers this addressing electrode, and forms fluorescence coating on this dielectric layer.

23,, wherein two addressing electrodes that are included in the addressing electrode are connected by first link according to the plasma display panel in the claim 22.

24, according to the plasma display panel in the claim 17, wherein addressing electrode comprise with last sparking electrode and down the discharge electrode separation, be arranged on two addressing electrodes in the barrier, and further on following substrate top surface, forming fluorescence coating.

25,, wherein two addressing electrodes that are included in the addressing electrode are connected by second link according to the plasma display panel in the claim 24.

26,, addressing electrode wherein is set, and this addressing electrode is carried out address discharge with last sparking electrode above last sparking electrode according to the plasma display panel in the claim 17.

27,, wherein below following sparking electrode, addressing electrode is set, and this addressing electrode is carried out address discharge with last sparking electrode according to the plasma display panel in the claim 17.

28,, wherein form down barrier with the pattern identical with last substrate according to the plasma display panel in the claim 1.

29,, wherein further forming fluorescence coating on the substrate top surface down according to the plasma display panel in the claim 1.

30,, wherein cover the side surface at least of going up barrier with protective layer according to the plasma display panel in the claim 1.

31,, wherein will go up barrier and following barrier and form as one according to the plasma display panel in the claim 1.

32, a kind of plasma display panel, it comprises:

Last substrate;

Following substrate, itself and last substrate be arranged in parallel;

A plurality of barriers of going up, it is made of the dielectric that is arranged between substrate and the following substrate, and barrier is determined discharge cell with last substrate and following substrate on this;

Fluorescence coating has the projection that increases surface area on its surface, and this projection is around the discharge cell setting; With

Discharge gas, it is filled in the discharge cell.

33,, further comprise being arranged on down following barrier between substrate and the last barrier, that determine the space that is used to be provided with fluorescence coating according to the plasma display panel in the claim 32.

34,, wherein descend sparking electrode in the direction of intersecting with last sparking electrode institute bearing of trend, to extend according to the plasma display panel in the claim 32.

35,, further be included in the addressing electrode that extends in the direction of intersecting, and upward sparking electrode extends parallel to each other with following sparking electrode with following sparking electrode and last sparking electrode institute bearing of trend according to the plasma display panel in the claim 32.

36,, wherein cover this addressing electrode with dielectric layer according to the plasma display panel in the claim 35.

37,, wherein this addressing electrode is arranged on down on the substrate top surface according to the plasma display panel in the claim 35.

38,, wherein cover the side surface at least of going up barrier with protective layer according to the plasma display panel in the claim 32.