EP0988643B1 - Panneau a plasma a effet de conditionnement de cellules - Google Patents
Panneau a plasma a effet de conditionnement de cellules Download PDFInfo
- Publication number
- EP0988643B1 EP0988643B1 EP98929503A EP98929503A EP0988643B1 EP 0988643 B1 EP0988643 B1 EP 0988643B1 EP 98929503 A EP98929503 A EP 98929503A EP 98929503 A EP98929503 A EP 98929503A EP 0988643 B1 EP0988643 B1 EP 0988643B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plasma panel
- panel according
- barriers
- confinement
- anyone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003750 conditioning effect Effects 0.000 title description 7
- 230000004888 barrier function Effects 0.000 claims description 48
- 239000003086 colorant Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- -1 enamel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/34—Vessels, containers or parts thereof, e.g. substrates
- H01J11/36—Spacers, barriers, ribs, partitions or the like
Definitions
- the invention relates to plasma panels, and more particularly, means making it possible to obtain an effect conditioning of cells ".
- Plasma panels are screen-type image display screens
- PAPs whose operation is of the continuous type, and those whose operation is alternative type. All these PAPs operate on the principle of a discharge in gases accompanied by an emission of light. They include generally two insulating slabs, each carrying one or more networks of electrodes, and delimiting between them a space filled with gas. The slabs are assembled together so that the networks electrodes are orthogonal. Each electrode intersection defines a cell to which a gaseous space corresponds.
- FIG. 1 represents, by way of example, in a partial and simplified, a classic structure of alternative PAP color.
- alternative PAPs include: those of the type using only two electrodes crossed to define and control a cell, as described in particular in a French patent published with No. 2,417,848; or those of the type called "coplanar structure", the structure and functioning of which are described for example in the European patent document EP-A-0.135.382.
- Alternative PAPs have a common feature, which is to present in operation an internal memory effect, due to the fact that their electrodes are coated with a layer of a dielectric material which isolates the gas, that is from the discharge.
- the PAP is of the two type cross electrodes to define a cell. It has two substrates or slabs 2, 3, one of which is a front slab 2, ie the slab which is side of an observer (not shown); this slab carries a first network of electrodes called "line electrodes", of which only 3 electrodes Y1, Y2, Y3 are represented. Electrodes lines Y1 to Y3 are covered a layer 5 of a dielectric material.
- the second slab 3 forms the back slab, it is the opposite of the observer and therefore it is she who is preferably provided with the which may prevent the transmission of light to the observer; she carries a second network of electrodes called 'column electrodes', of which only 5 electrodes X1 to X5 are represented.
- the two slabs 2, 3 are made of the same material, usually glass. These two slabs 2, 3 are intended to be assembled to each other, so that the electrode arrays lines and columns are orthogonal to each other.
- the column electrodes X1 to X5 are they also covered with a layer 6 of dielectric material.
- Layer dielectric 6 is itself covered with layers forming strips 7, 8, 9 phosphor materials, respectively corresponding respectively in the colors green, red and blue.
- the phosphor strips 7, 8, 9 are arranged parallel to the column electrodes X1 to X5, above these last of which they are separated by the dielectric layer 6.
- the slab 3 backing further comprises barriers 11, parallel to the strips phosphors 7, 8, 9 and arranged therebetween.
- the PAP is formed by the assembly of the front and rear slabs 2, 3, which makes a matrix of C1 to Cn cells.
- the cells are then defined at the intersection each between a row electrode Y1 to Y3 and a column electrode X1 to X5.
- Each cell has a zone of discharge whose section corresponds substantially to so-called surfaces "useful” formed by the surfaces facing the two crossed electrodes.
- the discharge in the gas generates loads which, in the case of an "alternative" PAP, accumulate on the dielectrics 5, 6 with respect to row and column electrodes; in the example shown, this is obtained at the rear slab 3 using of Ep1 savings at Epn, carried out in phosphor strips 7, 8, 9 substantially to the right of the useful surfaces of the column electrodes X1 to X5.
- the intersections made by the first electrode line Y1 with column electrodes X1 to X5 define a row of cells, each cell being materialized by a savings: the first cell, C1 is located at the level of the first savings Ep1, the second cell C2 is located at the level of the second savings Ep2 and so on up to the fifth savings Ep5 which materializes a fifth cell C5.
- the first, second and third Ep1, Ep2, Ep3 are respectively located in a band green phosphor 7, red 8 and blue 9, they correspond to monochrome cells of three different colors which together can constitute a trichromatic cell.
- the quality of the discharges in each cell depends on the characteristics geometric and dimensional dimensions of cells, and the overall quality of the PAP requires that these characteristics be reproduced with low dispersion for all PAP cells.
- One of these Particularly important features, is the height of space gaseous formed between the front and rear slabs 2, 3, when they are assembled to each other.
- the carrier barriers 11 thus having the same height H1 as the space separating the slabs 2, 3, they constitute partitions relatively tight so that in addition to their function mentioned above, they provide another function called "de confinement function. "This containment function is well known and consists of on the one hand, to confine the discharge, ie to prevent its spread to neighboring unaddressed cells, and thus to avoid a crosstalk effect between cells; and on the other hand, to prevent the ultraviolet radiation created by a discharge in a given cell Excites phosphors from adjacent cells and causes a lack color saturation, this phenomenon being known as an effect of crosstalk. It should be noted that in the example shown in FIG.
- carrying barriers 11 being arranged so as to separate two strips phosphors 7, 8, 9 of different colors according to a structure called "in triad ", they perform these functions only between cells located on the along the same line electrode Y1 to Y3, as for cells C1 to C5.
- JP-06208109 discloses an electro-optical device addressed by a plasma panel.
- the panel comprises means (9) for confining the cells and spacer means (10, 5) placed outside said confinement means.
- the present invention aims to enable in a PAP, the establishment of the containment and conditioning functions of cells mentioned above, in a simple way and without harming the consistency of spacing between the two PAP slabs. It proposes to this purpose, in particular to decouple the bracing function from that of confinement of the cells, so as to be able to dose the action of the means for containment.
- a plasma panel features according to claim 1.
- FIG. 2 is a simplified representation of a similar view to that of FIG. 1, a plasma panel according to the invention, comprising a front slab 2a and a rear slab 3a.
- the PAP according to the invention is of a type similar to that of the Figure 1: in fact the front panel 2a is, in the example, identical to the face before 2 of FIG. 1, the only differences with the prior art are represented at the rear face 3a, and relate to .means bracing and confinement means.
- the rear slab 3a therefore comprises, in the same way as the slab 3 of FIG. 1, column electrodes X1 to X5 covered with a dielectric layer 6, itself covered by phosphor elements in the form of successive strips 7, 8, 9; as for the back side 3 of FIG. 1, these strips 7, 8, 9 are parallel to the column electrodes X1 at X5 and have Ep1 savings at Epn which each materialize a cell C1 to Cn.
- the means spacers that determine the distance between the two slabs 2a and 3a are constituted by a network of balls or spheres of which only four balls S1, S2, S3, S4 are shown in FIG.
- these two slabs are held against each other by the bridging balls S1 to S4, such that the spacing distance between these slabs 2a, 3a is given by the diameter D1 of the balls.
- the balls S1 to S4 are made of a non-conductive electrical material, glass or sapphire by example; it should be noted that such balls with diameters compatible with those needed in this application (of the order for example 150 micrometers), are quite commonly used in the industry.
- the confinement of C1 to Cn cells is obtained in a more limited way than in the art prior art, using containment barriers B1, B2, ..., B5 having a height H2 less than the distance between the slabs, that is to say at diameter D1 of the balls S1 to S4.
- Containment barriers B1 to B5 are disposed in the same way as the carrier barriers 11 of the figure 1, ie parallel to the column electrodes X1 to X5 and so to separate two phosphor bands 7, 8, 9 contiguous, these two bands phosphors having different colors.
- Barriers can fulfill containment functions (as it was previously explained), ie to slow or even prevent the spread of landfills cell to a neighboring cell, and constitute a clean insulation to isolate optically a cell of the radiation emitted by neighboring cells of different colors.
- Barriers B1 to B5 must have a height for this purpose H2 sufficient to obtain this confinement, while sparing between the summit of these barriers B1 to B5 and the front slab 2a, sufficient space for allow exchange between neighboring cells, an exchange that allows the effect of cell conditioning already explained.
- This useful space to get the effect of conditioning corresponds to a height H3, given by the difference between the diameter D1 of the balls S1 to S4 and the height H2 of the barriers of confinement B1 to B5.
- the H3 value of the free space between barriers B1 to B5 and the front slab 2a may vary depending on technological conditions specific to PAP, and it can be defined by experimentation. However tests show that in a large number of cases, a functioning is obtained by conferring on containment barriers B1 to H2 height between about 65% and 85% of the diameter D1 of the balls S1 to S4.
- barriers of confinement B1 to B5 could also be adopted for another network containment barrier (not shown), another network whose barriers extend perpendicularly to the barriers B1 to 85, so as to form with these crossed barriers.
- a first and a second ball S1, S2 are respectively placed between the first and the second barriers B1, B2, and between the fourth and the fifth barriers B4, B5; these two balls S1, S2 are arranged along an axis 20 perpendicular to containment barriers B1 to B5, which axis is located substantially equal distances between an edge 21 of the slab 3a and the savings Ep1 to Ep5.
- others bridging balls can be arranged along for example a second axis 22, parallel to the first axis 20 and located between the savings Ep6 and Epn.
- the bridging balls can of course be arranged differently, the number and distribution of these beads on the surface of a slab 2a, 3a being determined for example according to the tolerance admitted on the value of the spacing D1 between the two slabs; important is of course that the balls are placed between the cells and therefore not at the precise location of a cell so as not to harm the discharge.
- the containment barriers B1 to B5 are attached to the slab luminophores (the rear panel 3a in the example of FIG. 2), so as to arrange a space H3 between their summit and the other slab.
- This structure with height containment barriers less than the distance between the slabs reduces the important way the evacuation time of the panel what is appreciable during an industrial manufacture.
- Containment barriers B1 to B5 can be realized following a conventional method, similar to that used for barriers carriers 11 shown in FIG. 1: they are then constituted in a electrically nonconductive material, crush-resistant, such as glass, enamel, ceramic, etc.
- the containment barriers B1 to B5 may be made of a material "furniture", that is to say in a material that can crash under the effect of a pressure exerted particularly by the balls S1 to S4; in this case, containment barriers B1 to B5 may be constituted for example by a friable deposit in powder of alumina or silica.
- the type barriers "furniture”, by crashing to let penetrate one or more balls present the advantage of requiring a less precise positioning of the network of balls, of the barrier network B1 to B5, and the relative positioning of the two slabs.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Gas-Filled Discharge Tubes (AREA)
Description
- la figure 1 déjà décrite représente une structure classique de panneau à plasma couleur ;
- la figure 2 représente un panneau à plasma couleur conforme à l'invention.
- soit placer le réseau de billes S1 à S4 sur l'une des dalles 2a, 3a et placer les barrières de confinements B1 à 85 sur l'autre dalle ; l'avantage de barrières B1 à B5 de type "meuble" est que lors de l'assemblage des dalles avant et arrière 2a, 3a, pour chaque bille qui éventuellement tombe en face d'une barrière, elle peut s'enfoncer dans la barrière sans la détruire, comme illustré sur la figure 2 avec une bille S4 enfoncée dans une barrière de confinement 83. Il est à noter que les billes peuvent être maintenues à leur position jusqu'à l'assemblage des dalles, par exemple par un collage résultant d'un chauffage de la dalle ;
- soit placer le réseau de billes S1 à S4 sur la même dalle 3a que les barrières de confinements B1 à B5 : dans ce cas, les billes peuvent être plus aisément placées entre ces barrières.
Claims (14)
- Panneau à plasma comportant :deux dalles (2a, 3a) parallèles assemblées l'une à l'autre, portant chacune au moins un réseau d'électrodes (Y1 à Y3, X1 à X5) définissant des cellules (C1 à Cn), ces dalles distantes l'une de l'autre délimitant entre elles un espace rempli de gaz,des moyens d'entretoisement (S1 à S4) ayant une hauteur égale à la distance (D1) d'écartement des dalles,des moyens de confinement (B1 à B5) des cellules, caractérisé en ce que les moyens de confinement des cellules sont constitués par au moins un réseau de barrières de confinement dont la hateur (H2) perpendiculaire aux dalles est inférieure à la distance d'écartement des dalles, quelques-uns de ces moyens d'entretoisement étant placés entre deux barrières de confinement.
- Panneau à plasma suivant la revendication 1, caractérisé en ce que les moyens d'entretoisement (S1 à S4) sont indépendants des moyens de confinement (B1 à B5).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce que les moyens d'entretoisement (S1 à S4) sont des billes (S1 à S4).
- Panneau à plasma suivant la revendication précédente, caractérisé en ce que les billes (S1 à S4) ont un diamètre (D1) plus grand que la hauteur (H2) des barrières de confinement (B1 à B5).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce que les barrières de confinement (B1 à B5) s'étendent parallèlement à un réseau d'électrodes (X1 à X5).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce qu'il comporte au moins deux types d'éléments luminophores (7, 8, 9) correspondant à des couleurs différentes.
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce que deux éléments luminophores (7, 8, 9) de couleurs différentes sont séparés par une barrière de confinement (B1 à B5).
- Panneau à plasma suivant l'une des revendications 6 ou 7, caractérisé en ce que les éléments luminophores (7, 8, 9) forment des bandes qui s'étendent parallèlement aux électrodes (X1 à X5) de l'un des réseaux d'électrodes.
- Panneau à plasma suivant l'une des revendications 6 à 8, caractérisé en ce que l'une des deux dalles est une dalle dite "dalle avant" (2a) et l'autre dalle est une dalle dite "dalle arrière" (3a) portant les éléments luminophores (7, 8, 9) ainsi que des électrodes colonnes (X1 à X5).
- Panneau à plasma suivant l'une des revendications 6 à 9, caractérisé en ce que les barrières de confinement (B1 à B5) sont solidaires de celle des deux dalle (2a; 3a) qui porte aussi les éléments luminophores (7, 8, 9).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce que les barrières de confinement (B1 à B5) ont une hauteur (H2) comprise entre 65% et 85% de la distance (D1) entre les dalles (2a, 3a).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce que les barrières de confinement (B1 à B5) sont des barrières de type "meuble", réalisées en un matériau pouvant s'écraser sous l'effet d'une pression exercée par les moyens d'entretoisement (S1 à S4).
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce qu'au moins un moyen d'entretoisement (S1 à S4) est placé entre deux cellules (C1 à Cn)
- Panneau à plasma suivant l'une des revendications précédentes, caractérisé en ce qu'il est du type alternatif.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9707181A FR2764437B1 (fr) | 1997-06-10 | 1997-06-10 | Panneau a plasma a effet de conditionnement de cellules |
FR9707181 | 1997-06-10 | ||
PCT/FR1998/001153 WO1998057347A1 (fr) | 1997-06-10 | 1998-06-05 | Panneau a plasma a effet de conditionnement de cellules |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0988643A1 EP0988643A1 (fr) | 2000-03-29 |
EP0988643B1 true EP0988643B1 (fr) | 2005-08-24 |
Family
ID=9507810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98929503A Expired - Lifetime EP0988643B1 (fr) | 1997-06-10 | 1998-06-05 | Panneau a plasma a effet de conditionnement de cellules |
Country Status (8)
Country | Link |
---|---|
US (1) | US6400079B1 (fr) |
EP (1) | EP0988643B1 (fr) |
JP (1) | JP2002503384A (fr) |
KR (1) | KR100616324B1 (fr) |
DE (1) | DE69831330D1 (fr) |
FR (1) | FR2764437B1 (fr) |
TW (1) | TW432351B (fr) |
WO (1) | WO1998057347A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2794568A1 (fr) * | 1999-06-04 | 2000-12-08 | Thomson Plasma | Perfectionnement aux panneaux a plasma de type matriciel |
KR100522686B1 (ko) * | 2002-11-05 | 2005-10-19 | 삼성에스디아이 주식회사 | 플라즈마 표시장치 |
CA2936816A1 (fr) | 2014-02-21 | 2015-08-27 | Terves, Inc. | Fabrication de matieres dissolvantes a vitesse controlee |
US10758974B2 (en) | 2014-02-21 | 2020-09-01 | Terves, Llc | Self-actuating device for centralizing an object |
US20170268088A1 (en) | 2014-02-21 | 2017-09-21 | Terves Inc. | High Conductivity Magnesium Alloy |
US10150713B2 (en) | 2014-02-21 | 2018-12-11 | Terves, Inc. | Fluid activated disintegrating metal system |
US10865465B2 (en) | 2017-07-27 | 2020-12-15 | Terves, Llc | Degradable metal matrix composite |
US11167343B2 (en) | 2014-02-21 | 2021-11-09 | Terves, Llc | Galvanically-active in situ formed particles for controlled rate dissolving tools |
US10689740B2 (en) | 2014-04-18 | 2020-06-23 | Terves, LLCq | Galvanically-active in situ formed particles for controlled rate dissolving tools |
CA2942184C (fr) | 2014-04-18 | 2020-04-21 | Terves Inc. | Particules formees in situ galvaniquement actives pour outils de dissolution a vitesse controlee |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417848A1 (fr) * | 1978-02-21 | 1979-09-14 | Thomson Csf | Methode d'effacement d'un panneau a plasma et systemes de visualisation par panneau a plasma utilisant cette methode |
US4638218A (en) * | 1983-08-24 | 1987-01-20 | Fujitsu Limited | Gas discharge panel and method for driving the same |
JP3366026B2 (ja) * | 1992-02-04 | 2003-01-14 | ソニー株式会社 | プラズマアドレス電気光学装置 |
US5684362A (en) * | 1995-07-25 | 1997-11-04 | Sony Corporation | Plasma addressed electro-optical device having a plasma discharge chamber |
JPH117002A (ja) * | 1997-06-05 | 1999-01-12 | Tektronix Inc | プラズマ・アドレス液晶パネル及びその製造方法 |
-
1997
- 1997-06-10 FR FR9707181A patent/FR2764437B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-03 TW TW087108736A patent/TW432351B/zh not_active IP Right Cessation
- 1998-06-05 JP JP50175199A patent/JP2002503384A/ja not_active Ceased
- 1998-06-05 EP EP98929503A patent/EP0988643B1/fr not_active Expired - Lifetime
- 1998-06-05 WO PCT/FR1998/001153 patent/WO1998057347A1/fr active IP Right Grant
- 1998-06-05 KR KR1019997011575A patent/KR100616324B1/ko not_active IP Right Cessation
- 1998-06-05 DE DE69831330T patent/DE69831330D1/de not_active Expired - Lifetime
- 1998-06-05 US US09/445,338 patent/US6400079B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2764437A1 (fr) | 1998-12-11 |
KR100616324B1 (ko) | 2006-08-28 |
KR20010013568A (fr) | 2001-02-26 |
WO1998057347A1 (fr) | 1998-12-17 |
US6400079B1 (en) | 2002-06-04 |
FR2764437B1 (fr) | 1999-08-27 |
JP2002503384A (ja) | 2002-01-29 |
DE69831330D1 (de) | 2005-09-29 |
EP0988643A1 (fr) | 2000-03-29 |
TW432351B (en) | 2001-05-01 |
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