WO2003003400A1 - Mode de connexion d'un panneau a plasma a son alimentation electrique dans un dispositif de visualisation d'images - Google Patents
Mode de connexion d'un panneau a plasma a son alimentation electrique dans un dispositif de visualisation d'images Download PDFInfo
- Publication number
- WO2003003400A1 WO2003003400A1 PCT/FR2002/002043 FR0202043W WO03003400A1 WO 2003003400 A1 WO2003003400 A1 WO 2003003400A1 FR 0202043 W FR0202043 W FR 0202043W WO 03003400 A1 WO03003400 A1 WO 03003400A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- electrodes
- pair
- conductors
- supply
- Prior art date
Links
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
- H01J11/46—Connecting or feeding means, e.g. leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/18—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/46—Connecting or feeding means, e.g. leading-in conductors
Definitions
- the invention relates to the connection of a plasma display panel to means for supplying and controlling this panel.
- the document JP 2000-089723 - HITACHI - describes an image display device, in particular for television, comprising a metal support plate 1, generally made of aluminum, supporting, on a face, an AC plasma discharge panel, and, on the other face, at least one printed circuit board 2 supporting means 13, 14 for supplying and controlling the discharges of said panel.
- the plasma panel itself comprises a front panel 3 and a rear panel 4 providing between them plasma discharge zones, and is provided, between these panels: with at least one first network of electrodes used in particular for maintaining discharges by applying voltage pulses between adjacent electrodes 7, 8 of two different series of electrodes of this first network and of a second network of discharge addressing electrodes (not shown), crossing the electrodes of the first network so as to form at their intersections and between the slabs 3, 4 discharge spaces.
- the connection ends of the electrodes of one series are all located on an edge 5 opposite to that 6 on which are all the connection ends of the electrodes of the other series.
- the supply circuit of each pair of adjacent electrodes 7, 8 of two different series forms a current loop from the supply and control means passing through a first electrode 7 ' then the second electrode 8 of the pair .
- the rear plate 4 of the plasma panel is fixed to the metal support plate 1 using an adhesive layer 16 of sufficient thickness to compensate for the difference in coefficient of thermal expansion between the plate and the plate. ; the adhesive material of this layer 1 is adapted in a manner known per se to ensure the thermal transfer of the calories dissipated in the panel in operation towards the plate 1 which, because it is metallic, has a better thermal coefficient d exchange with the air circulating in the housing 20.
- the document JP11-041545 - FUJITSU - also describes an image display device of this type where, specifically, the printed circuit board 2, which supports the supply and control means, extends over the whole of the surface of the panel and is directly bonded to the support plate 1 so as to shorten the connections between the ends of the electrodes on the edges of the panel and the supply and control means on either side of the support plate 1 ; no cross conductor is inserted between the panel and the support plate.
- Electrodes 7, 8 of two different series of electrodes of this first network there is therefore a succession of sustaining discharge zones, which generally correspond to a line of pixels or elements of the image to be displayed; this network of electrodes can also be used for addressing in cooperation with the electrodes of the second network; thus, the electrodes of the first series can be holding and addressing electrodes, and the electrodes of the second series are then electrodes used only for holding.
- These electrodes of the first network are generally coplanar.
- This holding network generally has only two series of electrodes so that the adjacent electrodes 7, 8 of different series are grouped in pairs; according to other variants, the first network can have three series and the coplanar electrodes are then associated in triads.
- the holding electrodes 7, - 8 of the first network are generally arranged on the internal face of the front panel 3; according to a variant, they can be arranged on the internal face of the rear panel 4.
- the means 13, 14 for supplying and controlling the discharges generally comprise: - power supply means suitable for generating series of pulses of high electric voltage, generally greater than 100 V; switching means of different electrodes (or “drivers” "in English) adapted to apply said voltage pulses to the electrodes selected by the control means.
- the first network of electrodes 7, 8 is used for maintaining discharges, it is in this network that most of it is dissipated - electrical power necessary for viewing the images, and it is therefore in this network that significant electrical losses can occur.
- each pair of electrodes 7, 8 forms a current loop starting from the supply and control means 13 passing through a first conductor 11 passing through d side to side of the support plate 1, a first electrode 7 then, through the succession of discharge zones served by this pair, the second electrode 8 of the pair, a second conductor 12 passing in the opposite direction from one side to the other of the support plate 1, a third conductor 21 passing from one edge to the other opposite of the support plate 1, until it closes on the means 13 for supplying and ordered.
- the supply circuit for each pair of electrodes 7, 8 also forms a current loop in the opposite direction which closes here on supply and control means 14 positioned opposite to the preceding means 13 on the support plate 1. •
- the conventional mode shown diagrammatically in FIG. 2, of connecting the electrodes of the panel situated on one face of the support plate 1 to the supply means 13, 14 situated on the other face has the following drawbacks: - the current loop formed by the supply circuit of each pair of electrodes 7, 8 surrounds the metal support plate 1 and generates in this plate significant losses by
- transverse conductor 21 passing from one edge to the other opposite of the support plate 1 is located here on the same side of the support plate 1 as the supply and control means 13, 14; according to a variant described in document EP1065694 - SAMSUNG, this transverse conductor may be located on the same inner side of the slab 3, which carries the electrodes, that is, to say the side opposite the means 13, supply and 14 control relative to the support plate 1 (see conductor 12'a in FIG.
- the first conductor 11 and the second conductor 12, which both pass from one side to the other of the plate support 1, are arranged here at the same edge 5 of the panel.
- the object of the invention is to remedy simultaneously all of the drawbacks of the solution represented in FIGS. 1 and 2 and to that represented in FIG. 3.
- an image display device comprising:
- a metal support plate supporting, on its front face, a plasma discharge panel, and, on its rear face, means for supplying and controlling the discharges of said panel,
- - Said plasma panel itself comprising a front panel and a rear panel providing between them plasma discharge zones, and, between these panels, at least one first network of electrodes serving in particular for maintaining discharges by application of voltage pulses between adjacent electrodes of two different series of electrodes of this first network, where the connection ends of the electrodes of a series open on an opposite edge of the panel to that on which the connection ends of the electrodes of the other series, characterized in that the connection ends of one of the series of electrodes opening onto an edge of the panel are connected to the supply and control means by means of transverse electrical conductors which are inserted between said rear slab and said metal plate and which extend from said ends to the opposite edge of the panel.
- the network of electrodes located between the slabs is generally placed on the internal face of one of the slabs, generally the front slab; the electrodes are generally covered with a dielectric layer; instead of being arranged on the internal face, at least one of the series of electrodes can be placed between the slabs in the thickness of barriers delimiting the discharge zones of the panel.
- Electrodes of the same series are connected to the supply and control means by means of the same transverse conductor.
- the supply circuit of each pair of adjacent electrodes of two different series forms a current loop from the supply and control means passing through a first electrode and then the second electrode of the pair; thanks to the invention, the current loop of the supply circuit of each pair of the panel does not surround the metal plate, unlike the solutions described in documents JP 2000-08893 and JP11-041545; this limits eddy current losses in the metal plate while obtaining identical impedance discharge zones between the adjacent electrodes over their entire length; losses are thus limited without degrading the quality of image display.
- transverse conductors being inserted according to the invention between the rear panel of the panel and the support plate, it is no longer necessary to offset them outside the light emission zone as in the document EP1065694 already cited, which allows to position them so as to advantageously limit the vertical section of the current loops of the different pairs of electrodes and the associated drawbacks. Thanks to the transverse conductors, all the supply of the electrodes is brought to the same edge of the panel so that it is then possible, as described in the invention JP 2000-089723 as shown in FIG. 3 below, to connect on the same edge of the panel all the electrodes of said network to the supply and control means; the advantage of this arrangement is that a single power supply can, without disadvantage, be used for all the alternations of the holding pulses.
- transverse conductors are preferably grouped into several plies of conductors each located at a position corresponding approximately to the average position of the electrodes to which the conductors of this ply are connected; as these electrodes generally correspond to lines of the panel, this position generally corresponds to a height on the panel; in the case of the use of 3 layers, the first would for example be positioned at 1/6 of the height of the panel, the second for example at half the height, and the third for example at 5/6 of the height .
- each panel conductor preferably positioned on the panel connected to a single electrode corresponding to a pair of adjacent electrodes at approximately the same height as said pair; preferably, these transverse electrical conductors then form a single conductive sheet inserted between the rear panel and the metal plate.
- this conductive sheet or these conductive sheets also serve as a means of fixing the panel to said metal support plate; for example, one or more plies having two adhesive faces may be used for this purpose; the thickness of the conductive sheet advantageously makes it possible to absorb the differences in thermal expansion between the rear panel of the panel and the metal support plate.
- the supply circuit of each pair comprising, starting from the supply and control means, a pair of supply conductors each of which is connected to an electrode of the pair
- the device according to the invention comprises common mode filtering means surrounding each pair of conductors.
- the common mode filter is adapted in a manner known per se to reduce the transmission of high frequency radio interference from electronic supply and control means and transmitted in common mode to the plasma panel.
- these common-mode filtering means comprise a tube made of ferromagnetic material surrounding this pair of supply conductors. During the operation of the panel, at the location of this core, the currents flowing in each conductor of the same pair are opposite, which allows this ferromagnetic tube to act as a filter in common mode and to reduce the transmission of high frequency radio interference from the electronic supply and control means and transmitted to the plasma panel.
- these so-called common mode filtering means are located at the edge of the panel where all the supply conductors of the electrodes open.
- the plasma panel also comprises a second network of electrodes for addressing the discharges, crossing the electrodes of the first network at the discharge zones of the panel.
- FIG. 2A and 2B already described, schematically represent the components and electrical connections of a device according to the prior art, with, in the upper part, a front view of a pair of holding electrodes on the panel of a plasma panel, and, in the lower part, a sectional view of the panel support plate and of the supply and control means of the electrodes.
- FIGs 3A and 3B already described, show, in the same way as in Figures 2A and 2B, another connection diagram as described in document JP 2000-089723;
- - Figure 4 illustrates a connection diagram according to a preferred embodiment of the invention, where the entire display device is shown in section except the front panel which is shown in perspective to show the two holding electrodes d 'the same pair.
- the front panel 3 is provided with a network of pairs of coplanar holding electrodes 7, 8, one of the electrodes of each pair also serving for addressing;
- the rear panel 4 is provided with a network of addressing electrodes 18; the connection ends of the electrodes 7 of a pair 7, 8 being, as in the prior art, situated on an edge 5 of the panel and connected to the power supply 13 'via the connection means 11, the connection ends of the other electrode 8 of this pair 7, 8 are located on the opposite edge 6 of the panel; the connection end of this electrode 8 opening onto the edge 6 of the panel is connected to the power supply 13 ′ by means of conventional connection means 12 for the end of the electrodes and a transverse electrical conductor 21 ′ placed between the front face of the metal plate 1 and the external face of the rear plate 4; this conductor 21 'extends from one edge 6 to the other 5 of the panel.
- the device illustrated in FIG. 4 also includes common-mode filtering means 15 surrounding each pair of conductors supplying a pair of electrodes 7, 8, here a tube made of ferromagnetic material implanted at the edge 5 of the panel, where they open out. all the supply conductors of the electrodes, namely the end 22 of the transverse supply conductor 21 'of the electrode 8 and the connection means 11 to the electrode 7.
- the current produced by the power supply 13 ′ leaves from one of its two terminals, passes through the connection means 11 at the end of the electrode 7, then passes through the panel between the electrodes 7 and 8 of the same pair, to come out at the other edge 6 of the panel by the connection means 12 at the end of the electrode 8 and returns to the other terminal of the generator 13 ' via the transverse connector 21 ', thus constituting a current loop; to implement the invention in this particular embodiment, it results in particular:
- each transverse conductor 21 ′ connected to an electrode 8 corresponding to a pair of electrodes 7, 8 adjacent approximately at the same height as said pair.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003509484A JP4264346B2 (ja) | 2001-06-29 | 2002-06-14 | 画像表示装置 |
KR1020037016865A KR100865681B1 (ko) | 2001-06-29 | 2002-06-14 | 이미지 디스플레이 디바이스 |
DE60226739T DE60226739D1 (de) | 2001-06-29 | 2002-06-14 | Verfahren zum verbinden einer plasmatafel mit ihrer elektrischen versorgung in einer vorrichtung zum sichtbarmachen von bildern |
US10/481,725 US7224330B2 (en) | 2001-06-29 | 2002-06-14 | Method of connecting a plasma panel to the electrical power supply therefor in an image display device |
EP02745533A EP1410413B1 (fr) | 2001-06-29 | 2002-06-14 | Mode de connexion d'un panneau a plasma a son alimentation electrique dans un dispositif de visualisation d'images |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/08626 | 2001-06-29 | ||
FR0108626A FR2826765A1 (fr) | 2001-06-29 | 2001-06-29 | Mode de connexion d'un panneau a plasma a son alimentation electrique dans un dispositif de visualisation d'images |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003003400A1 true WO2003003400A1 (fr) | 2003-01-09 |
Family
ID=8864931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002043 WO2003003400A1 (fr) | 2001-06-29 | 2002-06-14 | Mode de connexion d'un panneau a plasma a son alimentation electrique dans un dispositif de visualisation d'images |
Country Status (8)
Country | Link |
---|---|
US (1) | US7224330B2 (fr) |
EP (1) | EP1410413B1 (fr) |
JP (1) | JP4264346B2 (fr) |
KR (1) | KR100865681B1 (fr) |
CN (1) | CN1307676C (fr) |
DE (1) | DE60226739D1 (fr) |
FR (1) | FR2826765A1 (fr) |
WO (1) | WO2003003400A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006079084A (ja) * | 2004-09-07 | 2006-03-23 | Lg Electronics Inc | プラズマディスプレイ装置 |
CN100458873C (zh) * | 2003-08-05 | 2009-02-04 | 汤姆森等离子体公司 | 图像显示设备中等离子体板对其电源的连接 |
US7619590B2 (en) | 2003-08-27 | 2009-11-17 | Lg Electronics Inc. | Plasma display panel and module thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10118286A1 (de) * | 2001-04-12 | 2002-10-17 | Philips Corp Intellectual Pty | Plasmabildschirm |
FR2858709A1 (fr) | 2003-08-07 | 2005-02-11 | Thomson Plasma | Circuit de commande d'un panneau de visualisation au plasma |
WO2008059827A1 (fr) | 2006-11-15 | 2008-05-22 | Panasonic Corporation | Procédé de dopage de plasma |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1141545A (ja) * | 1997-07-18 | 1999-02-12 | Fujitsu General Ltd | プラズマ表示ユニット |
JP2000133140A (ja) * | 1998-10-23 | 2000-05-12 | Nec Corp | プラズマ表示パネル |
EP1065694A1 (fr) * | 1999-06-30 | 2001-01-03 | Samsung SDI Co. Ltd. | Panneau d'affichage à plasma et procédé de commande dudit panneau |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326182A1 (de) * | 1983-07-20 | 1985-01-31 | Siemens AG, 1000 Berlin und 8000 München | Gasentladungsanzeigevorrichtung |
JPS6465694A (en) * | 1987-09-07 | 1989-03-10 | Omron Tateisi Electronics Co | Display device for message reception |
GB9813327D0 (en) * | 1998-06-19 | 1998-08-19 | Superion Ltd | Apparatus and method relating to charged particles |
JP2000089723A (ja) * | 1998-09-17 | 2000-03-31 | Hitachi Ltd | プラズマディスプレイパネル及びその駆動回路並びにプラズマディスプレイ装置 |
US6118214A (en) * | 1999-05-12 | 2000-09-12 | Matsushita Electric Industrial Co., Ltd. | AC plasma display with apertured electrode patterns |
US6662793B1 (en) * | 1999-09-15 | 2003-12-16 | Knite, Inc. | Electronic circuits for plasma-generating devices |
FR2858707A1 (fr) * | 2003-08-05 | 2005-02-11 | Thomson Plasma | Connexion d'un panneau au plasma a son alimentation electrique dans un dispositif de visualisation d'images |
-
2001
- 2001-06-29 FR FR0108626A patent/FR2826765A1/fr active Pending
-
2002
- 2002-06-14 WO PCT/FR2002/002043 patent/WO2003003400A1/fr active IP Right Grant
- 2002-06-14 KR KR1020037016865A patent/KR100865681B1/ko not_active IP Right Cessation
- 2002-06-14 DE DE60226739T patent/DE60226739D1/de not_active Expired - Lifetime
- 2002-06-14 US US10/481,725 patent/US7224330B2/en not_active Expired - Fee Related
- 2002-06-14 JP JP2003509484A patent/JP4264346B2/ja not_active Expired - Fee Related
- 2002-06-14 CN CNB028132084A patent/CN1307676C/zh not_active Expired - Fee Related
- 2002-06-14 EP EP02745533A patent/EP1410413B1/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1141545A (ja) * | 1997-07-18 | 1999-02-12 | Fujitsu General Ltd | プラズマ表示ユニット |
JP2000133140A (ja) * | 1998-10-23 | 2000-05-12 | Nec Corp | プラズマ表示パネル |
EP1065694A1 (fr) * | 1999-06-30 | 2001-01-03 | Samsung SDI Co. Ltd. | Panneau d'affichage à plasma et procédé de commande dudit panneau |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 08 6 October 2000 (2000-10-06) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100458873C (zh) * | 2003-08-05 | 2009-02-04 | 汤姆森等离子体公司 | 图像显示设备中等离子体板对其电源的连接 |
US7619590B2 (en) | 2003-08-27 | 2009-11-17 | Lg Electronics Inc. | Plasma display panel and module thereof |
JP2006079084A (ja) * | 2004-09-07 | 2006-03-23 | Lg Electronics Inc | プラズマディスプレイ装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20040015288A (ko) | 2004-02-18 |
EP1410413B1 (fr) | 2008-05-21 |
US20040169472A1 (en) | 2004-09-02 |
US7224330B2 (en) | 2007-05-29 |
FR2826765A1 (fr) | 2003-01-03 |
DE60226739D1 (de) | 2008-07-03 |
KR100865681B1 (ko) | 2008-10-29 |
CN1522455A (zh) | 2004-08-18 |
CN1307676C (zh) | 2007-03-28 |
JP4264346B2 (ja) | 2009-05-13 |
EP1410413A1 (fr) | 2004-04-21 |
JP2004530951A (ja) | 2004-10-07 |
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