EP1215649A2 - Panneau d'affichage au plasma - Google Patents

Panneau d'affichage au plasma Download PDF

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Publication number
EP1215649A2
EP1215649A2 EP01000718A EP01000718A EP1215649A2 EP 1215649 A2 EP1215649 A2 EP 1215649A2 EP 01000718 A EP01000718 A EP 01000718A EP 01000718 A EP01000718 A EP 01000718A EP 1215649 A2 EP1215649 A2 EP 1215649A2
Authority
EP
European Patent Office
Prior art keywords
rear wall
cells
electrodes
plasma screen
arrangement
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.)
Granted
Application number
EP01000718A
Other languages
German (de)
English (en)
Other versions
EP1215649A3 (fr
EP1215649B1 (fr
Inventor
Matthias c/o Philips Corp.Int.Prop. GmbH Wendt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Philips Corporate Intellectual Property GmbH
Koninklijke Philips Electronics NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Intellectual Property and Standards GmbH, Philips Corporate Intellectual Property GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP1215649A2 publication Critical patent/EP1215649A2/fr
Publication of EP1215649A3 publication Critical patent/EP1215649A3/fr
Application granted granted Critical
Publication of EP1215649B1 publication Critical patent/EP1215649B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/313—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being gas discharge devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation

Definitions

  • the present invention relates to an arrangement with a plasma screen.
  • the object of the present invention is to provide the circuits and power supplies Control of such a plasma screen to improve the radiation electromagnetic waves is reduced and additional shielding measures are superfluous.
  • the object is achieved in a first way in that Arrangement with a plasma screen, which is between a viewer facing front translucent pane and a rear wall cells for generating pixels and which in the areas opposite outer edges of the rear wall for contacting the cells has electrical contacts, which by means of largely parallel current leads with arranged on the outside of the rear wall facing away from the cells electronic circuits of the type connected to the power supplies electrically isolated ends in a narrow contact area where an electrical contact between the power supplies on the one hand and the electrical circuits on the other will be produced.
  • the Power leads to the connections of the electrodes of the plasma display do not like hitherto customarily only present in the edge areas of the plasma screen, but instead lead them over the entire back of the plasma screen and come from both sides in a narrow contact area perpendicular to the current leads.
  • This Area of the plasma screen prevents antenna-shaped radiation from electromagnetic fields because the current leads come from both sides end electrically separated immediately next to each other.
  • the radiated electromagnetic fields of the Power leads to the electrodes with the fields on the inside of the current wall runs and ideally lift each other on.
  • the Manufacture power supplies inexpensively and technically simply by clicking on be applied to the back of the plasma screen.
  • the embodiment according to claim 3 allows the reuse of the known existing Connections via flexible lines to a shield according to the invention To achieve claim 1.
  • the present object is achieved in a second way by the subject matter of claim 4 solved.
  • the current paths to the contact points of the electrodes can also be shortened in this way, by the circuits for controlling the pixels directly on the outside of the rear wall of a plasma screen are mounted. This will make the The leads to the electrode connections are shortened again.
  • common buffer capacitors the current paths between the electronic circuits for the driver stages of the X electrodes and the Y electrodes. Together with the Design according to claim 1 is a particularly effective suppression of the radiation electromagnetic waves possible. At the same time is a solution with common ones Buffer capacitors much cheaper than with separate buffer capacitors for each Driver stage.
  • an arrangement according to the invention mainly consists of the actual plasma screen 3, on the back of which there are power leads 2, which the plasma screen 3 with the electronic circuits for controlling the Connect the pixels of the plasma screen 3.
  • the electronic circuits exist among other things from the two driver stages 6, 7, which are the two different Control electrode groups, the X electrodes and the Y electrodes.
  • the driver stages get their electricity from a supply module 8, for example. a switching power supply.
  • the pixels are selected by means of further circuits 4, 9, the circuit 4 selects the rows of the plasma screen 3 and the circuit 9 selects the columns.
  • the pixels are selected by the two Circuits 4, 9 depending on the image information present. These are from provided a circuit 5 for image processing.
  • a pixel If a pixel is activated, the pixel lights up and flows through the Electrodes and the current leads 2 and through the current leads between the Contacts 13 and the individual electrodes of the pixels are relatively high and above all high frequency currents. In doing so, electromagnetic waves from the current-carrying Compounds 2 emitted. These are recognizable in Figure 2 by thick black lines made, while only weak currents flow in the dashed lines, their electromagnetic Fields are negligible. The high currents span with the associated backflows on an area, with a large area having a high electromagnetic Radiation means. Therefore, with the present invention, these Surfaces are reduced so that the electromagnetic fields of the flowing currents and largely compensate for the backflowing currents. From a certain distance from the plasma screen 3, the fields are almost as good.
  • the contact area 14 can also be shifted from the center, but it is important that it moves over the whole Width of the rear wall 11 extends transversely to the power supply lines 2.
  • the current leads 2 are used directly as conductive Coating applied to the back of the rear wall 11.
  • the back one Wall 11 is currently made of glass for structural reasons, but can also be made of one temperature-resistant other material, since transparency is not required and on the contrary, light from the pixels also lets through to the rear, which is undesirable is.
  • the new construction of the power supply lines 2 offers the decisive advantage. While in conventional plasma screens the driver stages 6, 7 for the X and the Y electrodes are housed on separate boards and during voltage transitions the currents are conducted via the earth return, the invention does not Arrangement on such a current supply via the earth return. Furthermore, the Driver boards 6, 7 arranged centrally and via power supplies 2 with the X / Y electrodes connected. This can be achieved in that, as in FIG Power supply lines 2 (here flexible cables) for the X / Y electrodes up to the middle of the Plasma screen 3 are performed on the back. By means of separate Plug connections are connected to driver stages 6, 7 there.
  • driver stages 6, 7 In order to further shorten the current paths, it makes sense to use the driver stages 6, 7 on one unite common circuit board. This can be seen in Figure 3. This is the radiation electromagnetic waves due to transfer currents between the driver stages 6, 7 decreased. Furthermore, the current leads 2 for the X / Y electrodes can now can be connected to driver stages 6, 7 via a common connector. At the same time, the two driver stages 6, 7 can use common buffer capacitors 1 use, which saves half of the capacitors.
  • a further improvement is possible in that the circuit 4 for selecting the No longer line up on the flexible lines of the power supply lines 2, but directly the rear wall 11 of the plasma screen 3 are mounted.
  • the power supplies 2 between Y electrodes and the circuit 4 for selecting the rows and its Connection to the X / Y driver stages 6, 7 can then be made by a conductive layer on the rear wall 11 of the plasma screen 3 as in Figure 4b;
  • Figure 4a shows the conventional supply lines 2.
  • the connection of the plasma screen 3 to the driver stages 6, 7 is inexpensive due to connectors and contact springs or other conductive flexible materials possible, the direct contact with the conductive layer of the Have power leads 2. In addition to reducing the radiation area, such offers Arrangement still has the advantage of increased magnetic coupling, which the Current distribution of the return flows improved.
  • the power supply leads 2 each individual X electrode and each individual Y electrode on the front Glass pane 10 separated rearwards onto the outside of the rear glass pane 11 of the Plasma screen 3 and continue to about the middle, where they with the electronic Circuits (driver stages) 4, 6, 7 can be contacted.
  • This is done in the same way with a narrow contact area 14 over the entire width as in the embodiment according to Claim 1, shown in Figure 6.
  • the stage 4 for controlling the rows can also housed together with the X / Y driver stages 6, 7 on a common circuit board his. This embodiment can be seen in Figure 5.
  • a transparent plastic pane can of course also be used or foil can be used if the stability of the entire plasma screen 3 is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP01000718A 2000-12-12 2001-12-06 Panneau d'affichage au plasma Expired - Lifetime EP1215649B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10061722A DE10061722A1 (de) 2000-12-12 2000-12-12 Plasmabildschirm
DE10061722 2000-12-12

Publications (3)

Publication Number Publication Date
EP1215649A2 true EP1215649A2 (fr) 2002-06-19
EP1215649A3 EP1215649A3 (fr) 2002-11-27
EP1215649B1 EP1215649B1 (fr) 2006-09-13

Family

ID=7666733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01000718A Expired - Lifetime EP1215649B1 (fr) 2000-12-12 2001-12-06 Panneau d'affichage au plasma

Country Status (7)

Country Link
US (1) US6753653B2 (fr)
EP (1) EP1215649B1 (fr)
JP (1) JP2002278468A (fr)
KR (1) KR20020046216A (fr)
CN (1) CN1365133A (fr)
DE (2) DE10061722A1 (fr)
TW (1) TW538396B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2858709A1 (fr) * 2003-08-07 2005-02-11 Thomson Plasma Circuit de commande d'un panneau de visualisation au plasma
KR100627412B1 (ko) * 2005-01-19 2006-09-22 삼성에스디아이 주식회사 플라즈마 표시 장치 및 그 구동 방법
CN102014602B (zh) * 2010-12-17 2013-03-06 惠州市科信达电子有限公司 一种提高大功率器件及其模组电磁兼容性能的方法
JP6694292B2 (ja) * 2016-02-16 2020-05-13 シチズン時計株式会社 Ｌｅｄモジュール

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0428145Y2 (fr) * 1987-09-09 1992-07-07
JP2751951B2 (ja) * 1995-08-28 1998-05-18 日本電気株式会社 表示パネルの駆動回路
JP3565650B2 (ja) * 1996-04-03 2004-09-15 富士通株式会社 Ａｃ型ｐｄｐの駆動方法及び表示装置
JPH1141545A (ja) * 1997-07-18 1999-02-12 Fujitsu General Ltd プラズマ表示ユニット
JP3929605B2 (ja) 1998-06-24 2007-06-13 クボタ松下電工外装株式会社 塗装装置
JP3659810B2 (ja) * 1998-08-05 2005-06-15 パイオニア株式会社 二次元表示装置の駆動モジュール取付構造
US7161780B2 (en) 2003-02-03 2007-01-09 Leviton Manufacturing Co., Inc. Circuit interrupting device with single throw, double mode button for test-reset function

Also Published As

Publication number Publication date
EP1215649A3 (fr) 2002-11-27
US20020070907A1 (en) 2002-06-13
EP1215649B1 (fr) 2006-09-13
DE50110998D1 (de) 2006-10-26
DE10061722A1 (de) 2002-06-13
US6753653B2 (en) 2004-06-22
CN1365133A (zh) 2002-08-21
TW538396B (en) 2003-06-21
KR20020046216A (ko) 2002-06-20
JP2002278468A (ja) 2002-09-27

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