EP1729282A2 - Circuit de commande d'affichage et procédé de commande pour ce même circuit - Google Patents

Circuit de commande d'affichage et procédé de commande pour ce même circuit Download PDF

Info

Publication number
EP1729282A2
EP1729282A2 EP06114420A EP06114420A EP1729282A2 EP 1729282 A2 EP1729282 A2 EP 1729282A2 EP 06114420 A EP06114420 A EP 06114420A EP 06114420 A EP06114420 A EP 06114420A EP 1729282 A2 EP1729282 A2 EP 1729282A2
Authority
EP
European Patent Office
Prior art keywords
display
data
maintaining capacitor
transistor
frame
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.)
Withdrawn
Application number
EP06114420A
Other languages
German (de)
English (en)
Other versions
EP1729282A3 (fr
Inventor
Bily Wang
John Lin
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.)
Harvatek Corp
Original Assignee
Harvatek Corp
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 Harvatek Corp filed Critical Harvatek Corp
Publication of EP1729282A2 publication Critical patent/EP1729282A2/fr
Publication of EP1729282A3 publication Critical patent/EP1729282A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0257—Reduction of after-image effects

Definitions

  • the present invention relates to a display drive circuit and a drive method for the same and, more particularly, to a drive circuit and a drive method using thin-film transistors as synchronous drive components.
  • Fig. 1 is an equivalent circuit diagram of a prior art thin film transistor LCD panel and its peripheral drive circuit.
  • crisscrossing data electrodes (Y1, Y2 ... Ym) and scan electrodes (X1, X2 ... Xn) are formed on an LCD panel 1.
  • Each set of crisscrossing data electrode and scan electrode can be used to control a display device D.
  • the data electrode Y1 and the scan electrode X1 can be used to control a display device D1.
  • Each display device D is controlled by a set of crisscrossing data and scan electrodes via a drive circuit.
  • the equivalent circuit of each drive circuit is formed by connecting a thin film transistor Q for controlling entry of data and a storage capacitor C.
  • the gate and drain of the thin film transistor Q are connected to a scan electrode and a data electrode, respectively.
  • a scan signal on a scan electrode can conduct or cut off all thin film transistors Q in the same row, that is, the same scan line, thereby controlling whether a video signal on the data electrode can be written to a corresponding display device D.
  • Fig. 2 shows waveforms of scan signals in the prior art.
  • a scan drive unit 12 outputs scan signals (S1, S2 ... Sn) to the scan electrodes (X1, X2 ... Xn) based on a predetermined scanning order.
  • scan electrode has a scan signal thereon, all the thin film transistors Q in the drive circuits in the same row or on the same scan electrode conduct, while the thin film transistors Q in other rows are cut off.
  • a data drive unit 10 will send out a corresponding video signal, a gray-level value, to m display devices of that row based on the image data to be displayed.
  • the scan drive unit 12 finishes one scanning action on all n rows of scan lines, the display action of a frame is complete. Repetitively scanning all the scan electrodes (X1, X2 ... Xn) and sending out the video signal of image data can accomplish the object of continuously displaying an image.
  • the display action of a frame of the prior art LCD panel 1 is controlled by the scan signals (S1, S2 ... Sn).
  • This kind of drive control technology usually cannot effectively finish the display action of the LCD panel 1 owing to the charging and discharge transient characteristics of the thin film transistor and the storage capacitor of each drive circuit. Therefore, frame retention during frame crossover will occur, affecting the display quality of the LCD panel 1:
  • An object of the present invention is to provide a display drive circuit and a drive method for the same, in which thin film transistors are used as synchronous drive components.
  • the drive circuit of the present invention is used in an LCD panel.
  • the drive circuit comprises a first maintaining capacitor and a second maintaining capacitor.
  • Each drive circuit of the LCD panel is controlled by a first control signal.
  • Image data of a frame are temporarily stored into the first maintaining capacitor in a frame time based on scan signals, while image data of the previous frame originally stored in the second maintaining capacitor are synchronously transferred to a display unit, thereby accomplishing synchronous display actions of the LCD panel.
  • each drive circuit of the LCD panel is controlled by a second control signal.
  • Image data of the next frame are temporarily stored into the second maintaining capacitor in a frame time based on scan signals, while image data of the previous frame originally stored in the first maintaining capacitor are synchronously transferred to the display unit, thereby accomplishing synchronous display actions of the LCD panel. In this way, frames respectively stored in the first and second maintaining capacitors can be continuously and alternately output for display.
  • the present invention provides a drive circuit comprising a transistor controlled by a scan signal to capture a data signal.
  • a first charging transistor is connected to the transistor and a first maintaining capacitor, and is controlled by a first control signal to obtain the data signal and store the data signal in the first maintaining capacitor.
  • a second charging transistor is connected to the transistor and a second maintaining capacitor, and is controlled by a second control signal to obtain the data signal and store the data signal in the second maintaining capacitor.
  • a first discharge transistor is connected to the first maintaining capacitor and the display device and is controlled by the second control signal to transfer the data signal stored in the first maintaining capacitor to the display device.
  • a second discharge transistor is connected to the second maintaining capacitor and the display device, and is controlled by the first control signal to transfer the data signal stored in the second maintaining capacitor to the display device.
  • the drive circuit is alternately controlled by the first control signal and the second control signal every frame time, and performs storage or release of image data to the first maintaining capacitor and the second maintaining capacitor in an LCD panel according to scan signals.
  • first and second control signals frames respectively stored in the first and second maintaining capacitors in the LCD panel can be continuously and alternately output for display. Therefore, the present invention can solve the problem of frame retention during frame crossover owing to the charging and discharge transient characteristics of the thin film transistor and the storage capacitor.
  • Fig. 3 is an equivalent circuit diagram of an LCD panel and a peripheral drive circuit thereof according to the present invention.
  • the present invention applies to an LCD panel 2 with crisscrossing data electrodes (Y1, Y2 ... Ym). Scan electrodes (X1, X2 ... Xn) are formed thereon.
  • the data electrodes (Y1, Y2 ... Ym) are correspondingly connected to outputs of a data drive unit 24, while scan electrodes (X1, X2 ... Xn) are correspondingly connected to outputs of a scan drive unit 22.
  • Each set of crisscrossing data electrode and scan electrode can be used to control a display unit 20 according to the output of the scan drive unit 22 and the output of the data drive unit 24.
  • Each display unit 20 of the LCD panel 2 uses the drive circuit of the present invention to drive a display device D.
  • the display device D is a liquid crystal display (LCD).
  • the drive circuit of the present invention comprises a transistor Q.
  • the transistor Q is a thin film transistor (TFT).
  • the gate of the transistor Q is connected to an output of the scan drive unit 22 via a scan electrode X to receive a scan signal.
  • the drain of the transistor Q is connected to an output of the data drive unit 24 via a data electrode Y to obtain a data signal.
  • the source of the transistor Q is connected to a first charging transistor Qc 1 and a second charging transistor Qc2.
  • the first charging transistor Qc1 is also connected to a first maintaining capacitor C1, obtains the data signal according to the conduction state of the transistor Q, and is controlled by a first control signal CN1 to store the data signal to the first maintaining capacitor C1.
  • the second charging transistor Qc2 is also connected to a second maintaining capacitor C2, obtains the data signal according to the conduction state of the transistor Q, and is controlled by a second control signal CN2 to store the data signal in the second maintaining capacitor C2.
  • a first discharge transistor Qd1 is connected to the first maintaining capacitor C1 and the display device D, and is controlled by the second control signal CN2 to transfer the data signal stored in the first maintaining capacitor C1 to the display device D.
  • a second discharge transistor Qd2 is connected to the second maintaining capacitor C2 and the display device D, and is controlled by the first control signal CN1 to transfer the data signal stored in the second maintaining capacitor C2 in the display device D.
  • Scan signals (S1, S2 ... Sn) are sent out by the scan drive unit 22.
  • the scan signals (S1, S2 ... Sn) are periodically sent to each display unit 20 via the scan electrodes (X1, X2 ... Xn) of the LCD panel 2 according to a predetermined scan order.
  • the scan drive unit 22 also periodically sends out the first control signal CN1 and the second control signals CN2 to each display unit 22 to complete synchronous display actions of the LCD panel 2.
  • a scan electrode (X1, X2 ... Xn) receives a scan signal
  • the transistors Q in all the display units 20 in the same row or on the same scan electrode conduct, while the transistors Q in the other rows are cut off.
  • the first control signal CN1 is high
  • the first charging transistor Qc1 in each display unit 20 conducts. Because the transistor Q in each display unit 20 also conducts, the data signal output by the data drive unit 24 will first be temporarily stored in the first maintaining capacitors C 1 in all the display units 20 in the same row or on the same scan electrode.
  • the scan signals (S1, S2 ... Sn) sent out by the scan drive unit 22 are periodically transferred to all the display units 20 in the same row or on the same scan electrode on the LCD panel 2 via the scan electrodes (X1, X2 ... Xn) in a predetermined scan order.
  • the data signal output by the data drive unit 24 will first be temporarily stored in the first maintaining capacitors C 1 in all the display units 20 on the LCD panel 2. This is the image data of a frame.
  • the first control signal CN1 when the first control signal CN1 is high in a frame time, the first control signal CN1 simultaneously turns the first discharge transistor Qd1 on.
  • the image data of a frame already stored in the second maintaining capacitors C2 in all the display units 20 will be output to the display device D for image display.
  • the second control signal CN2 When the second control signal CN2 alternately rises to a high level after the first control signal CN1 and the first control signal CN1 drops to a low level, the second charge transistors Qc2 in all the display units 20 will be controlled to be on. Because the transistors Q in all the display unit 20 are on, the data signal output by the data drive unit 24 will first be temporarily stored in the second maintaining capacitors C2 in all the display units 20 in the same row or on the same scan electrode.
  • the scan signals (S1, S2 ... Sn) sent out by the scan drive unit 22 are periodically transferred to all the display units 20 in the same row or on the same scan electrode on the LCD panel 2 via the scan electrodes (X1, X2 ... Xn) in a predetermined scan order.
  • the second control signal CN2 is high in a frame time, the data signal output by the data drive unit 24 will first be temporarily stored in the second maintaining capacitors C2 in all the display units 20 on the LCD panel 2. This is the image data of a frame.
  • the second control signal CN2 when the second control signal CN2 is high in a frame time, the second control signal CN2 simultaneously turns the second discharge transistor Qd2 on.
  • the image data of a frame already stored in the first maintaining capacitors C1 in all the display units 20 will be output to the display device D doe image display.
  • the drive circuit of the present invention is alternately controlled by the first control signal CN1 and the second control signal CN2 every frame time, and performs storage or release of image data to the first maintaining capacitor C 1 and the second maintaining capacitor C2 in the LCD panel according to scan signals.
  • first and second control signals frames respectively stored in the first maintaining capacitor C1 and the second maintaining capacitor C2 in the LCD panel can be continuously and alternately output for display. Therefore, the present invention can solve the problem of frame retention during frame crossover owing to the charging and discharge transient characteristics of the thin film transistor and the storage capacitor.
  • a display drive method of the present invention comprises the steps of: sequentially turning a transistor in each display unit on to obtain a frame's data; sequentially storing the frame's data to a first maintaining capacitor in each display unit; and synchronously transferring a previous frame's data stored in a second maintaining capacitor in each display unit to a display device.
  • the transistors are sequentially turned on to obtain the next frame's data, the next frame's data is sequentially stored in the second maintaining capacitor in each display unit, and the frame's data stored in the first maintaining capacitor in each display unit is synchronously transferring to the display device. In this way, frames respectively stored in the first and second maintaining capacitors can be continuously output for display.
  • the present invention also provides a display drive method comprising the steps of: storing a frame's data into a first maintaining capacitor in each display unit; and synchronously transferring a previous frame's data stored in a second maintaining capacitor in each display unit to a display device. After synchronous transfer, the next frame's data is stored in the second maintaining capacitor in each display unit, and the frame's data stored in the first maintaining capacitor in each display unit is synchronously transferred to the display device.
  • the present invention can solve the problem of frame retention during frame crossover owing to the charging and discharge transient characteristics of the thin film transistor and the storage capacitor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP06114420A 2005-06-03 2006-05-23 Circuit de commande d'affichage et procédé de commande pour ce même circuit Withdrawn EP1729282A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100755464A CN100449599C (zh) 2005-06-03 2005-06-03 显示器的驱动电路及其驱动方法

Publications (2)

Publication Number Publication Date
EP1729282A2 true EP1729282A2 (fr) 2006-12-06
EP1729282A3 EP1729282A3 (fr) 2009-07-15

Family

ID=37027562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114420A Withdrawn EP1729282A3 (fr) 2005-06-03 2006-05-23 Circuit de commande d'affichage et procédé de commande pour ce même circuit

Country Status (2)

Country Link
EP (1) EP1729282A3 (fr)
CN (1) CN100449599C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102938246B (zh) * 2012-12-06 2015-12-02 深圳市华星光电技术有限公司 液晶显示器的驱动系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945972A (en) * 1995-11-30 1999-08-31 Kabushiki Kaisha Toshiba Display device
EP1026658A1 (fr) * 1998-08-03 2000-08-09 Seiko Epson Corporation Dispositif electro-optique, substrat a cet effet, dispositif electronique, et afficheur a projection
US20020021295A1 (en) * 2000-08-18 2002-02-21 Jun Koyama Liquid crystal display device and method of driving the same
US6831624B1 (en) * 1999-01-15 2004-12-14 Sharp Kabushiki Kaisha Time sequentially scanned display

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW207570B (en) * 1991-10-04 1993-06-11 Toshiba Co Ltd Method for automatically detecting drill blade of the drill bit specified for drilling hole on PC board
JPH09114421A (ja) * 1995-10-19 1997-05-02 Asahi Glass Co Ltd カラー液晶表示装置
US6476785B1 (en) * 1999-11-08 2002-11-05 Atmel Corporation Drive circuit for liquid crystal display cell
CN100435201C (zh) * 2002-11-15 2008-11-19 奇景光电股份有限公司 液晶单元结构的驱动电路及其控制方法
JPWO2005027138A1 (ja) * 2003-09-10 2007-11-08 ローム株式会社 光制御装置およびその駆動方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945972A (en) * 1995-11-30 1999-08-31 Kabushiki Kaisha Toshiba Display device
EP1026658A1 (fr) * 1998-08-03 2000-08-09 Seiko Epson Corporation Dispositif electro-optique, substrat a cet effet, dispositif electronique, et afficheur a projection
US6831624B1 (en) * 1999-01-15 2004-12-14 Sharp Kabushiki Kaisha Time sequentially scanned display
US20020021295A1 (en) * 2000-08-18 2002-02-21 Jun Koyama Liquid crystal display device and method of driving the same

Also Published As

Publication number Publication date
CN100449599C (zh) 2009-01-07
EP1729282A3 (fr) 2009-07-15
CN1873757A (zh) 2006-12-06

Similar Documents

Publication Publication Date Title
US8199095B2 (en) Display device and method for driving the same
US9613585B2 (en) Display device and method for driving the same
US9607541B2 (en) Liquid crystal display device and method for driving same
US10074333B2 (en) Display device and method for driving same
US8279150B2 (en) Method and apparatus for processing data of liquid crystal display
US7148870B2 (en) Flat-panel display device
US8013829B2 (en) Liquid crystal display having black insertion controller selecting black insertion control signals according to data stored therein and driving method thereof
US20100039363A1 (en) Gate driving circuit and display device having the same
EP1662472A2 (fr) Dispositif d'affichage à cristaux liquides
TWI277944B (en) Liquid crystal display driving methodology with improved power consumption
WO2013118644A1 (fr) Dispositif d'affichage et son procédé de commande
US20060187176A1 (en) Display panels and display devices using the same
CN107516500B (zh) Goa电路的驱动方法及驱动装置
WO2017128645A1 (fr) Circuit de pixel, son procédé d'attaque, panneau d'affichage et dispositif d'affichage
US20190206353A1 (en) Display panel and driving method therefor, and display apparatus
US8711068B2 (en) Liquid crystal display device and driving method thereof
WO2013127224A1 (fr) Circuit de pixels, procédé de commande associé, dispositif d'affichage et procédé d'affichage
US7777706B2 (en) Impulse driving apparatus and method for liquid crystal device
US7154462B2 (en) Method and apparatus for driving liquid crystal display
US20120200549A1 (en) Display Device And Drive Method For Display Device
CN100367087C (zh) 可消除影像残留的方法及其液晶显示器
EP1729282A2 (fr) Circuit de commande d'affichage et procédé de commande pour ce même circuit
US20110084948A1 (en) Lcd driver circuit and driving method thereof
EP2479746A1 (fr) Dispositif d'affichage à cristaux liquides et son procédé de commande
JP2006133673A (ja) 表示駆動装置、表示装置及び表示駆動装置の駆動制御方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100116

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566