WO2006137659A1 - Dispositif d'affichage electroluminescent organique et procede de commande de celui-ci - Google Patents

Dispositif d'affichage electroluminescent organique et procede de commande de celui-ci Download PDF

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Publication number
WO2006137659A1
WO2006137659A1 PCT/KR2006/002336 KR2006002336W WO2006137659A1 WO 2006137659 A1 WO2006137659 A1 WO 2006137659A1 KR 2006002336 W KR2006002336 W KR 2006002336W WO 2006137659 A1 WO2006137659 A1 WO 2006137659A1
Authority
WO
WIPO (PCT)
Prior art keywords
organic light
display device
emitting display
light
emitting
Prior art date
Application number
PCT/KR2006/002336
Other languages
English (en)
Inventor
Seung Rok Shin
Hyun Ha Hwang
Original Assignee
Lg Innotek Co., Ltd
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 Lg Innotek Co., Ltd filed Critical Lg Innotek Co., Ltd
Publication of WO2006137659A1 publication Critical patent/WO2006137659A1/fr

Links

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
    • G09G3/22—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
    • G09G3/30—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 electroluminescent panels
    • G09G3/32—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • 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
    • G09G3/30—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 electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0248—Precharge or discharge of column electrodes before or after applying exact column voltages
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • G09G2310/063—Waveforms for resetting the whole screen at once

Definitions

  • the present invention relates to an organic light-emitting display device and a driving method thereof.
  • an organic light-emitting display device is a self-luminous display device electrically exciting a phosphorous organic compound to emit light and supplying a current to an NxM matrix consisting of organic light-emitting diodes (OLEDs) to drive the NxM matrix of OLEDs and thus display an image.
  • OLEDs organic light-emitting diodes
  • a method for driving the OLEDs includes a passive matrix method and an active matrix method using transistors.
  • the passive matrix method an anode and a cathode are perpendicularly formed, and a line is selected to drive an organic light-emitting display device.
  • the active matrix method transistors and condensers are provided, and a voltage supplied through the transistors is maintained to drive an organic light-emitting display device.
  • Fig. 1 is a view explaining a method of driving an organic light-emitting display device according to a related art.
  • the organic light-emitting display device applies a driving control signal including a reset signal and a scan signal to each line in order to display an image frame. That is, a driving control signal applied to each line consists of a reset signal and a scan signal, and the reset signal has a time interval of several D to several hundred D.
  • the reset signal is a signal for pre-charging each line to which a driving control signal is applied, and the scan signal is applied to each line to display an image.
  • a related art organic light-emitting display device applies N reset signals and N scan signals to a vertical synchronization period (field or subfield) displaying an image frame assuming that a light-emitting unit including a plurality of organic light-emitting devices has N lines.
  • a signal for displaying an actual image is a scan signal
  • an organic light-emitting device does not emit light during a period (N x reset signal time) where a reset signal for pre-charging is applied.
  • the present invention provides an organic light-emitting display device and a driving method thereof, capable of improving brightness for displaying an image.
  • the present invention provides a mobile communication terminal having an organic light-emitting display device that can improve brightness for displaying an image.
  • the present invention provides an organic light-emitting display device including: a light-emitting unit having a plurality of organic light-emitting devices (OLEDs) to emit light; a controller collectively transmitting reset signals to all lines and sequentially transmitting scan signals for respective lines in order to display each image frame when transmitting driving control signals each including a reset signal and a scan signal for displaying an image frame to the light-emitting unit.
  • OLEDs organic light-emitting devices
  • the present invention provides a method of driving an organic light-emitting display device when transmitting a driving control signal having a reset signal and a scan signal for displaying an image frame to a light-emitting unit including a plurality of OLEDs, the method including: collectively transmitting reset signals to all lines in order to display each image frame; and sequentially transmitting scan signals for respective lines.
  • the present invention provides a mobile communication terminal including: an organic light-emitting display device including a light-emitting unit having a plurality of organic light-emitting devices (OLEDs) to emit light, and a controller collectively transmitting reset signals to all lines and sequentially transmitting scan signals for respective lines in order to display each image frame when transmitting driving control signals including reset signals and scan signals for displaying an image frame to the light-emitting unit; a communication element performing communication with the outside; and a control unit controlling the communication element and image displaying by the organic light-emitting display device.
  • OLEDs organic light-emitting devices
  • the present invention has an advantage of securing a scan signal time for displaying an image and thus improving brightness by reducing a reset signal time of each image frame.
  • the present invention also has an advantage of increasing a frequency of a vertical synchronization time and thus reducing flicker by reducing a reset signal time of each image frame.
  • FIG. 1 is a view explaining a method of driving an organic light-emitting display device according to a related art
  • FIG. 2 is a schematic block diagram of an organic light-emitting display device according to the present invention.
  • FIG. 3 is a view explaining a method of driving an organic light-emitting display device according to the present invention.
  • FIG. 4 is a view illustrating in detail a reset signal period in a method of driving an organic light-emitting display device according to the present invention.
  • FIG. 2 is a schematic block diagram of an organic light-emitting display device according to the present invention.
  • the organic light-emitting display device includes a light- emitting unit 23 having a plurality of organic light-emitting devices (OLEDs), and a controller 21 supplying a driving control signal to the light-emitting unit 23.
  • OLEDs organic light-emitting devices
  • the light-emitting unit 23 may consist of a plurality of OLEDs, and emit light in an entire area or partial area under control of the controller 21.
  • the controller 21 transmits a driving control signal including a reset signal and a scan signal for displaying an image frame to the light-emitting unit 23.
  • Fig. 3 is a view explaining a method of driving an organic light-emitting display device according to the present invention.
  • a vertical axis is a vertical line of a panel constituting an organic light-emitting display device
  • a horizontal axis is a time axis. Since the organic light-emitting display device emits light during a scan period, a reset period within one line does not contribute brightness.
  • the controller 21 collectively transmits reset signals to all lines in order to display each image frame as illustrated in Fig. 3. Also, the controller 21 sequentially transmits scan signals for respective lines.
  • the controller 21 collectively applies reset signals to all lines initially, instead of applying reset signals to all the lines, respectively, when applying driving control signals to the light-emitting unit 23 during each vertical synchronization period. Also, the controller 21 sequentially applies scan signals for displaying an actual image for each line to the light-emitting unit 23.
  • reset signals are simultaneously applied to all the lines, and only a scan signal for each line is applied without a reset signal during a scan signal period.
  • a reset signal period contained in each related art line scan signal period can be removed during one frame (or subframe). [28] Accordingly, a time assigned for one line can be fully used for displaying an image.
  • a scan signal period where the light-emitting unit is driven extends for displaying an image, brightness can be improved even more when an image is displayed.
  • the reset signal consists of an erase period and a pre-charge period.
  • Fig. 4 is a view illustrating in detail a reset signal period in a method of driving an organic light-emitting display device according to the present invention.
  • the erase period and pre-charge period may be simultaneously and collectively applied to all lines. Also, according to the present invention, the erase period and pre-charge period may be differently applied for each line.
  • An operation for equalizing electrical potential of a pixel capacitor and a parasitic capacitor is performed during the erase period. Also, an operation for minimizing current or voltage distortion caused by the pixel capacitor and parasitic capacitor is performed during the pre-charge period.
  • the reset signal has a time interval of several D to several hundred D, and reset signals are simultaneously applied to all the lines.
  • a scan signal period where an image is displayed can extend as the time occupied by the reset signal period reduces. Therefore, according to the present invention, brightness may be improved as much as the scan signal period extends.
  • a frequency of a vertical synchronization signal can increase. Therefore, according to the present invention, a new driving method capable of reducing flicker by increasing a frequency of a vertical synchronization signal can be provided.
  • an organic light-emitting display device having the above-described construction may be used for a mobile communication terminal and can display a high- quality image by enhancing brightness for image display.
  • an organic light- emitting display device having the above-described construction can be used for image display devices such as computer monitors, televisions, and electronic display boards, and can display a high-quality image by enhancing brightness for image display.
  • the mobile communication terminal may include the above-described organic light- emitting display device, a communication element performing communication with the outside, and a controller controlling the communication element and displaying by the organic light-emitting display device.
  • the image display devices may include the above-described organic light-emitting display device and a controller transmitting video signals to the organic light-emitting display device.
  • An organic light-emitting display device and a driving method thereof according to the present invention have an advantage of enhancing brightness of image display.
  • an organic light-emitting display device and a driving method thereof according to the present invention have an advantage of securing a scan signal period for image display to enhance brightness by reducing a reset signal time of each image frame.
  • an organic light-emitting display device and a driving method thereof according to the present invention have an advantage of increasing a frequency of a vertical synchronization time to reduce flicker by reducing a reset signal time of each image frame.
  • a mobile communication terminal according to the present invention has an advantage of enhancing brightness for image display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif d'affichage électroluminescent organique. Ce dispositif comprend une unité électroluminescente composée d'une pluralité de diodes électroluminescentes organiques (OLED) conçues pour émettre de la lumière, et un contrôleur qui émet collectivement des signaux de remise à zéro à toutes les lignes et qui émet séquentiellement des signaux de balayage à des lignes respectives afin d'afficher chaque trame d'image lors de la transmission de signaux de commande, y compris des signaux de remise à zéro et des signaux de balayage, pour afficher une trame d'image sur l'unité électroluminescente.
PCT/KR2006/002336 2005-06-22 2006-06-19 Dispositif d'affichage electroluminescent organique et procede de commande de celui-ci WO2006137659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0054040 2005-06-22
KR1020050054040A KR20060134396A (ko) 2005-06-22 2005-06-22 유기발광표시장치 및 그 구동방법

Publications (1)

Publication Number Publication Date
WO2006137659A1 true WO2006137659A1 (fr) 2006-12-28

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Application Number Title Priority Date Filing Date
PCT/KR2006/002336 WO2006137659A1 (fr) 2005-06-22 2006-06-19 Dispositif d'affichage electroluminescent organique et procede de commande de celui-ci

Country Status (2)

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KR (1) KR20060134396A (fr)
WO (1) WO2006137659A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2061023A3 (fr) * 2007-11-14 2010-01-13 Sony Corporation Appareil d'affichage, procédé de commande pour l'appareil d'affichage et appareil électronique
US10898608B2 (en) 2017-02-02 2021-01-26 Nanofiber Solutions, Llc Methods of improving bone-soft tissue healing using electrospun fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101975489B1 (ko) * 2012-09-10 2019-05-08 삼성디스플레이 주식회사 표시장치 및 그 구동 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020040319A (ko) * 2000-11-24 2002-05-30 박원석 프레임 리셋을 이용한 유기 전계 발광 디스플레이구동방법
US20030052842A1 (en) * 2001-09-18 2003-03-20 Tohoku Pioneer Corporation Drive unit for a luminescence display panel
KR20040026362A (ko) * 2002-09-24 2004-03-31 엘지전자 주식회사 유기 ｅｌ 디스플레이의 구동 회로
US20050280613A1 (en) * 2004-06-18 2005-12-22 Casio Computer Co., Ltd. Display device and associated drive control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020040319A (ko) * 2000-11-24 2002-05-30 박원석 프레임 리셋을 이용한 유기 전계 발광 디스플레이구동방법
US20030052842A1 (en) * 2001-09-18 2003-03-20 Tohoku Pioneer Corporation Drive unit for a luminescence display panel
KR20040026362A (ko) * 2002-09-24 2004-03-31 엘지전자 주식회사 유기 ｅｌ 디스플레이의 구동 회로
US20050280613A1 (en) * 2004-06-18 2005-12-22 Casio Computer Co., Ltd. Display device and associated drive control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2061023A3 (fr) * 2007-11-14 2010-01-13 Sony Corporation Appareil d'affichage, procédé de commande pour l'appareil d'affichage et appareil électronique
US9286828B2 (en) 2007-11-14 2016-03-15 Joled Inc. Display apparatus, driving method for display apparatus and electronic apparatus
US10898608B2 (en) 2017-02-02 2021-01-26 Nanofiber Solutions, Llc Methods of improving bone-soft tissue healing using electrospun fibers

Also Published As

Publication number Publication date
KR20060134396A (ko) 2006-12-28

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