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1. WO2011010486 - DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE

Publication Number WO/2011/010486
Publication Date 27.01.2011
International Application No. PCT/JP2010/054492
International Filing Date 17.03.2010
IPC
G09G 3/30 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for 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
22using controlled light sources
30using electroluminescent panels
G09G 3/20 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for 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
H01L 51/50 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
CPC
G09G 2300/0895
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2300Aspects of the constitution of display devices
08Active 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
088using a non-linear two-terminal element
0895having more than one selection line for a two-terminal active matrix LCD, e.g. Lechner and D2R circuits
G09G 2310/0251
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0243Details of the generation of driving signals
0251Precharge or discharge of pixel before applying new pixel voltage
G09G 2310/0262
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0262The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
G09G 2320/0238
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
02Improving the quality of display appearance
0238Improving the black level
G09G 3/2022
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for 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
2007Display of intermediate tones
2018by time modulation using two or more time intervals
2022using sub-frames
G09G 3/3225
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for 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
22using controlled light sources
30using electroluminescent panels
32semiconductive, e.g. using light-emitting diodes [LED]
3208organic, e.g. using organic light-emitting diodes [OLED]
3225using an active matrix
Applicants
  • シャープ株式会社 SHARP KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 仙田 孝裕 SENDA, Takahiro (UsOnly)
Inventors
  • 仙田 孝裕 SENDA, Takahiro
Agents
  • 島田 明宏 SHIMADA, Akihiro
Priority Data
2009-17214923.07.2009JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE
(FR) DISPOSITIF D'AFFICHAGE ET PROCÉDÉ DE COMMANDE DE DISPOSITIF D'AFFICHAGE
(JA) 表示装置および表示装置の駆動方法
Abstract
(EN)
An erasure TFT (13) is provided between the gate terminal of a driving TFT (11) and a control line (Ei), and the gate terminal of the erasure TFT (13) is connected to the control line (Ei). At the time of erasing data, a potential equal to or higher than the total of the potential of a power supply line (Vp) and the threshold voltage of the erasure TFT (13) is applied to the control line (Ei) until data writing is started, and the organic EL element (15) is controlled to be in a state wherein light is not emitted. The high level potential to be applied to a control line (Wi) is the potential with which a write TFT (12) maintains the off-state when the potential applied to a data line (Sj) is the high level potential that corresponds to the state wherein light is not emitted. Thus, unnecessary light emission of the electro-optical element due to the change of the potential of the control line is eliminated without increasing the number of power supplies and wiring lines.
(FR)
Un transistor à couches minces (TFT) d'effacement (13) est disposé entre la borne de grille d'un TFT de commande (11) et une ligne de commande (Ei) à laquelle est connectée la borne de grille du TFT d'effacement (13). Au moment d'effacer des données, un potentiel égal ou supérieur au total du potentiel d'une ligne d'alimentation électrique (Vp) et de la tension de seuil du TFT d'effacement (13) est appliqué à la ligne de commande (Ei) jusqu'à ce que l'écriture des données soit démarrée, et l'élément EL organique (15) est commandé pour être dans un état dans lequel il n'émet pas de lumière. Le potentiel de niveau haut devant être appliqué à une ligne de commande (Wi) est le potentiel avec lequel un TFT d'écriture (12) reste à l'état bloqué lorsque le potentiel appliqué à une ligne de données (Sj) est le potentiel de niveau haut qui correspond à l'état dans lequel il n'y a pas d'émission de lumière. De cette façon, une émission de lumière inutile par l'élément électro-optique due au changement de potentiel de la ligne de commande est éliminée sans augmenter le nombre d'alimentations électriques et de lignes de câblage.
(JA)
 駆動用TFT11のゲート端子と制御線Eiの間に消去用TFT13を設け、消去用TFT13のゲート端子を制御線Eiに接続する。データ消去を行うときには、データ書き込みを行う前まで、制御線Eiに対して電源線Vpの電位と消去用TFT13の閾値電圧の合計以上の電位を印加し、有機EL素子15を非発光状態に制御する。制御線Wiに印加されるハイレベル電位は、データ線Sjに印加される電位が非発光状態に対応したハイレベル電位であるときに、書き込み用TFT12がオフ状態を維持する電位とする。これにより、電源や配線の数を増やすことなく、制御線の電位の変化に伴う電気光学素子の不要な発光を防止する。
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