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1. WO2011125107 - ORGANIC EL DISPLAY DEVICE AND METHOD FOR CONTROLLING SAME

Publication Number WO/2011/125107
Publication Date 13.10.2011
International Application No. PCT/JP2010/002471
International Filing Date 05.04.2010
IPC
G09G 3/30 2006.1
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
G09F 9/30 2006.1
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
9Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
30in which the desired character or characters are formed by combining individual elements
G09G 3/20 2006.1
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 27/32 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
28including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
32with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
H01L 51/50 2006.1
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 2300/0861
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
0809Several active elements per pixel in active matrix panels
0842forming a memory circuit, e.g. a dynamic memory with one capacitor
0861with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
G09G 2310/06
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
06Details of flat display driving waveforms
G09G 2320/0233
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
0233Improving the luminance or brightness uniformity across the screen
G09G 3/325
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
3233with pixel circuitry controlling the current through the light-emitting element
3241the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
325the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver
Applicants
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 戎野浩平 EBISUNO, Kouhei (UsOnly)
Inventors
  • 戎野浩平 EBISUNO, Kouhei
Agents
  • 新居広守 NII, Hiromori
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ORGANIC EL DISPLAY DEVICE AND METHOD FOR CONTROLLING SAME
(FR) ÉCRAN ÉLECTROLUMINESCENT ORGANIQUE ET SON PROCÉDÉ DE COMMANDE
(JA) 有機EL表示装置及びその制御方法
Abstract
(EN) Disclosed is an organic EL display device which comprises: a light emitting pixel (170) that comprises a drive transistor (173), a scan transistor (171), a reset transistor (172), a capacitor (174) that is inserted between the gate electrode and the source electrode of the drive transistor (173), and a light emitting element (175) that is connected to the source electrode of the drive transistor (173); and a drive circuit. The drive transistor (173) comprises a back gate electrode. The drive circuit electrically disconnects the drive transistor (173) by applying a predetermined bias voltage to the back gate electrode and making the threshold voltage of the drive transistor (173) larger than the potential difference between the gate electrode and the source electrode, and has the capacitor (174) hold a voltage that corresponds to a signal voltage, while maintaining the drive transistor (173) in the electrically disconnected state.
(FR) La présente invention concerne un écran électroluminescent organique, qui comprend : un pixel électroluminescent (170) qui comprend un transistor de commande (173), un transistor de balayage (171), un transistor de réinitialisation (172), un condensateur (174) inséré entre l'électrode de grille et l'électrode source du transistor de commande (173) et un élément électroluminescent (175) qui est connecté à l'électrode source du transistor de commande (173); et un circuit d'entraînement. Le transistor de commande (173) comprend une électrode de grille arrière. Le circuit d'entraînement déconnecte électriquement le transistor de commande (173) par l'application d'une tension de polarisation prédéfinie à l'électrode de grille arrière et en rendant la tension de seuil du transistor de commande (173) supérieure à la différence de potentiel entre l'électrode de grille et l'électrode source, et amène le condensateur (174) à maintenir une tension qui correspond à une tension de signal, tout en maintenant le transistor de commande (173) dans un état électriquement déconnecté.
(JA)  本発明に係る有機EL表示装置は、駆動トランジスタ(173)と、走査トランジスタ(171)と、リセットトランジスタ(172)と、駆動トランジスタ(173)のゲート電極-ソース電極間に挿入されたコンデンサ(174)と、駆動トランジスタ(173)のソース電極に接続された発光素子(175)とを備える発光画素(170)と、駆動回路とを備え、駆動トランジスタ(173)はバックゲート電極を有し、駆動回路は、所定のバイアス電圧をバックゲート電極に印加することにより、駆動トランジスタ(173)の閾値電圧をゲート電極及びソース電極間の電位差よりも大きくして駆動トランジスタ(173)を非導通とし、駆動トランジスタ(173)を非導通とした状態で、コンデンサ(174)に信号電圧に対応する電圧を保持させる。
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