Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020107420 - PIXEL CIRCUIT, DRIVING METHOD, AND DISPLAY APPARATUS

Publication Number WO/2020/107420
Publication Date 04.06.2020
International Application No. PCT/CN2018/118635
International Filing Date 30.11.2018
IPC
G09G 3/32 2016.01
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
32semiconductive, e.g. using light-emitting diodes
CPC
G09G 2300/0819
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
0819used for counteracting undesired variations, e.g. feedback or autozeroing
G09G 2300/0852
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
0852being a dynamic memory with more than one capacitor
G09G 2310/0216
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
0202Addressing of scan or signal lines
0216Interleaved control phases for different scan lines in the same sub-field, e.g. initialization, addressing and sustaining in plasma displays that are not simultaneous for all scan lines
G09G 2320/045
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
04Maintaining the quality of display appearance
043Preventing or counteracting the effects of ageing
045Compensation of drifts in the characteristics of light emitting or modulating elements
G09G 3/32
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]
G09G 3/3233
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
Applicants
  • BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
Inventors
  • XUAN, Minghua
  • YUE, Han
  • CHEN, Xiaochuan
  • CONG, Ning
Agents
  • TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PIXEL CIRCUIT, DRIVING METHOD, AND DISPLAY APPARATUS
(FR) CIRCUIT DE PIXELS, PROCÉDÉ DE COMMANDE ET APPAREIL D'AFFICHAGE
Abstract
(EN)
A pixel circuit (100) for a light-emitting diode display panel. The pixel circuit (100) includes a reset sub-circuit (11) configured to initialize voltage levels of some nodes. Additionally, the pixel circuit (100) includes a data-input-compensation sub-circuit (13) configured to load a data signal (Vdata) and adjust the voltage levels of the nodes for determining a driving current (I d) flowing through a driving sub-circuit (17). The pixel circuit (100) further includes a voltage-control sub-circuit (14) for controlling a switch sub-circuit (15) to determine whether the driving current (I d) is flowing or not. Moreover, the pixel circuit (100) includes an emission-control sub-circuit (16) configured to control a partial time span in one scan for passing the driving current (I d) to the light-emitting diode (LED) to drive light emission. The one scan is one of multiple different scans in one cycle time of displaying one frame of image.
(FR)
L'invention concerne un circuit de pixels (100) pour un panneau d'affichage à diodes électroluminescentes. Le circuit de pixels (100) comprend un sous-circuit de réinitialisation (11) configuré pour initialiser les niveaux de tension de certains nœuds. De plus, le circuit de pixels (100) comprend un sous-circuit de compensation d'entrée de données (13) configuré pour charger un signal de données (Vdata) et ajuster les niveaux de tension des nœuds permettant de déterminer un courant d'attaque (I d) circulant à travers un sous-circuit d'attaque (17). Le circuit de pixels (100) comprend également un sous-circuit de commande de tension (14) permettant de commander un sous-circuit de commutation (15) afin de déterminer si le courant d'attaque (I d) circule ou non. De plus, le circuit de pixels (100) comprend un sous-circuit de commande d'émission (16) configuré pour commander un intervalle de temps partiel dans un balayage permettant de faire circuler le courant d'attaque (I d) jusqu'à la diode électroluminescente (DEL) afin de commander l'émission de lumière. Le balayage unique est l'un de multiples balayages différents dans une durée de cycle permettant d'afficher une trame d'image.
Also published as
CN201880002280.6
Latest bibliographic data on file with the International Bureau