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1. WO2020197616 - ORGANIC LIGHT-EMITTING DIODE DISPLAY WITH PIXEL DEFINITION LAYERS

Publication Number WO/2020/197616
Publication Date 01.10.2020
International Application No. PCT/US2020/014426
International Filing Date 21.01.2020
IPC
H01L 27/32 2006.01
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
H05B 33/22 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
22characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
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)
H05B 33/12 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
12Light sources with substantially two-dimensional radiating surfaces
CPC
H01L 27/3246
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 [OLED]
3241Matrix-type displays
3244Active matrix displays
3246Pixel defining structures, e.g. banks
H01L 51/5044
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]
5012Electroluminescent [EL] layer
5036Multi-colour light emission, e.g. colour tuning, polymer blend, stack of electroluminescent layers
504Stack of electroluminescent layers
5044with spacer layers between the emissive layers
H01L 51/5278
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]
52Details of devices
5262Arrangements for extracting light from the device
5278comprising a repetitive electroluminescent unit between one set of electrodes
Applicants
  • APPLE INC. [US]/[US]
Inventors
  • CHOI, Jaein
  • TANG, Hairong
  • WONG, Gloria
  • KANG, Sunggu
  • LEE, Younggu
  • PARK, Gwanwoo
  • HUANG, Chun-Yao
  • LIN, Andrew
  • LO, Chenk Chi
  • DORJGOTOV, Enkhamgalan
  • SLOOTSKY, Michael
  • LIU, Rui
  • CHANG, Wendi
  • CHEN, Cheng
Agents
  • TREYZ, George Victor
Priority Data
16/745,05516.01.2020US
62/825,69428.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ORGANIC LIGHT-EMITTING DIODE DISPLAY WITH PIXEL DEFINITION LAYERS
(FR) DISPOSITIF D'AFFICHAGE À DIODES ÉLECTROLUMINESCENTES ORGANIQUES AVEC COUCHES DE DÉFINITION DE PIXELS
Abstract
(EN)
An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross- talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have an undercut to disrupt continuity of some but not all of the OLED layers. The undercut may be defined by three discrete portions of the pixel definition layer. The undercut may result in a void that is interposed between different portions of the OLED layers to break a leakage path formed by the OLED layers.
(FR)
L'invention concerne un dispositif d'affichage à diodes électroluminescentes organiques (OLED) qui peut avoir une matrice de pixels à diodes électroluminescentes organiques qui ont chacun des couches OLED intercalées entre une cathode et une anode. Une tension peut être appliquée à l'anode de chaque pixel pour commander l'amplitude de la lumière émise. La conductivité des couches OLED peut permettre à un courant de fuite de passer entre des anodes voisines dans le dispositif d'affichage. Afin de réduire le courant de fuite et la diaphonie associée dans un dispositif d'affichage, la couche de définition de pixels peut interrompre la continuité des couches OLED. La couche de définition de pixels peut avoir une contre-dépouille pour interrompre la continuité de certaines mais pas de toutes les couches OLED. La contre-dépouille peut être définie par trois parties discrètes de la couche de définition de pixels. La contre-dépouille peut conduire à un vide qui est interposé entre différentes parties des couches OLED pour rompre un trajet de fuite formé par les couches OLED.
Also published as
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