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Method for fabricating organic light emitting diodes and organic light emitting diode

A technology of light-emitting diodes and diodes, which is applied in the production of organic light-emitting diodes and the production of this type of diodes, which can solve problems such as poor supply and reduced component efficiency

Inactive Publication Date: 2004-09-01
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This supply is significantly harsher than the low DC voltages suitable for OLED operation
Furthermore, high-frequency alternating voltages at large-area electrodes lead to radiated strong electromagnetic fields and / or to large drops in component efficiency as a result of reactive power losses

Method used

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  • Method for fabricating organic light emitting diodes and organic light emitting diode
  • Method for fabricating organic light emitting diodes and organic light emitting diode
  • Method for fabricating organic light emitting diodes and organic light emitting diode

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Embodiment Construction

[0088] figure 1 A cross-sectional view through a first embodiment of the invention is shown, which embodiment is generally indicated by reference numeral 1 . OLED1 comprises a substrate to which is applied the OLED layer structure indicated in its entirety as 3 . The layer structure comprises a first conductive electrode layer 5 applied to the substrate surface, a structured resistive layer 7 applied to the electrode layer 5, an electroluminescent layer 11 and functional layers 91, 92, and finally a second conductive Electrode layer 13.

[0089] Examples of suitable functional layers for improving light output are potential matching layers, hole injection layers, electron blocking layers, hole blocking layers, electron conductor layers and electron injection layers.

[0090] In order to protect the OLED layer structure 3 from harmful effects, this layer structure is also surrounded by an encapsulation 15 . This protects the sensitive OLED layers from, inter alia, atmospheri...

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Abstract

The invention provides a process for producing an improved organic light-emitting diode (1) with a structured luminous area and a substrate (2), which comprises the steps of: applying a first conductive electrode layer (5), applying a resistive layer (7) having at least one structure (17), applying at least one layer (11) which includes an organic, electroluminescent material, and applying a second conductive electrode layer (13), wherein the surface of the structure (17), in particular in its edge region (27), adopts an angle which remains less than 90 DEG with respect to the surface of the substrate.

Description

technical field [0001] The present invention generally relates to a method of producing an organic light emitting diode, and an organic light emitting diode (OLED). In particular, the invention relates to an organic light-emitting diode with structured light-emitting regions, and a method of producing a diode of this type. Background technique [0002] OLEDs generally consist of a set of layers, that is to say a layer structure with an organic electroluminescent layer between two electrode layers, which layer structure is used for a suitable substrate. In general, in OLEDs, one conductive layer acts as cathode and the other as anode in each case. For this reason, it is known to make electrode layers from materials having different work functions, so that a difference in work function is created between these layers. [0003] Organic light-emitting diodes (OLEDs) are notable for their particular advantages compared to other light-emitting devices. OLEDs, for example, have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60QH01L33/00H01L51/00H01L51/30H01L51/40H01L51/56H05B33/00H05B33/10H05B33/12
CPCH01L51/56H01L51/5234H01L27/3239H01L51/52H01L51/5212H10K59/221H10K50/80H10K50/814H10K50/828H10K71/00
Inventor 克莱门斯·奥特曼博恩德·舒尔塞思霍尔格·克布里奇德克·赫特尔鲁思·埃弗恩博格克劳斯·迈克尔·海莫尔
Owner SCHOTT AG