38-1:Invited Paper: Ink-Jet-Printed OLEDs for Display Applications

Abstract

We report performance of red, green and blue inkjet printed organic light emitting diodes with common blue device architecture. Device efficiency, voltage, color and lifetime are reported, and emission profile discussed. We demonstrate that inkjet printed OLED performance metrics are rapidly approaching commercial requirements for display applications, and discuss strong potential for further progress.

57‐1: Invited Paper: Ink‐Jet‐Printed OLED Displays

“…b) shows comparison data we reported last year for IJP OLEDs with a BCL architecture[1].Figure 2shows that good emission uniformity can be achieved on the sub-pixel scale for Red, Green and Blue, and this enables the strong device performance reported inTable 1(a). Further improvement of EL uniformity is an ongoing development topic that is discussed later.…”

“…resolution > 200 ppi, as required for mobile applications), further advancement in print head technology is likely required. [1]. Data is shown for IJP OLEDs printed in air on bottomemission substrates without any burn-in or optical enhancement.…”

“…Inkjet printed (IJP) organic light-emitting diode (OLED) device performance continues to accelerate towards target specifications for large area displays [1][2][3]. There has also been impressive progress in the development of printing techniques for OLED manufacturing [4].…”

“…There has also been impressive progress in the development of printing techniques for OLED manufacturing [4]. Here we report the latest performance of Red, Green and Blue IJP OLEDs, with focus on transition from vapordeposited blue common layer (BCL) [1] to a panel design with printed blue. Full-stacks are demonstrated with all materials and inks developed by Merck KGaA.…”

80‐3: All Organic Layers Inkjet Printed OLEDs with a Printable Electronic Transport Layer

“…Inkjet printed (IJP) organic light emitting diodes (OLEDs) are attracting more and more attention with the advantages of noncontact deposition, reduced material wastage, low cost and scalability to large area manufacturing [1][2][3]. Currently, commercial OLEDs are made of multilayer devices with varied functional layers acting as charge injection, charge transport, exciton blocking, and emitting layers (EMLs)... For IJP OLEDs, which is one kind of the solution-processed OLEDs, a major issue is intermixing of layers due to the deposition of a layer may dissolve or intermix with the preceding layer [4][5].…”