Inkjet Printing of Light-Emitting Polymer Displays

MRS Bulletin ◽  
2003 ◽  
Vol 28 (11) ◽  
pp. 821-827 ◽  
Author(s):  
Tatsuya Shimoda ◽  
Katsuyuki Morii ◽  
Shunichi Seki ◽  
Hiroshi Kiguchi
Keyword(s):  
Inkjet Printing ◽  
Color Image ◽  
Drying Process ◽  
Film Properties ◽  
Light Emitting ◽  
Thickness Profile ◽  
Full Color ◽  
Direct Patterning ◽  
Organic Electroluminescent ◽  
Color Pixel

AbstractBased on the concept of a microliquid process, we have developed an organic electroluminescent display using conductive polymers, including light-emitting polymers. The technology of inkjet printing has progressed enough to be used for the microliquid process. First, we describe the process used to form a patterned thin film. This involves inkjet-related technologies, the self-patterning behavior of a microliquid on the substrate, and the drying process that defines the thickness profile and film properties. Some microliquid behaviors and related phenomena, along with properties of the resulting film, were identified as distinct from those coming from a macroscopic liquid, as a result of size effects. By fully utilizing these unique properties of microliquids, we have succeeded in fabricating color-pixel arrays by direct patterning of polymer solutions. As a result, an organic electroluminescent display with a vivid full-color image has been developed.

Large-Area Wet Micro-Printing (LAMP)for Organic Device Patterning

2005 ◽  
Vol 871 ◽  
Author(s):  
Hongzheng Jin ◽  
James C. Sturm
Keyword(s):  
Surface Engineering ◽  
Low Cost ◽  
Large Area ◽  
Printing Plate ◽  
Light Emitting ◽  
Full Color ◽  
Important Challenge ◽  
One Step ◽  
Materials Used ◽  
Color Pixel

AbstractAn important challenge for Organic Light-Emitting Diodes (OLEDs) manufacturing is patterning method of the organic materials used for different colors. In this talk, a Large-Area wet Micro-Printing (LAMP) technique is proposed and demonstrated for organic device patterning. A printing plate is first prepared by surface engineering so that a designed surface energy pattern is achieved. The printing plate is then coated with “ink,” brought into contact the device substrate, and the “ink” is transferred. With this approach, the red (R), green (G) blue (B) sub-pixel arrays needed in a full-color display can be printed in three successive steps, one step for each color. Both single-color pixel arrays and R, G, B sub-pixel arrays have been patterned as a demonstration of the feasibility of this method. The technique has the potential advantages of low-cost and high-throughput and it avoids some of the practical problems associated with the design and operation of an ink-jet apparatus.

Tetraphenylbenzene-based AIEgens: the Horizontally Oriented Emitters for highly Efficient Non-doped Deep Blue OLEDs and Host for High-Performance Hybrid WOLEDs

2020 ◽  
Author(s):  
Pengbo Han ◽  
Zeng Xu ◽  
Chengwei Lin ◽  
Dongge Ma ◽  
Anjun Qin ◽  
...  
Keyword(s):  
High Performance ◽  
General Strategy ◽  
Flat Panel Displays ◽  
Light Emitting ◽  
Horizontal Orientation ◽  
Deep Blue ◽  
Full Color ◽  
High Emission ◽  
White Oleds ◽  
Low Efficiency

Deep blue organic-emitting fluorophores are crucial for application in white lighting and full color flat-panel displays but emitters with high color quality and efficiency are rare. Herein, novel deep blue AIE luminogens (AIEgens) with various donor units and an acceptor of cyano substituted tetraphenylbenzene (TPB) cores were developed and used to fabricate non-doped deep blue and hybrid white organic light-emitting diodes (OLEDs). Benefiting from its high emission efficiency and high proportion of horizontally oriented dipoles in the film state, the non-doped deep blue device based on CN-TPB-TPA realized a maximum external quantum efficiency 7.27%, with a low efficiency roll-off and CIE coordinates of (0.15, 0.08). Moreover, efficient two-color hybrid warm white OLEDs (CIE<sub>x,y</sub> = 0.43, 0.45) were achieved using CN-TPB-TPA as the blue-emitting layer and phosphor doped host, which realized maximum current, power, external quantum efficiencies 58.0 cd A<sup>-1</sup>, 60.7 lm W<sup>-1</sup> and 19.1%, respectively. This work provides a general strategy to achieve high performance, stable deep blue and hybrid white OLEDs by construction of AIEgens with excellent horizontal orientation

Enhanced Performance of Pixelated Quantum Dot Light‐Emitting Diodes by Inkjet Printing of Quantum Dot–Polymer Composites

2021 ◽  
pp. 2002129
Author(s):  
Heebum Roh ◽  
Donghyun Ko ◽  
Dong Yeol Shin ◽  
Jun Hyuk Chang ◽  
Donghyo Hahm ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Polymer Composites ◽  
Inkjet Printing ◽  
Light Emitting Diodes ◽  
Light Emitting

scholarly journals Full-color nanorouter for high-resolution imaging

Nanoscale ◽  
2021 ◽  
Author(s):  
Mingjie Chen ◽  
Long Wen ◽  
Dahui Pan ◽  
David Cumming ◽  
Xianguang Yang ◽  
...  
Keyword(s):  
High Resolution ◽  
Color Image ◽  
Image Sensors ◽  
Structural Color ◽  
High Resolution Imaging ◽  
Scaling Effects ◽  
Full Color ◽  
Resolution Imaging

Pixel scaling effects have been a major issue for the development of high-resolution color image sensors due to the reduced photoelectric signal and the color crosstalk. Various structural color techniques...

High-brightness perovskite quantum dot light-emitting devices using inkjet printing

2021 ◽  
Vol 93 ◽  
pp. 106168
Author(s):  
Chunbo Zheng ◽  
Xin Zheng ◽  
Chen Feng ◽  
Songman Ju ◽  
Zhongwei Xu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Inkjet Printing ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices

High performance red phosphorescent organic electroluminescent devices with characteristic mechanisms by utilizing terbium or gadolinium complexes as sensitizers

2017 ◽  
Vol 5 (8) ◽  
pp. 2066-2073 ◽  
Author(s):  
Rongzhen Cui ◽  
Weiqiang Liu ◽  
Liang Zhou ◽  
Xuesen Zhao ◽  
Yunlong Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Gadolinium Complexes ◽  
Organic Electroluminescent ◽  
High Color Purity

High performance sensitized organic light-emitting diodes with high color purity were obtained by utilizing terbium or gadolinium complexes as sensitizers.

scholarly journals Highly flexible, full-color, top-emitting quantum dot light-emitting diode tapes

2013 ◽  
Author(s):  
Xuyong Yang ◽  
Evren Mutlugun ◽  
Yuan Gao ◽  
Yongbiao Zhao ◽  
Swee Tiam Tan ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Full Color
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