P-66: Ink Jet Printed Full Color Polymer LED Displays

Lee, Dongwon; Chung, Jinkoo; Rhee, Jungsoo; Wang, Jianpu; Hong, Sang‐Mi; Choi, Beomrak; Cha, Soonwook; Kim, Namdeog; Chung, Kyuha; Gregory, H.J.; Lyon, Peter; Creighton, Colin; Carter, Julian; Hatcher, Marie; Bassett, Owen; Richardson, Martin; Jerram, Paul

doi:10.1889/1.2036491

Cited by 20 publications

(11 citation statements)

References 4 publications

(1 reference statement)

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“…For full-color active-matrix organic light-emitting diodes (AMOLEDs), the current color-patterning method of choice is the thermal evaporation of small-molecules through a fine metal shadow mask. Because this method is limited to small-sized substrates (≤730 × 460 mm 2 , currently), color-changing media (CCM), 1 laser-induced thermal imaging (LITI), 2 ink-jet printing, 3 and, more recently, laser-induced pattern-wise sublimation (LIPS) 4 were proposed for larger substrates. However, there is no commercial production of AMOLEDs using these technologies as of yet.…”

Section: Introductionmentioning

confidence: 99%

Micro‐cavity design of bottom‐emitting AMOLED with white OLED and RGBW color filters for 100% color gamut

Lee

Hwang

et al. 2009

J Soc Info Display

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Abstract— Two optical structures used for a bottom‐emitting white organic light‐emitting diode (OLED) is reported. An RGBW color system was employed because of its high efficiency. For red, green, and blue (RGB) subpixels, the cavity resonance was enhanced by the use of a dielectric mirror, and for the white (W) subpixel, the mirror was removed. The optical length of the cavities was controlled by two different ways: by the thickness of the dielectric filter on top of the mirror or by the angle of oblique emission. With both methods, active‐matrix OLEDs (AMOLEDs) that reproduced a color gamut exceeding 100% of the NTSC (National Television System Committee) standard were fabricated. More importantly, the transmission of a white OLED through R/G/B color filters was significantly higher (up to 50%) than that of a conventional structure not employing a mirror, while at the same time as the color gamut increased from ∼75 to ∼100% NTSC.

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Section: Introductionmentioning

confidence: 99%

Micro‐cavity design of bottom‐emitting AMOLED with white OLED and RGBW color filters for 100% color gamut

Lee

Hwang

et al. 2009

J Soc Info Display

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“…OLED display manufacturing employs direct write techniques for patterning the various materials. Examples of OLED material direct write technologies include ink jet printing (Hashimoto et al, 2006, Gohda et al 2002, Lee et al 2002,, Kobayshi et al 2002, Shirasaki et al 2004, Fleuster et al 2004, Lee et al 2005, Saafir et al 2005) screen printing (Shinar et al 2007, Lee et al 2009) and laser induced forward transfer (LIFT) (Hirano et al 2007, Piqué et al 1999, Suh et al 2003, Willis et al 2005, Kyrkis et al 2006. As described in a recent review on OLED RGB patterning, success of an OLED patterning scheme depends on the material type, device design, pixel array pattern, display format, substrate size, placement accuracy, process TACT-time, and defect density.…”

Section: Introductionmentioning

confidence: 99%

Unconventional, Laser Based OLED Material Direct Patterning and Transfer Methods

Ko¹,

Grigoropoulos²

2011

Organic Light Emitting Diode - Material, Process and Devices

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“…Conventional photolithography is usually not capable of patterning organic materials because the solvent used in the process may degrade the materials to be patterned. Ink-jet printing [1][2][3][4] has been widely used, but it suffers from potential drawbacks such as poor resolution, low throughput, and non-uniform thickness. Other alternative patterning methods demonstrated includes laser-induced thermal imaging 5,6 and laser-induced sublimation transfer.…”

Section: Introductionmentioning

confidence: 99%

Super‐high‐resolution transfer printing for full‐color OLED display patterning

Jin¹,

Sturm²

2010

J Soc Info Display

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Abstract— A transfer‐printing method for the patterning of thin polymer layers is described. A hard stamp with a raised feature is brought into contact with a spin‐coated organic film under elevated pressure and temperature to break the films. The patterned film is then transfer printed onto the devices. This method is used to print red/green/blue subpixel arrays with a pattern size as small as 12 μm at a resolution of 530 ppi to demonstrate its ability for full‐color organic light‐emitting‐display fabrication. Devices with printed organic layers have similar performance to spin‐coated controls under optimized printing temperature and pressure settings. The critical physical parameters include a soft intermediate plate for the sharp breaking of edge patterns, control of surface energies, and printing at moderate temperature and pressure to achieve intimate contact between the printed layer and the underlying substrate.

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P-66: Ink Jet Printed Full Color Polymer LED Displays

Cited by 20 publications

References 4 publications

Micro‐cavity design of bottom‐emitting AMOLED with white OLED and RGBW color filters for 100% color gamut

Micro‐cavity design of bottom‐emitting AMOLED with white OLED and RGBW color filters for 100% color gamut

Unconventional, Laser Based OLED Material Direct Patterning and Transfer Methods

Super‐high‐resolution transfer printing for full‐color OLED display patterning

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