Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs)
Abstract
Provided are microlens arrays for use on the substrate of OLEDs to extract more light that is trapped in waveguided modes inside the devices and methods of manufacturing same. Light extraction with microlens arrays is not limited to the light emitting area, but is also efficient in extracting light from the whole microlens patterned area where waveguiding occurs. Large microlens array, compared to the size of the light emitting area, extract more light and result in over 100% enhancement. Such a microlens array is not limited to (O)LEDs of specific emission, configuration, pixel size, or pixel shape. It is suitable for all colors, including white, for microcavity OLEDs, and OLEDs fabricated directly on the (modified) microlens array.
- Inventors:
- Issue Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1133638
- Patent Number(s):
- 8742406
- Application Number:
- 13/397,749
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
- DOE Contract Number:
- AC02-07CH11358
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 42 ENGINEERING
Citation Formats
Leung, Wai Y., Park, Joong-Mok, Gan, Zhengqing, Constant, Kristen P., Shinar, Joseph, Shinar, Ruth, and ho, Kai-Ming. Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs). United States: N. p., 2014.
Web.
Leung, Wai Y., Park, Joong-Mok, Gan, Zhengqing, Constant, Kristen P., Shinar, Joseph, Shinar, Ruth, & ho, Kai-Ming. Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs). United States.
Leung, Wai Y., Park, Joong-Mok, Gan, Zhengqing, Constant, Kristen P., Shinar, Joseph, Shinar, Ruth, and ho, Kai-Ming. Tue .
"Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs)". United States. https://www.osti.gov/servlets/purl/1133638.
@article{osti_1133638,
title = {Soft lithography microlens fabrication and array for enhanced light extraction from organic light emitting diodes (OLEDs)},
author = {Leung, Wai Y. and Park, Joong-Mok and Gan, Zhengqing and Constant, Kristen P. and Shinar, Joseph and Shinar, Ruth and ho, Kai-Ming},
abstractNote = {Provided are microlens arrays for use on the substrate of OLEDs to extract more light that is trapped in waveguided modes inside the devices and methods of manufacturing same. Light extraction with microlens arrays is not limited to the light emitting area, but is also efficient in extracting light from the whole microlens patterned area where waveguiding occurs. Large microlens array, compared to the size of the light emitting area, extract more light and result in over 100% enhancement. Such a microlens array is not limited to (O)LEDs of specific emission, configuration, pixel size, or pixel shape. It is suitable for all colors, including white, for microcavity OLEDs, and OLEDs fabricated directly on the (modified) microlens array.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {6}
}
Works referenced in this record:
Exposure device
patent-application, July 2002
- Ohkubo, Kazunobu
- US Patent Application 10/029177; 20020085187
Porous optical materials
patent-application, January 2003
- Khanarian, Garo; You, Yujian; Gore, Robert H.
- US Patent Application 10/154999; 20030008244
Low loss electro-optic polymers and devices made therefrom
patent-application, October 2003
- He, Mingqian; Shustack, Paul J.; Wang, Jianguo
- US Patent Application 10/136869; 20030201429
Photonic crystal, method of producing photonic crystal, and functional element
patent-application, February 2004
- Yamaguchi, Yasuhiro
- US Patent Application 10/396359; 20040036814
Light emitting array with improved characteristics, optical writing unit, and image forming apparatus
patent-application, March 2005
- Masuda, Koji; Sakuma, Nobuo; Ito, Masahiro
- US Patent Application 10/891179; 20050067944
Photonic-crystal filament and methods
patent-application, July 2005
- Champion, David; Herman, Gregory S.; Vander Plas, Hubert A.
- US Patent Application 10/767732; 20050160964
Synthetic opal and photonic crystal
patent-application, August 2005
- Marshall, Robert A.
- US Patent Application 11/049025; 20050166837
Radiation emitting structures including photonic crystals
patent-application, April 2006
- Wang, Shih-Yuan
- US Patent Application 10/959704; 20060071585
Energy conversion device and production method therefor
patent-application, June 2006
- Horiuchi, Makoto; Kimoto, Mitsuhiko; Ohkubo, Kazuaki
- US Patent Application 10/541924; 20060132014
Apparatus having a photonic crystal
patent-application, August 2006
- Etheridge, III, Herbert Thomas; Lewis, Henry; McConica, Carol
- US Patent Application 11/046587; 20060170334
Light Emitting Device with Microlens Array
patent-application, December 2008
- Chari, Krishnan; Lander, Charles W.; Liao, Liang-Sheng
- US Patent Application 11/763264; 20080310186
Organic Electroluminescent Device
patent-application, July 2011
- Smith, Euan C.
- US Patent Application 12/995658; 20110163340
Method for Manufacturing Flexible Electrode Substrate
patent-application, May 2013
- Koo, Jae Bon; You, In-Kyu; Yang, Yong Suk
- US Patent Application 13/554069; 20130108777
Single Route for Producing Organized Metallic Domes, Dots, and Pores by Colloidal Templating and Over-Sputtering
journal, June 2002
- Mikrajuddin, ; Iskandar, F.; Okuyama, K.
- Advanced Materials, Vol. 14, Issue 12
Synthesis and Magnetic Behavior of Periodic Nickel Sphere Arrays
journal, September 2003
- Xu, L.; Tung, L. D.; Spinu, L.
- Advanced Materials, Vol. 15, Issue 18, p. 1562-1564
TiO2 Inverse Opals Fabricated Using Low-Temperature Atomic Layer Deposition
journal, April 2005
- King, J. S.; Graugnard, E.; Summers, C. J.
- Advanced Materials, Vol. 17, Issue 8, p. 1010-1013
Experimental observation of photonic-crystal emission near a photonic band edge
journal, July 2003
- Lin, Shawn-Yu; Fleming, J. G.; El-Kady, I.
- Applied Physics Letters, Vol. 83, Issue 4
High-filling-fraction inverted ZnS opals fabricated by atomic layer deposition
journal, September 2003
- King, J. S.; Neff, C. W.; Summers, C. J.
- Applied Physics Letters, Vol. 83, Issue 13
Metallic photonic crystals
journal, January 2002
- Lourtioz, Jean-Michel; de Lustrac, André
- Comptes Rendus Physique, Vol. 3, Issue 1
Electrodeposited nickel and gold nanoscale metal meshes with potentially interesting photonic properties
journal, January 2000
- Xu, Lianbin; Wiley, John B.; Zhou, Weilie L.
- Chemical Communications, Issue 12
Extraordinary emission from two-dimensional plasmonic-photonic crystals
journal, July 2005
- Puscasu, Irina; Pralle, M.; McNeal, M.
- Journal of Applied Physics, Vol. 98, Issue 1, Article No. 013531
Formation of Zinc Inverted Opals on Indium Tin Oxide and Silicon Substrates by Electrochemical Deposition
journal, October 2004
- Juárez, Beatriz H.; López, Cefe; Alonso, Concepción
- The Journal of Physical Chemistry B, Vol. 108, Issue 43
Metallic tunable photonic crystal filter for terahertz frequencies
journal, January 2003
- Drysdale, Timothy D.; Mills, Gordon; Ferguson, Susan M.
- Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 21, Issue 6
Fabrication of three-dimensional photonic structures with submicrometer resolution by x-ray lithography
journal, January 2000
- Cuisin, C.; Chelnokov, A.; Lourtioz, J. -M.
- Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 18, Issue 6
Fabrication of 3D metallic photonic crystals by X-ray lithography
journal, June 2003
- Romanato, F.; Businaro, L.; Vaccari, L.
- Microelectronic Engineering, Vol. 67-68, p. 479-486
All-metallic three-dimensional photonic crystals with a large infrared bandgap
journal, May 2002
- Fleming, J. G.; Lin, S. Y.; El-Kady, I.
- Nature, Vol. 417, Issue 6884, p. 52-55
Resonant-cavity enhanced thermal emission
journal, August 2005
- Celanovic, Ivan; Perreault, David; Kassakian, John
- Physical Review B, Vol. 72, Issue 7, Article No. 075127
Coherent Thermal Antenna Using a Photonic Crystal Slab
journal, March 2006
- Laroche, M.; Carminati, R.; Greffet, J. -J.
- Physical Review Letters, Vol. 96, Issue 12
Carbon Structures with Three-Dimensional Periodicity at Optical Wavelengths
journal, October 1998
- Zakhidov, Anvar A.; Baughman, Ray H.; Iqbal, Zafar
- Science, Vol. 282, Issue 5390, p. 897-901
Two-Polymer Microtransfer Molding for Highly Layered Microstructures
journal, October 2005
- Lee, J.-H.; Kim, C.-H.; Ho, K.-M.
- Advanced Materials, Vol. 17, Issue 20, p. 2481-2485
Woodpile Metallic Photonic Crystals Fabricated by Using Soft Lithography for Tailored Thermal Emission
journal, March 2007
- Lee, J.-H.; Kim, Y.-S.; Constant, K.
- Advanced Materials, Vol. 19, Issue 6, p. 791-794
Applications of thin film reflecting coating technology to tungsten filament lamps
journal, January 1993
- Bergman, R. S.; Parham, T. G.
- IEE Proceedings A Science, Measurement and Technology, Vol. 140, Issue 6
Design of a hot mirror: contest results
journal, January 1996
- Thelen, Alfred
- Applied Optics, Vol. 35, Issue 25
Photonic band structures solved by a plane-wave-based transfer-matrix method
journal, April 2003
- Li, Zhi-Yuan; Lin, Lan-Lan
- Physical Review E, Vol. 67, Issue 4
Optical microcavities in condensed matter systems
journal, October 1994
- Slusher, R. E.; Weisbuch, C.
- Solid State Communications, Vol. 92, Issue 1-2, p. 149-158
Enhanced light out-coupling of organic light-emitting devices using embedded low-index grids
journal, July 2008
- Sun, Yiru; Forrest, Stephen R.
- Nature Photonics, Vol. 2, Issue 8
Doubling Coupling-Out Efficiency in Organic Light-Emitting Devices Using a Thin Silica Aerogel Layer
journal, August 2001
- Tsutsui, T.; Yahiro, M.; Yokogawa, H.
- Advanced Materials, Vol. 13, Issue 15
Diffracted moiré fringes as analysis and alignment tools for multilayer fabrication in soft lithography
journal, May 2005
- Lee, Jae-Hwang; Kim, Chang-Hwan; Kim, Yong-Sung
- Applied Physics Letters, Vol. 86, Issue 20
Ceramic-Metal Interpenetrating Network Composites Formed by Electrodeposition
journal, January 2005
- Wei, X.; Atkinson, A.
- Journal of The Electrochemical Society, Vol. 152, Issue 8
Colloidal crystal templating of three-dimensionally ordered macroporous solids: materials for photonics and beyond
journal, December 2001
- Stein, Andreas; Schroden, Rick C.
- Current Opinion in Solid State and Materials Science, Vol. 5, Issue 6, p. 553-564
Fabrication of multi-layered inverse opals using laser-assisted imprinting
journal, July 2005
- Mendu, K. K.; Shi, J.; Lu, Y. F.
- Nanotechnology, Vol. 16, Issue 9
Electrochemical Fabrication of 3D Microperiodic Porous Materials
journal, April 2001
- Braun, P. V.; Wiltzius, P.
- Advanced Materials, Vol. 13, Issue 7, p. 482-485
Organic light-emitting devices (OLEDs) and OLED-based chemical and biological sensors: an overview
journal, June 2008
- Shinar, Joseph; Shinar, Ruth
- Journal of Physics D: Applied Physics, Vol. 41, Issue 13
A review on the light extraction techniques in organic electroluminescent devices
journal, November 2009
- Saxena, Kanchan; Jain, V. K.; Mehta, Dalip Singh
- Optical Materials, Vol. 32, Issue 1, p. 221-233
11.4: Coupling Efficiency Enhancement of Organic Light Emitting Devices with Refractive Microlens Array on High Index Glass Substrate
journal, January 2004
- Peng, H. J.; Ho, Y. L.; Qiu, C. F.
- SID Symposium Digest of Technical Papers, Vol. 35, Issue 1
Coupling Efficiency Enhancement in Organic Light-Emitting Devices Using Microlens Array—Theory and Experiment
journal, December 2005
- Peng, H.; Ho, Y. L.; Yu, X. -J.
- Journal of Display Technology, Vol. 1, Issue 2
Surface-plasmon-enhanced light emitters based on InGaN quantum wells
journal, August 2004
- Okamoto, Koichi; Niki, Isamu; Shvartser, Alexander
- Nature Materials, Vol. 3, Issue 9
Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification
journal, March 2000
- Madigan, C. F.; Lu, M. -H.; Sturm, J. C.
- Applied Physics Letters, Vol. 76, Issue 13
Patterned microlens array for efficiency improvement of small-pixelated organic light-emitting devices
journal, January 2008
- Lin, Hoang-Yan; Ho, Yu-Hsuan; Lee, Juin-Haw
- Optics Express, Vol. 16, Issue 15
Coherent two-dimensional lasing action in surface-emitting laser with triangular-lattice photonic crystal structure
journal, July 1999
- Imada, Masahiro; Noda, Susumu; Chutinan, Alongkarn
- Applied Physics Letters, Vol. 75, Issue 3
Angular Dependence of the Emission from a Conjugated Polymer Light-Emitting Diode: Implications for efficiency calculations
journal, June 1994
- Greenham, Neil C.; Friend, Richard H.; Bradley, Donal D. C.
- Advanced Materials, Vol. 6, Issue 6, p. 491-494
High Extraction Efficiency of Spontaneous Emission from Slabs of Photonic Crystals
journal, April 1997
- Fan, Shanhui; Villeneuve, Pierre R.; Joannopoulos, J. D.
- Physical Review Letters, Vol. 78, Issue 17
Optical thin-film materials with low refractive index for broadband elimination of Fresnel reflection
journal, March 2007
- Xi, J. -Q.; Schubert, Martin F.; Kim, Jong Kyu
- Nature Photonics, Vol. 1, Issue 3