• Transactions of the Society of Information Storage Systems
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• v.2 no.4
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• pp.236-239
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• 2006

Glass micro molding process is the most suitable process for fabricating high precision glass microlens amy at low cost. A new glass micro molding process was proposed. Tungsten carbide mold was fabricated by imprinting and sintering process to overcome the difficulties of the conventional process. In the glass micro molding process, process conditions such as processing temperature and compression force were changed. Geometrical properties of the replicated glass microlens array were measured and compared at variety process conditions. The condition of glass micro molding process was optimized. The experimental result showed that developed process was effective to produce a glass microlens array.

• Proceedings of the Optical Society of Korea Conference
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• 2007.02a
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• pp.253-254
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• 2007

• Photonics industry news
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• s.7
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• pp.54-59
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• 2001

본지에서는 한국과학기술정보연구원(KISTI)의 자료협조를 받아 광산업과 관련된 해외 신기술 동향을 소개한다.

• Proceedings of the Optical Society of Korea Conference
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• 2004.02a
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• pp.66-67
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• 2004

• Proceedings of the Optical Society of Korea Conference
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• 2008.02a
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• pp.393-394
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• 2008

• Proceedings of the Optical Society of Korea Conference
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• 2008.07a
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• pp.451-452
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• 2008

• 발명특허
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• v.27 no.4 s.310
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• pp.66-73
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• 2002

• The Optical Journal
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• s.176
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• pp.27-28
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• 2020

• Korean Journal of Optics and Photonics
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• v.18 no.6
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• pp.441-446
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• 2007

Outcoupling efficiency of the OLED device is improved by incorporating both a microlens array and a diffractive grating pattern. The microlens array improves the light transmission at the interface of glass and air, and the diffractive grating outcouples the guided mode propagating at the waveguide, which consists of ITO and organic layers. By using the PDMS soft mold imprinting method, the microlens array is fabricated on the glass substrate. The diffractive grating pattern is directly fabricated on the ITO surface by using laser interferometry. A microlens array with a diameter of $10{\mu}m$ improves the light coupling efficiency by 22%. The diffractive grating made of TSMR photoresist enhances the luminance power efficiency by 41% at a current density of $20mA/cm^2$.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.599-600
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• 2008