• Transactions on Electrical and Electronic Materials
• /
• v.17 no.3
• /
• pp.168-171
• /
• 2016

There has been growing interest and rapid development in transparent electrode films, which are flexible and light and used in mobile, simple information, and electronic devices, and based on recent advancements in nano technology, information technology, and display technology. In particular, studies on developing such films with both high conductivity and high transmittance of visible rays are highly in demand for commercialization. In this study, transparent electrode films were developed for IT using micro patterns that show sheet resistance less than 10 Ω/□, adhesive strength more than 98%, and light transmittance more than 90%. The results of applying a surface emission gradient minimization (Honey Comb) technology to the films was the verification of the sheet resistance, adhesive strength, and light transmittance satisfying the target level of this study through Imprinting and Remolding processes.

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2009.10a
• /
• pp.103-103
• /
• 2009

태양전지 모듈의 효율 상승을 위한 한 가지 방법으로써 태양전지 모듈에 보호층으로 사용되는 고분자 플레이트 및 보호 유리층 등에 저반사 효과를 갖는 나노급 크기의 패턴을 형성 하였다. PVC, PMMA 등의 고분자 소재의 보호층은 hot-embossing의 방법을 사용하여 표면에 반사방지막을 형성하였으며, 양면 동시 엠보싱 방법을 사용하여 그 효율을 높이고자 하였다. 또한 저철분 유리판 위에 nano-imprinting 공정을 사용한 고분자 패턴을 형성함으로써 반사 방지효과를 얻고자 하였다. 또한, 형성된 패턴의 내구성을 측정함으로써 태양전지 모듈에의 적용 가능성을 확인 하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2007.06a
• /
• pp.763-764
• /
• 2007

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2003.06a
• /
• pp.632-635
• /
• 2003

As a process technology of nano pattern with a new conception for economic and practical technology of alternative nano process. process technologies such as Embossing, Imprinting. Molding and Inking are beginning to make its appearance. Among these alternative processes, nano mold process is a process that is of benefit to mass production and keeps excellency of reproduction and high quality of parts. In this study, we experienced micro precision machining technology of nano stamper for the injection mold of optical disk with big capacity. Especially, Flatness and uniformity are important for nano stamper with global area, for the purpose of developing polishing technology of micro precision of Back polishing only being used for nano stamper, we carried out a basic study to secure flatness standards

• JSTS:Journal of Semiconductor Technology and Science
• /
• v.7 no.3
• /
• pp.133-139
• /
• 2007

Future MEMS systems will be composed of larger varieties of devices with very different functionality such as electronics, mechanics, optics and bio-chemistry. Integration technology of heterogeneous devices must be developed. This article first deals with the current development trend of new fabrication technologies; those include self-assembling of parts over a large area, wafer-scale encapsulation by wafer-bonding, nano imprinting, and roll-to-roll printing. In the latter half of the article, the concept towards the heterogeneous integration of devices and functionality into micro/nano systems is described. The key idea is to combine the conventional top-down technologies and the novel bottom-up technologies for building nano systems. A simple example is the carbon nano tube interconnection that is grown in the via-hole of a VLSI chip. In the laboratory level, the position-specific self-assembly of nano parts on a DNA template was demonstrated through hybridization of probe DNA segments attached to the parts. Also, bio molecular motors were incorporated in a micro fluidic system and utilized as a nano actuator for transporting objects in the channel.

• Korean Journal of Optics and Photonics
• /
• v.18 no.6
• /
• pp.441-446
• /
• 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 for Noise and Vibration Engineering Conference
• /
• 2007.11a
• /
• pp.1224-1230
• /
• 2007

In this study, a new modal test method is presented to evaluate vibration characteristic of the nano imprint stage system. Since it is difficult to measure vibration level without contacting the machine component, non contacting modal test method, laser scanning system is ultrared. Finite element analysis results are compared with the modal test results.

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2007.11a
• /
• pp.26.2-26.2
• /
• 2007

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2009.10a
• /
• pp.433-434
• /
• 2009

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2012.10a
• /
• pp.89-90
• /
• 2012