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A thermally actuated organic display device using thermo-chromatic polymer composite film with self-aligned patterns

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7 Author(s)
Yarimaga, O. ; Korea Adv. Inst. of Sci. & Technol., Daejeon, ; Maesoon Im ; Bonsang Gu ; Tae Won Kim
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A thermally actuated organic display device using UV-sensitive polydiacetylene (PDA)-polyvinyl alcohol (PVA) composite film with self aligned patterns is presented. A novel technique that patterns UV-sensitive organic films on a transparent substrate using a chip-embedded photomask is demonstrated. In contrast to related works regarding PDA and its composites, the current investigation represents the first attempt to realize a PDA derivative film for a thermal-display. Micro-pixels ranging from 200 mum to 700 mum size were fabricated on a glass substrate. The transition tones of the blue, red and yellow micro-pixels were successfully tuned with embedded micro-heaters under the PDA-PVA layer using both low-temperature (75degC) and high-temperature (180degC) activation processes. The retention time was measured and found to be less than a few hundred milliseconds.

Published in:

Micro Electro Mechanical Systems, 2008. MEMS 2008. IEEE 21st International Conference on

Date of Conference:

13-17 Jan. 2008