DOI QR코드

DOI QR Code

배면개구형 집광시트의 자체 정렬 특성

Self-aligning Characteristics of Optical Sheets with Apertures

  • 발행 : 2009.10.25

초록

액정표시장치의 고효율 백라이트 집광시트로 활용하기 위하여 배면 개구형 집광시트를 설계 및 분석하였다. Microlens array sheet, 피라미드 array sheet, 그리고 cone array sheet에 대해서 자체 정렬에 의한 배면 개구 형성 특성을 비교 분석한 결과, microlens array sheet가 가장 우수하였고, 다음으로 피라미드 array sheet였으며, cone array sheet가 가장 부적합하였다.

Optical sheets with apertures on the opposite side of the substrate are designed and analyzed in order to use them as high efficiency light concentration sheets in LCD edge-lit backlight. Formation of apertures by self-aligning exposure were analyzed for the microlens array sheet, pyramid array sheet, and cone array sheet and the microlens array sheet showed the best performance for the formation of apertures by the self-aligning exposure.

키워드

참고문헌

  1. S. Kobayashi, S. Mikoshiba, and S. Lim, LCD Backlight (John Wiley & Sons Inc., California, USA, 2009).
  2. P. Nussbaumyx, R. Volkely, H. P. Herzigy, M. Eisnerz, and S. Haselbeckz, “Design, fabrication and testing of microlens arrays for sensors and microsystems,” Pure Appl. Opt. 6, 617-636 (1997). https://doi.org/10.1088/0963-9659/6/6/004
  3. C.-T. Chen, C.-L. Chiu, and J.-B. Horng, “Design and fabrication of microlens by micro fluidic deposition method,” Proc. SPIE 5523, 323-329 (2004). https://doi.org/10.1117/12.557514
  4. S. H. Kim and H. H. Ko, “Simulation study on the dependence of properties of optical films on the microlenses for backlight applications,” in Proc. OSK Summer Meeting (Phoenixpark Hotel, Korea, Jul. 2008), pp. 451-452.
  5. G. Park, J. H. Yi, J. H. Kwon, J. H. Park, S. H. Kim, B. K. Kim, and J. K. Shin, “Comparitive study of the LCD backlight poptical sheets,” in Proc. OSK Annual Meeting (University of Seoul, Korea, Feb. 2009), pp. 545-546.
  6. M.-C. Choua, C. T. Panb, S. C. Shenc, M.-F. Chen, K. L. Lina, and S.-T. Wu, “A novel method to fabricate gapless hexagonal micro-lens array,” Sensors and Actuators A 118, 298-306 (2005). https://doi.org/10.1016/j.sna.2004.08.015
  7. M. He, X. Yuan, N. Q. Ngo, W. C. Cheong, and J. Bu, “Reflow technique for the fabrication of an elliptical microlens array in sol-gel material,” Appl. Opt. 42, 7174-7178 (2003). https://doi.org/10.1364/AO.42.007174
  8. F. T. O'Neill and J. T. Sheridan, “Photoresist reflow method of microlens production part I: background and experiments," Optic 113, 391–404 (2002). https://doi.org/10.1078/0030-4026-00186
  9. Y. H. Ju, J.-H. Park, J. H. Lee, J.-Y. Lee, K.-B. Nahm, and J.-H. Ko, “Study on the simulation model for the optimization of optical structures of edge-lit backlight for LCD applications,” Hankook Kwanghak Hoeji (Korean J. Opt. Photon.) 12, 25-30 (2008). https://doi.org/10.3807/JOSK.2008.12.1.025
  10. K. Kitamura, K. Okada, N. Fujita, Y. Nagasaka, M. Ueda, Y. Sekimoto, and Y. Kurata, “Fabrication method of double-microlens array using self-alignment technology,” Jpn. J. of Appl. Phys. 43, 5840–5844 (2004). https://doi.org/10.1143/JJAP.43.5840
  11. S.-I. Chang, J.-B. Yoon, H. Kim, J.-J. Kim, B.-K. Lee, and D. H. Shin, “Microlens array diffuser for a light-emitting diode backlight system,” Opt. Lett. 31, 3016-3019 (2006). https://doi.org/10.1364/OL.31.003016