Browse > Article
http://dx.doi.org/10.3807/KJOP.2010.21.2.053

A Study on an Integrated Light Guide Plate  

Lee, Yun-Mi (Department of Optical Engineering, Kongju National University)
Lee, Jun-Ho (Department of Optical Engineering, Kongju National University)
Jeon, Eun-Chae (Korea Institute of Machinery & Materials)
Publication Information
Korean Journal of Optics and Photonics / v.21, no.2, 2010 , pp. 53-60 More about this Journal
Abstract
An integrated light guide plate (LGP) was designed for liquid crystal displays (LCD) without using prism and diffuser sheets. The integrated LGP is textured with micro-patterns on both the top and bottom surfaces. The textures effectively substitute for a single prism-sheet and a diffuser sheet in LCD displays without decreasing the brightness and uniformity. A LCD display with our integrated light guide is simulated to give average luminance of 4560 cd/$m^2$, luminance uniformity of 83% horizontal viewing angle $60^{\circ}$ and vertical viewing angle $56^{\circ}$. Therefore an ultra thin (slim) back light unit can be constructed with fewer optical sheets, which reduces the manufacturing cost and so improves price competitiveness.
Keywords
Liquid crystal display; Backlight unit; Light-guide plate;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 S. K. Kim, Y. E. Yoo, Y. H. Seo, T.-J. Jae, K.-H. Kim, and D.-S. Choi, “Fabrication of Ni stamper based on micro-pyramid structures for high uniformity light guide panel(LGP),” J. Kor. Soc. Pre. Eng. 23, 174-178 (2006).   과학기술학회마을
2 J. H. Lee, W. Chang, and D.-S. Choi, “LED light couplerdesign for a ultra thin light guide,” J. Opt. Soc. Korea 11,113-117 (2007).   DOI
3 Y. H. Ju, J.-H. Park, J. H. Lee, J.-Y.Lee, K.-B. Nahm, J.-H.Ko, and J. H. Kim, “Study on the simulation model forthe optimization of optical structures of edge-lit backlightfor LCD applications,” J. Opt. Soc. Korea 12, 25-30 (2008).   DOI
4 LG-Philips Display(Ltd.), “Backlight unit and liquid crystal display using the same,” Korea Patent 10-2006-0045640 (2006).
5 NanoLCD(Ltd.), “The pattern of multi-ability Light-Guide- Panel for back light unit,” Korea Patent 10-2003-0017009 (2003).
6 T. J. Jae, B. D. Kim, E. C. Jeon, J. S. Youn, Y. E. Ryu,D.-S. Choi, and E. S, Lee, “Manufacturing micro prismarrayed structure using milling,” in Proc. KSMPE SpringMeeting (Jinju National University, Korea, Jun. 2009), pp.191-194.
7 D. H. Lee, MSC thesis, “Optimization and analysis of LCDbacklight unit,” Yeungnam University (2007).
8 J. D. Foley, “Computer graphics: principles and practice inC,” (Addison Wesley, USA, 1992).
9 Y. S. Kim and S. Lim, “Design of high uniformity LEDbacklight,” SID International Symposium Digest of TechnicalPapers 36, 1321-1325 (2005).   DOI
10 K. Kalantar, “Optical design of light-guide plates forillumination systems used in mobile phones and PDAs,” inProc. The 8th International Display Workshops (IDW '01)(Nagoya Congress Center, Nagoya, Japan, 2001), pp.517-520.
11 D. Feng, X. Yang, G. Jin, Y. Yan, and S. Fan, “Integrated light-guide plates that can control the illumination angle for liquid crystal display backlight system,” Proc. SPIE 6034, 603406 (2006).   DOI
12 Y. E. Ryu, T. H. Kim, S. G. Kim, Y. H. Seo, T. J. Jae,and D. S. Choi, “A study on the manufacturing of micropatternedlight guide,” in Proc. Korea Soc. Pre. Eng. 2006(Gyeongju Kyoyuk Munhwa Hoekwan, Gyeongju, Korea,2006), pp. 535-534.