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44.4: RGB-LED Backlights for LCD-TVs with 0D, 1D, and 2D Adaptive Dimming

2006; Wiley; Volume: 37; Issue: 1 Linguagem: Inglês

10.1889/1.2433283

2168-0159

Tetsuya Shirai, Sho Shimizukawa, Tomokazu Shiga, S. Mikoshiba, K. Käläntär,

Advanced optical system design

SID Symposium Digest of Technical PapersVolume 37, Issue 1 p. 1520-1523 44.4: RGB-LED Backlights for LCD-TVs with 0D, 1D, and 2D Adaptive Dimming T. Shirai, T. Shirai Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorS. Shimizukawa, S. Shimizukawa Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorT. Shiga, T. Shiga Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorS. Mikoshiba, S. Mikoshiba Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorK. Käläntär, K. Käläntär Nippon Leiz Corporation, R&D Center, Tama-shi, Tokyo 206-0025, JapanSearch for more papers by this author T. Shirai, T. Shirai Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorS. Shimizukawa, S. Shimizukawa Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorT. Shiga, T. Shiga Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorS. Mikoshiba, S. Mikoshiba Dept.of Electronic Engineering, The Univ. of Electro-Communications, Chofu, Tokyo 182-8585, JapanSearch for more papers by this authorK. Käläntär, K. Käläntär Nippon Leiz Corporation, R&D Center, Tama-shi, Tokyo 206-0025, JapanSearch for more papers by this author First published: 05 July 2012 https://doi.org/10.1889/1.2433283Citations: 55AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Output luminance of an RGB-LED backlight for an LCD-TV was adaptively dimmed along with input video signal in fashions of 0D (uniform dimming), 1D (line dimming), and 2D (local dimming). It has been proven experimentally that the backlight power can be reduced to 83%, 71%, and 50%, respectively, for a typical sample movie having 8.0% post-gamma average picture level (which is equal to the average luminance level). Further simulation study revealed that the power consumption can be reduced to the value equal to that of the post-gamma APL. References T. Shiga, S. Mikoshiba, "Reduction of LCTV Backlight Power and Enhancement of Gray Scale Capability by Using Adaptive Dimming Technique", SID Symposium Digest 34, pp. 1364–1367, 2003. 10.1889/1.1832539 Google Scholar N. Takeo, S. Kuwahara, T. Shiga, S. Mikoshiba, "Application of Adaptive Dimming Technique to a 17-in. LCTV for Reducing Backlight Power", Proc. IDW '04 Digest, pp. 671–674, 2004. Google Scholar T. Shiga, S. Kuwahara, N. Takeo, S. Mikoshiba, "Adaptive Dimming Technique with Optically Isolated Lamp Groups", SID Symposium Digest 36, pp. 992–995, 2005. 10.1889/1.2036617 Google Scholar J.H. Choi, H.R. Chu, J.Y. Bang, H.J. Park, H.-J. Hong, M. Lim, E.Y. Oh, and I.-J. Chung, "Backlight for Large-area LCD-TVs using Light Emitting Diodes", Proc. IMID '05, pp. 1153–1156, 2005. Google Scholar H.-J. Hong, K.-J. Kwon, J.-H. Choi, S.-H. Lee, H.-M. Hwang, M. Lim, E.-Y. Oh, and I.-J. Chung, "Area-Focused Luminance Control Backlight for LCD TV applications", Proc. IMID '05, pp. 1157–1160, 2005. Google Scholar Citing Literature Volume37, Issue1June 2006Pages 1520-1523 ReferencesRelatedInformation