Progress of LED backlights for LCDs

Journal of the Society for Information Display

Volumn 16, Issue 2, 2008, Pages 287-310

  Anandan, Munisamy ^a  

^a Organic Lighting Technologies   (United States)

Author keywords

Backlight; Backlight response; CCFL; Color gamut; Dimming; Directly lit; Edge lit; Image quality; LCD; LED; Light guide; PWM

Indexed keywords

BACKLIGHT; BACKLIGHT RESPONSE; CCFL; COLOR GAMUT; DIMMING; DIRECTLY LIT; EDGE LIT; LCD; PWM;

AIRCRAFT SIGNAL LIGHTS; CELLULAR TELEPHONE SYSTEMS; ELECTROMAGNETIC WAVES; FLUORESCENT LAMPS; IMAGE QUALITY; LAPTOP COMPUTERS; LIGHT; LIGHT SOURCES; LIGHTING; TELECOMMUNICATION EQUIPMENT;

LIQUID CRYSTAL DISPLAYS;

EID: 54149083008     PISSN: 10710922     EISSN: None     Source Type: Journal    
DOI: 10.1889/1.2841864     Document Type: Conference Paper

References (51)

1. T. S. Perry, "Today LEDs come in yellow, orange, green, turquoise, blue-violet and even white. But first there was red- and first there was Nick Holonyak," IEEE Spectrum (June 2003).
2. S. Nakamura, T. Mikai, and M. Shenoh, Appl. Phy. Lett. 64, 1687 (1994).
3. LED Journal (March/April 2007).
4. Osram Web site (June 2007).
5. M. Anandan, "LED backlight: Enhancement of picture quality on LCD screen," Proc. 9th Asian Symposium on Information Display, 130-134 (October 2006).
6. M. Grundmann, J. Haaheim, A. Moshar, J. Summers, and S. Nakamura, "Blue InGaN quantum well LED fabrication," Internal Report, University of California, Santa Barbara (Aug. 2002).
7. LED Magazine (Aug., 2006).
8. M. Anandan, "LED backlight - a boost to LCD-TV" Proc. Second Americas Display Engineering and Applications Conference, 25-29 (October 2005).
9. D. Delbeke, R. Bockstaele, P. Bienstman, R. Baetes, and H. Benisty, "High efficiency semiconductor resonant cavity light emitting diodes: A review," IEEE J. Selected Topics Quantum Electron. 8, No. 2 (March/April 2002).
10. N. Shibata, Proc. Asia Display/IDW '01, 1035-1038 (2001).
11. H. Amano et al., "Metalorganic vapor phase epitaxial growth of a high quality GaN film using an AlN buffer layer," Appl. Phy. Lett. 48, 353 (1986).
12. S. Nakamura,"GaN growth using GaN buffer layer," Jpn, J. Appl. Phy. 30, L1705 (1991).
13. E. Bretschneider, "Fundamentals of high brightness LEDs," Los Angeles Chapter Seminar on LEDs in Displays (January 13, 2006).
14. D. Steigerwald et al., "III-V nitride semiconductors for high performance blue and green light emitting devices," JOM 49(9), 18-23 (1997).
15. F. Nguyen, "Recent advances in LED technology for LCD backlighting," Proc. Americas Display Engineering & Applications Conference (ADEAC), 34-37 (2005).
16. N. Harada, I. Suehiro, and Y. Hotta, "Direct LED backlight system using novel high refractive polymer," Proc. IDW "04, 735-738 (2004).
17. T. Fujii, R. Sharma, E. L. Hu, S. P. Danbaars, and S.Nakamura, "Increase in the extraction efficiency of GaN-based light emitting diodes by surface roughening," Appl. Phys. Lett. 84, 855 (2004).
18. F. Steranka, "Performance roadmaps for high power LEDs: Where do we stand and where are we headed?" Strategies in Light (2007).
19. H.-Y. Ryu et al, "Enhancement of light extraction from two-dimensional photonic crystal slab structures," IEEE J. Selected Topics Quantum Electron. 8, No. 2, 231-237 (2002).
20. M. Zoorob and G. Flinn, "Photonic quasi-crystals boost LED emission characteristics," LED Magazine (August 2006).
21. S.-K. Kim, H. K. Cho, J. Jnag, J. S. Lee, and Y.-H. Lee, "Light extraction enhancement from GaN based photonic crystal blue light emitting diodes," Proc. Intl. Conf. Display LEDs (ICDL), 341-343 (Jan. 2007).
22. L. Silverstein, "Color in electronic displays," SID Seminar Lecture Notes 11 (2003).
23. M. Anandan, "Backlight for LCD TV/monitor," SID Seminar Lecture Notes (2006).
24. Lumiled Web site.
25. Lumiled Web site.
26. H. Suglura et al., "Wide color gamut and high brightness assured by the support of LED backlighting in WUXGA LCD Monitor," SID Symposium Digest Tech. Papers 35, 1230-1233 (2004).
27. M. Anandan, "LCD backlighting," Seminar Lecture Notes (2003).
28. K. Kalantar, S. Matsumoto, T. Onishi, and K. Takizawa, "Optical micro-deflectors based functional light guide plate for backlight unit," SID Symposium Digest Tech. Papers 31, 1029-1031 (2000).
29. A. Funamoto et al., "Prism sheet-less high brightness backlight system for mobile phone," Proc. IDW' 04 (2004).
30. A. Nagasawa et al., "A novel backlight system with unified component," Proc. IDW "05, 1285-1288 (2005).
31. H. Suzuki et al., "Twisted S-shaped light pipe for highly efficient coupling between LED and light guide in backlight system," SID Symposium Digest Tech. Papers 38, 38-41 (2007).
32. J. Anderson et al., "New backlight reflector and front film for improved direct-lit LED backlights for LCD TV," SID Symposium Digest Tech. Papers 38, 1236-1239 (2007).
33. K. Kakinuma et al., "Technology of wide color gamut backlight with RGB light emitting diode for liquid crystal display television," SID Symposium Digest Tech. Papers 38, 1232-1236 (2007).
34. J. J. Yoo et al., "Side light type field sequential color LCD using divided light guide plates," Proc. IDRC (2003).
35. K. Kalantar et al., "Spatio-temporal scanning backlight for color field sequential optically compensated bend liquid crystal display," J. Soc. Info. Display 14/2, 151-159 (2006).
36. F. Nguyen, "Recent advances in LED technology for LCD backlighting," Proc. Second Americas Display Engineering and Applications Conf., 34-37 (2005).
37. OSRAM Booth, SID Exhibition, 2007.
38. T. Shiga and S. Mikoshiba, "Reduction of LCTV backlight power and enhancement of gray scale capability by using an adaptive dimming technique," SID Symposium Digest Tech. Papers 34, 1364-1367 (2003).
39. T. Shiga et al., "Adaptive dimming technique with optically isolated lamp groups," SID Symposium Digest Tech. Papers 36, 992-995 (2005).
40. T. Shirai et al., "RGB-LED backlight for LCD-TV with 0D, 1D and 2D adaptive dimming,"SID Symposium Digest Tech. Papers 37, 1520-1523 (2006).
41. H. Seetzen and L. Whitehead, "A high dynamic range display using low and high resolution modulators," SID Symposium Digest Tech. Papers 34, 1450-1453 (2003).
42. Samsung Booth, SID Exhibition, 2007.
43. A. Konno et al., "RGB color control system for LED backlight in IPS-LCD TVs," SID Symposium Digest Tech. Papers 36, 1380-1383 (2005).
44. H. Pan et al., "LCD Motion blur analysis and modeling based on temporal PSF," SID Symposium Digest Tech. Papers 37, 1704-1707 (2006).
45. T. Kurita, "Motion adaptive edge compensation to decrease motion blur of hold type display," SID Symposium Digest Tech. Papers 36, 1586-1589 (2005).
46. N. Fisekovic et al., "Improved motion picture quality of AM-LCD using scanning backlight," Proc Asia Display/IDW '01, 1637-1640 (2001).
47. M. Schu et al., "Frame rate conversion IC for full HD 120 Hz LCD flat panel displays," SID Symposium Digest Tech Papers 38, 1089-1092 (2007).
48. LG Philips Presentation, "LED backlight Technology," SID Texas Chapter Seminar (March, 2006).
49. S.-Y. Lee et al., "A novel application of high efficiency RGB LED driving and control system for LED backlight in LCD," Proc. Third Americas Display Engineering and Applications Conference, 179-182 (2006).
50. K.-C. Lee, S.-H. Moon, B. Berkeley, and S.-S. Kim, "LED backlight feedback control system with integrated amorphous silicon color sensor on an LCD panel," J. Soc. Info. Display 14, No. 2 (2006).
51. D. Cho et al., "New X-Y channel driving method for LED backlight system in LCD TVs," Proc, 7th IMID '07, 1001-1004 (2007).