A high efficiency LCD employing a color-matching backlight system that consists of a collimation lenticular lens sheet, a blazed grating, and a focusing lenticular lens array is proposed and analyzed. The RGB lights that are collimated and dispersed from the collimation lenticular lens sheet and the blazed grating are incident on the RGB color filters by the focusing lenticular lens array. The color-matched transmittance was increased 183% and 121% for divergence angles of 2° and 11°, respectively, compared to a conventional backlight that does not use a blazed grating. The design, simulation, and experimental results for the prototype color-matching backlight system are presented.
© 2012 Optical Society of America
Original Manuscript: September 5, 2012
Revised Manuscript: November 20, 2012
Manuscript Accepted: November 22, 2012
Published: December 14, 2012
Chang-Gyun Son, Jin Seok Gwag, Jong Hoon Lee, and Jin Hyuk Kwon, "Analysis of a color-matching backlight system using a blazed grating and a lenticular lens array," Appl. Opt. 51, 8615-8620 (2012)