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49.1: New Concept for Improvement of White Color Balance in Hologram Back‐light Units
Author(s) -
Lee S. M.,
Choi H. W.,
Lee M. G.,
Min J. H.,
Choi J. S.,
Kim J. H.,
Kim S. I.,
Choi Y. S.,
Lee K. H.
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832538
Subject(s) - backlight , grating , holography , optics , diffraction grating , materials science , liquid crystal display , white light , optoelectronics , physics
We have improved a white color balance using multi‐grating period structure in the holographic backlight units that can be applicable to mobile LCD panel where several LEDs are placed at edge of guide plate as light sources. New H‐LGP is based on the characteristics of grating and its diffraction angle can be determined by specific grating period. With this idea, hologram backlight unit can realize not only lower weight and less power consumption but also higher light utilization by eliminating couple of prismatic sheets which have been widely used in conventional unit inevitably.