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68.4: Optical Properties of Visible‐Light Excited Phosphor Sheet (VEPS) System
Author(s) -
Xiao BoWen,
Hung ChienHsiang,
Huang HsinTao,
Huang YiPai,
Tien ChungHao,
Tsai ChuangChuang,
Shieh HanPing D.,
Chen Jerry,
Lin Jeremy,
Chang WinChi
Publication year - 2009
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 - 10.1889/1.3256463
Subject(s) - backlight , phosphor , materials science , optoelectronics , excited state , optics , light emitting diode , light guide , white light , liquid crystal display , light source , physics , atomic physics
The optical properties in Visible‐light Excited Phosphor Sheet (VEPS) system were discussed and calculated. Different to the conventional LED backlight with white LEDs, VEPS system applies blue LED chips to excite the extrinsic flat YAG‐phosphor layer to perform uniform and flat lighting, that can further reduce the backlight thickness. A theoretical model was developed to optimize the structure of VEPS system. Consequently, the optimized result was demonstrated on the small‐Sized VEPS module.