Efficient and cost-effective polarized-light backlights for LCDs

Hugo J. Cornelissen, Henri J.B. Jagt, Dirk J. Broer, Cees W.M. Bastiaansen

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

4 Citaten (Scopus)
1 Downloads (Pure)

Samenvatting

To improve the optical efficiency and to reduce the number of optical components of LCD backlighting systems, two types of polarized-light backlights have been made from micro-structured birefringent polymeric layers. One type uses uniaxially oriented PEN and PET foils that have been structured by diamond-tool machining or by hot-embossing, and subsequently laminated onto a flat PMMA light guide. The second type uses a liquid crystalline polymeric layer laminated onto a micro-structured light guide. S-polarized light is preferentially extracted from the light guides. The efficiency has been measured to be 1.6-1.7 times higher than for a conventional backlight. Costs, thickness and complexity are decreased since no micro-prismatic brightness enhancement foils or reflective polarizer foils are needed.

Originele taal-2Engels
TitelEighth International Conference on Solid State Lighting
Plaats van productieBellingham
UitgeverijSPIE
Aantal pagina's10
ISBN van geprinte versie9780819472786
DOI's
StatusGepubliceerd - 12 nov. 2008
EvenementThe International Society for Optical Engineering (SPIE) - San Diego, CA, Verenigde Staten van Amerika
Duur: 11 aug. 200813 aug. 2008

Publicatie series

NaamProceedings of SPIE - The International Society for Optical Engineering
Volume7058
ISSN van geprinte versie0277-786X

Congres

CongresThe International Society for Optical Engineering (SPIE)
Land/RegioVerenigde Staten van Amerika
StadSan Diego, CA
Periode11/08/0813/08/08

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