Polarized light out-coupling from lightguides for LCDs.
New designs of lightguide systems, which emit linear polarized light with a high efficiency for transmissive and transflective LCD applications, are presented. These systems are equipped with nano- and/or micro-structured films or coatings, which emit highly collimated or diffuse linearly polarized light with a high efficiency. The films are based on polarization-selective scattering, reflection, or diffraction of light and their properties can be tuned to a large extent dependent on their envisioned application. For instance, edge-lit lightguide systems are discussed, which combine a range of desirable features such as a high transparency in direct view, a direct emission of light at normal angles to the plane of the lightguide, and a purely unidirectional out-coupling of light towards the LCD-side.
van Heesch
C M
CM
Eindhoven University of Technology, Faculty of Chemical Engineering and Chemistry, PO Box 513, 5600 MB Eindhoven, The Netherlands. c.heeschvan@tue.nl
Jagt
H
H
Sánchez
C
C
Cornelissen
H J
HJ
Broer
D J
DJ
Bastiaansen
C W M
CW