Polarized light out‐coupling from lightguides for LCDs

Abstract

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.

In-situ fabrication of polymer microsieves for μTAS by slanted angle holography

“…Here, the photoresist is exposed with the sample tilted over an angle a with respect to the bisector of the angle between the two interfering laser beams (Fig. 1b), as used in, e.g., the fabrication of slanted gratings (Van Heesch et al 2005).…”

P-133: Color Separation Element with Concentric Symmetry for Display Application

“…Diffractive optical elements to select colors have also been proposed for direct-view applications [3][4]. Electrically switchable color selection structures are another idea used to optimize color in image capture systems [5], and in colorsequential micro-display applications [6].…”