Silicon-based reflective polymer-dispersed LC display for portable low-power applications

Geert P. S. Van Doorselaer; Nadine Carchon; Jean Van den Steen; Dieter Cuypers; Jan M.A. Vanfleteren; Herbert De Smet; Andre Van Calster

doi:10.1117/12.343860

26 March 1999 Silicon-based reflective polymer-dispersed LC display for portable low-power applications

Geert P. S. Van Doorselaer, Nadine Carchon, Jean Van den Steen, Dieter Cuypers, Jan M.A. Vanfleteren, Herbert De Smet, Andre Van Calster

Author Affiliations +

Proceedings Volume 3635, Liquid Crystal Materials, Devices, and Applications VII; (1999) https://doi.org/10.1117/12.343860
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Recently LCOS microdisplays are becoming available for personal IT applications, despite some problems which are less critical in poly silicon or amorphous silicon based displays. The most common problems which must be encountered are the polarization of the pixels and the light shielding of the silicon substrate. In this paper a methods proposed which solves the light shielding and pixel flatness problem. A non-critical back-end processing which can be applied outside the silicon foundry has been developed. The effectiveness of the light shielding on a working demonstrator display is shown. To avoid light losses caused by a polarization filter, a polymer dispersed LC has been chosen. By decreasing the cell gap we made the PDLC voltage compatible with a standard 3 micrometers CMOS process and its response fast enough to be used for video applications. It is shown that this choice is very suited in direct view and portable applications. The realized prototype has 3 bit grey levels and is video compatible and can be used in a number of applications, such as personal viewers, PDAs and data displays.

Citation Download Citation

Geert P. S. Van Doorselaer, Nadine Carchon, Jean Van den Steen, Dieter Cuypers, Jan M.A. Vanfleteren, Herbert De Smet, and Andre Van Calster "Silicon-based reflective polymer-dispersed LC display for portable low-power applications", Proc. SPIE 3635, Liquid Crystal Materials, Devices, and Applications VII, (26 March 1999); https://doi.org/10.1117/12.343860

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available