UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Modelling of a colour-separating backlight with internal mirrors

Selviah, D.R.; Wang, K.; (2004) Modelling of a colour-separating backlight with internal mirrors. Presented at: Society for Information Display's 2004 International Symposium, Seminar, and Exhibition, Seattle, USA. Green open access

[thumbnail of 2842.ppt] MS PowerPoint
2842.ppt

Download (443kB)

Abstract

Liquid Crystal Displays (LCDs) require an advanced illumination system to give high contrast and power efficiency. The aim is to design a power efficient backlight which collimates light rays normal to the display. Non-sequential ray trace modelling is a potential tool for the design of the total internal reflection (TIR) backlight. Light emitted from red, green and blue chip LEDs enters the multimode lightguide emerging at periodic grating coupler "windows“ but some light is lost out of the bottom of the guide. An array of micro-mirrors within the guide compensates for this loss. Our model allows us to optimize the distance of the micro-mirrors from the grating windows, the mirror size and guide dimensions to give improved optical uniformity and efficiency.

Type: Poster
Title: Modelling of a colour-separating backlight with internal mirrors
Event: Society for Information Display's 2004 International Symposium, Seminar, and Exhibition
Location: Seattle, USA
Dates: 25-27 May 2004
Open access status: An open access version is available from UCL Discovery
Language: English
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/2842
Downloads since deposit
800Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item