Improved lighting efficiency for active matrix liquid crystal displays

Kevin L. Walsh; John S. Wyler

doi:10.1117/12.177789

17 June 1994 Improved lighting efficiency for active matrix liquid crystal displays

Kevin L. Walsh, John S. Wyler

Proceedings Volume 2219, Cockpit Displays; (1994) https://doi.org/10.1117/12.177789
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Current AMLCD flat panels for military applications require intense backlighting to permit readability in full sunlit situations. This intense backlighting consumes a great deal of power, which limits their applications, reduces their reliability, and often necessitates cooling. One major factor aggravating this need for intense backlighting is the poor efficiency of the color filters. Not only do these filters have low transmittance, they are not spectrally pure which also results in poor color gamut. Smiths Industries suggests a new version of AMLCDs which does not have these lossy filters, but instead, utilizes a layer of green, red, and blue phosphors embedded within the AMLCD. These phosphors are energized by an ultraviolet backlight. This new technology could decrease the power consumption by a factor of four, while maintaining the same display luminance and contrast.

Citation Download Citation

Kevin L. Walsh and John S. Wyler "Improved lighting efficiency for active matrix liquid crystal displays", Proc. SPIE 2219, Cockpit Displays, (17 June 1994); https://doi.org/10.1117/12.177789

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