In accordance with the present invention, a transparent display, such as an LCD, is provided with back reflector having a plurality of reflecting facets angularly displaced with respect to the plane of the display cell so as to enhance contrast of the display without consumption of additional power while...http://www.google.com.au/patents/US5128787?utm_source=gb-gplus-sharePatent US5128787 - LCD display with multifaceted back reflector
