REFLECTIVE LIQUID CRYSTAL DISPLAY WITH IMPROVED CONTRAST
摘要
A display (200) includes a slanted fringe volume hologram (206) or other optical element that steers light that passes into and out of the display (200) so as to provide angular separation between unmodulated scattered light and modulated reflected light. As a result of the angular separation the effective contrast of the display (200) is improved. By placing the slanted fringe volume hologram (206) below a front polarizer of the display a further reduction in the amount of unmodulated scatter light is achieved. The slanted fringe volume hologram is preferably a hologram of a diffusive object (328), and consequently exhibits a degree of light diffusion that results in a viewing zone of an appreciable angular extent.
申请公布号
WO03038509(A3)
申请公布日期
2003.12.04
申请号
WO2002US34474
申请日期
2002.10.28
申请人
MOTOROLA, INC., A CORPORATION OF THE STATE OF DELAWARE