申请人:Gosudarstvenny Nauchny Tsentr Rossiiskoi Federatsii "Niopik" (GNTS RF "Niopik")
公开号:US20040265510A1
公开(公告)日:2004-12-30
The invention relates to light polarizers and devices for displaying information based on said polarizers, in particular to a liquid crystal indicating (LCI) element, and can be used on flat liquid-crystal displays, including those of the projection type, luminairs, optical modulators, matrix systems of light modulation, etc. The objective of the invention is to provide a highly efficient polarizer providing an improved brightness and color saturation of an LCI element based on such polarizer. This objective is to be attained by using, in manufacture of a polarizer and an LCI element based on such polarizer, at least one birefringent anisotropically absorbing layer having at least one refraction index that grows as the polarized light wavelength increases., i.e., having the abnormal dispersion. The use of said layer allows creation of polarizers of both the dichroic and interference types. Further, the use of said layer allows creation of a polarizer that provides, in a relatively simple design, conversion of practically all energy of a non-polarized radiation into the polarized radiation. The above-recited peculiarities of the claimed polarizer based on a birefrigent anisotropically absorbing layer having the abnormal dispersion allow creation of both a color and monochromatic LCI element distinguished for a higher brightness, color saturation, good angular characteristics and absence of shadows.
本发明涉及光偏振器和基于所述偏振器的信息显示装置,特别是液晶显示(LCI)元件,可用于平面液晶显示器,包括投影式显示器、发光器、光学调制器、光调制矩阵系统等。本发明的目的是提供一种高效偏振片,为基于这种偏振片的 LCI 元件提供更好的亮度和色彩饱和度。要实现这一目标,需要在制造偏振片和基于这种偏振片的 LCI 元件时,使用至少一个双折射各向异性吸收层,该层至少具有一个折射率,该折射率随着偏振光波长的增加而增加,即具有异常色散。使用上述层可以制造出二向色和干涉两种类型的偏振器。此外,使用上述层还可以制造出一种偏振器,这种偏振器的设计相对简单,几乎可以将非偏振辐射的所有能量转换为偏振辐射。上述基于双折射各向异性吸收层的偏振片具有异常的分散性,因此可以制造出彩色和单色的 LCI 元件,其特点是亮度高、色彩饱和度高、角度特性好且无阴影。