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一种利用向列-胆甾相(NC)液晶的高亮度、大信息容量新型多色投影显示仪业已开发成功.通过研究NC相液晶层焦锥态中的光散射,作者发现,由于衍射散射,透射率取决于光的波长,而且透过液晶层的光的颜色,可由双折射效应和液晶层厚度来控制.已制作出640×400象素的多色投影显示仪,采用的是双层结构液晶板,在焦锥态下各层可分别透过绿光和红光.两种透过色的Munsell色度值为6.由于向列态的高透射率和采用互补色的减法混色,该装置还可显示优良的白色和黑色.
A new multi-color projection display instrument using high brightness and large information capacity of nematic liquid crystal (NC) liquid crystal has been successfully developed.By studying the light scattering in the conic state of NC liquid crystal layer, the authors found that due to the diffraction scattering , The transmittance depends on the wavelength of light and the color of the light passing through the liquid crystal layer can be controlled by the birefringence effect and the thickness of the liquid crystal layer A multi-color projection display device of 640 × 400 pixels has been produced using a double layer The structure of the liquid crystal panel, in the focal conic state, each layer can be transmitted through the green and red light respectively Munsell chromaticity value of the two transmission color is 6. Due to the high transmittance of the nematic state and subtractive color mixing with complementary colors, The unit also shows excellent white and black.