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    • 14. 发明授权
    • Multi-colored liquid crystal displays
    • 多色液晶显示屏
    • US4097130A
    • 1978-06-27
    • US776603
    • 1977-03-11
    • Herbert S. Cole, Jr.
    • Herbert S. Cole, Jr.
    • G02F1/1347G02F1/13
    • G02F1/13475
    • A transmissive liquid crystal display actuatable to provide each of a plurality of different colors utilizes at least one parallel-nematic or twisted-nematic liquid crystal cell each having a dichroic dye dissolved therein for absorbing light each of a different color. The cells are sequentially arranged between a pair of polarizing elements have their axes of polarization perpendicular to one another. The polarizing element nearest an observer contains a dichroic dye for absorbing an additional wavelength (color) of visible light and may be selectively actuatable. By energizing different combinations of the cells from their quiescent to active conditions, different combinations of visible light wavelengths are absorbed to change the color of light transmitted through the display. Maximum-color displays, providing up to 2.sup.N different colors (wherein N is the number of activatable liquid crystal elements) utilize one or two twisted-nematic liquid cells closest to the dichroic exit polarizer, with the remainder of the active liquid crystal cells being of the parallel nematic type.
    • 可致动以提供多种不同颜色的透射式液晶显示器利用至少一个平行向列型或扭曲向列型液晶单元,每个液晶单元具有溶解在其中的二色性染料,用于吸收不同颜色的光。 电池顺序地布置在一对偏振元件之间,它们的偏振轴线彼此垂直。 最接近观察者的偏振元件包含用于吸收可见光的附加波长(颜色)的二色性染料,并且可以选择性地致动。 通过将电池的不同组合从静态激活到活动状态,可吸收不同的可见光波长的组合以改变透过显示器的光的颜色。 最多可以提供2N种不同颜色(其中N是可激活的液晶元件的数量)的彩色显示器利用最靠近二向色出射偏振器的一个或两个扭曲向列型液晶单元,其余的活性液晶单元为 平行向列型。