| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a display that generates light reflection of a substantially neutral color when a liquid crystal of the display is in a bright state. <P>SOLUTION: A display sheet 10 comprises a substrate 15 carrying layers of materials including: a polymer-dispersed cholesteric liquid crystal layer 30 having a first high reflection state within a visible light spectrum and a second less reflective state within the visible light spectrum, where the reflection states are changeable by an electric field between the two states which can be maintained in the absence of an electric field; a first transparent conductor 20 disposed over the liquid crystal layer 30; a complementary light-absorbing layer 35 below the liquid crystal layer, which has relatively high light absorption within the spectrum of the high reflection state of the liquid crystal layer and has relatively less light absorption in the spectrum complementary to that of the high reflection state of the liquid crystal layer; and a reflective second conductor 40 under the complementary light-absorbing layer, which reflects light received from the complementary light-absorbing layer back through the complementary light-absorbing layer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
