| abstract |
A display medium is disclosed, comprising one or more compounds of formula I, and one or more compounds of formula II; wherein, R 1 -R 2 each independently represents an alkane having 1 to 9 carbon atoms alkyl, alkoxy, oxaalkyl, alkoxyalkyl, or, alkenyl or alkenyloxy having 2 to 9 carbon atoms. The display medium used in the smart meter display device of the present invention not only has excellent VHR characteristics, but also has good afterimage characteristics, thereby enhancing the reliability characteristics of the display medium. |