| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a contrast ratio higher than before by increasing only a reflection factor of white display nearly without increasing a reflection factor of black display by optimizing refractive indexes or thicknesses of respective layers. <P>SOLUTION: A back-side substrate 10 has its refractive index made lower than the refractive index no of liquid crystal molecules 33. A display-side substrate 20, on the other hand, has its refractive index made equal to or higher than the refractive index no of liquid crystal molecules 33. More preferably, the refractive index of the display-side substrate 20 is equal to or higher than a mean refractive index n<SB>LC</SB>of the whole liquid crystal layer 30 in a scatter state (white display state). Thus, the refractive indexes are optimized to increase only the reflection factor of white display nearly without increasing the reflection factor of black display, thereby making the contrast ratio higher than before. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
