| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflective liquid crystal display element 11 with high brightness and high contrast by possessing excellent reflection efficiency for reflecting incident light in a bright state and excellent absorption efficiency for absorbing the incident light in a dark state. <P>SOLUTION: In the reflective liquid crystal display element, a negative nematic liquid crystal is sandwiched between a counter substrate 12 and an array substrate 13, is provided with an optical absorption layer 32 in the array substrate 13, and provided with a transparent structure 23 in which a cross sectional shape projected to the side of the array substrate 13 is an isosceles triangle in the counter substrate 12. A refractive index difference between a liquid crystal layer 14 and the transparent structure 23 is controlled by turning-on and off of an electric field to the liquid crystal layer 14. The light incident on the transparent structure 23 from the side of the counter substrate 12 is emitted from the side of the counter substrate 12 by wholly reflecting the light on an interface of the transparent structure 23 and the liquid crystal layer 14 if the refractive index of the liquid crystal layer 14 has a smaller refractive index than the refractive index of the transparent structure 23. The light incident on the transparent structure 23 from the side of the counter substrate 12 is adsorbed in the light absorption layer 32 by transmitting the interface of the transparent structure 23 and the liquid crystal layer 14 if the refractive index difference is such that the liquid crystal layer 14 has a refractive index equal to the refractive index of the transparent structure 23. <P>COPYRIGHT: (C)2008,JPO&INPIT |
