| 摘要 |
A light reflection and diffraction element able to enhance contrast when applied to an image display device, a light reflection and diffraction element array, and an image display device using the same are provided. In an off state of a light reflection and diffraction element 23, a portion exhibiting a cyclic structure for diffracting incident light in a region where reflective members having reflection surfaces are aligned is reduced by an unrequired diffracted light generation preventing means. For example, by covering connection regions of ribbon reflective members 31a, 31b, and 31c and the connection regions of ribbon reflective members 32a, 32b, and 32c by light shielding masks 43 and 44, incident light Li is prevented from being incident. Alternatively, the connection regions of the ribbon reflective members are reduced. Alternatively, the connection regions of the ribbon reflective members are eliminated by independent interconnects. Preferably, an uneven state of the reflection surfaces of the ribbon reflective members is controlled, and a correlation length is made small.
|
