Patent ID: 7142360

Claim:
A projection screen that displays an image by reflecting projected imaging light, the screen comprising: a polarized-light selective reflection layer having a cholesteric liquid crystalline structure and adapted to selectively reflect a specific polarized light component, wherein the polarized-light selective reflection layer selectively reflects the light component while diffusing the light component as a result of structural non-uniformity in the cholesteric liquid crystalline structure; the cholesteric liquid crystalline structure of the polarized-light selective reflection layer comprises a plurality of helical-structure parts that have different directions of helical axes; and the cholesteric liquid crystalline structure of the polarized-light selective reflection layer comprises a layered-structure area in which planes of nematic layers are layered and edge-shaped-structure parts that are formed in the layered-structure area by a partial edge dislocation of the planes of nematic layers, and the plurality of helical-structure parts that have different directions of helical axes that are obtained by directions of helical axes of the cholesteric liquid crystalline structure being changed in the edge-shaped-structure parts and their vicinity.