摘要 |
An electromechanical image display includes a box-structure of cups arranged in a row and column matrix. A non-rotatable axle for each column in the matrix passes through each of the cups in a column. The axle holds display elements which are rotatable on the axle. At least one electric-field-generating conducting plate in each cup is connected to an electrical source. A display element for each cup is a parallelepiped having six faces with a tunnel through the geometric centers of two of the six faces to permit its installation on the axle. The display element is an electret, or contains one or more electrets, that rotationally responds to the electric field of the electric-field-generating conducting plate. |