Tile panel having convex and concave portions around substrate board, and method for production thereof

Claim 1

A prefabricated tile panel consisting essentially of a flat substrate board having substantially rectangular convex portions and substantially rectangular concave portions by turns around the sides of the substrate board, and a multiplicity of tiles arranged in a right-angled tetragon fashion and bonded onto the substrate board; said bonded tiles constituting a fundamental right-angled tetragon form, said rectangular convex portion being protruded by a given width of W from the fundamental tetragon form and having a side length of Lv; Lv being larger than W; said rectangular concave portion being set back by a width of at least W from the fundamental tetragon form and having a side length of Lc; the relationship between the W, Lv and Lc being defined by the following expression, Lc=Lv+2×W; said rectangular concave and convex portions being arranged regularly by turns on a basis of the shape of the fundamental tetragon form around the side of the substrate board in such a fashion that each side of the substrate board starts with one of the concave and convex portions followed by other portions by turns and ends with the other portion; the shape of a corner of the tile panel being substantially point-symmetrical with that of a diagonally opposite corner about the center of the diagonal; and the positions of the convex and concave portions present at one side of the tile panel substantially falling line-symmetrically under those of the other portions present at the opposite side thereof whereby said panel may be substantially symmetrically rotated within the plane of said flat substrate board 180° about the center of said panel.