Patent attributes
A window member includes: a main surface; a first surface adjacent to a first side of the main surface in a first direction; a second surface adjacent to the first surface in the first direction; a third surface adjacent to a second side crossing the first side of the main surface in a second direction crossing the first direction; a fourth surface adjacent to the third surface in the second direction; and a first edge surface adjacent to the first surface and the third surface, wherein the main surface and a flat surface portion of the second surface form a first angle of 60 degrees or more and 120 degrees or less, and wherein the main surface and a flat surface portion of the fourth surface form a second angle of 60 degrees or more and 120 degrees or less.