| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive glass plate chemically reinforced and including a curved line shape part whose curvature radius is 20 mm or less in the outer periphery of a surface. <P>SOLUTION: The glass plate 10 is constituted by cutting after chemically reinforcing and has: a front surface layer 21 and a rear surface layer 22 in which compressive stress remains; an intermediate layer 23 formed between the front surface layer 21 and the rear surface layer 22 in which tensile stress remains; and areas 31, 32 in which compressive stress remains and an area 33 in which tensile stress remains, in side end surface 13 being a cut surface. In the glass plate, a border line 40 between the side end surface 13 being the cut surface and the surface 11 includes the curved line shape part 45, and the curved line shape part 45 has the curvature radius of 1 to 20 mm. <P>COPYRIGHT: (C)2013,JPO&INPIT |
