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AssigneeAsahi Glass Company, Limited
InventorsSeiki OHARA, Kazutaka Ono, Tetsuya Nakashima, Hiroyuki Ohkawa
Estimating the term…
The present invention provides a cover glass for a display, having high durability to slow cracking and strong abraded strength even though a compressive stress is large and a depth of a compressive stress layer is deep. The present invention relates to a cover glass for a display, in which a depth of a compressive stress layer (DOL) is 30 μm or more, a surface compressive stress is 300 MPa or more, a position (HW) at which a compressive stress is half of a value of the surface compressive stress is a position of 8 μm or more from a glass surface, and the depth of the compressive stress layer (DOL) and the position (HW) at which the compressive stress is half of the value of the surface compressive stress satisfy the following formula: 0.05≦HW/DOL≦0.23 (1).
A cover glass for a display, wherein a depth of a compressive stress layer (DOL) is 30 μm or more, a surface compressive stress is 300 MPa or more, a position (HW) at which a compressive stress is half of a value of the surface compressive stress is a position of 8 μm or more from a glass surface, and the depth of the compressive stress layer (DOL) and the position (HW) at which the compressive stress is half of the value of the surface compressive stress satisfy the following formula:
A cover glass for a tablet PC with a touch sensor function, having a compressive stress layer in which a surface compressive stress is 300 MPa or more and a depth of the compressive stress layer (DOL) is 15 μm or more, and having a thickness of less than 0.8 mm, a size of 150 to 350 mm×100 to 250 mm and a mass of 150 to 1,000 g,
A method for manufacturing a cover glass for a display, the cover glass having a depth of a compressive stress layer of 30 μm or more and a surface compressive stress of 300 MPa or more, the method sequentially including the following steps (1) to (3):
Dependencies are inferred from the claim text.