Method of manufacturing plate member and plate member
AssigneeFurukawa Electric Co., Ltd.
InventorToshihiro NAKAMURA
Life of this patent
Estimating the term…
Abstract
There is provided a method of manufacturing a plate member including preparing a base plate member having main faces, and performing etching by immersing at least part of the base plate member in an etching liquid while controlling a lowering speed of a liquid surface of the etching liquid on the main faces of the base plate member to a desired lowering speed.
Claims4
A plate member manufactured by using a manufacturing method that includes preparing a base glass plate having a curvature correcting area which extends in a longitudinal direction of the base glass plate and in which a thickness of the base glass plate between the main faces increases from each facet toward a center portion in a width direction, and softening the base glass plate by heating the base glass plate in a heating furnace to stretch the base glass plate so as to have a desired thickness, the plate member wherein
- a difference between a maximum value and a minimum value of the thickness between the main faces, over the width of the plate member is equal to or less than 50 μm.
A plate member manufactured by using a manufacturing method that includes preparing a base glass plate having a curvature correcting area which extends in a longitudinal direction of the base glass plate and in which a thickness of the base glass plate between the main faces increases from each facet toward a center portion in a width direction, and softening the base glass plate by heating the base glass plate in a heating furnace to stretch the base glass plate so as to have a desired thickness, the plate member wherein
- a difference between a maximum value and a minimum value of the thickness between the main faces, over the width of the plate member is equal to or less than 10 μm.
A plate member manufactured by using a manufacturing method that includes preparing a base glass plate having a curvature correcting area which extends in a longitudinal direction of the base glass plate and in which a thickness of the base glass plate between the main faces increases from each facet toward a center portion in a width direction, and softening the base glass plate by heating the base glass plate in a heating furnace to stretch the base glass plate so as to have a desired thickness, the plate member wherein
- a difference between a maximum value and a minimum value of the thickness between the main faces, over the width of the plate member is equal to or less than 1 μm.
A plate member manufactured by using a manufacturing method that includes preparing a base glass plate that has spacer portion forming areas formed to have a predetermined width starting from each facet in a width direction and curvature correcting areas formed to be adjacent to the spacer portion forming areas in a longitudinal direction in which, in each of the curvature forming areas, a thickness of the base glass plate between the main faces increases from each facet side toward a center portion in the width direction, and, in each of the spacer portion forming areas, the thickness of the base glass plate between the main faces is constant or increases from each facet toward the center portion more gently than that in the adjacent curvature forming area, and heating the base glass plate in heating furnace to soften and stretch the base glass plate so as to have a predetermined thickness, the method comprising:
- spacer portions formed to have a predetermined width starting from each facet in the width direction;
- and
- a parallel portion formed between the spacer portions in which the main faces are parallel to each other, wherein
- a difference between a maximum value and a minimum value of the thickness between the main faces in the parallel portion is equal to or less than 10 μm.
Dependencies are inferred from the claim text.