Manufacturing method of plate-shaped member, intermediate of plate-shaped member and plate-shaped member

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a plate-shaped member, an intermediate of the plate-shaped member, and a plate-shaped member in which the shape defect is suppressed, which can suppress the shape defect of the plate-shaped member. After providing a first dividing groove 12a on a first main surface of a base material of a plate-shaped member (wavelength conversion member) having a first main surface and a second main surface facing each other. A step of providing a second dividing groove 13a on the second main surface in a direction intersecting the first dividing groove in a plan view to form an intermediate 11 of a plate-shaped member, and along the first dividing groove. When cutting the intermediate body of the plate-shaped member, the intermediate body of the plate-shaped member is cut along the first dividing groove by pressing from the second main surface 11b side, and then the intermediate body of the plate-shaped member is cut into the second dividing groove. An intermediate body of a plate-shaped member that is cut into a second dividing groove by pressing from the first main surface 11a side when the intermediate body of the plate-shaped member is cut along the line. [Selection diagram] Fig. 4