Patent ID: 9651733
Date: 2017-05-16
CPC Classifications: B23K,G02B

Claim:
1. A method for manufacturing a back plate, comprising: preparing a main body, wherein the main body includes a bottom portion and at least one sidewall connected to the bottom portion, the sidewall has a plurality of grooves, and each of the grooves has a first side surface and a second side surface, wherein a first recess and a second recess corresponding to the first recess are respectively disposed on the first side surface and the second side surface; applying an external force on the bottom portion to form each of the bottom portion and the sidewalls into an arc shape, wherein the application of the external force causes the first side surface to contact the second side surface of each groove, and a hole portion to be formed between the first recess and the second recess; and after the step of applying the external force on the bottom portion, performing a connecting process to connect the first side surface to the second side surface of each groove, so that a peripheral edge of the hole portion is enclosed and the contact of the first side surface to the second side surface forms at least one connecting portion which extends from the peripheral edge of the hole portion.