Back Plate for Use with a Backlight Module, A Backlight Module Using the Same, and the Manufacturing Method Thereof

A back plate for use with a backlight module, comprising:

• a plate body;
• and
• a side wall extending out from an edge of the plate body, the side wall including:
• an inner wall body;
• an outer wall body;
• and
• a sandwich layer;
• wherein the outer wall body is formed by bending the wall body outward from a top of the inner wall body;
• the sandwich layer is formed by bending the outer wall inward from the other end of the outer wall opposite to the end connected to the inner wall body and is disposed between the inner wall body and the outer wall body;
• the inner wall body, the sandwich layer, and the outer wall body overlap each other in parallel and respectively have a thickness less than or equal to 0.12 mm.

A backlight module back plate manufacturing method, comprising:

• forming a side wall at an edge of a plate body, wherein the side wall includes a wall body, wherein the thickness of the side wall is less than or equal to 0.12 mm;
• and
• bending the side wall outward to form a bending part overlapping and being parallel to the wall body, wherein the bending part includes a plurality of bending sheets bending outward from the top of the wall body;
• each bending sheet overlaps and is parallel to the wall body;
• the thickness of each bending sheet is less than or equal to 0.12 mm.