Abstract: A tempered glass screen protector includes a substrate structure, a protection structure, and an adhesion structure. The substrate structure has a transparent portion and a non-planar decorative portion extended from the transparent portion. The protection structure includes a first transparent adhesive layer disposed on the bottom surface of the transparent portion and a transparent protective layer disposed on the first transparent adhesive layer. The adhesion structure includes a first adhesive layer disposed on the bottom surface of the non-planar decorative portion, a base layer disposed on the first adhesive layer, and a second adhesive layer disposed on the base layer. The thickness of the protection structure is smaller than the thickness of the adhesion structure, so that there is no any watermark or Newton ring formed between the transparent protective layer and the display area of the portable electronic device when pressing the transparent portion.

Abstract: A forming mold made from a polyporous refractory material is provided for forming a glass piece. The forming mold includes an outer surface and a plurality of forming structures provided on the outer surface. Each of the forming structures includes a forming surface matching with a shape of the glass piece. The forming mold is structured and arranged to be pumped down from the outer surface to generated an absorption force on molten glass material provided at the at least one forming surface for sucking the molten glass material on the forming structure to form the glass piece.