Patent ID: 9247635
Filing Date: 2016-01-26
CPC Classification: H05K

Claim Text:
1. A flexible substrate includes: a base layer having a first surface and a second surface opposite to the first surface; a metallic layer formed on the first surface of the base layer, the metallic layer comprises a plurality of traces and at least one bottom block for defining marked position; a solder mask layer, wherein the solder mask layer is a material that is pervious to light and comprises an exposing surface, the traces and the at least one bottom block are covered with the solder mask layer, wherein a pre-marked area is defined on the exposing surface of the solder mask layer and by an outlined edge of the at least one bottom block, the pre-marked area is located above the perpendicular direction of the at least one bottom block of the metallic layer, and the range of the pre-marked area is defined by projection of the outlined edge of the at least one bottom block; and an identifying code formed within the pre-marked area of the solder mask layer, wherein the at least one bottom block comprises a first longitudinal edge, a lateral edge and an initial identifying portion, wherein a first extension line of the first longitudinal edge intersects with a second extension line of the lateral edge, and the initial identifying portion is located at the intersection position of the first extension line and the second extension line.