STRUCTURE THREE-DIMENSIONAL CODE AND ANTI-COUNTERFEITING METHOD
FIG7 is a schematic diagram of an anti-counterfeiting feature layer including multiple composite layers
In a case of identifying through the composite layers, it is assumed that the anti-counterfeiting feature layer includes three composite layers, as shown in FIG7 which may be regarded as a sectional view; the anti-counterfeiting feature layer is sequentially a first composite layer 701, a second composite layer 702 and a third composite layer 703 from top to bottom. It is assumed that surfaces of some parts of the coding pattern 71 belong to an upper surface of the second composite layer 702 (e.g., a depth of these parts is equal to a thickness of the first composite layer 701), and surfaces of other parts belong to an upper surface of the third composite layer 703 (i.e., a depth of these parts is equal to the thickness of the first composite layer 701 plus a thickness of the second composite layer 702); then a background region 72 presents a color of an upper surface of the first composite layer 701. In a practical application, the surface of the coding pattern may not be limited to, belonging to an upper surface of a certain composite layer. If the whole composite layers have colors, the surface of the coding pattern presents a color of one composite layer as long as the surface of the coding pattern belongs to the composite layer. For example, in FIG7, if the depth at which the coding pattern is concave is greater than the thickness of the first composite layer 701 and less than a depth equal to the thickness of the first composite layer 701, then the surface of the coding pattern presents a color inside the second composite layer 702.
schematic diagram
72
background region
701
first composite layer
702
second composite layer
703
third composite layer
71
coding pattern
['2. The structural three-dimensional code of claim 1, wherein: the coding pattern comprises one or more of the following: a bar code and a two-dimensional code.']