The outer peripheral portion refers to portions of the substrate 112 and the cover layer 122 which portions are outside of the outer peripheral edge of the barrier layer 118, and the inner peripheral portion refers to {HEAD ~ portions} of the substrate 112 and {TAIL ~ the cover layer} 122 which portions are inside of the inner peripheral edge of the barrier layer 118 
The outer peripheral portion refers to portions of the substrate 112 and the cover layer 122 which portions are outside of the outer peripheral edge of the barrier layer 118 , and the inner peripheral portion refers to { HEAD ~ portions } of the substrate 112 and { TAIL ~ the cover layer } 122 which portions are inside of the inner peripheral edge of the barrier layer 118
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