| http://www.w3.org/ns/prov#value | - The insulating layer is formed by a known means (a plasma CVD method or a sputtering method) in a single layer or stacked layers of a layer containing an inorganic material such as silicon, the oxide of silicon, or the nitride of silicon (also referred to as an inorganic layer) or a layer containing an organic material such as organic resin (also referred to as an organic layer).
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