In {TAIL ~ the process} of {HEAD ~ photolithography}, the solder resist in a section where the groove is to be formed is eliminated, that is to say, an opening is made in the insulating layer, concurrently with exposing the electrical connection section from the insulating layer, whereby the groove is formed 
In { TAIL ~ the process } of { HEAD ~ photolithography } , the solder resist in a section where the groove is to be formed is eliminated , that is to say , an opening is made in the insulating layer , concurrently with exposing the electrical connection section from the insulating layer , whereby the groove is formed
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