The generation of noise due the excitation of electronic circuits on a printed circuit board disposed in close proximity to the rear face of an EL as {HEAD ~ a result} of {TAIL ~ a high voltage alternating current} is prevented by the formation of a shield layer on the rear face of the EL 
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The generation of noise due the excitation of electronic circuits on a printed circuit board disposed in close proximity to the rear face of an EL as { HEAD ~ a result } of { TAIL ~ a high voltage alternating current } is prevented by the formation of a shield layer on the rear face of the EL
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