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