Discharge lamp provided with external electrodes, production method of the discharge lamp, backlight unit provided with the discharge lamp, and liquid crystal display apparatus

摘要

A discharge lamp includes a glass bulb and a pair of electrodes provided at both ends of the glass bulb. At least one of the electrodes is an external electrode formed on an outer surface of the glass bulb as a thin layer whose maximum thickness is 70 μm or less, and an end portion of the external electrode becomes smaller in thickness towards an end of the external electrode.