DISCHARGE LAMP AND BACKLIGHT UNIT FOR BACKLIGHTING A DISPLAY DEVICE COMPRISING SUCH A DISCHARGE LAMP

摘要

The invention relates to a discharge lamp, comprising a light-transmissive discharge vessel (2) filled with an ionisable substance (3), and at least two electrodes (4) connected to said vessel, between which electrodes a discharge extends during lamp operation, wherein at least one electrode is adapted for capacitive coupling of HF electrical energy to said ionisable substance, and is characterised in that said discharge vessel part which comprises said capacitive electrode is shaped such that it has an increased surface area with respect to the remaining part of the discharge vessel. The invention also relates to a backlight module for backlighting a display device comprising at least one discharge lamp according to the invention. The invention further relates to a display device provided with at least one backlight module according to the invention.