Patent ID: 6268694
Filing Date: 2001-07-31
Classification: H01J

Abstract:
A back-light emitting device comprising:(a) a light guide plate; and(b) a cold cathode fluorescent lamp positioned adjacent to an end surface of said light guide plate,said cold cathode fluorescent lamp including:(a) a transparent tube including first and second light-emitting areas defined by physically partitioning an inner space of said transparent tube at the center, and extending to longitudinal ends of said transparent tube;(b) a first terminal electrode positioned in said first light-emitting area and at a longitudinal end of said first light-emitting area located closer to an end of said transparent tube;(c) a second terminal electrode positioned in said second light-emitting area and at a longitudinal end of said second light-emitting area located closer to the other end of said transparent tube;(d) a first intermediate electrode positioned in said first light-emitting area and at the other longitudinal end of said first light-emitting area;(e) a second intermediate electrode positioned in said second light-emitting area and at the other longitudinal end of said second light-emitting area;(f) a first lead-in wire connected to said first terminal electrode through said longitudinal end of said first light-emitting area;(g) a second lead-in wire connected to said second terminal electrode through said longitudinal end of said second light-emitting area;(h) a third lead-in wire connected to said first intermediate electrode through said other longitudinal end of said first light-emitting area; and(i) a fourth lead-in wire connected to said second intermediate electrode through said other longitudinal end of said second light-emitting area,a lower level voltage being applied to said first and second terminal electrodes, and a higher level voltage being applied to said first and second intermediate electrodes.