BACKLIGHT FOR LIQUID CRYSTAL DISPLAY COMPRISING LIGHT EMITTING DIODE

摘要

A backlight of an LCD(Liquid Crystal Display) using a light emitting diode is provided to form the lines for electrically connecting LEDs(Light Emitting Diodes) with a driving circuit connecting connector on the surface opposite to the arrangement surface of LEDs. A double-sided PCB(Printed Circuit Board) has plural division areas and conduction via holes. Plural light emitting diodes are arranged at the upper surface of the double-sided PCB. Plural driving circuit connection connectors(25) are arranged at a side of the double-sided PCB. Plural first lead patterns(26) are formed on the upper surface of the double-sided PCB and electrically connect plural light emitting diodes located at the division areas. Plural second lead patterns are formed on the lower surface of the double-sided PCB and electrically connect the first lead patterns and the connectors through the conduction via holes. The double-sided PCB also includes heat radiating via holes penetrated from the upper surface to the lower surface having LEDs arranged thereon. The first lead patterns adjacent to the connectors are directly connected with the connectors.