Liquid crystal display device having a flexible circuit board

A flexible circuit board, comprising:

• a flexible base film having a device engaging portion;
• a driving IC formed at a central portion of said flexible base film, for applying driving signals to driving devices;
• first conductive layer patterns extended on said flexible base film from said driving IC to the device engaging portion, the first conductive layer patterns extending over at least part of the device engaging portion of the flexible base film;
• a solder resin layer partially exposing said first conductive layer patterns formed on the device engaging portion and covering said first conductive layer patterns near said driving IC;
• and
• a reinforcing means for preventing first conductive layer patterns from disconnecting due to bending fatigue at a border of the device engaging portion and said solder resin layer.

A liquid crystal display device including a display unit having a liquid crystal display panel, a flexible circuit board attached to the liquid crystal display panel for applying driving signals to the liquid crystal display panel, a back light assembly providing light to the display unit, and a mold frame for receiving the liquid crystal display panel and the back light assembly, the flexible circuit board comprising:

• a flexible base film having a liquid crystal panel engaging portion, an outside end of the flexible base film defining an outside end of the liquid crystal panel engaging portion;
• a driving IC formed at a central portion of said flexible base film, for applying at least one driving signal to at least one driving device of the liquid crystal panel;
• first conductive layer patterns extending on the flexible base film from the driving IC to at least one end of the flexible base film;
• a solder resin layer covering a part of the first conductive layer patterns and a first end of the solder resin layer defining an inside end of the liquid crystal engaging portion of the flexible base film layer;
• and
• a reinforcing member covering, at least, the first end of the solder resin layer and the inside end of the liquid crystal engaging portion of the flexible base film layer.