Flexible circuit board with tear protection structure

A flexible circuit board comprising:

• a first connection section extending in a first connection direction, a second connection section extending in a second connection direction, and an extension section connecting between the first connection section and the second connection section, the extension section extending in an extension direction, the extension section including a plurality of conductor lines extending in the extension direction, the extension section including at least a slit line formed therein, the slit line having an intermediate portion extending in the extension direction between two terminal end portions;
• wherein at least one of the terminal end portions of the slit line of the flexible circuit board includes a stress-diverting cut segment extending therefrom in a cutting direction, the cutting direction being angularly directed to be transverse with respect to both the extension direction and a corresponding one of the first connection direction and the second connection direction, the stress-diverting cut segment being of substantially same width as the intermediate portion of the slit line to form a tear protection structure for the flexible circuit board to divert stress away from the slit line, the flexible circuit board having an outer edge with a notch formed therein at a location corresponding to the slit line and spaced therefrom, the extension section of the flexible circuit board being foldable about the slit line and the notch for folding the flexible circuit board.