<p>A pin board is provided, comprising: a base block configured to have a lower portion on which a main flexible circuit board to be electrically connected to a main substrate is mounted; a flexible circuit board unit configured to be formed in a plate shape and have a predetermined elasticity; and a supporting unit configured to be coupled to the lower portion of the base block and support the flexible circuit board unit to be inclined downward at a predetermined angle of inclination such that a protruding upper end of the flexible circuit board unit can contact a contact point of the main flexible circuit board with a predetermined elasticity and a protruding lower end of the flexible circuit board can contact a contact pad of an external panel with a predetermined elasticity. Accordingly, the flexible circuit board unit can be supported as inclined and be easily replaced, and alignment of the flexible circuit board unit at a contact point can be visibly and easily identified.</p>
