A mounting apparatus includes a support member, a pair of lock members and a plurality of fasteners. The display device includes a light guide plate, a light source disposed on a side surface of the light guide plate, a light conversion member disposed between the light source and the light guide plate, and a first adhesion member closely attached to the light guide plate and the light conversion member. At least one portion of the gate electrodes are at source potential. The detachable jaw has a dovetail protrusion along one side surface thereof. In addition, non-zero elements, which are newly produced by the Gaussian elimination of the first pivot, are added to the coefficient matrix.