A folding chair with safety latch device. A layer of silicone is then applied to the leather surface, the silicone penetrating into the material to a predetermined depth, and the resultant assembly is then operated on in a manner to form raised portions and wells in the top and bottom surface of the assembly. The light guide plate has a supporting portion that protrudes from a side surface of the light guide plate to support the circuit board disposed adjacent to an edge of the display panel.