Disclosed is a substrate for a display device that includes a composite material layer including an inorganic fiber material and a resin, and a metal layer disposed on the composite material layer, and a display device including the substrate. In one example implementation, the internal positive feedback loop in the thyristor is used to restore the conducting state of a device after the thyristor current drops below the holding current. Also disclosed are methods for promoting proliferation or differentiation of osteoblasts, osteoclasts, chondrocytes, or bone marrow stem cells comprising culturing the cells in an effective amount of a zvegf3 protein. If desired, a substantially planar reinforcing structure can be placed between layers of bricks, resulting in a horizontally reinforced wall structure. A first curved wall extends up from the first side edge of the platform and curves substantially around the platform, and a second curved wall extends up from the second side edge of the platform and curves substantially around the platform.