The crystal after nearly eight months of design and development, equipment processing, calcination, growth and other processes, developed on February 12, 2018, and before the size of the world's largest bulging method sapphire crystal Russia produced 350 kg Crystal.After preliminary examination, the crystal weight of 445 kilograms, shape regular, whole body transparent, no cracks, no grain boundaries, less bubbles, can be applied to the LED 4-inch crystal ingot effective length of more than 4550mm 450 kilograms of the birth of sapphire, It is yet another example of China's science and technology surpassing the world in the field of new materials by making our large-size sapphire material completely free from import dependency.
Sapphire crystal with excellent mechanical properties, good thermal properties, semiconductor GaN / Al2O3 light-emitting diodes (LEDs), large scale integrated circuits SOI and SOS and superconducting nanostructured thin film and other ideal substrate material, which belongs to the state's key support and encouragement The development of energy materials and optoelectronic materials, yield in the case of considerable sapphire crystal size, the higher the utilization of materials, the smaller the corner loss, especially in the 6-inch substrate, the application of large-size panels The advantage is more obvious.After preliminary calculation, compared with 150 kilograms of sapphire crystal, the 450 kilograms of sapphire crystal development is expected to post-production unit cost can be reduced by about 40%.
