The world’s largest synthetic sapphire crystal has been produced in China.

Category: Company News

Release date: 2018-03-20

Summary: According to a report by Science and Technology Daily, the Hohhot Municipal Party Committee’s Publicity Department in Saihan District announced on the 13th that the world’s largest 450‑kilogram‑class ultra‑large‑size, high‑quality sapphire crystal grown by the Kyocera method has been successfully produced at the production workshop of Inner Mongolia Jinghuan Electronic Materials Co., Ltd. This crystal was independently developed by Jinghuan Electronics’ R&D team and, after nearly eight months of design and development, equipment fabrication, annealing, and crystal growth, achieved successful small‑scale trial production on the 13th. Preliminary testing indicates that the crystal weighs 445 kilograms, exhibits a regular shape, is uniformly transparent, free of cracks and grain boundaries, contains few bubbles, and can be used for LED applications, with an effective length of 4‑inch ingots exceeding 4,550 millimeters. The Kyocera method is…

According to a report by Science and Technology Daily, the Hohhot Municipal Party Committee’s Publicity Department of Saihan District announced on the 13th that the world’s largest 450‑kilogram‑class, ultra‑large‑size, high‑quality sapphire crystal grown by the Czochralski method has been successfully produced at the production workshop of Inner Mongolia Jinghuan Electronic Materials Co., Ltd. The crystal was independently developed by Jinghuan Electronics’ R&D team and, after nearly eight months of design and development, equipment fabrication, annealing, and crystal growth, achieved successful small‑scale trial production on the 13th. Preliminary testing indicates that the crystal weighs 445 kilograms, exhibits a well‑defined shape, is uniformly transparent, free of cracks and grain boundaries, and contains few inclusions; it can be used for LED applications, with an effective length of 4‑inch ingots exceeding 4,550 millimeters.
 
The Czochralski method is currently the mainstream technique for growing synthetic crystals worldwide and remains a key production process that countries around the globe are striving to master. In 2017, a 350‑kilogram synthetic sapphire from Russia was recognized as the largest in the world; however, this record was broken by China just one year later.

Keywords: The world’s largest synthetic sapphire crystal has been produced in China.

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