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Chongqing-Made Kunlun Glass 10 Times Stronger to Protect Huawei Phone

By RAN ZHENGICHONGQING|Sep 24,2022

Chongqing- Have you ever broken a phone screen? At least some people will give an affirmative answer. Yu Chengdong, Executive Director of Huawei, recently introduced Kunlun Glass used in the Mate50 Pro Kunlun version to fix this pain at the Huawei Mate50 launch conference.

Kunlun glass has the first-ever five-star glass drop resistance certification from Switzerland’s SGS, and the drop resistance of Kunlun Glass is ten times higher than ordinary glass, said Jiang Hong, chief scientist of Chongqing Xinjing Special Glass Co., Ltd., and director of the National Key Laboratory of Special Glass.

Kunlun Glass filled with 10,000 trillion crystals keeps mobile phones from a smashed screen

Kunlun Glass, filled with 10,000 trillion crystals, keeps mobile phones from smashed screens. (Photo provided to iChongqing)

It is said to be better than Corning glass

Kunlun Glass was developed and manufactured by Chongqing Xinjing Special Glass Co., Ltd., which settled in Liangjiang New Area in 2014 and mainly produced high-alumina and high-lithium silica special glass.

Chongqing Xinjing Special Glass Co., Ltd.

Chongqing Xinjing Special Glass Co., Ltd. (Photo provided to iChongqing)

“As a high-end material, high-alumina silica glass is widely used in touch panels, aviation, high-speed rail and rail trains, with great market demand,” said Bai Yibo, chairman of Chongqing Xinjing Special Glass Co., Ltd. “In 2020, Xinjing added a production line to produce transparent nano-ceramic glass.”

Two days after the Huawei launching conference, Apple debuted the iPhone 14 series on September 8. The series continues to use Apple’s exclusive super-ceramic glass panels produced by Corning Inc. in the United States.

“Kunlun glass is also a super ceramic crystal, a transparent nano-ceramic glass,” said Jiang. He continued that since Apple has invested in Corning, Corning’s glass is exclusively for Apple and not sold to Huawei and other Chinese mobile phone manufacturers.

“But now, we are fully capable of producing our own Kunlun Glass, and some of its properties are even better than Corning’s super-ceramic,” said Jiang.

10,000 trillion crystals prevent crack propagation

Experiments show that the Huawei Mate50 Pro equipped with Kunlun Glass can be dropped from 4.2 meters without damage because it contains 10,000 trillion nanocrystals to prevent cracks.

“Ceramic glass is ubiquitous, but it is difficult to make it transparent. The reason for its high resistance is that there are 10-20 nanometer crystallites in the glass, which is like mixing stones in cement,” said Jiang.

Production line in Chongqing Xinjing Special Glass Co., Ltd.

The production line in Chongqing Xinjing Special Glass Co., Ltd. (Photo provided to iChongqing)

Jiang continued that the majority of glass-ceramic screens are nano-crystallites. Kunlun Glass has undergone high-temperature platinum precious metal smelting at 1600 degrees, nanocrystal growth for 24 hours, and 108 processing procedures. Each piece of Kunlun Glass has 10,000 trillion high-strength nanocrystals injecting composite particles.

“When glass crack expands, it encounters the crystal grain, and the crack will bypass,” said Jiang. “It must bypass many crystals and a long path to break the glass ceramic which resists the crack propagation.”

Chongqing Xinjing Special Glass Co., Ltd. has over 200 patents covering formulations, production equipment and processes, glass properties, and testing.

(Zhu Qinzhuo, as an intern, also contributed to this report.)

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