公开(公告)号：US20240300855A1

公开(公告)日：2024-09-12

申请号：US18263385

申请日：2022-01-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shifeng Chen ,  Yihong Huang ,  Wenbin Xu ,  Zhou Zeng ,  Geng Lin ,  Jiejie Chen ,  Guangxiang Zhu

IPC: C03C21/00 ,  C03C10/00 ,  H04N23/51 ,  H05K5/03

CPC classification number: C03C21/002 ,  C03C10/0009 ,  C03C10/0027 ,  C03C10/0054 ,  H04N23/51 ,  H05K5/03 ,  C03C2204/00

Abstract: A chemically strengthened glass ceramic includes strengthening layers respectively formed on opposite sides, and each of the strengthening layers includes a potassium strengthening layer and a sodium strengthening layer sequentially located from a surface to an inside of the chemically strengthened glass ceramic. A depth of the potassium strengthening layer is 0.01 micrometers (μm) to 5 μm. A depth of the sodium strengthening layer is greater than or equal to 0.1t, where t is a thickness of the chemically strengthened glass ceramic. An average transmittance of a three-dimensional (3D) chemically strengthened glass ceramic in an optical wavelength range of 400 nanometers (nm) to 700 nm is greater than or equal to 85 percent %; a b value of a Lab color chromaticity indicator is greater than or equal to −2.0; and a haze is less than or equal to 0.25%.