GB/T 45505.3-2025Test method of flat panel display glass substrate — Part 3: Thermal properties (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is Part 3 of GB/T 45505 “Test methods for glass substrates for flat panel displays”. Lower part.

— Part 1: Appearance and geometry;

— Part 2: Surface properties;

— Part 3: Thermal properties;

— Part 4: Mechanical properties;

— Part 5: Optoelectronic properties.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed and coordinated by the National Technical Committee for Semiconductor Equipment and Materials Standardization (SAC/TC203).

This document was drafted by: Wuhu Dongxu Optoelectronics Technology Co., Ltd., China Electronics Technology Standardization Institute, Zhengzhou Xufei Optoelectronics Technology Co., Ltd.

Co., Ltd., Rainbow Group Co., Ltd., Bengbu Zhongguang Technology Co., Ltd., Hebei Guangxing Semiconductor Technology Co., Ltd., Rainbow Display Devices Co., Ltd.

Co., Ltd., China National Building Material Glass New Materials Research Institute Group Co., Ltd., Shijiazhuang Xuxin Optoelectronics Technology Co., Ltd., Dongxu Group Co., Ltd.

Company, Gansu Xusheng Display Technology Co., Ltd., Rainbow Group (Shaoyang) Special Glass Co., Ltd., Qingdao Fusion Optoelectronics Technology Co., Ltd., Zhejiang Xingke Optoelectronics Technology Co., Ltd., Zhejiang Chuangrou Display Technology Co., Ltd., Hunan Shaohong Special Glass Co., Ltd., Xinjiang Tengyu Optoelectronics Technology Co., Ltd.

The main drafters of this document are: Li Qing, Hu Hengguang, Jin Liangmao, Chen Xiaoning, Zhao Junsha, Wu Yiran, Shi Zhiqiang, Zhang Yujiao, Zhao Yule, Cao Kewei, Yang Guohong, Wu Xiaoxi, Cao Zhiqiang, Zhu Mingliu, Zheng Quan, Kong Xiumei, Li Miao, Shu Zhongzhong, Li Heran, Su Jihua, Wang Shilan, Li Ruijiao, Yan Dongcheng, Gao Weiming, Li Zhijun, Zhang Guangtao, Shen Yuguo, Wei Zeguang, Xu Lihua, Yang Rong, Shi Zeyuan, Zhang Baoshuai, Cao Xin, Cui Jiedong, Liu Yuanqi, Luo Kang, Zhang Pan, Liu Wenyuan, Gao Yu, Xue Xinjian, Liu Dan, Zhang Wenliang, Lu Shiguang, Huang Xinghua, Li Jingbo, Liu Zhengmao, Shi Lifen, Du Xiuhong, Yang Yi, Liu Jun, Jiang Zhiwen, Wang Pingping, and Gao Qiang.

Introduction

Flat panel display substrate glass is a key strategic material in the electronic information display industry. The quality of substrate glass is closely related to the resolution and transparency of the finished panel.

Brightness, thickness, weight, viewing angle and other indicators are closely related, representing the highest level in the field of modern glass large-scale manufacturing in the world.

As substrate glass continues to become higher definition, larger size, and ultra-thin, the quality requirements for display substrate glass are increasing year by year.

Appearance, length and width dimensions and deviations, thickness deviation, thickness difference, edge shape, cutting angle deviation, positioning angle deviation, right angle, deflection, warping, Surface roughness, waviness, annealing point, strain point, softening point, average linear thermal expansion coefficient, thermal conductivity, reheat linear shrinkage, density, stress, Young's modulus, shear modulus, Poisson's ratio, Vickers hardness, transmittance, refractive index, volume resistivity, dielectric constant and dielectric loss factor are for flat plates.

These indicators will affect the product quality of flat panel display substrate glass, so it is necessary to establish the Test methods for display substrate glass.

GB/T 45505 aims to provide test methods for various properties of flat panel display substrate glass and is intended to consist of five parts.

— Part 1: Appearance and geometric dimensions. The purpose is to provide test methods for the appearance and geometric dimensions of flat panel display substrate glass.

— Part 2: Surface properties. The purpose is to provide a test method for the surface properties of flat panel display substrate glass.

— Part 3: Thermal properties. The purpose is to provide a test method for the thermal properties of flat panel display substrate glass.

— Part 4: Mechanical properties. The purpose is to provide test methods for the mechanical properties of flat panel display substrate glass.

— Part 5: Photoelectric properties. The purpose is to provide test methods for the photoelectric properties of flat panel display substrate glass.

Test methods for flat panel display substrate glass Part 3: Thermal properties

1 Scope

This document describes the annealing point, strain point, softening point, average linear thermal expansion coefficient, thermal conductivity and reheat Method for measuring linear shrinkage.

This document is applicable to the testing of thermal properties of substrate glass for all types of flat panel displays.

2 Normative references

GB/T 1216

GB/T 16920-2015

GB/T 21389

GB/T 38711-2020

GB/T 38712-2020

3 Terms and Definitions

The terms and definitions defined in GB/T 16920-2015, GB/T 38712-2020, GB/T 38711-2020 and the following terms and definitions apply to This document.