GB/T 37382-2019 in English
VALIDOptical functional films—Films for backlight unit of liquid crystal display—High temperature and high humidity aging measurement
- Issued on:2019-03-25
- Implemented on:2020-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$78.00
《GB/T 37382-2019光学功能薄膜 液晶显示背光模组用薄膜 高温高湿老化性能测定方法》由TC431（全国光学功能薄膜材料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 37382—2019
Background and Significance of Standard Formulation
With the rapid development of liquid crystal display technology, optical functional films are increasingly used in backlight modules. However, under high temperature and high humidity conditions, these film materials may degrade in performance, which directly affects the quality and life of display devices. Therefore, it is particularly important to formulate a unified high temperature and high humidity aging performance measurement method.
Comparative analysis of standard frameworks
| Standard dimensions | GB/T 37382—2019 | Reference standards | Comparative analysis |
|---|---|---|---|
| Scope of application | Optical functional films, films for liquid crystal display backlight modules | GB/T 2410 (transmittance/haze) GB/T 6739 (hardness test) | The scope of application is more specific and more targeted |
| Environmental conditions | High temperature and high humidity (≥65°C, ≥95% RH), 500 consecutive hours | - | New high temperature and high humidity aging test requirements |
| Performance indicators | Adhesion, hardness, transmittance, haze, warpage, reflectivity | - | Fully cover the key performance of optical films |
Explanation of professional terms and practical application cases
Adhesion: refers to the bonding strength between the film and the substrate. It is measured by the cross-cut test specified in GB/T 9286.
Transmittance/Haze: measures the light transmission ability and diffusion characteristics of the film. It is tested by GB/T 2410 standard.
Actual application cases:For example, when using optical functional films in the backlight module of the car dashboard, it is necessary to ensure its performance stability in a high temperature and high humidity environment to avoid display distortion or failure due to aging.
Implementation suggestions
- Equipment selection:Select a constant temperature and humidity aging chamber that meets the temperature accuracy of ±0.5°C and humidity accuracy of ±2.5%.
- Specimen preparation:Ensure that the specimen size is ≥210mm×297mm, and cut it into different groups according to standard requirements.
- Test process optimization:It is recommended to conduct an initial performance test before the aging test as a baseline data comparison.
- Data analysis:Evaluate the durability of the material by statistically analyzing the changing trends of performance parameters before and after aging.
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