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GB/T 38001.52-2024: Flexible display devices - Part 5-2: Measuring methods of optical characteristics for non portable curved displays
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Flexible display devices - Part 5-2: Measuring methods of optical characteristics for non portable curved displays
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GB/T 38001.52-2024
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Basic data | Standard ID | GB/T 38001.52-2024 (GB/T38001.52-2024) | | Description (Translated English) | Flexible display devices - Part 5-2: Measuring methods of optical characteristics for non portable curved displays | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L53 | | Classification of International Standard | 31.120 | | Word Count Estimation | 22,224 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-08-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38001.52-2024: Flexible display devices - Part 5-2: Measuring methods of optical characteristics for non portable curved displays
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ICS 31:120
CCSL53
National Standards of People's Republic of China
Flexible display devices Part 5-2:
Optical performance test method for non-portable curved display devices
Released on 2024-04-25
2024-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and definitions, abbreviations 1
3:1 Terms and Definitions 1
3:2 Abbreviations 2
4 Standard measuring equipment 2
4:1 Video signal generator 2
4:2 Non-contact optical measuring instrument 2
5 Standard test conditions 3
5:1 Environmental conditions 3
5:2 Driving power supply 3
5:3 Warm-up time 3
5:4 Darkroom Conditions 3
5:5 Adjustment of display devices 3
6 Testing Geometry Layout 3
6:1 Horizontal Test Layout 3
6:2 Vertical Test Layout 4
6:3 Test layout of rotating LMD 5
6:4 Test Layout for Rotating DUT 5
7 Optical performance test methods 6
7:1 General Principles 6
7:2 Test Direction 8
7:3 Viewing Angle Optics of White Window Signals 9
7:4 Uniformity and uniformity variation 10
7:5 Half brightness viewing angle 11
7:6 Half contrast viewing angle 11
Appendix A (Informative) Test Calculation Examples 13
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 5-2 of GB/T 38001 Flexible Display Devices: GB/T 38001 has published the following parts:
--- Part 1-1: Terminology and text symbols;
--- Part 5-1: Test methods for optical properties;
--- Part 5-2: Test methods for optical performance of non-portable curved display devices;
--- Part 5-3: Visual evaluation method;
--- Part 6-1: Mechanical stress test methods;
--- Part 6-2: Environmental test methods:
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 by the Ministry of Industry and Information Technology of the People's Republic of China:
This document is under the jurisdiction of the National Technical Committee for Standardization of Electronic Display Devices (SAC/TC547):
This document was drafted by: TCL Huaxing Optoelectronics Technology Co:, Ltd:, Hefei Visionox Technology Co:, Ltd:, China Electronics Technology Standardization Research Institute
Research Institute, BOE Technology Group Co:, Ltd:, Xiamen Metrology Verification and Testing Institute, and Chengdu Turing Times Technology Co:, Ltd:
The main drafters of this document are: Huang Weidong, Tang Xin, Zhang Yuqin, Wang Feixia, Wang Yu, Ruan Yujiao, and Zhang Sijian:
Introduction
The new display industry is a strategic, basic and leading industry for national economic and social development: Flexible display devices are new display
Flexible display is one of the important development directions of the industry: Due to its bendability, lightness and thinness, its market share is increasing:
The production, manufacturing, inspection and import and export trade needs of device products are to formulate a series of standards for flexible display devices: The Flexible Display Devices are proposed to be
Several parts:
--- Part 1-1: Terms and text symbols: The purpose is to define the terms, definitions and text symbols preferred for flexible display devices:
--- Part 1-2: General specification: The purpose is to specify the classification, technical requirements, inspection methods, inspection rules, and
Marking, packaging, transportation and storage requirements:
--- Part 2: Ratings and characteristics: The purpose is to specify the basic ratings and characteristics requirements of flexible display devices:
--- Part 3-1: Detailed specification for side-bent flexible display modules: The purpose is to specify the terms and definitions of side-bent flexible display modules,
Classification, technical requirements, inspection methods, inspection rules, as well as marking, packaging, transportation and storage requirements:
--- Part 3-2: Detailed specification for external folding flexible display module: The purpose is to specify the terminology and
Definition, classification, technical requirements, inspection methods, inspection rules, as well as marking, packaging, transportation and storage requirements:
--- Part 3-3: Detailed specification for inner folding flexible display module: The purpose is to specify the terminology and
Definition, classification, technical requirements, inspection methods, inspection rules, as well as marking, packaging, transportation and storage requirements:
--- Part 3-4: Detailed specification for rolled flexible display module: The purpose is to specify the terms and definitions, technical
Requirements, inspection methods, inspection rules, as well as marking, packaging, transportation and storage requirements:
--- Part 4-1: Detailed specification for wearable flexible display modules: The purpose is to define the terminology and
Definitions, requirements, inspection rules, inspection methods, and packaging, transportation and storage requirements:
--- Part 5-1: Optical performance test method: The purpose is to specify the optical properties of flexible display devices under dark room and ambient light conditions:
Standard test conditions and test methods for performance:
--- Part 5-2: Test method for optical performance of non-portable curved display devices: The purpose is to specify non-portable curved display devices
Standard test conditions and test methods for optical properties under darkroom conditions:
--- Part 5-3: Visual evaluation method: The purpose is to specify the overall framework and operating procedures for the visual evaluation of flexible display devices:
--- Part 5-10: Stretchable optical performance test specification: The purpose is to specify the stretchable flexible display device under darkroom conditions:
Standard test conditions and test methods for optical properties:
--- Part 6-1: Mechanical stress test method: The purpose is to specify the mechanical stress test method for evaluating flexible display modules:
--- Part 6-2: Environmental test methods: The purpose is to specify the performance of flexible display devices under specified conditions of use, storage and transportation:
Test methods for environmental adaptability:
--- Part 6-3: Mechanical test methods Impact and hardness test: The purpose is to specify the standard for the mechanical reliability of flexible display devices
Test methods, especially for the mechanical reliability of flexible display devices subjected to external forces, impact and hardness:
Flexible display devices Part 5-2:
Optical performance test method for non-portable curved display devices
1 Scope
This document describes the standard test conditions and test methods for the optical performance of non-portable curved display devices under darkroom conditions:
This document applies to concave non-portable products with a single bending radius in a single direction, including liquid crystal displays and organic light emitting displays
Evaluation of the optical performance of the device:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 38001:11-2020 Flexible display devices Part 1-1: Terms and text symbols
GB/T 38001:51-2024 Flexible display devices Part 5-1: Optical performance test methods
3 Terms, definitions and abbreviations
3:1 Terms and Definitions
The terms and definitions defined in GB/T 38001:11-2020 and the following apply to this document:
3:1:1
CurvedDisplay
A display device with a single curvature radius along the horizontal or vertical direction of the screen:
3:1:2
The percentage change of the screen white brightness relative to the vertical viewing angle at a certain specified viewing angle at each measurement point:
3:1:3
The percentage change in screen contrast relative to the vertical viewing angle at a specified viewing angle at each measurement point:
3:1:4
The change in screen chromaticity relative to the vertical viewing angle at a specified viewing angle at each measurement point:
3:1:5
A horizontal viewing angle with half the brightness of the vertical viewing angle at the center point:
3:1:6
The horizontal viewing angle has half the contrast of the vertical viewing angle:
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