GB/T 38001.52-2024Flexible display devices - Part 5-2: Measuring methods of optical characteristics for non portable curved displays (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 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:

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: