IEC 62341-1-2:2014

Overview

The IEC 62341-1-2:2014 standard, titled Organic Light Emitting Diode (OLED) Displays - Part 1-2: Terminology and Letter Symbols, is an internationally recognized document developed by the International Electrotechnical Commission (IEC). This standard establishes preferred terms, definitions, and symbol conventions specific to OLED displays, promoting consistency and uniformity across publications and technical documentation worldwide.

Aimed at stakeholders involved in the design, production, and research of OLED display technologies, IEC 62341-1-2:2014 helps unify the language and technical communication related to OLED devices. By offering standardized terminology, the document supports clearer understanding and facilitates international collaboration within the electronics and display industries.

The 2014 edition introduces significant updates from the previous version, including additional terms, revised definitions, removal of obsolete terms, and the addition of an informative annex explaining OLED structure. It also aligns editorially with current ISO/IEC directives, ensuring compliance with modern standardization practices.

Key Topics

Terminology Classification

The standard organizes OLED-related terms into five main categories:

• Fundamental terms: Core definitions such as active matrix driving, addressing methods, and OLED types (e.g., inverted OLED, hybrid OLED).
• Physical properties: Terms describing optical and electrical properties critical to OLED function.
• Constructive elements: Definitions related to device architecture, such as bottom emission or dual emission displays.
• Performance and specifications: Terms describing display characteristics including color gamut, pixel pitch, and driving methods.
• Production processes: Vocabulary related to manufacturing techniques including doping methods and multiplex driving.

Letter Symbols

IEC 62341-1-2:2014 prescribes letter symbols for physical quantities and units commonly used in OLED display technologies. This harmonization aids engineers and researchers in maintaining clear, consistent notation in technical documents and specifications.

Terminology Highlights

• Active Matrix Driving: Technology where each pixel includes an active switching element such as a transistor, enabling precise control.
• Full-Colour Display: OLED displays capable of producing wide color gamuts with at least three primary colors and high gray scale levels.
• Flexible Display: Displays with mechanical flexibility, highlighting emerging trends in wearable and foldable devices.
• Organic Electroluminescence (OEL): Light emission mechanism fundamental to OLED technology.
• Inverted OLED: Structure where the cathode is placed on the substrate side, influencing fabrication and performance.

Annexes

• Annex A: Supplements terms on key parameters like pixel pitch and viewing direction with clear illustrations.
• Annex B: Provides an informative overview of OLED device structure to aid comprehension of physical and constructive terminology.

Applications

The IEC 62341-1-2:2014 standard is essential for various practical applications in both industry and academia:

• Technical Documentation: Enables consistent and precise terminology in datasheets, manuals, and academic papers related to OLED displays.
• Product Development: Assists engineers in design and specification phases by clarifying definitions of driving methods, device types, and performance metrics.
• Standard Compliance: Facilitates conformity with international standards in manufacturing and quality assurance processes.
• Cross-Border Collaboration: Promotes a universal language for researchers and companies operating worldwide, accelerating innovation and technology adoption.
• Education and Training: Provides a foundational vocabulary for training professionals in display technology and electronic engineering.

Related Standards

IEC 62341-1-2:2014 is part of the broader IEC 62341 series, which covers comprehensive aspects of OLED display technology including performance measurement and test methods. Other related international standards and resources include:

• IEC 62341-1: Broad overview standards for OLED displays.
• ISO/IEC Directives: Editorial and procedural frameworks ensuring the consistency of IEC publication content.
• Technical specifications on electroluminescent devices: Standards focusing on measurement techniques and quality assessment for OLED components.
• Electropedia and IEC Glossary: Online resources offering extensive databases of electrotechnical terms, including OLED-specific definitions aligned with IEC 62341-1-2.

By adhering to IEC 62341-1-2:2014, stakeholders in the OLED display ecosystem gain access to a unified, authoritative vocabulary that enhances communication, reduces misunderstandings, and supports the advancement of organic light emitting diode technology worldwide.