Overview
IEC TR 62715-5-61:2024 is a Technical Report published by the International Electrotechnical Commission (IEC) as part of the IEC 62715 series on flexible displays. This particular part, "Flexible displays – Part 5-61: Overview of measurement and application scenarios of stretchable displays," offers a comprehensive introduction to the latest advances in stretchable display technologies. It details the unique requirements for the development of measurement methods for stretchable displays-distinct from those required for other flexible display types, such as foldable or rollable displays.
Stretchable displays are a cutting-edge classification of flexible displays that allow significant changes in surface area and shape. As "freeform displays," they’re capable of accommodating multi-curvature and even dynamic deformation, opening new opportunities for design and application. This standard provides guidance not only on the fundamental technology but also on the assessment challenges facing manufacturers and developers.
Key Topics
- Stretchable Display Technology: An overview of the technological basis for stretchable displays, including device structure, pixel configurations (such as island-bridge structures), and how rigid and stretchable regions interact during deformation.
- Types of Stretching: Discussion of various stretching classifications:
- One-axis stretching (linear elongation)
- Bi-axis stretching (simultaneous stretching in two axes)
- Multi-curvature stretching (complex surface shape changes)
- Twisting and other freeform deformations
- Application Scenarios: Exploration of how stretchable displays can be used dynamically (with ongoing shape change) or statically (in a fixed deformed state), including potential industries and environments such as wearables, automotive interiors, and consumer electronics.
- Measurement Methodology: Special focus on the challenges of defining and standardizing measurement methods for stretchability, luminance, and color in both two-dimensional and three-dimensional contexts. The report introduces considerations and example measurement techniques, particularly for three-dimensional stretching-an area currently lacking in formal standards.
Applications
The unique capabilities of stretchable displays are driving interest and innovation in multiple industries. Key application areas include:
- Wearable Electronics: Devices that conform to and move with the body, where displays are integrated into clothing or accessories requiring significant flexibility and stretch.
- Automotive Interiors: Integration into center fascias, dashboards, or curved surfaces inside vehicles, where displays must follow complex, non-planar geometries.
- Medical Devices: Flexible displays embedded in diagnostic or therapeutic equipment, conforming comfortably to patient anatomy.
- Consumer Electronics: New form factors for smartphones, tablets, and other personal devices that benefit from robust and adaptable displays.
The standard also highlights the importance of dynamic versus static operating requirements, such as displays that can stretch, twist, and revert repeatedly (dynamic), compared to those installed in a permanently deformed configuration (static).
Related Standards
IEC TR 62715-5-61:2024 is part of a broader set of international standards for flexible and stretchable displays. Relevant related documents include:
- IEC 62715 Series: Covers a range of flexible display technologies (including foldable, rollable, and slidable displays), with further guidelines on performance, durability, and measurement.
- Upcoming Standards: Future parts, such as IEC 62715-6-6x, are anticipated to address detailed measurement procedures and durability criteria specific to stretchable displays.
- IEC TC 110: The technical committee responsible for electronic display standards, continuously developing guidance as display technologies evolve.
- ISO and IEC Terminology Resources: Access to standardized terms via IEC Electropedia and ISO Online Browsing Platform.
Practical Value
Implementing IEC TR 62715-5-61:2024 enables manufacturers, researchers, and product developers to:
- Understand the technological landscape and emerging application areas for stretchable displays
- Anticipate the need for specialized measurement and testing methods in design and quality assurance processes
- Lay the groundwork for compliance with future international standards, ensuring products are competitive in a rapidly developing global marketplace
By leveraging the recommendations and insights in this report, stakeholders can better navigate the challenges of stretchable display technology and unlock innovative market opportunities.