IEC 61747-40-6:2018 PDF

Name: IEC 61747-40-6:2018 — Liquid crystal display devices - Part 40-6: Mechanical testing of display cover glass for mobile devices - Retained biaxial flexural strength (abraded ring-on-ring)
SKU: IEC 61747-40-6:2018
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Liquid crystal display devices - Part 40-6: Mechanical testing of display cover glass for mobile devices - Retained biaxial flexural strength (abraded ring-on-ring)

Название (английский):

IEC 61747-40-6:2018

Liquid crystal display devices - Part 40-6: Mechanical testing of display cover glass for mobile devices - Retained biaxial flexural strength (abraded ring-on-ring)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 8 февраля 2018 г.
Издание:: IEC IS 61747 edition 1 version 1
ICS:: 31.120

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Описание (английский):

IEC 61747-40-6:2018(E) is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This document focuses on the measurement of surface fracture load after flaw introduction via grit particle abrasion. After abrasion, the retained surface fracture load is measured with the method documented in IEC 61747-40-4.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

IEC 61747-40-6:2018 - "Liquid crystal display devices - Part 40-6: Mechanical testing of display cover glass for mobile devices - Retained biaxial flexural strength (abraded ring-on-ring)" specifies a mechanical performance test for display cover glass used in mobile devices. The standard defines a controlled grit particle abrasion procedure to introduce surface flaws, followed by measurement of the retained surface fracture load using the ring-on-ring (biaxial flexural) test method referenced from IEC 61747-40-4. The goal is to quantify how abrasion damage reduces fracture load and to provide repeatable comparative data for glass materials and treatments.

Key topics and requirements

Two-step test sequence: (1) controlled particle abrasion of specimens; (2) retained failure load testing with the ring-on-ring method (IEC 61747-40-4).

Specimen guidance: typical specimen size example is 50 × 50 mm, thickness 0.55 mm to 2.0 mm; sample size example is 30 specimens.

Abrasion apparatus and materials: description of an abrasion device, specimen holder and grit particle media; clause-level details govern device geometry and particle containment.

Abrasion conditions: typical abrasion pressures stated in the standard range from about 34.5 kPa to 310.3 kPa (more commonly 34.5–103.4 kPa), with rare use above 413.7 kPa; exact pressure selection depends on glass type and target damage.

Iterative calibration: an iterative approach (e.g., 10-specimen trial) may be used to select an abrasion pressure that produces field-relevant check depths; Annex A describes check-depth measurement by fractography.

Retained fracture measurement: specimens are tested in biaxial flexure (ring-on-ring). Load-at-fracture values are reported without normalization to classical formulas due to possible non-linearities.

Statistics and reporting: Weibull statistics of post-abrasion fracture loads are used to report sample performance.

Safety and handling: precautions for broken glass and airborne particulates; specimen preservation (adhesive tape over fracture surface and PTFE film on support ring) to protect surfaces and reduce fragment scattering.

Environmental conditioning and calibration: pre-conditioning times and calibration traceability requirements referenced to IEC 61747-40-1.

Applications and users

Quality assurance and acceptance testing for mobile device cover glass

Material selection and comparative evaluation of glass compositions and surface treatments (e.g., ion-exchanged glass)

R&D and failure analysis to correlate abrasion damage to retained strength

Test laboratories and manufacturers of displays, touch covers, and glass suppliers seeking reproducible metrics for abrasion resistance and retained biaxial flexural strength

Related standards

IEC 61747-40-1 - Guidelines for mechanical testing of display cover glass

IEC 61747-40-4 - Biaxial flexural strength (ring-on-ring) - method used to measure retained fracture load

Keywords: IEC 61747-40-6, retained biaxial flexural strength, abraded ring-on-ring, cover glass abrasion testing, grit particle abrasion, ring-on-ring test, retained surface fracture load, mobile device display glass.

IEC 61747-40-6:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

BS IEC 61747-40-4:2015

Liquid crystal display devices - Mechanical testing of display cover glass for mobile devices. Biaxial flexur…

BS IEC 61747-40-1:2019

Liquid crystal display devices - Mechanical testing of display cover glass for mobile devices. Guidelines

BS IEC 61747-40-6:2018

Liquid crystal display devices - Mechanical testing of display cover glass for mobile devices. Retained biaxi…