IEC 61747-1-1:2014

Liquid crystal display devices - Part 1-1: Generic - Generic specification

IEC 61747-1-1:2014 is a generic specification for liquid crystal display devices. It defines general procedures for testing and gives general rules for the measuring methods of the electrical and optical characteristics, the rules for climatic and mechanical tests, and the rules for endurance tests. This first edition cancels and replaces the first edition of IEC 61747-1 published in 1998 and Amendment 1:2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) IEC 61747-1, has been divided into IEC 61747-1-1, Liquid crystal display devices - Part 1-1: Generic - Generic specification and IEC 61747-1-2, Liquid crystal display devices - Part 1-2: Generic - Terminology and letter symbols;
b) the contents of the terminology have been transferred to IEC 61747-1-2;
c) Annex C has been changed from normative to informative, because Tables C.1 and C.2 mismatch some of the large scale production practices of recent date;
d) References cited have been updated.

General Information

• Status: Published
• Publication Date: 11-Aug-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.120 - Electronic display devices
• Technical Committee: TC 110 - Electronic displays
• Drafting Committee: WG 2 - TC 110/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 15-Nov-2014
• Completion Date: 12-Aug-2014

Relations

• Replaces: IEC 61747-1:1998 - Liquid crystal and solid-state display devices - Part 1: Generic specification
• Effective Date: 05-Sep-2023
• Replaces: IEC 61747-1:1998/AMD1:2003 - Amendment 1 - Liquid crystal and solid-state display devices - Part 1: Generic specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61747-1-1 ®
Edition 1.0 2014-08
INTERNATIONAL
STANDARD
Liquid crystal display devices –
Part 1–1: Generic – Generic specification
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IEC 61747-1-1 ®
Edition 1.0 2014-08
INTERNATIONAL
STANDARD
Liquid crystal display devices –

Part 1–1: Generic – Generic specification

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 31.120 ISBN 978-2-8322-1805-1

– 2 – IEC 61747-1-1:2014 © IEC 2014
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Technical aspects . 7
4.1 Order of precedence . 7
4.2 Standard environmental conditions . 7
4.3 Marking . 7
4.3.1 Device identification . 7
4.3.2 Device traceability . 7
4.3.3 Packing . 7
4.4 Categories of assessed quality . 8
4.5 Screening . 8
4.6 Handling . 8
5 Quality assessment procedures . 8
5.1 General . 8
5.2 Commercially confidential information . 9
5.3 Formation of inspection lots . 9
5.4 Structurally similar devices . 9
5.5 Granting of qualification approval . 9
5.6 Quality conformance inspection . 10
5.6.1 General . 10
5.6.2 Division into groups and subgroups . 10
5.6.3 Inspection requirements . 11
5.6.4 Supplementary procedure for reduced inspection . 13
5.6.5 Sampling requirements for small lots . 13
5.6.6 Certified records of released lots (CRRL) . 13
5.6.7 Delivery of devices subjected to destructive or non-destructive tests . 14
5.6.8 Delayed deliveries . 14
5.6.9 Supplementary procedure for deliveries . 14
5.7 Statistical sampling procedures . 14
5.7.1 General . 14
5.7.2 AQL sampling plans . 14
5.7.3 LTPD sampling plans . 14
5.8 Endurance tests . 14
5.9 Endurance tests where the failure rate is specified . 14
5.9.1 Overview . 14
5.9.2 General . 14
5.9.3 Selection of samples . 15
5.9.4 Failure . 15
5.9.5 Endurance test time and sample size . 15
5.9.6 Procedure to be used if the number of observed failures exceeds the
acceptance number . 15
6 Test and measurement procedures . 16
6.1 Standard atmospheric conditions for electrical and optical measurements . 16
6.2 Physical examination . 16

6.2.1 Visual examination . 16
6.2.2 Dimensions . 16
6.3 Electrical and optical measurements . 17
6.3.1 Alternative methods . 17
6.3.2 Precision of measurements . 17
6.3.3 General precautions . 17
6.4 Environmental tests . 17
6.5 Mechanical tests . 17
Annex A (informative) Examples of outline drawings of liquid crystal display cells . 18
Annex B (normative) Orientation of LCD modules . 21
Annex C (informative) Lot tolerance percentage defective (LTPD) sampling plans . 22
C.1 General . 22
C.1.1 Overview . 22
C.1.2 Selection of samples . 22
C.1.3 Failures . 22
C.2 Single-lot sampling method . 22
C.2.1 General . 22
C.2.2 Sample size . 22
C.2.3 Acceptance procedure . 22
C.3 Additional sample . 23
C.4 Multiple criteria . 23
C.5 100 % inspection . 23
C.6 Tightened inspection . 23
Bibliography . 28

Figure A.1 – Example of outline drawings of liquid crystal display cells . 18
Figure A.2 – Example of outline drawings of liquid crystal display cells . 19
Figure B.1 – Orientation of LCD modules . 21

Table A.1 – Example of table for dimension of each element . 19
Table C.1 – LTPD sampling plans . 24
Table C.2 – Hypergeometric sampling plans for small lot sizes of 200 or less . 26
Table C.3 – AQL and LTPD sampling plans . 27

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIQUID CRYSTAL DISPLAY DEVICES –

Part 1–1: Generic – Generic specification

FOREWORD
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