IEC 62908-12-10:2017

Touch and interactive displays - Part 12-10: Measurement methods of touch displays - Touch and electrical performance

IEC 62908-12-10:2017(E) specifies the standard measuring conditions and methods for determining touch performance of a touch sensor module. This document is applicable to touch sensor modules, where the structural relationship between touch sensor, touch controller, touch sensor module, display panel, touch display panel, and touch display module is defined in IEC 62908-1-2.
The contents of the corrigendum of November 2018 have been included in this copy.

General Information

• Status: Published
• Publication Date: 07-Jun-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 11.040.10 - Anaesthetic, respiratory and reanimation equipment
• ICS: 31.120 - Electronic display devices
• Technical Committee: TC 110 - Electronic displays
• Drafting Committee: WG 9 - TC 110/WG 9
• Current Stage: DELPUB - Deleted Publication
• Start Date: 26-Nov-2021
• Completion Date: 30-Jan-2023

Relations

• Corrected By: IEC 62908-12-10:2017/COR1:2018 - Corrigendum 1 - Touch and interactive displays - Part 12-10: Measurement methods of touch displays - Touch and electrical performance
• Effective Date: 05-Sep-2023
• Revised: IEC 62908-12-10:2023 - Touch and interactive displays - Part 12-10: Measurement methods of touch displays - Touch and electrical performance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62908-12-10 ®
Edition 1.0 2017-06
INTERNATIONAL
STANDARD
colour
inside
Touch and interactive displays –
Part 12-10: Measurement methods of touch displays – Touch and electrical
performance
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IEC 62908-12-10 ®
Edition 1.0 2017-06
INTERNATIONAL
STANDARD
colour
inside
Touch and interactive displays –

Part 12-10: Measurement methods of touch displays – Touch and electrical

performance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.120 ISBN 978-2-8322-4394-7

– 2 – IEC 62908-12-10:2017  IEC 2017
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Measuring conditions . 7
4.1 Standard measuring environmental conditions . 7
4.2 Standard atmospheric conditions for reference measurements and tests . 8
4.3 Standard positioning equipment and setup . 8
4.4 Human operator alternative to standard positioning equipment . 9
4.5 Test bar size, shape and material parameters . 10
5 Touch performance measuring methods . 11
5.1 General . 11
5.2 Accuracy test . 11
5.2.1 Purpose . 11
5.2.2 Test procedure . 11
5.2.3 Report . 15
5.3 Repeatability/jitter test . 15
5.3.1 Purpose . 15
5.3.2 Test procedure . 15
5.3.3 Report . 17
5.4 Linearity test . 18
5.4.1 Purpose . 18
5.4.2 Test procedure . 18
5.4.3 Report . 20
5.5 Reproducibility test . 20
5.5.1 Purpose . 20
5.5.2 Test procedure . 21
5.5.3 Report . 22
5.6 Signal-to-noise ratio (SNR) test . 23
5.6.1 Purpose . 23
5.6.2 Test procedure . 24
5.6.3 Report . 25
5.7 Report rate test . 25
5.7.1 Purpose . 25
5.7.2 Test procedure . 25
5.7.3 Report . 26
5.8 Latency test . 26
5.8.1 Purpose . 26
5.8.2 Test procedure . 26
5.8.3 Report . 27
5.9 Electrical noise immunity test . 27
5.9.1 Purpose . 27
5.9.2 Test procedure . 27
5.9.3 Report . 28
5.10 Water droplet immunity test . 28
5.10.1 Purpose . 28
5.10.2 Test procedure . 29

5.10.3 Report . 29
5.11 Optical noise immunity test . 29
5.11.1 Purpose . 29
5.11.2 Test procedure . 30
5.11.3 Report . 30
5.12 Power consumption test . 30
5.12.1 Purpose . 30
5.12.2 Test procedure . 30
5.12.3 Report . 30
5.13 Perpendicular touch/hover distance test . 30
5.13.1 Purpose . 30
5.13.2 Test procedure . 30
5.13.3 Report . 31
Annex A (informative) Electrical performance measuring methods of touch sensor . 32
A.1 Resistance . 32
A.1.1 General . 32
A.1.2 Test samples . 32
A.1.3 Measurement equipment . 32
A.1.4 Procedures . 32
A.1.5 Data analysis . 33
A.1.6 Report . 33
A.2 Trans-capacitance . 33
A.2.1 General . 33
A.2.2 Test samples . 33
A.2.3 Measurement equipment . 33
A.2.4 Procedure . 33
A.2.5 Data analysis . 34
A.2.6 Report . 34

Figure 1 – Composition of test equipment . 9
Figure 2 – Concept of performance measurement . 9
Figure 3 – Example of manual test tool (left), positioning without triggering a touch
event (middle) and recording a touch event (right) . 10
Figure 4 – Examples of test bars . 10
Figure 5 – Location of edge area and centre area . 12
Figure 6 – Point grid . 12
Figure 7 – Accuracy definition . 13
Figure 8 – Example of measurement result and calculation of accuracy . 15
Figure 9 – Repeatability in touch sensor module . 16
Figure 10 – Example of measurement result for repeatability . 17
Figure 11 – Dragging line for linearity test . 18
Figure 12 – Linearity definition . 19
Figure 13 – Example of measurement and calculation of linearity . 20
Figure 14 – Example of reproducibility test results . 21
Figure 15 – Reproducibility test procedure . 22
Figure 16 – Examples of measurements of reproducibility – Veloc
...