SIST-TP CEN ISO/TR 9241-308:2016
(Main)Ergonomics of human-system interaction - Part 308: Surface-conduction electron-emitter displays (SED) (ISO/TR 9241-308:2008)
Ergonomics of human-system interaction - Part 308: Surface-conduction electron-emitter displays (SED) (ISO/TR 9241-308:2008)
This part of ISO 9241 gives guidelines for surface-conduction electron-emitter displays (SED).
Ergonomie de l'interaction homme-système - Partie 308: Écrans à émission d'électrons par conduction de surface (SED) (ISO/TR 9241-308:2008)
Ergonomija medsebojnega vpliva človek-sistem - 308. del: Zasloni s površinsko prevodnim virom elektronov (SED) (ISO/TR 9241-308:2008)
Ta del standarda ISO 9241 podaja smernice za površinsko vodene oddajnike-prikazovalnike (SED).
General Information
Buy Standard
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TP CEN ISO/TR 9241-308:2016
01-februar-2016
(UJRQRPLMDPHGVHERMQHJDYSOLYDþORYHNVLVWHPGHO =DVORQLVSRYUãLQVNR
SUHYRGQLPYLURPHOHNWURQRY 6(' ,6275
Ergonomics of human-system interaction - Part 308: Surface-conduction electron-emitter
displays (SED) (ISO/TR 9241-308:2008)
Ergonomie de l'interaction homme-système - Partie 308: Écrans à émission d'électrons
par conduction de surface (SED) (ISO/TR 9241-308:2008)
Ta slovenski standard je istoveten z: CEN ISO/TR 9241-308:2015
ICS:
13.180 Ergonomija Ergonomics
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
SIST-TP CEN ISO/TR 9241-308:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
---------------------- Page: 2 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
CEN ISO/TR 9241-308
TECHNICAL REPORT
RAPPORT TECHNIQUE
December 2015
TECHNISCHER BERICHT
ICS 35.180; 13.180
English Version
Ergonomics of human-system interaction - Part 308:
Surface-conduction electron-emitter displays (SED)
(ISO/TR 9241-308:2008)
Ergonomie de l'interaction homme-système - Partie
308: Écrans à émission d'électrons par conduction de
surface (SED) (ISO/TR 9241-308:2008)
This Technical Report was approved by CEN on 19 October 2015. It has been drawn up by the Technical Committee CEN/TC 122.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TR 9241-308:2015 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
CEN ISO/TR 9241-308:2015 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
CEN ISO/TR 9241-308:2015 (E)
European foreword
This document (CEN ISO/TR 9241-308:2015) has been prepared by Technical Committee ISO/TC 159
“Ergonomics” in collaboration with Technical Committee CEN/TC 122 “Ergonomics” the secretariat of
which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of ISO/TR 9241-308:2008 has been approved by CEN as CEN ISO/TR 9241-308:2015 without
any modification.
3
---------------------- Page: 5 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
---------------------- Page: 6 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
TECHNICAL ISO/TR
REPORT 9241-308
First edition
2008-11-15
Ergonomics of human-system
interaction —
Part 308:
Surface-conduction electron-emitter
displays (SED)
Ergonomie de l'interaction homme-système —
Partie 308: Écrans à émission d'électrons par conduction de surface
(SED)
Reference number
ISO/TR 9241-308:2008(E)
©
ISO 2008
---------------------- Page: 7 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2008
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
---------------------- Page: 8 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
Contents Page
Foreword. iv
Introduction . vi
1 Scope . 1
2 Terms, definitions, symbols and abbreviated terms. 1
3 SED technology . 2
4 SED product information . 6
5 Intended context of use. 6
6 Guidelines for assessment . 7
7 Conclusion . 8
Annex A (informative) Overview of the ISO 9241 series. 9
Bibliography . 13
© ISO 2008 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard (“state of the art”, for example), it may decide by a
simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely
informative in nature and does not have to be reviewed until the data it provides are considered to be no
longer valid or useful.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 9241-308 was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 4,
Ergonomics of human-system interaction.
ISO 9241 consists of the following parts, under the general title Ergonomic requirements for office work with
visual display terminals (VDTs):
⎯ Part 1: General introduction
⎯ Part 2: Guidance on task requirements
⎯ Part 4: Keyboard requirements
⎯ Part 5: Workstation layout and postural requirements
⎯ Part 6: Guidance on the work environment
⎯ Part 9: Requirements for non-keyboard input devices
⎯ Part 11: Guidance on usability
⎯ Part 12: Presentation of information
⎯ Part 13: User guidance
⎯ Part 14: Menu dialogues
⎯ Part 15: Command dialogues
⎯ Part 16: Direct manipulation dialogues
⎯ Part 17: Form filling dialogues
iv © ISO 2008 – All rights reserved
---------------------- Page: 10 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
ISO 9241 also consists of the following parts, under the general title Ergonomics of human-system interaction:
⎯ Part 20: Accessibility guidelines for information/communication technology (ICT) equipment and services
⎯ Part 110: Dialogue principles
⎯ Part 151: Guidance on World Wide Web user interfaces
⎯ Part 171: Guidance on software accessibility
⎯ Part 300: Introduction to electronic visual display requirements
⎯ Part 302: Terminology for electronic visual displays
⎯ Part 303: Requirements for electronic visual displays
⎯ Part 304: User performance test methods for electronic visual displays
⎯ Part 305: Optical laboratory test methods for electronic visual displays
⎯ Part 306: Field assessment methods for electronic visual displays
⎯ Part 307: Analysis and compliance test methods for electronic visual displays
⎯ Part 308: Surface-conduction electron-emitter displays (SED) [Technical Report]
⎯ Part 309: Organic light-emitting diode (OLED) displays [Technical Report]
⎯ Part 400: Principles and requirements for physical input devices
⎯ Part 410: Design criteria for physical input devices
⎯ Part 920: Guidance on tactile and haptic interactions
For the other parts under preparation, see Annex A.
© ISO 2008 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
Introduction
This part of ISO 9241 introduces surface-conduction electron-emitter display (SED) technology into the
ISO 9241 series and international ergonomics standardization (it is not yet addressed in ISO 9241-307, for
instance, or in other ergonomics standards), and has been developed as a set of initial guidelines for the
assessment of the ergonomic properties of SED-based products.
Compared with other display technologies, the ergonomic advantages of SED are
⎯ isotropic behaviour of emission of light like that of CRT (cathode ray tube) technology,
⎯ no curvature, unlike CRT technology,
⎯ fast response time, like CRT technology, and
⎯ a uniform and sharp focus on the entire screen as with LCD (liquid crystal display) and PDP (plasma
display panel) technologies.
The currently known disadvantages of SED are
⎯ limited display size, from 36 inch upwards (with the potential in the future for smaller display size), and
⎯ fixed resolution compared with CRT technology.
In relation to the ergonomic requirements given in ISO 9241-303 and compared with (for example) CRT, no
other specific health aspects or disadvantages of SED technology had been identified at the time of
publication of this part of ISO 9241.
vi © ISO 2008 – All rights reserved
---------------------- Page: 12 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
TECHNICAL REPORT ISO/TR 9241-308:2008(E)
Ergonomics of human-system interaction —
Part 308:
Surface-conduction electron-emitter displays (SED)
1 Scope
This part of ISO 9241 gives guidelines for surface-conduction electron-emitter displays (SED).
2 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following term and definition, symbols and abbreviated terms apply.
2.1
surface-conduction electron-emitter display
SED
emissive visual display for direct view
NOTE See Reference [1].
2.2 Symbols and abbreviated terms
A amplitude of scan signal
scan
A amplitude of pulse width modulation signal
sig
D design viewing distance
design,view
d distance between rear and face plates
W horizontal display size (width of active display area)
view
H vertical display size (height of active display area)
view
I emission current
e
V anode voltage
a
V driving voltage
f
AR anti-reflective
BM black matrix
CRT cathode ray tube
LCD liquid crystal display
PDP plasma display panel
RD residual dispersion
SCE surface-conduction electron-emitter
© ISO 2008 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
3 SED technology
3.1 General
The SED panel has a structure as shown in Figure 1. It consists of three main parts: rear plate, face plate and
spacers. The spacers allow a vacuum without change in the confined space and are arranged at an
appropriate distance, d, between the rear and face plates, the accuracy of this distance having no effect on
the SED’s visual ergonomics.
Key
1 face plate 6 rear plate
2 phosphors/metal back film 7 insulator
3 electron emitter 8 scanning wire
4 electrode 9 spacer
5 signal wire 10 luminescence
Figure 1 — SED panel structure
Electrons emitted from surface-conduction electron-emitters (SCE) (see Figures 2 and 3) at a driving voltage,
V, biased between a pair of electrodes, are accelerated by an anode voltage, V . Luminescence from
f a
phosphors is extracted through colour filters. The panel operation is summarized in Figure 2.
2 © ISO 2008 – All rights reserved
---------------------- Page: 14 ----------------------
SIST-TP CEN ISO/TR 9241-308:2016
ISO/TR 9241-308:2008(E)
Key
1 colour filter 7 luminescence
2 phosphor 8 electron beam
3 metal back film 9 field emission
4 rear plate 10 SCE
5 black matrix 11 emission current, I
e
6 face plate
d distance (a few nanometres)
V anode voltage
a
V driving voltage
f
Figure 2 — SED panel operation
3.2 Rear plate
SCE, pairs of electrodes, scanning and signal wires are laid out in a matrix on a glass substrate. The emission
current of the SCE is controlled only by V at a
...
SLOVENSKI STANDARD
kSIST-TP FprCEN ISO/TR 9241-308:2015
01-december-2015
(UJRQRPLMDPHGVHERMQHJDYSOLYDþORYHNVLVWHPGHO 3RYUãLQVNRHOHNWURQVNR
YRGHQLRGGDMQLNLSULND]RYDOQLNL 6(' ,6275
Ergonomics of human-system interaction - Part 308: Surface-conduction electron-emitter
displays (SED) (ISO/TR 9241-308:2008)
Ergonomie de l'interaction homme-système - Partie 308: Écrans à émission d'électrons
par conduction de surface (SED) (ISO/TR 9241-308:2008)
Ta slovenski standard je istoveten z: FprCEN ISO/TR 9241-308
ICS:
13.180 Ergonomija Ergonomics
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
kSIST-TP FprCEN ISO/TR 9241-308:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
---------------------- Page: 2 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
TECHNICAL REPORT
FINAL DRAFT
FprCEN ISO/TR 9241-308
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
June 2015
ICS 35.180; 13.180
English Version
Ergonomics of human-system interaction - Part 308: Surface-
conduction electron-emitter displays (SED) (ISO/TR 9241-
308:2008)
Ergonomie de l'interaction homme-système - Partie 308:
Écrans à émission d'électrons par conduction de surface
(SED) (ISO/TR 9241-308:2008)
This draft Technical Report is submitted to CEN members for Technical Committee Approval. It has been drawn up by the Technical
Committee CEN/TC 122.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a Technical Report.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN ISO/TR 9241-308:2015 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
FprCEN ISO/TR 9241-308:2015 (E)
Contents
Page
Foreword .3
2
---------------------- Page: 4 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
FprCEN ISO/TR 9241-308:2015 (E)
Foreword
The text of ISO/TR 9241-308:2008 has been prepared by Technical Committee ISO/TC 159 “Ergonomics” of
the International Organization for Standardization (ISO) and has been taken over as FprCEN ISO/TR 9241-
308:2015 by Technical Committee CEN/TC 122 “Ergonomics” the secretariat of which is held by DIN.
This document is currently submitted to the Technical Committee Approval.
Endorsement notice
The text of ISO/TR 9241-308:2008 has been approved by CEN as FprCEN ISO/TR 9241-308:2015 without
any modification.
3
---------------------- Page: 5 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
---------------------- Page: 6 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
TECHNICAL ISO/TR
REPORT 9241-308
First edition
2008-11-15
Ergonomics of human-system
interaction —
Part 308:
Surface-conduction electron-emitter
displays (SED)
Ergonomie de l'interaction homme-système —
Partie 308: Écrans à émission d'électrons par conduction de surface
(SED)
Reference number
ISO/TR 9241-308:2008(E)
©
ISO 2008
---------------------- Page: 7 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2008
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
---------------------- Page: 8 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
Contents Page
Foreword. iv
Introduction . vi
1 Scope . 1
2 Terms, definitions, symbols and abbreviated terms. 1
3 SED technology . 2
4 SED product information . 6
5 Intended context of use. 6
6 Guidelines for assessment . 7
7 Conclusion . 8
Annex A (informative) Overview of the ISO 9241 series. 9
Bibliography . 13
© ISO 2008 – All rights reserved iii
---------------------- Page: 9 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard (“state of the art”, for example), it may decide by a
simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely
informative in nature and does not have to be reviewed until the data it provides are considered to be no
longer valid or useful.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 9241-308 was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 4,
Ergonomics of human-system interaction.
ISO 9241 consists of the following parts, under the general title Ergonomic requirements for office work with
visual display terminals (VDTs):
⎯ Part 1: General introduction
⎯ Part 2: Guidance on task requirements
⎯ Part 4: Keyboard requirements
⎯ Part 5: Workstation layout and postural requirements
⎯ Part 6: Guidance on the work environment
⎯ Part 9: Requirements for non-keyboard input devices
⎯ Part 11: Guidance on usability
⎯ Part 12: Presentation of information
⎯ Part 13: User guidance
⎯ Part 14: Menu dialogues
⎯ Part 15: Command dialogues
⎯ Part 16: Direct manipulation dialogues
⎯ Part 17: Form filling dialogues
iv © ISO 2008 – All rights reserved
---------------------- Page: 10 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
ISO 9241 also consists of the following parts, under the general title Ergonomics of human-system interaction:
⎯ Part 20: Accessibility guidelines for information/communication technology (ICT) equipment and services
⎯ Part 110: Dialogue principles
⎯ Part 151: Guidance on World Wide Web user interfaces
⎯ Part 171: Guidance on software accessibility
⎯ Part 300: Introduction to electronic visual display requirements
⎯ Part 302: Terminology for electronic visual displays
⎯ Part 303: Requirements for electronic visual displays
⎯ Part 304: User performance test methods for electronic visual displays
⎯ Part 305: Optical laboratory test methods for electronic visual displays
⎯ Part 306: Field assessment methods for electronic visual displays
⎯ Part 307: Analysis and compliance test methods for electronic visual displays
⎯ Part 308: Surface-conduction electron-emitter displays (SED) [Technical Report]
⎯ Part 309: Organic light-emitting diode (OLED) displays [Technical Report]
⎯ Part 400: Principles and requirements for physical input devices
⎯ Part 410: Design criteria for physical input devices
⎯ Part 920: Guidance on tactile and haptic interactions
For the other parts under preparation, see Annex A.
© ISO 2008 – All rights reserved v
---------------------- Page: 11 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
Introduction
This part of ISO 9241 introduces surface-conduction electron-emitter display (SED) technology into the
ISO 9241 series and international ergonomics standardization (it is not yet addressed in ISO 9241-307, for
instance, or in other ergonomics standards), and has been developed as a set of initial guidelines for the
assessment of the ergonomic properties of SED-based products.
Compared with other display technologies, the ergonomic advantages of SED are
⎯ isotropic behaviour of emission of light like that of CRT (cathode ray tube) technology,
⎯ no curvature, unlike CRT technology,
⎯ fast response time, like CRT technology, and
⎯ a uniform and sharp focus on the entire screen as with LCD (liquid crystal display) and PDP (plasma
display panel) technologies.
The currently known disadvantages of SED are
⎯ limited display size, from 36 inch upwards (with the potential in the future for smaller display size), and
⎯ fixed resolution compared with CRT technology.
In relation to the ergonomic requirements given in ISO 9241-303 and compared with (for example) CRT, no
other specific health aspects or disadvantages of SED technology had been identified at the time of
publication of this part of ISO 9241.
vi © ISO 2008 – All rights reserved
---------------------- Page: 12 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
TECHNICAL REPORT ISO/TR 9241-308:2008(E)
Ergonomics of human-system interaction —
Part 308:
Surface-conduction electron-emitter displays (SED)
1 Scope
This part of ISO 9241 gives guidelines for surface-conduction electron-emitter displays (SED).
2 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following term and definition, symbols and abbreviated terms apply.
2.1
surface-conduction electron-emitter display
SED
emissive visual display for direct view
NOTE See Reference [1].
2.2 Symbols and abbreviated terms
A amplitude of scan signal
scan
A amplitude of pulse width modulation signal
sig
D design viewing distance
design,view
d distance between rear and face plates
W horizontal display size (width of active display area)
view
H vertical display size (height of active display area)
view
I emission current
e
V anode voltage
a
V driving voltage
f
AR anti-reflective
BM black matrix
CRT cathode ray tube
LCD liquid crystal display
PDP plasma display panel
RD residual dispersion
SCE surface-conduction electron-emitter
© ISO 2008 – All rights reserved 1
---------------------- Page: 13 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
3 SED technology
3.1 General
The SED panel has a structure as shown in Figure 1. It consists of three main parts: rear plate, face plate and
spacers. The spacers allow a vacuum without change in the confined space and are arranged at an
appropriate distance, d, between the rear and face plates, the accuracy of this distance having no effect on
the SED’s visual ergonomics.
Key
1 face plate 6 rear plate
2 phosphors/metal back film 7 insulator
3 electron emitter 8 scanning wire
4 electrode 9 spacer
5 signal wire 10 luminescence
Figure 1 — SED panel structure
Electrons emitted from surface-conduction electron-emitters (SCE) (see Figures 2 and 3) at a driving voltage,
V, biased between a pair of electrodes, are accelerated by an anode voltage, V . Luminescence from
f a
phosphors is extracted through colour filters. The panel operation is summarized in Figure 2.
2 © ISO 2008 – All rights reserved
---------------------- Page: 14 ----------------------
kSIST-TP FprCEN ISO/TR 9241-308:2015
ISO/TR 9241-308:2008(E)
Key
1 colour filter 7 luminescence
2 phosphor 8 electron beam
3 metal back film 9 field emission
4 rear plate 10 SCE
5 black matrix 11 emission current, I
e
6 face plate
d distance (a few nanometres)
V anode voltage
a
V driving voltage
f
Figure 2 — SED panel
...
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