1、PD ISO/TR9241-308:2008ICS 13.180; 35.180NO COPYING WITHOUTBSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWPUBLISHED DOCUMENTErgonomics of human-system interactionPart 308: Surface-conductionelectron-emitterdisplays (SED)PD CEN ISO/TR 9241-308:2015PD CEN ISO/TR 9241-308:2015ISBN 978 0 580 90914 6A
2、mendments/corrigenda issued since publicationDate Comments31 December 2015 This corrigendum renumbers PD ISO/TR 9241-308:2008 as PD CEN ISO/TR 9241-308:2015This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 September 2009 The British Standa
3、rds Institution 2015. Published by BSI Standards Limited 2015National forewordThis Published Document is the UK implementation of CEN ISO/TR 9241-308:2015. It is identical to ISO/TR 9241-308:2008. It supersedes PD ISO/TR 9241-308:2008 which is withdrawn.The UK participation in its preparation was en
4、trusted to Technical Committee PH/9, Applied ergonomics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Complia
5、nce with a British Standard cannot confer immunity from legal obligations.TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN ISO/TR 9241-308 December 2015 ICS 35.180; 13.180 English Version Ergonomics of human-system interaction - Part 308: Surface-conduction electron-emitter displays (SED)
6、(ISO/TR 9241-308:2008) Ergonomie de linteraction homme-systme - Partie 308: crans mission dlectrons 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 nati
7、onal 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, Slo
8、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any mea
9、ns reserved worldwide for CEN national Members. Ref. No. CEN ISO/TR 9241-308:2015 EPD CEN ISO/TR 9241-308:2015 CEN ISO/TR 9241-308:2015 (E)European forewordThis document (CEN ISO/TR 9241-308:2015) has been prepared by Technical Committee ISO/TC 159 “Ergonomics” in collaboration with Technical Commit
10、tee 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 noticeT
11、he text of ISO/TR 9241-308:2008 has been approved by CEN as CEN ISO/TR 9241-308:2015 without any modification.PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved iiiContents PageForeword ivIntroduction. vi1Scope . 12Terms, definitions, symbols and abbreviated terms. 13SED tec
12、hnology 24SED product information . 65Intended context of use 66Guidelines for assessment 77Conclusion 8Annex A (informative) Overview of the ISO 9241 series. 9Bibliography. 13PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E)iv ISO 2008 All rights reser
13、vedForeword 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
14、a technical committee has beenestablished 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 closelywith the International Electrotechnical Commission (IEC) on all matter
15、s of electrotechnical standardization. International Standards are drafted in accordancewith the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the technical committees are circulated
16、to the member bodies for voting. Publication as an International Standard requires approval byat least 75 % of the member bodies casting a vote. In exceptional circumstances, when a technical committee has collected data of a different kind from thatwhich is normallypublished asan International Stan
17、dard (“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 Reportis entirelyinformative in nature and does not have to be reviewed until the data it provides are considered to be no longer valid or useful. A
18、ttention 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/TR9241-308 was prepared by Technical Committee ISO/TC159, Ergonomics, Subcommittee SC 4, Ergonomic
19、s of human-system interaction. ISO9241 consists of the following parts, under the general title Ergonomic requirements for office work withvisual display terminals (VDTs): Part 1: General introduction Part 2: Guidance on task requirements Part 4: Keyboard requirements Part 5: Workstation layout and
20、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
21、 17: Form filling dialoguesPD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved vISO 9241 also consists of the following parts, under the general title Ergonomics of human-system interaction: Part 20: Accessibility guidelines f
22、or information/communication technology (ICT) equipment and services Part110: 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 forelectronic vis
23、ual displays Part 303: Requirements for electronic visual displays Part 304: User performance test methods forelectronic visual displays Part 305: Optical laboratory test methods for electronic visual displays Part 306: Field assessment methods forelectronic visual displays Part 307: Analysis and co
24、mpliance 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 phy
25、sical input devices Part 920: Guidance on tactile and haptic interactionsFor the other parts under preparation, see Annex A. PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E)vi ISO 2008 All rights reservedIntroduction This part of ISO9241 introduces sur
26、face-conduction electron-emitter display (SED) technologyinto theISO9241 series and international ergonomics standardization (it is not yet addressed in ISO 9241-307, forinstance, orin other ergonomics standards), and has been developed as a set of initial guidelines for theassessment of the ergonom
27、ic properties of SED-based products. Compared with other displaytechnologies, the ergonomic advantages of SED are isotropic behaviour of emission of light like that of CRT (cathode raytube) technology, no curvature, unlike CRT technology, fast response time, like CRT technology, and a uniform and sh
28、arp focus on the entire screen as with LCD (liquid crystal display) and PDP (plasmadisplay panel)technologies. The currently known disadvantages of SED are limited display size, from 36 inchupwards (with the potential in the future for smaller display size), and fixed resolution compared with CRT te
29、chnology.In relation to the ergonomic requirements given in ISO9241-303 and compared with (for example) CRT, noother specific health aspects or disadvantages of SED technology had been identified at the time of publication of this part of ISO 9241. PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)P
30、D ISO/TR 9241-308:2008TECHNICAL REPORT ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved 1Ergonomics 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 Ter
31、ms, 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 visualdisplay for directviewNOTE See Reference 1.2.2Symbols and abbreviated termsAscan
32、amplitude of scan signal Asigamplitude of pulsewidth modulation signal Ddesign,viewdesign viewing distance d distance between rear and face platesWviewhorizontal display size (width of active displayarea)Hviewvertical display size (heightof active display area)Ieemission current Vaanode voltage Vfdr
33、ivingvoltage AR anti-reflectiveBM blackmatrixCRT cathode raytubeLCD liquid crystal displayPDP plasmadisplaypanel RD residual dispersionSCE surface-conduction electron-emitterPD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E)2 ISO 2008 All rights reserved
34、3 SED technology3.1 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 atan appropriate distance, d, between the rear and face plates, the ac
35、curacy of this distance having no effect on the SEDs visual ergonomics.Key1 face plate6 rear plate 2 phosphors/metal back film7 insulator 3 electron emitter 8 scanning wire 4 electrode9 spacer 5 signal wire 10 luminescence Figure 1 SED panel structure Electrons emitted from surface-conduction electr
36、on-emitters (SCE) (see Figures 2 and 3) at a driving voltage, Vf, biased between a pair of electrodes, are accelerated by an anode voltage, Va. Luminescence fromphosphors is extracted through colour filters. The panel operation is summarized in Figure 2. PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:20
37、08(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved 3Key1 colour filter 7 luminescence 2 phosphor 8 electron beam 3 metal back film9 field emission4 rear plate 10 SCE 5 black matrix 11 emission current, Ie6 face plate d distance (a few nanometres) Vaanodevoltage Vfdrivin
38、g voltage 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 emissioncurrent of the SCE is controlled only by Vfat a constant Va. The diode mechanism of the SCE operation requires onlya simple matrix stru
39、cture for the emitter array.The SED is driven by line sequential scanning, as shown in Figure3. The scanning circuit generates the scan signal, the amplitude of which is Ascan, and the signal modulation circuit generates a pulse width modulation signal (amplitude, Asig)which is synchronized with the
40、 scan signal. PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E)4 ISO 2008 All rights reservedKey1 face plate5 scan signal 2 rear plate 6 modulation signal 3 signal modulationdriver 7 SCE 4 scanning driver Ascanamplitude of scan signal Asigamplitude of p
41、ulse width modulation signal Vaanodevoltage Figure 3 SED driving method 3.3 Face plate The face plate consists of blackmatrix (BM), colour filters, phosphors and a metal (aluminium) back. P22 phosphors are adopted torealize a CRT grade colour gamut. Colour filters play the roles of reducing diffuse
42、reflectance and improving colour purity, with the effect ofwidening the gamut. The BM opening pattern asshown in Figure 4 is designed from the viewpoints of reducing the diffuse reflectance and matching with theelectron beam shape. PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308
43、:2008ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved 5Key1 red 5 BM2 green 6 phosphor 3 blue 7 colour filter 4 metal back 8 face plate Figure 4 BM opening patternPD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E)6 ISO 2008 All rights reserved4 SED p
44、roduct information The following are the typical physical and design data for a plot-type SED product. Pixel pitch horizontal/vertical: (H) 0,615 mm (V) 0,615 mm. Number of pixels horizontal/vertical: (H) 1 280 3 (V) 768. Horizontal displaysize, Wview: 787,2 mm. Vertical display size, Hview: 472,3 m
45、m. Active diagonal: 918 mm (36,1 inch). Front: glasspanel with AR treatment. Table 1 presents the basicdifferences between an SED and other VDT devices.Table 1 Basic differences between SED and other VDT devices Item SED CRT LCD PDP Emitting principle Cold-cathode luminance Hot-cathodeluminance Back
46、 light Photo-luminance Anode voltage 10 kV 30 kV Optical performance Isotropic Isotropic Anisotropic Isotropic Face plate thickness Thin ThickglassThin ThinPixel type Fixed type No fixed type Fixed type Fixed type Display method Line by line scan(impulse drive) Scan (beam impulse) Line by line scan
47、(hold drive)aSub-frame tiling aTypical activematrixLCD.5 Intended context of use See Table 2.Table 2 Typical intended context of use for anSED product Design screen illuminance At indoor locations up to 600 lxIlluminant CIE illuminant A and D65 Content and perception Reality information: imaging of
48、objects and scenes that do have existing originals inour world (e.g. faces, people, landscapes, etc.) in full-colour presentationaDesign viewing distance 3 HviewDesign viewing direction Perpendicular Design viewing direction range Maximum angle of inclination, : 40; azimuth angle,: 0 to 360 aAt the
49、time of publication of this part ofISO9241, SED products were being used mainly for “reality information”, but this can alsoapply to “artificialinformation”.PD CEN ISO/TR 9241-308:2015ISO/TR 9241-308:2008(E)PD ISO/TR 9241-308:2008ISO/TR 9241-308:2008(E) ISO 2008 All rights reserved 76 Guidelines for assessmentThese guidelines are based on initial optical measurements of a SED product in an accredited optical lab, and the measurements discussed at the TV
