Iec 62341 6 2 2015

I EC 62341 -6-2 ® Ed i ti on 201 5-1 I N TERN ATI ON AL STAN DARD colour i n sid e Org an i c l i g h t em i tti ng d i od e (OLED) d i spl ays – I E C 62 341 -6-2 : 01 5-1 2(en ) Part 6-2: M easu ri n g m eth od s of vi su al q u al i ty an d am bi en t perform an ce International Electrotechnical Commission T H I S P U B L I C AT I O N I S C O P YRI G H T P RO T E C T E D C o p yri g h t © I E C , G e n e v a , S wi tz e rl a n d Al l or ri g h ts by re s e rve d an y e i th e r m eans, IEC c o p y ri g h t yo u r IEC 3, or or l ocal I EC C e n t l ru e de CH -1 21 I E C's h a ve U n l es s o th e rwi s e e l e c t ro n i c or m em be r an N ati o n a l e n q u i ry m em be r s p e c i fi e d , m e ch a n i c a l , a bo u t N a ti o n a l no p a rt i n cl u d i n g C o m m i t te e o b ta i n i n g C o m m i tt e e th e p u b l i c a ti o n c o u n t ry a d d i ti o n a l fo r O ffi c e in of th i s p h o t o c o p yi n g fu rt h e r ri g h t s an d of th e to th i s re p ro d u c e d re q u e s t e r wi t h o u t If yo u h a ve pl eas e or u ti l i z e d p e rm i s s i o n an y c o n t a ct in in an y q u e s ti o n s th e fo rm wri t i n g fro m ab o u t a d d re s s I EC bel ow or i n fo rm a t i o n Tel : + 41 22 91 02 1 F a x: +41 22 91 03 00 G e n e va i n fo @ i e c c h 20 be p u b l i c a ti o n , V a re m b é S wi t ze rl a n d m ay m i c ro fi l m , www i e c c h Ab ou t th e I E C Th e I n t e rn a ti o n a l I n t e rn a t i o n a l E l e c t ro t e c h n i c a l S t a n d a rd s fo r al l Com m i ssi o n e l e c t ri c a l , (I E C ) e l e c t ro n i c and is th e re l a t e d l ea d i n g g l obal o rg a n i z a t i o n th a t p re p a re s an d pu bl i sh es tech n o l o g i es Ab o u t I E C p u b l i ca ti o n s Th e tech n i cal l ates t e d i ti o n , co n te n t a of IEC c o rri g e n d a p u b l i c a ti o n s or an is ke p t am en d m en t u n d er might c o n s ta n t h a ve been I E C C atal og u e - webs tore i ec ch /catal og u e Th e s ta n d - a l o n e b i b l i o g p h i ca l Te ch n i ca l a p p l i cati o n i n fo rm ati o n on S p eci fi cati o n s , d o cu m e n ts Ava i l a b l e fo r fo r I EC PC, M ac th e I n te rn a ti o n a l An d ro i d e n ti re S ta n d a rd s , Re p o rts OS, an d o th e r Ta b l ets an d i Pad a d va n ce d va ri e ty of s e a rch e n a b l es cri te ri a com m i tte e , … ) an d th e Th e wo rl d ' s e l e ctri ca l wi th d wn It to (re fe re n ce al so g i ve s fi n d I EC i n fo rm ati o n on P l e as e m a ke s u re th a t yo u h a ve th e d e fi n i ti o n s in a d d i ti o n a l on l i n e co n ta i n i n g Engl ish an d l an g u ag es d i cti o n a ry m o re F re n ch , Al s o Voca b u l a ry th a n wi th e l e ctro n i c 000 as th e an d te rm s e q u i va l e n t kn o wn (I E V) of 30 te rm s an d in I n te rn a ti o n a l on l i n e I E C G l os s ary - s td i ec ch /g l os s ary p u b l i ca ti o n s n u m b e r, I EC l ead i n g te rm s E l e ctro tech n i ca l I E C pu bl i cati on s s earch - www i ec ch /s earch pu b Th e by E l ectroped i a - www el ectroped i a org co n s u l ti n g Te ch n i ca l re vi e w pu bl i sh ed te xt, by a tech n i cal p ro j e cts , re p l a ce d M o re th a n En g l i sh cl a u s e h a ve p u b l i ca ti o n s 77, 60 an d of I EC been 86 an d 000 F re n ch e l ectrote ch n i ca l e xtra cte d p u b l i cati o n s co l l ecte d from from i ss u e d e a rl i e r te rm i n o l o g y th e Te rm s s i n ce an d 2002 p u b l i ca ti o n s e n tri e s S om e of in D e fi n i ti o n s I EC e n tri e s TC 37, CI S P R I E C J u s t Pu bl i s h ed - webs tore i ec ch /j u s tpu bl i s h ed S ta y up d e ta i l s al so to al l o n ce d ate n ew a on al l n ew p u b l i cati o n s m o n th b y em a i l I EC p u b l i ca ti o n s re l ea s e d J ust Ava i l a b l e P u bl i sh ed on l i n e an d I E C C u s tom er S ervi ce C en tre - webs tore i ec ch /cs c If yo u n eed wi s h C e n tre : International Electrotechnical Commission to g i ve us fu rth e r a ss i s ta n ce , csc@ i ec ch yo u r fe e d b a ck p l e as e ta ct on th e th i s p u b l i ca ti o n or C u s tom e r S e rvi ce I E C 62 341 -6-2 ® Ed i ti on 201 5-1 I N TE RN ATI ON AL S TAN DARD colour i n sid e Org an i c l i g h t em i tti n g d i od e (OLE D ) d i s pl a ys – P art 6-2: M eas u ri n g m eth od s of vi s u al q u al i ty an d am bi en t perform an ce I N TERN ATI ON AL ELECTROTECH N I CAL COM MI SSI ON I CS 31 260 I SB N 978-2-8322-3026-8 Warn i n g ! M ake s u re th at you obtai n ed th i s pu bl i cati on from an au th ori zed d i stri bu tor ® Reg i stered trad emark of th e I n ternati on al El ectrotech ni cal Commi ssi on International Electrotechnical Commission – – IEC 234 -6-2 : 20 © I EC 201 CON TE N TS F O RE W O RD S cope N o rm a t i v e T e rm s , re fe r e n c e s d e fi n i t i o n s an d and T e rm s d e fi n i t i o n s Ab b re v i a ti o n s S t r u c t u re o f m e a s u ri n g S ta n d a rd m e a s u ri n g eq u i pm en t d i ti on s S ta n d a rd m e a s u ri n g S ta n d a rd l i g h ti n g e n v i ro n m e n t a l D a rk - ro o m Am b i e n t i l l u m i n a t i o n S ta n d a rd s e tu p co n d i ti o n s co n d i ti o n s 2 co n d i ti o n s co n d i ti o n s 1 co n d i ti o n s G e n e l Ad j u s tm e n t o f O L E D 3 S ta rti n g co n d i ti o n s C o n d i ti o n s Vi s u a l i n s p e cti o n d i spl a y m od u l es o f m e a s u re m e n ts o f m e a s u ri n g eq u i pm en t o f s ta ti c i m a g e s G e n e l C l a s s i fi c a t i o n o f vi s i b l e d e fe c t s G e n e l 2 R e fe r e n c e e xa m p l e s R e fe r e n c e e xa m p l e fo r l i n e R e fe r e n c e e xa m p l e fo r m u a b b re v i a t i o n s Vi s u a l i n s p e cti o n m e th o d fo r s u b p i x e l and d e fe c t s d e fe c t s d e fe c t s c r i t e ri a S t a n d a rd i n s p e cti o n co n d i ti o n s S t a n d a rd i n s p e cti o n m e th o d 3 I n s p e cti o n E l e c t ro - o p t i c a l c ri t e r i a m e a s u ri n g R e fl e c t i o n 21 m e th o d s u n d er a m bi en t i l l u m i n ati on m e a s u re m e n t s P u rp o s e M e a s u ri n g co n d i ti on s M e a s u ri n g th e h e m i s p h e ri c a l M e a s u ri n g th e re fl e c t a n c e d i ffu s e r e fl e c t a n c e fa c t o r fo r a d i re c t i o n a l l i g h t s o u rc e Am b i e n t c o n t r a s t r a t i o P u rp o s e 2 M e a s u ri n g co n d i ti on s M e a s u ri n g m e th o d 7 D i s p l a y d a yl i g h t c o l o u r P u rp o s e M e a s u ri n g co n d i ti on s 3 M e a s u ri n g m e th o d D a yl i g h t c o l o u r g a m u t v o l u m e P u rp o s e M e a s u ri n g co n d i ti o n s M e a s u ri n g m e th o d International Electrotechnical Commission I EC 62341 -6-2: 201 © I EC 201 4 – – Re p o rti n g An n e x A ( i n fo rm a ti ve ) M e a s u ri n g re l a ti ve p h o to l u m i n e s c e n c e c o n tri b u ti o n fro m d i s p l a ys A P u rp o s e A M e a s u ri n g co n d i ti o n s A M e a s u ri n g th e b i - s p e ctra l p h o to l u m i n e s c e n ce o f th e d i s p l a y A D e te rm i n i n g th e re l a ti ve P L c o n tri b u ti o n fro m th e d i s p l a y An n e x B ( i n fo rm a ti ve ) D i a g n o s ti c fo r o b s e rvi n g d i s p l a y l u m i n a n c e d e p e n d e n c e fro m a m b i e n t i l l u m i n a ti o n B P u rp o s e B M e a s u ri n g m e th o d An n e x C ( i n fo rm a ti ve ) C a l cu l a ti o n m e th o d o f d a yl i g h t c o l o u r g a m u t vo l u m e C P u rp o s e C P ro ce d u re fo r ca l c u l a ti n g th e c o l o u r g a m u t vo l u m e C S u rfa c e s u b d i vi s i o n m e th o d fo r C I E L AB g a m u t vo l u m e ca l c u l a ti o n C P u rp o s e C As s u m p ti o n s C 3 Al g o ri th m C S o ftwa re e xa m p l e e xe c u ti o n B i b l i o g p h y F i g u re –E x a m p l e o f vi s u a l i n s p e cti o n ro o m s e tu p fo r c o n tro l o f a m b i e n t ro o m l i g h ti n g a n d re fl e c ti o n s 1 F i g u re –E x a m p l e o f m e a s u re m e n t g e o m e tri e s fo r a u n i fo rm h e m i s p h e ri c a l d i ffu s e i l l u m i n a ti o n c o n d i ti o n u s i n g a n i n te g ti n g s p h e re a n d s a m p l i n g s p h e re F i g u re – D i re c ti o n a l s o u rce m e a s u re m e n t g e o m e try u s i n g a n i s o l a te d s o u rce F i g u re – D i re c ti o n a l s o u rce m e a s u re m e n t g e o m e try u s i n g a ri n g l i g h t s o u rce F i g u re – L a yo u t d i a g m o f m e a s u re m e n t s e tu p F i g u re – C l a s s i fi c a ti o n o f vi s i b l e d e fe cts F i g u re – B ri g h t s u b p i x e l d e fe cts F i g u re – C ri te ri a fo r cl a s s i fyi n g b ri g h t a n d d a rk s u b p i xe l d e fe c ts F i g u re – B ri g h t a n d d a rk l i n e d e fe cts F i g u re –S a m p l e i m a g e o f l i n e m u F i g u re 1 – E xa m p l e o f s p o t m u F i g u re – S e tu p co n d i ti o n fo r vi s u a l i n s p e c ti o n o f e l e c tro - o p ti c a l vi s u a l d e fe cts 2 F i g u re – S h a p e o f s cra tc h a n d d e n t d e fe c t F i g u re –E xa m p l e o f n g e i n co l o u rs p ro d u c e d b y a g i ve n d i s p l a y a s re p re s e n te d b y th e C I E L AB c o l o u r s p a ce F i g u re A – S c a l e d b i - s p e ctra l p h o to l u m i n e s c e n c e re s p o n s e fro m a d i s p l a y F i g u re A – D e co m p o s e d b i - s p e c tra l p h o to l u m i n e s ce n c e re s p o n s e fro m a d i s p l a y F i g u re B – E x a m p l e o f d i s p l a y l u m i n a n c e re d u cti o n c a u s e d b y th e h i g h i l l u m i n a n c e fro m a h i g h i n te n s i t y L E D fl a s h l i g h t d i re cte d a t th e d i s p l a y s u rfa c e F i g u re C – An a l ys i s fl o w c h a rt fo r c a l cu l a ti n g th e c o l o u r g a m u t vo l u m e F i g u re C – G p h i c a l re p re s e n ta ti o n o f th e c o l o u r g a m u t vo l u m e fo r s RG B i n th e C I E L AB c o l o u r s p a ce T a b l e – D e fi n i ti o n s fo r typ e s o f s cra tch a n d d e n t d e fe cts International Electrotechnical Commission – – T a b l e – E i g e n va l u e s M an d M I E C 234 -6-2 : 20 © I E C 201 fo r C I E d a yl i g h t I l l u m i n a n ts D a n d D T a b l e – E x a m p l e o f m i n i m u m co l o u rs re q u i re d fo r g a m u t vo l u m e ca l c u l a ti o n o f a - p ri m a ry - b i t d i s p l a y T a b l e – M e a s u re d tri s ti m u l u s va l u e s fo r th e m i n i m u m s e t o f c o l o u rs re q u i re d fo r g a m u t vo l u m e c a l cu l a ti o n u n d e r th e s p e c i fi e d (see Tabl e 3) a m b i e n t i l l u m i n a ti o n co n d i ti o n 3 T a b l e – C a l c u l a te d wh i te p o i n t i n th e d a rke n e d ro o m a n d d a yl i g h t a m b i e n t c o n d i ti o n 3 T a b l e – C o l o u r g a m u t vo l u m e i n th e C I E L AB c o l o u r s p a c e 3 T a b l e C – T ri s ti m u l u s va l u e s o f th e s RG B p ri m a ry c o l o u rs T a b l e C –E x a m p l e o f s RG B c o l o u r s e t re p re s e n te d i n th e C I E L AB c o l o u r s p a c e T a b l e C –E x a m p l e o f s RG B c o l o u r g a m u t vo l u m e i n th e C I E L AB c o l o u r s p a c e International Electrotechnical Commission I EC 62341 -6-2: 201 © I EC 201 – – I N TE RN ATI O N AL E L E C TRO TE C H N I C AL C O M M I S S I O N O RG AN I C LI G H T E M I TTI N G D I O D E (O L E D ) D I S P L AYS – P a rt -2 : M e a s u ri n g m e th o d s o f vi s u a l q u a l i t y a n d a m b i e n t p e rfo rm a n ce F O RE W O RD 1) T h e I n te rn a ti o n a l E l e c t ro t e c h n i c a l C o m m i s s i o n ( I E C ) i s a wo rl d wi d e o rg a n i z a ti o n fo r s t a n d a rd i z a t i o n c o m p ri s i n g al l n a ti o n a l e l e c tro t e c h n i c a l c o m m i t te e s (I E C N ati o n a l C o m m i tt e e s ) Th e o bj ect of I EC is to p ro m o te i n te rn a ti o n a l c o - o p e t i o n o n a l l q u e s t i o n s c o n c e rn i n g s ta n d a rd i za t i o n i n th e e l e c t ri c a l a n d e l e c tro n i c fi e l d s T o th i s end and Te ch n i ca l in a d d i ti o n Re p o rts , to o t h e r a c ti vi ti e s , P u bl i cl y Ava i l a b l e I EC pu bl i sh es S p e c i fi c a t i o n s I n te rn a ti o n a l (P AS ) an d S t a n d a rd s , G u i d es Te ch n i ca l ( h e re a ft e r S p e c i fi c a ti o n s , re fe rre d to as “I EC P u b l i c a ti o n ( s ) ” ) T h e i r p re p a t i o n i s e n t ru s t e d to te c h n i c a l c o m m i tte e s ; a n y I E C N a ti o n a l C o m m i tte e i n te re s t e d in th e s u bj ect d eal t wi t h m ay p a rt i c i p a t e in th i s p re p a t o ry wo rk I n t e rn a ti o n a l , g o ve rn m e n t a l an d n on - g o v e rn m e n t a l o rg a n i z a ti o n s l i a i s i n g wi th th e I E C a l s o p a rti c i p a te i n t h i s p re p a ti o n I E C c o l l a b o te s c l o s e l y wi t h th e I n te rn a t i o n a l O rg a n i z a ti o n fo r S t a n d a rd i z a ti o n (I S O) in a c c o rd a n c e wi th d i ti on s d e t e rm i n e d by a g re e m e n t b e t we e n th e t wo o rg a n i za ti o n s 2) T h e fo rm a l d e c i s i o n s o r a g re e m e n ts o f I E C o n t e c h n i c a l m a t te rs e xp re s s , a s n e a rl y a s p o s s i b l e , a n i n t e rn a ti o n a l s en s u s of opi n i on on th e re l e v a n t s u b j e c ts s i n ce e ach te c h n i c a l c o m m i t te e h as re p re s e n t a t i o n fro m al l i n te re s te d I E C N a ti o n a l C o m m i t te e s 3) I E C P u b l i c a ti o n s h a ve th e fo rm o f re c o m m e n d a ti o n s fo r i n t e rn a ti o n a l u se an d a re a c c e p t e d b y I E C N ati o n a l C o m m i tt e e s i n th a t s e n s e W h i l e a l l re a s o n a b l e e ffo rt s a re m a d e t o e n s u re th a t t h e t e c h n i c a l c o n t e n t o f I E C P u b l i c a ti o n s is a c c u te , IEC can n ot be h el d re s p o n s i b l e fo r th e wa y in wh i c h th e y a re u sed or fo r an y m i s i n t e rp re t a t i o n b y a n y e n d u s e r 4) In o rd e r t o p ro m o te t n s p a re n t l y to i n te rn a t i o n a l th e m a xi m u m u n i fo rm i ty, e xt e n t I EC possi bl e in N a ti o n a l th e i r C o m m i tte e s n a ti o n a l an d u n d e rta ke re g i o n a l to appl y IEC p u b l i c a ti o n s P u b l i c a ti o n s An y d i v e rg e n c e b e t we e n a n y I E C P u b l i c a ti o n a n d t h e c o rre s p o n d i n g n a ti o n a l o r re g i o n a l p u b l i c a t i o n s h a l l b e c l e a rl y i n d i c a te d i n t h e l a tt e r 5) I E C i t s e l f d o e s n o t p ro vi d e a n y a tt e s ta ti o n o f c o n fo rm i ty a s s e s s m e n t s e rvi c e s a n d , i n s o m e a re a s , I n d e p e n d e n t c e rti fi c a t i o n b o d i e s p ro vi d e c o n fo rm i t y a c c e s s t o I E C m a rk s o f c o n fo rm i ty I E C i s n o t re s p o n s i b l e fo r a n y s e rvi c e s c a rri e d o u t b y i n d e p e n d e n t c e rt i fi c a t i o n b o d i e s 6) 7) Al l u s e rs s h o u l d e n s u re th a t t h e y h a v e t h e l a t e s t e d i ti o n o f th i s p u b l i c a ti o n N o l i a b i l i t y s h a l l a t t a c h to I E C o r i ts d i re c to rs , e m p l o y e e s , s e rva n t s o r a g e n ts i n c l u d i n g i n d i vi d u a l e xp e rts a n d m e m b e rs o f i t s t e c h n i c a l c o m m i tt e e s a n d I E C N a ti o n a l C o m m i t te e s fo r a n y p e rs o n a l i n j u ry, p ro p e rty d a m a g e o r oth e r d am ag e e xp e n s e s of a n y a ri s i n g ou t n a tu re wh a t s o e v e r, wh e th e r d i re c t of p u b l i c a ti o n , u se th e o f, or o r i n d i re c t , re l i a n c e u pon, o r fo r c o s t s th i s I EC (i n cl u d i n g P u b l i c a ti o n or l eg al fe e s ) and any o th e r I EC P u b l i ca ti o n s 8) Atte n ti o n i s d wn t o th e N o rm a t i ve re fe re n c e s c i t e d i n t h i s p u b l i c a t i o n U s e o f t h e re fe re n c e d p u b l i c a ti o n s i s i n d i s p e n s a b l e fo r th e c o rre c t a p p l i c a ti o n o f th i s p u b l i c a t i o n 9) Atte n ti o n i s d wn t o th e p o s s i b i l i t y th a t s o m e o f th e e l e m e n ts o f th i s I E C P u b l i c a t i o n m a y b e th e s u b j e c t o f p a te n t ri g h t s I E C s h a l l n o t b e h e l d re s p o n s i b l e fo r i d e n t i fyi n g a n y o r a l l s u c h p a t e n t ri g h ts I n te rn a ti o n a l S ta n d a rd I EC 62341 -6-2 h as been p re p a re d by I EC th e fi rs t e d i ti o n te c h n i ca l co m m i tte e 1 0: E l e c tro n i c d i s p l a y d e vi c e s Th i s s e co n d e d i ti o n ca n ce l s an d re p l a ce s pu bl i sh ed in 201 Th is e d i ti o n co n s ti tu te s a te c h n i c a l re vi s i o n T h i s e d i ti o n i n c l u d e s th e fo l l o wi n g s i g n i fi c a n t te c h n i c a l c h a n g e s wi th re s p e ct to th e p re vi o u s e d i ti o n : a) C o n te n ts o f a re ch a n g e d b) C o n te n ts a n d i te m s o f An n e x C a re ch a n g e d c) An n e x B i s a d d e d International Electrotechnical Commission – – I E C 234 -6-2 : 20 © I E C 201 T h e te xt o f th i s s ta n d a rd i s b a s e d o n th e fo l l o wi n g d o cu m e n ts : FDI S Re p o rt o n v o t i n g 1 /6 /F D I S 1 / / RVD F u l l i n fo rm a ti o n o n th e vo ti n g fo r th e a p p ro va l o f th i s s ta n d a rd c a n b e fo u n d i n th e re p o rt o n vo ti n g i n d i c a te d i n th e a b o ve ta b l e A l i st of al l p a rts o f th e I EC 62341 emitting diode (OLED) displays, s e ri e s , pu blished u n d e r th e g e n e l Organic light ti tl e ca n b e fo u n d o n th e I E C we b s i te T h i s p u b l i ca ti o n h a s b e e n d fte d i n a cc o rd a n c e wi th th e I S O /I E C D i re cti ve s , P a rt T h e c o m m i tte e h a s d e ci d e d th a t th e c o n te n ts o f th i s p u b l i ca ti o n wi l l re m a i n u n c h a n g e d u n ti l th e s ta b i l i t y d a te i n d i ca te d on th e I EC we b s i te u n d er " h ttp : //we b s to re i e c c h " in th e d a ta re l a te d to th e s p e c i fi c p u b l i c a ti o n At th i s d a te , th e p u b l i ca ti o n wi l l b e • re co n fi rm e d , • wi th d wn , • re p l a ce d b y a re vi s e d e d i ti o n , o r • am en d ed A b i l i n g u a l ve rs i o n o f th i s p u b l i c a ti o n m a y b e i s s u e d a t a l a te r d a te I M P O RT AN T th a t it – u n d e rs t a n d i n g c o l o u r p ri n t e r International Electrotechnical Commission Th e co n ta i n s of ' co l ou r c o l o u rs i ts i n si de' wh i ch c o n te n ts l og o a re U s e rs on th e cover c o n s i d e re d sh ou l d p ag e to t h e re fo re of th i s be p ri n t p u b l i cati on u s e fu l th i s fo r i n d i c a te s th e d ocu m e n t c o rre c t u si n g a I EC 62341 -6-2: 201 © I EC 201 – – O RG AN I C LI G H T E M I TTI N G D I O D E (O L E D ) D I S P L AYS – P a rt -2 : M e a s u ri n g m e th o d s o f vi s u a l q u a l i t y a n d a m b i e n t p e rfo rm a n ce S co p e Th i s p a rt of I EC 62 34 s p e c i fi e s th e s ta n d a rd m e a s u re m e n t c o n d i ti o n s and m e a s u re m e n t m e th o d s fo r d e te rm i n i n g th e vi s u a l q u a l i t y a n d a m b i e n t p e rfo rm a n c e o f o rg a n i c l i g h t e m i tti n g d i od e (OLE D ) d i spl a y m od u l es a n d pan els T h i s d o c u m e n t m a i n l y a p p l i e s to co l o u r d i s p l a y m od u l es N o rm a ti ve re fe re n ce s T h e fo l l o wi n g d o c u m e n ts , i n wh o l e o r i n p a rt, a re n o rm a ti ve l y re fe re n ce d i n th i s d o c u m e n t a n d a re i n d i s p e n s a b l e fo r i ts a p p l i ca ti o n F o r d a te d re fe re n ce s , o n l y th e e d i ti o n c i te d a p p l i e s F o r u n d a te d re fe re n ce s , th e l a te s t e d i ti o n of th e re fe re n ce d d ocu m en t ( i n cl u d i n g an y a m e n d m e n ts ) a p p l i e s I EC 60050 (al l International p a rts ) , Electrotechnical Vocabulary ( a va i l a b l e at www e l e c tro p e d i a o rg ) Multimedia systems and equipment – Colour measurement and management – Part 2-1 : Colour management – Default RGB colour space - sRGB I EC 61 966-2-1 , I E C 623 -1 -2 , Organic light emitting diode (OLED) displays – Part -2: Terminology and letter symbols CI E 5: 00 4, Colorimetry Te rm s , d e fi n i ti o n s a n d a b b re vi a ti o n s T e rm s a n d d e fi n i t i o n s F o r th e p u rp o s e s o f th i s d o c u m e n t, th e te rm s and d e fi n i ti o n s g i ve n in I EC 60050-845 and I E C - - , a s we l l a s th e fo l l o wi n g a p p l y vi s u a l i n s p e cti o n m ean s fo r c h e cki n g i m ag e q u a l i ty by human vi s u a l o b s e rva ti o n fo r c l a s s i fi c a ti o n an d co m p a ri s o n a g a i n s t l i m i t s a m p l e cri te ri a s u b p i xe l d e fe cts a l l o r p a rt o f a s i n g l e s u b p i xe l , th e m i n i m u m co l o u r e l e m e n t, wh i c h i s vi s i b l y b ri g h te r o r d a rke r th a n s u rro u n d i n g s u b p i xe l s o f th e s a m e c o l o u r N o te t o e n t ry: F u rt h e r c l a s s i fi c a ti o n s o f s u b p i xe l d e fe c ts a re m a d e d e p e n d i n g o n th e n u m b e r a n d c o n fi g u ti o n o f m u l ti p l e s u b p i xe l d e fe c t s wi t h i n a re g i o n o f t h e d i s p l a y N o te t o e n t ry: International Electrotechnical Commission F o r m o n o c h ro m a ti c d i s p l a ys , th e t e rm “ d o t d e fe c t ” m a y b e u s e d –8– IEC 62341 -6-2:201 © IEC 201 defects in subpixels or dots which are visibly brighter than surrounding subpixels of the same colour when addressed with a uniform dark or grey background b ri g h t s u b p i x e l d e fe c t s defects in subpixels or dots which are visibly darker than surrounding subpixels of the same colour when addressed with a uniform bright background (e.g > 50 % full screen luminance) d a rk s u b p i x e l d e fe c t s defects in subpixels or dots with part of the emission area obscured such that a visible difference in brightness is observed in comparison with neighboring subpixels of the same colour p a rt i a l s u b p i xe l d e fe c t s subpixel or dot defects gathered in a specified area or within a specified distance c l u s t e re d s u b p i xe l d e fe c t s Note to entry: This is also known as “close subpixel defect” u n s tab l e s u b p i xe l subpixel or dot that changes luminance in an uncontrollable way reduction in the active emissive area of one or more subpixels (or dots) over time p i xe l s h ri n k a g e pan el e d g e s h ri n k a g e reduction in the active emissive area from the edges of the display area over time defects in a vertical or horizontal bright or dark line parallel to a row or column observed against a dark or bright background, respectively l i n e d e fe c t s 1 b ri g h t l i n e d e fe c t s defects in lines appearing bright when displayed with a uniform dark or grey pattern d a rk l i n e d e fe c t s defects in lines appearing dark when displayed with a uniform bright or grey pattern visible defects in regions in which the luminance and colour non-uniformity generally vary more gradually than subpixel level defects m u Note to entry: For classification, the maximum dimension should be less than one fourth of the display width or height variation in luminance consisting of one or more lines extending horizontally or vertically across all or a portion of the display l i n e m u International Electrotechnical Commission – 34 – IEC 62341 -6-2:201 © IEC 201 An n e x A (informative) M e a s u ri n g re l a ti ve p h o tol u m i n e s ce n ce tri b u ti on fro m d i s p l a ys A P u rp o s e The purpose of this method is to estimate the relative amount of PL emitted by a display under illumination relative to the reflected component A M e as u ri n g co n d i ti o n s ) Apparatus: A spectroradiometer that can measure spectral radiance over at least the 380 nm to 780 nm wavelength range, and a spectrally tunable unpolarized light source capable of producing light from at least 380 nm to 780 nm shall be used The tunable light source and detector shall be stable to < % over the time period of the measurement The spectral bandwidth of the detector and light source shall not exceed nm The spectral bandwidth of the spectroradiometer shall be an integer multiple of the sampling interval 2) Illuminance condition: The standard ambient illumination conditions for clear sky daylight shall be used The PL is assumed to be linear over the illuminance range of interest Therefore, any illumination levels that provide a strong signal may be used However, the results are only valid for the spectral distribution used in this measurement 3) Except for the defined illumination sources, the measurements will be performed in a dark room with the display in the OFF or black state A M e as u ri n g th e b i -s p e ctral p h o to l u m i n e s c e n ce o f th e d i s p l a y ) Place the display to be measured in the hemispherical diffuse or directional illumination geometry of interest (as defined in Clause 5) For simulating the effect of PL under standard daylight illumination, the directional source geometry is recommended as an initial test case 2) The spectroradiometer shall be focused on the display surface and centred on the active area 3) The tunable light source shall produce uniform illumination (within ± %) over the measurement field area of the display 4) The spectroradiometer shall measure the spectral radiance L(λ, λ ex) for monochromatic source illumination E0 (λ ex) at each incident wavelength λ ex 5) Replace the display with a white diffuse reflection standard with known spectral reflectance factor R std (λ ex) for the illumination/detection geometry used The reflection standard used shall not exhibit any PL over the wavelength range of interest 6) The spectroradiometer shall measure the reflected spectral radiance S(λ, λ ex) for monochromatic source illumination E0 (λ ex) at each wavelength λ ex A D e te rm i n i n g th e re l ati ve P L co n tri b u ti o n fro m th e d i s p l a y ) The spectral radiance L E ( λ, λ ex) of the display spectra under the desired reference spectral irradiance E( λ ex) at the same illumination/detection geometry can be calculated from the measured spectral radiance L(λ, λ ex) at each illumination wavelength λ ex using the relation below: International Electrotechnical Commission I EC 62341 -6-2: 201 © I EC 201 – 35 – L (λ , λ E ex ) = L (λ , λ ex ) E ( λ ) R (λ πS ( λ , λ ) ex std ex ) ( A ) ex An e xa m p l e of th e th re e - d i m e n s i o n a l re p re s e n ta ti o n of th e s ca l e d b i - s p e c tra l d isplay re s p o n s e i s g i ve n i n F i g u re A R e fl e c t i o n P h o to l u m i n e s ce n ce 800 –3 –3 750 ( s p e c t l d i a n c e ) –2 –3 700 (nm) –4 –4 –5 E m i s s i o n wa ve l e n g th –5 –6 Log –7 –6 –8 –9 –7 800 700 600 800 –8 700 500 –4 650 –5 600 –6 550 500 –7 450 –8 400 600 400 500 300 –9 400 –9 350 300 350 400 450 500 550 600 650 E xc i t a t i o n w a v e l e n g t h 700 750 800 (n m) IEC F i g u re A – S c a l e d b i -s p e ctra l p h o to l u m i n e s c e n c e re s p o n s e fro m a d i s p l a y T h e p u re re fl e c ti o n s i g n a l d o e s n o t e xh i b i t a wa v e l e n g th s h i ft, a n d i s re p re s e n te d b y th e re d d i ag on al peak i n λ e x, l o n g e r th a n th e F i g u re PL A S i n ce co n tri b u ti o n s th e a re PL wi l l co n fi n e d a l wa ys to th e be e m i tte d a t wa ve l e n g th s u pper d i ag on al e l e m e n ts in F i g u re A 2) T h e re l a ti ve co n tri b u ti o n o f th e P L c a n b e e s ti m a te d b y d e c o m p o s i n g th e d a ta i n F i g u re A i n to th e P L c o m p o n e n t ( th e u p p e r d i a g o n a l ) a n d th e re fl e c ti o n c o m p o n e n t ( th e p e a k a l o n g th e d i a g o n a l ) a s s h o wn i n F i g u re A T h e b a ckg ro u n d n o i s e s h a l l b e s u b tra c te d to i m p ro ve th e a cc u c y o f th e a n a l ys i s P L c o n t ri b u t i o n R e fl e c t i o n c o n t ri b u t i o n 700 700 650 600 + 550 500 450 400 650 600 550 500 450 400 350 350 (nm) 750 E m i s s i o n wa ve l e n g th 750 (nm) 800 E m i s s i o n wa ve l e n g th 800 350 400 450 500 550 600 650 E xc i t a t i o n w a v e l e n g t h 700 750 800 350 (n m) 400 450 500 550 600 650 E xc i t a t i o n w a v e l e n g t h 700 750 800 (n m) IEC F i g u re A – D e c o m p o s e d b i -s p e ctra l p h o to l u m i n e s ce n c e re s p o n s e fro m a d i s p l a y 3) I f th e d i s p l a y wa s i l l u m i n a te d wi th th e e n ti re i l l u m i n a ti o n s p e c tru m E( λ d i a n ce can c o n tri b u ti o n fo r th e PL and re fl e cte d i n te g ti n g o ve r th e ro w e l e m e n ts i n F i g u re A : International Electrotechnical Commission c o m p o n e n ts ex ) a t o n c e , th e n t h e be ca l c u l a te d by – 36 – I E C 6234 -6-2 : 20 © I E C 20 LPL ( λ ) = ∑ LPL, E ( λ , λ ex ) fo r λ > λ e x + ∆ λ /2 ( A ) λex an d LRefl ( λ ) = ∑ LRefl , E ( λ , λ ex ) fo r λ > P I EC 201 – 41 – = G e t G a m u t C o r n e rs ( ' s R G B ' ) D e fa u l t P © D65 wh i te used = 0 0, 41 0, 21 0, 01 0, 770 0, 927 0, 38 0, 357 0, 71 0, 1 0, 538 0, 787 , 069 0, 80 0, 072 0, 950 0, 592 0, 284 0, 969 0, 950 , 000 , 089 wh e re th e F i g u re C : d a ta Y Y Y Y Y Y Y Y X X X X X X X X K C I E L AB co l ou r = 8, 201 International Electrotechnical Commission × e x e m p l i fi e d W g am u t C I E L a b V o l _s u b d ( an s as M W Th e c o o rd i n a te s B M W tri s ti m u l u s C B M fo l l o w i n g G C B th e Y G C to R Y G c o r re s p o n d s K R Y m a t ri x Z Z Z Z Z Z Z Z K R >> P ) vo l u m e is o b ta i n e d by e xe cu ti n g th e fo l l o w i n g co m m a n d : by – 42 – I E C 6234 -6-2 : 20 © I E C 20 CI E L abVo l _s ub d m func t i o n [ v] = C I E L ab Vo l _s ub d( P ) % E ac h r o w o f P c o nt ns XYZ t ri - s t i mu l us val ue s o f gamu t c o rn e r po i nt s % T he D ga mut i s de fi ne d as t he c o nve x hul l o f t he s e po i nt s i n XYZ s pa ce % T he s u rfa ce i s re c ur s i ve l y s ub di vi de d wn t o a t hr e s ho l d s c al e i n CI E LAB % and t he vo l u me made by e ach s u rfa ce t i l e t o a ce nt r al po i nt i s s umme d t hre s h= ; % C I E L ab s u bdi vi s i o n t hr e s ho l d % Ge t t he hul l de fi n e d b y t he po i nt s T =co nvhul l n( P ) ; % Ge t t he whi t e p o i n t ( t ake n as t he p r i ma ry wi t h t he max i mu m Y ) [ W, i ] =max( P( : , ) ) ; W=P( i , : ) ; % No r mal i s e t he gamu t t o t he whi t e po i nt Pn=P / ( re p mat ( W, s i z e ( P, ) , ) ) ; % ge t t he mi d- po i nt Pm=me an ( Pn ) ; % add- o n t he C I E L ab po i nt s Pn=[ Pn, XY Z L ab( Pn) ] ; Pm=[ Pm, XY Z L ab( Pm) ] ; % cal cul at e an d s um t he La b vo l u me o f e ac h s urf ace t i l e t o t he mi d- p o i n t v=0 ; fo r n=1 : s i z e ( T , ) , v=v+ S u bDL abVo l ( Pn ( T ( n , : ) , : ) , Pm, t hre s h) ; e nd % % s ub- fun ct i o ns % XY Z L ab co n ve r t s XYZ va l ue s a rra nge d i n co l u mns t o L* a* b* fun c t i o n [ t ] = XYZ Lab ( t ) i =( t >0 0 8 ) ; t ( i ) =t ( i ) ^ ( / ) ; t ( ~ i ) =7 * t ( ~ i ) + / 1 ; t =[ 1 * t ( : , ) - , 0 * ( t ( : , ) - t ( : , ) ) , 0 * ( t ( : , ) - t ( : , ) ) ] ; e nd % Re c urs i ve fu nct i o n t o de vi de u p t he s ur fa ce t i l e t he n re t urn t he vo l u me fun ct i o n [ v ] = S ubDLab Vo l ( vp , c , t h ) % Ge t t he ma x e xt e nt o f e ac h e dge ( qui c ke r t han l e n gt h c al cu l at i o n ) m= max ( ab s ( vp - ci rc s hi ft ( vp, ) ) , [ ] , ) ; % C o un t ho w ma ny e dge s have e xt e n t s l ar ge r t han t he t hre s ho l d s = s um( m> t h) ; i f ( s ==0 ) , % n o e dge s l a rge r: re t ur n t he vo l u me v=ab s ( de t ( vp( : , : ) - re p mat ( c ( , : ) , , ) ) / ) ; e l s e i f ( s ==3 ) , % al l e dge s l arge r: di vi de t i l e i n fo ur % ge t e dge mi d- po i nt s i p =( vp( : , : ) + c i rc s hi f t ( vp( : , : ) , ) ) / ; % cal cul at e CI E La b po i nt s o f t he mi d- p o i nt s i p =[ i p , XY Z La b( i p) ] ; International Electrotechnical Commission I EC 62341 -6-2: 201 © I EC 201 – 43 – % and ca l l re c urs i ve l y fo r e a c h s ub - t i l e v=S u bDLab Vo l ( [ vp ( , : ) ; i p ( : , : ) ] , c , t h) ; v=v+ S u bDL abVo l ( [ vp( , : ) ; i p( : , : ) ] , c, t h) ; v=v+ S u b DL ab Vo l ( [ vp( , : ) ; i p( : : , : ) ] , c, t h) ; v=v+ S u b DL ab Vo l ( i p , c , t h) ; e l s e % o n e o r t wo e dge s l ar ge r : s pl i t t he t i l e o n t he l a rge s t e dge % s hi ft t he o r de r s o - has t he l a rge s t e xt e nt [ m, i ] = max( m) ; vp=c i r cs hi ft ( vp, - i ) ; % cal cu l at e t he mi d- po i nt o f - an d t he CI E Lab p o i n t i p=( vp ( , : ) + vp ( , : ) ) / ; i p=[ i p , XYZ La b ( i p ) ] ; e nd e nd International Electrotechnical Commission end % and c al l re c urs i ve l y fo r t he t wo s ub - t i l e s v=S u bDLab Vo l ( [ vp ( [ ] , : ) ; i p] , c, t h) ; v=v+ S u b DL ab Vo l ( [ vp( : , : ) ; i p] , c, t h) ; – 44 – I E C 6234 -6-2 : 20 © I E C 20 Ge t Gamu t Co rne rs m func t i o n [ P ] = Ge t Gamut C o r ne r s ( P , wh) % GE T PRI M re t urn s a s e t o f c o l o ur co r ne r p o i nt s b as e d o n a s t an dard ga mut % i np ut s t r i ng mu s t c o n t n o ne o f: % ' s RGB ' , ' Re c7 ' , ' E BU' , ' NT S C' % o pt i o na l l y o n e o f % ' D5 ' , ' D5 ' , ' D6 ' , ' D7 ' , ' I l l A' , ' I l l E ' i f i s c har ( P) i f na rgi n< wh=P ; end i f s t rfi nd( P, ' s RGB' ) | | s t rfi nd( P, ' Re c ' ) p ri m=[ , 3 ; , ; , ] ; e l s e i f s t rf i n d( P, ' E B U' ) p ri m=[ , 3 ; , ; , ] ; e l s e i f s t rf i n d( P, ' NT S C ' ) p ri m=[ , 3 ; , ; , ] ; else e rro r( ' no n- va l i d co l o u r p ri mar y s p e c i fi c at i o n' ) ; end P=p ri m; e nd i f i s c har ( wh) i f s t rfi nd( wh, ' D5 ' ) wh=[ , ] ; e l s e i f s t rf i n d( wh, ' D5 ' ) wh=[ 3 , ] ; e l s e i f s t rf i n d( wh, ' D6 ' ) wh=[ , ] ; e l s e i f s t rf i n d( wh, ' D7 ' ) wh=[ 9 , ] ; International Electrotechnical Commission I EC 62341 -6-2: 201 © I EC 201 e nd – 45 – e l s e i f s t r fi n d( wh, ' I l l A' ) wh=[ 4 7 , ] ; e l s e i f s t rf i n d( wh, ' I l l E ' ) wh=[ 3 3 , 3 3 ] ; else wh=[ , ] ; di s p l ay( ' De fa ul t D6 whi t e u s e d' ) ; end e nd wh= [ wh, - s u m( wh) ] / wh( ) ; P=[ P, - s um( P, ) ] ; P=P * r e pmat ( ( wh/ P ) ' , , ) ; % P= [ KRYGC BMW] ' P=[ 0 ; P( , : ) ; s um( P ( : , : ) ) ; P( , : ) ; s um( P ( : , : ) ) ; P( , : ) ; s um( P( [ ] , : ) ) ; s u m( P ) ] ; International Electrotechnical Commission – 46 – I E C 6234 -6-2 : 20 © I E C 20 B i b l i o g p h y [1 ] I S O /T C /S C N 7 D T R/T R - : , Ergonomics of human-system interaction – Part 31 0: Pixel defects – Visibility, aesthetics, and ergonomics (draft standard) of pixel defects [2 ] E F Ke l l e y, M L i n d fo rs , a n d J P e n c ze k, [3 ] AN S I /I E S N A R P - - , Am e ri ca n N a ti o n a l S ta n d a rd P cti c e fo r O ffi c e L i g h ti n g , Display daylight ambient contrast measurement methods and daylight readability, J Soc Information Display, V 4, p 01 9-1 030 (2006) Illuminating Engineering Society of North A merica (IESNA ) , 2004 [4 ] U s i n g m o d e l i n AS T M G , “ Standard Table for Reference Solar Spectral Distributions: Direct and Diffuse on 20º Tilted and Vertical Surfaces”, 2008 [5 ] T h e I E S N A L i g h ti n g H a n d b o o k: Re fe re n ce a n d Ap p l i c a ti o n , th E d ( 0 ) [6 ] C I E P u b l i c a ti o n N o 4 , [7 ] E F Ke l l e y, [8 ] B P D e h m l o w a n d K A B ro s ta d , Reflection-mode diffraction and matrix displays, Proc Of the SPIE, Vol 3363 (Cockpit Displays V) , pp 21 7-224 (1 998) [9 ] I n te rn a ti o n a l C o u n c i l o f O p h th a l m o l o g y, [1 ] I n te rn a ti o n a l C o u n c i l o n O p h th a l m o l o g y, A bsolute Methods for Reflection Measurement, Commission Internationale de l’Eclairage (International Commission on Illumination) , 979 reprinted 990 For example of sampling sphere, see the Sharp-Little method Diffuse reflectance and ambient contrast measurements using a sampling sphere, Proc Third A mericas Display Engineering and A pplications Conf (A DEA C 2006) , Soc Information Display, A tlanta, GA , USA , pp -5, Oct 24-26, 2006 I E C 0050-845: 987, I EC 60081 , “Visual A cuity Measurement Standard” (1 984) “Visual Standards” (2002) International Electrotechnical Vocabulary – Part 845: Lighting Double-capped fluorescent lamps – Performance specifications Organic light emitting diode (OLED) displays – Part 6-1 : Measuring methods of optical and electro-optical parameters I EC 62341 -6-1 , _ International Electrotechnical Commission International Electrotechnical Commission INTERNATIONAL ELECTROTECHNICAL COMMISSION 3, rue de Varembé PO Box 31 CH-1 21 Geneva 20 Switzerland Tel: + 41 22 91 02 1 Fax: + 41 22 91 03 00 info@iec.ch www.iec.ch International Electrotechnical Commission