Iec 61747 20 3 2016

IEC 61 747 20 3 Edition 1 0 201 6 02 INTERNATIONAL STANDARD Liquid crystal display devices – Part 20 3 Visual inspection – Active matrix colour l iquid crystal display modules IE C 6 1 7 4 7 2 0 3 2 0[.]

IEC 61747- 20- 3

Edit io 1.0 2 16-0

Liquid cry stal display dev ices –

Part 20- 3: Visual inspect ion – Act iv e mat rix colour l quid cry st al display modules

®

c olour

inside

THIS PUBLICATION IS COPYRIGHT PROT CTED

Copyr ight © 2 16 IEC, Ge e a, Switzer la d

Al r i hts r es r ve Unle s oth r wis s e ifi d, n p r t of this p blc tio ma b r epr od c d or uti z d in a y for m

or b a y me n ,ele tr onic or me h nic l in lu in p oto o yin a d microfim, with ut p r mis io in wr itin fr om

eith r IEC or IEC's memb r Natio al Commite in th c u tr y of th r eq e ter If y u h v a y q e tio s a o t IEC

c p r i ht or h v a e q iry a o t o tainin a ditio al r i hts to this p blc tio , ple s c nta t th a dr es b low or

y ur lo al IEC memb r Natio al Commite for fur th r infor matio

Ab ut h IEC

Th Inter natio al Ele tr ote h ic l Commis io (IEC) is th le din glo al or ga iz tio th t pr ep r es a d p bls e

Intern tio al Sta d r ds for al ele tr i al ele tr onic a d relate te h olo ie

A bout IEC publc tion

Th te h ic l c nte t of IEC p blc tio s is k pt u d r c n ta t r eview b th IEC Ple s ma e s r e th t y u h v th

late t e itio , a c r r ig n a or a ame dme t mig t h v b e p bls e

IEC Catalo u - webstore.e c /cat alo u

Th st an -alo e a plc at io for c on ult in t he e t ire

biblo ra hic al informat io o IEC Int ern t io al St an ard ,

Te h ic al Sp cific at io s, Tec hnic al R ep rt s a d ot her

d c ume t s A v aia le for PC, Ma OS, A ndroid Ta let s a d

iPa

IEC publc t ion s arc - w w w.e c /s archpub

Th a v anc ed s arc h e a le t o fin IEC p blc t io s b a

v riety of c riteria (efere c n mb r, text, t ec hnic l

c mmit t ee,…) It als giv es informat io o projec t s, re lac ed

a d wit hdraw np blc at io s

St ay u t o d t e o al n w IEC p blc t io s Ju t Pu ls e

d t ais al n w p blc t io s rele s d A v aia le o ln a d

als o c a mo t h b emai

Ele tro edia - www.ele tro edia.org

Th world's le din o ln dic t io ary of elec t ro ic a d

elec t ric l t erms c ont ainin 2 0 0 t erms a d d finit io s in

En ls a d Fre c , wit h e uiv le t t erms in 15 a dit io al

la g a e A ls k nown a t he Int ern t io al Ele t rot ec hnic l

V oc ab lary (IEV ) o ln

IEC Glos ar y - st d.e c /glos ary

6 0 0 elec t rote h ic l t ermin lo y e t rie in En ls a d

Fre c ex t rac t ed fom t he Terms a d Definit io s cla s of

IEC p blc t io s is u d sin e 2 0 Some e trie h v b e

c lec t ed fom e rler p blc at io s of IEC TC 3 , 7 , 8 a d

CIS R

IEC Cu t omer Servic Ce tre - webst ore.e c /cs

If y ou wis t o giv u your fe d ac k o t his p blc t io or

n e furt her a sist an e,ple s c ont ac t t he Cu t omer Servic

Ce t re: c sc@ie c h

IEC 61 747- 20- 3

Edit io 1.0 2 16-0

Liquid cry stal display dev ices –

Part 20- 3: Visual inspect ion – A ct iv e mat rix colour l quid cry stal display modules

INT R NATIONA L

ELECTROT C NICAL

COMMIS ION

®

c olour

inside

CONTENTS

FOREWORD 3

INTRODUCTION 5

1 Sco e

6 2 Normative ref eren es 6

3 Terms, def i ition an a breviation 6

3.1 General 6

3.3 Ab reviation 1

4 Vis al in p ction method an criteria 1

4.1 Stan ard in p ction con ition 1

4.1.1 Ambient con ition 11 4.1.2 Vis al in p ction con ition 12 4.1.3 Electrical drivin con ition 12 4.2 Stan ard in p ction method 12 4.2.1 Setup of in p ction eq ipment an l q id cry tal display mod les 12 4.2.2 In p ctor an l mit sample f or vis al in p ction 12 4.2.3 In p ction an record of res lt 12 4.3 Criteria 12 4.3.1 Brig t s b ixel def ects 12 4.3.2 Dark s b ixel defects 12 4.3.3 Intermediate s b ixel defects 13 4.3.4 Clu ter s b ixel def ects 13 4.3.5 Brig t l ne def ects 13 4.3.6 Dark lne defects 13 4.3.7 Scratc an dent defects 13 4.3.8 F reig material an bub le def ects 13 4.3.9 Lig t le kage defects 14 Bibl ogra h 15 Fig re 1 – Clas ifi ation of defects by vis al in p ction 7

Fig re 2 – Examples of brig t s b ixel an adjacent s b ixel def ects in case of an RGB primary colour display 8

Fig re 3 – Examples of dark s b ixel an adjacent s b ixel def ects in case of RGB primary colour display 9

Fig re 4 – Examples of minimum distan e b twe n s b ixel defects 10 Fig re 5 – Example of l g t le kage b twe n the to case an outer blac matrix 1

Fig re 6 – Sha e of s ratc an dent defects 13

Fig re 7 – Sha e of foreig material an bub le defects 14

Ta le 1 – Criteria f or s ratc an dent defects 13

Ta le 2 – Criteria f or foreig material an bub le defects 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION

Part 20-3: Visual inspection – Active matrix colour

l quid crystal display modules

1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio c mprisin

al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote

intern tio al c -o eratio o al q e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic f i ld To

this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cif i atio s,

Te h ic l Re orts, Pu lcly Av ia le Sp cific tio s (PAS) a d Guid s (h re f ter refere to a “IEC

Pu lc tio (s)”) Th ir pre aratio is e tru te to te h ic l c mmite s; a y IEC Natio al Commite intere te

in th s bje t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n

n-g v rnme tal org niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely

with th Intern tio al Org niz tio for Sta d rdiz tio (ISO) in a c rd n e with c n itio s d termin d b

a re me t b twe n th two org niz tio s

2) Th formal d cisio s or a re me ts of IEC o te h ic l maters e pre s, a n arly a p s ible, a intern tio al

c n e s s of o inio o th rele a t s bje ts sin e e c te h ic l c mmite h s re re e tatio fom al

intere te IEC Natio al Commite s

3) IEC Pu lc tio s h v th form of re omme d tio s f or intern tio al u e a d are a c pte b IEC Natio al

Commite s in th t s n e Whie al re s n ble eforts are ma e to e s re th t th te h ic l c nte t of IEC

Pu lc tio s is a c rate, IEC c n ot b h ld re p n ible for th wa in whic th y are u e or f or a y

misinterpretatio b a y e d u er

4) In ord r to promote intern tio al u iformity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s

tra s are tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e

b twe n a y IEC Pu lc tio a d th c r e p n in n tio al or re io al p blc tio s al b cle rly in ic te in

th later

5) IEC its lf d e n t pro id a y ate tatio of c nformity In e e d nt c rtif i atio b die pro id c nformity

a s s me t s rvic s a d, in s me are s, a c s to IEC mark of c nformity IEC is n t re p n ible for a y

s rvic s c rie o t b in e e d nt c rtif i atio b die

6) Al u ers s o ld e s re th t th y h v th late t e itio of this p blc tio

7) No la i ty s al ata h to IEC or its dire tors, emplo e s, s rv nts or a e ts in lu in in ivid al e p rts a d

memb rs of its te h ic l c mmite s a d IEC Natio al Commite s for a y p rs n l injury, pro erty d ma e or

oth r d ma e of a y n ture wh ts e er, wh th r dire t or in ire t, or f or c sts (in lu in le al fe s) a d

e p n e arisin o t of th p blc tio , u e of, or rela c u o , this IEC Pu lc tio or a y oth r IEC

Pu lc tio s

8) Ate tio is drawn to th Normativ refere c s cite in this p blc tio Us of th refere c d p blc tio s is

in is e s ble for th c re t a plc tio of this p blc tio

9) Ate tio is drawn to th p s ibi ty th t s me of th eleme ts of this IEC Pu lc tio ma b th s bje t of

p te t rig ts IEC s al n t b h ld re p n ible f or id ntifyin a y or al s c p te t rig ts

International Stan ard IEC 617 7-2 -3 has b en pre ared by IEC tec nical commite 1 0:

Electronic display devices

This first edition can els an re laces the f irst edition of IEC 617 7-5-2 publs ed in 2 1

This edition con titutes a tec nical revision

This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou

edition:

a) doc ment n mb rin was c an ed to al g with the new n mb rin of IEC 617 7

The text of this stan ard is b sed on the fol owin doc ments:

Ful inf ormation on the votin f or the a proval of this stan ard can b f ou d in the re ort on

votin in icated in the a ove ta le

This publcation has b en draf ted in ac ordan e with the ISO/IEC Directives, Part 2

A l st of al p rts of the IEC 617 7 series, u der the general title Liq id cry tal dis la d evic s,

can b f ou d on the IEC we site

The commit e has decided that the contents of this publ cation wi remain u c an ed u ti

the sta i ty date in icated on the IEC we site u der "htp:/we store.iec.c " in the data

related to the sp cifi publ cation At this date, the publ cation wi b

• with rawn,

• re laced by a revised edition, or

A bi n ual version of this publ cation may b is ued at a later date

IMPORTANT – The 'colour in ide' logo on the cov r pa e of this publ c tion indic te

understa ding of its conte ts Us rs s ould theref ore print this doc me t using a

colour printer

This p rt of IEC 617 7 faci tates the vis al in p ction of the image defect of LCD mod les by

h man eyes s bjectively Vis al in p ction is p rf ormed at sp cif ied con ition an criteria

The o jective me s rement method of vis al image defects with an in trument wi b stu ied

an stan ardized

LIQUID CRYSTAL DISPLAY DEVICES –

Part 20-3: Visual inspection – Active matrix colour

l quid crystal display modules

This p rt of IEC 617 7 gives the detai s of the q al ty as es ment proced res an provides

general rules f or vis al in p ction of the active are of tran mis ive typ active matrix colour

l q id cry tal display mod les by the h man eye Furthermore, this stan ard in lu es defect

defi ition an the method f or vis al defect in p ction

NOT 1 Mura is e clu e fom this sta d rd b c u e it wa n t cle rly s e if i d at th time this sta d rd wa

d v lo e

NOT 2 Re trictio s o d f ect ty e , n mb r, a d siz s are s e ifie in th q alty c ntra t (c stomer

a c pta c s e if i atio a d in omin in p ctio s e ific tio )

The f olowin doc ments, in whole or in p rt, are normatively ref eren ed in this doc ment an

are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a pl es For

u dated ref eren es, the latest edition of the referen ed doc ment (in lu in an

IEC 617 7-10-2:2 14, Liq id cry tal d is la device – P art 10-2: En iro me tal, e d ura c

a d me h nical te t meth ds – Enviro me tal a d e d ura c

3 Terms, def initions and a bre iations

For the purp ses of this doc ment, the fol owin terms, defi ition an a breviation a ply

3.1.1

vis al inspe tion

method of c ec in display defects with the h man eye

Note 1 to e try: Th lmitatio o dis la d fe ts d p n s o s p ler a d c stomer Th refore a lmit s mple,

with wel-d f i e o s rv tio a do eratio al c n itio s, c n b u e a a refere c f or th d fe t le el

3.2

def ect

an o serva le a normal phenomenon a p arin in the active display are

EX MPLE Fig re 1 s ows a cla sific tio of d fe ts into two c te orie Th f irst c te ory is cla sif i d a

d fe ts with a cle r b u d ry, a d th s c n c te ory is cla sif i d a d fe ts with a u cle r b u d ry Th

later c te ory is n t y t wel d fin d, a d h n e dif fic lt to e alu te For this re s n, d f ects in th s c n

c te ory are e clu e fom this sta d rd

Figure 1 – Cla sif ic tion of def ects by vis al inspe tion

3.2.1

s bpix l d f ect

defect in the smal est pixel element when it a p ars in a state dif ferent from the inten ed one

EX MPLE Brig t s b ix ls a p ar o a d rk p tern, a d d rk s b ix ls a p ar o a brig t p tern

3.2.2

bright s bpix l d f ect

defect whic a p ars brig t on the s re n when a dark p t ern is displayed

EX MPLE Fig re 2 a) s ows a sin le s b ix l brig t d f ect of re , gre n, a d blu re p ctiv ly Fig re 2 b)

s ows two a ja e t brig t s b ix l d fe ts c n e te or dis o n cte in a h riz ntal a d/or v rtic l o e-pix l are

Fig re 2 c) s ows thre a ja e t brig t s b ix l d fe ts c n e te in thre h riz ntal a d/or v rtic l s b ix l

are s

Defe t

Cle r

b u d ry

Un le r

b u d ry

Foreig material

Bu ble

Mura

Sin le

Plural

Dark

Adja e t brig t

Adja e t d rk

smal

larg

Su pix l

d fe t

Scratc & d nt d fe t Lin d fe t

Brig t

Interme iate

IEC Point

d fe t

Figure 2 a) – E ample of on bright s b ixel defe t

Figure 2 b) – E ample of two adja e t bright s b ixel defe ts

Figure 2 c) – xample of thre adja e t bright s b ixel defe ts

Figure 2 – Ex mple of bright s b ix l a d a ja e t s b ix l def ects

in c s of a RGB primary colour displa

3.2.3

dark s bpix l d fe t

defect whic ap e rs dark on the s re n when a brig t p t ern is displayed

EX MPLE Fig re 3 a) s ows a sin le s b ix l d fe t of th d rk-ty e of re , gre n, blu , re p ctiv ly Fig re 3 b)

s ows two a ja e t d rk s b ix l d fe ts c n e te or dis o n cte in a h riz ntal a d/or v rtic l o e-pix l are

Fig re 3 c) s ows thre a ja e t d rk s b ix l d fe ts c n e te in thre h riz ntal a d/or v rtic ls b ix l are s

IEC

B

B G

G

R

G

B

G

B

B B

B R

B

B G

G

R

G

B

G

B

B B

B R

IEC

R

G

B

R

R

B R

G

B

R

R

B

IEC

R

R

Figure 3 a) – On dark s b ixel defe t

Figure 3 b) – Two adja e t dark s b ixel defe ts

Figure 3c) – Thre adja e t dark s b ixel defe ts

Figure 3 – Ex mple of dark s bpix l a d a ja e t s bpix l d f ects

in c s of RGB primary colour displa

3.2.4

interme iate s bpix l def ect

defect whic a p ars with an intermediate luminan e level on the s re n when a brig t or

dark p tern is displayed

3.2.5

cluster s bpix l def ect

at le st two s b ixel def ects in a sp cif ied are or within a sp cif ied distan e with man

s b ixel defects

EX MPLE Fig re 4 a) a d Fig re 4 b) s ow a e ample of brig t a d d rk clu ter s b ix l d fe ts in whic th

minimum dista c b twe n th d fe ts is s e if i d “d

h

” a d “d

v

” sta d for h riz ntal a d v rtic l minimum dista c

IEC

R

R

G

G R

R

G R

B

G R

R

G R

G

R

B B

R

R

G

G R

R

G R

B

G R

R

G R

G

R

B B

G B

R

G

G

R

R

R G B

G

R

R

G B

G

G B

R G B

R

R

B

R

B

G

IEC

IEC

G R

G R

Figure 4 a) – Bright s b ixel defe t to bright s b ixel defe t

Figure 4 b) – Dark s b ixel defe t to dark s b ixel defe t

Figure 4 – Ex mple of minimum dista c betwe n s bpix l def ects

3.2.6

l ne def ect

vertical or horizontal l ne whic a p ars in the brig t or dark state when a dark or brig t

p t ern is displayed

3.2.7

bright l n def ect

l ne that a p ars brig t on the s re n when a dark p t ern is displayed

3.2.8

dark l n defe t

l ne that a p ars dark on the s re n when a brig t p t ern is displayed

3.2.9

defect on to of or u derne th the p larizer or other o tical comp nents in the active display

are

3.2.10

s ratc d f ect

l g t (white) l ne that can b se n over a darker b c grou d an do s not vary in size

3.2.1

IEC

d

h

h

< minimum dista c

IEC

d

h

h

< minimum dista c