Philips 190B5CB/00, Руководство по обслуживанию

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Pixel Defect Policy
P h ili ps' F l a t P an el M o n ito rs Pixel Defect Policy
P h ili ps s t r i v e s to d eli v e r t h e h i gh e s t qua lity pr o du ct s. W e us e s o m e
of t h e i ndus t r y 's m o s t advan ce d manu f a ct ur i ng pr oce ss e s and
pra ctice s t r i ng e n t qua lity co n t r ol . H o w e v e r, p ixel o r sub p ixel d efect s
o n t h e TFT LC D pan el s us e d i n fl a t pan el m o n ito rs ar e s o m eti m e s
unav oi dab le . N o manu f a ct ur e r c an guaran tee t ha t a ll pan el s w ill b e
f r ee f r o m p ixel d efect s, bu t P h ili ps guaran tee s t ha t an y m o n ito r w it h
an una cce p t ab le numb e r of d efect s w ill b e r e pa i r e d o r r e p l a ce d
und e r warran ty . Th i s n otice ex p l a i ns t h e d iffe r e n t ty p e s of p ixel
d efect s and d efi n e s a cce p t ab le d efect le v el s fo r e a c h ty p e . In o rd e r
to qua lify fo r r e pa i r o r r e p l a ce m e n t und e r warran ty , t h e numb e r of
p ixel d efect s o n a TFT LC D pan el mus t excee d t h e s e a cce p t ab le
le v el s. F o r ex amp le , n o m o r e t han 0.0004% of t h e sub p ixel s o n a
15" XGA m o n ito r ma y b e d efecti v e . Fur t h e rm o r e , P h ili ps s et s e v e n
h i gh e r qua lity s t andards fo r ce r t a i n ty p e s o r co mb i na tio ns of p ixel
d efect s t ha t ar e m o r e n otice ab le t han ot h e rs. Th i s p olicy i s va li d
w o r l dw i d e .
Pixel s and Sub p ixel s
A p ixel , o r p ict ur e ele m e n t , i s co mp o s e d of t hr ee sub p ixel s i n t h e
pr i mar y colo rs of r e d, gr ee n and b l u e . Man y p ixel s to g et h e r fo rm an
i mag e . Wh e n a ll sub p ixel s of a p ixel ar e lit , t h e t hr ee colo r e d sub
p ixel s to g et h e r app e ar as a s i ng le wh ite p ixel . Wh e n a ll ar e dark, t h e
t hr ee colo r e d sub p ixel s to g et h e r app e ar as a s i ng le b l a c k p ixel .
O t h e r co mb i na tio ns of lit and dark sub p ixel s app e ar as s i ng le p ixel s
of ot h e r colo rs.
T y p e s of Pixel Defect s
Pixel and sub p ixel d efect s app e ar o n t h e s c r ee n i n d iffe r e n t wa y s.
Th e r e ar e t w o c a te g o r ie s of p ixel d efect s and s e v e ra l ty p e s of sub
p ixel d efect s w it h i n e a c h c a te g o r y .
Br i gh t Dot Defect s
Br i gh t d ot d efect s app e ar as p ixel s o r sub
p ixel s t ha t ar e a l wa y s lit o r ' o n'. Th e s e ar e t h e ty p e s of br i gh t d ot
d efect s:
On e lit r e d, gr ee n o r
b l u e sub p ixel
Tw o adja ce n t lit sub
p ixel s:
- R e d + B l u e =
P urp le
- R e d + Gr ee n =
Y ello w
- Gr ee n + B l u e =
C y an (L i gh t B l u e )
Thr ee adja ce n t lit sub
p ixel s ( o n e wh ite
p ixel )
B l a c k Dot Defect s B l a c k d ot d efect s app e ar as p ixel s o r sub p ixel s
t ha t ar e a l wa y s dark o r ' off '. Th e s e ar e t h e ty p e s of b l a c k d ot d efect s:
On e dark sub p ixel Tw o o r t hr ee adja ce n t dark sub p ixel s
P r oxi m ity of Pixel Defect s
B ec aus e p ixel and sub p ixel s d efect s of t h e sam e ty p e t ha t ar e n e ar
to o n e an ot h e r ma y b e m o r e n otice ab le , P h ili ps a l s o sp ecifie s
tole ran ce s fo r t h e pr oxi m ity of p ixel d efect s.
Pixel Defect T ole ran ce s
In o rd e r to qua lify fo r r e pa i r o r r e p l a ce m e n t du e to p ixel d efect s
dur i ng t h e warran ty p e r io d, a TFT LC D pan el i n a P h ili ps fl a t pan el
m o n ito r mus t hav e p ixel o r sub p ixel d efect s excee d i ng t h e
tole ran ce s li s te d i n t h e follo w i ng t ab le s.
BRIGHT D OT D EFECTS
ACCE P TABLE
LEVEL
1 lit subp ixel 3 o r fe w e r
2 adja ce n t lit subp ixel s 1 o r fe w e r
3 adja ce n t lit subp ixel s ( o n e wh ite p ixel ) 0
Di s t an ce b et w ee n t w o br i gh t d ot d efect s* 25 mm o r m o r e
T ot a l br i gh t d ot d efect s of a ll ty p e s 3 o r fe w e r
Note:
* 1 or 2 adjacent sub pixel defects = 1 dot defect
All Philips monitors are ISO13406-2 Compliant
BLACK D OT D EFECTS
ACCE P TABLE
LEVEL
1 dark subp ixel 5 o r fe w e r
2 adja ce n t dark subp ixel s 2 o r fe w e r
3 adja ce n t dark subp ixel s 0
Di s t an ce b et w ee n t w o b l a c k d ot d efect s* 15 mm o r m o r e
T ot a l b l a c k d ot d efect s of a ll ty p e s 5 o r fe w e r
TOTAL D OT D EFECTS
ACCE P TABLE
LEVEL
T ot a l br i gh t o r b l a c k d ot d efect s of a ll
ty p e s
5 o r fe w e r