ERAE Electronics Industry EPT4220AP, Техническое и сервисное руководство

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S
ERVICE
62
6-5
Dot Defects
Zone A-Zone B-Zone Defect distance
Non-Ignition Dot
(Dark Defect)
Unstable Dot (Flickering)
▶
N
≤
2 [cells / each R,G,B
screen]
▶
N
≤
3 [cells / full-white
screen]
▶
N
＝
0 [adjacency of 2-cells
/full-white Screen]
▶
N
≤
4 [cells / each R,G,B
screen]
▶
N
≤
10 [cells / full-white
screen]
▶
N
≤
2 [adjacency of 2-cells
/full-white screen]
＝
0 [adjacency of 3-cells /
full-white screen]
Uncontrollable Dot
▶
N
＝
0 [cells / full-white
screen]
▶
N
≤
2 [cells / each R,G,B
screen]
▶
N
≤
4 [cells / full-white
screen]
Non-Extinguishing Dot
▶
N
＝
0 [cells / full-black
screen]
▶
N
＝
0 [cells / full-black
screen]
▶
D
≥
100 mm
for A-zone
▶
N
≤
2
[cells / 100mm -
diameter-circle
/ full-white screen]
for B-zone
▶
N
≤
2
[cells / 100mm -
diameter-circle
/ full-white screen]
for
overlapped A/B-zone
▶
Total sum of all defects N
≤
17 [cells / full-white screen]
Stain
▶
N
≤
3 , for the stain of which longer-axis length is
5mm or shorter.
▶
N
＝
0 , for the stain of which longer-axis length is
longer than 5mm.
▶
D
≥
50 mm
Quality decision point
*Cell defect definition
☞
1) Non-Ignition Dot (Dark Defect) is defined as “A cell of which more than 50% area is not ignited”
☞
2) Unstable Dot (Flickering) is defined as “A cell which repeats On and Off”
☞
3) Uncontrollable Dot is defined as “A cell which is distinctly brighter or darker than other cells around it” and/or
A cell of which color is distinctly different from that of other cells around it”
☞
4) Non-Extinguishing Dot (brightness defect) is defined as “A cell of which more than 50% area is always ON”
☞
5) Stain is defined as “A blob due to local color contamination in white or simple color pattern”
* Test results are satisfied with each full red, green, blue, black and white test pattern
-
Specifically, The full white test pattern is used to decide the number of continuous cell
defects and Non-Ignition defects, The full black test pattern is used to decide the
number of Non-extinguishing cell defect