Inspection Standard; Electric Inspection Standard - Waveshare 4.2inch e-Paper V2 User Manual

14.5 INSPECTION STANDARD

14.5.1 ELECTRIC INSPECTION STANDARD

NO. Item
1 Display
2 Black/White spots
Black/White spots
3
(No switch)
4 Ghost image
Flash spots/Large FPL
5
size
6 Display wrong/Missing
Short circuit/Circuit
7
break/Abnormal display
Standard
Display complete
Display uniform
D≤0.25mm, Allowed
0.25mm<D≤0.4mm, N≤3, and
Distance≥5mm
0.4mm<D Not Allow
L ≤0.6mm, W≤0.2mm, N≤1
L≤2.0mm, W>0.2mm, Not Allow
L>0.6mm, Not allow
Allowed in switching process
Flash spots in switching, Allowed
FPL size larger than viewing area,
Allowed
All appointed displays are showed
correct
Not Allowed
36
4.2inch e-Paper V2
Defect
Method
level
MA
Visual
inspection
MI
Visual/
Inspection card
Visual
MI
inspection
Visual/
MI
Inspection card
Visual
MA
inspection
User Manual
Scope
Zone A
Zone A
Zone B
Zone A