11
MOP-TFT480272-43A-BLM-TPC
11
Inspection Criterion
11.1
Description
This specification is made to be used as the standard acceptance/rejection criteria for the
MOP-TFT480272-43A-BLM-TPC.
11.2
Sample plan
Sampling plan according to GB/T2828.1-2003/ISO 2859-1: 1999 and ANSI/ASQC Z1.4-1993, normal level 2 and
based on:
Major defect: AQL 0.65
Minor defect: AQL 1.5
11.3
Inspection condition
Viewing distance for cosmetic inspection is about 30±5cm with bare eyes, and under a 600~1000lux
environment for visual inspection and 0~200lux for function test. All directions for inspecting the sample
should be within 45°against perpendicular line. (Normal temperature 18
28
C and normal humidity
60
15
RH).
During testing, the LCD is driven using the voltage level (Within
0.5V of the typical value at 25
C.) that
provides the most optical contrast
11.4
Definition of inspection zone in LCD
Figure 7: Inspection Zones in an LCD
Zone A: character/Digit area
Zone B: viewing area except Zone A (ZoneA + ZoneB=minimum Viewing area)
Zone C: Outside viewing area (invisible area after assembly in customer’s product)
*Note:
As a general rule, visual defects in Zone C are permissible, if it does not affect display quality and assembly of
customer’s product
11.5
Function Defect
Items to be inspected
Inspection criterion
Classification of defects
All functional defects
1) No display
2) Display abnormally
3) Missing vertical, horizontal segment
4) Short circuit
5) Back-light no lighting, flickering and abnormal lighting.
6) obvious striation
7) Current beyond specification value
MA
Missing
Missing component
Outline dimension
Overall outline dimension exceed the drawing is not allowed.
A
B C
