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1.Quality Control
£¨£±£©In process control
¡¡1.On line QC (clean, print, chip position)
¡¡2.After wire bonding 100% test and inspection .(electrical, optical )
3.Final test and inspection (100% QC , Mechanical, electrical
,optical. )
4.Functional test of LSI , LCD (contrast , etc) .
£¨£²£©Out Going quality control
¡¡1.functional test . (electrical , AC , DC , terminal , mechanical )
2.LCM QC test. (contrast characters , display
, etc. )
3.Sampling QC according to AQL Standard. (value=0.65% )
£¨£³£©Inspection for bought material , component , device
¡¡1.Inspection for bought devices(Transistors , diodes , LSI s )
2.Inspection for bought Components (resistors
, capacitors , connectors .)
3.Other materials (PCB , Zebra band¡)
2. QUALITY ASSURANCE
FLOW CHART
3.
ACCEPTABLE QUALITY LEVEL
| Inspection
items
|
Sampling
procedures
|
AQL |
| Visual-operating
(Electro-optical)
|
MIL-STD-105D
Inspection level ¢ñ
Normal inspection
Single sample inspection
|
1.5
|
| Visual-not
operating
|
MIL-STD-105D
Inspection level ¢ñ
Normal inspection
Single sample inspection
|
1.5
|
| Dimension
measurement
|
MIL-STD-105D
Inspection level ¢ñ
Normal inspection
Single sample inspection
|
1.0
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4. INSPECTION
CONDITIONS
1).
The Enviromental Conditions
-Room temperature£º 25¡À3oC
-Humidity£º65¡À20%RH
5. INSPECTION
STANDARDS
1).VISUAL INSPECTION WHILE
OPERATING
| Items to be
inspected
|
Inspection
standard
|
| . No display
|
. If any pattern is
not active at all, they can be rejected.
|
| .Irregular
operating
|
.No irregular operating
are allowed
.Shows different display from, which should be chosen in the
pattern, or appears in different position from where they should
be chosen. |
| .Irregular display
|
. Any segment isn¡¯t
active, they can be rejected.
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| . Over current
|
. The total
current required to activate the module should not be exceed
the MAX current in specification.
|
| .View angles
|
. If values
that don¡¯t meet the minimum value noted in the specification.
they can be rejected.
|
| .Contrast Ratio
|
. If values that don¡¯t
meet the minimum value noted in the specification, they can
be reject.
|
| .LCD operating
voltage
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. Meet the
specification.
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2).Visual inspection while not operating
Module dimension
|
. Meet the module outline drawing, not exceed the tolerance. |
LCD panel scratch
|
.Following scratches inside the effective
viewing area are considered as the defects when their width &
length are larger than the following combinations.
| Number |
Width |
length |
| ¡Ý1 |
0.15mm |
5.0mm |
| ¡Ý2 |
0.10mm |
3.0mm |
| ¡Ý3 |
0.05mm |
2.0mm |
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6.RELIABILITY
Standard Specification for Reliability of General
purpose LCM
| Test Item
|
Test Condition
|
Note
|
| High Temperature
Storage
|
60¡æ,30%RH,
120 hours
|
2 |
| Low Temperature
Storage
|
-20¡æ, 120 hours
|
2 |
| Humidity Storage
|
40¡æ,95%RH (no dewing),
120hours
|
1,2 |
| High Temperature
Operation
|
40¡æ,30%RH.
Standard voltage,120 hours
|
¡¡ |
| Temperature
Cycling
|
-20oC
¡¡¡ú¡¡25oC ¡¡¡ú¡¡2 0oC¡¡ ¡ú ¡¡25oC(30Mins)¡¡¡¡(10Mins)¡¡¡¡(30Mins)¡¡(10Mins)
¡û©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤©¤¡ú
¡¡¡¡¡¡¡¡¡¡¡¡ 10 Cycles |
1,2 |
| Mechanical
Vibration
|
Frequence: 5-500hz,
Acceleration:1.0 g,
Amplitude:1.0mm, Scantime:15mins,
Twice in the direction of X,Y,Z
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¡¡ |
Note 1: Condensation of water is not permitted
on the module.
Note 2: The module should be inspected
after 1 hour storage in normal
conditions (15 to 35¡æ,45 to 65%RH)
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