Datasheet

DEM 16227 SYH-LY Product Specification
VERSION: 2 PAGE: 18
deviation from its sample and found that the color not
conforming to the drawing after testing.
and drawing
6.3.3
Brightness
deviation
When powered on, the LCD brightness
differs from its sample and is found after
testing not conforming to the drawing; or if
it conforms to the drawing but the
brightness over ±40% than its typical value.
Refer to sample
and drawing
√
6.3.4
Uneven
brightness
When powered on, the LCD brightness is
uneven on the same LCD and out of the
specification of the drawing. The no
specification evenness= (the max value-
the min value)/ mean value< 70%.
Refer to sample
and drawing
√
6.3.5
Spot/line
scratch
When power on, it with dirty spot,
scratches and so on spot and line
defects
Refer to 6.2.1 √
6.3.6 BL wrapped The BL should paste tightly on the PCB.
The BL can be
allowed within
1mm wrapped
parts, if them not
affect its
appearance and
outline
dimension.
√
6.3.7
Flicker and
with LED
shade
When power on, each bright source should
not with flicker and the brightness should
evenness and without LED shades.
Reject √
6.4 Metal frame (Metal Bezel)
No. Defects Description
Acceptance
standard
MAJ MIN
6.4.1
Material/surface
treatment
Metal frame/surface treatment do not
conform to the specifications.
Reject √
6.4.2
Tab twist
inconformity/
Tab not twisted
Wrong twist method or direction and twist
tabs are not twisted as required.
Reject √
6.4.3 Oxidization Oxidation on the surface of the metal bezel Reject √
6.4.4
Painting peel
off,
discoloration,
dents, and
scratches
1）the front surface with painting peel off
and scratched can be see the bottom:
Dot : D≤0.5mm, exceeds 3;
Line: length ≤3.0mm, width ≤0.05mm ,
exceeds 2;
2）front dent, air bubble and side with
painting peel off which scratched can be
see the bottom:
Dot: D≤1.0mm, exceeds 3;
Line: length ≤3.0mm, width ≤0.05mm,
exceeds 2.
Reject √
6.4.5 Burr
Burr(s) on metal bezel is so long as to get
into viewing area.
Reject √