VBWFD1 datasheet(23/25 Pages) MIDASDISPLAYS

23 / 25 page

Item

Criterion

AQL

Cracked

glass

The LCD with extensive crack is not acceptable.

2.5

Backlight

elements

8.1 Illumination source flickers when lit.

8.2 Spots or scratched that appear when lit must be judged.

Using LCD spot, lines and contamination standards.

8.3 Backlight doesn’t light or color wrong.

0.65

2.5

0.65

Bezel

9.1 Bezel may not have rust, be deformed or have

fingerprints, stains or other contamination.

9.2 Bezel must comply with job specifications.

2.5

0.65

X * Y<=2mm

2.5

0.65

2.5

0.65

2.5

Soldering

11.1 No un-melted solder paste may be present on the PCB.

11.2 No cold solder joints, missing solder connections,

oxidation or icicle.

11.3 No residue or solder balls on PCB.

11.4 No short circuits in components on PCB.

2.5

0.65

PCB、COB

10.1 COB seal may not have pinholes larger than 0.2mm or

contamination.

10.2 COB seal surface may not have pinholes through to the

IC.

10.3 The height of the COB should not exceed the height

indicated in the assembly diagram.

10.4 There may not be more than 2mm of sealant outside

the seal area on the PCB. And there should be no more

than three places.

10.5 No oxidation or contamination PCB terminals.

10.6 Parts on PCB must be the same as on the production

characteristic chart. There should be no wrong parts,

missing parts or excess parts.

10.7 The jumper on the PCB should conform to the product

characteristic chart.

10.8 If solder gets on bezel tab pads, LED pad, zebra pad or

screw hold pad, make sure it is smoothed down.

10.9 The Scraping testing standard for Copper Coating of

PCB

Page 23 of 25

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