Technical Specs

22
4. Faceplate blemishes
The following criteria of the scratches and the limits of faceplate defects are applied to the useful screen
of the panel face.
4.1 Scratches
Width (mm) Length of single scratch (mm) Allowable number
0.05 or less Ignore 
0.06 ~ 0.12 50 or less 1
0.13 ~ 0.20 6 or less 1
Over 0.21  0
4.2 Limits of faceplate defects
Defects Zone A Zone B
Blister 0.41 – 0.60 0.41 – 0.60
Opaque spot & open blister(mm) 0.41 – 0.60 0.41 – 0.60
Single zone 1 2Allowable number
of defects
Total 2
Major
defects
Allowable minimum separation(mm) 57
Blister 0.25 – 0.40
Opaque spot & open blister(mm) 0.20 – 0.40
Allowable number of defects 2
Gathering
defects
within
φ 50 mm
Allowable minimum separation(mm) 12.7
Width (mm) 0.10 – 0.20 0.10 – 0.30
Maximum length (mm) 4.0 6.0
Elongated
Allowable number
of defects
Total 2