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1. Pollution in the box
In the dark field (Or bright field)There is white (Or blue black) The spots appear, which is caused by dirt inside the liquid crystal box, commonly known as internal dirt. The reason for its formation is that foreign matter is attached to the glass surface or the powder in the powder spraying process does not disperse before the glass is bonded.
The LCD screen is visually observed in the display area fingerprint marks, this is the trace left by the operator's fingers touching the iTO surface and PI surface of the glass before the glass is attached.
if no dark field is observed during visual inspection (Or bright field) This is the trace left by the operator's fingers touching the ITO surface and PI surface of the glass before the glass is attached.
4, border deformation
visual inspection found that the border width of the uneven phenomenon is called border deformation.
The color unevenness of ring or ribbon is observed on the LCD screen during visual inspection, which is called Rainbow.
bubble refers to the fact that the LCD screen is not completely filled with the liquid crystal in the LCD box during visual inspection, it is still possible to see the phenomenon of bubbles. This is mainly due to errors in the process of liquid crystal perfusion.
7. Air leakage
On the visual inspection table, if it is observed that a small amount of gas enters the seal of the liquid crystal box or the seal is not sealed, it is called air leakage.
8. Bad cutting
bad cutting is the appearance of irregular glass edges caused by improper cutting or grain breaking.
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