Guo-lei WANG, Peng CHEN, Heng-bin LI, et al. ESD related defects analysis and improvement design solution in TFT-LCD rubbing process[J]. Chinese journal of liquid crystals and displays, 2019, 34(8): 733-738.
Guo-lei WANG, Peng CHEN, Heng-bin LI, et al. ESD related defects analysis and improvement design solution in TFT-LCD rubbing process[J]. Chinese journal of liquid crystals and displays, 2019, 34(8): 733-738. DOI: 10.3788/YJYXS20193408.0733.
the line defects in the TFT-LCD rubbing process are analyzed
and the two directions of reducing ESD(Electro Static Discharge) risk are verified by cutting verification and design change. Through the analysis of the actual verification results
it is found that reducing the area of the Dummy pattern or connecting the dummy pattern to
V
com
and improving the distance from the Dummy pattern to the signal line above 60 μm
can greatly reduce the probability of ESD occurrence
and the defect ratio is reduced from 20% to 0%. The results fully demonstrate that this design can be applied to the actual product design to reduce the ESD risk during the rubbing process.
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