The black matrix prevents {HEAD ~ the light leakage} in regions occupied with the gate lines, {TAIL ~ the data lines}, and the thin film transistors 
The black matrix prevents { HEAD ~ the light leakage } in regions occupied with the gate lines , { TAIL ~ the data lines } , and the thin film transistors
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH