Patent ID: 8008139

Claim:
A method of manufacturing a thin film transistor array substrate, comprising: forming a first photoresist pattern on a first metal layer with a use of a first mask; forming gate electrodes, gate lines and gate pads on a substrate with the use of a first photoresist pattern; forming a gate insulation film, a semiconductor layer, and a second metal layer on the substrate; forming a second photoresist pattern on the second metal layer with the use of a second mask; forming first contact holes for the gate pads with the use of the second photoresist pattern; ashing the second photoresist pattern to form a third photoresist pattern, and forming patterns for data pads, data lines, and thin film transistors with the use of the third photoresist pattern; ashing the third photoresist pattern to form a fourth photoresist pattern, and forming contact holes for source/drain electrodes and second contact holes for the gate pads with the use of the fourth photoresist pattern; forming a protective film on the substrate and providing a fifth photoresist pattern on the protective film with the use of a third mask; forming third contact holes for the gate pads, contact holes for the data pads, gate lines, and drain electrodes, and contact holes for pixel electrodes, with the use of the fifth photoresist pattern; forming a transparent conduction film on the fifth photoresist pattern having the contact holes, to provide first transparent electrodes for the gate pads into the third contact holes, second transparent electrodes into the contact holes for the data pads, third transparent electrodes into the contact holes for the pixel electrodes, fourth transparent electrodes into the contact holes for the gate lines, and fifth transparent electrodes into the contact holes for the drain electrodes; and removing the fifth photoresist pattern, wherein the third mask includes transmissive regions transmitting lights, semi-transmissive transmissive regions partially transmitting and intercepting the lights, and interceptive regions intercepting the lights, and the three regions have different transmittances.