Patent ID: 7531394

Claim:
A manufacturing method for a thin film transistor (TFT) liquid crystal display (LCD) array substrate, comprising the steps of: 1) depositing on an insulating substrate in order a gate metal film, a gate insulating film, a semiconductor film, an ohmic contact film, and a source/drain metal film; 2) forming a first photoresist completely retained region, a first photoresist partially retained region, and a first photoresist-free region on the source/drain metal film with a first gray tone mask; 3) etching in order the source/drain metal film, the ohmic contact film, the semiconductor film, the gate insulating film, and the gate metal film in the first photoresist-free region; 4) removing the photoresist in the first photoresist partially retained region, partially retaining the photoresist in the first photoresist completely retained region, and then etching the source/drain metal film and the ohmic contact film in the first photoresist partially retained region to form a gate line and a TFT channel; 5) removing the partially retained photoresist in the first photoresist completely retained region to form a segmented data line, a source electrode and a drain electrode; 6) depositing a passivation protection film, and forming on the passivation protection film a second photoresist completely retained region, a second photoresist partially retained region, and a second photoresist-free region with a second gray tone mask; 7) etching the passivation protection film in the second photoresist-free region to form a source via hole over the source electrode, a drain via hole over the drain electrode, and data via holes over the ends of the segmented data line, respectively; 8) removing the photoresist in the second photoresist partially retained region, partially retaining the photoresist in the second photoresist completely retained region, and then depositing a layer of transparent conductive film on the resultant substrate; and 9) removing the remaining partially retained photoresist and the transparent conductive film thereon, retaining the transparent conductive film connecting the segmented data line, the transparent conductive film connecting the segmented data line and the source electrode, and the transparent conductive film in a region of a pixel electrode.