Patent ID: 8194227
Filing Date: 2012-06-05
Classification: G02F,G09G

Abstract:
1. A method of fabricating MVA active matrix substrate, and said substrate constituting an active matrix display device, characterized in that: three photolithographic steps are performed in the fabrication process: (1) a step of forming a gate electrode, a pixel electrode and a contact pad in said pixel electrode via photolithography using a halftone exposure method, wherein the halftone exposure method is used for the first time in the fabrication process; (2) a step of forming a separate thin film semiconductor layer component, and a contact hole via photolithography using the halftone exposure method, wherein the halftone exposure method is used for the second time in the fabrication process; (3) a step of forming a source electrode, a drain electrode, an orientation control electrode and a common electrode via photolithography using a general exposure method such that after an ohmic contact layer of a channel portion of said thin film transistor is dry etched, a partial film of a passivation layer is formed by a silicon nitride film by using a mask deposition method wherein said film is formed at a terminal portion other than those of a gate electrode, a source electrode and a common electrode.