Patent ID: 8717530
Filing Date: 2014-05-06
Classification: G02F,H01L

Abstract:
1. A method of manufacturing an array substrate, comprising the steps of: (a) forming a gate scanning line, a thin film transistor, a data line, a passivation layer as an overlying layer, and a through hole in the passivation layer on a substrate; (b) depositing an amorphous-type indium tin oxide film after step (a) and heating the substrate at a predetermined temperature thereby achieving a phase-transition at a bottom of the indium tin oxide film from amorphous-type into poly-type; (c) patterning the indium tin oxide film to form pixel electrodes, each of which comprises a single transmissive region and a reflective region, on the substrate after step (b), removing only the amorphous-type indium tin oxide film of the reflective region so that the poly-type indium tin oxide are left in the reflective region to form a reflective region pattern, the entirety of the amorphous-type indium tin oxide film and the poly-type indium tin oxide film of the transmissive region remain such that the amorphous-type indium tin oxide film is continuously formed in the single transmissive region; and (d) depositing and patterning a metal material on the substrate after step (c) thereby forming a metal film on the reflective region pattern, wherein step (c) comprises the steps of: (c-1) forming a photoresist pattern by patterning a photoresist film applied on the substrate after step (b), in which the photoresist film is left in the reflective region and the transmissive region and a thickness of the photoresist film in the reflective region is smaller than in the transmissive region; (c-2) etching the amorphous-type indium tin oxide and the poly-type indium tin oxide by an indium tin oxide etchant, so as to form the pixel electrode comprising the transmissive region and the reflective region; (c-3) removing the photoresist film in the reflective region by an ashing treatment; and (c-4) etching the amorphous-type indium tin oxide in the reflective region with an amorphous-type indium tin oxide etchant and leaving the poly-type indium tin oxide.