Patent ID: 9595093
Date: 2017-03-14
CPC Classifications: G06T

Claim:
1. A method for detecting alignment film coated on a substrate of a liquid crystal panel, comprising: obtaining an image of an alignment film test region of the substrate, wherein, the alignment film test region is an annular region with edges of an active display area of the substrate as an internal boundary of the alignment film test region; and analyzing continuity of the alignment film along the internal boundary of the alignment film test region in the image obtained so as to determine whether thickness of the alignment film in the active display area of the substrate is uniform; wherein if the alignment film along the internal boundary of the alignment film test region in the image has no breakpoint, the alignment film along the internal boundary of the alignment film test region in the image is determined as continuous and the thickness of the alignment film in the active display area of the substrate is determined as uniform, and wherein the no breakpoint indicates that the active display area of the substrate is coated entirely by the alignment film.