US 12,530,762 B2Granted

Method for measuring actual area of defect, and method and apparatus for testing display panel

AssigneeBoe Technology Group Co., Ltd.

InventorsWangqiang He, Yiwen Ding, Yuanyuan Lu, Dong Chai, Hong Wang

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Abstract

A method and apparatus for measuring the actual area of a defect, and a method and apparatus for testing a display panel. The method for measuring the actual area of a defect includes: acquiring a measurement image of a display panel, wherein the measurement image has a defect region; according to the measurement image, determining the area of defect pixels of the defect in the measurement image and determining the size of reference object pixels of a reference object in the measurement image; and according to the area of the defect pixels, the size of the reference object pixels and the actual size of the reference object, determining the actual area of the defect in the display panel.

Claims12

Dependent claims

A method for inspecting a display panel, comprising:

collecting an inspection image of a current display panel, wherein the inspection image comprises a defect region;
determining an actual area of a defect in the current display panel in response to a defect region existing in the inspection image, wherein the actual area of the defect in the current display panel is determined through a method for measuring the actual area of the defect;
determining whether the actual area is greater than an actual threshold;
in response to the actual area being greater than an actual threshold, determining the current display panel corresponding to the inspection image as a defective display panel;
and
in response to the actual area not being greater than an actual threshold, determining the current display panel corresponding to the inspection image as a qualified display panel;
wherein the method for measuring the actual area of the defect comprises:
determining a defect pixel area of the defect in the inspection image and a reference object pixel size of a reference object in the inspection image according to the inspection image;
and
determining the actual area of the defect in the current display panel according to the defect pixel area, the reference object pixel size, and an actual size of the reference object.

7 more elements

Dependencies are inferred from the claim text.