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Defect detection method, defect detection device and detection method of touch display panel

A technology of defect detection and detection position, which is applied in the field of defect detection, can solve the problems of large gray scale difference and low detection rate, and achieve the effect of reducing gray scale difference and improving detection ability

Active Publication Date: 2020-04-10
HEFEI VISIONOX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the long-period comparison method is used for inspection, the noise in the process will lead to large differences in gray scales, resulting in a low detection rate of defects

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  • Defect detection method, defect detection device and detection method of touch display panel
  • Defect detection method, defect detection device and detection method of touch display panel
  • Defect detection method, defect detection device and detection method of touch display panel

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Embodiment Construction

[0026] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation...

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Abstract

The invention discloses a defect detection method, a detection device and a detection method of a touch display panel. The defect detection method comprises the following steps of: acquiring a detection image of a to-be-detected object, wherein an initial gray-scale curve is provided with a plurality of gray-scale peak parts; reducing the gray-scale difference among the plurality of gray-scale peak parts in the initial gray-scale curve, enabling the initial gray-scale curve to be converted into a processed gray-scale curve; matching a corresponding defect threshold line with the processed gray-scale curve, wherein the defect threshold line is a relation line of a gray scale threshold when a defect is generated at the detection position of a to-be-detected object and a corresponding detection position; and acquiring a defect position of the to-be-detected object according to the processed gray-scale curve and the defect threshold line. According to the defect detection method provided by the embodiment of the invention, the defect detection capability can be improved.

Description

technical field [0001] The present invention relates to the field of defect detection, in particular to a defect detection method, a detection device and a detection method for a touch display panel. Background technique [0002] During the manufacturing process of the display panel, there may be defects in the display panel due to process problems. In order to find defects in the display panel, it is necessary to inspect the display panel, so as to find the position of the defect in the display panel, and make targeted improvements. [0003] Since the size of the device structure on the display panel is so small that human eyes can hardly distinguish it, in order to meet the demand for defect detection of the display panel, Automated Optical Inspection (AOI) came into being. [0004] The display panel may be integrated with a touch layer, that is, the display panel may be a touch display panel. When using AOI to detect defects on the touch layer of a touch display panel, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G06T7/00G06T7/70
CPCG01N21/8851G06T7/0004G06T7/70G01N2021/8887G01N2021/8861G01N2021/888G06T2207/10004G06T2207/30121
Inventor 张俊杰季迪
Owner HEFEI VISIONOX TECH CO LTD