Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Positioning measurement and defect detection method of display screen

A defect detection and positioning measurement technology, applied in optical testing flaws/defects, measuring devices, material analysis by optical means, etc., can solve problems such as poor effect and low efficiency of manual naked eye detection, and achieve the guaranteed pass rate and solution effect. poor effect

Inactive Publication Date: 2017-02-22
SHANTOU UNIV +1
View PDF11 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a positioning measurement and defect detection method of a display screen, which solves the problem of low efficiency and poor effect of detection by human eyes in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Positioning measurement and defect detection method of display screen
  • Positioning measurement and defect detection method of display screen
  • Positioning measurement and defect detection method of display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Example, Dust and Bubble Detection

[0044] Step 1. Determine the detection area as the range of 20×20mm from the display frame to the inner side of the display, such as Figure 10 so;

[0045] Step 2. Find the inner intersection point of the silver paste by means of threshold segmentation and search for a straight line, and draw two lines, such as Figure 11 shown;

[0046] Step 3. Determine the area to detect dust, such as Figure 12 shown;

[0047] Step four, find dust, such as Figure 13 shown;

[0048] Step 5. Find the bubbles, such as Figure 14 shown;

[0049] Step 6. Defect integration, such as Figure 15 shown;

[0050] Complete dust and air bubble detection.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of glass detection, and particularly relates to a positioning measurement and defect detection method of a display screen; a display screen detecting device is applied to perform the positioning measurement and defect detection on the display screen; the display screen detecting device comprises a first camera, a second camera, a camera bracket, an X-axis servo motor and a Y-axis servo motor; the first camera and the second camera are arranged on the camera bracket, the X-axis servo motor drives the camera bracket to move along the X axis direction, and the Y-axis servo motor drives the camera bracket to move along the Y axis direction; the positioning measurement and defect detection includes image collection, image pretreatment and surface defect detection. Compared with the prior art, the invention can shoot, position and detect the display screen by the detection device, effectively detect multiple defects of the display screen, solve the problem of low detection efficiency and bad effect of naked eye of people, and guarantee the product yield.

Description

technical field [0001] The invention relates to the field of glass detection, in particular to a positioning measurement and defect detection method of a display screen. Background technique [0002] In the production process of the display screen, due to the influence of uncertain factors in the production process, the display screen is prone to surface shape defects, such as glass edge damage, cracks, bubbles between the glass and the protective film, dust, etc., these defects will cause glass The quality is not up to standard, so the display needs to be tested for quality. In the prior art, this kind of production defect is detected manually by naked eyes, but such problems are not obvious, and it is difficult to detect them one by one. In the prior art, there is also a lack of corresponding detection equipment for automatic detection, and some manufacturers do not even The display screen after the film is tested, which makes it difficult to guarantee the product qualifi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/94
CPCG01N21/94G01N2021/8887G01N2201/102
Inventor 肖茵张健林典钦周寅彬王双喜
Owner SHANTOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com