Display Panel Detection Line Layout for Special-Shaped Screens
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Solution Overview
Problem
Display panels with special-shaped screens, such as polygonal or circular screens, face challenges in defect detection during manufacturing due to limited space in the peripheral region, leading to difficulties in placing detection units and subsequent corrosion issues when lines are exposed during cutting.
Innovation Solution
The display panel design includes to-be-detected lines with first and second sub-lines, where one end of the second sub-line is exposed outside the panel edge and connected to a detection unit before cutting, using conductive lines that are not easily corroded to prevent corrosion and facilitate defect detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detection units are placed in the peripheral region of the display panel, then defect detection capability is improved, but the available space for special-shaped screens is reduced and corrosion risk increases during cutting
Solution Approach 1:
The to-be-detected line is segmented into two separate sub-lines: a first sub-line that remains inside the display panel and a second sub-line that extends outside the panel edge. This segmentation allows the detection unit to be positioned externally while maintaining the detection function, thus resolving the space constraint in the peripheral region.
Solution Approach 2:
A conductive line is introduced as an intermediary element to bridge the first sub-line (inside the panel) and the second sub-line (outside the panel). This conductive line facilitates electrical connection for defect detection while being positioned in the peripheral region without requiring additional detection units inside the limited space.
2Measurement precision
If lines are exposed outside the panel edge for detection, then defect detection is enabled, but corrosion risk increases during cutting
Solution Approach 1:
The conductive line serves as a protective intermediary that connects the internal first sub-line to the external second sub-line. This conductive line is specifically positioned to avoid exposure during cutting, thereby preventing corrosion while still enabling the external connection needed for defect detection.
Solution Approach 2:
The conductive line is pre-positioned and protected during the cutting process before the final connection is established. This preliminary protection prevents corrosion from occurring during manufacturing, ensuring reliability before the detection function is activated.
Data Source
AI summary
Provided is a display panel. The display panel includes a driver circuit, at least one to-be-detected line, and at least one conductive line in one-to-one correspondence with the at least one to-be-detected line. Any to-be-detected line in the at least one to-be-detected line includes a first sub-line and a second sub-line arranged separating from each other, and another end of the second sub-line is exposed out of an edge of the display panel. The second sub-line is configured to be electrically connected to a detection unit outside the display panel prior to cutting of a display panel motherboard including the display panel.