Display Panel Scan Line Layout to Prevent CUP Region Coupling
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Solution Overview
Problem
In conventional display panels, the coupling effect between connection wires and pixel driver circuits at the boundary between the main display region and the camera under panel (CUP) region leads to interference with normal display operations due to the merging of scan signal lines.
Innovation Solution
The display panel design includes a function add-on region with auxiliary and main pixel driver circuits, where auxiliary pixel driver circuits are located in the transition display region and main pixel driver circuits are in the main display region, with specific configurations of scan signal lines to prevent coupling effects by floating the second auxiliary scan signal lines, thereby isolating them from the connection wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If at least two scan signal lines are merged into a wire by connection wires to be connected to a pixel driver circuit of the CUP region, then the number of connection wires is reduced, but a coupling effect easily occurs between the connection wire and the pixel driver circuit to influence normal display
Solution Approach 1:
The scan signal lines are segmented into first scan signal lines connected to main pixel driver circuits and second scan signal lines connected to auxiliary pixel driver circuits. This segmentation prevents the merging of scan signal lines into single connection wires, thereby eliminating the coupling effect between connection wires and pixel driver circuits while maintaining separate connection paths for different pixel types.
Solution Approach 2:
The harmful connection wires that cause coupling effects are extracted from the system by directly connecting scan signal lines to pixel driver circuits without intermediate merging. The patent removes the problematic connection wire structure that merged multiple scan signal lines, replacing it with direct connections that eliminate the coupling issue.
2Device complexity
If auxiliary scan signal lines are connected to main scan signal lines, then the scan signal transmission is simplified, but the coupling effect may still occur
Solution Approach 1:
The scan signal lines are divided into distinct first scan signal lines for main pixel driver circuits and second scan signal lines for auxiliary pixel driver circuits. This segmentation maintains separate transmission paths that do not merge into coupling-prone configurations, allowing simplified connection without the harmful effects of wire merging.
3Object-affected harmful factors
If one end of auxiliary scan signal lines is allowed to float, then the coupling effect is prevented, but the electrical connection stability may be affected
Solution Approach 1:
The auxiliary scan signal lines are segmented with one end connected to auxiliary pixel driver circuits and the other end left floating. This segmentation allows the connected end to maintain stable electrical connection while the floating end prevents coupling effects from propagating, achieving both connection stability and coupling prevention.
Solution Approach 2:
The floating end of auxiliary scan signal lines, which might seem to reduce connection stability, is converted into a beneficial feature that actively prevents coupling effects. The floating configuration acts as an electrical isolation point that blocks coupling interference while maintaining functional connection stability where needed.
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes pixel rows, auxiliary pixel driver circuits, main pixel driver circuits, and gate electrode driver circuits. Scan signal lines of each level include auxiliary scan signal lines of a number Q. Connecting first auxiliary scan signal lines of a number Z of the auxiliary scan signal lines of a number Q to corresponding ones of the gate electrode driver circuits and setting an end of second auxiliary scan signal lines to float prevents setting a connection wire connecting two of the auxiliary scan signal lines to avoid coupling.