Display Panel Demultiplexing Circuit Matrix for L-Cut Bending
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Solution Overview
Problem
The existing display panels have a large demultiplexing circuit group, which results in a small L-cut length in the driving bonding area, limiting the bending performance and overall size reduction of the display panel.
Innovation Solution
The display panel design includes a substrate with a touch layer and a demultiplexing circuit group arranged along both directions in the non-display area, allowing the demultiplexing circuits to be aligned in columns, thereby reducing their length in the second direction and increasing the L-cut length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the demultiplexing circuit group is arranged in the prior art manner, then the touch electrode connections are maintained, but the length of the demultiplexing circuit group in the second direction becomes very large
Solution Approach 1:
The patent transitions from a one-dimensional linear arrangement of demultiplexing circuits to a two-dimensional matrix arrangement. The demultiplexing circuits are organized in multiple rows and columns, where each row corresponds to a group of touch electrodes. This dimensional change allows the circuit group to occupy a more compact area, significantly reducing the length in the second direction while maintaining all necessary electrical connections between demultiplexing circuits and touch electrodes through the touch wire matrix.
2Reliability
If the demultiplexing circuit group length is large, then all touch electrodes can be connected, but the L-cut length in the driving bonding area becomes small
Solution Approach 1:
By organizing demultiplexing circuits in a two-dimensional matrix structure with rows and columns, the patent reduces the linear extent of the circuit group in the second direction. This compact arrangement creates sufficient space in the driving bonding area to accommodate a longer L-cut, which is essential for the bending structure. The matrix arrangement maintains complete connectivity to all touch electrodes while freeing up the horizontal space needed for the L-cut geometry.
3Device complexity
If the L-cut length is small, then the demultiplexing circuit group can be arranged, but the bending performance and portability are reduced
Solution Approach 1:
The two-dimensional matrix arrangement of demultiplexing circuits optimizes the spatial distribution of the circuit group, reducing its footprint in the critical second direction. This compact configuration directly enables a longer L-cut in the driving bonding area, which in turn improves the bending performance of the display panel. The enhanced L-cut geometry allows for smoother bends and better portability while the matrix structure maintains all necessary circuit connections.
Data Source
AI summary
A display panel is provided. A touch layer includes touch electrodes arranged along a first direction and a second direction. A demultiplexing circuit group includes a demultiplexing circuit corresponding to each touch electrode. The multiple demultiplexing circuits in the demultiplexing circuit group are arranged along the first direction and the second direction according to the multiple touch electrodes. Thereby, a length of the demultiplexing circuit in the second direction can be reduced, which helps increase a length of an L-cut formed in a driving bonding area.