Capacitive Touch Display Panel Signal Wire Segmentation
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Solution Overview
Problem
In-cell capacitive touch display panels suffer from a strip pattern phenomenon, leading to poor image quality due to non-uniform distribution of sensing electrode signal wires, which affects the load and optical characteristics of the active region.
Innovation Solution
The capacitive touch display panel employs plural sensing electrode signal wire groups, with each group consisting of at least one first sub-signal wire group and one second sub-signal wire group, where the first sub-signal wire group has N wires and the second sub-signal wire group has N+1 wires, ensuring a balanced and uniform distribution to alleviate the strip pattern issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensing electrode signal wires are distributed in the active region, then the touch sensing function is enabled, but non-uniform distribution causes strip pattern and poor image quality
Solution Approach 1:
The signal wire groups are segmented into first sub-signal wire groups and second sub-signal wire groups with different numbers of wires (N and N+1). This segmentation allows for more flexible distribution patterns that can achieve uniform load across the active region while maintaining touch sensing functionality, thereby preventing strip pattern formation.
Solution Approach 2:
Different regions of the active region are assigned different configurations of signal wire groups. By locally adjusting the number and arrangement of signal wires in different sub-signal wire groups, the invention achieves uniform load distribution across the entire active region while maintaining effective touch sensing coverage, thus eliminating the strip pattern issue.
2Reliability
If signal wire groups are distributed to enable touch sensing, then touch functionality is achieved, but non-uniform load distribution occurs
Solution Approach 1:
The signal wire groups are divided into multiple sub-groups with different wire counts (N and N+1). This segmentation enables fine-grained control over load distribution, allowing the system to achieve uniform load across the active region while maintaining comprehensive touch sensing coverage through strategic placement of these segmented groups.
Solution Approach 2:
The invention intentionally uses asymmetric configurations by employing both first sub-signal wire groups with N wires and second sub-signal wire groups with N+1 wires. This asymmetric approach allows for more flexible load balancing across the active region, achieving uniform distribution while maintaining effective touch sensing capability.
3Reliability
If signal wire groups are distributed to provide touch sensing, then touch function is enabled, but optical characteristics become non-uniform
Solution Approach 1:
By segmenting the signal wire groups into sub-groups with different wire configurations (N and N+1), the invention enables precise control over the optical characteristics in different regions. This segmentation allows the system to maintain uniform optical appearance across the display while preserving touch sensing functionality through appropriate placement of these segmented wire groups.
Solution Approach 2:
The invention applies local quality by configuring different sub-signal wire groups with different numbers of wires (N vs N+1) in different regions of the active region. This local variation in wire configuration allows for uniform distribution of optical characteristics across the entire display area while maintaining effective touch sensing coverage, thus preventing strip pattern formation.
Data Source
AI summary
A capacitive touch display panel includes sensing electrode columns and sensing electrode signal wire groups. Each of the sensing electrode columns includes sensing electrodes. The sensing electrode signal wire groups are electrically connected to the sensing electrode columns, in which each of the sensing electrode signal wire groups consists of at least one first sub-signal wire group and at least one second sub-signal wire group, in which the first sub-signal wire group includes N sensing electrode signal wires, and the second sub-signal wire group includes N+1 sensing electrode signal wires, N is a positive integer. Consequently, the capacitive touch display panel of the present invention can improve the active load balance and the optical characteristics of the capacitive touch display panel.