Integrated Sensing Panel Layout for Thin Touch and Stylus Input
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Solution Overview
Problem
The use of separate touch panels and digitizers in display devices increases the thickness, necessitating a technological solution to integrate both functionalities into a thinner form factor.
Innovation Solution
A sensing panel design incorporating a base layer with stylus pen driving and touch electrodes, including conductive patterns arranged in specific directions and configurations to facilitate both touch and stylus pen sensing, reducing the need for separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate touch panel and digitizer are used, then touch sensing and stylus pen sensing functions are provided, but device thickness increases
Solution Approach 1:
The patent combines the touch panel and digitizer into a single integrated sensing panel structure. The touch driving electrode and touch sensing electrode are positioned on the same substrate, with the stylus pen driving electrode and stylus pen sensing electrode integrated into the same layer structure. This merging eliminates the need for separate touch panel and digitizer components, thereby reducing device thickness while maintaining both touch sensing and stylus pen sensing functions.
Solution Approach 2:
The sensing panel is designed to perform multiple functions simultaneously: it detects both finger touches and stylus pen inputs using the same structural framework. The conductive patterns are configured to respond to both capacitive touch events and electromagnetic resonance from stylus pens, making the sensing panel a universal input detection system that replaces both the traditional touch panel and digitizer.
2Length of stationary object
If integrated sensing panel is used, then device thickness is reduced, but electrode configuration complexity increases
Solution Approach 1:
The sensing panel is divided into distinct functional regions with specific electrode arrangements. The touch driving electrode and touch sensing electrode are positioned in particular orientations (first and second directions), while the stylus pen driving electrode and stylus pen sensing electrode are configured in complementary patterns. This segmentation of functional zones within the integrated structure allows for systematic design and manufacturing, reducing the practical complexity despite the multi-functional nature of the panel.
Solution Approach 2:
The patent utilizes multi-layer positioning of electrodes in different spatial dimensions. Conductive patterns are arranged in first and second directions with specific overlapping relationships in the third direction (vertical dimension). This three-dimensional electrode configuration allows multiple sensing functions to coexist in a compact space, managing complexity through spatial organization rather than planar arrangement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integrated sensing panel provides both touch and stylus pen sensing capabilities while minimizing device thickness, enhancing usability and reducing bulk.
Implementation Method 1
the pen is driven by an alternating current signal to create a oscillating magnetic field, and the oscillating magnetic field induces a signal in the coils
Implementation Method 2
a touch driving electrode positioned on the touch insulating layer, including a second conductive pattern extending in a first direction, and positioned to overlap the stylus pen driving electrode in a third direction in a plan view, and a touch sensing electrode
Data Source
AI summary
A sensing panel is disclosed that includes a base layer, a stylus pen driving electrode positioned on the base layer and including a first conductive pattern, a touch insulating layer positioned on the first conductive pattern, a touch driving electrode positioned on the touch insulating layer, including a second conductive pattern extending in a first direction, and positioned to overlap the stylus pen driving electrode in a third direction in a plan view, and a touch sensing electrode which is positioned on the touch insulating layer, includes the second conductive pattern extending in a second direction different from the first direction, and is positioned to overlap the stylus pen driving electrode in the third direction in the plan view.