Touch Display Panel Electrode Integration for Compact Multi-Function Sensing
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Solution Overview
Problem
Existing display panels with touch detection functions lack multifunctionality, as they do not effectively integrate advanced touch detection capabilities into their design.
Innovation Solution
The integration of drive electrodes and touch detection electrodes into a single chip, with the electrode drive section applying drive signals to the electrodes, enabling advanced touch detection and display functionality in a compact form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive electrodes and touch detection electrodes are integrated into a single chip, then touch detection capabilities are enhanced and circuit area is reduced, but device complexity increases
Solution Approach 1:
The patent integrates the drive electrode and touch detection electrode into a single chip structure, combining previously separate components. This merging enables enhanced touch detection capabilities while reducing the overall circuit area, directly addressing the technical contradiction by consolidating multiple functions into one integrated unit.
Solution Approach 2:
The integrated chip serves multiple functions: it acts as both a drive electrode for display control and a touch detection electrode for sensing input. This multi-functionality allows the single component to perform diverse operations, enhancing versatility without proportionally increasing complexity.
2Area of stationary object
If electrode drive section is integrated into a chip, then circuit area is reduced and power efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The electrode drive section is integrated directly into the chip structure, eliminating the need for separate driver circuits. This consolidation reduces the overall circuit area while improving power efficiency by minimizing signal transmission paths and reducing parasitic effects.
Solution Approach 2:
The patent implements localized electrode structures with specific geometric configurations that optimize both area utilization and manufacturing feasibility. By designing electrodes with appropriate dimensions and spacing, the patent balances area reduction with manufacturing precision requirements.
3Measurement precision
If touch detection electrodes extend in intersecting directions, then touch detection accuracy is improved, but frame region increases
Solution Approach 1:
The patent employs touch detection electrodes that extend in intersecting directions (e.g., horizontal and vertical orientations), creating a two-dimensional detection grid. This dimensional approach improves touch detection accuracy by enabling precise coordinate identification while maintaining efficient use of the display area.
Solution Approach 2:
The electrode structure is segmented into multiple sections extending in different directions, allowing independent optimization of each segment. This segmentation enables accurate touch detection across the display surface without requiring a uniform increase in frame region.
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
This solution allows for enhanced touch detection capabilities and more intricate power supply control, reducing the circuit area and enabling more complex touch detection scanning, while also reducing the frame region and improving power efficiency.
Implementation Method 1
an electrode drive section integrated into a chip, and applying a drive signal to the drive electrodes
Implementation Method 2
a capacitance between the common electrode and the touch detection electrode. Then, a touch event is detected based on a detection signal outputted from the touch detection electrode
Data Source
AI summary
There are provided a display panel with a touch detection function, a drive circuit, and an electronic unit, which make it possible to realize many functions related to touch detection. The display panel includes: one or more display elements; one or more drive electrodes extending in one direction; an electrode drive section integrated into a chip, and applying a drive signal to the drive electrodes; and one or more touch detection electrodes extending in a direction intersecting the direction in which the drive electrodes extend.