Touch Display Panel Drive Circuit for Multifunction Scanning
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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 drive signal applied by an electrode drive section, allows for enhanced touch detection functionality, including the ability to detect touch events and control power supply efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive electrodes and touch detection electrodes are integrated into a single chip with electrode drive section, then multifunctionality and flexibility are improved, but device complexity increases
Solution Approach 1:
The patent integrates the drive electrodes and touch detection electrodes into a single chip structure, combining multiple functional elements that were previously separate. This merging enables the display panel to perform both display and touch detection functions within a unified device, improving multifunctionality while managing complexity through integrated design
Solution Approach 2:
The electrode drive section is designed to serve multiple purposes: it drives the display elements and simultaneously performs touch detection scanning. This multi-functional design allows a single component to handle diverse operations, enhancing versatility without requiring separate dedicated circuits for each function
2Area of stationary object
If electrode drive section is integrated into chip, then circuit area is reduced, but manufacturing precision requirements increase
Solution Approach 1:
By integrating the electrode drive section directly into the chip, the patent reduces the overall circuit area by eliminating separate discrete components and their associated interconnections. This consolidation achieves compactness while the integrated architecture inherently manages manufacturing precision through unified fabrication processes
3Measurement precision
If touch detection electrodes extend in direction intersecting drive electrodes, then touch detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent employs an asymmetric electrode arrangement where touch detection electrodes extend in a direction intersecting with the drive electrodes. This asymmetric configuration optimizes the capacitive coupling for touch detection, improving measurement precision by creating favorable electric field interactions at intersection points while maintaining manageable device complexity through the regular pattern
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 enables more complex touch detection scanning and intricate power supply control, reducing the circuit area and frame region, thus improving the multifunctionality and flexibility of the display panel.
Implementation Method 1
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
Implementation Method 2
one or more touch detection electrodes extending in a direction intersecting the direction in which the drive electrodes extend
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.