Touch Display Signal Copying for Contact and Hover Detection
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Solution Overview
Problem
Conventional display devices struggle to accurately recognize touches by contact and non-contact due to limitations in sensing technology.
Innovation Solution
A display device that utilizes a first and second copy touch sensing signal to determine touches by employing a touch driver that processes signals from touch receiving electrodes, enhancing accuracy in touch detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional touch sensing methods are used, then the device structure remains simple, but the accuracy in recognizing contact and non-contact touches deteriorates
Solution Approach 1:
The touch sensing signal is segmented into two separate copy signals, allowing independent processing of contact and non-contact touch detection. This segmentation enables the system to analyze different aspects of touch interaction separately, improving recognition accuracy without overwhelming the processing system
Solution Approach 2:
The patent creates copy touch sensing signals from the original touch sensing signal. These copy signals are processed differently to extract information about contact versus non-contact touches, enabling accurate differentiation while maintaining a relatively simple overall device structure
2Adaptability or versatility
If a single touch sensing signal is used, then the signal processing is simple, but the ability to distinguish contact and non-contact touches deteriorates
Solution Approach 1:
The system dynamically processes the copy touch sensing signals by applying different processing methods to each copy signal. This dynamic approach allows the system to adaptively distinguish between contact and non-contact touches based on the characteristics of each signal, enhancing versatility while keeping processing complexity manageable
Data Source
AI summary
A display device for determining whether a touch occurs by using a first copy touch sensing signal and a second copy touch sensing signal corresponding to a touch sensing signal transmitted from a touch receiving electrode line is disclosed. The display device comprises an image panel having pixels, a touch panel including touch driving electrodes and touch receiving electrodes provided on the image panel, and a touch driver for sensing a touch on the touch panel, wherein the touch driver determines whether a touch occurs in the touch panel by using a first copy touch sensing signal and a second copy touch sensing signal corresponding to a touch sensing signal transmitted from a touch receiving electrode line connected to the touch receiving electrode.