Adaptive Touch Sensing Display Circuit Addressing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touch sensing display devices face performance issues due to electrical interference from associated display devices, which affects the accuracy and efficiency of sensing operations.
Innovation Solution
Implementing adaptive sensing and addressing architectures that adjust sensing and addressing characteristics based on interference patterns, allowing the sensing circuit to optimize its performance by modifying signal-to-noise ratio, sensitivity thresholds, and filtering in response to electrical interference from the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the display device operates with standard addressing characteristics, then the display can be addressed efficiently, but electrical interference is produced that degrades sensing performance
Solution Approach 1:
The sensing circuit dynamically adjusts its sensing characteristics (such as sensing frequency, signal amplitude, or integration time) based on the current addressing characteristics of the display. This dynamic adaptation allows the sensing circuit to optimize its performance in real-time according to the interference conditions, thereby maintaining high sensing accuracy while the display operates efficiently.
Solution Approach 2:
The system changes the parameters of the sensing operation (such as switching between different sensing frequencies, adjusting signal thresholds, or modifying scan rates) in response to the display's addressing characteristics. By varying these parameters, the sensing circuit can avoid interference frequencies and optimize signal detection, resolving the contradiction between display efficiency and sensing accuracy.
2Measurement precision
If the sensing circuit operates with high sensitivity to detect touch accurately, then sensing precision is improved, but the circuit becomes more susceptible to electrical interference from the display
Solution Approach 1:
The sensing circuit incorporates feedback mechanisms that continuously monitor the electrical interference levels from the display and automatically adjust sensing parameters accordingly. When interference is detected, the system feedback-adjusts the sensing frequency, signal filtering, or threshold levels to maintain precision while reducing susceptibility to interference.
Solution Approach 2:
The system introduces intermediary signal processing stages including filtering circuits, amplification stages with adjustable gain, and signal conditioning circuits that act as intermediaries between the raw sensing signal and the final detection. These intermediaries enhance the desired touch signal while attenuating interference from the display, allowing high precision without increased susceptibility.
3Stability of the object's composition
If the display addresses all areas continuously, then complete display coverage is maintained, but power consumption increases and interference is maximized
Solution Approach 1:
The display addressing is segmented into different zones or regions, with the sensing circuit focusing on specific areas of interest rather than continuously scanning the entire display. This segmentation allows the system to maintain complete display coverage when needed while reducing power consumption and interference by selectively addressing only necessary areas during sensing operations.
Solution Approach 2:
The display employs periodic addressing schemes where different areas are addressed in alternating time intervals rather than continuously. During sensing-critical periods, the display can reduce addressing activity or switch to lower-power modes, while still maintaining overall coverage. This periodic action reduces average power consumption and minimizes interference while preserving display completeness.
Data Source
AI summary
The present disclosure provides systems, methods, and apparatus relating to touch sensing display devices that include a sensing device and a display device. In one aspect, a touch sensing display device can include adaptive addressing architecture to adjust an addressing characteristic based at least in part in a sensing characteristic of a sensing device. In another aspect, a touch sensing display device can include adaptive sensing architecture to adjust a sensing characteristic of a sensing device based at least in part on an addressing characteristic of a display device and/or on an electrical interference characteristic altered by an addressing circuit of the display device.