Pixel Circuit Integrating Biosignal Sensing and Stimulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies lack an efficient and integrated solution for both sensing and stimulating biosignals in a living body, particularly for precise brain wave measurement and treatment, as existing devices are not adequately configured to selectively target and process biometric data and stimulation signals within the human body.
Innovation Solution
A pixel circuit and electronic device configuration that includes a sensing block, stimulation block, and control circuits to selectively output biometric data and stimulation signals, utilizing transistors and control circuits to manage signal selection and processing, and a shared reference voltage system for efficient operation on a flexible substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate devices are used for sensing and stimulating biosignals, then device functionality is simplified, but integration efficiency and targeted treatment capability are reduced
Solution Approach 1:
The patent combines sensing blocks and stimulation blocks into a single integrated pixel circuit array, allowing both biosignal sensing and stimulation functions to coexist in one device. This merging enables efficient integration while maintaining distinct functional blocks for each operation mode.
Solution Approach 2:
The pixel circuit array is designed to perform multiple functions - both sensing biosignals and delivering stimulation signals - through the same physical substrate and circuit architecture. The circuit can operate in different modes (sensing mode and stimulation mode) depending on the applied control signals, achieving multi-functionality without requiring separate dedicated devices.
2Ease of operation
If a pixel circuit integrates both sensing and stimulation functions, then targeted treatment capability is enhanced, but signal selection and processing complexity increases
Solution Approach 1:
The pixel circuit is segmented into distinct functional blocks - sensing blocks for detecting biosignals and stimulation blocks for delivering treatment signals. Each block is controlled by separate control circuits that generate specific control signals, allowing independent operation and simplified signal selection through modular control architecture.
Solution Approach 2:
The circuit operates dynamically by switching between sensing mode and stimulation mode based on applied control signals. The control circuits can selectively activate different blocks at different times, enabling flexible operation where the same physical circuit adapts its function based on real-time control signal inputs.
3Manufacturing precision
If multiple pixel circuits share a reference voltage, then manufacturing precision and consistency are improved, but voltage stability and signal processing accuracy may deteriorate
Solution Approach 1:
Multiple pixel circuits share a common reference voltage line that maintains equipotential conditions across all circuits. This shared reference voltage ensures consistent voltage levels throughout the array, improving manufacturing precision and circuit matching while the large-scale integration on a single substrate minimizes voltage drops and maintains stability.
Data Source
AI summary
A pixel circuit includes a sensing block, a stimulation block, a first line control circuit, and a second line control circuit. The sensing block outputs biometric data of a biosignal in response to a first selection signal. The stimulation block radiates a stimulation signal in response to a second selection signal. The first line control circuit outputs the first selection signal for selecting the sensing block as a target sensing block, and outputs the second selection signal for selecting the stimulation block as a target stimulation block. The second line control circuit processes characteristic data associated with the biometric data and the stimulation signal.