Display Sensor Voltage Detection for Stabilization Capacitor Faults
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Solution Overview
Problem
Existing electronic devices face challenges in maintaining sensing reliability and display quality, particularly due to issues with stabilization capacitors affecting voltage stability and sensor performance.
Innovation Solution
The electronic device incorporates a display layer with a light emitting layer and a sensor layer, where the sensor driving unit operates in detection mode based on voltage data measured between electrodes, and includes a stabilization capacitor to control power supply voltage, allowing for improved sensing reliability and display quality by detecting capacitor faults through voltage fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display layer operates in high luminance mode, then the luminance output is improved, but the voltage stability deteriorates due to capacitor faults
Solution Approach 1:
The sensor driving unit performs preliminary detection of voltage data between the second electrode and sensing electrode before full high luminance mode operation. This preliminary action identifies capacitor faults that would cause voltage instability, allowing the system to prevent or adjust high luminance mode operation accordingly, thus avoiding voltage instability while maintaining the capability for high luminance output when conditions are favorable
Solution Approach 2:
The system implements feedback by continuously monitoring voltage data between the second electrode and sensing electrode. When voltage fluctuations indicate capacitor faults, the feedback mechanism adjusts the operation mode or provides warnings, ensuring voltage stability is maintained while still enabling high luminance mode when capacitor performance is adequate
2Measurement precision
If the stabilization capacitor is faulty, then the voltage fluctuation increases, but the sensing reliability deteriorates
Solution Approach 1:
The sensor driving unit performs preliminary detection of voltage data in detection mode before conducting accurate sensing measurements. This preliminary voltage stability check identifies capacitor faults that would compromise measurement precision, allowing the system to flag potential issues before they affect actual sensing operations
Solution Approach 2:
The system uses feedback from voltage data monitoring to assess capacitor health and predict potential sensing reliability issues. When voltage fluctuations exceed acceptable thresholds, the feedback mechanism adjusts operation or provides warnings, maintaining sensing reliability by preventing operation under degraded capacitor conditions
3Reliability
If the sensor driving unit operates in detection mode continuously, then the capacitor fault detection is improved, but the power consumption increases
Solution Approach 1:
The sensor driving unit operates in detection mode periodically or at specific intervals rather than continuously. Voltage data is measured at predetermined timing points to assess capacitor health, providing adequate fault detection capability while minimizing power consumption by keeping the detection function inactive during normal operation periods
Solution Approach 2:
The system dynamically adjusts the operation mode of the sensor driving unit based on conditions. Detection mode is activated when capacitor health assessment is needed or when voltage fluctuations are detected, and deactivated during normal stable operation, optimizing the balance between fault detection capability and power consumption
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
The solution enhances sensing reliability and display quality by accurately determining capacitor faults and adjusting power supply voltage levels, ensuring consistent performance and higher luminance in different modes.
Implementation Method 1
a stabilization capacitor that controls the power supply voltage
Implementation Method 2
sensing voltage data obtained by measuring a voltage between the second electrode and the sensing electrode
Implementation Method 3
The display layer may emit light with higher luminance in the high luminance mode than in the normal mode
Data Source
AI summary
An electronic device is disclosed that includes a display layer, a display driving unit, a sensor layer, a power driving unit, and a stabilization capacitor. The display layer includes a first electrode, a light emitting layer, and a second electrode. The display driving unit drives the display layer. The sensor layer is disposed on the display layer and includes a sensing electrode. The sensor driving unit drives the sensor layer. The power driving unit provides a power supply voltage to the second electrode. The stabilization capacitor controls the power supply voltage. The sensor driving unit operates in a detection mode to sense voltage data obtained by measuring a voltage between the second electrode and the sensing electrode.