Detection Circuit for Electronic Device Signal Reliability
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Solution Overview
Problem
Existing electronic devices may malfunction when signal waveforms or timing are abnormal, leading to undesired functions, necessitating real-time detection to prevent malfunctions.
Innovation Solution
An electronic device equipped with a detection circuit that includes programming, light-emitting detection circuits, and a determining circuit to analyze scan, reset, and light-emitting enable signals, determining whether to output these signals to the driving circuit based on detection signals, thereby identifying and preventing abnormal signal outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time signal detection is implemented to prevent malfunctions, then device reliability is improved, but device complexity increases due to additional detection circuits
Solution Approach 1:
The patent merges the detection circuit functions with the existing driving circuit by sharing common signal lines and control structures. The detection circuit reuses the scan signal, reset signal, and light-emitting enable signal lines that already exist in the driving circuit, thereby implementing real-time detection without adding completely separate circuitry. This merging approach improves reliability through detection while minimizing the increase in device complexity.
Solution Approach 2:
The detection circuit is designed with multi-functionality to reduce overall system complexity. The same detection circuit structure can detect multiple different signals (scan signal, reset signal, light-emitting enable signal) at different stages. The determination circuit can identify various types of abnormalities including waveform issues, timing problems, and signal level deviations, making the detection system universal rather than requiring separate dedicated detectors for each function.
2Measurement precision
If multiple detection circuits are added to detect different signals, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The detection process is segmented into distinct stages: a first detection stage that monitors signals during the programming phase, and a second detection stage that monitors signals during the light-emitting phase. Each stage has its own detection circuit configuration optimized for that specific phase. This segmentation allows precise detection of phase-specific abnormalities without requiring all detection circuits to operate simultaneously, thereby improving measurement precision while controlling device complexity.
Solution Approach 2:
The patent introduces an intermediate determination circuit that acts as a mediator between the multiple detection circuits and the driving circuit. Instead of having multiple independent detection circuits directly controlling the driving circuit, the determination circuit consolidates their outputs and makes the final decision on whether to block signal output. This intermediary structure improves measurement precision by combining multiple detection perspectives while reducing device complexity by providing a single decision point.
Data Source
AI summary
An electronic device is provided. The electronic device includes a detection circuit. The detection circuit includes a programming detection circuit, a light-emitting detection circuit and a determining circuit. The programming detection circuit receives a scan signal, a reset signal and a light-emitting enable signal for a driving circuit of a pixel unit, and provides a first detection signal in a first stage according to the scan signal, the reset signal and the light-emitting enable signal. The light-emitting detection circuit receives the scan signal, the reset signal and the light-emitting enable signal, and provides a second detection signal in a second stage according to the scan signal, the reset signal and the light-emitting enable signal. The determining circuit determines whether to output the light-emitting enable signal to the driving circuit according to the first detection signal and the second detection signal.