Display Device Driving Unit Wiring Defect Detection
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Solution Overview
Problem
Existing display devices require disassembly to diagnose and repair wiring defects, which can lead to additional damage and make it difficult to identify the original defect, and there is a need for a method to detect wiring defects without disassembly.
Innovation Solution
A display device with a driving unit that includes an analog-digital converter and a register to generate and process test signals, allowing for the detection of voltage levels of control signals without disassembly, using test gate and data signals transmitted to gate and data lines farthest from the middle of the display panel, and a selector to reduce the number of input terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If disassembly is performed to diagnose wiring defects, then defect detection capability is improved, but device complexity and risk of additional damage increase
Solution Approach 1:
The patent applies preliminary action by incorporating test signal generation and voltage level detection capabilities directly into the driving unit before any defect diagnosis is needed. The analog-digital converter and register are pre-configured to capture and store voltage level information from test signals, enabling defect detection without requiring disassembly or complex external testing equipment.
2Ease of repair
If disassembly is performed to repair wiring defects, then repair accessibility is improved, but additional damage risk increases
Solution Approach 1:
The patent implements feedback by using the detected voltage level information to identify the location and nature of wiring defects. The register stores the voltage level data from the analog-digital converter, providing feedback that enables precise defect localization. This allows repair personnel to target specific defective areas without unnecessary disassembly, reducing the risk of additional damage while maintaining repair accessibility.
3Measurement precision
If all control signals are monitored for defect detection, then measurement completeness is improved, but device complexity increases
Solution Approach 1:
The patent applies the extraction principle by selecting and monitoring only the most critical control signals that provide sufficient information for defect detection. Rather than monitoring all control signals simultaneously, the system extracts key voltage level information from representative signals, reducing processing complexity while maintaining measurement completeness for effective defect diagnosis.
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
Enables easy detection of wiring defects within the display device without disassembly, preventing additional damage and simplifying the defect analysis and repair process, while maintaining a high probability of detecting defects.
Implementation Method 1
a driving unit that generates control signals for controlling the display panel, wherein the display panel receives the control signals and outputs the control signals as test control signals, and the driving unit includes an analog-digital converter to which the test control signals are input, and includes a register that stores signal levels detected by the analog-digital converter
Data Source
AI summary
A display device includes a display panel, and a driving unit that generates driving signals for driving the display panel. The display panel receives the driving signals and outputs the driving signals as test driving signals. The driving unit includes an analog-digital converter to which the test driving signals are input, and includes a register that stores signal levels detected by the analog-digital converter.