Liquid Crystal Display Fault Detection via Current Monitoring

The patent introduces a current detection unit as an intermediary component that measures current values flowing through the liquid crystal display device. This current measurement serves as an indirect indicator of internal faults such as partial peeling of ICs or breakage of liquid crystal panels, which cannot be directly detected by signal voltage-based methods. The current detection unit acts as a mediator that translates difficult-to-detect physical faults into measurable electrical current variations.

The patent replaces signal voltage-based detection mechanisms with a current-based detection system. By substituting the detection parameter from voltage to current, the system gains the ability to detect mechanical and physical faults (such as partial peeling and breakage) that were previously invisible to voltage-based measurement methods, while maintaining electrical measurement simplicity.

The patent implements a self-diagnosis function where the liquid crystal display device automatically detects its own faults through the current detection unit. The system monitors current values and compares them against predetermined thresholds to identify faults including partial peeling of ICs and liquid crystal panel breakage, enabling the device to self-detect and report conditions that were previously undetectable by external voltage-based methods.

The patent changes the detection parameter from signal voltage to current value. By monitoring current consumption patterns and comparing them against predetermined current values, the system can detect subtle faults such as partial peeling of ICs or liquid crystal panel breakage. This parameter change enables detection of faults that do not significantly affect voltage but do affect current flow characteristics.

The patent merges the fault detection function with the existing liquid crystal display device structure by integrating the current detection unit into the display device itself. This consolidation combines the display function and fault detection function into a single integrated system, eliminating the need for separate complex detection systems while maintaining comprehensive monitoring capabilities for vehicle safety applications.

The patent implements self-diagnosis functionality where the liquid crystal display device autonomously monitors its own health status through current measurement. The device automatically compares detected current values against predetermined thresholds and reports faults without requiring external intervention, simplifying the overall system architecture while ensuring reliable operation in vehicle monitoring applications.