OLED Display Image Decay Compensation via Sensor Feedback

The patent applies preliminary action by pre-storing standard voltage or current signals corresponding to test images in the data compensation unit before actual display operation. When image decay is detected, these pre-stored standard signals are immediately compared with decayed signals to generate compensation signals, enabling rapid correction without requiring real-time recalibration or complex processing during normal operation.

The patent implements feedback through a closed-loop system where the sensor continuously monitors the display screen for decayed signals, the timing controller compares these signals with stored standard signals, and the system automatically generates and applies compensation signals to correct the decay. This creates a self-correcting mechanism that maintains display uniformity throughout the device's operational life.

The timing controller is designed to perform multiple functions: it generates test images, processes sensor signals, compares decayed signals with standard signals, generates compensation signals, and applies corrections to the display. By consolidating these functions into a single multi-functional controller rather than separate dedicated circuits for each function, the patent reduces overall system complexity while maintaining comprehensive decay compensation capability.

The display device performs self-diagnosis and self-correction through the integrated sensor and timing controller system. The sensor automatically detects decayed signals from the display screen, the timing controller autonomously compares these with stored standards, and the system self-generates compensation signals without requiring external intervention or complex processing systems, enabling the device to maintain itself.