Display Panel Driving Circuit Switching Sub-Pixels to Prevent Burn-In
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Solution Overview
Problem
Current display technologies, such as OLEDs, face issues with 'burn-in' due to long-term display of the same image, which reduces the service life by causing material characteristic attenuation and differing current input leading to imprint, and existing solutions do not effectively address this problem.
Innovation Solution
A driving circuit with a switching mechanism that connects and disconnects sub-pixels from scan and data lines, allowing each sub-pixel to operate independently, thereby reducing the risk of burn-in by alternating between bright and dark states in every frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sub-pixels are continuously connected to scan lines and data lines for displaying the same image, then display function is maintained, but burn-in occurs due to material characteristic attenuation
Solution Approach 1:
The patent implements periodic switching of sub-pixel connections to scan lines and data lines. The switching circuit alternates which sub-pixels receive drive signals in different time periods, ensuring that no single sub-pixel continuously displays the same image content. This periodic action prevents material characteristic attenuation and burn-in by giving organic light-emitting materials rest periods, thereby extending display panel service life while maintaining reliable display function.
Solution Approach 2:
The patent introduces a dynamic switching mechanism that changes the connection state of sub-pixels to scan lines and data lines based on time and image content. Instead of static continuous connection, the switching circuit dynamically adjusts which sub-pixels are active, creating movement and variation in the display system. This dynamic operation prevents stagnation and material degradation, effectively combating burn-in while preserving display reliability.
2Device complexity
If the number of scan lines and data lines is reduced, then device complexity is reduced, but the ability to independently control sub-pixels is compromised
Solution Approach 1:
The patent makes scan lines and data lines multi-functional by enabling them to serve multiple sub-pixels at different time periods. A single scan line or data line can sequentially drive different sub-pixels, making the same physical line perform multiple functions. This universality reduces the total number of scan lines and data lines needed while the switching circuit ensures each sub-pixel still receives independent control signals when needed, maintaining adaptability with reduced complexity.
Solution Approach 2:
The patent adds a time dimension to the control mechanism, transforming spatial control (each sub-pixel having dedicated lines) into spatio-temporal control (sub-pixels sharing lines through time-multiplexed switching). By introducing temporal sequencing, the system achieves independent sub-pixel control capability without requiring dedicated physical lines for each sub-pixel, thus reducing device complexity while preserving control versatility.
Data Source
AI summary
The present application discloses a driving circuit, a driving method, and a display panel. The driving circuit includes: a plurality of pixels, each pixel including a first sub-pixel and a second sub-pixel; and a switching circuit, configured to communicate one or both of the first sub-pixel and the second sub-pixel with a scan line and a data line.