Display Panel Timing Control for Constant Signal Switching Intervals
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Solution Overview
Problem
The potential switching interval of control signals with opposite phases in display panels becomes too small as refresh frequency increases, leading to increased workload and reduced service life of switch devices.
Innovation Solution
A display panel design that includes a timing controller and a level conversion module, which uses a data enable signal to switch the potential of control signals in a vertical blanking interval, maintaining a constant switching interval regardless of refresh frequency, thereby preventing excessively short switching intervals and improving the service life of switch devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the refresh frequency is increased to improve display fluency, then the display response time is reduced, but the potential switching interval of control signals becomes too small, increasing the workload of switch devices
Solution Approach 1:
The patent applies preliminary action by performing the potential switching operation during the vertical blanking interval, which occurs before the next frame's active display period begins. The level conversion module is configured to switch the potential of control signals specifically during this blanking period, ensuring that switching is completed in advance before the switch devices need to handle the next frame's data, thus preventing workload accumulation during high refresh rates
Solution Approach 2:
The patent introduces a level conversion module as an intermediary component between the timing controller and the switch devices. This module mediates the control signal transmission by converting potential levels during the vertical blanking interval, thereby decoupling the high-frequency display refresh from the switch device operation frequency and reducing the direct workload on switch devices
2Productivity
If the potential switching interval is reduced to accommodate higher refresh rates, then the display fluency is improved, but the service life of switch devices is reduced due to increased workload
Solution Approach 1:
The patent implements periodic action by confining potential switching operations to occur only during the vertical blanking interval, which periodically occurs between successive frame periods. This rhythmic switching pattern allows switch devices to remain in stable states during active display periods while performing switching operations only during the periodic blanking intervals, thereby reducing cumulative workload and extending device service life
Solution Approach 2:
By performing potential switching in advance during the vertical blanking interval before the active display period begins, the system prepares control signals ahead of time. This preliminary switching action prevents switch devices from undergoing frequent rapid transitions during high refresh rate operation, thus protecting device reliability while maintaining high productivity
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes a timing controller and a level conversion module, the data enable signal output by the timing controller is used to control the level conversion module to switch the potential of the first control signal and the potential of the second control signal in the vertical blanking interval, and the potential switching interval of the two control signals does not change with the refresh frequency, which can prevent the potential switching interval of the two control signals from being too short.