Display Panel Driving for Tri-Gate 120 Hz Switching
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Solution Overview
Problem
Existing frequency-doubling drive technology cannot be applied to display panels with tri-gate drive architecture, limiting them to 60 Hz mode and preventing high refresh rate display.
Innovation Solution
A display panel driving method that reconstructs an input video signal with a low frame rate into a high frame rate signal, allowing display panels with different drive architectures to switch from 60 Hz to 120 Hz without hardware changes by controlling the gate and source drive circuits to output scan and video signals at the higher refresh rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If tri-gate drive architecture is adopted to reduce source drive chips from 12 to four, then cost is reduced, but frequency-doubling drive technology cannot be applied and high refresh rate display is prevented
Solution Approach 1:
The patent changes the driving parameters by implementing a frequency-doubling drive method that operates the tri-gate drive architecture at 120 Hz instead of the conventional 60 Hz. This involves doubling the refresh rate parameter and adjusting the scanning and data signal timing accordingly, allowing the same hardware architecture to achieve higher performance without modification
Solution Approach 2:
The patent introduces dynamic control mechanisms that enable the display panel to switch between different driving modes (60 Hz and 120 Hz). The gate drive circuit and source drive circuit are dynamically adjusted to accommodate the frequency-doubling operation, with scanning signals and data signals being timed differently based on the selected refresh rate
2Productivity
If existing frequency-doubling drive technology is used, then high refresh rate display can be achieved, but it cannot be applied to display panels with different drive architectures
Solution Approach 1:
The patent creates a universal frequency-doubling drive method that can be applied to multiple drive architectures including tri-gate, 1G1D, and other configurations. The method uses generalizable techniques such as signal interpolation, frame repetition, and timing adjustment that are architecture-agnostic, allowing the same frequency-doubling approach to work across different display panel designs
Solution Approach 2:
The patent segments the video signal processing into distinct stages: original signal reception, signal interpolation to generate intermediate frames, frame repetition to double the refresh rate, and output to the display panel. This segmentation allows the frequency-doubling function to be implemented as a separate processing layer that can interface with different drive architectures without requiring architecture-specific modifications
Data Source
AI summary
A display panel driving method and a display device are provided. The display panel driving method includes: receiving a refresh rate switching instruction, where the refresh rate switching instruction is configured to control a display panel to switch from a first refresh rate to a second refresh rate; causing an input first video signal with a first image resolution and a first frame rate to be generated into a second video signal with a second image resolution and a second frame rate according to the refresh rate switching instruction; and outputting a scan driving signal corresponding to the second refresh rate and the second video signal to a plurality of pixels of the display panel.