Display Panel Brightness Switching With Flicker-Smoothing Transition Frames
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Solution Overview
Problem
Display panels experience significant screen flicker when switching between brightness adjustment modes due to abrupt changes in display and light emission duty cycles, leading to fluctuations in display brightness and impaired display effect.
Innovation Solution
A display control method and device that adjusts the display and light emission duty cycles of transition frames to match the previous and target brightness adjustment modes, ensuring consistent threshold voltage drifts of drive transistors, thereby reducing brightness differences and flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel switches between brightness adjustment modes (DC and PWM), then the display brightness can be adjusted according to different display requirements, but the display brightness varies significantly causing screen flicker
Solution Approach 1:
The patent applies preliminary action by calculating and preparing transition duty cycles before the actual mode switching occurs. The control method computes the transition duty cycle based on the last frame's duty cycle in the current mode and the first frame's duty cycle in the target mode, then uses this pre-calculated value to guide the smooth transition, preventing abrupt brightness changes and screen flicker.
Solution Approach 2:
The patent changes the duty cycle parameter gradually during mode switching instead of making an abrupt change. By introducing a transition duty cycle that is different from both the original and target duty cycles, and by adjusting the display refresh rate during transition, the patent achieves a smooth parameter transition that eliminates screen flicker while maintaining brightness adjustment versatility.
2Stability of the object's composition
If the display refresh rate is increased during mode switching, then the transition smoothness is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the display refresh rate adjustable and adaptive during mode switching. Instead of using a fixed high refresh rate, the system dynamically selects appropriate refresh rates for different frames during the transition process, balancing smoothness requirements with power consumption constraints.
Solution Approach 2:
The patent changes the display refresh rate parameter during mode switching to achieve smooth transitions. By adjusting the refresh rate dynamically during the transition phase and then returning to the normal refresh rate after switching, the system improves transition smoothness while minimizing the impact on overall power consumption.
Data Source
AI summary
Provided are a display control method and device for a display panel, a storage medium, and a display device. The display control method for the display panel includes: in response to a brightness adjustment mode of the display panel being switched, acquiring a first display and light emission duty cycle of the last frame in a current brightness adjustment mode and a second display and light emission duty cycle of the first frame in a brightness adjustment mode to which the display panel is to be switched; determining, according to the first display and light emission duty cycle and the second display and light emission duty cycle, a display and light emission duty cycle of each of at least two transition display frames inserted in a brightness switching process; and controlling the display panel to switch the brightness adjustment mode.