OLED Screen Refresh Rate Switching to Prevent Luminance Jumping
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Solution Overview
Problem
The issue of luminance jumping or screen flickering occurs during refresh rate switching, particularly in OLED screens, especially in dark environments and when displaying low-grayscale images, affecting user experience and power consumption.
Innovation Solution
A method to dynamically switch the refresh rate based on ambient light and image grayscale, setting the refresh rate to high when in a dark and low-grayscale scenario to avoid luminance jumping, and to low in other scenarios to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the refresh rate is increased to improve display fluency, then the display fluency is improved, but the power consumption increases
Solution Approach 1:
The patent dynamically adjusts the refresh rate based on screen content characteristics and ambient light conditions. The system transitions from static refresh rate settings to dynamic adaptation, switching between 60Hz and 120Hz based on whether the displayed content is static or changing, thereby optimizing both display fluency and power consumption
Solution Approach 2:
The patent changes the refresh rate parameter according to different display scenarios. By analyzing screen content stability and ambient light levels, the system adjusts the refresh rate parameter to match actual display needs, achieving high fluency when necessary and power savings when not required
2Speed
If the refresh rate is switched from low to high in idle state, then the display fluency is improved, but luminance jumping occurs
Solution Approach 1:
The patent performs preliminary analysis of screen content characteristics and ambient light conditions before switching refresh rates. By pre-judging whether luminance jumping will occur based on current display content and lighting environment, the system avoids premature refresh rate changes that would cause visible luminance transitions
Solution Approach 2:
The system continuously monitors screen content changes and ambient light levels, using this feedback to determine the appropriate refresh rate. This closed-loop control prevents luminance jumping by only switching refresh rates when screen content or lighting conditions warrant the change
Data Source
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AI summary
Embodiments of this application provide a screen refresh rate switching method, an electronic device, and a computer-readable storage medium. The method includes: when a screen is in an idle state, setting, if a plurality of preset conditions are met, a refresh rate of the screen to a first refresh rate, where the plurality of preset conditions includes that a screen luminance is less than a preset screen luminance threshold, an ambient light luminance is less than a preset ambient light luminance threshold, and a proportion of low grayscale pixels of an image that is currently displayed on the screen is greater than a preset proportion, and the proportion of low grayscale pixels refers to a proportion of pixels in the image whose grayscale values are less than a preset grayscale threshold; and setting, if none of the plurality of preset conditions is met, the refresh rate of the screen to a second refresh rate, where the second refresh rate is less than the first refresh rate. The method provided in the embodiments of this application can solve the problem of luminance jumping of the screen and improve user experience.