Local Refresh Display Method for OLED Panels
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Solution Overview
Problem
OLED panels face limitations in supporting full-screen high refresh rates due to peripheral hardware constraints, requiring reduced display resolution to achieve higher refresh rates.
Innovation Solution
A display method that performs full-screen display refresh at a first refresh rate while allowing local areas to be refreshed at a second, higher refresh rate, with a refresh factor that adjusts based on the need for the local area to move and maintain image retention in other areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If full-screen display refresh is performed at a higher refresh rate, then the refresh rate is improved, but the display resolution must be reduced due to peripheral hardware limitations
Solution Approach 1:
The display screen is divided into a first area (full-screen region) and a second area (local refresh region). The first area is refreshed at the first refresh rate while the second area is refreshed at the second refresh rate, which is higher than the first refresh rate. This segmentation allows different regions to operate at different refresh rates, enabling high refresh rate in specific areas without reducing overall display resolution.
Solution Approach 2:
Different refresh rates are applied to different regions of the display screen. The local area (second area) receives a higher refresh rate (second refresh rate) compared to the full-screen area (first area) which uses the first refresh rate. This local quality approach optimizes the refresh rate where needed while maintaining hardware compatibility elsewhere.
2Speed
If local area refresh is performed at a higher refresh rate, then the refresh rate in local area is improved, but image tearing may occur when the local refresh area moves
Solution Approach 1:
A refresh factor mechanism is implemented that periodically adjusts the refresh behavior. When the local refresh area needs to move, the refresh factor is increased to trigger a full-screen refresh at the first refresh rate, ensuring image consistency. This periodic intervention prevents image tearing while maintaining high refresh rates in local areas during stable periods.
Solution Approach 2:
The system monitors whether the local area refreshed at the second refresh rate needs to move. Based on this feedback, it dynamically adjusts the refresh strategy: if movement is detected, it performs full-screen refresh to prevent tearing; if no movement is detected, it continues with local refresh to maintain performance. This feedback-driven approach balances image stability with refresh performance.
Data Source
AI summary
A display method, including: performing a full-screen display refresh on a display panel at a first refresh rate; meanwhile, setting a refresh factor to n, where n is a positive integer; refreshing the local area of the display panel at the second refresh rate; increasing the refresh factor by m, where m is a positive integer; determining whether the refresh factor is greater than or equal to a set value; if yes, performing the full-screen display refresh on the display panel at the first refresh rate; setting the refresh factor to n; and if no, continuing refreshing the same local area of the display panel at the second refresh rate; increasing the refresh factor by m, where the second refresh rate is greater than the first refresh rate, and the second refresh rate is an integer multiple of the first refresh rate.