Foldable Display Device Partial Mode Frame Period Control
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Solution Overview
Problem
Foldable and rollable display devices face delays and compromised image quality when switching between entire and partial display modes, affecting the efficiency of image output, especially for high-frame-rate applications like games and sports.
Innovation Solution
A display device with a processor that generates distinct image data for different display areas and frame periods, allowing the display driver to control the panel to display images in either a first mode using both areas or a second mode using only a portion, with a shorter frame period for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display device operates in entire display mode using both display areas, then the display area is maximized, but the image output rate decreases due to longer frame period
Solution Approach 1:
The display device dynamically switches between entire display mode and partial display mode based on the folded state. When the display panel is folded, the system transitions to partial display mode with a shorter frame period, optimizing the image output rate for the visible display area while minimizing the impact on overall productivity.
2Productivity
If the display device operates in partial display mode using only one display area, then the image output rate improves with shorter frame period, but the display area is reduced
Solution Approach 1:
The display device applies local quality by activating only the necessary display area based on the folded state. In partial display mode, only the first display area is activated with a shorter frame period to achieve higher image output rate, while the second display area remains inactive, optimizing performance for the visible portion.
3Area of stationary object
If the frame period is extended to display images in both display areas, then the entire display area is utilized, but delays occur in image display
Solution Approach 1:
The display device implements periodic action by using different frame periods for different display modes. In partial display mode, a shorter frame period is used to reduce delays and improve responsiveness, while in entire display mode, a longer frame period is accepted to maintain full display area utilization.
4Productivity
If the frame period is shortened to improve image output rate, then high-frame-rate content is displayed efficiently, but the display capability is limited to partial mode
Solution Approach 1:
The display device achieves universality by implementing multiple display modes (entire display mode and partial display mode) that can be selectively activated based on the folded state. This allows the system to provide both full display area capability and high image output rate capability, making it adaptable to different usage scenarios.
Data Source
AI summary
A display device and a method of driving same in which the display device includes: a display panel including first and second display areas; a processor to generate first image data corresponding to the first and second display areas in a first mode, and generate second image data corresponding to the first display area in a second mode; and a display driver to control the display panel to display an image corresponding to the first image data in the first and second display areas according to a first frame period in the first mode, and to display an image corresponding to the second image data in the first display area according to a second frame period in the second mode. The second frame period is shorter than the first frame period.