Foldable Display Pixel Region Scaling and Power Management
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Solution Overview
Problem
Display devices with flexible boards, such as foldable and rollable displays, experience uneven pixel degradation across different regions, leading to visible boundaries and increased power consumption when in a folded state.
Innovation Solution
A display device with distinct pixel regions, where the second pixel region maintains a folded state with scaled images, the first pixel region displays unscaled images, and the third pixel region either displays a black image or remains inactive, with image updates and scan signal management to reduce power consumption and pixel degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If image is displayed in all pixel regions including folded state regions, then display coverage is improved, but pixel degradation becomes uneven and visible boundaries appear
Solution Approach 1:
The display panel is divided into multiple pixel regions (first pixel region, second pixel region, third pixel region) with different display configurations. The second pixel region in the folded state displays scaled images while the third pixel region displays black images or remains inactive, segmenting the display function across different areas to prevent uniform degradation patterns and visible boundaries.
2Adaptability or versatility
If image is displayed in second pixel region during folded state, then display functionality is maintained, but power consumption increases
Solution Approach 1:
Different pixel regions are assigned different display qualities and functions based on their location and state. The second pixel region displays scaled images to maintain functionality, while the third pixel region displays black images or remains inactive to reduce power consumption, applying local quality differentiation to balance functionality and energy efficiency.
Solution Approach 2:
Instead of displaying full-resolution images in all regions, the patent applies partial action by displaying scaled images in the second pixel region and black images or no images in the third pixel region during folded state, reducing overall power consumption while maintaining essential display functionality.
3Duration of action of moving object
If scan signals are supplied to all pixel regions during folded state, then image update is maintained, but power consumption increases
Solution Approach 1:
The patent implements periodic action by controlling the supply of scan signals to different pixel regions based on the folded state. During folded state, scan signals are selectively supplied to maintain image updates in active regions while reducing or stopping signals to inactive regions, creating a periodic pattern of signal supply that balances continuity and energy efficiency.
Data Source
AI summary
A display device including: a first pixel region including first pixels connected to a data line and first scan lines; a second pixel region in contact with the first pixel region at a first boundary and including second pixels connected to the data line and second scan lines; and a third pixel region in contact with the second pixel region at a second boundary and including third pixels connected to the data line and third scan lines, wherein the display device is configured to scale an image displayed in the second pixel region one or more times based on the second pixel region maintaining a folded state.