Foldable Display Luminance Adjustment via Folding Degree Mapping
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Solution Overview
Problem
Foldable electronic devices with curved displays experience luminance and color differences due to varying folding degrees, leading to degraded visibility and user inconvenience.
Innovation Solution
An electronic device and method that overlay an image with adjusted luminance on the curved portion based on the folding degrees of the housing structures, using a single display driver integrated circuit to minimize luminance differences and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a curved display is used in a foldable device, then the display area is enlarged and volume is reduced, but luminance and color differences occur due to folding degree variations
Solution Approach 1:
The patent applies local quality by dividing the display into different regions (curved portion and flat portion) and applying different luminance characteristics to each region. The curved portion is assigned a different luminance than the flat portion to compensate for the luminance differences caused by folding, thereby achieving overall luminance uniformity across the display surface.
Solution Approach 2:
The patent changes the luminance parameter of the curved display region based on the folding degree. By dynamically adjusting the luminance of the curved portion according to the detected folding angle, the system compensates for luminance variations and maintains consistent visual appearance across different folding states.
2Measurement precision
If multiple display driver integrated circuits are used to adjust luminance of specific areas, then luminance control precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the display control into different regions (curved and flat portions) that can be controlled independently. By dividing the display area into distinct controllable zones, the system achieves precise luminance control for the curved portion without requiring multiple separate display driver circuits, thus maintaining simplicity while improving control precision.
Data Source
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AI summary
In an electronic device and a method for operating the electronic device according to various embodiments, an electronic device may include a foldable housing including a hinge, a first housing connected to the hinge, and a second housing connected to the hinge and configured to be foldable with the first housing about the hinge, a display including a bent area in a state in which the first housing and the second housing are folded with respect to each other, a processor disposed in the first housing or the second housing and operatively connected to the display, and a memory operatively connected to the processor, and the memory may be configured to store instructions that, when executed, cause the processor to control the electronic device to: identify a folding degree between the first housing and the second housing, generate a first image based on mapping data in which the folding degree and characteristics of the first image are mapped, generate a synthetic image of the first image and a second image corresponding to the bent area wherein the generated first image is overlaid in at least a partial area of the second image, and display the generated synthetic image.