Quad-Curved Display Corner Layout for Wrinkle-Free Full Screen
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Solution Overview
Problem
Quad-curved screens experience wrinkling and bubbling due to Gaussian surface stresses, leading to reduced screen-to-body ratio and abnormal images, when Gaussian surfaces are cut off to prevent these issues.
Innovation Solution
A display device with a middle frame featuring a main display module and functional elements, including a first opening at the junction of curved display areas, and an auxiliary display module covering these elements to utilize space and maintain a full-screen display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Gaussian surfaces are cut off in quad-curved screen, then wrinkling and bubbling are prevented, but screen-to-body ratio is reduced and space availability is significantly reduced
Solution Approach 1:
The display screen is segmented into multiple curved display areas (first, second, third, and fourth curved display areas) that are connected at junctions. By dividing the screen into separate curved sections rather than using continuous Gaussian surfaces, the patent prevents wrinkling and bubbling while maintaining the quad-curved aesthetic and maximizing screen-to-body ratio.
Solution Approach 2:
The patent transitions from traditional 2D flat displays to 3D quad-curved displays by extending the display areas along multiple directions (first direction and second direction intersecting the first direction). This dimensional transformation allows the screen to wrap around the device edges while avoiding Gaussian surface issues through strategic junction placement.
2Reliability
If Gaussian surfaces are cut off to prevent wrinkling, then display reliability is improved, but the four fillet areas show abnormal images and space availability is reduced
Solution Approach 1:
The display is divided into multiple curved display areas with defined junctions where openings are formed. This segmentation allows each curved area to be independently optimized for display quality while the openings at junctions prevent stress accumulation that causes abnormal images in fillet areas.
Solution Approach 2:
Different regions of the display are treated differently: the curved display areas maintain full display functionality with high quality images, while the junction areas with openings are specifically designed to relieve stress and prevent abnormal images, allowing each region to have optimized local properties.
3Reliability
If openings are formed at junctions of curved display areas, then Gaussian surface stresses are prevented and wrinkles are avoided, but functional space is lost
Solution Approach 1:
The openings at the junctions serve multiple functions: they relieve Gaussian surface stresses to prevent wrinkles, they define the boundaries between curved display areas, and they provide functional spaces for housing cameras, buttons, sensors, or other device components. This multi-functionality transforms what would be wasted space into valuable functional areas.
Solution Approach 2:
The openings act as intermediary zones between adjacent curved display areas, mediating the stress transitions and providing transition spaces that accommodate functional elements. These intermediary regions prevent direct stress transmission between curved areas while maintaining overall display integrity.
Data Source
AI summary
A display device includes a middle frame; a main display module being disposed on the middle frame and including a first curved display area and a second curved display area, wherein a junction of the first curved display area and the second curved display area is formed with a first opening; and a functional element disposed on the middle frame and in the first opening.