Curved Display Screen With Variable Pixel Density
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Solution Overview
Problem
Curved display screens face challenges in attachment to glass covers due to wrinkling and bubble issues at the corners, primarily because of uniform pixel density leading to inadequate stretchability and brightness differences between flat and curved areas.
Innovation Solution
A curved display screen design with a flat area and a curved area around it, featuring a lower pixel density in the curved area to enhance stretchability, combined with a driving method that adjusts the driving current to match the brightness of the curved area with the flat area, and a transition area to smoothly transition pixel density and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform pixel density is used in the curved display area, then manufacturing simplicity is maintained, but the display screen cannot be properly attached to the curved cover due to wrinkling and bubble issues
Solution Approach 1:
The patent applies different pixel densities to different regions of the curved display screen. Specifically, the corner areas have lower pixel density while the edge areas maintain higher pixel density. This local differentiation allows the corner regions to stretch more easily during curving without wrinkling, while maintaining display quality in the edge regions, thus resolving the contradiction between manufacturing simplicity and attachment quality.
2Reliability
If pixel density is reduced in the curved display area, then stretchability and attachment quality improve, but brightness uniformity deteriorates due to visible boundaries between flat and curved areas
Solution Approach 1:
The patent implements a transition area between the flat display area and the curved display area, where the pixel density gradually changes from high to low. This gradual transition prevents abrupt brightness changes and visible boundary lines, thereby maintaining brightness uniformity while still achieving the stretchability needed for proper attachment to the curved cover.
3Reliability
If the curved display area is stretched to fit the cover, then attachment quality improves, but pixel density distribution becomes non-uniform affecting display quality
Solution Approach 1:
The patent pre-distributes pixels with non-uniform density during the manufacturing process, with lower pixel density in corner areas and higher pixel density in edge areas. This preliminary arrangement ensures that when the display screen is stretched during curving, the pixels distribute evenly across the curved surface, maintaining display quality while achieving proper attachment without wrinkles or bubbles.
Data Source
AI summary
The present disclosure provides a curved display screen and an electronic apparatus. The curved display screen includes a flat display area; and a curved display area, wherein the curved display area is arranged around the flat display area, and a pixel density in at least one part of the curved display area is lower than a pixel density in the flat display area.