Flexible Display Correcting Layer for Color Consistency
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Solution Overview
Problem
Flexible display panels with curved surfaces face challenges in maintaining color consistency between flat and curved regions due to differing angles of view and optical distances, leading to perceived color differences between these areas.
Innovation Solution
A flexible display apparatus with a substrate featuring a flat and curved surface portion, incorporating a correcting layer with varying thickness and curvature in the curved region to align the user's line of sight with emitted light, reducing color differences by adjusting the angle and curvature of the correcting layer across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved surface portion is formed in the flexible display panel, then the display can be bent and adapted to various shapes, but color inconsistency occurs between flat and curved regions due to differing angles of view and optical distances
Solution Approach 1:
The patent introduces a correcting layer with spatially varying thickness in the curved region. The thickness is greater at peripheral areas compared to the center, creating local optical compensation that adjusts the angle of view and optical distance differences between flat and curved regions, thereby achieving color consistency across the display surface.
Solution Approach 2:
The correcting layer changes the optical parameters (thickness, refractive path) in the curved region to compensate for the geometric distortions. By varying the thickness parameter of the correcting layer across different positions, the patent adjusts the optical path length to maintain consistent color perception despite the curved geometry.
2Ease of manufacture
If the correcting layer has uniform thickness, then manufacturing is simplified, but it cannot effectively correct color differences across the curved region
Solution Approach 1:
The correcting layer is designed with non-uniform thickness, being thicker at peripheral regions and thinner at the center. This local variation in thickness is specifically tailored to compensate for the greater optical path differences that occur at the edges of curved regions compared to the center, achieving precise color correction across the entire display surface.
3Area of stationary object
If the display region above the curved surface is made larger, then more display area is available, but color inconsistency becomes more pronounced due to increased variation in viewing angles
Solution Approach 1:
The correcting layer is specifically configured for the curved region with a thickness profile that increases from the center toward the periphery. This local optimization allows the curved display region to be expanded while maintaining color uniformity, as the correcting layer compensates for the increasing viewing angle variations that occur at larger display dimensions.
Data Source
AI summary
A flexible display apparatus including a substrate including a flat surface portion and at least one curved surface portion, and a display including a first display region above the flat surface portion and a second display region above the at least one curved surface portion. The second display region includes a correcting layer including a first point and a second point apart from each other. The second point is farther away from the first display region than the first point. A thickness of the correcting layer at the second point is greater than a thickness of the correcting layer at the first point. The correcting layer includes a curved portion between the first point and the second point.