Display Edge Emission Compensation via Pixel Reorientation
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Solution Overview
Problem
Conventional displays face challenges in minimizing or eliminating the display border, leading to image distortion and a curved appearance at the edges due to the curvature of the display module, which affects the viewer's perception of a seamless image.
Innovation Solution
The implementation of edge emission compensation techniques, including the use of a guide plate and structural reorientation of pixels, to redirect light from peripheral pixels toward the display normal, effectively reducing or eliminating the display border by using a combination of optical and structural means such as coherent guide plates, banked surfaces, and photonic crystal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display module is curved to minimize the display border, then the display border is reduced, but image distortion and curved appearance occur at the edges
Solution Approach 1:
The patent applies different structural configurations to different regions of the display module. Peripheral pixels are positioned at different orientations relative to the display normal compared to central pixels. This local variation in pixel orientation compensates for the curvature effect at edges while maintaining the curved design for border reduction.
Solution Approach 2:
The patent introduces asymmetric pixel arrangement where pixels at the periphery are oriented at angles relative to the display normal, while central pixels remain symmetrically aligned. This asymmetric configuration corrects the image distortion caused by curvature without requiring a flat display surface.
2Manufacturing precision
If peripheral pixels are oriented at an angle relative to the display normal, then image fidelity is improved at edges, but device complexity increases
Solution Approach 1:
The patent implements a dynamic pixel orientation scheme where the angle of peripheral pixels is adjusted based on their position relative to the display normal. This dynamic adaptation allows optimal image fidelity at each location while maintaining a systematic pattern that can be manufactured using conventional techniques.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for a borderless display experience, where the image appears flat and continuous to the viewer, reducing the visibility of the display border and maintaining image fidelity by accurately mapping peripheral pixels to the main display plane, even when the display module is curved.
Implementation Method 1
a guide plate configured to redirect light from the peripheral pixels toward the normal of the display
Implementation Method 2
photonic crystal structures
Data Source
AI summary
A display includes a cover having a front face that defines a normal of the display and further having a sidewall that meets the front face to define an edge of the display, and a display module disposed behind the cover. The display module includes a substrate and a plurality of pixels supported by the substrate. The substrate includes a curved portion along the edge, the curved portion bending rearward such that peripheral pixels of the plurality of pixels are disposed laterally between the substrate and the sidewall. The display further includes edge compensation means for compensating for a curvature of the curved portion to direct light from the peripheral pixels toward the normal of the display. An extent to which the edge compensation means compensates for the curvature varies in accordance with lateral position of the peripheral pixels along the curved portion.