Tiled Display Cover Layer Curvature for Splice Distortion
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Solution Overview
Problem
Tiled display devices suffer from dark regions, image distortions, and color shifts near the splice regions, which degrade display quality due to the peripheral areas of the tiled panels.
Innovation Solution
The implementation of a tiled display device design where cover layers with specific height and thickness ratios are used to minimize the impact of dark regions, and a novel pixel arrangement that refracts light at equal angles to reduce rainbow patterns and image distortions, along with curved regions in the cover layers for optical compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two or more panels are tiled together to form a larger display region, then the display area is increased, but dark regions and image distortions appear near the splice regions
Solution Approach 1:
A cover layer is introduced as an intermediary component between the light source and the display medium. This cover layer includes a curved region that acts as an optical mediator to redirect and compensate for light paths, thereby eliminating dark regions and image distortions at the panel splice regions while preserving the enlarged display area
Solution Approach 2:
The cover layer incorporates a curved region with specific curvature radius rather than a flat surface. This curvature is designed to refract light at equal angles, compensating for the optical path differences caused by the tiled panel structure, thereby reducing image distortions and dark regions near the splice regions
2Object-affected harmful factors
If cover layers with curved regions are added to compensate for optical distortions, then display quality is improved, but device complexity increases
Solution Approach 1:
The cover layer serves multiple functions simultaneously: it protects the display medium, provides optical compensation for dark regions and distortions, and maintains structural integrity. By combining these functions into a single component rather than separate elements, the solution improves display quality without proportionally increasing device complexity
3Stability of the object's composition
If the height and thickness of cover layers are optimized to reduce dark region visibility, then display uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
Specific parameter ranges are defined for the cover layer dimensions: height H satisfies 0.05(Xn+Tn) < H < 0.5(Xn+Tn) and thickness Tn satisfies 0.05(Xn+Tn) < Tn < 0.5(Xn+Tn), where Xn is the distance from the light source to the cover layer. These parameter specifications optimize display uniformity while providing clear manufacturing guidelines to manage precision requirements
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 design significantly reduces the visibility of dark regions and improves display quality by minimizing image discontinuities and distortions, achieving a 'borderless' or 'full screen' display effect.
Implementation Method 1
a novel pixel arrangement that refracts light at equal angles to reduce rainbow patterns and image distortions
Data Source
AI summary
A tiled display device includes two panels and two cover layers respectively disposed on the two panels. The two cover layers include a contact region. A top portion and a bottom portion of the contact region have a height H. One of the two cover layers has a thickness Tn. One of the two panels has a distance Xn between an upper surface of the one of the two panels and the bottom portion of the contact region. The one of the two panels is corresponding to the one of the two cover layers. The height H, the thickness Tn and the distance Xn satisfy the equation: 0<H/(Xn+Tn)<0.8.