Light-Emitting Element Orientation for Wide-Angle Color Viewing
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Solution Overview
Problem
Large light-emitting displays experience inconsistency in color and intensity when viewed from different angles, leading to shifting color and intensity as the viewer's gaze angle changes.
Innovation Solution
A system comprising light emitting elements arranged in a predetermined pattern on a substrate, with alternating primary and complementary orientations, ensuring uniform pitch and spacing to minimize color shift across the viewing plane, utilizing a combination of red, green, and blue light emitting devices to produce a consistent color spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large light emitting display is used to provide a large viewing plane, then the display can deliver a compelling visual experience to viewers, but the viewer must shift their gaze angle to take in the entirety of the viewing plane, which causes shifting color and intensity
Solution Approach 1:
The patent applies local quality by orienting individual light emitting elements in different directions based on their location on the display. Elements are categorized into first orientations (e.g., upward and downward facing) and second orientations (e.g., leftward and rightward facing). This localized differentiation ensures that each element emits light optimally toward the central viewing position, maintaining color consistency across the entire large viewing plane regardless of the viewer's gaze angle.
2Area of stationary object
If light emitting elements are arranged in a predetermined pattern to create a large viewing plane, then the display area is increased, but color and intensity shift when viewed from different angles
Solution Approach 1:
The patent implements local quality by assigning different orientations to light emitting elements based on their specific locations. First orientation elements (upward and downward facing) and second orientation elements (leftward and rightward facing) are distributed across the viewing plane according to a predetermined pattern. This ensures that each local region contributes to color stability from its optimal emission direction, maintaining overall color stability across the entire large area.
Solution Approach 2:
The patent segments the light emitting elements into distinct orientation groups (first orientation and second orientation elements). This segmentation allows each group to be optimized for its specific emission direction, with upward/downward facing elements handling vertical viewing angles and leftward/rightward facing elements handling horizontal viewing angles, thereby maintaining color stability across diverse viewing conditions.
3Adaptability or versatility
If the display is made large enough to require gaze angle shifting, then more viewers can be accommodated, but wider changes in gaze angle produce greater shifts in color and intensity
Solution Approach 1:
The patent applies local quality by directing light emission from different parts of the display toward the central viewing position. Upward and downward facing elements emit toward the center from vertical extremes, while leftward and rightward facing elements emit toward the center from horizontal extremes. This localized directional control ensures that even when viewers shift their gaze across large angles, each element contributes to consistent color perception from its optimal direction.
Solution Approach 2:
The patent inverts the conventional approach by having light emitting elements face toward the center of the display rather than outward perpendicular to the surface. This inversion ensures that light is emitted in directions that converge on the central viewing position, maintaining color consistency even when viewers accommodate large viewing areas by shifting their gaze angles.
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
The solution significantly reduces color shift with changing view angles, maintaining color consistency and intensity across the entire viewing plane, enhancing the visual experience by providing improved wide-angle color viewing capabilities.
Implementation Method 1
Each light emitting element comprises a plurality of light emitting devices, said light emitting devices disposed within each light emitting element in a predetermined pattern, each of said light emitting devices operative to produce a color
Data Source
AI summary
Disclosed are embodiments of apparatus and methods that provide light emitting displays with improved wide angle color viewing. A plurality of light emitting elements is arranged in a predetermined pattern and collectively creates a viewing plane. A portion of the light emitting elements are disposed in a primary orientation while the remainder of the light emitting element are disposed in a complementary orientation. Each light emitting element in a primary orientation is adjacent to a light emitting element in the complementary orientation. The spatial light emission pattern of the primary orientation is complementary to the spatial light emission pattern of the complementary orientation. Adjacent pairs of primary-complementary oriented light emitting elements cancel a substantial amount of color variation that would otherwise be seen when one varies the gaze angle upon the viewing plane.