Spherical Display Substrate Layout to Reduce Wide-Angle Color Shift
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Solution Overview
Problem
Spherical light-emitting diode display apparatuses face high development costs and color shift issues due to fixed light-emitting element substrate arrangements, affecting display quality from large viewing angles.
Innovation Solution
The display apparatus employs light-emitting element substrates spliced into a sphere with dummy latitudes and meridians, featuring pixel structures arranged along specific reference lines to alleviate misalignment and color shift, using bases with N-gonal shapes and alternating pixel structures to improve viewing angle performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light-emitting element substrates are arranged in a fixed sequence for spherical display, then the display apparatus can be constructed with standardized substrates, but color shift occurs at large viewing angles affecting display quality
Solution Approach 1:
The patent applies asymmetry by arranging pixel structures with different orientations in different regions of the substrate. Specifically, pixel structures in different areas are rotated at different angles relative to the substrate edges, creating an asymmetric arrangement that compensates for viewing angle-dependent color shifts when the sphere is assembled. This allows standardized substrates to be used while maintaining display quality across large viewing angles.
2Manufacturing precision
If multiple different light-emitting element substrates are used for spherical display, then display quality can be maintained, but development costs increase significantly
Solution Approach 1:
The patent applies universality by designing a single type of light-emitting element substrate that can be used for all positions on the spherical display. The substrate is designed with pixel structures that can be oriented in multiple directions, allowing the same substrate design to function correctly regardless of its position on the sphere. This eliminates the need for multiple different substrate designs and reduces development costs while maintaining display quality.
Solution Approach 2:
The patent applies parameter changes by varying the orientation angles of pixel structures within the same substrate design. Instead of creating different substrates for different positions, the invention changes the rotational parameter of the pixel structures on a single substrate type to adapt to different positions on the sphere, thereby reducing complexity and cost.
3Ease of manufacture
If pixel structures are arranged in fixed orientations on substrates, then manufacturing is simplified, but color shift occurs when viewed from large angles
Solution Approach 1:
The patent resolves this contradiction by implementing asymmetric orientation of pixel structures. While each individual substrate maintains a fixed manufacturing pattern, the pixel structures are deliberately oriented at different asymmetric angles in different regions of the substrate. When the sphere is assembled, this asymmetric arrangement ensures that pixels across different viewing angles maintain correct color alignment, eliminating color shift while keeping manufacturing relatively simple.
Data Source
AI summary
A display apparatus includes light-emitting element substrates. The light-emitting element substrates are spliced into a sphere. Each of the light-emitting element substrates includes a base and pixel structures. The light-emitting element substrates include a first light-emitting element substrate. The base of the first light-emitting element substrate is in an N-gonal shape. N is a positive integer greater than 4. A first edge and a second edge of the N-gonal shape are substantially parallel to two dummy meridians of the sphere respectively. A dummy reference line is located between the first edge and the second edge and is not parallel to the first edge and the second edge. The pixel structures of the first light-emitting element substrate include a pixel structure group. The light-emitting elements of the pixel structures of the pixel structure group are substantially arranged along a direction parallel to the dummy reference line.