3D Light Emitter Package Layout for Oblique Light Blocking
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Solution Overview
Problem
Existing stereoscopic display systems face challenges in maintaining high-quality 3D images due to oblique light bypassing closely spaced package-polarizer sets, particularly as the demand for higher density package-polarizer sets increases, leading to reduced image quality.
Innovation Solution
The use of closely spaced packages with polarizers positioned above each package, where adjacent packages effectively block a significant portion of oblique light, maintaining image quality by ensuring a specific distance and orientation relationship between package edges and polarizer edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If package-polarizer sets are spaced closely to increase density, then productivity and device compactness improve, but oblique light bypasses polarizers reducing image quality
Solution Approach 1:
The patent introduces an opaque material as an intermediary element positioned between adjacent package-polarizer sets. This mediator blocks oblique light from bypassing the polarizers, thereby maintaining image quality even when packages are closely spaced. The opaque material acts as a light-blocking barrier that prevents cross-contamination of light between adjacent packages, resolving the contradiction between high density and image quality.
2Manufacturing precision
If high opacity material is added between package-polarizer sets to block oblique light, then image quality improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the opaque material with the existing package structure by positioning it within or between adjacent packages. Rather than adding a completely separate component system, the opaque material is integrated into the inter-package spacing, combining the light-blocking function with the structural arrangement. This reduces overall device complexity while achieving the desired image quality improvement.
3Manufacturing precision
If sufficient opaque material is included between adjacent package-polarizer sets to block oblique light, then image quality improves, but the space required between packages increases reducing density
Solution Approach 1:
The patent applies local quality by positioning opaque material specifically in the regions where oblique light bypass occurs - namely, in the spaces between adjacent package-polarizer sets. Rather than uniformly increasing spacing throughout the entire display, the opaque material is locally applied only where needed to block oblique light paths. This maintains high overall density while improving image quality in critical areas.
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 configuration effectively blocks at least 10% of oblique light, with preferred configurations blocking up to 30%, ensuring high-quality 3D images are maintained despite close spacing, even in high-density package-polarizer arrangements.
Implementation Method 1
polarizers that present different views to each eye of a viewer
Implementation Method 2
oblique light from adjacent package-polarizer sets does not overly reduce the quality of perceived 3D images
Data Source
AI summary
A stereoscopic display module includes an array of multiple light emitting packages, each of which is topped by a polarizer. Package-polarizer sets are closely spaced, such that at 10% of oblique light from a middle package-polarizer set is blocked by adjacent package-polarizer sets. In preferred embodiments 0.3h≤d≤0.7h, where h is the distance between the bottom of the polarizers and the bottom of the light emitters, and d, the distance between edges of adjacent light-emitting packages. Glass-On-Board (GOB) packages and Chip-On-Board (COB) packages are contemplated, with any suitable combination of color light emitters. Modules preferably include arrays of at least 9, 16, 32, 64, and 128 package-polarizer sets.