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 demand increases for higher density package-polarizer configurations.
Innovation Solution
The use of closely spaced packages with polarizers that block at least 10% of oblique light, preferably 20% or more, by employing a ratio of 0.3h≤d≤0.7h between the distance between the bottom of the polarizers and the edges of adjacent light-emitting packages, using transparent or opaque side walls, and polarizers oriented differently for adjacent sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high opacity material is added between package-polarizer sets to block oblique light, then 3D image quality is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent removes the high opacity material filler from between package-polarizer sets, extracting the problematic element that caused manufacturing complexity while maintaining 3D image quality through optimized package spacing and polarizer orientation
Solution Approach 2:
The patent changes the spacing parameter between packages from wide spacing (requiring filler material) to close spacing (0.3h≤d≤0.7h), where the reduced distance allows polarizers to effectively block oblique light without requiring additional opaque materials
2Productivity
If package-polarizer sets are spaced closely to increase density, then productivity and display resolution are improved, but oblique light interference increases reducing 3D image quality
Solution Approach 1:
The patent addresses the spacing problem by introducing polarizer orientation as a new dimensional parameter. By orienting polarizers at different angles for adjacent packages, the system blocks oblique light in the angular dimension while maintaining close spatial spacing, thus increasing density without sacrificing image quality
3Object-affected harmful factors
If high opacity material is used to block oblique light, then light blocking effectiveness is improved, but the amount of material required becomes impractical for closely spaced packages
Solution Approach 1:
The patent converts the close spacing between packages, which originally caused oblique light interference, into a beneficial arrangement where adjacent packages and their polarizers mutually block oblique light. The harmful oblique light paths are converted into useful blocking relationships between neighboring components
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 reduces oblique light interference, ensuring high-quality 3D image perception despite close spacing, suitable for various display devices including billboards and LED screens.
Implementation Method 1
polarizers that block at least 10% of oblique light
Implementation Method 2
adjacent package-polarizer sets blocked at least 10% of oblique light from set to set
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.