Polarized LED Encapsulation for Low-Ghosting 3D Displays
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Solution Overview
Problem
Current stereoscopic display systems face challenges in providing a wide range of 3D viewing experiences outside traditional movie theater environments, such as billboards and large display devices, due to limitations in segregating viewing channels effectively without causing viewer discomfort like headaches.
Innovation Solution
The method involves manufacturing polarized light emitting semiconductor packages with alternating polarizing elements and bonding solutions to create encapsulated semiconductor packages that can be arranged in specific patterns for 3D displays, using either reactive or non-reactive bonding solutions, and incorporating diffusers to enhance the 3D effect and reduce glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If color-coded views are projected for each eye, then stereoscopic viewing is achieved, but viewer discomfort and headaches occur
Solution Approach 1:
The patent applies color-coded polarizing filters (red and cyan) to separate viewing channels for each eye. The left eye receives light through a red polarizing filter while the right eye receives light through a cyan polarizing filter, enabling stereoscopic viewing without causing viewer discomfort or headaches that occurred with earlier color-based approaches.
Solution Approach 2:
The invention combines polarizing filters with specific color properties (red and cyan) to create composite optical elements that simultaneously provide polarization for channel separation and color filtering for comfortable viewing. This composite approach resolves the contradiction by integrating multiple functions into single components.
2Ease of manufacture
If polarizing elements are disposed directly on light emitting elements, then manufacturing is simplified, but viewing quality and reduction of ghosting artifacts deteriorate
Solution Approach 1:
The patent introduces an intermediary clear encapsulating material that is disposed between the light emitting element and the polarizing element. This intermediary layer serves multiple functions: it maintains proper spacing and alignment, protects the polarizing element, and enhances viewing quality by reducing ghosting artifacts while not complicating the manufacturing process significantly.
Solution Approach 2:
The clear encapsulating material functions as a thin film or shell that encapsulates the light emitting element and supports the polarizing element. This flexible approach allows for easy manufacturing while maintaining precise optical alignment and high viewing quality.
3Manufacturing precision
If encapsulating material is used between light emitting and polarizing elements, then viewing quality improves, but manufacturing complexity increases
Solution Approach 1:
The clear encapsulating material performs multiple functions simultaneously: it acts as an optical medium to reduce ghosting artifacts, provides mechanical support and alignment for the polarizing element, and serves as a protective barrier. This multi-functionality improves viewing quality without proportionally increasing manufacturing complexity.
4Ease of operation
If alternating patterns of polarized light emitting packages are created, then realistic 3D viewing experience is achieved, but device complexity increases
Solution Approach 1:
The display is segmented into alternating columns or rows of polarized light emitting packages, where adjacent segments emit light with different polarization directions (horizontal and vertical). This segmentation creates distinct viewing channels for each eye, enabling realistic 3D viewing experience while maintaining a relatively simple overall device structure.
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 approach enables a realistic 3D viewing experience on various devices by creating distinct viewing channels for each eye, reducing ghosting artifacts and glare, and allowing for both 2D and 3D content display on larger screens like stadium screens and movie theaters.
Implementation Method 1
A first energy is applied to polymerize the first bonding solution, thereby encapsulating the first polarizing element and a first light emitting element in a first semiconductor package
Data Source
AI summary
The present invention provides systems, and methods for manufacturing polarized light emitting semiconductor packages, comprising the disposition of a first bonding solution about (a) a first light emitting element and (b) a first polarizing element, wherein the first polarizing element transmits linearly polarized light in a first directionality. A first energy is applied to polymerize the first bonding solution, thereby encapsulating the first polarizing element and a first light emitting element in a first semiconductor package. A second bonding solution is disposed about (a) a second light emitting element and (b) a second polarizing element, wherein the second polarizing element transmits polarized light in a second directionality different from the first directionality, and a second energy is applied to polymerize the second bonding solution, thereby encapsulating the second polarizing element and the second light emitting element in a second semiconductor package.