Light Emitting Apparatus Biased Intensity Distribution
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Solution Overview
Problem
Existing light emitting apparatuses and display devices using LEDs suffer from non-uniform light properties, leading to issues such as color tone and brightness variations depending on the viewer's position, due to biased light intensity distributions and limited view angle dependencies.
Innovation Solution
The arrangement of light emitting elements with biased intensity distributions is optimized on a mounting substrate, where elements with different light properties are positioned to complement each other, achieving point symmetry and uniform intensity distributions across the display area, and the use of a reflection layer helps in achieving uniform light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light emitting elements with biased intensity distributions are arranged on a mounting substrate, then the light properties can be improved by complementing biases within groups, but the device complexity increases due to the need for specific arrangement patterns and point symmetry configurations
Solution Approach 1:
The mounting substrate is divided into multiple groups of light emitting elements, where each group is configured to complement biases within the group. This segmentation allows the complex arrangement to be managed in smaller, standardized units that can be replicated across the substrate, reducing overall complexity while maintaining uniformity.
Solution Approach 2:
Light emitting elements with asymmetric intensity distributions (biased toward certain directions) are deliberately arranged in asymmetric patterns that achieve point symmetry at the group level. The asymmetric properties of individual elements are preserved and utilized rather than corrected, turning a potential defect into a design feature that enables uniform overall emission.
2Illumination intensity
If light emitting elements are arranged to achieve point symmetry and uniform intensity distributions, then brightness uniformity across viewing angles is improved, but the manufacturing precision requirements increase for positioning elements correctly
Solution Approach 1:
The mounting substrate incorporates pre-defined arrangement patterns and positioning structures that guide the placement of light emitting elements during manufacturing. By preparing the substrate with predetermined locations and orientation markers before element mounting, the system reduces the precision burden on the assembly process while ensuring the required point symmetry and uniformity are achieved.
3Reliability
If multiple light emitting elements are arranged to complement biases within groups, then color reproduction uniformity is improved, but the time required for arrangement and assembly increases
Solution Approach 1:
The mounting substrate is divided into multiple identical or similar groups of light emitting elements, where each group is pre-configured to complement biases. This segmentation allows for standardized assembly procedures to be applied repeatedly, reducing the time required for each group while maintaining color reproduction uniformity across the entire substrate.
Solution Approach 2:
The invention changes the arrangement parameters (positions, orientations) of light emitting elements to achieve bias complementation within groups. By optimizing these parameters systematically, the assembly process can follow standardized patterns that reduce decision-making time and streamline the assembly operation, thereby reducing overall assembly time while maintaining color uniformity.
Data Source
AI summary
There is provided a light emitting apparatus, including a plurality of light emitting elements having biased light properties; and a mounting substrate where the light emitting elements are arranged such that the biased light properties are complemented within a group including at least two light emitting elements among a plurality of the light emitting elements. Also, there are provided a light emitting unit, a display apparatus, an electronic device and a light emitting element using a plurality of point light sources.