Reflective-Sheet Display Light Source Layout for Uniform Brightness
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Solution Overview
Problem
Existing display apparatuses face challenges in assembly ease, brightness, and material costs, necessitating improvements in design and configuration.
Innovation Solution
A display apparatus with a reflective sheet and dual light source substrates, where the distance between light sources is optimized to enhance assembly, brightness, and reduce material costs by using a specific distance ratio between light sources on different substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light sources are arranged closer together to reduce material costs and simplify assembly, then assembly ease and material costs improve, but brightness uniformity deteriorates
Solution Approach 1:
The patent applies parameter changes by establishing a specific distance ratio relationship between light sources on different substrates. The first distance between light sources on different substrates is set to be 2-4 times the second distance between adjacent light sources on the same substrate. This quantitative parameter optimization ensures both assembly ease and brightness uniformity are achieved simultaneously.
2Illumination intensity
If light sources on different substrates are positioned farther apart to improve brightness uniformity, then brightness uniformity improves, but assembly complexity and material costs increase
Solution Approach 1:
The patent resolves this contradiction by changing the spatial arrangement parameter to a specific ratio relationship. By defining the first distance as 2-4 times the second distance, the patent achieves brightness uniformity without excessive assembly complexity, as the ratio relationship provides a clear design guideline for positioning light sources during assembly.
3Illumination intensity
If light sources on different substrates are positioned farther apart to improve brightness uniformity, then brightness uniformity improves, but material costs increase
Solution Approach 1:
The patent applies parameter changes by optimizing the distance ratio parameter. By setting the first distance to be 2-4 times the second distance, the patent achieves brightness uniformity while minimizing the number of light sources required, thereby reducing material costs without sacrificing display quality.
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
The optimized distance between light sources improves assembly efficiency, enhances brightness uniformity, and reduces material costs while maintaining effective light distribution.
Implementation Method 1
a reflective sheet disposed in front of the bottom chassis
Data Source
AI summary
A display apparatus includes a reflective sheet, a light source substrate on the reflective sheet and including a first light source substrate and a second light source substrate, and a plurality of light sources including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between a first light source of the plurality of first light sources and a second light source of the plurality of second light sources is greater than or equal to two times a second distance and less than or equal to four times the second distance. The second distance is a distance between adjacent first light sources of the plurality of first light sources.