Backlight Frame Layout With Variable Optical Distance for Uniform Illumination
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Solution Overview
Problem
Existing display devices face challenges in optimizing the space efficiency and light distribution of their backlight units, leading to non-uniform illumination and inefficient use of space.
Innovation Solution
The display device incorporates a reflective sheet with varying optical distances and a structured frame design that includes asymmetrical coupling portions for the optical sheet, enhancing light distribution and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional backlight unit with uniform optical distance is used, then the structure is simple, but space efficiency is poor and light distribution is non-uniform
Solution Approach 1:
The frame is segmented into multiple support structures (bottom support and side supports) positioned at different optical distances from the display panel. This segmentation allows each support to be optimized for its specific location, improving overall space efficiency while maintaining structural integrity.
Solution Approach 2:
Different portions of the frame are assigned different optical distances based on local requirements. The bottom support is positioned at a first optical distance while side supports are positioned at a second, smaller optical distance. This local differentiation optimizes light distribution uniformity and space utilization in each region.
2Productivity
If optical distance is reduced to improve space efficiency, then space efficiency improves, but light uniformity deteriorates
Solution Approach 1:
The frame structure incorporates different optical distances at different locations to address local light distribution requirements. By positioning side supports closer to the display panel than the bottom support, the system achieves better light uniformity in critical regions while maintaining overall space efficiency.
3Ease of manufacture
If substrate spacing is increased to accommodate larger optical distance, then manufacturing is easier, but light distribution uniformity worsens
Solution Approach 1:
The substrate assembly is segmented into multiple groups positioned on different supports with varying spacings. This segmentation allows each group to be optimized for its specific optical distance requirements, achieving both ease of manufacture and light uniformity through localized optimization.
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 enhances space efficiency and uniformity of light distribution, providing improved brightness and reducing dark areas in the display panel.
Implementation Method 1
a reflective sheet capable of being applied according to various optical distances
Data Source
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AI summary
A display device is provided. The display device includes: a display panel; a frame disposed at a rear of the display panel; a substrate and an optical assembly which are disposed between the display panel and the frame and are disposed on the frame, wherein the frame includes: a bottom having a first optical distance from the display panel; and a side support having a second optical distance, which is smaller than the first optical distance, from the display panel, wherein the substrate includes: a first plurality of substrates disposed on the bottom of the frame; and a second plurality of substrates disposed on the side support of the frame, wherein a spacing between the first plurality of substrates is greater than a spacing between the second plurality of substates.