Backlight Unit Supporter With Cut Corner Insertion
Solution Overview
Problem
Conventional backlight units for liquid crystal displays face challenges in minimizing bezel width and achieving uniform light distribution, while also requiring a cost-effective and efficient method for manufacturing the supporter of the light source unit.
Innovation Solution
A backlight unit design featuring a bottom chassis with a supporter that includes a main body and an insertion portion with specific cut corner areas and protrusions, allowing for a slimmer display device and improved light uniformity, along with a manufacturing method involving extrusion and cutting processes to form the supporter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the supporter is manufactured using conventional methods (separate pieces fixed at corners), then the manufacturing process is simple, but the light uniformity is poor and the structure is less stable
Solution Approach 1:
The patent merges multiple separate supporter pieces into a single integrated supporter body with a specific structure that includes a base portion and four side portions extending from the corners. This unified structure improves light uniformity and structural stability while maintaining manufacturing simplicity through extrusion and cutting processes.
Solution Approach 2:
The supporter is segmented into functional regions (base portion and four side portions) that serve different purposes in light distribution and structural support. The side portions extend from corner areas to provide targeted support and improve light uniformity across the backlight unit.
2Length of moving object
If the bezel width is reduced to make the display device slimmer, then the design is more compact, but the structural stability and light distribution become more difficult to maintain
Solution Approach 1:
The supporter structure extends in multiple dimensions with side portions projecting from corner areas of the base portion. This multi-dimensional configuration provides structural stability and controls light distribution effectively even when the overall bezel width is reduced.
Solution Approach 2:
The supporter provides localized support and light control at critical corner areas through the side portions, while maintaining overall structural integrity. This local quality enhancement allows for reduced bezel width without compromising stability or light uniformity.
3Ease of manufacture
If the supporter structure is simplified to reduce manufacturing cost, then the production is more cost-effective, but the light uniformity and structural integrity deteriorate
Solution Approach 1:
The supporter structure is designed to be self-supporting with an integrated geometry that provides both structural integrity and light uniformity control inherently, without requiring additional complex components or assembly steps. The extrusion and cutting processes create a structure that serves multiple functions simultaneously.
Data Source
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AI summary
A backlight unit includes: a bottom chassis (210); a supporter (220) positioned to extend along one edge of the bottom chassis; a light source unit (230) fixed to the supporter; and a light guide plate (270) that is positioned on the bottom chassis and is configured to transmit light emitted from a light source of the light source unit. The supporter includes a main body of which at least one corner area is cut and an insertion portion that is positioned at the corner area. Each of the main body and the insertion portion includes a base portion (221a, 221b) and a side wall (222a,222b), and the side wall (222b) of the insertion portion extends from the side wall (222a) of the main body and in a direction different than a direction of the side wall (222a) of the main body.