Display Device Frame Trenches for Light Efficiency
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Solution Overview
Problem
Existing display devices face challenges in maintaining initial image quality, improving durability, light efficiency, structural rigidity, assembly convenience, and resistance to external impacts, particularly in the arrangement and support structure of light sources within the backlight unit.
Innovation Solution
The display device incorporates a frame design with trenches and projections to accommodate light sources, a reflective sheet, and an optical sheet, along with a support structure that includes a skeleton and holders to secure substrates and light assemblies, enhancing the arrangement and distribution of light sources while improving structural integrity and assembly convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If light sources are arranged in a conventional manner without specialized support structures, then the device complexity is reduced, but the light efficiency and image quality deteriorate
Solution Approach 1:
The support structure is segmented into multiple functional components: a holder for mounting light sources, a skeleton for structural support, and a reflective sheet for light redirection. Each component performs a specific function to optimize light distribution while maintaining manageable complexity through modular design
Solution Approach 2:
The holder structure serves multiple functions simultaneously: it mechanically supports the light sources, positions them at optimal distances from the display panel, provides a mounting surface for the reflective sheet, and maintains the structural integrity of the backlight unit. This multi-functionality improves light efficiency without proportionally increasing complexity
2Length of stationary object
If the frame is made slim to reduce device thickness, then the device thickness is reduced, but the structural rigidity deteriorates
Solution Approach 1:
The skeleton structure implements local quality by concentrating structural reinforcement at critical locations where rigidity is needed most, such as at the corners and along the edges of the slim frame. This allows the frame to maintain overall slimness while providing targeted structural support to prevent deformation
Solution Approach 2:
The support structure combines multiple materials with complementary properties: a rigid skeleton material for structural strength, a reflective sheet material for light distribution, and potentially flexible mounting materials. This composite approach enables the slim frame to achieve both reduced thickness and maintained rigidity through material synergy
3Ease of manufacture
If holders are designed for easy assembly to improve manufacturing convenience, then the ease of manufacture is improved, but the reliability of holder attachment deteriorates
Solution Approach 1:
The holder design employs a nested structure where the skeleton provides an inner framework, the reflective sheet is positioned within or against the skeleton, and the light sources are mounted within the holder structure. This nesting arrangement simplifies assembly by allowing components to be stacked or inserted in sequence while maintaining secure attachment through interlocking geometries
Solution Approach 2:
The holder is pre-configured with mounting features, positioning elements, and attachment mechanisms before assembly. The skeleton and reflective sheet are pre-positioned or pre-attached to the holder structure, allowing for quick and reliable assembly of the complete backlight unit without compromising attachment reliability during the manufacturing process
4Reliability
If the display device is made more durable against external impacts, then the durability is improved, but the device complexity increases
Solution Approach 1:
The holder and skeleton structures are designed with impact-absorbing features and flexible mounting elements that provide cushioning against external impacts before damage can occur to the light sources or display panel. This preemptive protection is integrated into the structural design rather than added as separate protective layers, maintaining simplicity while improving durability
Data Source
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AI summary
A display device is disclosed. The display device includes a display panel, a frame (130) behind the display panel, a light assembly positioned between the display panel and the frame (130) and providing the display panel with light, and a substrate mounted with the light assembly and positioned in front of the frame (130). The frame (130) includes a flat portion forming a flat surface and a trench forming a stepped portion together with the flat portion. The substrate is positioned on the trench.