Display Device Light Guide Plate Structural Support
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Solution Overview
Problem
Current liquid-crystal display devices face challenges in achieving a thinner and lighter form factor due to structural restrictions from the front frame and back case, which limits their weight reduction and efficiency.
Innovation Solution
The proposed display device design eliminates the need for a back board by using a decorative layer and reflector adhered to the light guide plate, allowing for a thinner and lighter structure while maintaining functionality, and incorporates a light guide plate with refractive layers and optical films to enhance light emission efficiency and reflectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a back board and front frame structure is used to support the display panel and backlight module, then structural strength and protection are improved, but device thickness and weight increase
Solution Approach 1:
The patent removes the back board from the traditional display structure, extracting only the essential support function. The display panel is directly mounted on the light guide plate, eliminating the intermediate back board structure while maintaining structural integrity through optimized mounting design.
Solution Approach 2:
The patent combines multiple structural functions into fewer components. The light guide plate serves both as a light diffusion element and as a structural support base for the display panel, merging optical function and mechanical support into a single integrated component.
2Strength
If a back board and front frame structure is used to support the display panel and backlight module, then structural strength and protection are improved, but device weight increases
Solution Approach 1:
The back board is completely removed from the structure, extracting unnecessary weight while preserving essential support functions through alternative mounting arrangements that directly attach the display panel to the light guide plate assembly.
Solution Approach 2:
The patent employs thin-film adhesive layers and slim structural components instead of thick rigid back boards, achieving structural support with minimal weight addition while maintaining the required mechanical strength and protection.
3Ease of manufacture
If traditional adhesive layers are used to couple the display panel to the backlight unit, then assembly simplicity is maintained, but light diffusion and optical performance are insufficient
Solution Approach 1:
The adhesive layer is designed to perform multiple functions simultaneously: it provides mechanical bonding between components while also serving as a light diffusion medium. This multi-functional adhesive eliminates the need for separate diffusion films, maintaining assembly simplicity while enhancing optical performance.
Solution Approach 2:
The patent modifies the optical parameters of the adhesive layer by selecting materials with specific refractive indices and diffusion properties. This changes the light propagation characteristics to achieve better light distribution while maintaining the adhesive's primary bonding function.
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 design results in a lighter, thinner display device with improved light emission efficiency and reduced weight, achieving the goal of a more compact and efficient display solution.
Implementation Method 1
an adhesive layer that is formed adjacent to the first surface of the light guide plate and has a refractive index that is generally equal to the refractive index of the light guide plate
Implementation Method 2
a light reflecting layer that is bonded to the first surface of the light guide plate with at least the adhesive layer being interposed therebetween
Data Source
Figure 1
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Figure 2B
AI summary
A display device including a display panel and an optical element is provided. The optical element is disposed on one side of the display panel. At least one portion of the optical element overlaps a display area of the display panel. An area of the optical element which is exposed and does not overlap the display area functions as an appearance area. Therefore, the appearance area of the optical element may be seen by a user from outward appearance of the display device. Brand trademarks, ambient light, touch buttons, and other patterns may be displayed through the appearance area. Therefore, a backlight module may be decorative or perform other additional functions besides functioning as a light source.