Backlight Assembly Adhesive Bonding for Weight Reduction
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Solution Overview
Problem
Existing display apparatuses with backlight assemblies face challenges in reducing volume and weight, particularly in mobile information processing devices like tablets and laptops, where components such as mold frames and bottom sashes contribute to bulk and weight without significantly enhancing structural strength.
Innovation Solution
A display apparatus design that omits the mold frame and bottom sash by using a first adhesive member to fix the backlight assembly to the display panel, leveraging the structural integrity of the display panel and light guide plate, and employing a closed-loop adhesive to maintain flatness and seal the assembly, thereby reducing volume and weight while maintaining strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mold frame and bottom sash are included in the backlight assembly, then structural strength is improved, but volume and weight increase
Solution Approach 1:
The patent removes the mold frame and bottom sash from the backlight assembly structure, extracting only the essential light guide plate, reflecting member, and optical sheets. This extraction eliminates unnecessary structural components that contribute to weight and volume without providing sufficient structural benefit, thereby resolving the contradiction between structural strength and weight reduction.
Solution Approach 2:
The display panel serves multiple functions: it acts as both the display surface and provides structural support that previously required separate mold frames and bottom sashes. By making the display panel multi-functional, the patent eliminates redundant structural components while maintaining overall structural integrity, thus reducing weight without sacrificing strength.
2Strength
If mold frame and bottom sash are included in the backlight assembly, then structural strength is improved, but volume increases
Solution Approach 1:
The patent extracts and removes the mold frame and bottom sash components from the backlight assembly, eliminating the volume these components occupy. This extraction reduces the overall volume of the backlight assembly while maintaining structural strength through the optimized arrangement of remaining components such as the light guide plate and reflecting member.
Solution Approach 2:
The patent merges the structural support function previously provided by separate mold frames and bottom sashes into the display panel itself. By combining these functions into a single integrated structure, the patent reduces the total volume required for structural components while maintaining the necessary structural strength.
3Device complexity
If first adhesive member is used to fix backlight assembly to display panel, then assembly is simplified, but manufacturing precision requirements increase
Solution Approach 1:
The patent removes complex mechanical fastening systems and multi-step assembly procedures, replacing them with a single adhesive bonding step. This extraction of complex assembly mechanisms simplifies the overall assembly process, although it does require precise adhesive application to ensure proper bonding and positioning of the backlight assembly components.
Data Source
AI summary
A backlight assembly outputs light. A display panel receives the light and displays an image. A first adhesive member on an edge of the backlight assembly fixes the backlight assembly to the display panel. The backlight assembly may include a light emitting unit, a light guide plate and a reflecting member. The first adhesive member may intervene between the display panel and the reflecting member and may fix the display panel to the reflecting member.