Backlight Diffusing Plate Fixing Member for Uniform Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display apparatuses with diffusing plates fixed using screws create dark areas due to holes, leading to uneven light distribution and image quality issues.
Innovation Solution
A fixing member with a reflective surface is used to immovably attach the diffusing plate to the backlight unit, preventing movement and ensuring uniform light distribution by compensating for light loss with a reflective member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the diffusing plate is fixed using screws requiring holes, then the diffusing plate can be securely attached to the backlight unit, but dark areas occur due to the holes causing uneven light distribution
Solution Approach 1:
The patent removes the holes from the diffusing plate by using a clamp structure that secures the diffusing plate to the backlight unit without requiring any holes in the diffusing plate itself, thereby eliminating the dark areas caused by hole openings while maintaining secure attachment
Solution Approach 2:
The patent introduces a clamp as an intermediary component between the diffusing plate and the backlight unit, which provides the necessary mechanical attachment without creating holes in the diffusing plate, thus resolving the conflict between secure fixing and uniform light distribution
2Strength
If the diffusing plate is fixed using screws, then the diffusing plate can be attached to the backlight unit, but the fixing structure becomes complex requiring multiple components
Solution Approach 1:
The patent combines the attachment function into a single clamp structure that integrates both the securing mechanism and the mounting function, eliminating the need for separate screws, washers, and other fastening components, thus reducing structural complexity while maintaining reliable attachment
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
Prevents the formation of dark areas, maintaining high image quality by ensuring the diffusing plate is securely fixed and uniformly illuminated.
Implementation Method 1
A fixing member with a reflective surface is used to immovably attach the diffusing plate to the backlight unit, preventing movement and ensuring uniform light distribution by compensating for light loss with a reflective member
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A display apparatus includes a liquid crystal display panel configured to display an image, and a backlight unit configured to emit light to the liquid crystal display panel, wherein the backlight unit includes a bottom chassis (31) comprising an accommodation space configured to accommodate a plurality of light sources, a middle mold (32) provided on the bottom chassis, a diffusing plate (33) provided on the middle mold, and a fixing member (40) provided on an outer surface of the bottom chassis and configured to contact one side of the diffusing plate and prevent movement of the diffusing plate.