Backlight Unit Recess Protrusion Fixing Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in maximizing the space occupied by light guide plates and optical sheets within the bottom cover, which affects the efficiency and brightness of the backlight unit.
Innovation Solution
The implementation of recesses and protrusions on the light guide plate, optical sheet, and reflective sheet, which are designed to be inserted into corresponding protrusions on the bottom cover, allowing for secure positioning and efficient use of space, thereby maximizing the area occupied by these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light guide plate and optical sheets are mounted on the bottom cover without fixing structures, then the assembly process is simple, but the positions of these components cannot be securely fixed, leading to misalignment and optical loss
Solution Approach 1:
The bottom cover is segmented with multiple recesses distributed at specific positions, each recess serving as an independent fixing point for the light guide plate and optical sheets. This segmentation allows secure positioning without requiring a continuous complex fixing structure throughout the entire component.
Solution Approach 2:
The recesses in the bottom cover and corresponding protrusions on the optical sheets create a self-aligning, self-fixing mechanism. When assembled, the protrusions automatically engage with the recesses, securing the components in their proper positions without requiring additional external fixing operations or complex assembly procedures.
2Illumination intensity
If the light guide plate and optical sheets are mounted to maximize space occupation, then the light efficiency is improved, but the components may shift or misalign, causing optical loss
Solution Approach 1:
The recesses are pre-positioned in the bottom cover at optimal locations that correspond to the desired final positions of the light guide plate and optical sheets. The protrusions on these components are designed to fit into these pre-positioned recesses, ensuring that when assembled, the components are automatically placed in their correct positions for maximum space utilization and optimal light efficiency.
Solution Approach 2:
Instead of providing uniform support across the entire surface, recesses are strategically positioned at specific critical locations where the light guide plate and optical sheets require support to maintain alignment. This localized fixing approach ensures stability at key positions while allowing the components to extend to the edges of the bottom cover for maximum space occupation.
3Reliability
If fixing structures are added to secure the light guide plate and optical sheets, then the position stability is improved, but the manufacturing complexity increases
Solution Approach 1:
The fixing structures are merged into the bottom cover itself through the formation of recesses during the bottom cover manufacturing process. The protrusions on the light guide plate and optical sheets are integrated with these components during their respective manufacturing processes. This merging eliminates the need for separate fixing parts or additional assembly steps, achieving position stability without significantly increasing manufacturing complexity.
Data Source
AI summary
Disclosed herein are a backlight unit and a display device. The backlight unit includes a bottom cover, a light emitting device module disposed at the lower portion of the inside of the bottom cover, a light guide plate disposed adjacent to the light emitting device module and disposed in front of the bottom cover, at least one optical sheet and a reflective sheet disposed adjacent to the light guide plate, recesses, each of which is disposed with one opened side, disposed at the edges of at least one of the light guide plate, the reflective sheet and the at least one optical sheet, and protrusions disposed at one side of the bottom cover disposed with the light emitting device module so as to be inserted into the recesses of the at least one of the light guide plate, the reflective sheet and the at least one optical sheet.