Backlight Assembly Stepped Light Guide Plate Fixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional backlight assemblies for liquid crystal display devices are complex and difficult to assemble, leading to potential defects and reduced productivity during the assembly process.
Innovation Solution
A backlight assembly design featuring a light guide plate with a stepped portion and a receiving container with corresponding fixing portions, allowing for a top-down assembly method that simplifies the integration of the light guide plate, optical sheet, lamp assembly, and panel-guiding member, reducing the risk of defects and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional backlight assembly with multiple components (lamp assembly, light guide plate, light-reflecting plate, optical sheets, bottom chassis, receiving container, panel-guiding member) is used, then the assembly can generate light for displaying images, but the assembly becomes complex and difficult to assemble
Solution Approach 1:
The patent combines the bottom chassis and receiving container into a single integrated receiving container structure. The bottom plate forms an integral part of the receiving container walls, eliminating the need for separate bottom chassis assembly. This merging reduces the number of components and simplifies the assembly process while maintaining structural integrity and reliability.
Solution Approach 2:
The receiving container is designed with integrated fixing portions formed directly on the bottom plate and sidewalls. These fixing portions are segmented features that provide specific functions (securing light guide plate, optical sheets, panel-guiding member) without requiring additional separate fastening components. The segmentation of functional features within the integrated structure simplifies assembly while ensuring reliable positioning.
2Productivity
If multiple separate components are used in the backlight assembly, then the assembly can perform its light generation and guidance functions, but the assembly process becomes time-consuming and prone to defects
Solution Approach 1:
The receiving container is pre-formed with integrated fixing portions during its manufacturing process. The bottom plate and sidewalls are formed as a single piece with built-in features for securing components. This preliminary action eliminates the need for time-consuming assembly steps to create fixing structures, allowing for rapid assembly of the light guide plate, optical sheets, and panel-guiding member without delaying productivity.
3Manufacturing precision
If a simple receiving container without integrated fixing portions is used, then the manufacturing process is simpler, but the assembly accuracy and component positioning become difficult to achieve
Solution Approach 1:
The fixing portions are merged with the bottom plate and sidewalls as an integral formed structure. The bottom plate is formed as a single piece with the sidewalls, and the fixing portions are created through forming processes rather than separate manufacturing steps. This merging maintains manufacturing simplicity while providing precise positioning features for components, as the fixing portions are inherently accurate due to being formed as one piece.
Data Source
AI summary
A backlight assembly includes a light guide plate (LGP) having a stepped portion formed at a corner of the LGP, an optical sheet disposed over the LGP and a receiving container receiving the LGP and the optical sheet. The receiving container includes a bottom plate, first through fourth sidewalls and a first LGP fixing portion. The second sidewall is adjacent to the first sidewall. The third sidewall faces the first sidewall. The fourth sidewall faces the second sidewall. The first through fourth sidewalls are extended upwardly from edge portions of the bottom plate. The first LGP fixing portion is formed at the first sidewall such that the LGP fixing portion corresponds to the stepped portion of the LGP. Therefore, a display device is easily assembled. Furthermore, a defilement that may occur during an assembling process may be reduced to enhance productivity.