Backlight Module Bottom Reflective Sheet Thickness Reduction
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Solution Overview
Problem
Existing edge-type backlight modules occupy excessive space in the thickness direction due to the positioning of the bottom reflective sheet entirely below the frame, making it difficult to reduce the thickness parameter while maintaining structural strength.
Innovation Solution
The bottom reflective sheet is partially overlapped with the frame in the thickness direction, with adjacent portions embedded into the frame's border, allowing the light source assembly to be positioned above, and a concave-convex mating structure is formed to optimize light reflection and reduce space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bottom reflective sheet is disposed entirely below the frame, then the structural strength is maintained, but the thickness of the backlight module increases
Solution Approach 1:
The bottom reflective sheet transitions from being disposed entirely below the frame (one-dimensional arrangement) to being partially overlapped with the frame in the thickness direction (three-dimensional arrangement). This dimensional change allows the reflective sheet to extend into the thickness direction, reducing the overall module thickness while maintaining structural integrity through the frame's support.
Solution Approach 2:
The bottom reflective sheet is embedded into the frame structure, with portions of the reflective sheet nested within the frame's thickness. This nesting arrangement allows the reflective sheet to utilize the frame's internal space, reducing the overall thickness of the backlight module while maintaining both structural strength and reflective functionality.
2Length of stationary object
If the bottom reflective sheet is overlapped with the frame, then the thickness is reduced, but the positioning precision becomes more difficult
Solution Approach 1:
The bottom reflective sheet is divided into multiple portions: a first portion disposed below the frame, a second portion overlapped with the frame, and a third portion extending beyond the frame. This segmentation allows each portion to serve specific functions - the first portion provides structural support, the second portion reduces thickness, and the third portion ensures complete light reflection, thereby maintaining positioning precision while reducing overall thickness.
Solution Approach 2:
Different portions of the bottom reflective sheet are positioned in different locations relative to the frame to optimize local functions. The first portion below the frame provides structural stability, the second portion overlapped with the frame reduces thickness, and the third portion beyond the frame ensures complete light reflection. This local quality differentiation maintains manufacturing precision while achieving thickness reduction.
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 configuration reduces the overall thickness of the backlight module while maintaining effective light reflection, allowing for a more compact design without compromising performance.
Implementation Method 1
a bottom reflective sheet, at least a portion of a thickness of which is overlapped with a thickness of the frame in a thickness direction of the backlight module
Data Source
AI summary
The present disclosure relates to a backlight module and a liquid crystal display apparatus. The backlight module includes: a light source assembly; a frame, to which at least a portion of the light source assembly is connected; and a bottom reflective sheet, at least a portion of a thickness of which is overlapped with a thickness of the frame in a thickness direction of the backlight module.