Backlight Module Support Structure for Ultra-Thin Display Design
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Solution Overview
Problem
The thickness of LCD TVs is increased due to the plastic frame, which hinders the achievement of ultra-thin designs.
Innovation Solution
A backlight module comprising an optical film set, a light guide plate, a reflector plate, and a back plate with a support portion that eliminates the need for a plastic frame, incorporating a light source and a compact structure to reduce thickness and enhance appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a plastic frame is used to support the display component, then the structural strength and support function are improved, but the overall thickness of the display device increases
Solution Approach 1:
The patent combines the support function with the backlight module structure by integrating a support plate into the back plate assembly. The support plate is positioned to directly support the display component, merging the structural support function with the optical support structure, thereby eliminating the need for a separate plastic frame and reducing overall thickness
Solution Approach 2:
The back plate structure is designed to serve multiple functions: it provides structural support through the support plate, houses the optical components (light guide plate, reflector plate, optical film set), and maintains the overall structural integrity of the display device, replacing the need for a dedicated plastic frame
2Length of moving object
If the backlight module structure is simplified to reduce thickness, then the device becomes thinner, but the light distribution uniformity and optical performance may deteriorate
Solution Approach 1:
The optical system is segmented into distinct functional layers: a light guide plate for light distribution, a reflector plate for light reflection and redirection, and an optical film set (including upper and lower prisms and diffusion sheets) for light diffusion and uniformity enhancement. This segmentation allows each component to be optimized for its specific function while maintaining compact overall thickness
Solution Approach 2:
The patent uses multiple optical surfaces and interfaces (front surface, rear surface, side surfaces of the light guide plate) for light entry and manipulation. By utilizing three-dimensional light paths and multiple reflection/diffusion interfaces, the system achieves uniform light distribution without requiring increased thickness
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
The solution results in a thinner display device with improved front view lightness and axial lightness, eliminating the need for a plastic frame and enhancing overall appearance and visual experience.
Implementation Method 1
an optical film set including an upper prism, a lower prism and a diffusion sheet which are sequentially stacked
Implementation Method 2
an optical film set including an upper prism, a lower prism and a diffusion sheet which are sequentially stacked
Implementation Method 3
a reflector plate; and a back plate including a base plate and a support portion disposed on a periphery of the base plate. The reflector plate is disposed on the base plate
Data Source
AI summary
Disclosed are a backlight module and a display device. The backlight module includes: an optical film set; a light guide plate; a reflector plate; and a back plate. The back plate includes a base plate and a support portion disposed on a periphery of the base plate. The reflector plate is disposed on the base plate, the light guide plate is disposed on a side of the reflector plate away from the base plate, and the optical film set is disposed on a side of the light guide plate away from the reflector plate, one end of the support portion located in the same plane as the optical film set away from the base plate.