Integrated Diffusion Plate with Supporters for Thin LCD Backlights
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Solution Overview
Problem
Conventional backlight modules for liquid crystal displays (LCDs) have a thick top bezel that increases the module's thickness and manufacturing complexity, requiring additional assembly steps and parts.
Innovation Solution
A diffusion plate with integrated supporters that connects directly to the housing and supports the LCD panel, reducing the number of components and assembly time by integrating film positioning units and a light exit surface for uniform light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a conventional top bezel is used to support the LCD panel, then the structural support is provided, but the overall thickness of the backlight module increases
Solution Approach 1:
The diffusion plate is merged with support structures (first and second supporters) to combine the light diffusion function and the mechanical support function into a single integrated component. This eliminates the need for a separate top bezel, thereby reducing the overall thickness while maintaining the support capability for the LCD panel.
2Ease of manufacture
If a separate top bezel is used for assembly, then the LCD panel is supported, but the number of parts and assembly steps increase
Solution Approach 1:
The diffusion plate integrates multiple functions: light diffusion, film positioning (through film positioning units), and structural support (through supporters). This multi-functionality reduces the number of separate parts and simplifies the assembly process, as these functions are achieved through a single integrated component rather than multiple separate parts.
Solution Approach 2:
The diffusion plate serves multiple purposes: it diffuses light from the light source, positions films during assembly (via film positioning units), and provides structural support for the LCD panel (via supporters). This multi-functionality reduces device complexity and simplifies manufacturing.
3Manufacturing precision
If films are positioned without integrated positioning units, then the diffusion plate remains simple, but film positioning accuracy and stability decrease
Solution Approach 1:
Film positioning units are integrated into the diffusion plate structure, combining the film positioning function with the light diffusion function. This ensures accurate and stable film positioning during assembly while maintaining the simplicity of the overall diffusion plate design.
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 reduces the overall thickness and part count of the backlight module, simplifies the manufacturing process, and enhances light diffusion and uniformity, while providing robust support for the LCD panel.
Implementation Method 1
a light exit surface between the first edge and the second edge, wherein the light exit surface also includes a light emitting area
Data Source
AI summary
A diffusion plate and a backlight module for use in a liquid crystal display panel are provided. The backlight module includes a housing, a reflection plate, a light source, a diffusion plate and films. The diffusion plate has a plate body, a first supporter, and a second supporter. The plate body has a light exit surface. The first supporter and the second supporter are respectively disposed on two sides of the plate body and extend outwardly from the light exit surface. The films are disposed on the plate body and between the first and second supporters. The first and second supporters contact and support the liquid crystal display panel.