Light Source Assembly Module Segmentation for Display Thinning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing direct type backlight modules in LCDs require a specific optical distance between the light source and optical films, which limits the thinness of the display device, as the light source is uniformly distributed behind the display panel, making it difficult to reduce the overall thickness.
Innovation Solution
A light source assembly comprising multiple modules with a base, a light emitting unit, and a light guide member, where the light guide member diffuses point light into a surface light within a short distance, allowing the modules to be connected to reduce the optical distance, thereby thinning the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a direct type backlight module is used to provide uniform light distribution, then image uniformity is improved, but the optical distance between light source and optical films must be maintained at 15-35 mm, which increases the overall thickness of the display device
Solution Approach 1:
The light source assembly is divided into multiple light source modules arranged in an array, where each module contains a light emitting unit and a light guide member. This segmentation allows the system to achieve uniform light distribution through the collective effect of multiple point sources while reducing the optical distance requirement for each individual module.
Solution Approach 2:
The patent transitions from a single planar light source to a three-dimensional array of light source modules. By arranging multiple light emitting units in a spatial array with light guide members extending toward the display panel, the system achieves uniform illumination through spatial distribution rather than requiring a large optical distance.
2Length of stationary object
If the optical distance is reduced to thin the display device, then the overall thickness is improved, but the light mixing effect deteriorates, resulting in non-uniform image quality
Solution Approach 1:
By segmenting the light source into multiple modules with individual light guide members, each module creates its own light diffusion path. This allows the optical distance to be reduced while maintaining light uniformity through the cumulative effect of multiple segmented light guides working in parallel.
Solution Approach 2:
Each light source module is designed with local optimization - the light guide member in each module is positioned and configured to optimize light diffusion locally. This local quality approach ensures that even at reduced optical distances, each module produces uniform light distribution, and the collective array maintains overall uniformity.
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 effectively reduces the optical distance from 15-35 mm to as low as 5 mm, enabling a thinner display device while maintaining uniform image quality by diffusing point light into surface light, thus benefiting the thinning of the display device.
Implementation Method 1
the light guide member of the light source module can diffuse point light source into surface light source within a short distance
Data Source
AI summary
A light source assembly includes a plurality of light source modules. Each of the light source modules includes a base, a light emitting unit and a light guide member. The light guide member has an accommodating space. The light emitting unit and the light guide member are disposed on the base and the light emitting unit is located in the accommodating space. At least one of the base and the light guide member has a first connecting structure and a second connecting structure. The first connecting structure of one of the light source modules is connected to the second connecting structure of another one of the light source modules, such that the light source modules are connected to each other to form the light source assembly.