3D Optical Control Structures for LCD Light Source Uniformity
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Solution Overview
Problem
Conventional light source modules for liquid crystal displays face issues with non-uniform light distribution and require additional spacers to support optical films, leading to increased material and assembly costs.
Innovation Solution
The implementation of a light source module with three-dimensional optical control structures that include top and side light transmissive patterns, which eliminate the need for spacers by providing uniform light distribution and reducing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an entire optical film is used to make brightness uniform, then brightness uniformity is improved, but device complexity increases due to additional spacer requirements
Solution Approach 1:
The optical control function is segmented into multiple three-dimensional structures with light transmissive patterns distributed across top and side portions. Each structure independently controls light from its corresponding light source, achieving overall uniformity through localized segmentation rather than requiring a single continuous optical film with spacers
Solution Approach 2:
The invention transitions from a two-dimensional optical film to three-dimensional optical control structures with height dimension. These vertical structures with light transmissive patterns on multiple surfaces (top and sides) provide enhanced light redistribution capability without requiring additional spacer components, as the 3D geometry itself provides the necessary optical control
2Illumination intensity
If an optical film is used to maintain brightness, then brightness maintenance is improved, but material usage increases due to spacer requirements
Solution Approach 1:
The invention merges the optical control function and structural support function into a single integrated three-dimensional structure. The light transmissive patterns are directly formed on the optical control structures themselves, eliminating the need for separate optical films and spacer components, thereby reducing overall material usage while maintaining brightness
Solution Approach 2:
The three-dimensional optical control structures serve multiple functions simultaneously: they control light distribution, maintain structural integrity, and eliminate the need for separate spacer components. This multi-functionality reduces the total material required compared to conventional designs that require dedicated optical films and spacers
3Illumination intensity
If conventional optical film design is used, then light distribution is achieved, but manufacturing cost increases due to additional spacer components
Solution Approach 1:
The invention extracts and eliminates the unnecessary spacer component from the conventional optical film design. By integrating the light distribution function directly into three-dimensional structures with light transmissive patterns, the design removes the redundant spacer element, simplifying manufacturing and reducing costs while maintaining effective light distribution
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 design achieves uniform light distribution in liquid crystal displays, reduces material and assembly costs, and eliminates the need for additional spacers, thereby enhancing the efficiency and cost-effectiveness of the light source module.
Implementation Method 1
Each of the three-dimensional optical control structures includes a top portion, a first side portion, and a second side portion. The top portion is disposed corresponding to the light source, where there is a plurality of top light transmissive patterns within a top region of the top portion... The first side portion and the second side portion are separately connected to the top portion to support the top portion, and the first side portion and the second side portion each have a plurality of side light transmissive patterns
Data Source
AI summary
Alight source module includes a substrate, multiple light sources disposed on the substrate, and multiple three-dimensional optical control structures located above the light sources. Each optical control structure includes a top portion disposed corresponding to the light source and has multiple top light transmissive patterns, a first side portion, and a second side portion. A total area of top light transmissive patterns within a top region divided by an area of the top region is T. The first and second side portions are respectively connected to the top portion, and each has multiple side light transmissive patterns. A total area of multiple side light transmissive patterns within a side region divided by an area of the side region is S. The patterns satisfy: 0.3×(B/A)<S/T<0.6×(B/A), where A represents a width of the top portion, and B represents a distance between an optical control structure and an adjacent optical control structure.