Light-Emitting Module Lens Layout for Visual Mura Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light-emitting modules in electronic devices often suffer from visual mura due to brightness differences between adjacent light-emitting elements.
Innovation Solution
A light-emitting module design that includes a circuit substrate with a first light-emitting element and an optical pattern adjacent to it, both covered by a lens. This configuration aims to reduce brightness differences and improve uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light-emitting elements are arranged adjacent to each other on the circuit substrate, then the light-emitting module can provide sufficient illumination intensity, but visual mura occurs due to brightness differences between adjacent elements
Solution Approach 1:
The patent introduces an optical pattern as an intermediary element positioned between adjacent light-emitting elements. This optical pattern acts as a mediator to redistribute and blend the light output, reducing the visual boundary and brightness difference between individual elements, thereby eliminating visual mura while preserving overall illumination intensity.
Solution Approach 2:
The patent applies local quality by positioning specific optical patterns at strategic locations between light-emitting elements. These localized optical modifications create varying light distribution characteristics in different regions, with higher light redistribution in boundary areas between elements, thereby achieving uniform brightness across the entire display surface.
2Manufacturing precision
If a lens is added to cover the light-emitting element and optical pattern, then brightness uniformity is improved, but device complexity increases
Solution Approach 1:
The patent merges the lens function with the existing display structure by integrating it as a coverage layer over the light-emitting elements and optical patterns. This combination approach achieves brightness uniformity enhancement without adding completely separate optical systems, thereby limiting the increase in device complexity.
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 proposed solution effectively reduces the brightness difference between adjacent light-emitting elements, thereby minimizing visual mura and enhancing the overall performance of the light-emitting module.
Implementation Method 1
an optical pattern disposed on the circuit substrate and adjacent to the first light-emitting element
Implementation Method 2
a lens covering the first light-emitting element and the optical pattern
Data Source
AI summary
A light-emitting module is provided. The light-emitting module includes a circuit substrate and a first light-emitting element disposed on the circuit substrate. The light-emitting module also includes an optical pattern disposed on the circuit substrate and adjacent to the first light-emitting element. The light-emitting module further includes a lens covering the first light-emitting element and the optical pattern.