Micro LED Molding and Anti-Glare Stack for Uniform Display Brightness
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Solution Overview
Problem
Conventional light emitting diode (LED) displays using micro LEDs face challenges in maintaining uniform brightness across different regions, leading to variations in image quality due to differences in brightness and color between adjacent modules.
Innovation Solution
A light emitting module design featuring a circuit board with unit pixels covered by a molding member and an anti-glare layer, where the molding member includes a diffuser to ensure uniform thickness and a black molding member for reduced brightness variations, and an anti-glare layer with a pressure-sensitive adhesive to prevent glare, enhancing brightness uniformity and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If micro LEDs are arranged densely on a circuit board to achieve high resolution, then display quality is improved, but brightness uniformity deteriorates due to regional variations in light emission
Solution Approach 1:
A molding member is introduced as an intermediary component between the micro LEDs and the external environment. This molding member includes a diffuser that redistributes light from the micro LEDs, acting as a mediator to achieve uniform brightness across the display while maintaining the high-density arrangement of micro LEDs for high resolution
Solution Approach 2:
The molding member changes the physical parameters of light propagation by incorporating a diffuser. The diffuser modifies the light distribution pattern, scattering and redistributing light to achieve uniform illumination intensity across different regions of the display, thereby resolving the brightness uniformity issue
2Area of stationary object
If multiple light emitting modules are assembled to cover large display areas, then display area is increased, but brightness differences between modules worsen
Solution Approach 1:
The molding member with diffuser serves as a standardized intermediary component that can be applied uniformly across multiple light emitting modules. This ensures consistent light distribution characteristics across all modules, reducing brightness differences at module boundaries while enabling large display areas through modular assembly
Solution Approach 2:
By applying the same molding member design with diffuser to all light emitting modules, the patent achieves homogeneous light distribution characteristics across the entire display area. This standardization ensures that brightness properties are consistent across different modules, eliminating visible boundaries and regional variations
3Strength
If a molding member is added to cover unit pixels for protection and light distribution, then structural integrity is improved, but device complexity increases
Solution Approach 1:
The molding member is designed to perform multiple functions simultaneously: it provides structural protection for the micro LEDs, distributes light uniformly through the diffuser, and defines the optical path. By combining these functions into a single component, the patent improves structural integrity while minimizing 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 solution effectively reduces brightness differences between light emitting modules and regions, resulting in improved image quality and uniformity across the display screen by using a diffuser-containing molding member and an anti-glare layer to manage light distribution and prevent glare.
Implementation Method 1
the molding member includes a diffuser containing molding member
Data Source
AI summary
A light emitting module according to an embodiment of the present disclosure includes a circuit board, a plurality of unit pixels arranged on the circuit board, a molding member covering the plurality of unit pixels, and an anti-glare layer disposed on the molding member, in which the molding member includes a diffuser containing molding member.