Water and Moisture-resistant Micro-LED Display Technology
4 patents in this list
Updated:
Micro-LED displays face significant engineering challenges when exposed to moisture and water vapor, which can degrade both optical performance and device longevity. Current displays show accelerated aging and color shift when relative humidity exceeds 85%, while direct water exposure can lead to delamination of critical optical layers and eventual device failure.
The fundamental challenge lies in developing moisture barriers that maintain display clarity and brightness while providing reliable protection against environmental factors across thousands of operating hours.
This page brings together solutions from recent research—including fluoropolymer encapsulation techniques, multi-layer moisture blocking architectures, hydrophilic-hydrophobic interface engineering, and quantum dot protection strategies. These and other approaches focus on achieving both optical excellence and environmental durability in real-world applications.
1. Micro LED Display Device with Quantum Dot Isolation Frame and Positioning Frame Integration
PlayNitride Display Co., Ltd., 2023
Micro LED display device with improved packaging to prevent chromatic aberration when using quantum dot (QD) materials. The display has a positioning frame outside the display region to connect the cover plate to the substrate. An isolation frame surrounds the positioning frame to block environmental factors like water and oxygen from the QDs. The isolation frame has a lower water vapor transmission rate than the positioning frame to protect the QDs better. This prevents chromatic aberration when viewing the display from wider angles.
2. Fluoropolymer-Coated LED Package Structure with Differential Transmittance Encapsulant and Sealing Mechanism
LITE-ON OPTO TECHNOLOGY (CHANGZHOU) CO., LTD., 2022
LED package structure with waterproofing to improve light extraction and reliability. The structure has an LED on a substrate enclosed in a through hole with a side wall. An encapsulant fills the hole around the LED. A waterproof coating seals between the encapsulant and side wall. The coating and encapsulant are fluoropolymers with different transmittances. The lower transmittance coating seals the interface to prevent moisture ingress. The higher transmittance encapsulant allows light extraction.
3. Barrier-Layer-Coated Organic Substrate for Moisture-Resistant Electronic Device Packaging
STMICROELECTRONICS S.r.l., 2022
Waterproof packaging for electronic devices like sensors that uses organic substrates and a barrier layer to prevent moisture ingress through the substrate. The devices have a package with an organic substrate that allows moisture penetration. A barrier layer is formed on the substrate surface facing the component to block moisture ingress. This prevents contamination of the component from absorbed moisture in the organic substrate.
4. Encapsulation Substrate with Penetrating Holes and Moisture-Blocking Layer for LED Displays
LG Display Co., Ltd., 2020
Display apparatus with improved moisture and warpage resistance in encapsulated LED displays. The display has an encapsulation substrate with penetrating holes overlapping a moisture-blocking layer between the LED and the encapsulation substrate. This prevents moisture ingress while still allowing heat escape. The moisture-blocking layer has lower water vapor transmission rate than the encapsulating layer. The penetrating holes have small size and sufficient spacing to minimize moisture differences and prevent warpage. The blocking layer is made of a hard material to complement the soft encapsulation substrate rigidity.
In order to fully fulfill the potential of moisture resistance micro-LED technology and enable its use in a variety of situations, including outdoor displays and mobile devices, more research and development is needed for hydrophilic and hydrophobic adhesion approaches.
