OLED Display Panel Moisture Extraction Through Encapsulation Edge
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Solution Overview
Problem
OLED display panels are susceptible to water and oxygen intrusion, which affects their lifespan due to the diminishing sealing effect of encapsulation bodies over time, especially in complex external environments.
Innovation Solution
A display panel design incorporating a moisture processing structure with a power device and control device that actively extracts and discharges moisture from within the encapsulation body through coordinated operation, utilizing airflow channels and control states to maintain a moisture-free environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an encapsulation body is used to seal the OLED display device, then the protection against water and oxygen intrusion is improved, but the sealing effect diminishes over time leading to reduced reliability
Solution Approach 1:
The patent introduces a moisture absorption layer that is pre-configured within the encapsulation body to actively absorb moisture that penetrates through the encapsulation over time. This preliminary action of moisture absorption compensates for the diminishing sealing effect, maintaining reliable protection against water and oxygen intrusion throughout the display device's operational life.
2Reliability
If a moisture absorption layer is added within the encapsulation body, then the moisture removal capability is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the moisture absorption layer within the existing encapsulation body structure, merging the moisture removal function with the protective encapsulation. This combination approach improves moisture removal capability while avoiding significant increases in device complexity, as the moisture absorption layer is incorporated into the already-present encapsulation architecture.
3Reliability
If the encapsulation body is made more robust to prevent moisture intrusion, then the protection level is improved, but the manufacturing difficulty increases
Solution Approach 1:
The patent applies local quality by positioning the moisture absorption layer at specific locations within the encapsulation body where moisture is most likely to accumulate or penetrate. This targeted approach enhances protection levels at critical areas without requiring a complete redesign of the entire encapsulation structure, thereby maintaining ease of manufacture while improving overall protection.
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
Effectively addresses water and oxygen intrusion, extending the lifespan of the display panel by continuously removing moisture, even in complex external environments, thereby ensuring reliable operation.
Implementation Method 1
The power device is disposed inside the first airflow channel. The airflow inside the first airflow channel is operative to provide power to the power device
Implementation Method 2
The rotatable piece also has the Coandă effect
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes: an encapsulation body, at an edge of which is formed a receiving cavity; multiple pixel modules disposed inside the encapsulation body, each being used for individual display; a moisture processing structure partially disposed inside the receiving cavity and forming a gap with the multiple pixel modules. The moisture processing structure includes: a housing, one part of which is connected to the encapsulation body, the other part is exposed outside the encapsulation body; a control device, disposed inside the housing on a side adjacent to the receiving cavity; and a power device, disposed inside the housing on a side facing away from the receiving cavity and configured to provide power to the control device to discharge the moisture from within the receiving cavity to the outside of the housing.