Display Panel Through-Hole Moisture Barrier for Optical Devices
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Solution Overview
Problem
Moisture penetration through the through hole in display devices, where optical electronic devices are positioned, can deteriorate the performance of light emitting elements in subpixels.
Innovation Solution
A display panel design that includes a disconnected structure cutting the light emitting layer between the through hole and active area, and a touch sensor metal on the encapsulation layer to block moisture entry along different paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a through hole is formed in the active area to place an optical electronic device, then light reception is improved and design freedom is enhanced, but moisture penetration risk increases causing performance deterioration
Solution Approach 1:
The light emitting layer is divided into multiple disconnected segments by the first and second rough patterns. These segmented structures create discontinuous barriers that effectively block moisture penetration paths while allowing light transmission, thus resolving the contradiction between maintaining design freedom with through holes and preventing moisture damage.
Solution Approach 2:
The solution introduces vertical layering with multiple rough patterns at different heights and positions. The first rough pattern is positioned at a first height and the second rough pattern at a second height, creating a multi-dimensional barrier system that blocks moisture from multiple directions while preserving the through-hole structure for optical device placement.
2Reliability
If moisture enters the through hole, then the performance of light emitting elements deteriorates, but forming notches or camera holes compromises display area and design
Solution Approach 1:
The rough patterns act as intermediary barrier structures positioned within the through hole area. These patterns block moisture penetration paths without requiring traditional notches or camera holes, thus protecting light emitting elements while maintaining design freedom and display area integrity.
3Object-affected harmful factors
If a disconnected structure cutting the light emitting layer is implemented, then moisture penetration along the first path is blocked, but structural complexity increases
Solution Approach 1:
The rough patterns are implemented locally around the through hole area rather than throughout the entire display structure. The first and second rough patterns are positioned specifically at different heights and locations to block moisture paths, creating localized barriers that prevent moisture penetration without significantly increasing overall structural complexity.
Data Source
AI summary
Aspects of the disclosure relate to a display panel and a display device. The display panel in some examples can include a through hole where an optical electronic device is disposed in a display area, a first rough pattern capable of blocking moisture introduced along a first moisture permeable path in a surrounding area of the through hole, and a second rough pattern disposed to overlap at least a portion of the first rough pattern to block moisture introduced along a second moisture permeable path.