OLED Display Panel Separation Groove for Erosion Protection
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Solution Overview
Problem
OLED display panels with openings are prone to water and oxygen penetration, leading to erosion and degradation of the display device due to the existing methods' inefficiencies in blocking these elements.
Innovation Solution
A display panel design featuring a substrate with a separation groove system, including a first and second groove body, where the light-emitting layer is discontinuous in the second groove body, and a through hole in the opening area that penetrates both the display and driving layers, effectively blocking water and oxygen ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If an opening is formed in the display panel to reduce edge width, then the edge width is reduced and device integration is improved, but water and oxygen penetration increases leading to display device erosion
Solution Approach 1:
The separation groove divides the display panel structure into distinct regions, creating a barrier that segments the path between the opening and the display area. This segmentation prevents continuous water and oxygen penetration routes while maintaining the opening for device integration.
Solution Approach 2:
The separation groove acts as an intermediary barrier structure between the opening and the display area. It provides a protective interface that blocks harmful water and oxygen molecules from reaching the display device, while allowing the opening to maintain its functional purpose.
2Reliability
If a separation groove is introduced to block water and oxygen, then protection against erosion is improved, but the structural complexity of the display panel increases
Solution Approach 1:
The separation groove is implemented as a thin film or shell-like structure within the display panel layers. This approach provides effective erosion protection through the barrier function of the groove while minimizing the addition of bulky or complex structural elements.
Solution Approach 2:
The separation groove utilizes the vertical dimension by extending through multiple layers of the display panel structure. This dimensional approach creates an effective barrier against water and oxygen penetration without significantly increasing the planar footprint or overall device complexity.
3Object-affected harmful factors
If the light-emitting layer is made discontinuous in the separation groove, then water and oxygen blocking is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The separation groove structure is formed in advance during the manufacturing process, creating a pre-defined barrier path. This preliminary structure guides the subsequent formation of the discontinuous light-emitting layer, making it easier to control the discontinuity and maintain manufacturing precision.
Solution Approach 2:
The light-emitting layer is made discontinuous specifically at the location of the separation groove, while maintaining continuity in other areas. This localized discontinuity approach provides targeted water and oxygen blocking where needed, without requiring precision control across the entire display panel.
Data Source
AI summary
The present disclosure relates to a display device, a display panel, and a manufacturing method thereof. The display panel includes a substrate, a driving layer, and a display layer. The substrate has an opening area, a transition area surrounding the opening area, and a display area surrounding the transition area. The driving layer is disposed on a side of the substrate and covers at least the transition area and the display area, an area of the driving layer being located in the transition area being provided with a separation groove surrounding the opening area, the separation groove including a first groove body and a second groove body sequentially communicated toward the substrate in a direction perpendicular to the substrate, and a distance between bottom ends of side walls of the first groove body being smaller than a distance between top ends of side walls of the second groove body.