OLED Display Panel Ring Groove Insulation for Under-screen Camera
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Solution Overview
Problem
The existing under-screen camera type OLED display panels face package failure due to exposure of the organic light emitting layer during the cutting process, allowing moisture and oxygen to seep in.
Innovation Solution
A display panel design featuring a perimeter region with ring grooves in the inorganic and organic insulating layers, which prevents the organic light emitting layer from being exposed and ensures the film packaging layer remains closed, forming an inorganic stacked structure to prevent moisture and oxygen ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a through hole is formed by cutting a corresponding portion in the hole region to expose the camera component, then the under-screen camera function is achieved, but the organic light emitting layer is exposed to air causing moisture and oxygen ingress and package failure
Solution Approach 1:
The insulating layer is segmented by forming a ring groove that divides it into an inner portion and an outer portion. This segmentation allows the inner portion to be removed for camera access while the outer portion remains to provide protective encapsulation, preventing moisture and oxygen ingress to the organic light emitting layer.
Solution Approach 2:
The solution transitions from a planar hole structure to a three-dimensional ring groove structure. The ring groove extends vertically into the insulating layer, creating a stepped configuration that allows the film packaging layer to overlap and encapsulate the organic light emitting layer at the hole region, adding a vertical dimension to the protection mechanism.
2Ease of manufacture
If the organic light emitting layer is exposed during cutting to form the through hole, then camera component access is enabled, but moisture and oxygen seep in causing package failure
Solution Approach 1:
The ring groove is formed in the insulating layer before the through hole cutting process. This preliminary action creates a protective structure that guides and limits the cutting process, ensuring that the organic light emitting layer is not exposed to air during manufacturing while still allowing camera component access.
Solution Approach 2:
The ring groove structure acts as an intermediary between the需要通过的孔和需要保护的有机发光层。它提供了一个过渡结构，使得可以在不暴露有机发光层的情况下实现相机组件的接入。
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a display region, a perimeter region, and a hole region. The display panel further comprises an inorganic insulating layer, an organic insulating layer, an organic light emitting layer and a film packaging layer stacked. The organic light emitting layer is disposed correspondingly to the display region. At least one ring groove is defined in the inorganic insulating layer and/or the organic insulating layer corresponding to the perimeter region. A portion of the film packaging layer corresponding to the ring groove is closely contacted to the inorganic insulating layer and/or the organic insulating layer.