Optical Functional Layer Accommodating Portion for Bending Stress
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Solution Overview
Problem
In display devices with bent substrates, the end of the bending protective layer interferes with the optical functional layer, causing stress concentration and potentially lifting the cover member, which compromises the display's quality.
Innovation Solution
A display device design that includes an optical functional layer with an accommodating portion to absorb deformation and a first adhesive member to shield this portion, preventing interference between the bending protective layer and the optical functional layer during substrate bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bending protective layer is arranged on the bent portion of the substrate, then the substrate is protected during bending, but the end of the bending protective layer interferes with the optical functional layer causing stress concentration
Solution Approach 1:
An accommodating portion is introduced as an intermediary structure between the bending protective layer and the optical functional layer. This accommodating portion absorbs the deformation and prevents direct contact/interference between the bending protective layer end and the optical functional layer, thereby eliminating stress concentration while maintaining substrate protection during bending.
2Device complexity
If the end of the bending protective layer contacts the end of the optical functional layer, then the structure is compact, but the cover member is pushed and lifted during bending
Solution Approach 1:
The accommodating portion is designed in advance within the optical functional layer to cushion and absorb the deformation that occurs during bending. This pre-built cushioning structure prevents the cover member from being pushed or lifted by providing a buffer zone that accommodates the bending stress before it reaches the cover member.
3Reliability
If the optical functional layer is made rigid to maintain display quality, then display quality is maintained, but the layer cannot accommodate deformation during bending
Solution Approach 1:
The optical functional layer is designed with non-uniform local properties: most of the layer maintains its original rigid structure to preserve display quality, while a specific localized region (the accommodating portion) is designed to be deformable to accommodate bending. This local differentiation allows the layer to simultaneously maintain overall structural integrity and provide localized flexibility where needed.
Data Source
AI summary
The present disclose provides a display device and a method of manufacturing the same. A display device includes a display panel including a substrate having a bent portion and a bending protective layer arranged on the bent portion of the substrate, and an optical functional layer on the display panel and in contact with the bending protective layer, the optical functional layer having an accommodating portion configured to accommodate deformation of the optical functional layer.