OLED Screen Sealing Structure for Narrow Black Edges
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Solution Overview
Problem
Existing OLED displays face challenges in reducing the size of black edges around the screen while ensuring waterproof sealing, as blindly reducing these edges can lead to poor sealing and liquid ingress, affecting functionality.
Innovation Solution
The OLED display apparatus employs a side sealant, seam sealant, and transition connecting adhesive to form a complete sealing structure, eliminating the need for a support structure on the side plate, thereby reducing black edge sizes and enhancing waterproof performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support structure is retained on the side plate to ensure sealing, then waterproof sealing is improved, but the black edge size increases affecting aesthetics
Solution Approach 1:
The patent removes the support structure from the side plate, extracting the problematic element that caused large black edges. Instead, a new sealing structure is introduced using sealant layers and adhesive layers that achieve waterproof sealing without requiring the traditional support structure, thus reducing black edge size while maintaining reliability
Solution Approach 2:
The patent changes the sealing mechanism from structural support to chemical bonding using sealant and adhesive layers. By transitioning from mechanical support to material-based sealing, the black edge size is reduced while waterproof sealing is maintained through the properties of the sealant and adhesive materials
2Area of stationary object
If the black edge size is reduced to improve aesthetics, then appearance is improved, but sealing performance deteriorates causing liquid ingress
Solution Approach 1:
The patent divides the sealing function into multiple segments: a first sealant layer for primary sealing, a first adhesive layer for bonding, a second sealant layer for additional sealing, and a second adhesive layer for structural adhesion. This segmented approach allows each layer to contribute to sealing performance while maintaining a compact structure with reduced black edges
Solution Approach 2:
The patent uses composite material structures combining different types of sealant and adhesive layers. This composite approach leverages the complementary properties of different materials to achieve both reduced black edge size and maintained sealing performance, as each material contributes specific functional properties to the overall sealing system
3Area of stationary object
If the support structure is removed to reduce black edge size, then aesthetics are improved, but device complexity increases due to additional sealant and adhesive layers
Solution Approach 1:
The patent merges multiple functions into the sealant and adhesive layers: sealing, bonding, and structural support are all achieved through these material layers rather than requiring separate mechanical support structures. This consolidation reduces black edge size while the integrated nature of the layers helps manage complexity by combining multiple functions into unified components
Data Source
AI summary
An OLED display apparatus is provided, which includes a middle frame and an OLED screen. The middle frame includes a support structure for supporting the OLED screen. The OLED screen includes a super clean foam, a display layer, and a packaging cover plate. The super clean foam is adhered to a bottom plate of the middle frame by using an adhesive. The OLED screen is provided with a side sealant at least in a portion corresponding to a head area, and the side sealant is adhered to a side end surface of the super clean foam, a side end surface of the display layer, and a surface of the packaging cover plate and facing the bottom plate. The OLED screen is adhered to the support structure by using a seam sealant. A transition connecting adhesive connects the side sealant and the seam sealant.