Flexible OLED Display Cover Layer Mounting via Rigid Support
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Solution Overview
Problem
Conventional displays, such as LCDs, require wide inactive border areas due to adhesive failure when device components exert pulling forces, making them bulky and aesthetically unappealing.
Innovation Solution
Flexible OLED displays with transparent adhesives that extend across the entire surface, allowing device components to be attached directly to the display, reducing the need for wide bezels and inactive border areas by using a rigid support structure mounted to the device housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display cover layers are mounted directly to device housings, then adhesive bonds are robust, but wide inactive border areas are required
Solution Approach 1:
A rigid support structure is introduced as an intermediary between the display cover layer and the device housing. The display cover layer is mounted to the rigid support structure with adhesive, which is then mounted to the device housing. This intermediary structure allows the adhesive to be positioned away from the housing edges, enabling smaller inactive border areas while maintaining robust adhesive bonds.
2Ease of manufacture
If adhesive is confined to the periphery of the display, then mounting is simpler, but adhesive bonds fail under pulling forces
Solution Approach 1:
The adhesive bonding is transitioned from a two-dimensional peripheral application to a three-dimensional structure where the rigid support structure provides additional mounting surfaces. The adhesive can be applied to the rigid support structure in areas that do not correspond to the display periphery, distributing forces more effectively and improving bond reliability under pulling forces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach minimizes the inactive border region, enhancing the aesthetic appearance and internal strength of electronic devices while maintaining robust adhesive bonds for component attachment.
Implementation Method 1
Flexible OLED displays may include display layers that are bonded together using transparent adhesives. The transparent adhesive layers in a display can extend across substantially the entire surface of the display and need not be confined to the periphery of the display.
Data Source
AI summary
An electronic device may be provided with a display cover layer mounted to the device using an adhesive bond with a display. The display may be a flexible display. The flexible display may include Organic Light Emitting Diode display technology. The display may be mounted to a rigid support structure. The rigid support structure may be mounted to a device housing member. Mounting the display cover layer to the display may eliminate the need to mount the display cover layer to the device housing and may allow active display pixels to be visible under the display cover layer closer to the device housing than in conventional devices. Providing the electronic device with active display pixels closer to the device housing may reduce the need for an inactive border around the display and may improve the aesthetic appeal of the electronic device.