Sealant Extension on Transparent Layer for Flexible Display Packaging
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Solution Overview
Problem
Conventional flexible display devices face reliability issues due to the sealant slitting when bent, allowing external air or mist to permeate and damage the device, which compromises the packaging reliability.
Innovation Solution
A display device design where the sealant surrounds and covers a predetermined sealing region of the transparent layer, increasing the contact area and enhancing the combination strength between the sealant and other elements, thereby preventing slitting when the device is bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the sealant is formed only on the array substrate surrounding the display medium layer and transparent layer, then the manufacturing process is simple, but the combination strength between the sealant and transparent layer is insufficient causing slitting when bent
Solution Approach 1:
The sealant structure transitions from a single-plane configuration (only on array substrate) to a multi-dimensional configuration by extending onto the transparent layer. This dimensional extension creates overlapping regions where the sealant contacts both the array substrate and transparent layer, significantly enhancing combination strength and preventing slitting during bending.
2Reliability
If the sealant covers only the array substrate, then the packaging reliability is insufficient, but extending the sealant to cover the transparent layer increases the contact area and combination strength
Solution Approach 1:
The sealant structure merges the coverage areas of both the array substrate and transparent layer into a unified sealing system. By forming the sealant to extend from the array substrate onto the transparent layer, the invention creates an integrated sealing structure that combines the advantages of both substrates, achieving high packaging reliability while maintaining manufacturing feasibility.
Data Source
AI summary
A display device includes an array substrate, a display medium layer, a transparent layer and a sealant. The array substrate has a first region and a second region surrounding the first region. The display medium layer is disposed on the array substrate and located in the first region. The transparent layer with an upper surface is disposed on the display medium layer. The upper surface has a display region and a predetermined sealing region surrounding the display region. The sealant is formed on the array substrate and located in the second region. Also, the sealant surrounds the transparent layer and the display medium layer and covers the predetermined sealing region of the transparent layer. In addition, a method for fabricating the display device is also provided. Since the sealant surrounds the transparent layer and the display medium layer and covers the predetermined sealing region of the transparent layer, the packaging performance of the above display device may be improved.