Display Module Support Layer Thickness Variation for Narrow Frames
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Solution Overview
Problem
Current flexible display modules face a technical challenge in reducing the thickness of stack layers to achieve narrow frames, which compromises their strength and leads to potential bonding issues and defects.
Innovation Solution
A display module design featuring a support layer with a first support part thicker than a second support part, where the second support part is thinner near the bending area, allowing for reduced frame width while maintaining structural integrity through a reinforcing layer and strategic fixing slots and keys, ensuring the first support part can still provide adequate support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of the support layer is reduced to achieve narrow frames, then the frame width is reduced, but the strength of the display module declines
Solution Approach 1:
The support layer is designed with different thicknesses in different regions: the first support part has a first thickness while the second support part has a second thickness that is less than the first thickness. This local quality variation allows the frame width to be reduced in the bending area while maintaining adequate strength in the non-bending areas, resolving the contradiction between narrow frame and structural strength.
2Shape
If the thickness of the stack layers is reduced to reduce bending radius, then the bending performance is improved, but the strength of the flexible display module declines
Solution Approach 1:
The support layer implements local quality by having different thicknesses in different regions. The thinner second support part in the bending area enables smaller bending radius and better flexibility, while the thicker first support part in non-bending areas maintains structural strength. This resolves the contradiction between bending performance and overall strength.
3Length of stationary object
If the thickness of the support layer is uniformly reduced, then the frame width is reduced, but bonding quality deteriorates due to increased stress concentration
Solution Approach 1:
By making the support layer thickness non-uniform with a thicker first support part and thinner second support part, the design locally reinforces areas prone to stress concentration. This prevents bonding quality deterioration while still achieving narrow frames in the bending region, resolving the contradiction between frame width and bonding reliability.
Data Source
AI summary
The present application provides a display module and a mobile terminal. The display module includes a display panel and a support layer. The display panel includes a first plane part, a second plane part and a bending part. The support layer is located between the first plane part and the second plane part. The support layer includes a first support part and a second support part. The second plane part corresponds to the second support part. In a light-emitting direction of the display panel, a thickness of the first support part is greater than a thickness of the second support part.