Adhesive Layer Fills Separation Space in Bendable Display
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Solution Overview
Problem
Bendable display panels face challenges in maintaining structural integrity and preventing damage from stress and static electricity when bent, particularly due to the gap between the polarization layer and the protection layer.
Innovation Solution
A display device design that includes a protection layer on the bending part and adjacent regions of the display panel, with an adhesive layer covering the separation space between the polarization layer and the protection layer to block external interference and stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a protection layer is disposed on the bending part, then stress resistance and crack prevention are improved, but the separation space between the polarization layer and protection layer creates vulnerability to static electricity and external interference
Solution Approach 1:
An adhesive layer is introduced as an intermediary substance between the polarization layer and protection layer. This adhesive layer fills and blocks the separation space, preventing static electricity and external interference from reaching internal components while maintaining the stress-resistant protective function of the protection layer.
2Ease of manufacture
If the polarization layer is separated from the protection layer, then manufacturing flexibility is improved, but the gap allows static electricity and external factors to damage internal components
Solution Approach 1:
The adhesive layer serves as a mediating substance that fills the separation space between the polarization layer and protection layer. This allows the layers to be manufactured separately with ease while the adhesive blocker prevents harmful factors like static electricity from penetrating through the gap to damage internal components.
3Reliability
If multiple adhesive layers are used to block the separation space, then protection against harmful factors is improved, but device complexity increases
Solution Approach 1:
Instead of using multiple thick adhesive layers, the patent applies a single adhesive layer with sufficient thickness to completely fill and block the separation space. This partial action approach achieves effective blocking of harmful factors while avoiding the complexity of multiple layered adhesive structures.
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
The solution effectively reduces stress on the bending part, prevents cracks in the display panel, and shields the internal components from static electricity, enhancing the durability and reliability of the display device when bent.
Implementation Method 1
At least one adhesive layer is disposed on the polarization layer. At least one adhesive layer includes a first portion overlapping the polarization layer, a second portion covering a part of the protection layer on the first region, and a third portion disposed between the first portion and the second portion and disposed on a separation space between the polarization layer and the protection layer.
Data Source
AI summary
A display device according to an embodiment of the present disclosure includes a display panel including a first region, a second region, and a bending part disposed therebetween. A protection layer is disposed on the bending part and apart of the first region adjacent to the bending part. A polarization layer is disposed on the first region and is separated from the protection layer. At least one adhesive layer is disposed on the polarization layer. The at least one adhesive layer includes a first portion overlapping the polarization layer, a second portion covering a part of the protection layer on the first region, and a third portion disposed between the first portion and the second portion and disposed on a separation space between the polarization layer and the protection layer.