Flexible Display Module Bezel Reduction With Grooved Heat Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display modules with flexible display panels and protective covers face challenges in achieving a narrow bezel design and high screen-to-body ratio due to insufficient space utilization in the bending region, leading to a wide overall bezel and reduced user experience.
Innovation Solution
The design incorporates a protective cover with a bending portion and a metal heat-dissipation layer featuring hollowed-out grooves arranged in arrays, allowing the edge of the flexible display panel to extend into the bending portion, along with a support layer and alignment structures to ensure flatness and alignment, thereby reducing the bezel width and improving the screen-to-body ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the flexible display panel edge is extended into the bending portion to reduce bezel width, then the screen-to-body ratio is improved, but wrinkles may occur on the display panel surface
Solution Approach 1:
The patent applies local quality by creating hollowed-out grooves at specific locations on the metal heat-dissipation layer (at the edge portion) while keeping the central portion solid. This localized structural modification allows the edge portion to be compressed into the bending portion without causing wrinkles on the display panel, while maintaining heat dissipation functionality. The hollowed-out structure provides local compliance that accommodates the bending deformation.
Solution Approach 2:
The patent changes the physical structure parameter of the metal heat-dissipation layer by hollowing out grooves, transforming it from a solid continuous structure to a structure with localized voids. This parameter change enables the edge portion to deform elastically during bending without transferring excessive stress to the display panel, thereby preventing wrinkle formation while still achieving narrow bezel.
2Length of stationary object
If the metal heat-dissipation layer edge is compressed into the bending portion, then the overall bezel width is reduced, but the heat dissipation area is decreased
Solution Approach 1:
The hollowed-out grooves are strategically positioned only at the edge portion of the metal heat-dissipation layer, leaving the central portion solid and intact. This localized modification allows the edge to be compressed into the bending portion for narrow bezel design, while the central solid portion maintains adequate heat dissipation area. The hollowed-out regions provide structural compliance without significantly compromising overall thermal management.
3Manufacturing precision
If the hollowed-out grooves are made deeper or wider, then the wrinkle prevention effect is enhanced, but the heat dissipation performance deteriorates
Solution Approach 1:
The hollowed-out grooves are designed with specific dimensions and positioning at the edge portion only, creating localized compliance zones that prevent wrinkles without significantly impacting the central heat dissipation area. The grooves provide just enough structural flexibility at the critical edge region while maintaining adequate thermal conduction path through the solid central portion of the metal layer.
Solution Approach 2:
The hollowed-out grooves are designed with moderate depth and width that provide sufficient compliance for wrinkle prevention during bending, but are not excessive enough to significantly compromise heat dissipation. The partial hollowing out at the edge portion achieves the necessary deformation accommodation while leaving the majority of the heat dissipation functionality intact through the solid central region.
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 results in a display module with a narrow overall bezel, enhanced user experience, and improved heat dissipation while minimizing the occurrence of wrinkles and ensuring uniform flatness and alignment of the flexible display panel.
Implementation Method 1
the metal heat-dissipation layer is attached to a side, going away from the protective cover, of the flexible display panel
Data Source
AI summary
A display module, including: a protective cover, a flexible display panel, and a metal heat-dissipation layer. The protective cover includes a main body portion in the shape of a circular plate and a bending portion distributed around the main body portion. The bending portion is fixedly connected to an edge of the main body portion. A light-exit side of the flexible display panel is attached to the protective cover. An orthographic projection of an edge portion of the flexible display panel on the protective cover is within the bending portion. The metal heat-dissipation layer is attached to a side, going away from the protective cover, of the flexible display panel. An orthographic projection of an edge portion of the metal heat-dissipation layer on the protective cover is within the bending portion. The edge portion of the metal heat-dissipation layer has a plurality of hollowed-out grooves arranged in arrays.