Bent Display Substrate with Graphene Release Layer for Narrow Bezel
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Solution Overview
Problem
Existing display devices with narrow bezels face challenges in manufacturing due to wirings, driving circuits, and sealing members in the non-display area, making it difficult to achieve a slim and lightweight design with reduced bezel width.
Innovation Solution
A display device design featuring a first substrate with a display area and a non-display area, including a bent portion inclined to the display area plane, and a method of manufacturing involving a release layer with graphene, allowing for the bending of substrates and wiring portions to minimize bezel width and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the non-display area is reduced to achieve a narrow bezel, then the bezel width is reduced, but the wirings and driving circuits become more difficult to arrange and manufacture
Solution Approach 1:
The patent applies dimensionality change by bending the first substrate and wiring portions along a bending line in the non-display area, transitioning from a 2D planar arrangement to a 3D folded structure. This allows the wirings and driving circuits to be arranged in the bent portion rather than extending horizontally in the non-display area, thereby reducing the bezel width while maintaining sufficient space for all necessary components and connections.
Solution Approach 2:
The patent utilizes curvature by introducing a bending line that creates a folded or curved configuration in the non-display area. The first substrate and wiring portions are bent along this line, forming a non-planar structure that accommodates the driving circuits and connections within a smaller horizontal footprint, thus reducing the visible bezel width while preserving functional requirements.
2Volume of moving object
If the substrate is bent to reduce bezel size, then the bezel width and device thickness are reduced, but the structural complexity and manufacturing process difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the first substrate into distinct regions: a display area and a non-display area with a bending line. The bending line is specifically positioned in the non-display area, segmenting the substrate so that the complex bent structure is isolated to a specific region while the display area remains planar and simple. This segmentation localizes the structural complexity to where it is most beneficial for reducing bezel size.
Solution Approach 2:
The patent introduces a bending line as an intermediary element that mediates between the planar display area and the folded non-display area. This bending line serves as a transition zone that allows the substrate to fold without creating excessive stress or complexity in the display area, thereby reducing overall device thickness while managing structural complexity through a defined intermediate structure.
3Length of stationary object
If the bending line is positioned closer to the display area boundary, then the bezel width is further reduced, but the risk of damage to the display element increases
Solution Approach 1:
The patent applies local quality by positioning the bending line specifically in the non-display area with a controlled distance from the display area boundary. This creates different structural qualities in different regions: the display area maintains high reliability with a planar structure, while the non-display area accepts the folded structure for bezel reduction. The local quality principle allows the bending line to be optimally positioned to balance bezel width reduction with display element protection.
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 enables the creation of display devices with a significantly reduced bezel size, improved user immersion, and thinner profiles by bending substrates and wiring portions during manufacturing, addressing the challenges of bezel width and device thickness.
Implementation Method 1
forming a release layer including graphene, on a support substrate; disposing a first substrate of a display device which displays an image at a display area of the first substrate, on the release layer on the support substrate; separating the release layer together with the support substrate from the first substrate including the display element formed thereon
Data Source
AI summary
A display device includes: a first substrate including a display area at which an image is displayed, a non-display area adjacent to the display area, and a first bent portion in the non-display area thereof, the first bent portion disposed in a plane inclined to a plane in which the display area is disposed; a second substrate opposing the first substrate; and a sealing portion which is disposed in the non-display area and attaches the first substrate and the second substrate to each other.