Flexible Display Panel Bending Area Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display panels face defects and reliability issues due to bending, particularly in the encapsulation substrate and emissive layer, leading to cracks and dark spots when a display area is bent.
Innovation Solution
A flexible display panel design featuring a first and second display area with a bending area in between, where the second area is formed on lateral sides, allowing for both top and lateral emission, and incorporating a driving circuit unit in the bending area to reduce dead space and prevent defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a display area is located in the bent portion of the flexible display panel, then the display area can be expanded to lateral sides, but cracks are generated in the encapsulation substrate leading to deterioration and dark spot defects
Solution Approach 1:
The flexible display panel is divided into distinct functional areas: a first display area on the front surface, a bending area, and a second display area on the lateral side surface. This segmentation isolates the display functionality from the bending stress zone, preventing cracks in the encapsulation substrate while maintaining expanded display coverage.
Solution Approach 2:
The display area extends from the front surface (first area) to the lateral side surface (second area) by utilizing the bent portion as a transitional bending area. This three-dimensional arrangement allows the display to wrap around the edge of the flexible substrate, increasing total display area without placing display elements in the high-stress bending zone.
2Area of stationary object
If the bending area is used for display purposes, then display area is increased, but defects and reliability problems occur due to cracking in the encapsulation substrate
Solution Approach 1:
The panel is segmented into a first area for front display, a bending area for structural transition, and a second area for lateral display. This segmentation ensures that the bending area serves purely as a structural connector, free from display elements that would be vulnerable to cracking, while still enabling expanded display coverage through the second area.
Solution Approach 2:
The bending area acts as an intermediary zone connecting the front surface (first area) and the lateral side surface (second area). It serves as a structural transition region that accommodates bending stress without containing display elements, thereby preventing cracks while enabling the display to extend to the lateral side.
3Ease of manufacture
If traditional flat display structure is used, then manufacturing is simpler, but dead space is increased and aesthetic appearance is reduced
Solution Approach 1:
The display transitions from a traditional two-dimensional flat structure to a three-dimensional structure that wraps around the edge of the flexible substrate. The second display area is positioned on the lateral side surface, utilizing the vertical dimension created by bending to reduce dead space and improve aesthetic appearance while maintaining manufacturing feasibility.
Data Source
AI summary
A flexible display panel including: a flexible substrate comprising a first area and a second area, wherein the first area is formed in a first direction, and the second area is formed in a second direction that is different from the first direction; a first display area formed on the first area of the flexible substrate; a second display area formed on the second area of the flexible substrate; a bending area formed between the first display area and the second display area; and an encapsulation substrate encapsulating at least the first display area and the second display area. Accordingly, as a display area is not formed in a bent portion, display defects due to bending may be prevented.