Stretchable Display Panel Connection Lines With Oblique Extensible Portions
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Solution Overview
Problem
Existing stretchable display panels suffer from poor tensile properties due to limited elongation of connection lines, which restricts the stretchability and functionality of the display apparatus.
Innovation Solution
Incorporating extensible portions in the connection lines of the stretchable display panel, oriented obliquely relative to the display surface, to enhance the elongation capacity and improve tensile properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If connection lines are made longer to increase stretchability, then the tensile property improves, but the manufacturing precision and structural stability deteriorate
Solution Approach 1:
The connection line is designed with a three-dimensional structure including an extensible portion that protrudes from the first surface. This vertical dimension allows the connection line to accommodate stretching deformation through the extensible portion's movement, while maintaining precise positioning in the planar view. The oblique extension in the vertical direction provides elongation capacity without compromising the horizontal positioning precision of the connection line on the first surface.
Solution Approach 2:
The connection line is divided into distinct segments: a first portion on the first surface and a second portion (extensible portion) protruding from the first surface. This segmentation allows each portion to serve its specific function - the first portion maintains positioning precision while the second portion provides stretchability through its oblique extension and movement capability.
2Adaptability or versatility
If the display panel is stretched to increase display area, then the adaptability improves, but the connection line breaks due to insufficient elongation capacity
Solution Approach 1:
The extensible portion protrudes from the first surface in a direction perpendicular to the display surface, creating a third dimension for deformation. When the display panel is stretched, the extensible portion can move along its oblique extension direction, absorbing the stretching stress and preventing the connection line from breaking while maintaining display area flexibility.
Solution Approach 2:
The extensible portion is designed with dynamic characteristics, being movable relative to the first surface along its oblique extension direction. This dynamic capability allows the connection line to adapt to stretching movements, maintaining integrity while enabling the display panel to achieve greater display area flexibility.
3Adaptability or versatility
If extensible portions are added to connection lines to improve tensile property, then the stretchability improves, but the device complexity increases
Solution Approach 1:
The extensible portion is formed by extending the connection line in a direction perpendicular to the first surface, utilizing the vertical dimension to provide stretchability. This approach adds tensile property without significantly increasing planar complexity, as the extensible portion simply protrudes and moves vertically rather than requiring complex lateral structures.
Solution Approach 2:
The extensible portion is formed as a thin, flexible structure that can move relative to the first surface. This thin-film-like structure provides the necessary flexibility for stretching while minimizing the added complexity compared to rigid or multi-component solutions.
Data Source
AI summary
A stretchable display panel includes an island area and a bridge area that are connected. The island area includes a display structure. The stretchable display panel further includes a first support layer and a first connection line. The first support layer includes a first surface located in the bridge area. The first connection line is connected to the display structure. The first connection line passes through the first surface, a portion of the first connection line located on the first surface includes extensible portion(s), and an extensible portion is arranged obliquely relative to a display surface of the stretchable display panel.