Bendable Display Panel Wiring Crack Prevention
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Solution Overview
Problem
Existing display devices face challenges in minimizing the risk of crack formation in wirings when the display panel is bent, while also reducing thickness and manufacturing costs.
Innovation Solution
A display device design that includes a display panel with a first area for the display, a second area spaced apart, and a bendable third area with a gap between the first and second areas. This design features a bonding layer in the second and third areas, with a first support film in the second area and a second support film in the third area, both bonded to the bonding layer. The second support film is positioned to contact the panel bottom cover, reducing stress and preventing crack formation during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a display panel is bent to reduce thickness, then the thickness of the display device is reduced, but crack formation in wirings occurs
Solution Approach 1:
The display panel is divided into three distinct areas: a first area with a display area, a second area spaced apart from the first area, and a bendable third area located between them. This segmentation allows the panel to be bent in the third area while protecting the wirings in the first and second areas from crack formation.
Solution Approach 2:
A bonding layer is disposed in the second area and the third area, bonded to a first support film in the second area and a second support film in the third area. This bonding layer acts as an intermediary that maintains structural integrity during bending, preventing crack formation in the wirings while enabling thickness reduction through bending.
2Reliability
If support films are added to prevent crack formation, then reliability is improved, but device complexity increases
Solution Approach 1:
The bonding layer is selectively disposed only in the second area and the third area, and the support films are positioned specifically in areas where they are needed for crack prevention. This local application of support structures improves reliability without unnecessarily increasing overall device complexity.
Solution Approach 2:
The bonding layer simultaneously bonds both the first support film in the second area and the second support film in the third area, merging multiple support functions into a single integrated structure. This reduces the number of separate components needed, thereby reducing device complexity while maintaining reliability.
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 proposed solution effectively reduces the risk of crack formation in display panel wirings when bent, while also reducing the overall thickness and manufacturing costs of the display device. The design allows for symmetrical bending of structures and improved support for the panel bottom cover, maintaining structural integrity.
Implementation Method 1
a bonding layer disposed in the second area and the third area of the display panel and located on a first surface of the display panel
Data Source
AI summary
A display device comprises a display panel comprising a first area comprising a display area, a second area spaced apart from the first area, and a bendable third area between the first area and the second area; a bonding layer in the second area and the third areal and located on a first surface of the display panel; an panel bottom cover in the first area of the display panel and located on the first surface; a first support film in the second area and bonded to the bonding layer; a second support film in the third area and bonded to the bonding layer; and a gap in the third area and separating the first support film from the second support film.