Foldable Display Panel Bonding Area Layout
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Solution Overview
Problem
Foldable display panels face damage when the circuits on opposite sides collide during folding, as they are typically disposed on the periphery and lack adequate spacing to prevent contact.
Innovation Solution
A foldable display panel design with first and second bonding areas spaced apart along a direction, featuring a foldable line through the display area's center, ensuring that these areas do not overlap when folded, thus preventing circuit collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circuits are disposed on the periphery of the display panel to drive the pixel array, then the display functionality is achieved, but the circuits on opposite sides collide and are damaged when the panel is folded
Solution Approach 1:
The patent applies dimensionality change by transitioning from a symmetric peripheral bonding layout to an asymmetric layout where bonding areas are positioned at different distances from the foldable line. Specifically, the first bonding area is positioned at a first distance from the foldable line while the second bonding area is positioned at a second distance that is greater than the first distance, creating spatial separation in the folding dimension to prevent circuit collision while maintaining display functionality
Solution Approach 2:
The patent implements asymmetry by deliberately positioning the first and second bonding areas at unequal distances from the foldable line. The first bonding area is closer to the foldable line than the second bonding area, creating an asymmetric configuration that ensures adequate spacing between opposing circuits during folding, thereby preventing collision damage while preserving the peripheral bonding structure needed for display operation
2Area of stationary object
If bonding areas are positioned close to the foldable line to maximize display area, then the display area is increased, but the circuits may collide during folding
Solution Approach 1:
The patent applies local quality by differentiating the positioning of bonding areas on opposite sides of the foldable line. Instead of symmetric positioning, the first bonding area is positioned at a first distance from the foldable line while the second bonding area is positioned at a second distance greater than the first distance. This localized asymmetry optimizes each bonding area's position independently to prevent circuit collision while maximizing the overall display area
3Ease of operation
If the display panel is made foldable to improve portability, then ease of carrying is improved, but circuits on opposite sides collide and are damaged when folded
Solution Approach 1:
The patent implements preliminary action by pre-positioning the bonding areas at asymmetric distances from the foldable line before the folding operation occurs. The first bonding area is positioned at a first distance and the second bonding area at a second distance greater than the first, creating predetermined spatial separation that prevents circuit collision during the folding process, thereby enabling safe and reliable portable folding operation
Data Source
AI summary
The foldable display panel includes a substrate and a pixel array. The substrate has a surface and display and periphery areas thereon. The periphery area is on at least one side of the display area, and has first and second bonding areas. The first and second bonding areas are at opposite first and second sides of the periphery area, respectively. The first and second bonding areas are spaced apart by a first distance along a first direction. The substrate has a foldable line passing through a center of the display area between the first and the second bonding areas. The first and second sides are on two sides of the foldable line. The pixel array is on the display area and overlaps the foldable line. The pixel array is between the first and second sides and includes sub pixel units arranged in an array.