Flexible Array Substrate Bent Portions Bezel Reduction
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Solution Overview
Problem
Existing flexible display technologies face challenges in achieving a high screen-to-body ratio due to the limitations of bending all edges of the display screen, resulting in a wide bezel on short edges where source driving ICs are placed, which hinders the reduction of the bezel width.
Innovation Solution
A flexible array substrate with bent portions on long edges allows the signal connecting portions to be moved to the back side, enabling the source driving circuit and gate driving circuit to be relocated, thereby reducing the bezel width on long edges and maintaining a narrow bezel design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If source driving ICs are placed on short edges of the display screen, then the electrical connection is ensured, but the bezel width on short edges becomes wide
Solution Approach 1:
The patent moves the source driving ICs from the traditional short edge location to the back side of the display screen by utilizing bent portions on the long edges. This spatial reconfiguration in another dimension (from front edge to back side) allows the short edges to be freed for narrow bezel design while maintaining electrical connections through the flexible substrate's bent regions.
Solution Approach 2:
The patent employs a flexible substrate with bent portions that can be folded or bent to relocate the source driving ICs to the back side. This flexible film structure enables the driving circuits to be positioned away from the front display area, allowing narrow bezels on all edges including short edges, while maintaining functional electrical connections.
2Length of stationary object
If bent portions are added to move signal connecting portions to the back side, then the bezel width is reduced, but the device complexity increases
Solution Approach 1:
The patent divides the substrate into distinct functional regions: a main display area and bent portions extending from long edges. This segmentation allows the signal connecting portions to be separated and relocated to the back side through the bent portions, enabling narrow bezel design while managing structural complexity through clear functional zoning.
Solution Approach 2:
By utilizing the third dimension (depth/back side) through bent portions, the patent relocates signal connecting portions from the front edge to the back side. This dimensional transition reduces bezel width requirements without significantly increasing overall device complexity, as it leverages the existing flexible substrate structure.
Data Source
AI summary
A flexible array substrate has a main display area, and includes a flexible substrate and a plurality of signal connecting portions. The flexible substrate includes at least one bent portion extending from at least one side of the main display area. The plurality of signal connecting portions are disposed at a side of the at least one bent portion away from the main display area. A plurality of signal lines are disposed on a first surface of the flexible substrate in the main display area. The plurality of signal connecting portions are configured to electrically connect the plurality of signal lines to at least one driving circuit. The at least one bent portion is configured to bend toward a second surface of the flexible substrate opposite to the first surface.