Notched Display Panel Structure for Impact-Robust FPC Attachment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face reliability issues due to vulnerability to external impacts, which can cause damage to the flexible circuit board attachments and increase the defective rate, particularly because the end portions of the display panel lack sufficient rigidity.
Innovation Solution
The display device incorporates a design with a lower substrate having a peripheral area with notches in the upper substrate, allowing the driving circuit and flexible circuit board to overlap the notches, and a coupling member that extends in a straight line to enhance the rigidity of the end portions, thereby protecting the panel from external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper substrate is made with a notch to allow driving circuit and flexible circuit board to overlap, then the reliability is improved, but the structural complexity increases
Solution Approach 1:
The upper substrate is segmented by introducing a notch that divides it into distinct regions: a first region that overlaps the active area and a second region that overlaps the peripheral area. This segmentation allows the driving circuit and flexible circuit board to be positioned in the peripheral area without interfering with the active display area, thereby improving reliability while maintaining a manageable structural complexity through functional zonation.
Solution Approach 2:
The notch acts as an intermediary structure that mediates between the upper substrate and the components below (driving circuit and flexible circuit board). By creating this intermediate space, the design allows these components to overlap the peripheral area without requiring the upper substrate to be completely removed or redesigned, thus improving reliability while avoiding excessive structural complexity.
2Reliability
If the end portions of the display panel are made more rigid to protect from external impacts, then the reliability is improved, but the flexibility and ease of manufacture decrease
Solution Approach 1:
The upper substrate is designed with non-uniform thickness distribution, creating regions of different rigidity: the first region overlapping the active area has different thickness characteristics than the second region overlapping the peripheral area. This local quality variation provides enhanced rigidity and impact resistance at the end portions (peripheral area) while maintaining ease of manufacture through a single substrate structure that can be produced using standard manufacturing processes.
Data Source
AI summary
A display device includes a lower substrate including an active area and a peripheral area, a driving circuit electrically connected to a pixel, an upper substrate provided with a notch recessed in a first direction, and a flexible circuit board. The driving circuit and the flexible circuit board overlap the notch. The upper substrate includes an upper edge including a notch area and a straight area extending from the notch area. The notch area includes a first area, a second area facing the first area in a second direction crossing the first direction, and a third area disposed between the first area and the second area and extending in the second direction. An end portion of each of the first and second areas adjacent to the third area has a predetermined curvature, and an opposite end portion of each of the first and second areas has a predetermined curvature.