Display Panel Edge Insulation Pattern for Flexible Circuit Support
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Solution Overview
Problem
Display devices face issues with moisture and chemical penetration, wire breakage due to physical impact, and increased dead space, which reduces the image display area.
Innovation Solution
Incorporating an insulation pattern made of organic material along the edges of the display panel, overlapping the flexible printed circuit board, and using an anisotropically conductive layer to connect data pads, while increasing the step difference at the panel's edge to support the circuit board and minimize dead space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dead space around the display panel is increased to accommodate the flexible printed circuit board, then the circuit board can be properly connected, but the area for image display is reduced
Solution Approach 1:
The patent introduces a step difference structure that creates a vertical dimension (height difference) between the display panel and the flexible printed circuit board. This vertical separation allows the circuit board to be positioned without occupying horizontal display area, thus resolving the contradiction between connection reliability and image display area.
Solution Approach 2:
The patent divides the edge region into multiple functional zones: a first edge region with the step difference for mechanical support, and a second edge region for electrical connection. This segmentation allows each zone to perform its specific function without interfering with the other, enabling reliable connection while minimizing dead space.
2Area of stationary object
If the flexible printed circuit board is placed close to the display panel edge, then dead space is reduced, but the board is vulnerable to pressing or bending
Solution Approach 1:
The patent creates a step difference structure that forms a protective barrier before the flexible printed circuit board can be subjected to external forces. This structural feature acts as a cushion that absorbs or distributes pressing forces, preventing bending or damage to the circuit board while maintaining minimal dead space.
3Area of stationary object
If the edge region is used for circuit board connection, then dead space is minimized, but moisture and chemicals can penetrate into the display panel
Solution Approach 1:
The patent applies different structural characteristics to different regions: the first edge region contains the step difference for mechanical support, while the second edge region provides electrical connection. This local differentiation allows each region to address specific concerns (protection vs. connection) without compromising the other, enabling minimal dead space while preventing harmful factor penetration.
Data Source
AI summary
A display device according to an exemplary embodiment includes: a display panel; and a flexible printed circuit board that is connected to the display panel, wherein the display panel includes: a substrate that includes a display area including a plurality of pixels, and a non-display area which is a remaining area of the substrate; an insulation pattern that is disposed along one edge of the display panel and overlaps the flexible printed circuit board; and a data pad that is disposed between the display area and the insulation pattern.