Display Panel Connection Electrode Wrapping Signal Line
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Solution Overview
Problem
Display devices face issues with increased bezel area due to side bonding methods, which lead to higher signal line resistance and line image defects caused by luminance differences between pixels.
Innovation Solution
A display panel design with a connection electrode that covers the outer side and upper surface of the signal line, increasing the contact area and reducing resistance, comprising a side electrode pattern and an insertion electrode pattern that connect between the substrates, and optionally includes auxiliary signal lines and electrode lines with passivation layers to enhance contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a side bonding method is used to reduce bezel area, then the bezel area is reduced, but the signal line resistance increases causing line image defects
Solution Approach 1:
The connection electrode transitions from a single-plane connection to a three-dimensional structure that wraps around the signal line. The electrode extends along the outer side of the signal line and inserts between substrates to contact the upper surface, creating multi-dimensional contact paths that reduce resistance while maintaining compact bezel area.
Solution Approach 2:
The connection electrode is inserted between the upper and lower substrates, nesting the electrode within the substrate assembly. This allows the electrode to access and contact the signal line from the side while remaining contained within the overall device structure, achieving low resistance connection without increasing bezel area.
2Device complexity
If the connection electrode contacts only the outer side of the signal line, then the structure is simple, but the contact area is insufficient leading to high resistance
Solution Approach 1:
The connection electrode contacts the signal line in multiple dimensions: along the outer side surface and by inserting between substrates to contact the upper surface. This multi-dimensional contact approach significantly increases the contact area and electrical conductivity without requiring excessive structural complexity.
Data Source
AI summary
A display panel and a display device comprising the same are disclosed, in which a contact area between a connection electrode and a signal line is increased to reduce the contact resistance thereof and to improve picture quality.