Multi-Layer Data Line Structure for Display Panel Signal Integrity
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Solution Overview
Problem
Conventional display panels face signal degradation issues due to increased load on data lines as the size of the panels grows, leading to negative displaying effects for display units far from driving circuits.
Innovation Solution
The display panel incorporates a first data line electrode layer, a first insulating layer with vias exposing the data lines, and a second data line electrode layer electrically connected through these vias, reducing resistance and signal attenuation by allowing second data lines to correspond directly with first data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If display panel size increases and more display units are disposed in one column, then display area is improved, but data line resistance increases and driving signal degrades
Solution Approach 1:
The data line electrode layer is divided into multiple segments (first data line electrode layer and second data line electrode layer) arranged in different layers. Each segment carries the data signal over a portion of the transmission distance, reducing the total resistance and capacitance any single data line segment must handle, thereby reducing signal degradation in large display panels
Solution Approach 2:
The patent transitions from a single-layer data line structure to a multi-layer structure by adding the second data line electrode layer above the first data line electrode layer. This dimensional change allows data signals to be transmitted through multiple parallel paths in different layers, reducing the effective resistance and improving signal quality across large display areas
2Area of stationary object
If data line transmission distance increases, then display area is improved, but driving signal attenuation increases
Solution Approach 1:
The long data line transmission path is segmented into multiple shorter segments by dividing the data line electrode layer into first and second layers. Each layer handles a portion of the transmission distance, reducing the cumulative resistance and capacitance effects that cause signal attenuation over long distances
Solution Approach 2:
The first data line electrode layer and second data line electrode layer are merged to form a composite data line structure. This combined multi-layer structure provides multiple parallel conduction paths, effectively reducing the total resistance and minimizing signal energy loss during transmission across the display panel
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration decreases the resistance of data lines and improves the displaying effect by ensuring stronger signal transmission across the panel, even for units farther from the driving circuit.
Implementation Method 1
the second data lines are electrically connected with the first data lines through the plurality of first vias, which may decrease the resistance of each data line in the display panel
Data Source
AI summary
Display panel and displaying device are provided. Except for a first data line electrode layer on a first substrate, a display panel further includes a first insulating layer on the first data line electrode layer and a second data line electrode layer on the first insulating layer. The first data line electrode layer includes a plurality of first data lines, and the second data line electrode layer includes a plurality of second data lines respectively corresponding to the first data lines. A plurality of vias are disposed in the first insulating layer and expose a portion of the first data lines. The second data lines are electrically connected with the first data lines through the vias, which may decrease resistance of each data line, reduce the attenuation of a driving signal transmitted in the data lines far away from a driving circuit, and improve displaying effect of the display panel.