Display Panel Shield Layout for FIAA Data Line Crosstalk
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Solution Overview
Problem
Display panels with Fanout in Array (FIAA) technology experience degraded display due to crosstalk of data signals caused by parasitic capacitance between fanout lines and data lines.
Innovation Solution
Incorporating a shield portion between conductive layers in the display panel structure to insulate and shield overlapping fanout sections and data lines, reducing parasitic capacitance and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fanout lines are placed in the display region to reduce non-display region area, then the narrow frame is achieved, but crosstalk of data signals occurs due to parasitic capacitance between fanout lines and data lines
Solution Approach 1:
A shield line is introduced as an intermediary element between the fanout line and the data line. This shield line acts as a mediator that blocks the electromagnetic field interaction between the fanout line and data line, thereby eliminating the parasitic capacitance and crosstalk while allowing both lines to remain in the display region
Solution Approach 2:
The harmful electromagnetic field interaction is extracted and isolated by introducing the shield line. The shield line captures and contains the electric field between the fanout line and data line, preventing it from causing crosstalk while maintaining the compact layout
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
Improves display quality by minimizing signal interference and enhancing the display performance of the panel.
Implementation Method 1
a third conductive layer disposed between the first conductive layer and the second conductive layer and including a shield portion, where an overlapping portion between one of the first fanout sections and a corresponding one of the data lines insulated from and across the first fanout section overlaps the shield portion
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
The present application provides a display panel and a display device. A first conductive layer includes a plurality of data lines located in a display region. A second conductive layer is located at a side of the first conductive layer and includes a plurality of first fanout sections across more than one of the plurality of data lines located in the display region. One of the first fanout sections is connected to a corresponding one of the data lines. A third conductive layer is disposed between the first conductive layer and the second conductive layer and includes a shield portion. An overlapping portion between one of the first fanout sections and a corresponding one of the data lines insulated from and across the first fanout section overlaps the shield portion.