Display Panel Grid Interconnect Layout for Uniform Signal Voltage
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Solution Overview
Problem
Display panels experience uneven voltage distribution due to voltage drops in signal lines, leading to inconsistent display performance.
Innovation Solution
A display panel design featuring a base substrate with multiple conductive layers, including a third conductive layer with signal lines and a fourth conductive layer with connection line segments that intersect and connect to the signal lines through via holes, forming a grid structure to reduce voltage drops and improve uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are used to transmit power and signals across the display panel, then the display panel can be powered and controlled, but voltage drops occur in the signal lines causing uneven voltage distribution and inconsistent display performance
Solution Approach 1:
The patent divides the continuous signal line into multiple segmented conductive layers (third conductive layer with signal lines and fourth conductive layer with connection line segments) connected through via holes. This segmentation creates multiple parallel current paths, reducing the overall resistance and voltage drop in the signal transmission path, thereby improving voltage distribution uniformity across the display panel.
Solution Approach 2:
The patent transitions from a single-plane signal line to a multi-layer three-dimensional conductive structure. By adding the fourth conductive layer above the third conductive layer and connecting them through via holes, the current can flow in multiple spatial dimensions, creating additional current paths that reduce resistance and voltage drop.
2Reliability
If the display panel uses a simple single-layer conductive structure, then the manufacturing process is simpler, but voltage drops cause uneven displaying
Solution Approach 1:
The conductive structure is segmented into multiple functional layers: the third conductive layer contains the main signal lines, while the fourth conductive layer contains connection line segments that intersect and connect to the signal lines through via holes. This segmentation allows each layer to have optimized functions, improving voltage distribution while maintaining manageable complexity through clear functional separation.
Solution Approach 2:
The multi-layer conductive structure serves multiple functions simultaneously: the third conductive layer provides primary signal transmission, the fourth conductive layer provides additional current paths through connection line segments, and the via holes provide vertical interconnection. This multi-functionality addresses voltage drop issues while the structured design keeps manufacturing complexity manageable.
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
The design effectively reduces voltage drops in signal lines, enhancing display uniformity and reducing impedance loading, thereby improving the overall performance of the display panel.
Implementation Method 1
a same one of the connection line segments is connected to multiple ones of the first signal lines through via holes, respectively
Data Source
AI summary
A display panel includes: a base substrate, a third conductive layer, and a fourth conductive layer. The third conductive layer is located on one side of the base substrate and includes multiple first signal lines, where orthographic projections of the first signal lines on the base substrate are spaced apart in a first direction and extend along a second direction, and the first direction intersects with the second direction. The fourth conductive layer is located on the side of the third conductive layer away from the base substrate and includes multiple connection line segments, where orthographic projections of the connection line segments on the base substrate extend along the first direction, and a same connection line segment is respectively connected to a plurality of first signal lines through via holes.