Dual-Side Display Panel Voltage Distribution
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Solution Overview
Problem
Conventional display panels suffer from poor brightness uniformity due to asymmetrical brightness distribution caused by a driver chip being disposed on one side, leading to eye fatigue from inconsistent brightness across the panel.
Innovation Solution
A display panel design with a substrate layer, first and second metal layers, and an insulating layer, where the second metal layer is vertically, grid, or planar structured, and connected to the first metal layer to distribute input voltage evenly across the panel, ensuring both sides receive the input voltage, thereby increasing current and improving brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a driver chip is disposed on one side of the display panel, then the device complexity is reduced, but the brightness uniformity deteriorates
Solution Approach 1:
The electricity supply function is segmented into two separate areas: a first electricity supply area near the driver chip and a second electricity supply area at the opposite side. This segmentation allows independent voltage distribution paths, enabling the far side to receive sufficient voltage without increasing overall device complexity
Solution Approach 2:
The patent introduces a vertical stacking dimension by placing the first and second metal layers at different heights (separated by an insulating layer) rather than extending wires horizontally across the entire panel. This vertical arrangement improves brightness uniformity without increasing the planar footprint or device complexity
2Device complexity
If voltage is supplied only from one side, then the device complexity is reduced, but the current distribution becomes asymmetric
Solution Approach 1:
The patent creates different local electrical characteristics at different locations on the panel. The first electricity supply area connects to the driver chip while the second electricity supply area provides additional voltage support, ensuring each region has appropriate electrical properties for its function
Solution Approach 2:
By providing voltage supply at both the near side (first electricity supply area) and far side (second electricity supply area), the patent creates more equipotential regions across the display panel, reducing voltage gradients and achieving more symmetric current distribution
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 solution significantly enhances brightness uniformity by ensuring both sides of the display panel receive input voltage, reducing electrical resistance and increasing current, which results in improved brightness consistency and reduced eye fatigue.
Implementation Method 1
An input voltage at a side of the display panel near a driver chip is drawn to another side of the display panel by lines of a second metal layer
Implementation Method 2
An insulating layer is further disposed between the first metal layer and the second metal layer in the display area
Data Source
AI summary
The disclosure provides a display panel, a manufacturing method thereof, and a display device. A display area is defined on a surface of the display panel, and a first electricity supply area and a second electricity supply area are disposed opposite to each other at two sides of the display area. The display panel includes a substrate layer, and a first metal layer and a second metal layer which are sequentially disposed on the substrate layer, and an insulating layer is further disposed between the first metal layer and the second metal layer in the display area.