Micro LED Power Line Layout to Minimize Electric Field Corrosion
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Solution Overview
Problem
Existing display devices face challenges in simplifying the structure of pixel circuits, reducing power consumption, and minimizing electric field-induced corrosion of wiring lines in non-active areas.
Innovation Solution
Integrating multiple pixel circuits into a single pixel driving circuit and incorporating a ground line between parallel power lines in the non-active area to reduce electric fields and minimize corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multiple pixel circuits are integrated into one pixel driving circuit, then power consumption is reduced and device complexity is simplified, but manufacturing precision requirements increase
Solution Approach 1:
Multiple pixel circuits are integrated into a single pixel driving circuit, combining multiple functional units into one consolidated structure. This merging reduces the overall number of separate circuits, simplifies the device structure, and lowers power consumption by reducing redundant components and interconnections.
Solution Approach 2:
The pixel driving circuit is designed to perform multiple functions by integrating several pixel circuits into one unit. This multi-functional design allows a single circuit to control multiple pixels, reducing the total number of driving circuits needed and thereby reducing power consumption and device complexity.
2Area of stationary object
If power lines are placed close together in the non-active area, then device area is reduced, but electric field interference increases causing wiring corrosion
Solution Approach 1:
A ground line is introduced as an intermediary element between adjacent power lines carrying different power signals. This ground line acts as a mediator that shields the power lines from each other, reducing electric field interference and preventing wiring corrosion while allowing the power lines to remain closely spaced for area efficiency.
Solution Approach 2:
The ground line, which occupies additional space, converts the potential harm of electric field interference into a benefit by shielding the power lines. The presence of the ground line transforms the harmful electric fields into contained, controlled fields that do not interfere with adjacent power lines, thus protecting against corrosion.
3Object-affected harmful factors
If ground line is added between power lines, then electric field interference is reduced, but device complexity and manufacturing steps increase
Solution Approach 1:
The ground line is strategically placed only in the non-active area where power lines are routed, rather than throughout the entire device. This localized approach provides electric field shielding exactly where needed (between power lines) without adding unnecessary complexity to the active pixel areas, thus minimizing the overall impact on device complexity.
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 enables efficient, low-power operation of display devices with reduced electric field-induced corrosion of wiring lines, enhancing the durability and performance of the display.
Implementation Method 1
a ground line which is disposed between the plurality of power lines and is applied with a plurality of ground signals. Different power signals are applied to the plurality of power lines. Accordingly, the ground line is disposed between the plurality of power lines which is applied with different power signals to minimize the electric field between the plurality of power lines
Data Source
AI summary
A display device can include a substrate having an active area in which a plurality of pixels is defined and a non-active area extending from the active area, one or more pixel driving circuits disposed in the active area, a plurality of micro LEDs which is disposed in the plurality of pixels and is electrically connected to the pixel driving circuit, a plurality of power lines which is disposed in the non-active area and is electrically connected to the pixel driving circuit, and a ground line which is disposed between the plurality of power lines and different power signals are applied to the plurality of power lines. Accordingly, the ground line is disposed between the plurality of power lines which is applied with different power signals to minimize the electric field between the plurality of power lines.