Micro LED Display Panel Power Reduction via Ground Ring Integration
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Solution Overview
Problem
Active matrix OLED display panels consume significant power, limiting battery life in portable devices, as they require high power for operation compared to liquid crystal display panels.
Innovation Solution
Integration of micro LED devices into the display panel, where micro LED devices replace the organic layer in each subpixel, reducing power consumption by using wafer-based emissive micro LEDs that are efficient in light emission and consume less power, with a method involving a TFT substrate, bank openings, bottom electrodes, and a ground ring for electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If active matrix OLED display panels are used to achieve high image quality, then image quality is improved, but power consumption increases significantly
Solution Approach 1:
The patent transitions from OLED to micro LED technology, fundamentally changing the light emission mechanism from organic electroluminescence to inorganic LED emission. This parameter change enables higher efficiency and lower power consumption while maintaining or improving image quality, directly resolving the technical contradiction between image quality and power consumption
2Use of energy by moving object
If micro LED devices are integrated into the display panel to reduce power consumption, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent segments the display panel into distinct functional regions: pixel areas containing micro LED devices, bank openings for electrical connections, and ground rings for grounding. This segmentation allows for modular integration of micro LED technology while maintaining manageable device complexity through systematic structural organization
Solution Approach 2:
The ground ring structure serves multiple functions: providing electrical grounding for the micro LED devices, defining pixel boundaries, and facilitating electrical connections. This multi-functionality reduces the need for separate components, thereby managing device complexity while enabling micro LED integration
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 use of micro LED devices significantly reduces power consumption, enabling longer battery life in portable devices while maintaining high image quality, as they are highly efficient in light emission and consume less power compared to traditional OLED or LCD displays.
Implementation Method 1
micro LED devices... are highly efficient in light emission and consume less power compared to traditional OLED or LCD displays
Data Source
AI summary
A display panel and a method of forming a display panel are described. The display panel may include a thin film transistor substrate including a pixel area and a non-pixel area. The pixel area includes an array of bank openings and an array of bottom electrodes within the array of bank openings. An array of micro LED devices are bonded to the corresponding array of bottom electrodes within the array of bank openings. An array of top electrode layers are formed electrically connecting the array of micro LED devices to a ground line in the non-pixel area.