Dual-LED Pixel Circuit With Constant-Potential Electrodes
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Solution Overview
Problem
Current display devices using micro LEDs face challenges in achieving high resolution, high display quality, and low power consumption while maintaining reliability.
Innovation Solution
The display device incorporates a pixel structure with multiple transistors and light-emitting diodes, including a first transistor, a second transistor, and a light-emitting diode package with conductive layers, where a constant potential is supplied to the conductive layers, and the transistors include metal oxides in their channel formation regions, enabling efficient power management and high display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If micro LEDs are used as display elements, then high luminance and high contrast are achieved, but achieving high resolution and low power consumption simultaneously becomes difficult
Solution Approach 1:
The pixel is divided into multiple functional regions with dedicated transistors (first transistor for driving, second transistor for control) and separate conductive layers (second, third, fourth conductive layers) for different electrodes. This segmentation allows independent optimization of each component, enabling high resolution through precise control while managing the inherent complexity of micro LED displays.
Solution Approach 2:
The patent introduces a constant potential supply through the first conductive layer connected to multiple electrodes (second electrode, fourth electrode, sixth electrode) via the fourth conductive layer. This multi-dimensional electrical connection approach simplifies the overall structure by providing a common reference potential, reducing the number of independent control lines needed, and thereby lowering power consumption while maintaining high luminance output.
2Manufacturing precision
If multiple transistors and conductive layers are added to improve resolution, then display quality improves, but power consumption increases
Solution Approach 1:
The first conductive layer supplies a constant potential to multiple electrodes (second electrode through fourth conductive layer, fourth electrode through fourth conductive layer, sixth electrode through fourth conductive layer). This equipotential approach reduces voltage drops and energy loss across the pixel structure, allowing high-resolution display with reduced power consumption by eliminating the need for multiple independent high-voltage supply lines.
3Reliability
If complex pixel structures with multiple transistors are used, then high display quality is achieved, but manufacturing efficiency decreases
Solution Approach 1:
Multiple functional layers are merged into an integrated pixel structure where the first transistor, second transistor, and multiple conductive layers (second, third, fourth conductive layers) are combined in a unified configuration. This merging allows for standardized manufacturing processes and simplifies assembly, improving manufacturing efficiency while maintaining the high display quality enabled by the multiple components.
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 allows for a display device with high resolution, high display quality, and low power consumption, while also enhancing reliability and manufacturing efficiency by simplifying the assembly process and reducing the need for a backlight or polarizing plate.
Implementation Method 1
a first light-emitting diode, a second light-emitting diode
Implementation Method 2
The display device using a micro LED (Light Emitting Diode) as a display element has advantages of high luminance
Data Source
AI summary
A display device with high display quality and low power consumption is provided. In the display device, a first transistor, a second transistor, a first conductive layer, and a light-emitting diode package are included in a pixel, and then the light-emitting diode package includes a first light-emitting diode, a second light-emitting diode, a second conductive layer, a third conductive layer, and a fourth conductive layer. One of a source and a drain of the first transistor is electrically connected to the first light-emitting diode through the second conductive layer. One of a source and a drain of the second transistor is electrically connected to the second light-emitting diode through the third conductive layer. The first conductive layer supplied with a constant potential is electrically connected to the other electrodes of the first and second light-emitting diodes through the fourth conductive layer.