Micro-LED Subpixel Circuit With Sequential Emission and Fault Tolerance
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Solution Overview
Problem
Existing electronic devices with micro-LED displays face inefficiencies in power consumption and performance due to the simultaneous emission of multiple LEDs within a single emission interval, and manufacturing defects in LEDs can lead to sub-pixel failure.
Innovation Solution
The implementation of a display panel with sub-pixels containing multiple LEDs, each controlled by separate emission control transistors, allowing for sequential emission within different intervals, and adaptive control strategies to compensate for manufacturing faults in individual LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are simultaneously emitted within a single emission interval, then the display can provide sufficient luminance, but power consumption increases and efficiency decreases
Solution Approach 1:
The patent divides the emission of multiple LEDs into sequential time intervals rather than simultaneous emission. Each LED is activated in a separate emission interval, allowing the display to maintain luminance requirements while reducing peak power consumption. This periodic activation strategy enables efficient power management by controlling the timing of each LED's emission cycle.
2Illumination intensity
If multiple LEDs are simultaneously emitted within a single emission interval, then the display can provide sufficient luminance, but emission efficiency decreases
Solution Approach 1:
The patent implements sequential emission intervals for multiple LEDs, where each LED is activated in a time-multiplexed manner. This periodic emission strategy improves efficiency by allowing each LED to operate at optimal current levels during its designated interval, rather than requiring all LEDs to operate simultaneously at reduced efficiency due to shared power constraints.
3Reliability
If manufacturing defects occur in LEDs, then sub-pixel failure occurs and image quality degrades
Solution Approach 1:
The patent divides each sub-pixel into multiple individual LEDs, allowing independent control and failure isolation. When a manufacturing defect occurs in one LED, only that specific LED fails while other LEDs within the same sub-pixel remain functional. This segmentation strategy prevents complete sub-pixel failure and maintains overall display quality despite individual LED defects.
Solution Approach 2:
The patent employs adaptive control strategies that detect and compensate for LED manufacturing variations and defects by adjusting emission parameters. By monitoring the performance of each LED and dynamically modifying emission intensity and timing, the system can compensate for defective LEDs and maintain consistent image quality across the display.
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
Enhances display efficiency by optimizing power usage and maintaining image quality even with defective LEDs, ensuring consistent luminance and reduced power consumption.
Implementation Method 1
A sub-pixel in the display panel may include a plurality of light emitting diodes (LEDs) including a first LED and a second LED
Data Source
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AI summary
An electronic device is provided. The electronic device may comprise a display driving circuit. The electronic device may comprise a display panel. A subpixel in the display panel may comprise a plurality of light-emitting diodes (LEDs) comprising a first LED and a second LED. The subpixel in the display panel may comprise a driving transistor comprising a first gate configured to obtain a data voltage, a first drain, and a first source. The subpixel in the display panel may comprise a first light-emitting control transistor comprising a second gate, a second source connected to the first drain, and a second drain connected to an anode of the first LED among the plurality of LEDs. The subpixel in the display panel may comprise a second light-emitting control transistor comprising a third gate, a third source connected to the first drain, and a third drain connected to an anode of the second LED among the plurality of LEDs.