Micro-LED Subpixel Emission Timing for Luminance and Power Balance
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Solution Overview
Problem
Existing electronic devices with micro-LED displays face inefficiencies in power consumption and display quality due to the simultaneous emission of multiple LEDs within a single emission interval, which can lead to manufacturing faults and reduced luminance.
Innovation Solution
The electronic device employs a display panel with sub-pixels that include multiple LEDs, utilizing a driving transistor and emission control transistors to emit each LED within separate emission intervals, optimizing current distribution and compensating for manufacturing faults through adjusted data voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are activated simultaneously within a single emission interval, then the display can achieve higher luminance output, but power consumption increases and manufacturing faults are more likely to occur
Solution Approach 1:
The patent divides the emission interval into multiple sub-intervals, activating different LEDs sequentially rather than simultaneously. Each LED is driven during its designated time slot, creating a periodic emission pattern that maintains overall luminance while reducing peak power consumption and minimizing the impact of manufacturing defects.
2Illumination intensity
If multiple LEDs are activated simultaneously within a single emission interval, then the display can achieve higher luminance output, but manufacturing faults cause more significant quality degradation
Solution Approach 1:
The patent segments the emission interval into multiple time slots, with each slot dedicated to a specific LED. This temporal segmentation ensures that if one LED has manufacturing defects, only its designated time slot is affected, while other LEDs can compensate during their respective intervals, thereby maintaining overall display quality and reliability.
3Device complexity
If multiple LEDs are activated simultaneously within a single emission interval, then the display structure is simpler, but current distribution becomes less efficient
Solution Approach 1:
The patent implements dynamic control of LED activation through time-multiplexed emission, where the driving transistor and emission control transistors adjust current distribution based on the active emission interval. This dynamic approach optimizes current efficiency for each LED while maintaining a relatively simple overall display structure.
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 approach enhances display efficiency and luminance by minimizing power consumption while maintaining image quality, even in the presence of manufacturing defects, by selectively activating LEDs within distinct emission intervals.
Implementation Method 1
a plurality of light emitting diodes (LEDs) including a first LED and a second LED
Data Source
AI summary
An electronic device is provided. The electronic device includes display driving circuitry, and a display panel, wherein a subpixel in the display panel includes a plurality of light-emitting diodes (LEDs) comprising a first LED and a second LED, a driving transistor including a first gate electrode configured to obtain a data voltage, a first drain, and a first source electrode, a first light-emitting control transistor comprising a second gate electrode, a second source electrode connected to the first drain, and a second drain electrode connected to an anode of the first LED among the plurality of LEDs. a second emission control transistor including a third gate electrode, a third source electrode connected to the first drain, and a third drain electrode connected to an anode electrode of the second LED among the plurality of LEDs.