Micro-LED Display Yellow Subpixel Power Optimization
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Solution Overview
Problem
Micro-LED displays face high power consumption when emitting white balance light due to the lower efficiency of red LEDs, necessitating a power-saving light emitting mode.
Innovation Solution
Incorporating a yellow LED subpixel with a peak wavelength within a specific range, allowing for reduced power consumption by using yellow LEDs, which have higher light emitting efficiency than red LEDs, and adjusting the brightness and lighting modes to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If red LED is used to emit white balance light, then color coverage is maintained, but power consumption increases
Solution Approach 1:
The display is divided into multiple subpixel types (red, green, blue, yellow) with different functions. The yellow subpixel specifically handles the yellow component of white balance light, while red subpixels handle other color requirements, segmenting the color generation tasks to optimize power consumption for each function
Solution Approach 2:
The invention changes the wavelength parameter of the yellow light to be within 560-580nm, which optimizes the spectral overlap with red light and enables effective color mixing while maintaining lower power consumption compared to traditional red LED-based white balance generation
2Use of energy by moving object
If yellow LED subpixel is added, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The yellow LED subpixel serves multiple functions: it generates the yellow component for white balance light, contributes to overall brightness, and works in combination with other subpixels to maintain color accuracy. This multi-functionality justifies the added complexity by delivering multiple benefits from a single component
Solution Approach 2:
The invention merges the yellow LED subpixel functionality with the existing RGB subpixel structure, creating a unified YGBR display system where all subpixels work together synergistically to achieve both power savings and color accuracy without requiring separate systems
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 solution achieves a 40% reduction in power consumption during white balance mode by leveraging the higher efficiency of yellow LEDs, while maintaining color coverage and brightness.
Implementation Method 1
yellow LEDs, which have higher light emitting efficiency than red LEDs
Data Source
AI summary
A micro-LED display includes a first LED subpixel, a second LED subpixel, a third LED subpixel and a fourth LED subpixel. The first LED subpixel is configured to emit a red light. The second LED subpixel is configured to emit a green light. The third LED subpixel is configured to emit a blue light. The fourth LED subpixel is configured to emit a yellow light, in which the yellow light emitted by the fourth LED subpixel has a peak wavelength that satisfies λp,Yellow,lower_limit<λp. λp,Yellow,lower_limit is a lower limit of the peak wavelength of the yellow light, λp is the peak wavelength of the yellow light.