Display Device Saturation Attenuation Power Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices with self-emitting elements face challenges in reducing power consumption, as simple conversion methods may not effectively decrease the lighting of pixels, leading to increased power usage when displaying images with four-color output signals.
Innovation Solution
A display device with a configuration of pixels including sub-pixels for red, green, blue, and an additional color component, along with a conversion processing unit that reduces saturation in input signals to optimize power efficiency by increasing the luminance of the additional color component, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a simple conversion process is performed to convert three-color input signal to four-color output signal, then the display device can drive self-emitting elements, but the amounts of lighting of self-emitting elements increase leading to increased power consumption
Solution Approach 1:
The patent applies parameter changes by modifying the saturation of color signals within a predetermined range before conversion to four-color output. By adjusting saturation parameters, the system optimizes the lighting amounts of self-emitting elements, thereby reducing power consumption while maintaining display functionality
Solution Approach 2:
The patent implements dynamic adjustment of saturation levels based on the specific color information being displayed. The saturation is attenuated adaptively according to the input signal characteristics, allowing the system to dynamically optimize power consumption for different display scenarios
2Use of energy by moving object
If saturation is reduced to increase lighting of additional color component, then power consumption decreases, but color saturation may be compromised
Solution Approach 1:
The patent carefully controls the saturation attenuation parameter within a predetermined range that balances power consumption reduction with color accuracy preservation. By defining specific boundaries for saturation reduction, the system maintains acceptable color fidelity while achieving power savings
Solution Approach 2:
The patent incorporates feedback mechanisms to monitor and adjust saturation levels, ensuring that color accuracy remains within acceptable thresholds while optimizing power consumption. The system evaluates the impact of saturation reduction on display quality and makes adjustments accordingly
Data Source
AI summary
The display device includes an image display unit including a plurality of pixels each including first to third sub-pixels and a fourth sub-pixel for displaying an additional color component according to an amount of lighting of a self-emitting element; a conversion processing unit that receives a first input signal including first color information for display at a predetermined pixel, where the first input signal is obtained based on an input video signal, the conversion processing unit being configured to outputs a second input signal including second color information with a saturation reduced by an amount of saturation attenuation defined such that saturation variation falls within a predetermined range according to the first color information; and a fourth sub-pixel signal processing unit that outputs, to the image display unit, a third input signal including third color information with red, green, blue components and the additional color component that are converted based on the second color information.