RGBW Sub-pixel Uniformity via Dynamic Luminance Substitution
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Solution Overview
Problem
Conventional methods for converting RGB signals to RGBW signals in display technologies lead to uneven working lives of sub-pixel units, resulting in reduced service life of the entire display, as they do not effectively account for the different strengths and usage times of red, green, blue, and white sub-pixels.
Innovation Solution
An image conversion method that converts RGB input signals into RGBW signals by determining a substitution rate for the white luminance output value based on the accumulated proportions of RGB and W luminance output values, ensuring uniform working lives of sub-pixels by adjusting the luminance output values of each pixel frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RGB signal is directly applied to RGBW display, then signal transmission is simple, but image distortion occurs
Solution Approach 1:
The patent introduces an image conversion module as an intermediary component between the signal transmission interface and the RGBW display. This module converts RGB signals to RGBW signals, enabling compatibility between standard RGB interfaces and RGBW displays while maintaining image quality. The conversion module acts as a mediator that translates signals between different formats without requiring changes to existing interfaces.
2Use of energy by moving object
If conventional RGB to RGBW conversion is used, then luminous efficiency is improved, but sub-pixel working lives become uneven
Solution Approach 1:
The patent dynamically adjusts the substitution rate parameter in the RGBW conversion process based on accumulated usage statistics of each sub-pixel type. By changing this parameter adaptively, the system balances the working loads of different sub-pixels, ensuring they wear out at similar rates while maintaining high luminous efficiency through optimal use of the white sub-pixel.
Solution Approach 2:
The patent implements a feedback mechanism that tracks the accumulated working hours of R, G, B, and W sub-pixels and uses this information to adjust the conversion parameters in real-time. The image conversion module continuously monitors sub-pixel usage and modifies the substitution rate accordingly, creating a closed-loop control system that optimizes both efficiency and reliability.
3Loss of energy
If white sub-pixel is added to improve luminous efficiency, then energy consumption is reduced, but uniformity of sub-pixel working lives is lost
Solution Approach 1:
The patent transforms the static RGBW conversion into a dynamic process where the substitution rate adjusts continuously based on accumulated usage data. The system adaptively changes conversion parameters in response to varying display content and usage patterns, optimizing the balance between energy efficiency and sub-pixel longevity throughout the display's operational life.
Data Source
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AI summary
The present disclosure discloses an image conversion method for converting RGB signal to RGBW signal and an apparatus thereof. A substitution rate of a W luminance output value of respective pixels in each frame is determined according to RGB luminance input values of the respective pixels in each frame, and accumulated proportions of RGB luminance output values and the W luminance output value in RGBW luminance output values of the respective pixels within a preset time before each frame. The RGBW luminance output values of the respective pixels in each frame is determined according to the determined substitution rate of the W luminance output value and the RGB luminance input values of the respective pixels in each frame. In this way, the RGBW luminance output values of the respective pixels in the present frame can be adjusted according to a utilization rate of respective sub-pixels in the respective pixels within a period of time before each frame, so as to substantially maintain working lives of the respective sub-pixels in the respective pixels uniform as far as possible, and to further improve a service life of an entire display.