RGBW OLED White Subpixel Luminance Control via Line Detection
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Solution Overview
Problem
Conventional OLED displays with RGBW pixels face challenges in improving visibility due to reduced aperture ratio and subpixel lifetime, especially with the addition of white pixels, which affects color representation and luminance.
Innovation Solution
A rendering method and device that converts RGB stripe input data into RGBW structure data by performing binary representation, line detection, and luminance control of white subpixels, using a line detection mask to enhance visibility and adapt luminance values for improved color representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If white pixels are added to OLED display to improve luminance and color representation, then luminance and color capability are improved, but aperture ratio is reduced
Solution Approach 1:
The patent applies local quality by selectively controlling the luminance of white subpixels based on their spatial location and the characteristics of adjacent colored subpixels. Different regions of the display have different white subpixel luminance values, optimized locally to improve overall luminance while maintaining color accuracy and accepting the reduced aperture ratio as a necessary trade-off for the RGBW structure.
2Illumination intensity
If white pixels are added to OLED display to improve luminance, then luminance is improved, but subpixel lifetime is reduced
Solution Approach 1:
The patent implements dynamics by dynamically adjusting the luminance of white subpixels based on real-time detection of line patterns and characteristics of adjacent colored subpixels. The white subpixel luminance is not fixed but varies dynamically to achieve optimal luminance enhancement while managing the accelerated degradation of white subpixels through adaptive control.
Solution Approach 2:
The patent applies parameter changes by modifying the luminance parameter of white subpixels based on detected line patterns and the luminance characteristics of adjacent colored subpixels. The white subpixel luminance value is changed adaptively to improve overall display luminance while accounting for the reduced lifetime characteristic of white OLED subpixels.
3Adaptability or versatility
If white pixels are added to OLED display to improve color representation, then color capability is improved, but subpixel lifetime is reduced
Solution Approach 1:
The patent applies local quality by selectively enhancing color representation in regions where white subpixels are adjacent to specific colored subpixels (red or blue). The white subpixel luminance is locally optimized to improve color representation capability in these specific regions, while accepting the reduced lifetime of white subpixels as a necessary trade-off for the enhanced color capability.
Data Source
AI summary
A rendering method includes performing a binary representation of input data by using input data of target subpixels of an RGB stripe structure, such that the binary representation defines binary data, calculating the binary data via a line detection mask to detect a target line made of the target subpixels, rendering adaptation data of a plurality of adaptation subpixels included in an adaptation line corresponding to the target line, and controlling the adaptation data of a plurality of white subpixels corresponding to the target line among a plurality of adaptation subpixels to generate output data.