Image Display Driving Method Optimizing Subpixel Signals
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Solution Overview
Problem
Existing image display apparatuses with four-subpixel configurations face challenges in achieving optimal output signal optimization and increased luminance due to reduced aperture regions and variations in color or luminance, leading to deteriorated picture quality.
Innovation Solution
A driving method that calculates and optimizes output signals for each subpixel based on input signals to adjacent pixels, using a signal processing section to determine fourth subpixel output signals from first, second, and third subpixel input signals, ensuring optimal signal distribution and increased luminance across the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a four-subpixel configuration including white displaying subpixel is adopted, then luminance is enhanced, but aperture region area of color subpixels is reduced
Solution Approach 1:
The patent merges the functions of color subpixels and white subpixel through shared signal processing. The signal processing section calculates output signals for white subpixels by referencing adjacent color subpixel input signals, effectively combining the luminance contribution of white subpixels with the color information from adjacent subpixels to achieve both high luminance and color quality.
Solution Approach 2:
The signal processing section acts as an intermediary that optimizes the relationship between color subpixels and white subpixels. It calculates fourth subpixel output signals based on first, second, and third subpixel input signals from adjacent pixels, mediating the signal distribution to maximize luminance while preserving color accuracy.
2Illumination intensity
If white displaying subpixel is added to enhance luminance, then power consumption of backlight can be decreased, but variations in color or luminance occur
Solution Approach 1:
The signal processing section implements a feedback mechanism where fourth subpixel output signals are calculated based on first, second, and third subpixel input signals from adjacent pixels. This feedback loop ensures that variations in color or luminance are compensated by adjusting the white subpixel output based on the actual input signals from color subpixels, maintaining consistency across the display.
Solution Approach 2:
The patent dynamically changes the output signal parameters of white subpixels based on the input signals from adjacent color subpixels. By adjusting the fourth subpixel output signal according to the minimum values of color subpixel input signals, the system adapts to local variations in color and luminance requirements, maintaining overall display consistency.
3Device complexity
If output signals to subpixels are not optimized, then device complexity is reduced, but picture quality deteriorates
Solution Approach 1:
The patent segments the signal processing into distinct components: the signal processing section separately handles color subpixel signals (first, second, third subpixel input signals) and white subpixel signals (fourth subpixel output signal). This segmentation allows for optimized processing of each subpixel type while maintaining overall picture quality, balancing complexity and performance.
Data Source
AI summary
Disclosed herein is a driving method for an image display apparatus which includes an image display panel and a signal processing section. Each of the pixels includes a first subpixel for displaying a first primary color, a second subpixel for displaying a second primary color, a third subpixel for displaying a third primary color and a fourth subpixel for displaying a fourth color. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, and a third subpixel output signal. The driving method includes the step, further carried out by the signal processing section, of calculating a fourth subpixel output signal based on a fourth subpixel control second signal and a fourth subpixel control first signal, and outputting the calculated fourth subpixel output signal to the fourth subpixel of the (p,q)th pixel.