Multi-Primary Color Display Sub-Pixel Driver Control
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Solution Overview
Problem
Conventional color display systems, such as LCDs, are limited in their ability to accurately reproduce colors using only three primary colors, which can result in reduced color gamut and perceived bit-depth, as well as issues with defective sub-pixels affecting image quality.
Innovation Solution
A driver control module is introduced to controllably activate an array of sub-pixel elements using more than three primary colors, incorporating a conversion module to process image data into sub-pixel data representing four or more primary colors, and a sub-pixel processor to generate signals based on display and image attributes, enabling the reproduction of a wider color gamut and correcting for defective pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If three primary colors (RGB) are used in conventional display systems, then the device complexity is low and ease of manufacture is high, but the color gamut and perceived bit-depth are limited
Solution Approach 1:
The invention divides each pixel into multiple sub-pixels, where each sub-pixel corresponds to a different primary color. Instead of using only three sub-pixels per pixel (RGB), the invention uses four or more sub-pixels per pixel, including additional primary colors such as yellow, cyan, magenta, or green. This segmentation allows the display to reproduce a wider color gamut while maintaining manageable device complexity through systematic organization of the sub-pixel array.
Solution Approach 2:
The invention changes the parameter of the number of primary colors from three to four or more. By introducing additional primary colors (such as yellow, cyan, magenta, or green) alongside the traditional RGB primaries, the color gamut is expanded. The conversion module transforms standard RGB image data into a format suitable for the extended color space, enabling accurate color reproduction across a broader spectrum without proportionally increasing device complexity.
2Measurement precision
If three primary colors are used, then the manufacturing process is simple, but the perceived bit-depth and color accuracy are reduced
Solution Approach 1:
The invention introduces a conversion module as an intermediary between the standard RGB image data source and the extended color display device. This conversion module performs color space transformation, converting three-primary-color image data into data suitable for four-or-more-primary-color display. This intermediary component enables high color accuracy by optimizing the utilization of additional sub-pixels while maintaining compatibility with standard image formats, thereby improving color accuracy without requiring complete redesign of the manufacturing process.
Solution Approach 2:
The display device is designed with multi-functionality, capable of operating with both standard three-primary-color inputs and extended color space optimization. The conversion module can adaptively process different types of image data and adjust the rendering based on the specific display characteristics. This universality allows the system to maintain ease of manufacture by accepting standard inputs while achieving superior color accuracy through intelligent data processing and adaptive rendering algorithms.
3Quantity of substance
If additional primary colors are added to exceed three per pixel, then the color gamut is enhanced, but the device complexity and driver control complexity increase
Solution Approach 1:
The invention performs preliminary color space conversion before the data reaches the driver control module. The conversion module pre-processes the image data, transforming it from standard RGB format into a format optimized for the extended color space with four or more primaries. This preliminary action simplifies the subsequent driver control by providing pre-calculated values for each sub-pixel, reducing the computational burden on the driver control module and enabling enhanced color gamut without proportionally increasing driver control complexity.
Solution Approach 2:
The invention replaces complex real-time driver control computations with pre-computed color conversion tables and algorithms. Instead of requiring the driver control module to perform complex real-time calculations to determine the optimal activation of four or more sub-pixels per pixel, the system uses pre-established conversion relationships. This substitution of mechanical/computational complexity with pre-calculated data structures enables enhanced color gamut while keeping driver control complexity manageable through efficient lookup and interpolation methods.
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
This solution enhances the color gamut and perceived bit-depth of displayed images by using additional primary colors, allowing for the reproduction of a larger range of colors and improving image quality by compensating for defective sub-pixels, resulting in a more accurate and vibrant color representation.
Implementation Method 1
The intensity of white light, e.g., provided by a back-illumination source, may be spatially modulated by LC array 108, selectively attenuating the light for each sub pixel according to the desired intensity of the sub-pixel
Implementation Method 2
The selectively attenuated light passes through RGB color filter array 106, wherein each LC cell is in registry with a corresponding color sub-pixel, producing the desired color sub-pixel combinations
Data Source
AI summary
Embodiments of the invention include a method, device and/or system for displaying a more than three primary color (RGB) image. The device (100,200) may include, for example, a driver control module (218) to controllably activate one or more drivers (206,210) of an array of sub-pixel elements of at least four primary colors based on image data representing pixels of the color image in terms of at least three primary colors (RGB). Other embodiments are described and claimed.