RGBW Subpixel Arrangement for Display Resolution
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Solution Overview
Problem
There is a need for a display device capable of displaying image data with a predetermined resolution using a smaller number of sub-pixels, while maintaining the ability to accurately represent colors and luminance levels.
Innovation Solution
The display device incorporates a signal processor that assigns color components to a set of sub-pixels, including a red, green, blue, and white sub-pixel, allowing for the reproduction of image data with a reduced number of pixels by utilizing a combination of sub-pixels to achieve the same luminance and color representation as a larger number of pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of sub-pixels is reduced to improve efficiency and reduce complexity, then the device complexity and cost are reduced, but the ability to accurately represent colors and luminance levels deteriorates
Solution Approach 1:
The patent merges the functions of multiple pixels into a single pixel by incorporating multiple sub-pixels (red, green, blue, and white) within one pixel structure. This allows the display device to represent colors and luminance levels that would normally require multiple separate pixels, thereby reducing the total number of pixels needed while maintaining color accuracy.
Solution Approach 2:
The patent uses a composite arrangement of different colored sub-pixels (red, green, blue, and white) within each pixel. This composite structure enables the pixel to generate a wider range of colors and luminance levels by combining the light output from multiple sub-pixels, effectively replacing what would traditionally require multiple separate pixels.
2Productivity
If the number of sub-pixels is reduced to improve efficiency, then productivity is improved, but the resolution and image quality deteriorate
Solution Approach 1:
The patent combines multiple sub-pixels into a single pixel unit, allowing each pixel to represent multiple color and luminance values. This merging approach enables the display to achieve the same visual information density with fewer physical pixels, improving display efficiency while maintaining effective resolution.
Solution Approach 2:
The patent adds a white sub-pixel to the traditional RGB configuration, creating an RGBW structure. This dimensional addition to the color space allows for more efficient use of luminance information, enabling the display to represent images with fewer pixels by utilizing the white sub-pixel for brightness information that would otherwise require separate pixel elements.
Data Source
AI summary
A display device includes: a display unit including sub-pixels; and a signal processor. The sub-pixels are arranged such that either a first sub-pixel or a third sub-pixel is between a second sub-pixel and a fourth sub-pixel arranged in one direction. The signal processor outputs output signals to assign, to a set of the sub-pixels included in the display unit, color components assigned to two pieces of pixel data arranged in the one direction in input signals. The set of the sub-pixels is made up of the first, second, third, and fourth sub-pixels. The signal processor assigns a first color component that is a part or the whole of a white component in one of the two pieces of the pixel data to the fourth sub-pixel and second color components other than the first color component in the two pieces of the pixel data to the first to third sub-pixels.