Six-Color RGBYMC Filter for Display Printer Color Matching

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Solution Overview

Problem

Color reproducibility issues arise when displaying images on liquid crystal devices and printing them, as RGB data suited for display devices is not compatible with YMC ink systems used in printers, leading to unsatisfactory color matching between displays and printers.

Innovation Solution

A color image display device with a six-color filter configuration of RGB and YMC, where each pixel includes red, green, blue, yellow, magenta, and cyan filter regions, allowing for wider color reproduction and independent black-and-white display, enhancing resolution by using complementary color combinations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If RGB color filters are used in a display device, then the display device can show colors within the RGB color triangle, but color matching with printers using YMC inks is poor

Engineering Contradiction:
Improvecolor reproduction compatibilityVSAvoidcolor matching accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The pixel is segmented into six distinct filter regions (R, G, B, Y, M, C) instead of the conventional three. Each region corresponds to a specific color filter that can independently modulate light, enabling the display to reproduce both RGB and YMC color spaces effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The six-color filter configuration provides multi-functionality by enabling the display to operate in multiple color spaces. The same pixel structure can display colors using RGB additive mixing, YMC subtractive mixing, or combinations thereof, making it universally compatible with both display and printing color systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Device complexity

If only RGB filter regions are provided in one pixel, then the pixel structure is simple, but the displayable color range is limited and resolution in black-and-white display is insufficient

Engineering Contradiction:
Improvepixel structure complexityVSAvoidcolor reproduction range
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The pixel is segmented into six distinct filter regions (R, G, B, Y, M, C) instead of the conventional three. Each region corresponds to a specific color filter that can independently modulate light, enabling the display to reproduce both RGB and YMC color spaces effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extends the color space dimension from three (RGB) to six (RGBYMC). This dimensional expansion allows the display to access a broader gamut of colors and enables independent black-and-white display channels through complementary color combinations.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Manufacturing precision

If complementary color combinations (R-C, G-M, B-Y) are arranged adjacently, then black-and-white display resolution is tripled, but the filter region arrangement becomes more complex

Engineering Contradiction:
Improveblack-and-white display resolutionVSAvoidfilter region arrangement
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The pixel is segmented into six distinct filter regions (R, G, B, Y, M, C) instead of the conventional three. Each region corresponds to a specific color filter that can independently modulate light, enabling the display to reproduce both RGB and YMC color spaces effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the pixel are assigned different functional qualities. Complementary color pairs (R-C, G-M, B-Y) are positioned adjacently to enable local black-and-white display functions, while maintaining overall color display capabilities across the entire pixel structure.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS7545395B2Color filter, color image display device, and electronic apparatus
Publication Date: 2009.06.09 BOE TECHNOLOGY GROUP CO LTD
  • US7545395B2 patent drawing
  • US7545395B2 patent drawing
  • US7545395B2 patent drawing

AI summary

A color image display device includes a display panel including pixel regions and a color filter, the color filter including, in each pixel region, a red filter region and a cyan filter region arranged adjacent to and parallel to each other in a direction, a green filter region and a magenta filter region arranged adjacent to and parallel to each other in the direction, and a blue filter region and a yellow filter region arranged adjacent to and parallel to each other in the direction.