Multi-Emitter Pixel Layout for Wider Display Color Gamut
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Solution Overview
Problem
Current display devices with light-emitting elements have a limited color gamut, unable to fully reproduce the range of colors perceivable by the human eye, particularly in the CIE-XY chromaticity diagram, leading to insufficient color reproduction area.
Innovation Solution
The implementation of a display device with specific pixel configurations, where each pixel includes light-emitting elements with distinct chromaticity coordinates in the CIE-XY chromaticity diagram, such as x-coordinates of 0.50 or more for some pixels and y-coordinates of 0.55 or more for others, and combinations of different emission spectrums, materials, and thickness to expand the color reproduction area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional light-emitting elements with standard chromaticity are used, then the display device achieves simple structure and ease of manufacture, but the color gamut is limited and cannot fully reproduce the range of colors perceivable by the human eye
Solution Approach 1:
The display device divides the color reproduction task into multiple specialized light-emitting elements within each pixel. Each element is responsible for emitting light with a specific chromaticity coordinate (e.g., x≥0.50 for red, y≥0.55 for green, x≤0.20 and y≤0.25 for blue), segmenting the overall color gamut achievement into distinct functional components that collectively expand the reproducible color space
Solution Approach 2:
Different light-emitting elements within the same pixel are assigned different chromaticity characteristics tailored to specific color regions. This local differentiation of quality allows each element to optimize its emission for a particular color range, thereby expanding the overall color gamut without requiring all elements to have identical properties
2Quantity of substance
If light-emitting elements with specific chromaticity coordinates (x≥0.50, y≥0.55, x≤0.20, y≤0.25) are used, then the color gamut is expanded, but the manufacturing precision requirements increase
Solution Approach 1:
The invention specifies particular chromaticity coordinate ranges (x≥0.50, y≥0.55, x≤0.20, y≤0.25) as design parameters for the light-emitting elements. By defining these parameter ranges upfront, the manufacturing process can be optimized to produce elements within these specifications, transforming a precision challenge into a controllable parameter specification
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 configuration enhances the color reproduction area in the CIE-XY chromaticity diagram, allowing for the expression of brighter and more vivid colors, thereby improving the display's ability to depict a wider range of colors recognizable by human eyes.
Implementation Method 1
A display device having a light-emitting element which includes a layer of an organic material between a pair of electrodes and emits light when a current is supplied between the electrodes
Implementation Method 2
the present invention relates to a display device having a layer including an organic material, a fluorescent material, or a phosphorescent material in the light-emitting element
Implementation Method 3
the present invention relates to a display device having a layer including an organic material, a fluorescent material, or a phosphorescent material in the light-emitting element
Data Source
AI summary
To improve color reproduction areas in a display device having light-emitting elements. A display region has a plurality of picture elements. Each picture element includes: first and second pixels each including a light-emitting element which has a chromaticity whose x-coordinate in a CIE-XY chromaticity diagram is 0.50 or more; third and fourth pixels each including a light-emitting element which has a chromaticity whose y-coordinate in the diagram is 0.55 or more; and fifth and sixth pixels each including a light-emitting element which has a chromaticity whose x-coordinate and y-coordinate in the diagram are 0.20 or less and 0.25 or less, respectively. The light-emitting elements in the first and second pixels have different emission spectrums from each other; the light-emitting elements in the third and fourth pixels have different emission spectrums from each other, and the light-emitting elements in the fifth and sixth pixels have different emission spectrums from each other.