Multicolor Display White Color Reproducibility via Segmented Light Sources
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Solution Overview
Problem
Existing multicolor display devices struggle to accurately reproduce white color, as it is often perceived differently due to varying light intensities of primary colors, leading to an unbeautiful display.
Innovation Solution
Incorporating a second light source emitting white light in addition to primary color light sources, with fine shapes on the light guide body that reflect and emit lights to control gradations and intensities, ensuring accurate and beautiful white representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple primary color light sources are used to mix colors, then color display capability is improved, but white color reproducibility deteriorates because white is perceived differently when light intensities differ
Solution Approach 1:
The patent segments the color display function by separating white light generation from primary color mixing. Instead of relying solely on mixing red, green, and blue lights to create white, the system uses a dedicated white light source (LED or fluorescent lamp) that operates independently. This segmentation allows precise control over white color reproduction while maintaining the ability to display other colors through the primary light sources.
Solution Approach 2:
The patent introduces a light guide plate as an intermediary component that manages and distributes light from multiple sources. The light guide plate receives light from both the primary color LEDs and the white light source, then directs and mixes these lights appropriately to achieve accurate color reproduction. This intermediary structure enables coherent integration of multiple light sources without compromising white color accuracy.
2Adaptability or versatility
If light intensities of primary colors are adjusted to express different colors, then color variety is improved, but white color accuracy deteriorates due to intensity variations
Solution Approach 1:
The patent segments the control of white light from the control of primary colors. The white light source operates independently with its own intensity control, allowing white color accuracy to be maintained regardless of adjustments made to primary color intensities. This independent control pathway enables the system to achieve full color variety while preserving white accuracy.
Solution Approach 2:
The patent changes the parameter approach by introducing a separate light source for white light, thereby adding a new degree of freedom to the system. Instead of adjusting the mix ratio of primary colors to achieve white, the system uses a dedicated white light source with independent intensity parameter control, allowing precise white reproduction that is not affected by primary color intensity variations.
3Device complexity
If only primary color light sources are used, then device complexity is reduced, but color reproducibility quality deteriorates
Solution Approach 1:
The patent segments the lighting system into two functional groups: primary color light sources for generating red, green, and blue, and a separate white light source for generating white light. This segmentation allows the system to maintain relatively simple device complexity while significantly improving color reproducibility quality, particularly for white color representation.
Solution Approach 2:
The patent makes the light guide plate multi-functional by having it handle both primary color lights and white light. The same light guide plate structure that directs primary colors also manages the white light source, thereby achieving improved color reproducibility without proportionally increasing device complexity.
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
The solution enables high color reproducibility, allowing white to be displayed consistently as beautiful white, enhancing the multicolor display's aesthetic appeal by controlling light gradations and intensities through the use of white light in conjunction with red, green, and blue.
Implementation Method 1
the lights incident on and introduced into the light guide body are reflected by the fine shapes and emitted from a light emitting surface of the light guide body
Data Source
AI summary
A multicolor display device realizes multicolor display with high color reproducibility which can be felt beautiful. A red light, a green light and a blue light are incident on a light guide body on which a picture pattern is formed from light sources as first light sources, and a white light is incident thereon from a light source as a second light source to display the picture pattern in multi-colors, thereby realizing beautiful display with good reproducibility of a white color.