Reflective Display Spectral Adjustment for Accurate Color
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Solution Overview
Problem
Electronic devices struggle to accurately reproduce colors of digital content when lighting conditions used to present the content differ from those defined for the content, leading to inaccurate color perception.
Innovation Solution
Incorporating a variable color front light source and a reflective display with adjustable spectral properties, along with circuitry to modify the reflected light spectrum based on lighting conditions, ensuring accurate color reproduction by adjusting the display's reflection characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard light source is used to illuminate the display, then the device structure remains simple, but color accuracy deteriorates when lighting conditions differ from content definition
Solution Approach 1:
The patent applies dynamics by making the light source spectral characteristics adjustable rather than fixed. The light source can dynamically change its spectrum to match different color temperatures (e.g., 6504K, 9309K, 15580K) required for accurate color reproduction under various lighting conditions, resolving the contradiction between maintaining simple structure and achieving reliable color accuracy.
Solution Approach 2:
The patent changes the spectral parameters of the light source to match the color temperature requirements for accurate color reproduction. By adjusting the light source spectrum to correspond with standard illuminants (D65, D93, D15), the system achieves reliable color accuracy without requiring complex additional processing components.
2Measurement precision
If the display reflects light directly without spectral modification, then the device complexity remains low, but color perception accuracy deteriorates under varying lighting conditions
Solution Approach 1:
The patent introduces an optical filter as an intermediary element between the light source and the display. This filter modifies the reflected light spectrum to compensate for mismatches between the light source spectrum and the color definition spectrum, thereby improving color perception accuracy while adding only a single optical component rather than a complex system.
3Adaptability or versatility
If no spectral adjustment is applied, then the processing complexity remains minimal, but the adaptability to different lighting conditions deteriorates
Solution Approach 1:
The patent achieves multi-functionality by designing a system where a single adjustable light source can serve multiple lighting conditions (different color temperatures) and a single optical filter can compensate for various spectral mismatches. This universal approach provides adaptability to different lighting conditions without requiring separate processing paths for each condition, thus avoiding excessive 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
Enables accurate color reproduction of digital content under varying lighting conditions, aligning perceived colors with intended colors defined by color coordinates.
Implementation Method 1
a light source configured to emit light associated with a first light spectrum
Implementation Method 2
a display configured to reflect the light, as reflected light associated with a first reflected light spectrum
Data Source
AI summary
A device may include a light source configured to emit light associated with a first light spectrum and a display configured to reflect the light, as reflected light associated with a first reflected light spectrum, to visually present digital content in a color associated with a second light spectrum. The device may include circuitry configured to determine whether the first light spectrum differs from the second light spectrum. The circuitry may be configured to modify, based on reflectance properties of the display and based on the first light spectrum differing from the second light spectrum, the first reflected light spectrum to create a modified reflected light spectrum representative of the color. The circuitry may be configured to cause the display to render, based on the modified reflected light spectrum, the digital content in the color that is associated with the second light spectrum.