Glass-Ceramic Display with Corrective Filter for White Color Rendering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current glass-ceramic plates struggle to display a wide range of colors, particularly white, due to inhomogeneous absorption in the visible region, leading to color distortion and inability to accurately render polychromatic light sources like RGB LEDs.
Innovation Solution
A glass-ceramic article with a light transmission range of 0.8% to 40% and an optical transmission of at least 0.1% in the visible range, combined with a corrective filter that compensates for the spectral dispersion of the glass ceramic, allowing for precise color rendering of white and other colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If glass-ceramic plates use dark coloring (e.g., vanadium oxide) to mask heating elements, then visibility of heating elements at rest is improved, but color rendering of displayed light is distorted
Solution Approach 1:
The plate is divided into zones with different optical properties: dark zones containing vanadium oxide for masking heating elements, and light zones with minimal colorants for accurate color display. This segmentation allows each zone to serve its specific function without compromising the other.
Solution Approach 2:
Different regions of the plate have different compositions and optical characteristics. The local quality of each region is optimized for its intended purpose: high absorption in dark areas for safety masking, and controlled transmission in light areas for faithful color reproduction of displays.
2Manufacturing precision
If glass-ceramic plates use transparent formulations to display pure colors, then color display capability is improved, but masking of heating elements is reduced
Solution Approach 1:
The plate is divided into zones with different optical properties: dark zones containing vanadium oxide for masking heating elements, and light zones with minimal colorants for accurate color display. This segmentation allows each zone to serve its specific function without compromising the other.
Solution Approach 2:
Different regions of the plate have different compositions and optical characteristics. The local quality of each region is optimized for its intended purpose: high absorption in dark areas for safety masking, and controlled transmission in light areas for faithful color reproduction of displays.
3Adaptability or versatility
If glass-ceramic plates use RGB LEDs to produce white or multiple colors, then color variety is improved, but color uniformity deteriorates due to inhomogeneous absorption
Solution Approach 1:
The plate features light zones with controlled colorant content that provide uniform optical properties across the display area. This ensures that RGB LEDs produce consistent, uniform colors without the inhomogeneous absorption problems that plague uniformly dark plates.
Solution Approach 2:
By adjusting the concentration and distribution of colorants in specific zones of the plate, the optical transmission characteristics are optimized to maintain color uniformity while still allowing for diverse color display capabilities using RGB LED technology.
4Manufacturing precision
If glass-ceramic plates increase light transmission to display colors accurately, then color fidelity is improved, but masking capability of heating elements is reduced
Solution Approach 1:
The plate is divided into zones with different optical properties: dark zones containing vanadium oxide for masking heating elements, and light zones with minimal colorants for accurate color display. This segmentation allows each zone to serve its specific function without compromising the other.
Solution Approach 2:
Different regions of the plate have different compositions and optical characteristics. The local quality of each region is optimized for its intended purpose: high absorption in dark areas for safety masking, and controlled transmission in light areas for faithful color reproduction of displays.
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 accurate and uniform color display across a wide range of colors, including white, without altering the initial color of the light source, even in dark or highly absorbent glass-ceramic plates, by controlling light transmission and absorption.
Implementation Method 1
the absorption is not homogeneous (blue strongly absorbed, yellow less), the eye no longer perceives white through the glass-ceramic
Implementation Method 2
A glass-ceramic article with a light transmission range of 0.8% to 40% and an optical transmission of at least 0.1% in the visible range, combined with a corrective filter that compensates for the spectral dispersion of the glass ceramic
Data Source
Figure 1~2b
AI summary
The present invention relates to an article having at least one coloured luminous region, in particular a display, said article comprising at least one glass-ceramic substrate having a light transmission ranging from 0.8% to 40% and an optical transmission of at least 0.1% for at least one wavelength in the range extending from 420 to 780 nm, at least one light source and at least one filter so as to form at least one coloured luminous region, in particular a display, in at least one region of the plate.