Cooking device top plate
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Solution Overview
Problem
Crystallized glass substrates exhibit yellowness due to transition elements, making it difficult to achieve a white cooking device top plate, and existing technologies do not effectively address this issue while maintaining high strength and low-thermal expansibility.
Innovation Solution
A cooking device top plate comprising a crystallized glass substrate with a substrate color improving layer containing a blue pigment and brightness enhancing layers with voids and a refractive index lower than the substrate, along with a strength enhancing member, to correct the yellowness and enhance brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a crystallized glass substrate containing transition elements is used, then high strength and low thermal expansion are achieved, but yellowness occurs making it difficult to achieve a white appearance
Solution Approach 1:
The patent applies color correction by introducing a blue pigment layer on the back surface of the crystallized glass substrate. This blue pigment compensates for the yellow tint inherent in crystallized glass containing transition elements, achieving a white overall appearance while maintaining the high strength and low thermal expansion properties of the crystallized glass substrate.
Solution Approach 2:
The patent creates a composite structure by combining the crystallized glass substrate with additional functional layers including a blue pigment layer and a light scattering layer. This composite approach allows the substrate to maintain its mechanical integrity while the added layers correct the optical properties to achieve whiteness.
2Illumination intensity
If a blue pigment layer is added to correct yellowness, then white appearance is achieved, but device complexity increases
Solution Approach 1:
The patent applies the blue pigment layer specifically on the back surface of the substrate where it is needed for color correction, rather than throughout the entire structure. This localized application minimizes the added complexity while achieving the desired optical effect.
Solution Approach 2:
The patent combines multiple functions into integrated layers: the blue pigment layer serves both color correction and light scattering functions, while the light scattering layer simultaneously enhances brightness and provides additional optical diffusion. This merging of functions reduces overall structural 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 results in a cooking device top plate with high durability and a white color tone, maintaining strength and low-thermal expansibility, addressing the challenge of achieving a white appearance while preserving mechanical integrity.
Implementation Method 1
brightness enhancing layers with voids and a refractive index smaller than that of the crystallized glass substrate
Implementation Method 2
brightness enhancing layers with voids and a refractive index smaller than that of the crystallized glass substrate
Implementation Method 3
substrate color improving layer containing a blue pigment
Data Source
AI summary
A cooking device top plate comprising: a crystallized glass substrate containing Li2O—Al2O3—SiO2 as a main component and a transition element; a substrate color improving layer provided on a lower surface of the crystallized glass substrate, the substrate color improving layer containing a blue pigment and including one or more brightness enhancing layers containing voids and having a refractive index smaller than that of the crystallized glass substrate or not less than (a refractive index of the crystallized glass substrate+0.1); and a strength enhancing member.