Heating Glass with Printed Thermal Conductive Pattern
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Solution Overview
Problem
Existing heating glasses face challenges in achieving uniform heating performance at low voltage while maintaining transparency and effectively removing frost and dew condensation, with complex manufacturing processes and high material wastage hindering widespread adoption.
Innovation Solution
A heating glass with a transparent conductive oxide layer and a thermally conductive pattern formed using a printing method, which ensures excellent heating performance at low voltage, reduces infrared ray transmittance, and maintains high visible ray transmittance, using materials like fluorine tin oxide or zinc oxide, and forming patterns with specific line widths and angles to minimize visibility and maximize heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermal conductive pattern is formed on glass surface to enable heating function, then heating performance is improved, but the pattern becomes visible and affects aesthetic appearance
Solution Approach 1:
The patent applies local quality by creating a transparent conductive oxide layer with specific optical and electrical properties that differ from the bulk glass. This layer is deposited only on the surface where heating is needed, providing localized heating functionality while maintaining the overall transparency and aesthetic appearance of the glass. The TCO layer's unique properties (transparency in visible range, conductivity for heating) are confined to the surface region, resolving the contradiction between visible heating patterns and aesthetic appearance.
2Reliability
If TCO layer is deposited on glass to improve transparency and conductivity, then heating performance is improved, but manufacturing complexity and material waste increase
Solution Approach 1:
The patent merges multiple functions into a single TCO layer deposition step. The same TCO layer that provides electrical conductivity for heating also serves as the transparent surface layer. By combining the heating function and transparency function into one material layer deposited in one process step, the manufacturing complexity is reduced compared to separate layers for each function, while still achieving the desired heating performance and aesthetic appearance.
3Reliability
If heating voltage is increased to improve frost removal performance, then heating efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent changes the electrical parameters of the glass system by incorporating a TCO layer with optimized conductivity. This allows the heating system to operate at lower voltages and currents while achieving the same heating effect. The TCO layer's high transparency in the visible range also allows solar heating to supplement electrical heating, further reducing energy consumption while maintaining effective frost removal performance.
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 provides a heating glass with excellent heating performance at low voltage, ensuring uniform heating across the glass surface, reducing frost and dew condensation, and maintaining high visible ray transmittance while minimizing infrared ray transmittance, thus enhancing field of vision and energy efficiency.
Implementation Method 1
heat is generated from the thermal conductive pattern by applying electricity to both terminals of the thermal conductive pattern
Implementation Method 2
exhibiting uniform heating performance to an entire area of glass so that a thermal conductive pattern is not well visible and frost and dew condensation are easily removed
Implementation Method 3
an infrared ray (IR) blocking function is ensured, and frost and dew condensation are easily removed
Data Source
AI summary
The present invention provides a heating glass including a glass; a transparent conductive oxide (TCO) layer formed on one surface of the glass; and a thermal conductive pattern formed on the transparent conductive oxide layer, and a method of manufacturing the same.