Method of making heated glazing

A glass sheet and window technology, applied in the field of heated windows, can solve the problems of polluting the surface of the film, prolonging the deposition time, reducing revenue, etc.

Active Publication Date: 2011-12-14
SAINT-GOBAIN GLASS FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deposition time is extended; mask maintenance requires deposition equipment to be out of service, and excess deposition on the mask can contaminate the film surface, reducing the yield of the method

Method used

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  • Method of making heated glazing
  • Method of making heated glazing
  • Method of making heated glazing

Examples

Experimental program
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Embodiment Construction

[0058] figure 1 Shown is a schematic diagram of an aircraft window, which includes two wires in the form of conductive strips (marked by dashes in the figure). The heating film made of ITO has uniform sheet resistance over the entire area. As shown, the resulting electrical power density is very non-uniform, relative to the target power density of 70 W / dm 2 , the power density in the lower left corner is about 25W / dm 2 , however the power density in the upper left corner exceeds 100, or even 150W / dm 2 . The ratio K of the average power density to the maximum power density is only 0.3.

[0059] figure 2 The heated windows in include an ITO film treated in accordance with the present invention with a different sheet resistance in one area than another. The gradient of sheet resistance is represented by contour lines. From about 10 ohms in the upper left corner, to over 30 ohms in sheet resistance in the lower left corner. image 3 Indicates that such a window has a high...

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Abstract

The subject of the invention is a method of obtaining a heated window, comprising depositing a continuous thin film of a transparent electronically conductive oxide, having a sheet resistance that is uniform over the entire area of the film, on a glass sheet; and subjecting the thin film to a plasma treatment in which a device that emits excited species of an oxygen plasma is placed facing a region of the thin film, and then a relative movement is created between the thin film and the device in order to treat differentially the various regions of the thin film, so that after the thin film has been treated it has regions with different sheet resistances.

Description

technical field [0001] The present invention relates to the field of heated windows, in particular heated windows for spacecraft. Background technique [0002] Heated windows typically include at least one glass sheet coated with one or more transparent conductive films. The provision of conductive strips on at least opposite sides of the window allows electrical current to be conducted in the film, thereby generating heat from the Joule effect, which heat is used to deicing and / or defogging the window. [0003] Transparent conductive films are usually based on metals, especially silver, or oxides (known as TCOs), especially indium tin oxide (ITO). [0004] Besides squares or rectangles, heating windows, especially for spacecraft applications, sometimes have complex shapes, which may in particular be trapezoidal or pentagonal. As a result, for a conductive film of uniform sheet resistance, ie one area of ​​the window has substantially equal sheet resistance relative to ano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06B5/00E06B3/66C03C17/22C23C14/35C23C14/08C23C14/58
CPCC03C2218/32C03C17/23C03C2217/94C23C14/086C23C14/34H05B3/84H05B2203/017Y02T50/67B60L2200/26Y10T29/49826Y02T50/60
Inventor G·扎加杜P·肖萨德V·勒古瓦
Owner SAINT-GOBAIN GLASS FRANCE
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