Uniformly heated transparent conductive film curved windshield and manufacturing method

Abstract

The invention discloses a uniform heating type transparent conductive film curved-surface windshield. The windshield comprises a curved-surface windshield substrate and is characterized in that a transparent conductive film layer is arranged on the surface of the curved-surface windshield substrate, buses are arranged on the upper edge and lower edge of the curved-surface windshield substrate respectively and are connected with the transparent conductive film layer, the thickness of the transparent conductive film layer changes in a gradient mode between the buses of the curved-surface windshield substrate and changes in a gradient mode from one lateral edge of the curved-surface windshield substrate to the other lateral edge of the curved-surface windshield substrate, and the buses are connected with power lines respectively. The invention further discloses a method for manufacturing the curved-surface windshield. According to the uniform heating type transparent conductive film curved-surface windshield and the method, whole-area uniform heating of special-shaped curved-surface glass can be achieved, local overheating of the conductive film layer is avoided, the effective service life of the transparent conductive film is prolonged, operation is easy, and industrial production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of glass conductive films, in particular to conductive films on windshields of trains and airplanes, in particular to a uniformly heated transparent conductive film curved windshield and a manufacturing method. Background technique [0002] ITO transparent conductive film is colorless, has high light transmittance, and good chemical stability. It has good adhesion to glass and PVB or PU. It has been widely used in train windshields, and its conductive film can be heated by electricity. , to play the role of defrosting and defogging, and the portholes and windshields of the space shuttle are coated with ITO transparent conductive film. In addition to defrosting, it can also use its conductive function to play the role of electromagnetic shielding. ITO The resistance of the transparent conductive film is between the gold film and the tin oxide film, which can meet the requirements of electromagnetic shielding,...

AI Technical Summary

Problems solved by technology

[0003] However, the windshields of trains and airplanes are mostly shaped curved windshields, and the conductive film with a uniform thickness on it will cause overheating in some parts of the surface of the curved windshield due to the uneven heating power density of the film layer, which cannot be uniform across the entire area. heating

[0004] like Figure 5 When the transparent conductive film with a uniform thickness of the curved windshield shown is heated, overheating often occurs at point A and its vicinity; if the transparent conductive film has a uniform thickness, such as Image 6 The surface resistance of the conductive film of the windshield shown is 2.2ohms / sq as an example, and the surface power distribution of the transparent conductive film when the voltage is 115V is as follows Figure 7 As shown, it can be seen that the conductive film with uniform thickness is applied on the special-shaped curved windshield, and its power will generate uneven heat in the entire area.

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