A kind of laminated glass with transparent conductive film

Abstract

The invention relates to the technical field of glass, in particular to an automobile windshield capable of defrosting and defogging, and particularly provides a laminated glass with a transparent conducting film. The laminated glass comprises a first bended glass plate, a second bended glass plate, an intermediate layer and the transparent conducting film. The transparent conducting film is provided with a first heating zone and a second heating zone, and at least one strip-shaped heating zone is arranged in the second heating zone; each strip-shaped heating zone is composed of strip-shaped transparent conducting films between two parallel separated film removing lines; and the strip-shaped transparent conducting film is provided with at least one bending section capable of changing the direction of a current. According to the laminated glass with the transparent conducting film, the problem of the design of conventional and complicated electrodes and film removal can be solved, the heating zone is enabled to be more accurate and the heating power is adjustable, and any size of zones requiring heating can be heated, for example, a windscreen wiper stay zone is heated, heating other unnecessary areas are not required, thus the waste of energy is avoided.

Description

Technical field: [0001] The invention relates to the technical field of glass, in particular to an automobile windshield capable of defrosting and defogging, and specifically provides a laminated glass with a transparent conductive film. Background technique: [0002] In cold weather, frosting tends to occur on automobile glass and building glass; or when the humidity inside and outside the car is high, and the temperature and the external environment are greatly different, fogging is also prone to occur on automobile glass and building glass; Thereby affecting the observation line of sight inside and outside the car and their appearance, especially the front windshield of the car that provides a good view for the driver. If frost and fog occur on it, it will seriously affect the driver's line of sight and easily cause Safety accidents, so it is necessary to require the front windshield of the car to have the function of defrosting and defogging. With the development of tec...

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Problems solved by technology

[0003] In the design of traditional electrically heated laminated glass, a single transparent conductive film is arranged on most of the surface of the glass substrate, such as the technical solutions disclosed in patents US6472636 (B1), JP3849533 (B2) and EP2591637 (B1), Although they can obtain a relatively uniform heating effect on the entire surface, more and more technical solutions for regional heating are used in actual products. For example, the wiper area of ​​the front windshield of a car needs higher heating power to achieve faster defrosting. The purpose can be achieved by locally enhancing heating, such as patent CN101406102 (B) adding conductive hinged wires on the heating coating, and patent CN1620840 (A) setting at least two other bus tracks in local areas; it can also be achieved by adding independent heating area, such as patent CN101653038 (A) in the surface area that is not heated by the electric heating coating, the heating element of the low-resistance conductive element that is provided with wires and / or printed conductive traces, and the patent CN107592985 (A) in the block The area corresponding to the parking position of the windshield on the inner surface of the windshield is coated with a flexible polymer insulating sheet with conductive material; although the technical solutions disclosed in these patents can realize regional heating, they are only suitable for uniform heating of regular-shaped areas. Shaped areas are prone to phenomena such as hot spots when heated, and traditional heating areas are large, making the addition of additional heating elements such as wires, printed conductive traces, and / or flexible polymer insulation sheets, which brings disadvantages such as increased manufacturing costs and energy waste

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