Method of manufacturing conductive laminated film

Abstract

A manufacturing method of a conductive laminated film suppressing a wrinkle has a metal layer forming step in which a conductive metal layer is continuously formed on a surface of a long transparent conductive film where a transparent conductive layer is formed while the transparent conductive film, including a long transparent film base containing a polyester resin as a constituting material and the transparent conductive layer formed thereon, is transported. The metal layer forming step is performed under a reduced pressure atmosphere of 1 Pa or less. The long transparent conductive film is continuously transported by application of a transport tensile force, and the conductive metal layer is continuously deposited on the surface where the transparent conductive layer is formed in a state in which a surface where the transparent conductive layer is not formed contacts the surface of a film-forming roll.The surface temperature of the film-forming roll is preferably 110 to 200[deg.] C. The transport tensile force per unit area in a plane perpendicular to the longitudinal direction of the film base in a region where the film is formed is preferably 0.6 to 1.8 N / mm<2>.

Description

technical field [0001] The present invention relates to a method for producing a conductive laminate film in which a transparent conductive layer and a conductive metal layer are provided on a transparent substrate. Background technique [0002] In display devices such as flat panel displays such as liquid crystal displays, plasma displays, and organic EL displays, and touch panels, transparent electrodes made of transparent conductive oxides such as indium tin oxide (ITO) are used. In order to apply a voltage to the transparent electrode from the outside or to detect the potential on the transparent electrode, pattern wiring is connected to the transparent electrode. As the patterned wiring, a patterned wiring formed with a silver paste by a screen printing method or the like is widely used. Generally, in a display device, such as Figure 4 As shown in the schematic diagram of , the wiring is patterned so as to surround the peripheral portion of the transparent electrode. ...

AI Technical Summary

Problems solved by technology

In this way, the pattern of the wiring becomes complicated, and on the other hand, it is also required to narrow the area where the peripheral portion is decorated so that the surrounding wiring cannot be seen, thereby increasing the area ratio of the display area in the display device (narrowing the frame).

However, in the above method of printing silver paste, there is a limit to reducing the line width of the electrodes, and it is difficult to further narrow the frame of the display device.

Images