Manufacturing method for glass film and manufacturing device therefor

Abstract

A manufacturing device (1) for a glass film is provided with a glass film ribbon (G) forming unit (10) for forming a glass film ribbon from molten glass or a glass base material for secondary processing, a take-up unit (20) for taking up, in a roll shape, the glass film ribbon (G) that has been drawn out downward while cooled, and a width direction cutting unit (30) for cutting the glass film ribbon (G) along the width direction just before the take-up position of the take-up unit (20). The vertical distance (h) from the position at which the forming unit (10) starts the forming of the glass film ribbon (G) to the position at which the width direction cutting unit (30) cuts the glass film ribbon (G) is five times the size in the width direction of the glass film ribbon (G).

Description

technical field [0001] The present invention relates to a method for producing a glass film and a production device thereof, and more particularly to a technique for producing a long glass film that can be wound into a roll. Background technique [0002] As is well known, among image display devices in recent years, flat panel displays (hereinafter abbreviated as FPDs) such as liquid crystal displays (LCDs), plasma displays (PDPs), field emission displays (FEDs), and organic EL displays (OLEDs) are representative. become mainstream. As for the above-mentioned FPD, since weight reduction is progressing, a method of reducing the thickness of the glass substrate used for the FPD is currently being sought. [0003] In addition, for example, organic EL is not limited to turning on or off fine three primary colors with TFTs like a display, but can also be used as a flat light source such as a backlight of an LCD or a light source for indoor lighting by emitting only a single colo...

AI Technical Summary

Problems solved by technology

Since glass is a brittle material, when a straightening force is continuously applied to the glass film ribbon, deformation may accumulate on the glass film ribbon, which may eventually cause damage (fracture) to the glass film ribbon

Therefore, it is difficult to continuously perform the winding operation of the glass film ribbon with good precision and stably, and there are many wastes to be carried out thereby.

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