Coating method, coating device and manufacturing method and manufacturing device for components of a display

This invention is related to a coating method and a coating device for efficiently exhausting the gas which invades into a coating device of a die coator for coating a surface of a glass substrate. And this invention is also related to a manufacturing method and a manufacturing device of a material for a display using the coating method and the coating device. By utiizing the coating method and the coating device of this invention, a gas exhaust route connected to a gas outlet of the coating device is placed at approxiamtely the same as the gas outlet or lower than the gas outlet. Furthermore, an exit of a gas supply route is lower than the gas outlet. Futhermore, an exit of the gas exhaust route is placed lower than the outlet. By supplying liquid from a liquid supply means, opening a switching valve of the gas supply route and exhausting coating liquid mixed with that gas from the gas outlet, the hydraulic pressure of height difference from an uppermost part and a lowermost part would not be resistance, and