METHODS OF SUBSTRATE LOADING AND UNLOADING, SUBSTRATE ENCAPSULATION AND METAL MASK SWITCHING FOR LARGE-SIZED OLED MANUFACTURING

A method of loading and unloading OLED substrates, an encapsulating method of large-size substrates, and an automatic mask exchanging method are provided to enhance a manufacturing yield of a large-size OLED by repeatedly supplying TFT substrates to a manufacturing apparatus. A roller device includes plural rollers(10) and a roller shaft. Plural roller devices are arranged in a vertical direction. The roller devices are elevated along a vertical axis. Substrates are placed on the respective roller devices. The respective substrates are moved in a horizontal direction by using a pusher. An OLED(Organic Light Emitting Device) substrate loading/unloading device includes cassette chambers. TFT(Thin Film Transistor) substrates(71) are mounted on the three cassette chambers. Encapsulation substrates(70) are mounted on the three cassette chambers. OLEDs are mounted on the three cassette chambers.