|Samsung Display, consider first a review of 8.5G OLED 'Vertical Deposition' for IT Device.|
Samsung Display decided to first review the organic material vertical deposition method for manufacturing 8.5G OLED panels for IT. Vertical deposition can minimize mask sagging in the organic material deposition process.
According to the industry on the 23rd, it was found that Samsung Display is developing an 8.5th generation organic light emitting diode (OLED) evaporator for IT products using a vertical deposition method with Japan's ULVAC. IT products refer to tablets, laptops, and monitors. The 8.5th generation (2200x2500mm) OLED panel is more economical than the 6th generation (1500x1850mm) OLED panel.
The vertical deposition method is a method of stacking organic matter by sending vaporized (converted to gas) toward the glass substrate erected in the vertical direction to the ground. The horizontal deposition method mainly used in the 6th generation OLED deposits the vaporized organic material from the bottom up toward the glass substrate floating in the horizontal direction with the ground.
The vertical deposition method that Samsung Display is reviewing first can minimize the problem of 'mask sagging'. In the vertical deposition method, not only the glass substrate, but also the fine metal mask (FMM) required for organic deposition of red (R) green (G) blue (B) OLED is used in a vertical direction to the ground, so the drooping phenomenon in the center of the FMM is small.
On the other hand, 6th generation OLED with horizontal deposition method uses a long band-shaped FMM stick when depositing RGB organic materials, and the center part of the FMM stick sags down due to gravity. To prevent this, the FMM stick is tensioned (pulled) on the large frame and welded.
It is known that Alvac has secured a R&D space near the Samsung Display factory and is developing vertical deposition equipment there.