Sharp demonstrates 30-inch 4K flexible OLED display

November 15, 2019 //By Julien Happich
flexible OLED
Display manufacturer Sharp has demonstrated a 4K (3,840x2,160 pixels) colour-filter-less OLED display using a 30-inch-diagonal film substrate, which is flexible enough to roll up into a compact case.

The 16:9 aspect ratio display was jointly developed with the Japan Broadcasting Corporation (NHK) and is claimed to be the largest display of its kind in the world. It supports a refresh rate of 60 frames per second. The light-emitting elements in each of the RGB subpixels of the OLED display were formed with ultra-high precision using a vapor deposition process, removing the need for color filters and improving light-emission efficiency. The use of a film substrate means the display part of the panel is approximately 0.5mm thick, flexible enough to be rolled into a cylinder approximately 2 cm in radius.

Sharp notes the display employs IGZO thin film transistors (TFTs) to drive the OLED elements and relies on NHK’s proprietary signal-processing technologies and panel drive technology to improve brightness uniformity and the sharpness of moving objects.


In June 2018, Sharp began mass production of flexible OLED displays for smartphones, the first company in Japan to do so. Sharp will continue to develop cutting-edge technologies that will pave the way for the displays of the future.

Sharp Microelectronics -

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