The 4K (3,840 x 2,160 pixels) LCD display was built on a glass substrate instead of a silicon wafer as it is often the case for microdisplays, so that in principle, larger screen size could easily be developed. According to a Nikkei Technology report, the new panel used a low-temperature polycrystalline Si (LTPS) TFT back plane, with sub-pixel and pixel pitches at 3.76μm and 11.28μm, respectively. The online media also reported that the ultra-high resolution was achieved thanks to several new developments: a pixel alignment dubbed “stagger type,” which places the RGB sub-pixels in a triangle shape and prevents interference among pixels; short-channel TFTs with a channel length reduced by 25%, and a novel production process that forms contact holes and wiring down to about 1μm, with color filters about 4μm.
The South Korean display manufacturer may also use such ultra-high resolution LCD panels to create light field displays and hologram displays that can show natural 3D images. For such displays, larger screen sizes covered with a lenticular array could provide a glass-free 3D viewing experience to smartphone users.
Samsung Display Solutions – https://displaysolutions.samsung.com