JDI Announces Development of 12.1-inch 4K2K TFT LCD Module – Oct 23, 2013– Tokyo, Japan (Techreleased) – Japan Display Inc. (JDI), a global leader in mobile display technologies, has developed a 12.1-inch 4K2K TFT module, the world’s highest resolution density (365ppi) display designed for tablet use.

12.1-inch 4K2K TFT module
12.1-inch 4K2K TFT module

The display allows users to enjoy precise and dynamic images within the resolution range of full high-definition (Full-HD) smartphones, with approximately 4 times larger screen size. Low temperature poly silicon technology (LTPS) enables not only high-capacity information content and high-resolution, but also low power consumption, thinner module and narrower dead-band2, which suits mobile-use devices like tablets.

We will exhibit these displays in Japan Display Inc. booth on October 23 to 25, 2013, during FPD International 2013 in Pacifico Yokohama, Japan.


Screen size (diagonal) 12.1-inch (30.1cm)
Number of pixels 3840(xRGB) x 2160  (4K2K)
Resolution density 365ppi
Dimensions 273.67mm(W) x 164.60mm(H) x 1.96mm(D)
Dead-band top    2.0mm
side    2.0mm
bottom  6.8mm
NTSC ratio 70%
Contrast ratio 1000:1 (Typ.)
Viewing angle >160 degree(CR>100:1)
Surface luminance 500cd/m2(Typ.)
Power consumption
(at 500cd/m2
(360mW without backlight)
Number of LCD drivers 2

1 Per research conducted by JDI
2 Compared to JDI’s design simulation