Japan Display Inc. (JDI) has announced that it has begun mass production start of 5-inch class (Starting from 5-inch) low temperature poly-silicon (LTPS) LCD module with WQHD (1440×2560 pixels) resolution and over 500 PPI pixel density. JDI said that it has reduced LCD panel power consumption in the WQHD screen by using improved materials to reduce LCD driving frequency from 60Hz to 30Hz depending on the display image signal without affecting the image quality, thus achieving low power.
| Display size | 5-inch class |
|---|---|
| Number of pixels | 1440(×RGB)×2560(WQHD) |
| Resolution density | Over 500ppi |
| LCD driving frequency | 60Hz/30Hz |
| Driver IC | FHD→WQHD, with upscaling function |
| In-cell touch | second-generation In-Cell(Pixel Eyes) |
| LCD mode | Photo-Alignment IPS(IPS-NEO) |
| Surface luminance | 500cd/m2(Typ.) |
| NTSC ratio | 96% (Typ.) |
| Contrast ratio | 1500:1 (Typ.) |
The LCD module is JDI’s proprietary second-generation Pixel Eyes which has thinner borders, a deeper black level, and can even operate with wet fingers. The driver IC in the LCD module has an embedded upscaling function from FHD to WQHD, so that it can display WQHD images from an inherently designed FHD system.
JDI said that it is committed to continuously offering superior display products featuring advanced technologies, based on its core LTPS technology. It did not say when we can expect the display in smartphones.