Japan Display Develops Paper-Like Low-Power Color Reflective LCD Screen
Japan Display, a worldwide leader in LCD technologies, has developed a new paper-like low-power color reflective LCD screen that can display video. It has been developed in two different variations.
The first variation has a highly reflective surface with a reflection rate of 40 percent, and 5 percent coverage of the NTSC color gamut and the second one has a high color purity with 36 percent coverage of the NTSC color gamut, but with a reflection rate of 28 percent, which makes it slightly dimmer. Both variations of the screen have a contrast ratio of 30:1 and power consumption of 3 mW when displaying still pictures.
The group manager of research and development, Kazunori Yamaguchi, said that “ordinary liquid crystal displays have a backlight, and produce the picture by using a liquid crystal shutter. But this panel doesn’t have a backlight. It reflects light from above, and the liquid crystal shutter is used to produce a monochrome image. At the same time, color filters are used, to give a color picture.”
According to the press release from late October, key technologes are an optical property optimization that adopts a newly-developed scattering layer, as well as the fabrication of SRAMs in each pixel, using LTPS technology so that power is lowered for non-changing screen images.
Long story short, welcome to the future of display technologies.