Sharp Corporation of Osaka, Japan unveiled a 7-inch tablet with the company’s new IGZO (indium gallium zinc and an oxide semiconductor) display. The Aquos Pad with touch screen and a resolution of 1280 x 800 is set to go on sale in Japan in early December. Sharp says that the 2,040 mAh battery lasts 2.5 times as long as other tablets because the display can run with less power.
According to Sharp, which jointly developed the IGZO technology with Semiconductor Energy Laboratory (SEL), the material will enable even higher resolutions, lower power consumption, and higher performance touch screens, as well as narrower bezel widths for LCD display panels used in mobile devices such as smartphones.
Sharp claims that compared to current amorphous IGZO semiconductors, it enables even smaller thin-film transistors to be achieved. This new material is expected to be adopted for use in LCD displays for mobile devices such as smartphones where the trend toward higher screen resolutions is growing increasingly strong. The technology also enables more touch accuracy.
Sharp and SEL have named this crystalline structure a CAAC (C-Axis Aligned Crystal) structure. Single crystal IGZO is characterized by having a hexagonal structure when seen from the c-axis direction and a layered form when seen from the direction perpendicular to the c-axis. Sharp says that it can be adapted for use in organic EL displays. The two companies are pursuing R&D to expand the use of this material in non-display devices.