Displays made with zinc oxide-gallium-indium (Indium Gallium Zinc Oxide or IGZO), could be equipped with tablet PCs iPad third generation, but Sharp company , serving as the main supplier of such screens, failed to ensure adequate supplies in the right quantities. The technology in question, is still at an early commercialization stage, and Sharp with Semiconductor Energy Laboratory researchers at the upcoming SID Display Week event is ready to show only a prototype displays of this type.
It is noteworthy that IGZO materials can reduce the size of thin-film transistors used to control the active matrix liquid crystal , thereby increasing the resolution of the display. In addition, IGZO have a higher electron mobility compared to amorphous silicon-based oxide, used in the manufacture of modern LCD screens, the best indicators of energy efficiency and light transmission.
IGZO can be used for the production of monitor based on organic light-emitting diodes (OLED). The main parameters of four different displays prototypes can be explored in the following table:
|
Liquid Crystal |
Based on organic light-emitting diodes |
Size Screen |
09.04 inches |
01.06 inches |
05.13 inches |
04.03 inches |
Resolution |
720 to 1280 |
2560 to 1600 |
3840 to 2160 |
540 by 960 |
Pixel density |
302 ppi |
498 ppi |
326 ppi |
326 ppi |
Features |
for smartphones |
for mobile devices |
RGBW |
flexible |
The main obstacle to the use of screen-based on IGZO semiconductor remains their short life span and difficulty in mass production. Also, Sharp and Semiconductor Energy intend to expand the scope of its technology beyond the production of displays.