Both area color and full color OLED products from RiTdisplay use passive-matrix (PM) driving technology at present. However, Wang indicated that the company will start to deliver its active-matrix (AM) OLED product in small volume within this year, and will focus on a 2.2-inch full color product.
As did Samsung, RiTdisplay adopted a-Si TFT technology to develop its AMOLED product. The company believes a-Si technology offers better performance than LTPS; the size of the substrate is another consideration. "When FPD TV happens to be one of the applications of AMOLED, the size of LTPS substrate will become a great limitation in product development. Since the largest LTPS panel available nowadays is only around 20-inch," said Yih Chang, general manager of RiTdisplay.
AUO also plans to deliver its AMOLED products this year. As the largest TFT-LCD panel maker in Taiwan, AUO possesses both a-Si TFT and LTPS-TFT technologies. Alan Lien, director of AVBU indicated that the company started mass delivery of its LTPS TFT-LCD panel last year, at 2.5-inch and below.
