As the 5-inch full-HD smartphone panel continues to be the traction of the market and the demand is increasing, manufacturers are beginning to introduce new manufacturing technologies to reduce power consumption at high resolution. Shipment of 5-inch panels in 2013 is expected to exceed 100 million, of which 5% are used in mobile phone displays.
According to reports, there are currently four manufacturing technologies that can provide active matrix TFT backplanes for 5-inch FHD smartphone panels: traditional a-SiTFT, oxideTFT, and LTPSTFT, all of which use LCD, and LTPSTFT as the backplane of AMOLED displays.
Yoonsung Chung, director of large-area displays and FPD materials at the NPDDisplaySearch research institute, said: Although Apple iPhone suppliers focus on the production of LTPSLCD displays, other oxideTFT manufacturers are trying to solve this problem and gain a competitive advantage. These technologies have their own advantages. And shortcomings, this will be crucial for panel manufacturers to choose the most suitable technology to meet the requirements.
At present, most LCD screens of smart phones use a-SiTFT display products because the technology is relatively mature and the cost is relatively low, although it has poorer performance than oxide or LTPSTFT. According to NPDDisplaySearch, the manufacturing cost gap between a-Si and oxide screens is about 3%, and the gap between oxide and LTPSTFT is 11%. However, as the display performance continues to increase, the performance requirements for the backplane are also increasing, especially for high-resolution smartphone displays.
Chung said that OxideTFT provides potential for reducing costs and improving performance. The cost of oxide displays is similar to a-Si displays, and the performance of oxides is close to LTPS; however, its instability, low yield, and other technical obstacles , May slow down the use process.
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