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Concept
Currently TFT-LCDs are mainly fabricated by using a-Si TFTs for pixel switching devices and LSI ICs for peripheral circuit devices. By proper crystallization process compatible on the LCD glass substrate, LTPS can be obtained. LTPS can achieve high performances of TFT characteristics (ex. electron mobility ~200 ㎠/Vs). LTPS offers more benefits including integration driver ICs and other peripheral circuitry onto the glass substrate itself, reducing the number of external connections, and minimizing the TFT size. High pixel density, improved system reliability, and reduced cost are gained as a result. Integration is important to manufacture more compact and lighter products not only for high performance but also for cost reduction. In addition, the smaller TFT of LTPS increases the aperture ratio and display brightness. This is why the development of LTPS technology is so important to TFT-LCD manufacturers.
By improving LTPS technology, all of driver ICs and various circuitry can be integrated onto the substrate for the realization of System-on-Glass (SOG). LTPS can be also applied to fabricate AMOLED (Active Matrix Organic Light-Emitting Diode) Displays.
Major benefits of LTPS:
 Higher pixel density & more compact LCD
Cost reduction by component integration
Durability-shock and temperature resilient
This technology is best for:
Multi-Media Mobile Application
System-On-Glass (SOG)
OLEDW
2 shot SLS (Sequential Lateral Solidification) is the core technology of LTPS which is crystallization method for high quality poly-Si.
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