02-02-2013, 09:38 AM
AMOLED DISPLAYS
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ABSTRACT:
The development of OLED displays has been a rocky road, with prediction after prediction running into delays and revisions. That’s typical for the development of new display technologies, but the huge promise of OLED coupled with the technology’s apparent simplicity made the delays particularly frustrating for OLED.
Now, Samsung Mobile Display (SMD), the primary manufacturer of active-matrix OLEDs (AMOLEDs), can’t keep up with demand. These are exciting times for AMOLED, and we can expect an array of new AMOLED-based products, but the melodrama is not over.
As it turns out, although AMOLED technology appears simple, it isn’t. Great advances have been made on materials and device structure, resulting in vastly improved efficiency and lifetime, but the lifetime of blue emitters is still seriously deficient for many applications.
Although the processes used for making both the OLED front planes and active-matrix backplanes are responsible for the technology’s current success, they are (at least in part) about to be pressed into use for the new, much larger fabs that will soon begin production – even though they have distinct limitations even for today’s generation. Process scalability is a critical issue if OLED displays are to be manufactured in larger sizes at a cost that allows them to be used in high-volume products. In this overview, we will look at recent developments and current issues, and make some very specific (and perhaps slightly reckless) predictions about the immediate future
[attachment=49304]
ABSTRACT:
The development of OLED displays has been a rocky road, with prediction after prediction running into delays and revisions. That’s typical for the development of new display technologies, but the huge promise of OLED coupled with the technology’s apparent simplicity made the delays particularly frustrating for OLED.
Now, Samsung Mobile Display (SMD), the primary manufacturer of active-matrix OLEDs (AMOLEDs), can’t keep up with demand. These are exciting times for AMOLED, and we can expect an array of new AMOLED-based products, but the melodrama is not over.
As it turns out, although AMOLED technology appears simple, it isn’t. Great advances have been made on materials and device structure, resulting in vastly improved efficiency and lifetime, but the lifetime of blue emitters is still seriously deficient for many applications.
Although the processes used for making both the OLED front planes and active-matrix backplanes are responsible for the technology’s current success, they are (at least in part) about to be pressed into use for the new, much larger fabs that will soon begin production – even though they have distinct limitations even for today’s generation. Process scalability is a critical issue if OLED displays are to be manufactured in larger sizes at a cost that allows them to be used in high-volume products. In this overview, we will look at recent developments and current issues, and make some very specific (and perhaps slightly reckless) predictions about the immediate future