53.1: Development of Oxide‐TFT OLED‐TV Technologies

Abstract

We reported amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) TFT OLED TV panel development in AUO. The Generation 6 (G6) threshold voltage uniformity can be lower than 0.8V. The RGB side-by-side OLED patterning was realized by fine metal mask. By the application of a source follower connection pixel compensation circuit, the panels driven by AUO engine show excellent characteristics. For future product performance requirement, amorphous Indium-Tin-Zinc-Oxide (a-ITZO) TFT was developing, high mobility as 33.2 cm2/Vs was achieved. Metal-organic chemical vapor deposition (MOCVD) system was also used to improve the mobility of IGZO TFT. To improve manufacturing efficiency of OLED process, inkjet printing technology is also under development in AUO.

51.1: Amorphous Indium‐Gallium‐Zinc‐Tin‐Oxide TFTs with High Mobility and Reliability

“…AU Optronics developed high-mobility a-IGZO and a-ITZO backplanes. The latter exhibited an even higher mobility of 33.2 cm 2 /Vs [3,6].…”

1.3: A Timing Model for the Design of an Active‐Matrix Display

“…However, with production capacity increasing year by year with the existing investment, the LTPS TFT technology will beat the a-Si TFT technology in small size FPDs in the near future. The emerging MO TFT technology has a large applicable range for both large and small size FPDs, and it has been adapted in laptop and TV products [3]. However, the exact area in which MO TFT technology would replace the current Si-based TFT technology is not clear yet as the recent investment is still focused on the Sibased production.…”

Highly Air‐Stable Electron‐Transport Material for Ink‐Jet‐Printed OLEDs

“…[1] In the last few years, high-quality displays based on active-matrix OLEDs (AMOLEDs) have been widely employedi ns mart phones, tablet PCs, digitalc ameras, and large-size televisions. [2][3][4][5] Flexible,w earable devices are attracting increasing attention from academia and industry.T he few high-contrast OLED structures to have been reported are all bottom-emitting OLEDs and mayn ot be readily adaptable for use in top-emitting OLEDs,w hich have an umber of technical merits (e.g.,l arger aperture ratios) overb ottom-emittingd evices for high-performanceA MOLEDs. It is well known that the performance (particularly the stability and uniformity) of thinfilm transistor (TFT) backplanes is vital for achieving uniform brightness,b ecause OLEDs are current-controlledd isplay devices.…”

“…Organic light‐emitting diodes (OLEDs) have been successfully applied in display and lighting since the pioneering work of Tang and VanSlyke . In the last few years, high‐quality displays based on active‐matrix OLEDs (AMOLEDs) have been widely employed in smart phones, tablet PCs, digital cameras, and large‐size televisions . Flexible, wearable devices are attracting increasing attention from academia and industry.…”