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Samsung Display starts development of thin QD-OLED panels

According to the latest report, Samsung Display is developing a new quantum dot (QD)-OLED panel, thinner than its current commercial version. This was confirmed by the Korea Electronics and Telecommunications Research Institute (ETRI) booth during the 22nd International Conference on Information Display (IMID 2022) in Busan, South Korea.

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The information shows that Samsung Display is working on a QD-OLED panel that removes one of the two glass substrates. The Korean display maker currently uses two glass substrates for its QD-OLED panels, one for the thin-film transistor (TFT) and the other for the QD color-conversion layer.

ETRI calls the new technology Samsung Display is developing stacked QD-OLED, in which the QD color conversion layer is printed directly on the emissive layer stacked on top of the TFT glass substrate. ETRI confirmed that it is developing the technology with Samsung Display and other suppliers and universities.

Removing the substrate will allow Samsung Display to reduce production costs and also allow their QD-OLED panels to be rolled. However, the technology may not be commercialized until after 2024.

There are currently two TVs using QD-OLED panels, one is Samsung S95B and the other is Sony A95K. At the same time, Samsung also recently announced that it would launch 77-inch screen products to further expand the size range of QD-OLED TVs.

The current production capacity and yield rate are the problems faced by QD-OLED TVs. In July this year, Samsung increased the yield rate of QD-OLED panels to 85%, which is a significant improvement compared to 50% in November last year.

But there is still a gap with LG’s WOLED panel, which has a yield rate of about 93%. According to the forecast of the market research company Display Supply Chain Consultant (DSCC) in August, the manufacturing cost of Samsung Display’s QD-OLED panels will be 20-25% lower than this year, and the output and price of QD-OLED TVs will usher in good changes in the future.

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