Samsung Display begins dual-stack tandem OLED development to win iPad order

OLED material is called T-series
Launch of the T2 in 2024 intended for the Apple tablet

Image: Apple

Samsung Display has begun development of OLED panels with a two-stack tandem structure where the panel has two emission layers (EML), TheElec has learned.

The South Korean display maker is developing the panels to win orders from Apple for its OLED iPads due to launch in 2024, sources said.

Having a two-battery structure __ as opposed to the single-battery structure currently manufactured by Samsung Display __ doubles the brightness of the OLED panel while its life should be quadrupled.

Samsung Display has named the set of materials for the new T-series OLED panels __ the T standing for tandem.

The OLED panels will be aimed at tablets, laptops and automotive applications.

Cupertino is expected to launch its first iPad with an OLED panel in 2024.

It is also expected to apply OLED panels to its MacBook and iMac lines later on.

As these products are usually used longer than smartphones, Apple has expressed its preference for using OLED panels with two stack structures to its display panel vendors such as Samsung Display in the past.

All OLED panels in iPhones currently have a unique stack structure that Samsung Display uses its M-series of hardware to manufacture.

Samsung Display aims to first develop the T1 set of materials and obtain customer evaluation.

It aims to apply the material for commercial production in 2023.

For the set’s successor, T2, Samsung Display is currently aiming to start commercial production in 2024.

OLED panels made with the T2 material set will likely be the first panels used by Apple for its iPads, according to this timeline.

However, this is not set in stone and Samsung Display may launch another successor set called T3 beforehand or later.

Samsung Display will likely first supply OLED panels made with the T-series to Samsung Electronics, its parent company.

This will allow Samsung Electronics to maintain its hardware leadership over Apple by applying it to its Galaxy Tab and Galaxy Book series first, while Samsung Display will have the opportunity to check the productivity of the panels before presenting them in Cupertino.

Meanwhile, Samsung Electronics plans to use OLED panels with a single-stack structure made with Samsung Display’s M12R material set for high-end laptops and tablets it will launch this year.

The M12 set has been used for smartphone OLED panels; The R in M12R stands for rigid, just like a customized version of the original set of materials designed for OLED panels in computing products such as laptops and tablets.

Samsung Display is currently using its A2 production line in South Korea to manufacture rigid OLED panels for computer products.

Meanwhile, the M12 set will be used to make OLED panels that will be used in Samsung’s foldable phones launching later this year as well as Apple’s iPhone 14 series.

Additionally, Samsung Display had previously worked with Apple on a 10.86-inch OLED iPad project, which was canceled during the third quarter of last year.

The South Korean display panel maker had proposed a single-stack structure, but Apple said it wanted a two-stack structure instead. The project failed due to

Samsung Display’s rival, LG Display, already manufactures OLED panels with a two-stack structure aimed at automobiles.

LG Display’s latest OLED panel sample for iPads received top marks in a recent review by Apple. LG Display’s oxide thin film transistor technology used for the panel has also been well received by the iPhone maker.

The challenge in a two-stack structure is to get the charge generation layer, or CGL, to control the charge to flow to the same places on both emission layers, otherwise it will negatively affect the purity of the color and brightness of red, green. and blue pixels on both layers.

Samsung Display and LG Display declined to comment.

저작권자 © THE ELEC, Korea Electronics Industry Media 무단전재 및 재배포 금지

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