tandem architecture - Page 4

TCL is demonstrating a new 14" 4K 120Hz flexible AMOLED display that adopts a tandem display structure. The tandem structures enabled a reduction in power consumption of over 30%, an extension of the display's lifetime (3.5X) and a peak brightness of over 2,500 nites.

TCL was also showing a new 6.36" 1200x2670 LTPO AMOLED display, that features the company's new frequency division technology and self-developed frequency scanning circuits. Coupled with an ultra-low power consumption IC, it offers 15-20% power savings compared to TCL's standard AMOLEDs. 

DSCC estimates that the market for OLED evaporation materials (i.e. OLED stack materials) will reach $1.7 billion in 2023, and will grow to $2.7 billion in 2027 (a 11% CAGR from 2023). If UDC will succeed to commercially introduce a blue phosphorescence material, revenues can even be much higher.

OLED materials used in TV applications (and other large-area applications) will grow from $305 million in 2023, to $492 million in 2027, a 13% CAGR. DSCC also sees very fast growth in material used to produce tandem-structure IT displays, which will grow at a 79% CAGR to reach $443 million in 2027.

OLED microdisplay maker Sidtek announced that it is starting to install production equipment at its 12-inch production line in Wuhu City, Anhui Province. The company says the first production line in the project is on track to start production in 2024.

Sidtek is currently producing its OLED microdisplays on a 8-inch production line, also in Wuhu. The first phase of its 12-inch fab will have a monthly capacity of 6,000 substrates, and the company is planning an expansion to 18,000 substrate. The total investment in the 12-inch fab (including the 2nd stage) is estimated at 6 billion Yuan (around $840 million USD).

LG Display announced that it has started to mass produce 17" 2560x1920 foldable OLED laptop displays. LGD applied a tandem stack architecture, to increase the lifetime of the OLED displays, to make it suitable for the demands of laptop use.

It is likely that the recently announced HP Spectre Foldable PC uses LG's new panels.

Today we published a new edition of our Automotive OLED Market Report, with all the latest information. The new edition includes new car models with OLED displays and lighting, and updates from several companies, including LG's new automotive OLED strategy. The adoption of OLED technologies by the automotive is accelerating and expected to continue in the future.

Reading this report, you'll learn all about:

• OLED advantages and challenges
• PMOLED and AMOLED displays adopted in cars today
• Why OLED lighting is exciting for car makers
• All about flexible and transparent OLEDs

The report package also provides:

• A directory of all OLED automotive display makers
• OLED lighting roadmaps
• Personal contact details into leading OLED produces
• Car concepts with OLED technologies
• Free updates for a year

This OLED Automotive market report provides a great introduction to OLED display and lighting solutions for the automotive industry. This is a great guide for anyone involved with the automotive market - car makers, suppliers and aftermarket solutions.

LG Display detailed its latest automotive display strategy. The company is now offering three product families. For luxury flagship cars (over $80,000 in cost), the company is offering its P-OLED flexible panels, that offer high performance coupled with design freedom.

For premium cars ($50,000 - $80,000) the company offers rigid OLEDs, that offer high image quality and a tandem OLED architecture for increased efficiency and lifetime. These displays are lower in cost compared to LG's P-OLEDs, and LG brands these as ATO (Advanced Thin OLEDs) as they adopt TFE encapsulation over a glass substrate. For mass market cars ($30,000 - $50,000) LGD offers LTPS LCDs.

Researchers from South China University of Technology and Guangzhou New Vision Opto-Electronic have found that the lifetime and current efficiency of a tandem OLED device can be greatly improved by adding an ultra-thin Ytterbium (Yb) metal layer through the charge generation layer (CGL).

The experiments detail an ultra-thin Yb metal layer with low work function, high transmittance, and large atomic radii, added to a light-green tandem OLED devices. The new device exhibited a lifetime of 308 hours (T90) at an initial brightness of 10,000 cd/m² - which is 362 times (!) longer than that of a similar device without the Yb layer (T90 = 0.85 hours). The lifetime of the same material in a single-layer configuration (not a tandem device) was 49 hours (T90).

LG Display is demonstrating its new 30" and 77" transparent OLED displays for the first time, at the company's booth at K-Display 2023, in Seoul, Korea.

Credit: LG Display

The new 30" transparent OLED offers HD resolution, while the 77" panel offers 4K resolution. All of LG's latest transparent OLED displays offer 45% transparency. LG showed its entire range of T-OLED displays in a coffee shop setting, in partnership with Starbucks.

eMagin announced that it developed (and demonstrated) a 15,000 nits WUXGA (1920x1200) full-color OLED microdisplay, setting a new world record (surpassing eMagin's own 10,000 nits record from 2021).

This new microdisplay was deposited using the company's direct-patterning (dPd) technology, which means that there are no color filters. This is a single-stack device, and eMagin says that in the future it could use a tandem architecture to improve the performance further.

Apple's interest in OLED displays for future iPad tablet device is not secret, and many analysts estimate that the first such device will be released in 2024.

One of Apple's requirement is for superior performance for its tablets compared to smartphone AMOLED displays - and so developers are relying on a tandem OLED structure. According to a new report from Korea, LG Display is developing another unique technology for Apple's iPads.