Polarizer-free OLED

Next-generation OLED technologies that will enable brighter and more efficient displays

OLED displays have been gaining popularity rapidly, and are already the dominant smartphone display technology. OLEDs are also the display technology of choice in the smartwatch market, making inroads into the TV, monitor, laptop and tablet markets. The future of the OLED industry looks bright.

In recent years, the focus of the industry, beyond increasing capacity and reducing production costs, has been improving the performance of OLEDs in the areas of display brightness, efficiency, and lifetime. Brightness is required in many applications - from TVs (for HDR and to view in ambient lighting) through smartphones (outdoor viewing) to automotive, and efficiency is a plus in any scenario (but mostly in mobile displays). Display lifetime is already good enough for many applications, but in some cases (like automotive, and IT displays) it is critical. These three properties usually go together - if you can make more efficient OLED displays, you can drive them at a lower current to achieve the same brightness, and so lifetime increases, or you can achieve higher brightness, etc. 

Read the full story Posted: Jul 10,2024

TCL CSOT shows its latest OLED, MicroLED and QD-EL displays at Displayweek 2024

TCL CSOT demonstrated its latest displays, technologies and prototypes at Display Week 2024. The company is focused on inkjet printing technologies, and a lot of the displays on show were indeed printed.

So first up, we TCL demonstrated a 14" 2880x1800 400 nits 30-120Hz ink-jet printed LTPO AMOLED display. The display is produced on a glass substrate, with thin film encapsulation (a 'hybrid OLED').

Read the full story Posted: May 27,2024

Samsung Display announces the polarizer-free ECo2OLED tech

Samsung Display announced its latest OLED panel, the Eco²OLED, which increase light output by 33% compared to SDC's previous OLED panels. The increase light translates into a power consumption reduction of up to 25%.

Samsung Display Eco2 OLED vs. regular OLED

For the Eco²OLED panel, Samsung finally managed to commercialize a polarizer-free OLED, after many years of R&D. The first phone to adopt this display will be Samsung's upcoming Galaxy Fold 3. Interestingly Samsung says that the new design also enabled it to incorporate a high-quality under-the-display camera as more light is entered through the OLED.

Read the full story Posted: Aug 16,2021

BOE shows new OLED technologies at SID Displayweek 2021

BOE demonstrates several new OLED technologies at SID Displayweek 2021. First up is a new rollable display. The new display is 8-inch in size, and it features a resolution of 2592x2176 and a bending radius of 4 mm. BOE says the new display passed over 200,000 sliding cycles.

Last year at Displayweek 2020, BOE demonstrated a 12-inch rollable OLED. It has since been working with LG Electronics on the company's rollable smartphone (which was since canceled as LG withdrew from the smartphone market) and with OPPO on a 7.4-inch sliding OLED phone.

Read the full story Posted: May 18,2021

Here is Tianma's CFOT rollable AMOLED display

In March 2021 Tianma unveiled a new OLED display technology, which it refers to as CFOT OLED - a polarizer-free OLED that adopts color-filters instead to remove reflections. The company demonstrated a 8.03" CFOT OLED prototype at SID Displayweek 2021:

Tianma says that a CFOT OLED enables a thinner design, improves the light emittance and also cuts the power consumption by 20%. The 8.03" display offers a resolution of 2000x2544 (403 PPI).

Read the full story Posted: May 18,2021

Here come Samsung polarizer-free POL-LESS OLEDs

Samsung Display has been developing polarizer-free AMOLED displays for many years, and last year UBI detailed how the company plans to use color filters to eliminate the need for polarizers and so increase the efficiency of their OLED panels while also lowering the thickness.

Samsung Display POL-LESS AMOLED structure image

DSCC posted an interested article that details Samsung's upcoming polarizer-free OLEDs, which it brands as POL-LESS OLEDs. The first OLEDs to adopt this new structure are expected to be adopted in Samsung's Galaxy Fold 3 later this year.

Read the full story Posted: Mar 30,2021

UBI: OLED makers are developing color filters as replacement for polarizers in foldable OLEDs

UBI Research reports that OLED makers are aiming to adopt color filters instead of polarizers in foldable OLED displays. The polarizer help prevent internal reflections by external light, but they lower the brightness and limit the flexibility of the panel.

BOE / UBI: color-filter for foldable OLED scheme

Using color filters instead of the polarizer may enable brighter panels and also thinner ones which are more flexible. BOE has already demonstrated such a panel back in 2017 (scheme shown above) - and they said it is 23% brighter than a polarizer OLED, and it is also 110 um thinner. Samsung Display is also developing similar technology.

Read the full story Posted: Jul 12,2020

Samsung reportedly demonstrated new OLED technologies - including polarizer-free OLEDs and 1,200 PPI VR displays

According to the Korea Herald, Samsung Electronics demonstrated several new display technologies in a private room during the Mobile World Congress last month. All of these technologies are expected to enter production within the next year or two, according to the source quoted by the report.

1,200 PPI AMOLED for VR

The report claims that Samsung demonstrated a high-resolution AMOLED panel for VR applications. The AMOLED on display featured a 1,200 PPI - much higher than Samsung's current highest density displays which are 577 PPI. Samsung's aim is to reach 1,500 PPI which will greatly enhance the VR experience.

SDC 806 PPI VR OLED at SID 2016

In November 2016 Sunic Systems announced that it developed an plane-source evaporation-FMM based AMOLED production process that can reach very high densities. The 100um mask announced in November can achieve a PPI of 1,500. This may be the system that Samsung is now testing. Sunic says that eventually this technology will enable even 2,250 PPI.

Read the full story Posted: Mar 23,2017