Micro-LED News - Page 1

Shanghai-based Micro-LED microdisplay developer JBD unveiled two new Micro-LED microdisplay prototypes. First up is the JBD5UM720P-G, a 0.31" 720p (1780x720, 5,000 PPI) display that features a typical brightness of 3 million nits (!). This is a monochrome green (530 nm) display.

The second display, the JBD25UMFHD-B is a higher density display, at 10,000 PPI it achieves a 2560x1440 resolution in the same 0.31" size. This is a monochrome blue (455 nm) display that has a brightness of 150,000 nits. The display's refresh rate is 360Hz.

Taiwan's Industrial Technology Research Institute (ITRI) demonstrated a 16.7" microLED display "module" that was produced by directly mass transferring micro-LED chips onto a PCB backplane.

ITRI developed its own mass transfer tech, and uses microLEDs provided by PlayNitride, PCB backplanes provided by Unimicron and drivers and assembly by Macroblock. The 16.7" display is made by tiling 15 modules 6x10 cm each (45,000 LEDs). The microLEDs are <100um in pitch.

In December 2019, China-based display maker Konka launched its tiled large micro-LED displays, under the APHAEA brand. The company demonstrated two such displays (4K and 8K) at CES 2020, as you can see below:

Konka's MicroLEDs are modular displays (similar to Samsung's The Wall and Sony' Crystal LED displays).

MICLEDI, established in Belgium in 2019 as a spin-off from IMEC, announced that it raised €4.5 million to develop next-generation microLED microdisplays for AR applications.

MICLEDI says that it displays will be the smallest and possible on the market - enabled by its new integration technology for microLED on 300 mm wafers, developed in collaboration with imec.

Seoul Viosys and Seoul Semiconductors have jointly developed a new MicroLED technology, called Micro Clean LED that basically packages three separate LEDs (red, green and blue) into a single "one-single MicroLED pixel".

The idea is that these packaged colored pixels will be easier to transfer to the target substrate compared to the transfer of three different LEDs. The package itself does not contain any driver ICs.

Researchers from the Korea Advanced Institute of Science and Technology (KAIST) developed a new process that enables the fabrication of highly dense MicroLED displays - up to 63,500 PPI (!).

The technique involves stacking RGB LEDs in three dimensions and a semiconductor patterning process. Stacking LEDs one on top of the other creates color interference issues, and to overcome this the researchers deposited an insulating film between the layers. This also improved the efficiency of the microLED devices.

Samsung announced that it will introduce new modular MicroLED TVs for the consumer market (The wall Luxury) in 2020, with 75", 88", 93", 110", 146", 150", 219" and 292" size options. It's professional The Wall MicroLED TVs are fully customized in size.

Samsung is showing these next-generation TVs at CES 2020 - as you can see in the videos above and below - some very nice demonstrations!

Samsung announced that it will introduce new modular MicroLED TVs for the consumer market (The wall Luxury) in 2020. Samsung says it takes advantage of "production improvements" to introduce new size options - and brighter panels.

In addition to the currently available 75, 146, 219 and 292 inch options, Samsung will now offer 88, 93, 110 and 150 inch displays, that will feature peak brightness of 5,000 nits (up from 2,000 in the previous models).

Taiwan-based LED producer Epistar is in talks with China-based LED display maker Leyard Opto-Electronic to setup a Mini-LED and Micro-LED production site in Wuxi, China. The two companies (actually Leyard and Epistar's subsidiary Yenrich Technology) will setup a joint-venture with a budget of $142 million.

Leyard says that the plan is to form the joint venture six months after getting the final approval for the plan. This will enable the production to begin in the new fab in 2023. It is still not clear whether the new fab will produce mini and micro LED chips - or actual displays.

2019 is soon over - and it was another interesting year for the MicroLED industry - as we've seen more R&D activities, new prototypes and announcements - and promises of new product launches in 2020.

Here are the top 10 stories posted on MicroLED-Info in 2019, ranked by popularity (i.e. how many people read the story):

1. VueReal developed a 30,000 PPI micro-LED microdisplay, will start accepting orders for samples soon (May 12)
2. Samsung now offers the Wall Luxury microLED tiled displays globally (Sep 30)
3. We talk Micro-LED technology and market with Yole Développement (Jan 16)
4. Glo demonstrate its LTPS and CMOS MicroLED displays (Feb 7)
5. Samsung shows 75" and 219" Micro-LED displays at CES 2019 (Jan 7)
6. Sony reveals its Cystal-LED MicroLED display prices in Europe (Aug 2)
7. TCL demonstrates an early Micro-LED prototype display (Jan 11)
8. Sony to install a 16K 19 meters long Cledis microled display at Shiseido's Yokohama R&D center (Apr 11)
9. See PlayNitride's latest flexible and transparent Micro-LED prototypes (Jul 19)
10. Sanan to setup a $1.8 billion Mini-LED and Micro-LED production center in Hubei, China (Apr 29)