[Display Week 2018] Micro LED Attracts Audience’s Attention and Becomes the Focus of the Exhibition

Display Week, held by SID (Society for Information Display), is a world-famous display forum and exhibition. It was held in Los Angeles this year, attended by renowned display manufacturers. As the market attention of Micro LED gradually increases, LEDinside is on spot to provide the latest display market information for you.

Noticeably, in the innovation exhibition area iZone, relevant Micro LED booths absorbed the greatest attention from the visitors, especially those of ITRI and PlayNitride from Taiwan, exhibiting full-color Micro LED displays that drew a great many visitors’ eyes.

At Display Week 2018, ITRI showcases a 960x540 single-color array module and a 640x360 full-color Micro LED array module. With the solution based on Si-based CMOS backplane, active-matrix fixed-point drive can be achieved and the brightness can come to 20K nits. In the future, it will be introduced in AR projection applications so as to solve the problem of inadequate luminance commonly appeared in AR projection products.

During the exhibition, PlayNitride shows two transparent displays including a 2.65-inch and a 3.12-inch full-color Micro LED displays. The 3.12-inch Micro LED display, with resolution of 256 x 256, is the latest product exhibited by the company. By transferring Micro LED to the transparent substrate and with the size of each chip smaller than 30µm, visual effect of penetrating the panel can be seen on site. Regardless of comparatively low resolution, this display uses more than 786 thousand pieces of RGB Micro LED chips with a view to prove its capability of mass transfer.

Besides, founded in 2015, Hongkong JBD also showcases Micro LED product. It uses wafer bonding to achieve Micro LED wafer level transfer to make it into a single-color Micro LED module. At Display Week 2018, the brightness of green Micro LED module has come to 50K nits. In addition, the single-color matrix Micro LED module of JBD features resolution of 640 x 480 and it is an active-matrix fixed-point drive fitted with Si-based CMOS backplane. Moreover, JBD displays its AR projection mainframe as well, which differs from other manufacturers who only show their Micro LED light sources. In terms of this AR projection mainframe, it consists of three RGB single-color matrix modules and is fitted with a three-panel LCD structure. It can achieve color projection through the combination of RGB single-color chips and ensures high color brightness without time-sharing projection.

Korean ADRC (Advance Display Research Center) exhibits a single-color Micro LED module. Even though the chip size is 125x125µm, resolution of the single-color module is only 32x32. In addition, it matches blue LED chip with QD to convert green and red LEDs of 535nm and 632nm. Despite the fact that LED dimension is not very small with relatively few pixels, ADRC points out that its product is an active drive solution based on the LTPS TFT backplane of 2T1C. Especially, its LTPS TFT, using LTPS TFT of BLA (Blue Laser Annealed), is more cost-competitive than ELA LTPS TFT.

Author Roger / LEDinside

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