Leyard Micro LED Mass Transfer Tech
Micro LED display technology miniaturizes the conventional LED design structure to the micron level, and arrays these tiny chips through mass transfer technology to become display pixels that can be controlled by a single drive, achieving high brightness, low-energy consumption, high resolution and high saturation.
Mini LED display: chip with a size of 100-300μm in two dimensions, and the display product is manufactured by flip-chip packaging through ordinary or massive transfer methods;
Micro LED display: less than 100μm in two dimensions, and the display product is manufactured by flip- chip packaging through massive transfer mode;
Four mass-produced Micro LED commercial display products, including 40-inch 2k (P0.4), 54-inch 2k (P0.6), 67-inch 2k (P0.7) and 81-inch 2k (P0.9) are launched.
Unlike the unexpected appearance of fine-pitch LED products a decade ago, the new multi-size, standardized, and mass-produced Micro LED display products are a response to public needs and have been officially launched to the market for real-life commercial applications.
Unlike the applications of small-size LED displays, the applications of super-size LED displays put more emphasis on product stability, reliability, maintainability, color uniformity, high-density ultra-high- definition image quality, and low-energy consumption.
Super-size displays can reach tens of square meters or even hundreds of square meters, which poses a certain challenge to the uniformity of the display screen. However, the current COB Micro LED is difficult to detect and divide into bin, which limits its application in super-size screens.
Leyard released the first 0.4 pitch ultra-high-definition Micro LED commercial displays. This product adopts the finest size of chip in the current application scenarios on the market, and currently can achieve 81 inches 4K and 162 inches 8K.
The product employs full flip-chip technology to avoid the shielding of light by the electrodes and maximize the light output area and light output efficiency of the chip. At present, the product can achieve a brightness of 2500nit and a contrast ratio of 20,000:1, and realize HDR2.0 display with better image quality.
In March 2019, Leyard collaborated with internationally renowned panel driver manufacturers to develop a new generation of Micro LED driver chips; in May 2020, the driver chip was successfully developed and verified in small batch production. The chips have been applied in mass-produced Micro LED commercial display products.