Mini-LEDs

Apple's latest iPad Pro tablets use a mini-LED backlit LCD (which Apple refers to as Liquid Retina XDR). While most reviews of the new display are quite positive, some users are complaining of "blooming" - the edges of bright objects on dark backgrounds tend to 'bleed' as the dimming zone is not small enough.

miniLEDs improve over LCD as they introduce thousands of dimming zones, which increases contrast and improves power consumption. The dimming zones, however, are sometimes not small enough, as some users find out, and cannot compete with an emissive technology such as OLED or microLED.

Micro-LED and mini-LED developer Rohinni announced that the company has developed a new design for its miniLED composite bondhead, which now allows multiple bondheads to run in parallel. Rohinni says it has been able to accelerate its miniLED deposition speed 14X compared to 'competing technologies'.

With the new system, Rohinni demonstrated >99.999% placement yield and scalability at speeds greater than 100 die per second. said that it developed a new placement technology for mini-LED that doubles the placement speed compared to its previous technology.

Taiwan-based STAr Technologies launched a new inspection system for MicroLEDs and mini-LEDs devices. the Unicorn-LAIT is an integrated system with parallel test instrument, probe station and probe cards and can meet mass production needs.

STAr says that its new system enables alignment of up to 6-inch wafers and probe cards for automatic probing test. The parallel test instrument will be based on STAr Taurus-LPX with PMU capable of performing 48 to a maximum of 240 LEDs in parallel. Attributed to the efficient system structure, The STAr Unicorn-LAIT is suitable for the LED industry chip maker and optical devices manufacturer.