Apple Micro LED new patent exposure to enhance the stability of micro devices

Apple acquired the Micro LED display technology company LuxVue Technology two years ago, and has tightened the patents on micro-light-emitting diodes (Micro LED), making every move more eye-catching. Earlier, LuxVue was exposed to new patented technology, and the content was related to the stability technology of the micro device array structure.

LuxVue applied for the micro-device stability technology patent on November 3, 2015, and was another continuation of the same-name patent applied for on April 8 of the same year. According to the USPTO, the patented technology includes a special stabilization layer that stabilizes the array of microdevices on the substrate, such as miniaturized LED devices, microchips, etc., and ensures that during the transfer process. Maintaining stability.

The special stabilizing layer is made of a thermoset such as epoxy (Epoxy) or Benzocyclobutene (BCB). According to the patent data diagram, the stable layer structure contains a hole-shaped and column array; the column array spacing is about 1 to 100 micrometers, and each of the stable cylinders is located at the center of the hole, surrounded by an outer wall, and the upper part of the column is a micro device.

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A cross-sectional view of a stable layer of holes and a column array structure. Above the cylinder (152) is a micro-device (105) surrounded by an outer wall (147). (Source: USPTO)

This patent does not further explain the future application, but it also shows that LuxVue continues to improve the structure and transfer technology of Micro LED, in order to be more precise and stable. While Apple developed organic light-emitting diode (OLED) display technology, it also actively deployed a new generation of display technology Micro LED. In addition to the advantages of low power consumption, high brightness, and high resolution, Micro LEDs are also a feature of integrating sensors. Therefore, the application landscape will be wider in the future, and it is not limited to the new generation of Apple Watch that has been rumored in the industry recently. It indicates that the appearance of Micro LED will directly replace OLED. After all, there are still many variables. It is still too early to talk about the next generation Apple Watch using Micro LED.

Micro LED technology is not yet mature, and there are still many technical bottlenecks to be overcome. Of course, cost is another consideration, let alone cooperate with driver IC, detection, terminal application and other aspects. It is not easy to achieve commercial mass production in a short time. It may take three to five years to reach the fastest.

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