1. Durability: Since wearable devices need to be worn all the time, OLED displays need to have high durability to withstand the impact of daily use such as bumping and bending.
  2. Drive circuit design: Due to the flexibility of OLED screens, it is difficult to apply traditional drive circuits to flexible electronic devices. Therefore, it is necessary to redesign the driving circuit to adapt to the flexible characteristics of the OLED display to make it more stable and save power.
  3. Energy consumption: The energy consumption of OLED is relatively low at low brightness, but the energy consumption at high brightness is still high. Therefore, developing more energy-efficient OLED display technologies remains a challenge.
  4. Production cost: OLED production cost is still high. Applications in wearable devices require inexpensive production methods and materials to make OLED a more widely available technology.
  5. Pixel damage: OLED display screens may suffer from pixel damage and screen burn-in during long-term use. These issues need to be effectively resolved to ensure the stability and lifetime of OLED displays.