The Heterogeneous Packaging of A 3 × 3 Mini-Led Array for Smart Contact Lens Applications

Cheng Wei Tsai, Guan Ting Yeh, Shun Hsi Hsu, Shin Ho Wu, Yu Hsuan Huang, Her-Ming Chiueh, Jin Chern Chiou*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study focuses on the integration of a 3 × 3 LED array, a driver chip, and an antenna into a HEMA-based contact lens. To ensure biocompatibility and comfortable wearing, the thickness of the contact lens must be less than 200 μm. To achieve this, a flexible substrate was utilized, along with a wireless powering antenna and metal wire for interconnecting the driver chip and Mini-LED array. The system employs 920 MHz RFID technology for the power/data transmission. The chip of the lens can receive 100 μW when the RFID reader's antenna is 2 cm away, which can drive about 30 μA to the Mini-LED. Real-time control of the Mini-LED display array can be achieved by sending instructions using RFID protocol.

Original languageEnglish
Title of host publication2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages449-452
Number of pages4
ISBN (Electronic)9784886864352
StatePublished - 2023
Event22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023 - Kyoto, Japan
Duration: 25 Jun 202329 Jun 2023

Publication series

Name2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023

Conference

Conference22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023
Country/TerritoryJapan
CityKyoto
Period25/06/2329/06/23

Keywords

  • Biocompatibility materials
  • Heterogeneous integration
  • Hydroxyethyl Methacrylate
  • Micro Display
  • Mini-LED Array
  • Polychloroparaxylylene
  • Smart Contact lens
  • UHF RFID
  • Wireless powering

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