Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

295
Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
295

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Application of <i>Bombyx mori</i> Silk Fibroin Films for Liquid-Crystal Devices.

ACS applied bio materials·2022
Same author

Circularly polarized optical microscope using a low aberration liquid crystal lens.

Optics letters·2021
Same author

Imaging of nanoscale birefringence using polarization-resolved chromatic confocal microscopy.

Optics express·2021
Same author

Applying Tamm plasmon polaritons for determining the birefringence of a thin film.

Optics letters·2021
Same author

Low-aberration liquid crystal lens with positive and negative focal length.

Optics letters·2020
Same author

Tunable Surface Wettability of ZnO Nanoparticle Arrays for Controlling the Alignment of Liquid Crystals.

ACS applied materials & interfaces·2015

Related Experiment Video

Updated: Sep 13, 2025

Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

9.4K

Inspection of micro-LED dies by using liquid crystal films.

Shuo-Hsien Chen, Yan-Rung Lin, Shie-Chang Jeng

    Optics Letters
    |August 2, 2025
    PubMed
    Summary

    This study introduces a new method for inspecting tiny micro-light-emitting diode (micro-LED) dies using liquid crystal films. This technique detects micro-LED voltage via photovoltaic effects, overcoming traditional inspection challenges.

    Area of Science:

    • Optoelectronics
    • Materials Science

    Background:

    • Micro-light-emitting diode (micro-LED) technology is advancing rapidly, with devices shrinking to micron sizes, making them ideal for next-generation displays.
    • Traditional inspection methods like electroluminescence face significant challenges with these minuscule micro-LED dies.
    • Efficient and reliable inspection methods are crucial for the mass production and commercialization of micro-LED displays.

    Purpose of the Study:

    • To develop a novel, non-destructive inspection method for micro-LED dies.
    • To overcome the limitations of existing electroluminescence-based inspection techniques for small-sized micro-LEDs.
    • To demonstrate the feasibility of using liquid crystal films for detecting micro-LED electrical properties.

    Main Methods:

    • A liquid crystal (LC) film was placed over a micro-LED wafer for inspection.

    More Related Videos

    In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM
    10:42

    In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM

    Published on: June 16, 2016

    9.4K
    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    11.8K

    Related Experiment Videos

    Last Updated: Sep 13, 2025

    Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
    08:17

    Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

    Published on: May 25, 2016

    9.4K
    In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM
    10:42

    In Depth Analyses of LEDs by a Combination of X-ray Computed Tomography CT and Light Microscopy LM Correlated with Scanning Electron Microscopy SEM

    Published on: June 16, 2016

    9.4K
    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    11.8K
  • Micro-LED dies were illuminated, generating an open-circuit voltage via the photovoltaic effect.
  • Changes in the transmittance of the LC film were observed to detect the generated voltage.

    • Main Results:

    • The proposed method successfully detected open-circuit voltages generated by micro-LED dies.
    • Voltages of several volts were effectively detected using the liquid crystal film.
    • This technique provides a new approach for inspecting micro-LED dies without traditional electrical probing.

    Conclusions:

    • The liquid crystal film method offers a promising, novel approach for inspecting micro-LED dies.
    • This technique leverages the photovoltaic effect for non-contact voltage detection, addressing current inspection challenges.
    • The successful detection of voltages indicates the potential for this method in micro-LED quality control and manufacturing.