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

You might also read

Related Articles

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

Sort by
Same author

Packaged structure optimization for enhanced light extraction efficiency and reduced thermal resistance of ultraviolet B LEDs.

Optics express·2024
Same author

Wide heart-shaped mini-LEDs without a second lens as a large area, ultra-high luminance, and flat light source.

Optics express·2024
Same author

Spectral analysis with highly collimated mini-LEDs as light sources for quantitative detection of direct bilirubin.

Discover nano·2024
Same author

Zero-optical-distance mini-LED backlight with light-guiding microstructure lens for extra-thin, large-area notebook LCDs.

Optics express·2024
Same author

High-sensitivity flip chip blue Mini-LEDs miniaturized optical instrument for non-invasive glucose detection.

Discover nano·2024
Same author

Using Blue Mini-LEDs as a Light Source Designed a Miniaturized Optomechanical Device for the Detection of Direct Bilirubin.

Nanoscale research letters·2022

Related Experiment Video

Updated: Jun 29, 2025

Planar and Three-Dimensional Printing of Conductive Inks
10:49

Planar and Three-Dimensional Printing of Conductive Inks

Published on: December 9, 2011

37.1K

Full-angle chip scale package of mini LEDs with a V-shape packaging structure.

Chia Chun Hu, Yang Jun Zheng, Chun Nien Liu

    Optics Express
    |April 4, 2024
    PubMed
    Summary

    This study introduces a novel primary optical design for light-emitting diodes (LEDs) to achieve full-angle emission without lenses. This innovation enhances uniformity and reliability for large-area LED applications.

    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

    9.3K
    Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies
    08:21

    Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

    Published on: March 20, 2015

    12.4K

    Related Experiment Videos

    Last Updated: Jun 29, 2025

    Planar and Three-Dimensional Printing of Conductive Inks
    10:49

    Planar and Three-Dimensional Printing of Conductive Inks

    Published on: December 9, 2011

    37.1K
    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

    9.3K
    Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies
    08:21

    Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

    Published on: March 20, 2015

    12.4K

    Area of Science:

    • Optics and Photonics
    • Solid-State Lighting

    Background:

    • Light-emitting diodes (LEDs) typically exhibit Lambertian light distribution.
    • Secondary optics are often required to modify LED light distribution for uniform, large-area applications.
    • Existing secondary optical components present challenges like alignment, aging, and reduced reliability.

    Purpose of the Study:

    • To propose a primary optical design for achieving full-angle emission in LEDs without secondary optical components.
    • To overcome the limitations associated with traditional secondary optics in LED applications.

    Main Methods:

    • Utilized a flip-chip as the light source.
    • Developed a V-shaped packaged structure incorporating a white wall layer, optical structure layers, and a V-shaped diffuse structure.
    • Focused on primary optical design to achieve desired light distribution.

    Main Results:

    • Achieved full-angle emission from LEDs without lenses.
    • Experimental results showed a peak intensity angle of 77.7°.
    • Observed a 20.3% decrease in central point intensity ratio and a full width at half maximum (FWHM) of 175.5°.

    Conclusions:

    • The proposed primary optical design enables full-angle emission in LEDs, eliminating the need for lenses.
    • This approach enhances reliability and allows for thinner light source modules.
    • The design is well-suited for thin, large-area, and flexible backlight applications.