Noncontact sensing of electric potential using electroluminescence effects

DaeHwa Jeong; Ju-Hyeon Lee; Ick-June Yune; Sang-Hoon Chae; B. B. Bhattarai

doi:10.1117/12.444103

4 October 2001 Noncontact sensing of electric potential using electroluminescence effects

DaeHwa Jeong, Ju-Hyeon Lee, Ick-June Yune, Sang-Hoon Chae, B. B. Bhattarai

Proceedings Volume 4564, Optomechatronic Systems II; (2001) https://doi.org/10.1117/12.444103
Event: Intelligent Systems and Advanced Manufacturing, 2001, Boston, MA, United States

Abstract

A new voltage sensing method has been tried using a n electro-luminescence effect. Optical images of the electric potential of conductive planar patterns could be obtained by this method. The brightness of the sensor surface is proportional to the voltage that is applied to the pattern electrode and the image is captured. By processing the image, defective part of the pattern electrode can be identified. This method is contact-free so that it can be applied to what is covered by an insulator layer. Also, we propose a driving method of the sensor that enables measuring DC voltages. This method may be applied to what is covered by an insulator layer. Also, we propose a driving method of the sensor that enables measuring DC voltages. This method may be applied to inspect the fine conductive patterns in non-contacting way during the fabrication process of display devices such as thin film transistor liquid crystal display panels.

Citation Download Citation

DaeHwa Jeong, Ju-Hyeon Lee, Ick-June Yune, Sang-Hoon Chae, and B. B. Bhattarai "Noncontact sensing of electric potential using electroluminescence effects", Proc. SPIE 4564, Optomechatronic Systems II, (4 October 2001); https://doi.org/10.1117/12.444103

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available