Fabrication and optical design of pyramid microstructure on the base of light guide used for the backlight module

Jee-Gong Chang; Chien-Wei Liu; Yu-Bin Fang; Jian-Ming Lu; Wang-Long Li; Shin-Pon Ju

doi:10.1117/12.863358

22 October 2010 Fabrication and optical design of pyramid microstructure on the base of light guide used for the backlight module

Jee-Gong Chang, Chien-Wei Liu, Yu-Bin Fang, Jian-Ming Lu, Wang-Long Li, Shin-Pon Ju

Author Affiliations +

Proceedings Volume 7657, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; 76571Q (2010) https://doi.org/10.1117/12.863358
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

This paper proposed the pyramid microstructure (PYM) used on the base of the light guide as the micro-optical components to replace the conventional diffuser dot made by direct etching on the steel stamper. The PYM is made by MEMS technology, which uses silicon wafer as original mold of PYM and to replicate it on Ni micro-mold by using electroforming method. The effective optical design tool is used to find the optimal distribution of the PYM, which integrates the random microstructure generation scheme developed based on the molecular dynamics method and the optical commercial software. The SEM images show the intact PYM can be produced on the Si micro-mold and replicated fully on the Ni micro-mold by the electroforming process. The intact PYM on the base of the light guide can also be produced by the injection molding showing the complete transformation of the Ni micro-mold to the light guide. The luminance measurement of a 2.4 inches backlight module with 4 LEDs shows the average luminance of 4769 nit with 86.3% uniformity for the PYM on the base of light guide, which is 10% higher than that for the diffuser dot microstructure.

Citation Download Citation

Jee-Gong Chang, Chien-Wei Liu, Yu-Bin Fang, Jian-Ming Lu, Wang-Long Li, and Shin-Pon Ju "Fabrication and optical design of pyramid microstructure on the base of light guide used for the backlight module", Proc. SPIE 7657, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 76571Q (22 October 2010); https://doi.org/10.1117/12.863358

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Waveguides

Nickel

Silicon

Diffusers

Etching

Optical design

Chemical species

Show All Keywords

Keywords/Phrases

Search In:

Publication Years