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Design and fabrication of a micropatterned polydimethylsiloxane (PDMS) light‐guide plate for sheet‐less LCD backlight unit
Author(s) -
Lee JooHyung,
Lee HongSeok,
Lee ByungKee,
Choi WonSeok,
Choi HwanYoung,
Yoon JunBo
Publication year - 2008
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2841867
Subject(s) - backlight , polydimethylsiloxane , diffuser (optics) , materials science , photoresist , liquid crystal display , microlens , fabrication , light guide , luminance , soft lithography , optics , optoelectronics , composite material , light source , lens (geology) , layer (electronics) , physics , medicine , alternative medicine , pathology
— A polydimethylsiloxane (PDMS) light‐guide plate (LGP) having micropatterns with an inverse‐trapezoidal cross section was developed for a sheet‐less LCD backlight unit (BLU). The micropatterned PDMS LGP was fabricated by backside 3‐D diffuser lithography followed by two consecutive PDMS replication processes: photoresist‐to‐PDMS and PDMS‐to‐PDMS replications. The fabricated LGP showed an average luminance of 2878 nits and a uniformity of 73.3% in a 2‐in. backlight module with four side‐view 0.85‐cd LEDs. It also could feasibly be applied to a light source for flexible displays owing to the flexible characteristic of the PDMS itself.