49‐1: Invited Paper: Novel Brightness Enhancement Technology for Reflective LCDs

Reflective LCDs have a great advantage of low power consumption, but the brightness is not consistently sufficient because ambient light is used as a light source. To increase light efficiency, we combined reflective LCDs and the Pancharatnam‐Berry deflector (PBD), a diffractive optical element that...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2024-06, Vol.55 (1), p.658-661
Main Authors: Saigusa, Ryosuke, Usukura, Naru, Sakai, Akira, Kawahira, Yuichi, Oyama, Takeshi, Minoura, Kiyoshi
Format: Article
Language:English
Subjects:
Brightness
deflector
diffraction
Diffractive optical element
Diffractive optical elements
High light efficiency
Incident light
Light sources
Optical components
Pancharatnam-Berry
Reflective LCD
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Summary:Reflective LCDs have a great advantage of low power consumption, but the brightness is not consistently sufficient because ambient light is used as a light source. To increase light efficiency, we combined reflective LCDs and the Pancharatnam‐Berry deflector (PBD), a diffractive optical element that controls the propagation of incident light. We confirmed that on‐axis brightness is increased by 2.2 times against the incident collimated light from a polar angle of 30° when compared to a reflective LCD without PBD.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.17610