Invited paper: Hybrid transflective displays using vertically integrated transparent OLED and reflective LCD

Jiun Haw Lee; Haiqing Xianyu; Zhibing Ge; Xinyu Zhu; Yen Hsun Lu; Chao Wen Teng; Kou Chen Liu; Shin Tson Wu

doi:10.1889/1.2785686

Invited paper: Hybrid transflective displays using vertically integrated transparent OLED and reflective LCD

Jiun Haw Lee^*, Haiqing Xianyu, Zhibing Ge, Xinyu Zhu, Yen Hsun Lu, Chao Wen Teng, Kou Chen Liu, Shin Tson Wu

^*Corresponding author for this work

Department of Electronic Engineering

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

We demonstrate a hybrid device by vertically integrating a reflective LCD and a transparent OLED. The vertical alignment (VA) LC cell operated at normally black (NB) mode is placed beneath the transparent OLED to improve device transmittance. Under dark ambient, OLED is the primary display but the NBRLCD absorbs the incoming light which in turn increases the ambient contrast ratio (A-CR). However, it also absorbs the photons from the OLED emission and decreases the efficiency. In our hybrid device, by placing the transparent OLED on top of the reflective LCD, the transmittance of the hybrid device is enhanced by 57.3% due to the asymmetric emission intensities from both sides of the transparent OLED. Under bright ambient conditions, the OLED could be washed out but the RLCD is activated. Hence, the tandem display exhibits a high contrast ratio (>105:1) under any ambient light conditions.

Original language	English
Pages (from-to)	1810-1812
Number of pages	3
Journal	Digest of Technical Papers - SID International Symposium
Volume	38
Issue number	2
DOIs	https://doi.org/10.1889/1.2785686
State	Published - 2007
Event	2007 SID International Symposium - Long Beach, CA, United States Duration: 23 05 2007 → 25 05 2007

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title = "Invited paper: Hybrid transflective displays using vertically integrated transparent OLED and reflective LCD",

abstract = "We demonstrate a hybrid device by vertically integrating a reflective LCD and a transparent OLED. The vertical alignment (VA) LC cell operated at normally black (NB) mode is placed beneath the transparent OLED to improve device transmittance. Under dark ambient, OLED is the primary display but the NBRLCD absorbs the incoming light which in turn increases the ambient contrast ratio (A-CR). However, it also absorbs the photons from the OLED emission and decreases the efficiency. In our hybrid device, by placing the transparent OLED on top of the reflective LCD, the transmittance of the hybrid device is enhanced by 57.3% due to the asymmetric emission intensities from both sides of the transparent OLED. Under bright ambient conditions, the OLED could be washed out but the RLCD is activated. Hence, the tandem display exhibits a high contrast ratio (>105:1) under any ambient light conditions.",

author = "Lee, {Jiun Haw} and Haiqing Xianyu and Zhibing Ge and Xinyu Zhu and Lu, {Yen Hsun} and Teng, {Chao Wen} and Liu, {Kou Chen} and Wu, {Shin Tson}",

year = "2007",

doi = "10.1889/1.2785686",

language = "英语",

volume = "38",

pages = "1810--1812",

journal = "Digest of Technical Papers - SID International Symposium",

issn = "0097-966X",

publisher = "John Wiley and Sons Inc",

number = "2",

note = "2007 SID International Symposium ; Conference date: 23-05-2007 Through 25-05-2007",

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T1 - Invited paper

T2 - 2007 SID International Symposium

AU - Lee, Jiun Haw

AU - Xianyu, Haiqing

AU - Ge, Zhibing

AU - Zhu, Xinyu

AU - Lu, Yen Hsun

AU - Teng, Chao Wen

AU - Liu, Kou Chen

AU - Wu, Shin Tson

PY - 2007

Y1 - 2007

N2 - We demonstrate a hybrid device by vertically integrating a reflective LCD and a transparent OLED. The vertical alignment (VA) LC cell operated at normally black (NB) mode is placed beneath the transparent OLED to improve device transmittance. Under dark ambient, OLED is the primary display but the NBRLCD absorbs the incoming light which in turn increases the ambient contrast ratio (A-CR). However, it also absorbs the photons from the OLED emission and decreases the efficiency. In our hybrid device, by placing the transparent OLED on top of the reflective LCD, the transmittance of the hybrid device is enhanced by 57.3% due to the asymmetric emission intensities from both sides of the transparent OLED. Under bright ambient conditions, the OLED could be washed out but the RLCD is activated. Hence, the tandem display exhibits a high contrast ratio (>105:1) under any ambient light conditions.

AB - We demonstrate a hybrid device by vertically integrating a reflective LCD and a transparent OLED. The vertical alignment (VA) LC cell operated at normally black (NB) mode is placed beneath the transparent OLED to improve device transmittance. Under dark ambient, OLED is the primary display but the NBRLCD absorbs the incoming light which in turn increases the ambient contrast ratio (A-CR). However, it also absorbs the photons from the OLED emission and decreases the efficiency. In our hybrid device, by placing the transparent OLED on top of the reflective LCD, the transmittance of the hybrid device is enhanced by 57.3% due to the asymmetric emission intensities from both sides of the transparent OLED. Under bright ambient conditions, the OLED could be washed out but the RLCD is activated. Hence, the tandem display exhibits a high contrast ratio (>105:1) under any ambient light conditions.

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DO - 10.1889/1.2785686

M3 - 会议文章

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SN - 0097-966X

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EP - 1812

JO - Digest of Technical Papers - SID International Symposium

JF - Digest of Technical Papers - SID International Symposium

IS - 2

Y2 - 23 May 2007 through 25 May 2007

ER -

Invited paper: Hybrid transflective displays using vertically integrated transparent OLED and reflective LCD

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