Session Index

Display Technology

Poster Session II
Thursday, Dec. 7, 2017  15:30-17:00
Presider: -
Room: International Research Building 5F
Paper No.  2017-THU-P0702-P001
Wu Yo Tang Award Candidate Highly Efficient Organic Light-Emitting Diodes Based on Exciplex System
Wu Yo Tang

We demonstrate an exciplex phosphorescent organic light-emitting diode (OLED) exhibiting high efficiency, low operational voltage, and low efficiency roll-off characteristics. The improved performance of the device originates from the efficient energy transfer from both the singlet and triplet energy levels to the phosphorescent dopant via the exciplex formed.

Paper No.  2017-THU-P0702-P002
Wen-Yi Yang Award Candidate Photoinduced textural switching by polarized ultraviolet light in an azo-chiral-doped liquid crystal
Wen-Yi Yang;Yu-Lin Shen;Po-Chang Wu;Wei Lee

The effect of polarized ultraviolet light on the photoinduced textural transition in an azo-chiral-doped liquid crystal cell is investigated. Using polarized ultraviolet light can lower the light intensity required for unwinding LC helices. Varying the light polarization state can switch the cell between the helical cholesteric and unwound nematic states.

Paper No.  2017-THU-P0702-P003
Shih-Siang Yan Award Candidate Study on Fabrication of Fine-Pitch Red Micro-LED Displays
Shih-Siang Yan;Huan-Yu Chien;Ken-Yen Chen;Dong-Sing Wuu;Ray-Hua Horng

Fabrication of red-light micro-LED display with 64 x 32 pixels was developed. Transparent sapphire substrate was used to replace the original GaAs substrate by flip-chip and epilayer-transferred technique. The luminance of micro-LED is three times brighter than the luminance of OLED as operating in the same driving mode.

Paper No.  2017-THU-P0702-P004
Chi-Che Chen Award Candidate Effects of polymer-assisted vertical alignment on the electro-optical properties of in-plane-switching-based liquid crystal devices
Chun-Ying Yang;Chi-Che Chen;Guan-Jhong Lin;Tien-Jung Chen;Jin-Jei Wu

A simple alignment method for fabricating vertically aligned in-plane switching liquid crystal cells is proposed. A non-uniform vertical electric field and monomer are employed in the VA-IPS LC cells during the photo-curing process.Compared to the conventional VA-IPS cell, the proposed cell shows a lower driving voltage and good response time

Paper No.  2017-THU-P0702-P005
Sheng-Ping Chiang Award Candidate Optically controlled mid-infrared polarization rotator
Sheng-Ping Chiang;Chun-Ta Wang;Jui-Yu Lai;Chia-Lun Tsai;Cheng-Chang Li;Hung-Chang Jau;Chien-Tsung Hou;Shang-Da Yang;Tsung-Hsien Lin

We proposes an optically controlled mid-infrared polarization rotator that incorporates a twisted nematic liquid crystal (TNLC) device using a photo-alignment material.The photo-alignment method can be generated arbitrary twisting angles by the use of visible polarized light. Therefore, a linearly polarized mid-IR light beam with arbitrary rotation angles can be realized.

Paper No.  2017-THU-P0702-P006
Jun-Wei Huang Award Candidate Electrically controllable random lasing of dye-doped nematic liquid crystal laser inside Capillary fiber
Jun-Wei Huang

We demonstrated the random lasers (RLs) from dye-doped nematic liquid crystals (DD-LCs) into the Capillary fiber (CF). After applying external sinusoidal voltage on the CF, the emission intensity of (RLs) would be obviously enhanced resulted from the enhancement of serious light scattering inside CF.

Paper No.  2017-THU-P0702-P007
Ting-Mao Feng Tri-stable cholesteric liquid crystal smart window with multi-electrode driving
Ting-Mao Feng;Cheng-Chang Li;Heng-Yi Tseng;Chun-Wei Chen;Chun-Ta Wang;Hung-Chang Jau;Yu-Ching Wu;Wen-Hao Hsu;Tsung-Hsien Lin

The CLC can be switched between focal-conic and planner states; furthermore, the ULH state is also achieved by a pulse voltage under IPS. By the use of dye doped CLC with reflection band in non-visible light, it becomes a functional window which can be switched between three stable states.

Paper No.  2017-THU-P0702-P008
Yi-Shou Tsai High Ambient Contrast Ratio OLED Device with Optical Film
Yi-Shou Tsai;Yu-Ju Chao;Yu-Hsiang Liu;Jian-Lung Chen;Kuan-Ting Chen

Organic light emitting diode (OLED) displays usually have applied in commercial products. However, the ambient contrast ratio of OLED devices is still a question. In this paper, we propose an optical film integrated with the OLED device and the ambient contrast ratio is 20.6 at 500 lux of ambient light.

Paper No.  2017-THU-P0702-P009
Siao Huei Jhen Fabrication of metal:Liq composite/metal/HATCN interconnecting layers for high efficiency of tandem white organic light emitting devices
Siao Huei Jhen;Chi Chien An;Li Jung Yu;Chen Shih Pu

In this study, We fabricated metal:Liq composite/metal/HATCN as interconnecting layer for tandem WOLEDs . We found that electron injection efficiency increases with more doping concentration of Liq in thicker metal :Liq composite layer.The maximum brightness and efficiency for the tandem WOLEDs are 52,358 cd/m2 and 92 cd/A

Paper No.  2017-THU-P0702-P010
Chang-Min Shao Efficient Phosphorescent Organic Light-Emitting Diodes by Adopting Highly Transparent Electrodes
Chang-Min Shao;Ting-Ya Chiu;Thsung-Che Chiang;Chih-Hao Chang;Hsin-Hua Chang

A MoO3/Ag/MoO3 (MAM) transparent electrode was developed which aims for realizing transparent organic light-emitting diodes (TOLEDs). Thermal evaporation of the silver layer adopted varied rates to optimize the conductivity and transmittance. Blue, green and red TOLEDs with optimized MAM anode exhibited external quantum efficiencies of 12.0%, 12.0%, and 13.4%, respectively.

Paper No.  2017-THU-P0702-P011
Yi-Chen Lin Digital Pixel Memory Circuit Including a Scan-Controlling Inverter by Technology of A-Si TFT for Low Power Application
Po-Tsun Liu;Guang-Ting Zheng;Yi-Chen Lin

The proposed design presents a low power consumption pixel memory circuit by using amorphous silicon thin-film transistors (A-Si TFTs). This work could store the frame data and generate the corresponding inversion pixel signals by AC signal technique to refresh the static image without data driver.

Paper No.  2017-THU-P0702-P012
Zheng-Liang Huang Fabrication of lateral-cathode triode field emission device for lighting applications
Zheng-Liang Huang;Meng-Jey Youh;Ming-Chia Liu;Zhi-Ri Zhang;Yu-Che Li;Yuan-Yao Li

The study is to develop a lateral-cathode triode field emission device. In order to increase the lifetime of the devices, we used the pulse width modulation technique for the enhancement of the device performance. As a result, stable current density can be achieved using a lateral cathode structure.

Paper No.  2017-THU-P0702-P013
Chun-Hao Lai White Organic Light-Emitting Diodes by Using Molecules with Blue Aggregation-Induced Emission
Chun-Hao Lai;Yan-Teng Luo;Chi-Hao Chan;Chih-Hao Chang;Gintare Krucaite;Dmytro Volyniuk;Saulius Grigalevicius

Triphenylethene moiety decorated with different carbazole-based substitutions were synthesized, aiming to realize molecules harvesting blue aggregation-induced emission. 1,1,2- Triphenyl-2-[9-(2-ethylhexyl)carbazol-2-yl]ethylene (1) and 1,1,2-Triphenyl-2-[9-((3- methyloxetan-3-yl)methyl)carbazol-2-yl]ethylene (2) were selected as emitters in fabricating white organic light-emitting diodes (OLEDs). The maximum efficiencies of white OLEDs were recorded at 2.8%, demonstrating their high potential for EL applications.

Paper No.  2017-THU-P0702-P014
Su Yu Ci Study of Sol-gel-deposited ZnO Light Extraction Thin Films to Enhance the Efficiency in Organic Light-Emitting Diodes
Su Yu Ci

We fabricated organic light-emitting diodes with internal light extraction structure to reduce the Waveguide mode loss and increase the EQE by using the Sol-gel-deposited ZnO light extraction thin films. And successfully fabricated the organic light-emitting diodes on flexible plastic substrate.