Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437406
T. Komoda, Hisahiro Sasabe, J. Kido
Here, we would like to introduce the current status of (i) our materials technology for phosphorescent and thermally activated delayed fluorescence (TADF) OLEDs, namely, 2nd and 3rd generation OLEDs, (ii) low-power-consumption OLED technology, and (iii) long lifetime TADF OLED technology at high brightness. We believe that these three technologies should promise the bright future of 3rd generation OLEDs for display and general lighting.
{"title":"Current Status of OLED Material and Process Technologies for Display and Lighting","authors":"T. Komoda, Hisahiro Sasabe, J. Kido","doi":"10.23919/AM-FPD.2018.8437406","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437406","url":null,"abstract":"Here, we would like to introduce the current status of (i) our materials technology for phosphorescent and thermally activated delayed fluorescence (TADF) OLEDs, namely, 2nd and 3rd generation OLEDs, (ii) low-power-consumption OLED technology, and (iii) long lifetime TADF OLED technology at high brightness. We believe that these three technologies should promise the bright future of 3rd generation OLEDs for display and general lighting.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114749091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/am-fpd.2018.8437397
M. Miyakawa, M. Nakata, H. Tsuji, Y. Fujisaki
Simple and facile solution-processed oxide thin-film transistors (TFTs) using metal-oxide semiconductors are very promising for producing large-area electronics at a relatively low cost. This study aims to design and fabricate high-performance solution-processed TFTs using fluorine-doped aqueous metal oxides at a low temperature of 300°C. We investigated the effect of a simple method of doping the IGZO and IZO used for the active-channel layer with fluorine additives on the performance of the fabricated TFT. In addition, the hydrogen injection and oxidation method, which is considered effective for film densification, was tested and found to improve the electrical performance of the TFT. This simple, low-temperature fabrication technique will be useful for manufacturing large-area TFTs.
{"title":"High-performance solution-processed thin-film transistors using fluorine-doped aqueous metal oxides","authors":"M. Miyakawa, M. Nakata, H. Tsuji, Y. Fujisaki","doi":"10.23919/am-fpd.2018.8437397","DOIUrl":"https://doi.org/10.23919/am-fpd.2018.8437397","url":null,"abstract":"Simple and facile solution-processed oxide thin-film transistors (TFTs) using metal-oxide semiconductors are very promising for producing large-area electronics at a relatively low cost. This study aims to design and fabricate high-performance solution-processed TFTs using fluorine-doped aqueous metal oxides at a low temperature of 300°C. We investigated the effect of a simple method of doping the IGZO and IZO used for the active-channel layer with fluorine additives on the performance of the fabricated TFT. In addition, the hydrogen injection and oxidation method, which is considered effective for film densification, was tested and found to improve the electrical performance of the TFT. This simple, low-temperature fabrication technique will be useful for manufacturing large-area TFTs.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121622309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437418
Youngmin Kim, Jisoo Hong, Sunghee Hong, Choonsung Shin, Sanghuyn Joo, J. Byun, Hoonjong Kang
We introduce a synchronization scheme of multiple displays with high-definition for real-time interaction. The system could provide 720p 3D resolution with help of plural projection units, and the images among the projection units should be synchronized for real-time interaction.
{"title":"Synchronization scheme of plural displays for real-time interaction","authors":"Youngmin Kim, Jisoo Hong, Sunghee Hong, Choonsung Shin, Sanghuyn Joo, J. Byun, Hoonjong Kang","doi":"10.23919/AM-FPD.2018.8437418","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437418","url":null,"abstract":"We introduce a synchronization scheme of multiple displays with high-definition for real-time interaction. The system could provide 720p 3D resolution with help of plural projection units, and the images among the projection units should be synchronized for real-time interaction.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125127257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437379
Mitsuo Adachi
LCDs are now widely used for Center Information Displays (CID) and instrument clusters in vehicles. With increasing maturity level of autonomous driving and electric vehicles spreading into the market, displays in the vehicle are expected to play more important roles. For an example, the “driver” may want to be relaxed during autonomous driving and one display can be used as an infotainment display as well as an indicator. This leaf describes such future chances and challenges for automotive displays.
{"title":"Chances and Challenges for Automotive Displays","authors":"Mitsuo Adachi","doi":"10.23919/AM-FPD.2018.8437379","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437379","url":null,"abstract":"LCDs are now widely used for Center Information Displays (CID) and instrument clusters in vehicles. With increasing maturity level of autonomous driving and electric vehicles spreading into the market, displays in the vehicle are expected to play more important roles. For an example, the “driver” may want to be relaxed during autonomous driving and one display can be used as an infotainment display as well as an indicator. This leaf describes such future chances and challenges for automotive displays.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116839979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437412
H. Usui
Organic thin films were deposited on the surface of inorganic substrates that were modified with self-assembled monolayers (SAMs) having reactive terminal units. The SAMs fill a role of polymerization initiator as well as anchoring points that tether the polymer chains to the inorganic surface. The covalent tethering was effective to improve not only the adhesion strength but also the surface morphology and charge injection characteristics of the organic thin films.
{"title":"Controlling Organic/Inorganic Junctions by Covalent Tethering at the Interface","authors":"H. Usui","doi":"10.23919/AM-FPD.2018.8437412","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437412","url":null,"abstract":"Organic thin films were deposited on the surface of inorganic substrates that were modified with self-assembled monolayers (SAMs) having reactive terminal units. The SAMs fill a role of polymerization initiator as well as anchoring points that tether the polymer chains to the inorganic surface. The covalent tethering was effective to improve not only the adhesion strength but also the surface morphology and charge injection characteristics of the organic thin films.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117187827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437414
H. Kajii, Mahiro Kawata, Hiyuto Okui, M. Morifuji, M. Kondow
The fabrication of inorganic/organic hybrid distributed Bragg reflector (DBR) is investigated to realize all-solution processed polymer light-emitting diodes (PLED s) with the narrowing of electroluminescence (EL) spectra. The large refractive index contrast between inorganic copper(l) thiocyanate, CuSCN and polymer, cellulose acetate results in the fabrication of DBR with high reflectivity (> 95 %) from nanostructures consisting of only five bilayers. The narrowing of EL spectrum with a full width at half maximum of approximately 25 nm is achieved from all-solution-processed PLED based on highly conductive poly(ethylenedioxythiophene):poly(styrenesulfonate) anode and super yellow as an emissive layer except for a silver cathode.
{"title":"Fabrication of inorganic/organic hybrid distributed Bragg reflectors based on inorganic CuSCN for all-solution-processed polymer light-emitting diodose","authors":"H. Kajii, Mahiro Kawata, Hiyuto Okui, M. Morifuji, M. Kondow","doi":"10.23919/AM-FPD.2018.8437414","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437414","url":null,"abstract":"The fabrication of inorganic/organic hybrid distributed Bragg reflector (DBR) is investigated to realize all-solution processed polymer light-emitting diodes (PLED s) with the narrowing of electroluminescence (EL) spectra. The large refractive index contrast between inorganic copper(l) thiocyanate, CuSCN and polymer, cellulose acetate results in the fabrication of DBR with high reflectivity (> 95 %) from nanostructures consisting of only five bilayers. The narrowing of EL spectrum with a full width at half maximum of approximately 25 nm is achieved from all-solution-processed PLED based on highly conductive poly(ethylenedioxythiophene):poly(styrenesulfonate) anode and super yellow as an emissive layer except for a silver cathode.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124095262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437422
Bo-Ruei Chiou, Zu-Po Yang, Monima Sarma, Hai‐Ching Su, Ken‐Tsung Wong
White light-emitting electrochemical cells (LECs) have drawn great attention due to advantages such as low-voltage operation, compatibility with solution processes and employing inert cathode metals. Since different correlated color temperatures (CCTs) of background illumination are necessary for lighting applications, real-time CCT-tunable white LECs would be desired in modem smart lighting systems. In this work, a widely and dynamically tuning CCT (> 10000 K) of white LEC is demonstrated by employing an electrochromic device (ECD) as a real-time controllable color filter. By adjusting the applied bias on the ECD to attenuate different amount of red emission of white EL, real-time and wide-range CCT tunability can be achieved. Such white light sources are suitable for most lighting applications and modem smart lighting systems.
{"title":"Adjusting Correlated Color Temperature from White Light-Emitting Electrochemical Cells by Employing Electrochromic Filters","authors":"Bo-Ruei Chiou, Zu-Po Yang, Monima Sarma, Hai‐Ching Su, Ken‐Tsung Wong","doi":"10.23919/AM-FPD.2018.8437422","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437422","url":null,"abstract":"White light-emitting electrochemical cells (LECs) have drawn great attention due to advantages such as low-voltage operation, compatibility with solution processes and employing inert cathode metals. Since different correlated color temperatures (CCTs) of background illumination are necessary for lighting applications, real-time CCT-tunable white LECs would be desired in modem smart lighting systems. In this work, a widely and dynamically tuning CCT (> 10000 K) of white LEC is demonstrated by employing an electrochromic device (ECD) as a real-time controllable color filter. By adjusting the applied bias on the ECD to attenuate different amount of red emission of white EL, real-time and wide-range CCT tunability can be achieved. Such white light sources are suitable for most lighting applications and modem smart lighting systems.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125785793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/am-fpd.2018.8437424
{"title":"AM-FPD '18 Committee","authors":"","doi":"10.23919/am-fpd.2018.8437424","DOIUrl":"https://doi.org/10.23919/am-fpd.2018.8437424","url":null,"abstract":"","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128635410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437420
Ha-My Hoang, T. Hori, T. Yasuda, Takio Kizu, K. Tsukagoshi, T. Nabatame, B. Trinh, A. Fujiwara
In this work, we have explored optimum fabrication condition by a solution processing method for 3 at.% Si-doped indium oxide thin-film transistors (TFTs). In-Si-O (ISO) thin films were investigated by X-ray reflectivity (XRR) and X-ray diffraction (XRD) techniques, and the operation of TFTs was characterized by a conventional three-probe method. XRR results suggested that as the annealing temperature increased, the film thickness decreased. In addition, according to XRD measurement, the ISO film started crystalline from 850°C regardless the film thickness. The best ISO TFT showed the value of VT of-5 V, µ of1.32 cm2/Vs, SS of1 V/dec, and on/off current ratio about 107.
{"title":"Investigation on solution-processed In-Si-O thin-film transistor via spin-coating method","authors":"Ha-My Hoang, T. Hori, T. Yasuda, Takio Kizu, K. Tsukagoshi, T. Nabatame, B. Trinh, A. Fujiwara","doi":"10.23919/AM-FPD.2018.8437420","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437420","url":null,"abstract":"In this work, we have explored optimum fabrication condition by a solution processing method for 3 at.% Si-doped indium oxide thin-film transistors (TFTs). In-Si-O (ISO) thin films were investigated by X-ray reflectivity (XRR) and X-ray diffraction (XRD) techniques, and the operation of TFTs was characterized by a conventional three-probe method. XRR results suggested that as the annealing temperature increased, the film thickness decreased. In addition, according to XRD measurement, the ISO film started crystalline from 850°C regardless the film thickness. The best ISO TFT showed the value of VT of-5 V, µ of1.32 cm2/Vs, SS of1 V/dec, and on/off current ratio about 107.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130713815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.23919/AM-FPD.2018.8437392
S. Iwamatsu, K. Takechi, H. Tanabe, Yoshiyuki Watanabe
For the purpose of improving reliability of our high-sensitivity pH sensor based on the top-gate effect in amorphous indium-gallium-zinc oxide thin-film transistor (a-InGaZnO TFT), we propose extended-gate a-InGaZnO TFT pH sensor having an ALD-AlOx/sputtered-TaOx layered top-gate insulator and a Ti extended-gate electrode. Unlike our previous insulated-gate a-InGaZnO TFT pH sensor, we do not need to immerse the TFT sensor device into the solution, and thus we could expect improvement of its reliability. We discuss our primary results for the extended-gate a-InGaZnO TFT pH sensor, including its pH sensitivity and response to a pH change of 0.05.
{"title":"Demonstration of extended-gate structure for pH sensors based on amorphous indium-gallium-zinc oxide thin-film transistors","authors":"S. Iwamatsu, K. Takechi, H. Tanabe, Yoshiyuki Watanabe","doi":"10.23919/AM-FPD.2018.8437392","DOIUrl":"https://doi.org/10.23919/AM-FPD.2018.8437392","url":null,"abstract":"For the purpose of improving reliability of our high-sensitivity pH sensor based on the top-gate effect in amorphous indium-gallium-zinc oxide thin-film transistor (a-InGaZnO TFT), we propose extended-gate a-InGaZnO TFT pH sensor having an ALD-AlOx/sputtered-TaOx layered top-gate insulator and a Ti extended-gate electrode. Unlike our previous insulated-gate a-InGaZnO TFT pH sensor, we do not need to immerse the TFT sensor device into the solution, and thus we could expect improvement of its reliability. We discuss our primary results for the extended-gate a-InGaZnO TFT pH sensor, including its pH sensitivity and response to a pH change of 0.05.","PeriodicalId":221271,"journal":{"name":"2018 25th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123114236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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