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한국전기전자재료학회> 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)> 투명 디스플레이로써 활용 가능한 다수전극형 전자종이 필름 제안

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투명 디스플레이로써 활용 가능한 다수전극형 전자종이 필름 제안

Suggestion of Multi-Electrode Type Electronic Paper Film to Can be Used as a Transparent Display

이상일 ( Sang-il Lee ) , 홍연찬 ( Youn-chan Hong ) , 김영조 ( Young-cho Kim )
  • : 한국전기전자재료학회
  • : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권4호
  • : 연속간행물
  • : 2019년 07월
  • : 296-301(6pages)

DOI


목차

1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
감사의 글
REFERENCES

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초록 보기


						
A multiple-electrode-type electronic paper film can implement a single color and control the transparency, as it has multiple electrodes in one cell. Therefore, it can be used as a transparent display. In this paper, we explain the structure and driving method of a transparent electronic paper display, and then propose a control method of transmittance. Subsequently, we verify the theory by measuring the transmittance via experiment. Thus, by changing the manner of applying the voltage to three lower electrodes and one upper electrode, transmittance in eight cases could be realized. It was confirmed that the transmittance derived from the experiment could be controlled from a minimum of 6.75% to a maximum of 71.18%.

UCI(KEPA)

간행물정보

  • : 공학분야  > 전기공학
  • : KCI등재
  • :
  • : 격월
  • : 1226-7945
  • : 2288-3258
  • : 학술지
  • : 연속간행물
  • : 1988-2019
  • : 4402


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1전기철도 전차선로 지지애자의 염해지역 열화특성 사례 연구

저자 : 정호성 ( Hosung Jung ) , 박영 ( Young Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 263-266 (4 pages)

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In the Airport Railroad, the Yeongjong Bridge has a length of 4,420 m and connects Yeongjong Island with the mainland of Incheon City. The bridge is a two-level structure, consisting of a six-lane road at the upper level and a combination of a road and railroad at the lower level. The environmental conditions for the electric railway come mainly from the salt injury area and a heavy industry zone, and the maintenance cycles are determined differently depending on these conditions. This study analyzed the deterioration characteristics of long rod insulators produced with a movable ceramic bracket and polymer materials in the Yeongjong Bridge section of the Airport Railway operating in the salt injury area according to the material characteristics. Comparison of the corona measurements when the insulators were cleaned at the same time showed that the polymer insulator had a higher insulation performance than the ceramic insulator.

2Shingled PV 모듈 적용을 위한 Ag Paste 저감 전극 구조 설계

저자 : 오원제 ( Won Je Oh ) , 박지수 ( Ji Su Park ) , 이재형 ( Jae Hyeong Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 267-271 (5 pages)

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A shingled PV module is manufactured by dividing and bonding. In this method, the solar cell is divided by lasers and bonded using electrically conductive adhesives (ECAs). Consequently, the manufacturing cost increases because a process step is added. Therefore, we aim to reduce the production cost by reducing the amount of Ag paste used in the solar cell front. Various electrode structures were designed and simulated. The number of fingers was optimized by designing thinner fingers, and the number of fingers with the maximum power conversion efficiency was confirmed. The simulation confirmed the maximum efficiency in the 4-divided electrode pattern. The amount of Ag paste used for each electrode pattern was calculated and analyzed. The number of fingers was optimized by decreasing the width of the finger; this will not only reduce the amount of Ag paste required but also the increase the efficiency.

3비정질 산화물 SiZnSnO 반도체 박막의 전기적 특성 분석

저자 : 변재민 ( Jae Min Byun ) , 이상렬 ( Sang Yeol Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 272-275 (4 pages)

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We investigated the electrical characteristics of amorphous silicon-zinc-tin-oxide (a-SZTO) thin films deposited by RF-magnetron sputtering at room temperature depending on the deposition time. We fabricated a thin film transistor (TFT) with a bottom gate structure and various channel thicknesses. With increasing channel thickness, the threshold voltage shifted negatively from -0.44 V to -2.18 V, the on current (Ion) and field effect mobility (μFE) increased because of increasing carrier concentration. The a-SZTO film was fabricated and analyzed in terms of the contact resistance and channel resistance. In this study, the transmission line method (TLM) was adopted and investigated. With increasing channel thickness, the contact resistance and sheet resistance both decreased.

4ZnO-Zn2BiVO6-Co3O4-Cr2O3-CaCO3 바리스터 내의 결정결함과 입계특성

저자 : 홍연우 ( Youn-woo Hong ) , 하만진 ( Man-jin Ha )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 276-280 (5 pages)

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In this study, we investigated the crystal defects and grain boundary properties in a ZZCCC (ZnO-Zn2BiVO6-Co3O4-Cr2O3-CaCO3) varistor, with the liquid-phase sintering aid Zn2BiVO6 developed by our laboratory. The ZZCCC varistor sintered at 1,200℃ exhibited excellent nonlinear current-voltage characteristics (α=63), with oxygen vacancy (V0·; 0.35 eV) as a main defect, and an apparent activation energy of 1.1 eV with an electrically single grain boundary. Therefore, among the various additives to improve the electrical properties of ZnO varistors, if Zn2BiVO6 is used as a liquid phase sintering aid, it will be ideal to use Co for the oxygen vacancy and Ca for the electrically single grain boundary. This will allow the good properties of ZnO varistors to be maintained up to high sintering temperatures.

5수소화된 비정질 탄소 반사방지 코팅층이 염료감응형 태양전지의 효율에 미치는 영향

저자 : 송재실 ( Jae-sil Song ) , 김남훈 ( Nam-hoon Kim ) , 박용섭 ( Yong Seob Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 281-286 (6 pages)

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Raman spectra of a-C:H thin films deposited with an unbalanced magnetron sputtering system showed that the G peak shifted to a higher wavenumber as the target power density increased and ID/IG ratio increased from 0.902 to 1.012. Moreover, the transmittance of a-C:H films fabricated at 60 nm tended to decrease with increasing target power density; at 550 nm in the visible light region, the transmittance decreased from 69% to 58%. The rms surface roughness values of the a-C:H thin films decreased with increasing target power density, and varied from 1.11 nm to 0.71 nm. In order to achieve efficient light trapping, the light scattering at the rough interface must be enhanced. Consequently, the surface roughness of the thin film will decrease with the target power density. Further, the refractive index and reflectivity of the a-C:H thin films increased with increasing target power density; however, the Brewster angle decreased with the target power density. Hence, dye-sensitized solar cells using an a-C:H antireflective coating increased the CE, VOC, and JSC by approximately 8.6%, 5.5%, and 4.5%, respectively.

6SiO2/SiON 다층박막 적용 투명보안필름의 광특성 연구

저자 : 성형석 ( Hyeong Seok Sung ) , 권진구 ( Jin Gu Kwon ) , 채희일 ( Hee Il Chae ) , 한현성 ( Hyeon Seong Han ) , 이성의 ( Seong Eui Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 287-295 (9 pages)

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Privacy films are typically manufactured by combining black resin and transparent louver-shaped patterns. The use of black resin results in excellent light-shielding. However, black resin can reduce the transmittance of privacy films at the front viewing angle. In this study, we applied SiO2/SiON multi-layer thin films on a privacy film to maintain transmittance at the front viewing angle and improve light-shielding at the side viewing angle. We determined the optimum combination of thicknesses of the SiO2/SiON multi-layer stacks to increase the overall transmittance; the light shielding could be maximized at the side viewing angle.

7투명 디스플레이로써 활용 가능한 다수전극형 전자종이 필름 제안

저자 : 이상일 ( Sang-il Lee ) , 홍연찬 ( Youn-chan Hong ) , 김영조 ( Young-cho Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 296-301 (6 pages)

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(기관인증 필요)

초록보기

A multiple-electrode-type electronic paper film can implement a single color and control the transparency, as it has multiple electrodes in one cell. Therefore, it can be used as a transparent display. In this paper, we explain the structure and driving method of a transparent electronic paper display, and then propose a control method of transmittance. Subsequently, we verify the theory by measuring the transmittance via experiment. Thus, by changing the manner of applying the voltage to three lower electrodes and one upper electrode, transmittance in eight cases could be realized. It was confirmed that the transmittance derived from the experiment could be controlled from a minimum of 6.75% to a maximum of 71.18%.

8고유전율 Yttrium Oxide을 이용한 네마틱 액정 디스플레이의 고속 응답 전기-광학 특성

저자 : 정윤호 ( Yoon Ho Jung ) , 정해창 ( Hae-chang Jeong )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 302-306 (5 pages)

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We investigated a solution-derived Y2O3 film treated by ion beam (IB) irradiation as a liquid crystal (LC) alignment layer. With IB irradiation, homogeneous LC alignment was achieved irrespective of the annealing temperature. To verify the effect of IB irradiation, we conducted surface analyses such as X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). As Y2O3 is a high-k material, the electro-optical properties of the twisted nematic (TN) cells were superior to those of conventional TN cells based on a rubbed polymer, with an LC rising time of 4.1ms and falling time of 2.9ms. The IB-irradiated Y2O3 is a good alternative as an alignment layer for fast-switching TN LC displays.

9TEV 검출에 의한 가스 절연 개폐기의 절연 진단

저자 : 공정배 ( Jeong-bae Kong ) , 길경석 ( Gyung-suk Kil ) , 김성욱 ( Sung-wook Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 307-312 (6 pages)

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Transient earth voltage (TEV) signals propagate on metal surfaces when partial discharge (PD) occurs due to the deterioration of insulation performance in the operation of gas-insulated switchgears (GIS). A TEV sensor has advantages of high sensitivity and convenient installation for detecting PD defects. However, the TEV sensor depends on imports in domestic and detailed studies have not been conducted. In this study, a sensor was designed and fabricated by the TEV principle and its response characteristics were evaluated for detecting PD defects, which were simulated as protrusion on conductor (POC), protrusion on enclosure (POE), and free moving particle (FMP) defects. Finally, the PD-induced TEV signals were measured and phase-resolved partial discharge (PRPD) patterns were analyzed to identify the type of defect.

10디지털 역결상 보호 계전기의 설계 및 제작

저자 : 김우현 ( Woo-hyun Kim ) , 길경석 ( Gyung-suk Kil ) , 김성욱 ( Sung-wook Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 32권 4호 발행 연도 : 2019 페이지 : pp. 313-319 (7 pages)

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Induction motors connected with a three-phase AC system may malfunction due to reverse phase or open phase faults. Conventional overcurrent relays and overheating relays are used to prevent such accidents; however, their drawbacks include a low response speed and false operation. Therefore, in this study, a digital relay for the reverse-open phase was designed and fabricated. This relay can detect the reverse phase and open phase faults and send a trigger signal to the control circuit. The proposed relay was developed based on a microcontroller. The detection times of the reverse phase and open phase were verified as 320ms and 80ms, respectively. Compared with conventional relays that only protect the motor from one type of fault, the proposed relay can detect both, reverse phase and open phase faults. In addition, the fault detection, identification criterion, and trigger signal patterns can be modified by programming according to the requirements of users.

12
주제별 간행물
간행물명 수록권호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
32권 5호 ~ 32권 5호

KCI등재

센서학회지
28권 4호 ~ 28권 4호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
32권 4호 ~ 32권 4호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
32권 4호 ~ 32권 4호

KCI등재

센서학회지
28권 3호 ~ 28권 3호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
32권 3호 ~ 32권 3호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
32권 3호 ~ 32권 3호

KCI등재

센서학회지
28권 2호 ~ 28권 2호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
32권 2호 ~ 32권 2호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
32권 1호 ~ 32권 1호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
32권 2호 ~ 32권 2호

KCI등재

센서학회지
28권 1호 ~ 28권 1호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
32권 1호 ~ 32권 1호

KCI등재

센서학회지
27권 6호 ~ 27권 6호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
31권 6호 ~ 31권 6호

E²M-전기 전자와 첨단 소재(구 전기전자재료)
31권 5호 ~ 31권 5호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
31권 7호 ~ 31권 7호

KCI등재

센서학회지
27권 5호 ~ 27권 5호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
31권 6호 ~ 31권 6호

KCI등재

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
30권 11호 ~ 30권 11호
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