• 한국전기전자재료학회논문지
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• 제18권11호
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• pp.1019-1023
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• 2005

We have examined the electrical and optical characteristics of the plasma display panel produced by vacuum in-line sealing technology. In the MgO layer deposited at room temperature, after sealing at the panel temperature of $430^{\circ}C$, the luminous efficiency decreased compared with that of the panel before sealing. Moreover, firing and sustain voltage of the sealed panel increased compared with that of the panel before sealing. This was resulted from that the MgO protective layer was cracked by the softening of the dielectric layer during the sealing process. In order to avoid the MgO crack during the vacuum in-line sealing, thermally stable MgO layer or lower temperature sealing is required.

• 한국전기전자재료학회논문지
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• 제28권1호
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• pp.21-27
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• 2015

We propose a fabrication process of a 3-electrode type reflective display and ascertain the realized color panel. The first design is proceeded with basis on Ti electrode for fast panel fabrication, easy align process, and high reflection of a white image. To observe the particle movement at the lower electrodes and optimize the space between electrodes, we design the second patterns, from which we establish a fabrication process with the mixing of electronic ink, loading of this ink, electronic ink assembly, driving, and packaging. After aging process, we ascertain a normally driving panel with black, white, and blue color.

• 반도체디스플레이기술학회지
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• 제16권1호
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• pp.102-105
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• 2017

Currently, the size of the electronic device is in the nano area. In order to control the movements of these nanoscale devices, one should be able to understand the physical phenomena in the nano area. Recently, due to carbon nanotubes and mechanical outstanding electrical conductivity and mechanical characteristics of the carbon nanotubes and Graphene behaves to apply. Efforts have been active. There are various tubes with a radius of a in a compact mass in the form of a Multi walled carbon nanotubes in different between the radius. Van der Waals force can move smoothly without friction with each other by the nanoscale motor turning, using the properties, making. This is the lightest solids per unit area on the thickness is electrical atomic layer one of the substance and the electrical conductivity, the best material and mechanical characteristics are very much. Many studies because great is the ideal nanoelectromechanical device of material is being considered. In this study, electrical resonator for a new structure proposed and the nature and methodology would like to come up.

• 한국전기전자재료학회논문지
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• 제22권1호
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• pp.86-92
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• 2009

We fabricated the charged particle type display using opposite-charged two toner particles. The particles were composed of polymer, colorant($TiO_2$, carbon black) and external additives(nano-sized silica and so on). In fabrication process we controlled the putting layers of this toner particles on the inner panel. To get the effect of number of layers ($1{\sim}3$), we measured the threshold, driving and breakdown voltages, reflectivity, viewing angle, and color characteristics using RT-300 anisotropic scattering system. We ascertained that these voltages are increased with increasing of layers of particles. Cell gap between electrodes must be enlarged with increment of layers and the size of particles. The lumping phenomena of particles at near of the rib observed by optical system with same CIE values.

• Transactions on Electrical and Electronic Materials
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• 제9권2호
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• pp.57-61
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• 2008

The $(Y,Gd)_2O_3$:Eu phosphors were synthesized using the impregnation method in order to improve the performance of red-emitting phosphors for plasma display panels. $(Y,Gd)_2O_3$:Eu phosphors, with a particle size ranging from 150 and 200 nm, exhibited a strong red emission at around 615 nm. The emission intensity and particle size of the powders were controlled by adjusting the sintering temperature and raw material composition. The resulting particle size was very uniform and photoluminescence (PL) characteristic was excellent, being about twice that of commercial red phosphor.

• 한국전기전자재료학회논문지
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• 제31권7호
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• pp.486-489
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• 2018

Solution-processed organic light-emitting diodes (OLEDs) have the advantages of low cost, fast fabrication, and large-area devices. However, most studies on solution-processed OLEDs have mainly focused on solution-processable hole transporting materials or emissive materials. Here, we report fully solution-processed green OLEDs including hole/electron transport layers and emissive layers. The electrical and optical properties of OLEDs based on solution-processed TPBi (2,2',2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)) as the electron transport layer were investigated with respect to the spin speed and the number of layers. The performance of OLEDs with solution-processed TPBi exhibits a power efficiency of 9.4 lm/W. We believe that the solution-processed electron transport layers can contribute to the development of efficient fully solution-processed multilayered OLEDs.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.449-452
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• 2009

Ink-jet printed (IJP) self-aligned (SA) organic light emitting diodes (OLEDs) and its application to light emitting seal have investigated. Ink-jet printing of light emitting material is carried out onto transparent anode covered with insulating material. Laminated light emitting seal with SA IJP OLED without photo - lithographic process and any vacuum process, noncontact type electromagnetic power supply without electric power supply line, and light emitting tag with network type RF communication terminal by controlling display information were demonstrated.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.593-596
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• 2007

A possibility of manufacturing bendable ac-PDP using aluminum electrode with anodic aluminum oxide dielectric material system on PET film substrate was explored. For this structure, PET film with fence-structured aluminum electrodes was used for front plate and PET film with barrier ribs of UV curable resin for the rear plate. The results demonstrate that it is feasible to manufacture the bendable ac-PDPs using those material system and are expected to expand the applications of plasma display panels.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1999년도 춘계학술대회 논문집
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• pp.103-106
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• 1999

In this paper, we suggest the FED packaging technology that have 4mm thickness, using sodalime glass-to-sodalime glass electrostatic bonding. It based on conventional silicon-glass bonding. The silicon film was deposited an around the exhausting hole on FED backside panel. And then, the silicon film of panel was successfully bonded with capping(bare) glass in vacuum environment and the FED panel was vacuum-sealed. In this method, we could achieve more 153 times increased conductance and 200 times increased vacuum efficiency than conventional tube packaging method. The vacuum level in panel, by SRG test, was maintained about low 10$_{-4}$ Torr during above two months And, the light emission was observed to 0.7-inch tubeless packaged FED. Then anode current was 34 $\mu$ A. Emission stability was constantly measured for 10 days.

• 반도체디스플레이기술학회지
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• 제10권2호
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• pp.57-63
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• 2011

Photovoltaic effect is confirmed in DSSC fabricated under the common conditions. In upper electrodes, validity of ZnO as new TCO material was investigated and an improvement of characteristics in DSSC was tried by control of process conditions at semiconductive powder layer. ZnO thin film showed very high resistivity, therefore efficiency of solar cell was lower than that of conventional ITO-related material. DSSC characteristics was able to improve by thin blocking layer doposited between the TCO and semiconductor layer.