• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.483-486
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• 2004

A CCD-based color uniformity measurement system was set up. Through measuring the two-dimensional brightness distributions of three primary colors on the screen, chromaticity coordinate distributions of combination gray can be obtained within a few seconds. This system can be widely used in the production of LCD projection.

• 반도체디스플레이기술학회지
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• 제20권3호
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• pp.77-82
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• 2021

This numerical study focuses on the analysis of fume particle dispersion characteristics over the surface of target workpiece in laser micro-hole machining process. The effects of oblique stagnation flow over fume generating machining point are examined by carrying out a series of three-dimensional random particle simulations along with probabilistic particle generation model and particle drag correlation of low Reynolds number. Present computational model of fume particle dispersion is found to be capable of assessing and quantifying the fume particle contamination in precision hole machining which may influenced by different types of air flow patterns and their flow intensity. The particle size dependence on dispersion distance of fume particles from laser machining point is significant and the effects of increasing flow oblique angle are shown quite differently when slot blowing or slot suction flows are applied in micro-hole machining.

• 한국광학회:학술대회논문집
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• 한국광학회 2003년도 제14회 정기총회 및 03년 동계학술발표회
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• pp.236-237
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• 2003

3차원 영상표시를 위한 방법은 여러 가지 방향에서 연구되어 왔다. 이중 홀로그램을 이용한 방법은 완벽한 3차원 영상을 표현할 수 있지만 스페클 잡음이 나타나고 시야각이 제한되며 단색 간섭성 광원을 사용해야하는 등의 문제점이 있어 실제 응용에 제한을 받고 있다. 이에 따라 최근 들어 쌍안 방식을 포함한 3차원 입체영상의 구현을 위한 다양한 연구가 활발하게 수행되고 있다. 렌즈 어레이를 이용한 집적결상의 방법도 그 중의 하나로 완벽한 색상의 구현, 연속적 시야각 확보, 단순한 광학계에서 구현가능 등의 장점이 있어 응용 가능성이 매우 높은 방법 중 하나로 평가되고 있다. (중략)

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.517-519
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• 2007

We report our study on the implementation of Q tensor approach into three-dimensional finite element method (FEM) numerical solver. The comparative simulation results demonstrated the possibility of a different director configuration in between Q tensor method and vector method. The comparative study confirmed that Q Tensor implementation is more appropriate for OCB analysis than the vector method.

• Journal of Information Display
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• 제12권1호
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• pp.5-10
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• 2011

A novel architecture and proprietary electronic inks were developed to provide disruptive digital-media solutions based on an electrokinetic technology platform. The flexible reflective electronic media (eMedia) was fabricated by imprinting three-dimensional microscale structures with a roll-to-roll manufacturing platform. The HP technologies enable the required attributes for eMedia, such as low power, transparency, print-quality color, continuous levels of gray, and lowcost scalability. Pixelation was also demonstrated by integrating with the prototype oxide thin-film transistor backplane, and the system architecture was further developed by stacking primary-colorant layers for color reflective-display application. The innovations described in this paper are currently being developed further for the eSkins, eSignage, and ePaper applications.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 춘계학술대회
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• pp.62-65
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• 2022

NCS(Naval Combat System)는 함정에 설치된 이기종의 센서와 무기를 연동하여 표적탐지, 추적, 위협분석, 교전 및 명중평가에 이르기까지 함정의 전투효과를 극대화시키기 위한 시스템이다. 함정전투체계의 목적을 달성하기 위해서는 승조원들의 함정전투체계에 대한 운용 숙달이 요구된다. 이를 위해서 함정전투체계에서는 모의훈련 기능을 제공하며, 승조원들은 함상에서 체계 운용 숙달 및 팀워크 훈련을 수행한다. 훈련을 통제하는 훈련교관은 높은 수준의 훈련 통제 및 감시가 가능해야 하며 이에 대한 연구가 필요하다. 본 논문은 훈련교관의 훈련상황 가시화를 위한 3차원 전시 방안을 연구한다.

• 반도체디스플레이기술학회지
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• 제12권1호
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• pp.61-65
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• 2013

We investigated the wearable dynamics of diamond spherical abrasive during the substrate surface polishing under the pad compression via classical molecular dynamics modeling. We performed three-dimensional molecular dynamics simulations using the Morse potential functions for the copper substrate and the Tersoff potential function for the diamond abrasive. The pad hardness had a big impact on the wearable dynamics of the abrasive. The moving speed of the abrasive decreased with increasing hardness of the pad. As the hardness decreased, the abrasive was indented into the pad and then the sliding motion of the abrasive was increased. So the pad hardness was greatly influenced on the slide-to-roll ratio as well as the wearable rate.

• 한국광학회지
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• 제15권3호
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• pp.234-240
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• 2004

집적결상법으로 3차원 영상을 재생하는 경우 재생영상의 일부분이 중복 또는 누락되는 왜곡현상이 나타난다. 본 논문에서는 이러한 왜곡현상의 원인을 분석하고 정량적 해석을 시도하였다. 집적결상에서 사용 가능한 몇 가지 기본적인 변수들을 도입하여 왜곡을 정량화하고 최소화될 조건을 조사하였으며, 그 특성을 실험을 동해 확인하였다.

• 한국컴퓨터산업학회논문지
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• 제9권3호
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• pp.105-114
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• 2008

We present an eye tracking system using a low cost 3D CMOS imager for 3D displays that ensures a correct auto stereoscopic view of position- dependent stereoscopic 3D images. The tracker is capable of segmenting the foreground objects (viewer) from background objects using their relative distance from the camera. The tracker is a novel 3D CMOS Image Sensor based on Time of Flight (TOF) principle using innovating photon gating techniques. The basic feature incorporates real time depth imaging by capturing the shape of a light-pulse front as it is reflected from a three dimensional object. The basic architecture and main building blocks of a real time depth CMOS pixel are described. For this application, we use a stereoscopic type of display using parallax barrier elements that is described as well.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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• pp.598-600
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• 2002

To improve the luminance and efficiency of AC PDP, the effects of a square pulse applied to the address electrode during a sustain-period is investigated. Through this experiment, we confirmed the improvement of luminance and efficiency. We performed the temporal behavior measurement for the light emitted from AC PDP at floating state of the address electrode and at various auxiliary voltages (including ground state) applied to the address electrode using the scanned point detecting system. In the case of using an auxiliary voltage pulse, emission starts at the inner edges of the anode and cathode simultaneously. Also, we obtained the larger two discharge volumes compared with the normal sustain discharge where address electrode is floated.