• 대한인간공학회지
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• 제33권6호
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• pp.499-513
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• 2014

Objective: The objective of this study was to examine frame ratio of text information and font size in the circle smartwatch. Background: Recently, electronic manufacturers try to develop the original metaphor of traditional wrist watch (circle) in terms of smartwatch. They endeavor to break the square display in order to improve emotional customer satisfaction. Method: The experiments examined twenty level of text information design, combinations of four frame ratios (1:1, 4:3, 16:9, 21:9) and five font sizes (6pt, 7pt, 8pt, 9pt, 10pt). Nineteen participants volunteered for the experiment. Dependent variables were WPM (Words per Minute), reading preference, design preference and total preference. Furthermore, small circle display was made by using circle display data (1.3inch), which was exhibited in IFA (International Funkausstellung) 2014. Results: As a result, ANOVA (Analysis of Variance) revealed that WPM, and task time preference affect the specific frame ratio and font size. Results of ANOVA for reading preference, design preference, total preference were grouped by post-analysis LSD (Least Significant Difference). Among users, display ratio (16:9, 21:9), and font size (9pt) were preferred. In conclusion, 16:9 display ratio and 9pt are adaptable for text information in 1.3inch circle display. Conclusion: From the study, it is shown that 16:9 display ratio and 9pt size are more adaptable for text information in 1.3inch circle display than others. It is mainly due to the fact that the order of frame ratio and font size may affect the usability of reading long text information in a small circle display. Therefore, when developers design a circle display, the square frame ratio and font size are required to be considered according to circle size. Application: The 16:9 display ratio and 9pt font size may be utilized as a text information frame in the circle display design guideline for smartwatch.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.555-557
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• 2004

We report the effect of the particle size (D50) and PSD (Particle Size Distribution) of glass frit on the transparency of transparent dielectric layer of PDP. The milling efficiency of wet milling with water was the best among the dry milling, wet milling with IPA and wet milling with water. The transparency increased with the reduction of particle size of glass frit as the milling time increased. Also the transparency changed by the PSD of glass frit. Glass frits of broad PSD showed high transparency compared with the glass frits of sharp PSD.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.1247-1249
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• 2009

We have successfully developed the 22 inch WSXGA+ DLS(Data Line Sharing) Panel driving in 75 Hz. In the large size and high resolution panels, it is very difficult to design the DLS Panels without failure because of the very short charging time and the large signal delay. So, we first investigated the charging order to find the most adequate charging type to the large size and high resolution panels. And then, we optimized the design of DLS in terms of improving the charging properties using the technologies of the Delta-doping TFTs, Cu metal electrodes and optimization of panel design value and the circuit signal timing.

• 반도체디스플레이기술학회지
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• 제21권3호
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• pp.125-129
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• 2022

The current display technology tends to be highly integrated with high resolution, the element size is gradually downsized, and the structure becomes complicated. Inductively coupled plasma (ICP) dry etcher of various types of etching equipment is a structure that places a large multi-divisional antenna source on the top lid, passes current to the Antenna, and generates plasma using the induced magnetic field generated at this time. However, in the case of a device of a large area size, a support that can withstand a load structurally is necessary, and when these support portions are applied, arrangement of antenna becomes difficult, which causes reduction in uniformity. As described above, the development of antenna source of a large area having a uniform plasma density on the whole surface is difficult to restrict hardware (H/W). As a solution to this problem, we confirmed the change in uniformity of plasma by applying two kinds of specific shape faraday shield(FICP) to the lower part of the large area upper lid antenna of 6 and 8th more than that generation size. In this thesis, we verify the faraday shield effect which can improve plasma uniformity control of ICP dry etcher equipment applied to medium and large displays.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.255-256
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• 2007

A A4 size black and white reflective plastic display was developed for out door application. For document readability, high resolution of 180ppi plastic TFT backplane and high reflectance electrophoretic front panel sheet was used. Preparation of display was held near $100^{\circ}C$ process on PEN substrate.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.558-560
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• 2004

We report the effect of wet ball milling conditions on the transparency of glass frit. Generally, the particle size of glass frit decreased as the milling time increased. And the transparency of glass frit changed with the particle size variation. The transparency of glass frit A increased as the milling time increased. But, the transparency of glass frit B, containing high $B_2O_3$ decreased as the particle size decreased. It seems to be the result of chemical reaction with water and glass frit.

• 진공이야기
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• 제1권2호
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• pp.24-29
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• 2014

Display is a key component in electronic devices. OLED is growing very fast recently due to the explosion of the smart phone market although still LCD is the dominating display technology in the display market at the moment. Also needs for the large area and high resolution TVs and flexible displays are increasing these days. Especially flexible display is expected to be one of the key technologies in mobile devices requiring small device size and large display size. Contrary to the conventional displays, flexible display requires organic materials for the substrate, the active driving element and also for the display element. Plastic film as a substrate, organic semiconductor as an active component of the transistor and organic light emitting materials or electronic paper as a display element are studied actively. In this article, mainly backplane technologies such as substrates and the transistor materials for flexible display will be introduced.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.197-200
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• 2008

We propose a novel n-type a-Si:H TFT pixel circuit which is proper to AMOLED display for the large size and high resolution. Proposed pixel circuit will be suit to panel for the high resolution because of different threshold sampling method. Driving method of proposed pixel circuit is very simple like an AMLCD. Our simulation indicates that the proposed pixel circuit can compensate the Vth shift and IR rising of power line so that provide better quality image.

• 인지과학
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• 제25권3호
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• pp.211-232
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• 2014

사람들은 하루에도 수없이 어떤 물체나 사람을 찾는다. 이때 찾아야 하는 대상이 무엇인가 하는 정보 외에도 그 대상이 가지고 있는 지각적 정보도 시각탐색에 영향을 줄 수 있다. 본 연구에서는 안구운동추적기를 사용하여 탐색 목표를 알려주는 사전제시 자극의 크기 정보가 시각탐색과정에 영향을 주는지를 알아 보고자 하였다. 실험참가자는 화면가운데 제시된 특정 기호 자극(사전제시 자극)을 먼저 확인하고, 이후 화면 주변에 원형으로 제시된 8개의 자극들(탐색 디스플레이) 중 그 자극(목표자극)을 찾아 그 크기가 사전제시시와 동일한지 혹은 달라졌는지를 판단하는 과제를 실시하였다. 실험조건은 탐색 디스플레이가 모두 동일한 크기를 가진 항목들로 이루어졌는지 여부(동질적 디스플레이/이질적 디스플레이)와 목표자극의 사전제시시 크기(큼/작음)와 탐색시 크기(큼/작음)에 따라 8개의 피험자내 조건으로 구성되었다. 연구가설은 탐색 함목들이 다른 크기를 가진 이질적 디스플레이 조건에서 실험참가자는 사전제시 자극의 크기 정보와 일치하는 항목들을 먼저 살펴볼 전략을 사용할 것이라고 예측하였다. 실험결과, 과제수행 반응시간에서 탐색 디스플레이의 주효과, 목표자극의 탐색시 크기 주효과, 그리고 디스플레이 조건에 따라 다른 목표자극의 사전제시시와 탐색시 크기의 일치성 효과가 관찰되었다. 안구운동 측정치들을 분석한 결과, 그 첫 도약이 탐색 목표자극으로 향한 비율(Initial Saccade to Target Ratio)에서 반응시간과 유사하게 탐색 디스플레이 조건에 따라 목표자극의 크기 일치성 효과가 각각 달리 나타났다. 즉, 목표자극의 크기의 일치성 효과는 이질적 디스플레이 조건에서만 관찰되었는데, 이는 실험참가자들이 목표자극의 크기 정보를 바탕으로 탐색 항목들 중 사전 목표자극의 크기와 같은 항목들에게 먼저 주의를 기울였음을 나타낸다. 사후 분석 결과, 목표자극의 크기가 일관될 때는 이질적 디스플레이 조건의 안구움직임과 과제수행이 동질적 디스플레이 조건 보다 조금 더 빨랐으나, 목표 자극의 크기가 달라질 때는 오히려 더 느려졌음을 알 수 있었다.

• Educational Technology International
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• 제22권1호
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• pp.1-21
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• 2021

This study examined the effects of egocentric distance and screen size on learners' perceived virtual presence in a virtual reality environment with a large-screen display. Sixty-four undergraduate students participated in the study, which used a 3×2 randomized-block factorial design with repeated measures. Two independent variables were included: 1) egocentric distance, or the physical distance between the viewer's position and a screen display, and 2) screen size, or different screen heights with fixed width. Learners' perceived virtual presence, comprising involvement, spatial presence, and realness, was the dependent variable. Results showed that egocentric distance had significant effects on virtual presence, while screen size had none. A detailed discussion and implications are provided.