• The Optical Journal
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• s.146
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• pp.23-27
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• 2013

스마트폰으로 변화시키는 일상생활과 사회문화의 중심에 디스플레이가 있어, 스마트폰 업체는 시장에서 우위를 점하기 위한 가장 중요한 전략으로 디스플레이를 선택하고 있다. 스마트폰 제품을 구성하는 프로세서, 통신부품, 메모리, GPS 센서 등의 하드웨어와 운영체제 및 응용소프트웨어, 유저 인터페이스 등의 소프트웨어, MEMS, 터치, 음성, 동작 인식 등의 센서 기술이 급속히 발전함에 따라 인터넷 및 멀티미디어 기반에서 클라우드, Exchange 서버 등의 사용자 경험을 중요시하는 모바일 컴퓨터 기반으로 스마트폰의 기술 환경이 급속히 변화하고 있다. 이러한 스마트폰 기술 환경 변화에 대응하기 위한 가장 필수적인 요소는 스마트폰 디스플레이로, 대형화, 초고해상도화, 초슬림화되고 있는 디스플레이가 스마트폰 경쟁의 중심에 있다.

• Information and Communications Magazine
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• v.29 no.4
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• pp.30-36
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• 2012

스마트폰에서 시각 정보를 전달하는 디스플레이 장치의 화질은 스마트폰의 경쟁력을 결정하는 중요 요소 중 하나이다. 스마트폰 디스플레이는 점차 대형화되고 있으며 디스플레이의 화질을 개선하려는 하드웨어 및 소프트웨어 기술 개발이 활발히 이루어지고 있다. 그런데 대형화된 디스플레이는 스마트폰 전력 소비의 많은 부분을 차지하기에 화질 개선뿐 아니라 디스플레이의 소비전력량을 줄이는 것도 반드시 필요하다. 대표적인 스마트폰의 디스플레이로는 LCD와 OLED가 있다. 각각의 디스플레이 패널은 서로 상이한 물리적 특성을 갖고 있으므로, 이러한 특성을 잘 활용하여 전력 소비량을 줄이면서 화질을 향상시키는 영상 처리 기술이 개발되고 있다. 본고에서는 LCD와 OLED 디스플레이를 위한 저전력 화질 개선에 대한 기술 동향을 알아본다.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.559-567
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• 2022

The effect of smartphone usage motivation on application display advertising attitude and advertising avoidance was investigated. In addition, the mediating effect of advertising intrusion was confirmed. The total number of participants in the study was 309, and the data collection method used a survey method. Covariate structural analysis was conducted to investigate the causal relationship between smartphone usage motivation and advertising attitude and the mediating effect of perceived intrusion on advertising avoidance. There are five results. First, the motivation for using smartphones had a significant effect on the display advertising attitude of smartphone applications. Second, the display advertising attitude of the smartphone application had a significant effect on the advertising avoidance behavior. Third, the display advertising attitude of smart phone application had a significant effect on perceived advertising intrusion. Fourth, the perception of intrusiveness of display advertising in smartphone applications had a significant effect on advertising avoidance behavior. Finally, it was confirmed that the perceived ad intrusion has a partial mediating effect in the causal relationship of the smartphone application display advertising attitude to the ad avoidance behavior. The results of this study will contribute to suggesting strategies to reduce advertising avoidance behavior.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.37-46
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• 2015

Nowadays, given the popularity of wearable devices, The smartwatch is considered as the leading product category and taking the main share of wearable device market. So far smartwatch is only used as an accessorial device of smart phones due to its screen size. The objective of this study is to review literatures and find solutions to overcome the screen limitations. In the literature review, several methods are introduced including using other devices as output devices, other object as screens by projecting technologies, and enlarging screen size by flexible display. Based on that, possible solutions including seamless display and user-centered interaction methods were investigated. Future research directions were also introduced at the end of this study.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.3
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• pp.522-532
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• 2012

Smartphones and smartpads have a lot of advantages such as high convenience and portability. Also, they can effectively manage enormous amounts of information based on their high performance and plentiful applications. As such devices have been frequently used, many users manage various types of information using the devices. Recently, during conferences or seminars, smart device users often try to utilize stored resources on their devices and present them visually. Unfortunately, since smart devices have small displays, there is an essential difficulty in visual sharing of information. In this paper, we propose a method which integrates screens of several android smart devices and supports sharing of the integrated screen through a large display, presenting a screen sharing system for android smart devices. The developed system integrates display screens of several smart devices into a screen and shows the integrated screen through a large display connected to a desktop computer. In addition, to support the effective sharing of screens, the system provides functions for adjusting the number and the size of screens on a large display. The functions are controlled on a smart device and/or a desktop computer.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.3
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• pp.471-477
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• 2021

In the field of display, a smart factory means more efficient display manufacturing using AI/BIG DATA technology not only for job automation, but also for existing process management, moving facilities, process abnormalities, and defect classification. In the past, when defects appeared in the display manufacturing process, the classification of defects and coping with process abnormalities were different, a lot of time was consumed for this. However, in the field of display manufacturing, advanced process equipment must be used, and it can be said that the competitiveness of the display manufacturing industry is to quickly identify the cause of defects and increase the yield. In this paper, we will summarize the cases in which smart factory AI/BIG DATA technology is applied to domestic display manufacturing, and analyze what advantages can be derived compared to existing methods. This information can be used as prior knowledge for improved smart factory development in the field of display manufacturing using AI/BIG DATA.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.73-74
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• 2013

터치 디스플레이 기술이 발달함에 따라 이를 이용한 스마트 폰을 비롯한 스마트 테이블, 스마트 월 등 다양한 HW 플랫폼들이 대두되고 있다. 특히, 터치 디스플레이의 대형화가 가능해짐에 따라 이를 기반으로 다양한 서비스가 제공될 것으로 예상된다. 이를 이용하는 서비스들은 멀티 터치를 기반으로 한명 이상의 사용자 입력을 필요로 할 수 있다. 이에 따라 터치 디스플레이의 주요 입력 도구인 가상 키보드 역시 마찬가지의 요구사항이 있다. 본 논문에서는 리눅스 환경에서 차세대 윈도우즈 매니저(Wayland/Weston)을 기반으로 가상 키보드 등록, 생성 및 사용 과정에 대해 분석하고, 멀티 가상 키보드를 지원하는 윈도우 매니저를 설계 및 구현한다.

• Information Display
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• v.20 no.2
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• pp.3-9
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• 2019

• Journal of Industrial Convergence
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• v.22 no.2
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• pp.63-71
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• 2024

Conventional methods like PIN used in conventional smartphone form factor have not considered the variation in display structure or screen size. As a result, when applied to recent variable display-based smartphones, the secret information input unit may get reduced or enlarged, leading to vulnerabilities for social engineering attacks due to deformation of the display area. This study proposes a secure keypad that responds to changes in display size in rollable and bendable smart phones. Firstly, the security problems that may arise when applying classical authentication methods to new form factors were analyzed, and corresponding security requirements were derived. The proposed security keypad addresses the key input error problem that can occur when the screen size is small. The arrangement and size of keys can be deformed with the spacing suitable for input depending on the display size of rollable and bendable smartphones. The study also considered the problem of leaking input information for social engineering attacks by irregularly distributing key input coordinates. The proposed method provides better user experience and security than existing methods and can be used in smartphones of various sizes and shapes.

• Design Convergence Study
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• v.15 no.3
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• pp.151-169
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• 2016

This study intends to present the most optimal interaction in association with available functions if the foldable display is applied to smart devices. For this, I have looked into the flow of development, morphological features and the application areas of the foldable display based on review literature. I have also established five principles of interaction applicable to the foldable display through the study on the concept and characteristics of foldable display interactions and previous research cases. Next, I have conducted user surveys to find the most optimal interactions with the functions of smart devices taken into account. Prior to user surveys, I have classified foldable display interactions into 36 categories based on the five interaction principles of the foldable display. In addition, I have selected 17 major functions of regular smart devices based on relevant documents. Lastly, utilizing concrete interaction methods and functions obtained in this manner, I have conducted user surveys based on the relationship among multiple relevant factors and chosen the interaction method that acquired the highest frequency and score as the most optimal one whose detailed description has been provided as well.