• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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• pp.153-154
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• 2000

Large size poly-Si TFT-LCDs have been fabricated using p-channel thin film transistors for notebook PC application. We have designed and implemented the data sampling circuit and gate drivers that operate with low power consumption and high reliability. The gate driver has a redundant structure. We have realized the uniform and excellent display quality comparable to that of CMOS module. The reliability of panel is investigated and discussed by measuring the bias stability of transistors.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.285-288
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• 2005

A 2.8 inch fully integrated SOP employing a high performance LTPS CMOS TFT technology has been developed for mobile display applications. The LCD module is directly interfaced with 3V 6-bit RGB source via timing control circuitry. The integrated data driver comprises a 6-bit hybrid type DAC with low power analog buffer.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2005년도 전력전자학술대회 논문집
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• pp.93-95
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• 2005

A new energy-recovery- sustain circuit suitable for a Plasma Display Panel(PDP) application is proposed. The proposed circuit features the low device voltage stresses, essential to design a power efficient and low cost PDP driver circuit. The proposed circuit is demonstrated experimentally for driving a 42 inches plasma display panel.

• 반도체디스플레이기술학회지
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• 제4권2호
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• pp.21-24
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• 2005

Ink-jetting characteristics of pulse width and pulse amplitude for a piezoelectric ink jet printer driver have been mapped with various polymer EL ink. In this study, the jetting characteristics have been classified into 4 regime; no Jetting, unstable jetting, stable jetting, and spraying, and the importance of fluid viscosity on the scope of the stable jetting regime has been emphasized. The relation between jetting speed and the width and amplitude of driving signal has also been investigated and the effect of the speed on the jetting characteristics has been discussed.

• 전력전자학회논문지
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• 제19권4호
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• pp.349-356
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• 2014

As the turns ratio of the tapped-inductor contributes to the step-up ratio, the tapped-inductor boost (TIB) converter has significantly increased level of difficulties in its analysis and design compared to the conventional boost converter where the duty ratio is the sole factor affecting the step-up ratio. In this paper, the operation of the continuous current mode TIB converter is briefly reviewed, the characteristics are analyzed in detail, and a design guideline optimizing the loss in the tapped-inductor is presented with a practical design example. Finally, experimental results from a 12V/120V prototype for 0.25A LED driver application are also presented to confirm the design.

• 반도체디스플레이기술학회지
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• 제20권2호
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• pp.56-60
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• 2021

Recently, technologies for internet of things have been rapidly advanced with development of network. Also interest in smart healthcare that informs about motion information of users has been growing. In this paper, a system that is monitoring the weight on both feet by using aduino and FSR(Force Sensitive Resistor) Sensor is implemented. A 4-channel sensor driver module was implemented to measure a more accurate weight value. It is monitoring the weight on both feet by the using an application for either your PC or mobile device. Mobile applications can contribute to reducing human damage by sending messages along with location in emergency situations, such as injuries caused by falls during outdoor activities.

• 반도체디스플레이기술학회지
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• 제22권3호
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• pp.161-165
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• 2023

One of the difficult works in an autonomous driving system is detecting road lanes or objects in the road boundaries. Detecting and tracking a vehicle is able to play an important role on providing important information in the framework of advanced driver assistance systems such as identifying road traffic conditions and crime situations. This paper proposes a vehicle detection scheme based on deep learning to classify and tracking vehicles in a complex and diverse environment. We use the modified YOLO as the object detector and polynomial regression as object tracker in the driving video. With the experimental results, using YOLO model as deep learning model, it is possible to quickly and accurately perform robust vehicle tracking in various environments, compared to the traditional method.

• 디자인융복합연구
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• 제17권4호
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• pp.17-29
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• 2018

완전 자율주행 단계에 이르기 전까지 부분 자율주행 차량에서는 시스템이 특정 상황에서 운전자에게 직접 운전을 하도록 요청하는 제어권 전환 요청(TOR)이 필수적이다. 이 연구의 목적은 인간-자동차 인터랙션 방식 중 HDD(Head-Down Display)보다 HUD(Head-Up Display)가 제어권 전환 요청 시 사용자 경험 인식에서 더 유리한지 비교하는 것이다. 운전 시뮬레이터 실험을 통해 참가자가 자율주행 상황에서 부가적 과업인 게임을 하다가 제어권 전환 요청을 인지하면 직접 운전을 수행하도록 하였다. 실험 결과, 반응시간과 주관적 작업 부하에서는 차이가 없었으나, '사용 용이성'과 '만족도'에서 HUD 방식이 HDD보다 더 우수한 것으로 나타났다. 자율 주행시 HUD를 통해 부가적 과업을 하도록 디자인하는 것이 제어권 전환 요청 기능의 사용자 경험을 개선하는 효과가 있었다. 이 연구는 자율주행 맥락에서의 사용자 경험 디자인 가이드라인 설정을 위한 실증 사례를 제시했다는 점에서 의의가 있다.

• ETRI Journal
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• 제38권4호
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• pp.757-766
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• 2016

This study was conducted to examine the usage effects of an augmented reality head-up display (AR-HUD) system on the risk perception and psychological changes of drivers. To do so, we conducted an experiment to collect the driver response times for vehicles and pedestrians as their risk perception behavior, and used a driving behavior determinants questionnaire consisting of Problem Evading, Benefits/Sensation Seeking, Anti-Personal Anxiety, Anti-Personal Angry, and Aggression factors for collecting the psychological characteristics of the drivers. Thirty drivers were randomly assigned into an in-vehicle AR-HUD using group and a control group. As a result, the Anti-Personal Anxiety and Anti-Personal Angry factors were negatively correlated with the response time for the control group. In contrast, these results were not shown for the in-vehicle AR-HUD system using group. These results indicate that the in-vehicle AR-HUD system may partially induce a relaxation of tension or stress for drivers with a high level of interpersonal anxiety. Therefore, the in-vehicle AR-HUD system might contribute to not only the visual safety driving behaviors of drivers, but also to their psychological driving safety with specific characteristics.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.1081-1085
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• 2009

We have already developed EMI reducing techniques using lossless compression by vertically differential EMI suppression method (VDE[1]). It applies lossless modulo reduction and data bit mapping optimization for low voltage differential signaling (LVDS) transmission lines, that reduces the probability of transient bit and EMI by 12 dB [6][7]. We also improved and optimized the VDE for low power LCD interface. With this modified VDE algorithm[8], the developed FPGA was measured the reduction of the power consumption of LCD circuit by more than 15 % compared to the conventional methods in the case of 14-in LCD with SXGA resolution. The VDE algorithm is based on the total image systematic approach. In the VDE method, the present image signals are subtracted for the 1H delayed image signals and transferred to a column driver through a PCB. As the vertical correlations for image signals are very high, we expected that most of the vertically subtracted image signals remain 0 level and transient cycles become very long. As a result, the power consumption and EMI are extremely reduced for the transferred image signals on a PCB. In this paper, we discussed our proposed method by emphasizing the fact that systematic approach are important based on not only display point of view but also total system point of view.