• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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• pp.17-18
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• 2000

A low-power source driver for TFT-LCDs has been proposed using the triple charge sharing method that enhances the AC power saving efficiency of the prior charge sharing method. The AC power saving efficiency of the proposed source driver reaches 66.6%. In addition, a novel OP-AMP with low-quiescent current has been developed. The measured quiescent current of the OP-AMP is $5{\mu}A{\sim}7{\mu}A$ at VDD=5V and VSS=0V with load resistance of $2k{\Omega}$ and load capacitance of 300pF.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.653-656
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• 2005

New charge-recycling structure and driving scheme for TFT-LCD source-driver IC application are proposed. The number of additional switches for the charge recycling is greatly reduced. An experimental prototype 6-bit source driver with five-level seven-phase charge recycling implemented in a $0.35-{\mu}m$ CMOS technology demonstrates that the quiescent current is only 3.1 mA, dynamic power saving is 75 %, and the settling time, which includes the charge-recycling and data driving, is within 25 $25{\mu}s$.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.997-998
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• 2006

This paper proposes an design of the OLED(Organic Light Emitting Diodes) driver IC using novel verification method. This method using the HDL(hardware description language) simulator, PLI(Programing Language Interface) and image viewer. The proposed method can be used efficiently to function verification in display driver IC.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.1243-1246
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• 2009

A novel a-Si TFT integrated gate driver circuit which suppresses the threshold voltage shift due to prolonged positive gate bias to pull-down TFTs, is reported. Negative gate-to-drain bias is applied alternately to the pull-down TFTs to recover the threshold voltage shift. Consequently, the stability of the circuit has been improved considerably.

• Journal of Power Electronics
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• 제8권2호
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• pp.148-155
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• 2008

In this paper, a cost-effective PDP driving circuit using the transformer network is proposed. Compared with the previous works, the half-bridge type energy recovery circuit recovers the reactive energy not to the capacitor but to the source. A single sustain board architecture removes the blocking switches which are placed on the discharge path in parallel, thus reducing the number of devices. A simple reset circuit generates the same waveforms as the previous approaches. The circuit configuration and modified driving waveforms are compared with the previous works. The validity of the proposed simplified driver is verified through tests using a 6-inch panel.

• Journal of Power Electronics
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• 제9권6호
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• pp.884-891
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• 2009

An address voltage stabilization circuit for the single-side driving (SSD) method for AC plasma display panels (PDP) is proposed. The single-side driving method, which eliminates a common sustaining driver, uses only two electrodes in a three electrode AC PDP structure. The high-impedance (Hi-Z) mode operation of the data drive ICs during the sustaining period is needed for surface gas-discharge without misfiring in the SSD method but it produces the problem that the address voltage increases up to the breakdown voltage. The proposed circuit based on a flyback converter can stabilize the address voltage under the breakdown voltage and provide better surface gas-discharge performance without any misfiring in the SSD scheme.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.293-298
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• 2005

In this paper, we introduced a simulator to visualize the driving scenery of newly developed train called the K-AGT(Korea Automated Guideway Transit). The simulator consists of mainly two parts; control system and display system. In the control system, user can control the driving speed of the K-AGT, the driving environment(day and night), the operation of the train door and the screen door and user's views(driver's view, left window view, right window view, passenger's view). In the display system, immersive driving scenery generated by stereoscopic head mount display system and 3 channel PDP display system are displayed. We are expect to utilize the system to share the idea among customer, designer and constructor and verify the operating condition of the K-AGT intuitively.

• 한국정보전자통신기술학회논문지
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• 제4권1호
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• pp.23-31
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• 2011

본 논문은 차세대 자동차 지능형 통합 스마트 모니터 시스템을 제작하였다. 차량의 계기판 장치는 많은 방해 요소를 감소시키며, 운전자들에게 영향을 주지 않고 도로에 집중할 수 있도록 하는 것이 필수적이다. 위험 경보는 시각적인 디스플레이와 함께 유용하게 사용되지만 기존의 방식은 문제가 있다. 차량 안전 시스템의 최적화는 위험을 알리는 각종 경보보다 더 필수적인 것은 운전자가 도로에 집중할 수 있는 시각적인 장치가 요구된다. 지능형 통합 스마트 모니터 시스템은 자동차에서 가장 많이 보는 정보인 자동차 속도, 엔진 회전속도, 연료, 엔진 온도, 연료 게이지, 회전표시등과 각종 경보 표시등 기본 정보를 모아서 운전자에게 제공한다. 본 논문에서 설계한 지능형 통합 스마트 모니터 시스템은 박막 트랜지스터 액정 표시 장치, 액정 표시 장치배경 조명 발광다이오드, 평면 미러, 특수 제작된 렌즈 및 구동회로로 구성되어 있으며, 운전자 안전성을 고려한 차세대 지능형 자동차 통합스마트 모니터 시스템을 제작, 분석하였다.

• 한국IT서비스학회지
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• 제22권6호
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• pp.87-102
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• 2023

Existing child car seats do not have a monitoring means for the driver or guardian to effectively recognize the status of whether the seat belt of car seat is fastened and whether the ISOFIX of the car seat is fastened to the inside device of the vehicle. In this paper, we propose a smart car seat system which can monitor in real time, whether the seat belt of a child seated in the car seat is fastened and whether the ISOFIX of the car seat is fastened. The proposed system has been developed with a prototype, in which a Hall sensor, magnet, Bluetooth, and display device are used to detect whether these are fastened and to display the detection results. The prototype system provides the detection results as texts and alarm signal to the display for driver or guardian' smartphone in the car in motion. With functional tests of the prototype system, it was confirmed that the detection functions are properly operated, and the detection results were transmitted to the display device and smartphone via Bluetooth within 0.5 seconds. It is expected that the development system can effectively prevent safety accidents of child car seats.

• 한국위성정보통신학회논문지
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• 제12권1호
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• pp.114-119
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• 2017

In this paper we present the search on HC-06 Bluetooth based driver module for emergency LED Multi-Directional Indicator. Nowadays, a growing trends in which electronic displays such as LED, LCD or plasma monitors are being installed in public places like bars, stores, entertainment areas, restaurants, lobbies, etc. In this paper, the study is curried out on efficiency of HC-06 Bluetooth module based controller driver that relates generally to the field of emergency signage management systems for displaying various indicator contents remotely on electronic displays in public and privates venues. It allows user smart devices interaction remotely with digital signage by providing content for displaying on at least one display in a venue. Depending on the emergency case, HC-06 Bluetooth based driver module proves the high efficiency as well as good performance of processing and communicating remotely the indicator based message that is displayed from a venue management control system by using smart devices. The system combines smart device that linked to HC-06 Bluetooth module with ATmega168/328 embedded micro controller which result by switching the displayer containing the digital signage indicator based message.