• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.845-849
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• 2005

Quick-Response Liquid Powder Display ($QR-LPD^{(R)}$) is a promising device for ultra-low-power applications. Several driving methods for this display were investigated in terms of image quality and power consumption. The power consumed both in a panel and in the output circuits of driver LSIs was evaluated by analog circuit simulation and discussed.

• Proceedings of the IEEK Conference
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• 2003.07b
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• pp.903-906
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• 2003

In this paper, we proposed high slew-rate and low-power OP-AMP of the data driver for TFT-LCDs. Proposed OP-AMP contains newly developed rail-to-rail class-AB input circuit which enables the low-quiescent current and high slew-rate OP-AMP. The slew-rate and the quiescent current of the proposed OP-AMP are 31.2V/$\mu$sec and 5$\mu$A, respectively.

• Journal of the Korean Institute of Telematics and Electronics
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• v.24 no.4
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• pp.708-712
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• 1987

This paper deals with minimizing layout area of VLSI design. A long wire in a VLSI layout causes delay which can be reduced by using a driver. There can be significant area increase when many drivers are introduced in a layout. This paper describes a method to obtain tight bound on the worst-case increase in area when drivers are introduced along many long wires in a layout. The area occupied by minimum-area embedding for a circuit can depend on the aspect ratio of the bounding rectangle of the layout. This paper presents a separator-based area optimal embeddings for VLSI graphs in rectangles of several aspect ratios.

• Proceedings of the KIEE Conference
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• 2002.11d
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• pp.88-90
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• 2002

In this paper, SRM is designed and analyzed for EPS(Electrically Power Steering) application. EPS of vehicles plays a role that reduce driver's handle control power. For the proper design, FEM analysis is implemented according to the rotor structure. Designed motor is simulated with both FEM and magnetic circuit analysis, Effectiveness of the suggested SRM drive for EPS application is verified by the manufactured prototype motor drive tests.

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2146-2148
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• 2002

In this paper, PID control method using genetic algorithm to control the nonlinear multivariable system is presented. Genetic algorithms are global search techniques for nonlinear optimization. For experiment, the x-y rod balancing system with driver circuit board is fabricated. Experiments such as angle and position control for system are performed. The validity and control performance of the GA-based PID controller are confirmed by experimental results.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1578-1581
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• 2009

This work describes a power and area efficient switched-capacitor cyclic DAC for mobile display drivers. The proposed DAC can be simply implemented with one opamp two capacitors and several switches. Furthermore, the op-amp input referred offset is attenuated at the DAC output without additional offset cancellation circuitry. The operation of the cyclic DAC is verified through circuit level simulations.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.29B no.9
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• pp.27-36
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• 1992

A design of scanning electrode driving IC chip has been implemented aiming at the application to liquid crystal color television displays. The chip reflects the design characteristics of high quality liquid crystal panels and satisfies specifications of NTSC type color television displays. The design was verified using logic and circuit simulation, and fabricated using a high voltage CMOS process. A fully working die has been obtained that can be readily applicable to commercial color liquid crystal panels.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.229-229
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• 2004

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.333-334
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• 2012

본 논문은 LED 구동회로에서 DC/DC 컨버터회로를 분산하여 저발열, 부피저감이 가능한 새로운 구조의 LED 구동회로를 제안한다. 제안된 회로의 특징은 기존 벅컨버터에서 발열이 높고 부피가 큰 부품들을 제거하여 발열을 낮추고 부피를 줄이는 효과가 있다. 또한 전력을 분산시킴으로써 기존회로보다 소자의 전압, 전류스트레스가 감소한다. 제안한 회로를 검증하기 위해 이론적 분석결과를 통해 타당성을 검토하였고 전장용 LED 구동회로에 적용하여 실험을 통해 우수성을 검증하였다.

• Proceedings of the KIPE Conference
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• 2015.07a
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• pp.273-274
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• 2015

본 논문은 다중출력 LED 구동회로에 대하여 다룬다. 다중 출력 LED 구동회로는 다수의 LED 모듈을 이용한 회로로써 기존의 회로에서는 특정 LED 모듈에 문제가 발생할 경우 나머지 LED 모듈의 정상적인 동작을 기대하기 어렵다는 단점이 있다. 본 논문에서는 이러한 단점을 보완할 수 있는 방법을 제시한다.