서지주요정보
박막트랜지스터 액정표시소자의 화소간섭 보상회로에 관한 연구 = A study on the crosstalk compensation circuit in TFT-LCDs
서명 / 저자 박막트랜지스터 액정표시소자의 화소간섭 보상회로에 관한 연구 = A study on the crosstalk compensation circuit in TFT-LCDs / 정윤철.
저자명 정윤철 ; Jeong, Yun-Cheol
발행사항 [대전 : 한국과학기술원, 1995].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8005859

소장위치/청구기호

학술문화관(문화관) 보존서고

MIC 95018

SMS전송

도서상태

이용가능

대출가능

반납예정일

등록번호

9001862

소장위치/청구기호

서울 학위논문 서가

MIC 95018 c. 2

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Recently the technology of TFT-LCD has been developed so rapidly that 5 inch diagonal size which has been used in the pocket TV is increased to be 10 inch being used currently in computer displays and TV screens. As the display size area becomes larger, and the resolution higher, in order to maintain the high image quality, we have to consider the degradation effects due to the incorporation of the TFT-LCD parameters such as the data-line resistance, the common electrode resistance, the data-line to common parasitic capacitance, and the output current of driver ICs. One of the degradation effects is crosstalk resulting from the coupling between the source bus-line and common electrodes. Since a source signal which represents a large number of display data is supposed to vary frequently, the common signal level is affected through the coupling effect, resulting in the degradation of pixel drive signals. Therefore, this thesis proposes a method to compensate for this source-common electrode coupling effect by designing and experimenting a crosstalk compensation circuit. The compensation circuit consists of the parts of detection, level shift, integration, and control. The detection part detects the distorted common electrode signal caused by the coupling effect by using differential amplifiers. The level shifting is needed to adjust the detected signal to a compensation voltage level. The integration part is a switch controlled RC integrator whose output is proportional to the amount of common electrode voltage distortion. A newly designed compensation circuit is attached to the 9.5 inch line inversion type TFT-LCD, and the performance of the compensation circuit is investigated by measuring the wave forms of source and common electrode signals. We saw that the newly designed compensation circuit greatly reduced the crosstalk between the course and the common electrode. In this thesis, we also conclude that the line inversion type TFT-LCD, whose usage has been limited due to the crosstalk degradation despite of its cost merit can be used in large screen LCDs by incorporating a new compensation circuit. In addition, we can suppose that by incorporating a new compensation circuit, it is possible to reduce the output swing of driver ICs, resulting in the smaller chip size driver and the lower power dissipation.

서지기타정보

서지기타정보
청구기호 {MIC 95018
형태사항 2, 106 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : A, 액정표시소자 Model simulation file list. - B, 액정표시소자 등가모델의 인가전압별 모의실험결과. - C, 보상회로 Simulation File List. - D, 보상회로 Block 별 신호파형(Scope 사진)
저자명의 영문표기 : Yun-Cheol Jeong
지도교수의 한글표기 : 김이섭
지도교수의 영문표기 : Lee-Sup Kim
학위논문 학위논문(석사) - 한국과학기술원 : 정보및통신공학과,
서지주기 참고문헌 : p. 105-106
주제 Thin film transistors.
Liquid crystal displays.
Equalizers (Electronics)
Crosstalk.
Imaging systems --Image quality.
박막 트랜지스터. --과학기술용어시소러스
액정 표시기. --과학기술용어시소러스
등화기. --과학기술용어시소러스
영상 조정 장치. --과학기술용어시소러스
화소 (화상) --과학기술용어시소러스
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