• 제목/요약/키워드: LCD display

검색결과 1,818건 처리시간 0.032초

Design of an Image Processor for UXGA Class LCD

  • Cho, Hwa-Hyun;Choi, Myung-Ryul
    • Journal of Information Display
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    • 제2권2호
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    • pp.13-21
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    • 2001
  • We propose a universal image processor for a-Si TFT LCD of UXGA class that can display the full screen on the LCD panel with low resolution of video sources such as NTSC, VGA, SVGA, XGA, and SXGA by using the proposed interpolation filter. In addition, we propose a real-time contrast controller for image improvement of multi-gray scale image. The operation of the proposed methods has been verified using Synopsys VHDL and computer simulation. Results show that the proposed methods might be suitable for a UXGA LCD controller for real-time image improvement.

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Development of Driver IC on TFT-based Liquid Crystal Display

  • Pan, Po-Chuan;Koo, Horng-Show
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.381-384
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    • 2005
  • Driver IC is one of the key components on the LCD monitor and LCD/TV. The function of the driver IC is to transfer and forward the input signals to LCD panel module. Inside driver IC, there are several operating units which process the input signals and generate the appropriate size and resolution to the LCD panel module. LCD panel module will display these input signals. However, there are some difficulties which driver IC designer, LCD monitor and LCD/TV maker will face. Thus, this article addresses the function and difficulties on driver IC.

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Large TFT LCD Technology for TV application

  • Kim, Woo-Yeol
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.65-67
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    • 2003
  • LCD TV market is rapidly growing. It is forecasted that the main size of the LCD TV will be about 20" to 52". The IPS mode is going to lead the large TFT LCD technology for TV application among other LC modes which are VA mode, WVTN mode and so on, because the display image quality of the IPS mode is superior to others.

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Novel Impulsive Driving Schemes for 120Hz LCD Panels

  • Nam, Hyoung-Sik;Oh, Jae-Ho;Shin, Byung-Hyuk;Oh, Kwan-Young;Berkeley, Brian H.;Kim, Nam-Deog;Kim, Sang-Soo
    • Journal of Information Display
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    • 제9권1호
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    • pp.1-5
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    • 2008
  • Two new impulsive driving technologies for 120Hz liquid crystal display (LCD) panels are proposed to improve moving picture quality. One technology generates the dark frame using an adder and a shifter simply without using any look up tables (LUTs). It results in a cost effective impulsive scheme with motion picture quality comparable to that of high speed driving. The other is a backlight flashing method designed to avoid ghost images. The issue of ghost images caused by the slow response time of liquid crystal (LC) is solved by means of 120Hz overdriving and 120Hz backlight flashing. Using the perceived blur edge time (PBET) metric, measured moving picture response time (MPRT) values were 10.8ms and 4.4ms, respectively, while that of 120Hz high speed driving was 10.1ms.

액정디스플레이 기술의 발전전망 (An outlook of liquid crystal display technology)

  • 장진
    • E2M - 전기 전자와 첨단 소재
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    • 제9권7호
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    • pp.745-754
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    • 1996
  • 이글에서는 다음의 내용을 다루었다. 1. LCD의 기능 성능 향상, (1) CRT와 TFT-LCD의 기능, 성능 비교, (2) TFT-LCD의 기능, 성능향상을 위한 과제 2. TFT-LCD의 가격 및 수급현황 3. Poly-Si TFT-LCD전망 4. 투사형 TFT-LCD 5. 반사형 LCD 6. 필림형 LCD 7. 고분자 분산형 액정(PDLC)

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LCD 모니터의 누설 전자파에 대한 분석 (Analysis of the Electromagnetic Leakage from Liquid Crystal Display Monitors)

  • 이호성;심규홍;오승섭;육종관
    • 한국전자파학회논문지
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    • 제27권9호
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    • pp.844-853
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    • 2016
  • 컴퓨터의 대표적인 출력 매체인 LCD(Liquid Crystal Display) 모니터에서는 일반적으로 의도치 않은 전자파가 누설된다. 이러한 누설 전자파에는 컴퓨터의 메인 보드에서 LCD 모니터로 전달되는 화면 정보가 포함되어 있기 때문에 누설 신호의 복원을 통한 화면 정보 누설의 위험성이 존재한다. 따라서 누설 신호를 통한 전자파 보안 위협이 이슈가 되고 있으므로 정보 누설 가능성에 대한 분석이 필요한 상황이다. 본 논문에서는 데스크탑과 랩탑 모니터에서 누설되는 전자파를 분석하여 화면 정보 누설의 가능성을 확인하였다. 화면 구성 매커니즘을 분석하여 LCD 모니터의 누설 전자파의 형태를 예측하였고, 누설 신호 탐지 실험 환경을 구성하여 원거리에서 누설 전자파를 측정하였다. 또한, 여러 알고리즘을 사용하여 누설 화면을 복원하고, 원 화면과 비교하여 정보 누설 위협에 대하여 확인하였다.

Advanced LC Development for LCD TV Application

  • Tarumi, Kazuaki;Klasen-Memmer, Melanie
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.757-761
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    • 2004
  • Flat Panel Display (FPD) application of Television (TV) application is booming. Liquid Crystal Display (LCD) is forecasted to play a dominant role for TV application in next years. We review in this presentation LC material development for LCD TV application.

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IPS-TFT-LCDs Technology Trends

  • Tajima, Zenzo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.15-18
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    • 2004
  • Recent progress of the in-plane switching (IPS) TFT-LCD technologies is reviewed. We call the improved new technology 'advanced super IPS TFT-LCD(AS-IPS)'. After suppressing the viewing angle dependency of essential display characteristics, recent brightness, viewing angle and motion picture quality has been highly improved. The stage is now introducing it into consumer information appliance for higher display performances, by which we could open a large size digital LCD TVs application.

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Development of 40 inch Full Color AMOLED Display

  • Chung, K.;Huh, J.M.;Sung, U.C.;Chai, C.C.;Lee, J.H.;Kim, H.;Lee, S.P.;Goh, J.C.;Park, S.K.;Ko, C.S.;Koh, B.S.;Shin, K.J.;Choi, J.H.;Jung, J.H.;Kim, N.D.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.781-784
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    • 2005
  • We have developed technology to fabricate large-size active matrix organic light-emitting diode (AMOLED) displays with good color purity. Using these innovations, we have developed a 40inch diagonal WXGA AMOLED full color display. Because the TFT circuitry occupies a large portion of the pixel structure, an efficient white emission OLED is essential to integrate the device onto the active matrix backplane. The development of these technologies enables OLED displays to fulfill the requirements for larger size applications such as HDTVs

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Current Controlled X-Y Channel Driving White LED Backlight System for 46" LCD TV

  • Cho, Dae-Youn;Oh, Won-Sik;Cho, Kyu-Min;Moon, Gun-Woo;Yang, Byung-Choon;Jang, Tae-Seok
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.1503-1506
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    • 2008
  • A novel white-LED (light emitting diode) backlight system for 46"LCD TVs which involves the current controlled X-Y channel driving method is proposed in this paper. There are two problems related to the LED current in the conventional X-Y channel driving driven by a constant voltage source. To solve these problems, a real time current sensing system is applied to the conventional one and the time-division current sensing method is employed.

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