• 제목/요약/키워드: White uniformity(luminance and color uniformity)

검색결과 3건 처리시간 0.019초

TFT-LCD에서 시야각을 고려한 White Uniformity 측정 및 평가에 대한 연구 (Research of Measurement and Evaluation of White Uniformity Considering Visual Angle on TFT-LCD)

  • 장성호;서상원
    • 대한인간공학회지
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    • 제26권4호
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    • pp.33-39
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    • 2007
  • In the full white pattern, white uniformity means the degree of uniform distribution of white color and luminance across the whole screen. Among the FPDs(Flat Panel Displays), the TFT-LCD has weak point of viewing angle. The viewing angle considering location and direction can cause different image quality of the TFT-LCD. Therefore, white uniformity of the TFT-LCD must consider viewing angle. Based on international standards, this study proposes an alternative that is realistic and ergonomic measurement of white uniformity of the TFT-LCD.

RGB LED 배열을 사용하는 역광선 단위의 광학 분석 (Optical Analysis of Backlight Units Using RGB LED Array)

  • 아이시다아웅;이승민;양종경;임연찬;이종찬;박대희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2007년도 추계학술대회 논문집
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    • pp.375-376
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    • 2007
  • In this work, we have simulated a 42-inch LED BLU which was based on 300 RGB LEDs. We have done an adjustment of LEDs' strip distance and a height of the top of the LED to the back of the LCD to get white color uniformity. So, we have changed simultaneously the distance between the top of the LEDs and the back of the LCD. Moreover, we set a fixed position for the horizontal of LED's pitch. And then, we have experimented and compared to our simulation data.

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Spatial and Temporal Characteristics of LG StudioWorks 500LC (Flat Panel LCD)

  • Park, Seung-Ok;Kim, Hong-Suk;Lim, Yong-Jin;Yang, Jae-Youl
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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    • pp.165-166
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    • 2000
  • Spatial independence and temporal stability of flat-panel LCD monitor, LG StudioWorks 500LC, were evaluated. The luminance and chromaticity of stimulus color were measured according to the variation of the size, background color, and location on the screen. The spatial independence at center location is very good and not a limiting factor in its colorimetric characterization, however the spatial non-uniformity is a little severe. The warmup time to stabilize after initial power is about 100 minutes and short-term variance of white stimulus is within 0.1 ${\Delta}E^*\;_{ab}$.

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