Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Brightness Degradation of Projection TV with Plastic Coupler

플라스틱 커플러를 채용한 프로젝션 TV의 휘도저감

  • Kim, Nam-Woong (Department of Mechanical Engineering, Soonchunhyang University) ;
  • Kim, Kug-Wug (Department of Mechanical Engineering, Soonchunhyang University)
  • Published : 2006.12.31
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Abstract

In general the cooling of projection TV is realized with aluminum coupler and coolant. A new type of projection TV with plastic coupler is discussed. Compared with an aluminum coupler, the plastic coupler has the advantage of cost, but is not as good as aluminum one in cooling performance. Therefore it is thought that there may be some problems such as brightness degradation induced by insufficient cooling andit is needed to investigate the relation between phosphor brightness and temperature variation. In this paper, a procedure is developed to predict the brightness degradation of CRT in projection TV with plastic coupler. Thermal analysis for CRT in projection TV is performed using FEM (finite element method).

일반적으로 프로젝션 TV의 냉각을 위해서는 알루미늄 커플러와 냉매를 사용한다. 본 연구에서는 비용절감의 차원에서 플라스틱 커플러를 사용하는 경우, 냉각성능 저감에 따른 휘도저감의 문제에 대해 연구하였다. 형광체의 밝기와 온도변화와의 관계를 조사하고, 프로젝션 TV 내 CRT의 온도분포를 유한요소법을 이용하여 해석하였다. 이러한 결과로부터 플라스틱 커플러를 채용하는 프로젝션 TV의 휘도저감을 예측할 수 있었다.

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