加固机载TFT-LCD的温控技术研究

Temperature control technology on rugged airborne TFT-LCD

  • 摘要: 论述加固机载TFT-LCD设计中温度控制技术所涉及的问题,实现了机载TFT-LCD显示器在-43℃至71℃的范围内正常工作。在研究TFT-LCD特点的基础上,提出了利用ITO膜加热液晶模块以及采用加热丝加热背光源CCFL灯管的加热方式,设计了加热电路的方法,从而确保了机载TFT-LCD在低温环境下的启动和正常工作。基于热设计的基本方法,分析并提出了加固机载TFT-LCD高温工作时的散热解决方案。作为一个自动温控系统,扩展了机载TFT-LCD的工作温度范围。在实际设计中获得了满意的效果。

     

    Abstract: Some problems on temperature control technology of the rugged airborne TFT-LCD are discussed and the operation temperature of -43℃~+71℃ for the airborne TFT-LCD is achieved. Based on the characteristic analysis of TFT-LCD, some methods of the circuit heating are designed to heat LCD module with ITO and heat CCFL with heating wire. Thus the airborne TFT-LCD can be started up and operated under low temperature. Based on thermal design methods, the cooling scheme for the airborne TFT-LCD operating under high temperature is also proposed. The operation temperature range of the ruggedized airborne TFT-LCD is increased with the automatic temperature control system.

     

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