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In LCD TV there is a backlight. What is the device to give light. Also tell me what is in stadium video board

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In LCD TV there is a backlight. What is the device to give light. Also tell me what is in stadium video board

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  1. COLD CATHODE TUBES....there is two of them. stadium board....well thats new to me


  2. Most LCD have CFLs (fluorescent); however, there are LCds that have LEDs (white or color) for backlight.
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