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Liquid crystal display and backlight adjusting method

  • US 20060007097A1
  • Filed: 10/21/2004
  • Published: 01/12/2006
  • Est. Priority Date: 12/08/2003
  • Status: Active Grant
First Claim
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1. A liquid crystal display apparatus having a liquid crystal interposed between two substrates and a backlight as a light source for the liquid crystal, comprising:

  • a luminance sensor formed on one of the substrates (this substrate is referred to as the first substrate), the luminance sensor and thin film devices as pixels being formed on the first substrate in the same process, the luminance sensor that detects the luminance of the backlight; and

    a control circuit that generates a drive signal that keeps the luminance of the backlight almost constant on the basis of a detection signal detected by the luminance sensor.

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