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Display panel conversion data deciding method and measuring apparatus

  • US 20060290618A1
  • Filed: 09/02/2004
  • Published: 12/28/2006
  • Est. Priority Date: 09/05/2003
  • Status: Abandoned Application
First Claim
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1. A method for determining the conversion data of a display panel, characterized in that it is a method for determining the conversion data of a display device having a display panel, wherein there are disposed in matrix form multiple pixels, each having a capacitor, a drive circuit for controlling current or voltage based on the voltage of the capacitor, and a self-emitting element driven by the drive circuit, and a luminance signal generating means for applying to the capacitor an analog voltage obtained by conversion of luminance data based on conversion data, comprises the steps of:

  • a first measurement step for finding a first driving current of the light-emitting elements of the display panel when the capacitors of the pixels other than the pixel under test have not been completely discharged;

    a charging step for charging the capacitor of the pixel under test to the analog voltage;

    a second measurement step for measuring a second driving current of the light-emitting elements of the display panel when the capacitor of the pixel under test has been charged to the analog voltage;

    a driving current calculation step for finding the driving current of the pixel under test from the difference between the first driving current and the second driving current; and

    a data calculation step for finding the conversion data based on the driving current.

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