×

Image display apparatus

  • US 7,928,969 B2
  • Filed: 12/20/2007
  • Issued: 04/19/2011
  • Est. Priority Date: 12/25/2006
  • Status: Expired due to Fees
First Claim
Patent Images

1. An image display apparatus comprising:

  • a plurality of pixels having an electron-emitting device and a light emitting region that emits light when an electron emitted from the electron-emitting device enters therein, respectively;

    a spacer for maintaining a space between the electron-emitting device and the light emitting region;

    a first conversion circuit for converting an image signal;

    a second conversion circuit for converting output of the first conversion circuit;

    a correction value calculation circuit for calculating a correction value on the basis of output of the second conversion circuit;

    a correction value adjustment circuit for adjusting the correction value on the basis of output of the first conversion circuit and outputting the adjusted correction value; and

    a correction value addition circuit for correcting output of the first conversion circuit by the adjusted correction value;

    wherein the first conversion circuit performs conversion such that a linearity between output of the first conversion circuit and a luminance to be displayed becomes higher than a linearity between the image signal and the luminance to be displayed;

    the second conversion circuit is a circuit such that a linearity between output of the second conversion circuit and the amount of electron to be emitted is higher than a linearity between output of the first conversion circuit and the amount of electron to be emitted;

    the spacer is located on a position where an electron directed from a light emitting region of a first pixel toward a light emitting region of a second pixel is blocked;

    the correction value calculation circuit calculates a correction value corresponding to the second pixel on the basis of the output corresponding to the first pixel in the output of the second conversion circuit; and

    the correction value is a value that can reduce a difference between a luminance of the second pixel and a luminance of a pixel that is located separately from the spacer further than the second pixel.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×