Patent ID: 8248326
Filing Date: 2012-08-21
Classification: G09G

Abstract:
1. An image display apparatus comprising: a face plate with a plurality of light-emitting regions; a rear plate with electron-emitting devices corresponding to the plurality of light-emitting regions, respectively; and a drive circuit that drives the electron-emitting devices, wherein the drive circuit has a correction circuit that calculates a correction value evaluated by influence of emitted electrons from electron-emitting devices which correspond to light-emitting regions around the light-emitting region to be corrected, and corrects a signal input to the electron-emitting device corresponding to the light-emitting region to be corrected based on the correction value, and the correction circuit has at least one adjustment circuit that adjusts the correction value based on variation in electron scattering efficiencies of the light-emitting regions around the light-emitting region to be corrected and variation of amount of light emission in the light-emitting regions to be corrected caused by the scattered electrons from the light-emitting regions around the light-emitting region to be corrected.